JP2014234413A - Antifouling tacky sheet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an antifouling tacky sheet enabling, on an occasion for butting adjacent antifouling tacky sheets against one another, simple and quick positioning and/or cutting operations, affording a high positioning precision, and unaccompanied by the prospect of damaging structures.SOLUTION: The provided antifouling tacky sheet is an antifouling tacky sheet including: a substrate layer 10; a tacky layer 20 configured on the side of one surface of the former; and an antifouling layer 30 configured on the side of the substrate layer 10 where the tacky layer 20 is not configured, wherein a wire 40 for cutting is fitted peelably to the edge portion of the antifouling tacky sheet.

Description

  The present invention relates to an antifouling pressure-sensitive adhesive sheet.

  Conventionally, for the purpose of preventing adhesion of dirt, ice and snow, and preventing adhesion of attached organisms such as barnacles, it has been proposed to attach an antifouling adhesive sheet to the surface of various structures (for example, Patent Document 1). . When affixing an antifouling sheet to a large area such as a large structure, there is a limit to the increase in the sheet width, and thus it is necessary to affix a plurality of antifouling adhesive sheets. At this time, if there is a gap between adjacent antifouling pressure-sensitive adhesive sheets, dirt, attached organisms, and the like adhere to the gap.

  As a method of applying a plurality of antifouling pressure-sensitive adhesive sheets without gaps, there is a method of attaching the end portions in an overlapping manner (for example, Patent Document 2). However, depending on the type of the antifouling layer or the base material layer, sufficient adhesion may not be obtained, and peeling may occur from the overlapped portion. Such peeling can be suppressed by increasing the adhesive force of the antifouling pressure-sensitive adhesive sheet, but in this case, it becomes extremely difficult to remove the peeled antifouling pressure-sensitive adhesive sheet from the structure surface, and during re-working There is a problem that the workability of the apparatus is significantly reduced.

  Therefore, in order to apply a plurality of antifouling pressure-sensitive adhesive sheets without gaps, a method of abutting and attaching the end portions can be considered. However, there is a problem that alignment and cutting are difficult and workability is low. For example, scissors lack the accuracy of alignment. In addition, the cutter tends to damage the structure, and the anticorrosion paint layer of the structure may be damaged and corrosion may occur.

JP 2012-117112 A Japanese Examined Patent Publication No. 4-27076

  An object of the present invention is to provide an antifouling pressure-sensitive adhesive sheet that can be easily and quickly aligned and cut when adhering adjacent antifouling pressure-sensitive adhesive sheets, has high alignment accuracy, and does not damage the structure. And providing a construction method.

According to the present invention, an antifouling pressure-sensitive adhesive sheet is provided.
The antifouling pressure-sensitive adhesive sheet includes a base material layer, an adhesive layer provided on one surface side thereof, and an antifouling layer provided on the surface side of the base material layer on which the adhesive layer is not provided. An antifouling adhesive sheet, wherein a cutting wire is detachably attached to an end of the antifouling adhesive sheet.
According to a preferred embodiment, in the antifouling adhesive sheet, the cutting wire is a surface side surface of the adhesive layer opposite to the base material layer, the inside of the adhesive layer, or the adhesive layer and the It is attached to the interface with the base material layer.
According to a preferred embodiment, in the antifouling pressure-sensitive adhesive sheet, an adhesive margin including the base material layer and the pressure-sensitive adhesive layer extending outward from the antifouling layer is provided at an end portion.
According to a preferred embodiment, in the antifouling pressure-sensitive adhesive sheet, the cutting wire is attached to a boundary between the bonding allowance and the antifouling layer.
According to a preferred embodiment, the cutting wire is colored in the antifouling pressure-sensitive adhesive sheet.
According to another situation of this invention, the construction method of a structure is provided.
The construction method of the structure is to prepare the antifouling adhesive sheet (antifouling adhesive sheet A) and the antifouling adhesive sheet B (step 1),
At least one antifouling pressure-sensitive adhesive sheet A and at least one antifouling pressure-sensitive adhesive sheet B are attached to the surface of the structure having a surface to be prevented from being contaminated, and the end of the antifouling pressure-sensitive adhesive sheet B is Affixing the antifouling adhesive sheet A so as to be on the cutting wire (step 2), and peeling the cutting wire from the antifouling adhesive sheet A, Cutting off the end (step 3).
According to a preferred embodiment, the construction method of the structure is to butt the cut surface of the antifouling pressure-sensitive adhesive sheet B and the end of the antifouling pressure-sensitive adhesive sheet A on the side of the peeled cutting wire (step 4). ).
According to a preferred embodiment, in the construction method of the structure, the cutting wire is colored in a color different from a surface on which contamination of the structure is to be prevented.

According to the antifouling pressure-sensitive adhesive sheet of the present invention, cutting and removal of the end portion of the antifouling pressure-sensitive adhesive sheet can be performed simply and quickly, and cutting with high alignment accuracy can be performed without damaging the structure.
When cutting with a wire placed in advance under the overlapped portion on the surface of the structure, the workability is reduced due to the trouble of setting the wire, but according to the antifouling adhesive sheet of the present invention, the wire on the surface of the structure Since there is no need to arrange the in advance, workability is high.

FIG. 1A is a schematic perspective view of an antifouling pressure-sensitive adhesive sheet according to one embodiment of the present invention. FIG.1 (b) is a schematic sectional drawing by the II line of the antifouling adhesive sheet of Fig.1 (a). FIG. 2A is a schematic perspective view of an antifouling pressure-sensitive adhesive sheet according to another embodiment of the present invention, and FIG. 2B is an II line of the antifouling pressure-sensitive adhesive sheet of FIG. FIG. FIG. 3A is a schematic perspective view of an antifouling pressure-sensitive adhesive sheet according to still another embodiment of the present invention, and FIG. 3B is an I-I of the antifouling pressure-sensitive adhesive sheet of FIG. It is a schematic sectional drawing by a line. FIG. 4A is a schematic perspective view of an antifouling pressure-sensitive adhesive sheet according to still another embodiment of the present invention, and FIG. 4B is an II diagram of the antifouling pressure-sensitive adhesive sheet of FIG. 4A. It is a schematic sectional drawing by a line. 5 (a), (b), (c) and (d) are each a schematic diagram illustrating a construction method for a structure according to one embodiment of the present invention. 6 (a) and 6 (b) are each a schematic diagram for explaining step 2 in the construction method for a structure according to another embodiment of the present invention. 7 (a), (b), (c), (d) and (e) are each a schematic diagram illustrating a construction method of a structure according to still another embodiment of the present invention. 8 (a), (b), (c), (d) and (e) are each a schematic diagram illustrating a construction method for a structure according to still another embodiment of the present invention. FIGS. 9A, 9B, 9C, and 9D are schematic views illustrating a construction method for a structure according to still another embodiment of the present invention.

[A. Antifouling adhesive sheet]
[A-1. Overall structure]
FIG. 1A is a schematic perspective view of an antifouling pressure-sensitive adhesive sheet 100a according to one embodiment of the present invention, and FIG. 1B is a schematic cross-sectional view of the antifouling pressure-sensitive adhesive sheet 100a taken along line II. It is. The antifouling pressure-sensitive adhesive sheet 100a has an antifouling layer 30, a base material layer 10, and an adhesive layer 20 in this order. The antifouling pressure-sensitive adhesive sheet 100a has a strip shape. In the present embodiment, the cutting wire 40 is attached to the surface of the pressure-sensitive adhesive layer 20 opposite to the base material layer 10 (hereinafter sometimes referred to as “the pressure-sensitive adhesive layer surface”). The cutting wire 40 is attached to the end in the width direction over the entire long side direction substantially parallel to the long side direction of the antifouling pressure-sensitive adhesive sheet 100a.

  FIG. 2A is a schematic perspective view of an antifouling pressure-sensitive adhesive sheet 100b according to another embodiment of the present invention, and FIG. 2B is a schematic cross-sectional view of the antifouling pressure-sensitive adhesive sheet 100b taken along line II. It is. In the present embodiment, the cutting wire 40 is attached to the interface between the base material layer 10 and the adhesive layer 20. In other respects, the antifouling pressure-sensitive adhesive sheet 100b is the same as the antifouling pressure-sensitive adhesive sheet 100a.

  FIG. 3A is a schematic perspective view of an antifouling pressure-sensitive adhesive sheet 100c according to still another embodiment of the present invention, and FIG. 3B is a schematic cross-sectional view taken along line II of the antifouling pressure-sensitive adhesive sheet 100c. FIG. In the present embodiment, the end in the width direction on the side where the cutting wire 40 of the base material layer 10, the adhesive layer 20 and the antifouling layer 30 is attached is opposite to the base material layer 10 of the antifouling layer 30. It has an inclined surface from the side surface (hereinafter sometimes referred to as “antifouling layer surface”) to the surface of the adhesive layer 20. In other respects, the antifouling pressure-sensitive adhesive sheet 100c is the same as the antifouling pressure-sensitive adhesive sheet 100a.

  FIG. 4A is a schematic perspective view of an antifouling pressure-sensitive adhesive sheet 100d according to still another embodiment of the present invention, and FIG. 4B is a schematic cross-sectional view of the antifouling pressure-sensitive adhesive sheet 100d taken along line II. FIG. In the present embodiment, an adhesive allowance 50 including the base material layer 10 and the adhesive layer 20 extending outward from the antifouling layer 30 is provided at one end in the width direction of the antifouling adhesive sheet 100d. ing. The cutting wire 40 is attached to the boundary between the bonding allowance 50 and the antifouling layer 30. In other respects, the antifouling pressure-sensitive adhesive sheet 100d is the same as the antifouling pressure-sensitive adhesive sheet 100c.

In this specification, the term “attached to the surface side surface (adhesive layer surface) opposite to the base material layer of the adhesive layer” for the cutting wire refers to at least one of the cross-sections in the length direction of the cutting wire. It means that the part is in contact with the adhesive layer surface.
With respect to the cutting wire, “attached to the inside of the adhesive layer” means that at least a part of the cross section in the length direction of the cutting wire is embedded in the adhesive layer.
With respect to the cutting wire, “attached to the interface between the adhesive layer and the base material layer” means that at least a part of the cross section in the length direction of the cutting wire is in contact with the interface.
With respect to the cutting wire, “attached to the boundary between the bonding allowance and the antifouling layer” means that at least a part of the section in the length direction of the cutting wire is in contact with the boundary.

  In this specification, “the boundary between the bonding allowance and the antifouling layer” means not only on the boundary line between the adhering allowance and the antifouling layer, but also within the range not impairing the effect of the present invention. The area near the boundary line is also included. The “boundary between the adhesive allowance and the antifouling layer” is, for example, within 5 cm, preferably within 2 cm, more preferably in the direction toward the adhesive allowance and the direction toward the antifouling layer from the boundary line between the adhesive allowance and the antifouling layer. Includes an area within 1 cm.

  As a method of providing the inclined surface at the end of the antifouling pressure-sensitive adhesive sheet (the end of the base material layer, the adhesive layer and / or the antifouling layer), for example, cutting after film-curing is cured; Sag the edge; cause sag due to flow at the coating end during coating; taper the coating liquid discharge end of the coater to continuously reduce the discharge rate to the end; etc. Is mentioned. When the antifouling pressure-sensitive adhesive sheet is strip-shaped, the inclined surface can be provided at the end in the width direction of at least one (for example, both) of the antifouling pressure-sensitive adhesive sheet.

  The inclination angle of the inclined surface of each layer is appropriately set according to the thickness, physical properties, etc. of each layer. The inclined surface of each layer may be continuous or may not be continuous.

  By providing the inclined surface on the antifouling pressure-sensitive adhesive sheet, it is possible to prevent air from being caught when another antifouling pressure-sensitive adhesive sheet is stuck on the antifouling pressure-sensitive adhesive sheet. Moreover, when sticking using the construction liquid containing a surfactant for the purpose of preventing air entrapment, the construction liquid can be easily extruded from the overlapped end portion.

  By providing the above-mentioned adhesion allowance on the antifouling pressure-sensitive adhesive sheet, the adhesive layer surface of the other antifouling pressure-sensitive adhesive sheet is superimposed on the adhesion allowance of one antifouling pressure-sensitive adhesive sheet, and the adjacent antifouling pressure-sensitive adhesive sheets are sequentially It becomes easy to apply them in layers.

  Although not shown, a release film may be provided on the surface of the adhesive layer 20 and / or the surface of the antifouling layer 30 of the antifouling adhesive sheet 100.

  The shape of the antifouling pressure-sensitive adhesive sheet may be any appropriate shape depending on the shape of the structure. It is typically rectangular, for example, it can be strip-shaped. In this specification, “band-like” means that the length (long side direction) is 10 times or more with respect to the width (width direction). Since the strip-shaped antifouling pressure-sensitive adhesive sheet can be supplied in a roll shape, the handleability and workability are improved.

  The width or length of the antifouling pressure-sensitive adhesive sheet is set to any appropriate width or length depending on the shape of the structure. The width of the antifouling pressure-sensitive adhesive sheet can be, for example, 20 cm or more, and can be, for example, 30 cm to 5 m.

  The thickness of the antifouling pressure-sensitive adhesive sheet is set to any appropriate thickness as long as the effects of the present invention are not impaired by the thickness of each layer contained therein. The thickness of the antifouling pressure-sensitive adhesive sheet may be, for example, 50 μm to 5000 μm.

  As the antifouling pressure-sensitive adhesive sheet, a transparent (for example, colorless and transparent) sheet can be used. In this case, the visibility of the cutting wire is increased, the working efficiency is improved, and forgetting to remove can be prevented.

[A-2. Cutting wire]
As described above, the cutting wire is detachably attached to the antifouling pressure-sensitive adhesive sheet.

(attachment)
In the present specification, the term “peeling” for the cutting wire refers to the concept of peeling the cutting wire attached to the surface of the antifouling pressure-sensitive adhesive sheet (for example, the boundary between the bonding allowance 50 and the antifouling layer 30) (FIG. It includes not only 4) but also the concept of pulling up and peeling the cutting wire attached at any appropriate position in the thickness direction of the antifouling pressure-sensitive adhesive sheet while cutting the antifouling pressure-sensitive adhesive sheet.

  As an aspect of attaching the cutting wire, for example, a part or the whole of the cutting wire is attached to the surface of the antifouling pressure-sensitive adhesive sheet (for example, the boundary between the bonding margin and the antifouling layer and / or the surface of the pressure-sensitive adhesive layer). A part or the whole of the cutting wire may be inside the base material layer and / or the adhesive layer (for example, inside the adhesive layer, the interface between the base material layer and the adhesive layer, and inside the base material layer). It may be embedded and attached.

The method of attaching the cutting wire can vary depending on the attachment position of the cutting wire.
For example, when the cutting wire is attached to the surface of the adhesive layer, the cutting wire may be attached to the surface of the adhesive layer before the base material layer and the adhesive layer are laminated. It may be attached.
Any appropriate method can be used as a method of attaching the cutting wire to the surface of the adhesive layer. As such a method, for example, a method of attaching a cutting wire coated with an adhesive to the surface of the pressure-sensitive adhesive layer can be mentioned. As the adhesive, an appropriately diluted adhesive can be used. Moreover, as said adhesive agent, a rubber adhesive, an acrylic adhesive, an isocyanate adhesive etc. can be used, for example.

  For example, when the cutting wire is embedded in the base material layer and / or the adhesive layer, the cutting wire may be attached by, for example, a base material layer forming material and / or an adhesive layer forming material. And a method of embedding the cutting wire at the time of coating, and a method of laminating these layers after attaching the cutting wire to the surface of any of the layers before laminating the base material layer and the adhesive layer.

For example, when the cutting wire is attached to the boundary between the bonding allowance and the antifouling layer, the cutting wire can be attached to the boundary after the antifouling layer is formed.
Any appropriate method can be used as a method of attaching the cutting wire to the boundary. As such a method, for example, a method similar to the method of attaching a cutting wire to the surface of the adhesive layer can be mentioned.

When the shape of the antifouling pressure-sensitive adhesive sheet is a band shape, a cutting wire can be attached in the long side direction (for example, the entire region in the long side direction) of the band of the antifouling pressure-sensitive adhesive sheet.
In this case, when a plurality of strip-shaped adhesive sheets for antifouling are attached to the surface of the structure substantially in parallel, the wire rod for cutting the antifouling adhesive sheet adjacent to the end of the antifouling adhesive sheet is used. It becomes easy to stick so that it becomes the top. In the present specification, “substantially parallel” includes a range of 0 ° ± 20 °, preferably 0 ° ± 10 °, more preferably 0 ° ± 5 °, particularly preferably 0 ° ± 1 °. It is. The same applies to “long side direction”, “length direction”, and “orthogonal”.

  The cutting wire is attached to the end of the antifouling adhesive sheet. More specifically, from the terminal of the antifouling pressure-sensitive adhesive sheet, for example, it can be attached to a region having a distance of 0.05 cm to 20 cm, preferably 0.1 cm to 10 cm, more preferably 0.5 cm to 5 cm. When the antifouling pressure-sensitive adhesive sheet has a strip shape, the cutting wire can be attached to a region within the above range in the width direction from the end in the width direction of the antifouling pressure-sensitive adhesive sheet.

  Part of the cutting wire (for example, one or both ends in the length direction, for example, 0.1 cm or more (for example, 0.1 cm to 100 cm), preferably 1 cm or more from the end in the length direction) ) May not be attached to the antifouling adhesive sheet. Moreover, the said part can extend outside the antifouling adhesive sheet. In these cases, when the cutting wire is peeled off, the part can be used as a tensile allowance, and the cutting wire can be easily peeled off from the antifouling adhesive sheet.

  The number of cutting wires attached to one antifouling pressure-sensitive adhesive sheet may be one or more, for example, 1 to 5, preferably 1 to 3. It is more preferable.

(Wire for cutting)
As the cutting wire, for example, a colored cutting wire (for example, a chromatic color) can be used. Moreover, what was colored in the color different from the said antifouling adhesive sheet can be used. Preferably, those colored in a color different from the surface of the structure can be used. In these cases, the visibility of the cutting wire is increased, the working efficiency is improved, and forgetting to remove can be prevented.

  As the wire for cutting, for example, a wire containing at least one selected from the group consisting of glass fibers, metal fibers, carbon fibers, and fibers made of synthetic resin (synthetic fibers) can be used. Synthetic fibers include, for example, polyamide fibers (for example, nylon fibers), aramid fibers (for example, Kevlar fibers), polyester fibers, polypropylene fibers, polyethylene fibers, cellulosic fibers (for example, cellulose acetate fibers), vinylon fibers (polyvinyl alcohol). Fibers), acrylonitrile-based fibers, and mixed yarns of aromatic polyetherimide fibers and polyvinyl alcohol fibers, and polyamide fibers are preferred.

  The diameter of the cutting wire is, for example, 1 μm to 1 cm, preferably 5 μm to 750 μm, and more preferably 10 μm to 500 μm.

  When the cutting wire is attached to the surface of the pressure-sensitive adhesive layer, the inside of the pressure-sensitive adhesive layer, or the interface between the pressure-sensitive adhesive layer and the base material layer, the diameter of the wire for cutting is, for example, 2% to 2000% of the thickness of the pressure-sensitive adhesive layer Preferably, it is 10% to 1500%, and more preferably 20% to 1000%.

[A-3. Base material layer]
Any appropriate base material layer can be adopted as the base material layer as long as the effects of the present invention are not impaired. Such a material for the base material layer is preferably excellent in water resistance, strength, flexibility and tearability. Examples of the material for the base material layer include polyurethane resin, polyurethane acrylic resin, rubber resin, vinyl chloride resin, polyester resin, silicone resin, elastomers, fluororesin, polyamide resin, polyolefin resin (polyethylene, polypropylene, etc.) ) And polystyrene resin. The material of such a base material layer may be only one type or two or more types.

  The elongation of the base material layer is preferably 100% or more, more preferably 120% or more, and further preferably 150% or more. When the elongation of the base material layer is 100% or more, the antifouling pressure-sensitive adhesive sheet can follow the shape of various structures well and can be stuck on a flat surface as well as a bent part (existing on the hull surface). Such curved surface portion, 90-degree angle portion, acute angle portion, etc.) can be satisfactorily adhered. The upper limit of the elongation of the base material layer is preferably 2000% from the viewpoint of the strength of the base material layer.

  The base material layer has a breaking stress of preferably 10 MPa or more, more preferably 12 MPa or more, and further preferably 15 MPa or more. When the stress at break of the base material layer is less than 10 MPa, the base material layer is frequently cut when the used antifouling pressure-sensitive adhesive sheet is peeled off from the structure, and the work efficiency may be remarkably deteriorated. The upper limit of the breaking point stress of the base material layer is preferably 200 MPa from the viewpoint of the handleability of the base material layer.

  The elongation and breaking point stress of the base material layer can be measured according to JIS 7161, JIS 7162, and JIS 7172.

  The elastic modulus of the base material layer is preferably 4000 MPa or less, more preferably 1000 MPa or less, still more preferably 100 MPa or less, and particularly preferably 50 MPa or less. When the elastic modulus of the base material layer is within the above range, the antifouling pressure-sensitive adhesive sheet can satisfactorily follow the shapes of various structures and workability is improved. The lower limit of the elastic modulus of the base material layer is preferably 0.1 MPa from the viewpoint of the handleability of the base material layer.

  The base material layer may contain any appropriate additive as long as the effects of the present invention are not impaired. Examples of such additives include olefin resins, silicone polymers, liquid acrylic copolymers, tackifiers, anti-aging agents, hindered amine light stabilizers, ultraviolet absorbers, antioxidants, and antistatic agents. , Polyethyleneimine, fatty acid amide, fatty acid ester, phosphate ester, lubricant, surfactant, filler, and pigment (for example, calcium oxide, magnesium oxide, silica, zinc oxide, titanium oxide, carbon black, etc.).

  The base material layer preferably contains an ultraviolet absorber. When the base material layer contains the ultraviolet absorber, the weather resistance of the antifouling pressure-sensitive adhesive sheet is improved. Moreover, the deterioration of the base material due to sunlight can be prevented during outdoor use, and the initial base material strength can be easily maintained. Therefore, even when the used antifouling adhesive sheet is peeled off from the structure, the working efficiency is improved without the base material layer being cut.

  Arbitrary appropriate thickness can be employ | adopted for the thickness of a base material layer by a use, use environment, etc. The thickness of the base material layer is preferably 20 to 500 μm. When the thickness of the base material layer is 20 μm or more, handling properties are improved. When the thickness of the base material layer is 500 μm or less, the followability to the shape of the structure is improved, the unevenness of the joint portion of the sheet is further reduced, and dirt is less likely to be attached.

  In order to improve the adhesion to the antifouling layer, a primer may be applied in advance to the portion of the base material layer where the antifouling layer is provided. Further, a silane coupling agent may be added to the base material layer in advance. For example, when the antifouling layer contains a silicone resin, the adhesion to the base material layer may be low due to the low surface energy that is a characteristic of the silicone resin. If the adhesion between the antifouling layer and the base material layer is low, the antifouling layer that exhibits the antifouling effect peels off from the base material layer due to impact or physical damage during use, and the original antifouling effect continues. It may not be possible. Therefore, a primer is applied to the surface of the base material layer in advance to improve the adhesion to the antifouling layer, or silanol groups and alkoxysilane groups that react with the silicone resin are introduced into the base material layer with a silane coupling agent. The adhesion can be improved by performing a condensation reaction with a reactive group on the base material layer during application of the condensation type silicone resin.

  Only one type of silane coupling agent may be used, or two or more types may be used. Specific examples of commercially available silane coupling agents include KBM5103, KBM1003, KBM903, KBM403, and KBM802 manufactured by Shin-Etsu Chemical Co., Ltd.

  When the silane coupling agent is included in the base material layer, the content ratio of the silane coupling agent in the base material layer is preferably 0.01 to 10% by weight. When the content ratio of the silane coupling agent in the base material layer is 10% by weight or less, it is possible to avoid a risk that the base material layer becomes hard due to the silane coupling agent serving as a crosslinking point. When the content ratio of the silane coupling agent in the base material layer is 0.01% by weight or more, the adhesion between the base material layer and the antifouling layer is improved.

  The surface of the base material layer on which the adhesive layer is provided may be subjected to an easy adhesion treatment. By performing the easy adhesion treatment, the adhesive residue at the time of peeling and removal can be suppressed. Examples of the easy adhesion treatment include the same treatment as the treatment applied to the surface of the base material layer for the above-mentioned adhesion allowance.

[A-4. Adhesive layer]
Any appropriate pressure-sensitive adhesive layer can be adopted as the pressure-sensitive adhesive layer as long as the effects of the present invention are not impaired. Examples of the material for such an adhesive layer include acrylic resin adhesives, epoxy resin adhesives, amino resin adhesives, vinyl resin (vinyl acetate polymers, etc.) adhesives, and curable acrylic resin adhesives. Agents, silicone resin adhesives, and the like. The material of the adhesive layer may be only one type or two or more types.

  The adhesive layer has a 180-degree peel adhesive strength at 23 ° C. and a tensile speed of 300 mm / min, preferably 30 N / 20 mm or less, more preferably 20 N / 20 mm or less, and still more preferably 15 N / 20 mm or less. If the adhesive layer has a 180 ° peel adhesive strength at 23 ° C. and a tensile speed of 300 mm / min within the above range, the working efficiency when peeling the used antifouling adhesive sheet from the structure is improved. The lower limit of the 180-degree peel adhesive force at 23 ° C. and a tensile speed of 300 mm / min of the adhesive layer is preferably 5 N / 20 mm from the viewpoint of maintaining sufficient adhesive force.

  The 180 degree peel adhesive force of the pressure-sensitive adhesive layer can be measured, for example, as follows. That is, an adhesive layer is laminated on a base material to prepare an adhesive sheet, which is cut into a test piece size of 80 mm × 20 mm. As the adherend, a plastic FRP plate reinforced by putting a glass cloth in an epoxy resin of 30 mm × 100 mm × thickness 2 mm is used. The test piece is attached to the adherend by reciprocating once with a 2 kg roller, and left at 23 ° C. for 30 minutes, and then the initial 180-degree peel adhesive strength is measured at a tensile speed of 300 mm / min.

  When the pressure-sensitive adhesive layer is contacted with seawater, the compression elastic modulus of the portion of the pressure-sensitive adhesive layer in contact with seawater is preferably 1.1 times the compression elastic modulus of the pressure-sensitive adhesive layer before seawater contact. More preferably, it is 1.2 times or more, and further preferably 1.5 times or more. When the pressure-sensitive adhesive layer is in contact with seawater and the compression elastic modulus of the portion of the pressure-sensitive adhesive layer in contact with seawater is 1.1 times the compression elastic modulus of the pressure-sensitive adhesive layer before seawater contact, Can exhibit good adhesiveness. When the pressure-sensitive adhesive layer is contacted with seawater, the upper limit of the compression elastic modulus of the portion of the pressure-sensitive adhesive layer that is in contact with seawater with respect to the compression elastic modulus in the pressure-sensitive adhesive layer before seawater contact is from the viewpoint of handling properties. Preferably it is 100 times.

  Arbitrary appropriate thickness can be employ | adopted for the thickness of an adhesion layer by a use, use environment, etc. The thickness of the adhesive layer is preferably 10 μm or more. When the thickness of the pressure-sensitive adhesive layer is within the above range, the followability to the shape of the structure is improved, and the adhesive force is improved by increasing the adhesion area. The upper limit of the thickness of the adhesive layer is preferably 100 μm from the viewpoint of handleability.

[A-5. Antifouling layer]
Any appropriate antifouling layer can be adopted as the antifouling layer as long as the effects of the present invention are not impaired. From the viewpoint of suitably preventing adhesion of dirt and the like, the surface of the antifouling layer is preferably hardly adhesive.

  The material for forming the antifouling layer includes, for example, a resin having a small surface energy such as a fluorine resin, a silicone resin, a melamine resin, and an acrylic resin.

  The antifouling layer preferably further contains an antifouling agent. Only one type of antifouling agent may be used, or two or more types may be used. When the antifouling layer contains an antifouling agent, the antifouling agent moves to the surface of the resin as a matrix and covers the surface, whereby a high antifouling effect can be maintained for a long time.

  In the antifouling layer, the content ratio of the antifouling agent to 100 parts by weight of the resin is preferably 2 parts by weight or more, more preferably 2 to 200 parts by weight, further preferably 3 to 150 parts by weight, and particularly preferably 4 to 120 parts. Part by weight, most preferably 5 to 100 parts by weight. When the content ratio of the antifouling agent to the resin is within the above range, the antifouling effect of the antifouling layer can be expressed more reliably, and the appearance of the final molded product and the coating is improved, and the strength of the antifouling layer is increased. Improves antifouling properties for a longer period of time.

  As the antifouling agent, any appropriate antifouling agent can be adopted as long as the effects of the present invention are not impaired. Examples of such an antifouling agent include silicone oil, liquid paraffin, surfactant, wax, petrolatum, animal fats, fatty acids and the like. The antifouling agent that can be used in the present invention is preferably at least one selected from silicone oil, liquid paraffin, and surfactant. In one embodiment, the antifouling layer may be a silicone resin layer or a fluorine resin layer containing silicone oil and / or liquid paraffin.

  As silicone oil, for example, KF96L, KF96, KF69, KF99, KF50, KF54, KF410, KF412, KF414, FL, manufactured by Shin-Etsu Chemical Co., Ltd., BY16-846, SF8416, SH203 manufactured by Toray Dow Corning Co., Ltd. , SH230, SF8419, FS1265, SH510, SH550, SH710, FZ-2110, FZ-2203.

  Examples of the surfactant include an anionic surfactant, a cationic surfactant, and a nonionic surfactant.

  As antifouling agents, diatomaceous adhesion inhibitors, agricultural chemicals, pharmaceuticals (such as medetomidine), enzyme activity inhibitors (such as alkylphenols and alkylresorcinols), and biological repellents may be used. By using these antifouling agents, the adhesion preventing effect of aquatic organisms such as diatoms and barnacles is further improved.

  The antifouling layer may contain any appropriate other additive as long as the effects of the present invention are not impaired.

  Moreover, a commercially available coating composition can also be used as an antifouling layer forming material. Examples of the commercially available coating composition include trade names “Peracrine” and “Bioclin” manufactured by China Paint Co., Ltd., and “Everclean” manufactured by NKM Coatings.

  Arbitrary appropriate thickness can be employ | adopted for the thickness of a pollution protection layer according to a use, use environment, etc. The thickness of the antifouling layer is preferably 5 to 500 μm. When the thickness of the antifouling layer is less than 5 μm, the period during which the antifouling effect is effective is shortened and may not be practical. If the thickness of the antifouling layer is more than 500 μm, the antifouling pressure-sensitive adhesive sheet becomes thick and increases in weight, so that the handling property is deteriorated, the unevenness of the overlapped portion of the sheet is increased, and there is a possibility that the dirt is likely to be attached. is there.

[A-6. Adhesion fee]
The end portion of the antifouling pressure-sensitive adhesive sheet (for example, at least one widthwise end portion of the strip-shaped antifouling pressure-sensitive adhesive sheet) includes a base material layer and an adhesive layer that extend outward from the antifouling layer. An adhesive allowance may be provided.

  The cutting wire may be attached to an end of the antifouling pressure-sensitive adhesive sheet where the bonding margin is located (for example, the boundary between the bonding margin and the antifouling layer).

  The width of the bonding allowance is set to any appropriate width according to the shape, dimensions, etc. of the antifouling adhesive sheet. The width of the bonding allowance is, for example, 1 cm or more, preferably 2 cm or more. If it is such a width | variety, since it can fully function as an adhesion allowance, the effect of this invention can be acquired suitably. The upper limit of the width of the bonding allowance is, for example, 10 cm from the viewpoint of economy and workability.

  The adhesive force between the substrate layer side surface of the adhesive allowance and the adhesive layer is preferably more than the adhesive force between the structure surface to be antifouling treated and the adhesive layer, and the adhesive force between the structure surface and the adhesive layer is More preferably. Thereby, when the end portions of the adjacent antifouling pressure-sensitive adhesive sheets are overlapped and pasted, the other pressure-sensitive adhesive sheet is made to adhere very firmly to the bonding allowance (base layer side surface) of one pressure-sensitive adhesive sheet. Can do. As a result, peeling from the overlapped portion can be suitably prevented without increasing the adhesion between the structure surface and the antifouling pressure-sensitive adhesive sheet to a level where it is difficult to remove the antifouling pressure-sensitive adhesive sheet. . The adhesive force between the base material layer side surface of the adhesive allowance and the adhesive layer (180 degree peel adhesive force at 23 ° C. and a tensile speed of 300 mm / min) is preferably 15 N / 20 mm or more, more preferably 20 N / 20 mm or more. . When removing the antifouling pressure-sensitive adhesive sheet from the surface of the structure, a plurality of pressure-sensitive adhesive sheets can be peeled together, so that the overlapped part leads to adhesion, and both are integrated. Good.

An easy adhesion treatment may be performed on the substrate layer side surface of the bonding allowance, if necessary. By the easy adhesion treatment, the adhesive force to the pressure-sensitive adhesive layer stacked thereon can be improved. Any appropriate chemical surface treatment, physical surface treatment, and combinations thereof may be used as the easy adhesion treatment. Specific examples include vapor deposition of metals, oxides, inorganics, etc .; sputtering of oxygen, nitrogen, argon, etc .; plasma treatment; acids such as hydrochloric acid, sulfuric acid, nitric acid, alkalis such as sodium hydroxide, potassium hydroxide, or organic solvents Surface treatment by UV; ozone irradiation; corona discharge treatment; flame treatment; application of coupling agent; roughening treatment by mold shape transfer, sand blasting, stretching and bending; filler to substrate forming material, coupling agent And the like.
The easy adhesion treatment to the base material layer side surface of the adhesive allowance may be performed before lamination of the base material layer and the pressure-sensitive adhesive layer, or may be performed after lamination of the base material layer and the pressure-sensitive adhesive layer.

  Moreover, you may apply | coat the material which can adhere | attach with the adhesion layer by reacting with the formation material of an adhesion layer on the base material layer side surface of an adhesion allowance.

[A-7. Method for producing antifouling pressure-sensitive adhesive sheet]
The antifouling pressure-sensitive adhesive sheet can be produced by any appropriate method.
As a method for forming the base material layer and the adhesive layer, for example, a method in which a separately prepared base material layer and an adhesive layer are bonded together, and an adhesive layer forming material is applied to one surface of the base material layer to form an adhesive layer And a method of coextruding the base material layer forming material and the adhesive layer forming material to form a base material layer / adhesive layer laminate.
Examples of the method for forming the antifouling layer include a method of applying an antifouling layer forming material on the base material layer. The antifouling layer may be formed before the base material layer and the adhesive layer are laminated, or after the base material layer and the adhesive layer are laminated.
The method for attaching the cutting wire is as described above in the section A-2.

The antifouling pressure-sensitive adhesive sheet in which the bonding margin including the base material layer and the pressure-sensitive adhesive layer extending outward from the antifouling layer is provided at the end can be produced by any appropriate method.
As such a method, for example, when the antifouling layer forming material is applied on the base material layer to form the antifouling layer, it is applied so as to leave an untreated part at the end of the antifouling pressure-sensitive adhesive sheet. A method is mentioned. In the case of this method, the untreated part finally becomes a bonding allowance.

  Examples of the method for applying the antifouling layer forming material on the base material layer include spraying, brushing, roller, curtain flow, roll, dip and the like. By applying the antifouling layer forming material on the base material layer by these methods, for example, by drying at a temperature from room temperature (for example, 15 ° C.) to 250 ° C. (preferably, a temperature from room temperature to 180 ° C.), An antifouling layer can be formed.

[B. Construction method]
The construction method of the structure includes the steps 1 to 3 described above. The outline is described below.

  FIG. 5 is a schematic diagram illustrating a construction method for a structure according to one embodiment of the present invention.

  In step 1 of the present embodiment, the antifouling pressure-sensitive adhesive sheet A has the antifouling layer 30, the base material layer 10, and the adhesive layer 20 in this order, and the cutting wire 40 is attached to the surface of the adhesive layer 20. An antifouling pressure-sensitive adhesive sheet (that is, the antifouling pressure-sensitive adhesive sheet of the present invention described in the above section A) and an optional antifouling pressure-sensitive adhesive sheet B are prepared.

  In step 2 of the present embodiment, as shown in FIG. 5A, after the antifouling pressure-sensitive adhesive sheet A100 is attached to the surface where the contamination of the structure 300 is to be prevented, as shown in FIG. 5B. Further, the antifouling pressure-sensitive adhesive sheet B200 is affixed to the surface of the structure so that the end portion overlaps the cutting wire of the antifouling pressure-sensitive adhesive sheet A100.

  In step 3 of the present embodiment, the cutting wire 40 is peeled in a direction orthogonal to the surface of the structure 70 as shown in FIG. In this embodiment, not only the end of the antifouling adhesive sheet B200 on the cutting wire 40 of the antifouling adhesive sheet A100, but also the end of the antifouling adhesive sheet A100 (the end of the base material layer 10 and (Including both ends of the adhesive layer 20).

As shown in FIG. 5 (d), the construction method of the structure according to this embodiment includes the cut surface of the antifouling pressure-sensitive adhesive sheet B200 and the above-described peeled cutting wire of the antifouling pressure-sensitive adhesive sheet A. You may have the process of abutting the terminal of a side (in this case, a cut surface) (process 4).
Hereinafter, each process will be described more specifically.

[B-1. Step 1]
In step 1, as described above, the antifouling pressure-sensitive adhesive sheet (antifouling pressure-sensitive adhesive sheet A) and the antifouling pressure-sensitive adhesive sheet B according to the embodiment of the present invention are prepared.

  As the antifouling pressure-sensitive adhesive sheet B, any appropriate antifouling pressure-sensitive adhesive sheet can be used, and examples thereof include an antifouling pressure-sensitive adhesive sheet comprising a base material layer and an adhesive layer provided on one surface side thereof. . The antifouling pressure-sensitive adhesive sheet B may be the antifouling pressure-sensitive adhesive sheet according to the present invention in the same manner as the antifouling pressure-sensitive adhesive sheet A.

  Examples of the combination of the antifouling pressure-sensitive adhesive sheet A and the antifouling pressure-sensitive adhesive sheet B include, for example, (i) the antifouling pressure-sensitive adhesive sheet A and the antifouling pressure-sensitive adhesive sheet B, the cutting wire material being the surface of the pressure-sensitive adhesive layer, Combination of antifouling pressure-sensitive adhesive sheets according to the present invention attached to the inside of the pressure-sensitive adhesive layer or the interface between the pressure-sensitive adhesive layer and the base material layer, or (ii) the antifouling pressure-sensitive adhesive sheet A and the antifouling pressure-sensitive adhesive sheet B In any case, the antifouling pressure-sensitive adhesive sheet according to the present invention having an adhesive allowance including a base material layer and an adhesive layer that extend outward from the antifouling layer at the end (for example, the cutting wire is made of an adhesive The combination which is the antifouling pressure-sensitive adhesive sheet according to the present invention attached to the boundary with the soil layer is mentioned.

  As a preferable aspect when the combination of the antifouling pressure-sensitive adhesive sheet A and the antifouling pressure-sensitive adhesive sheet B is (i), for example, in any of the antifouling pressure-sensitive adhesive sheet A and the antifouling pressure-sensitive adhesive sheet B, ( 1) When the cutting wire is attached to the adhesive layer surface, (2) When the cutting wire is attached inside the adhesive layer, and (3) The cutting wire is the adhesive layer and the base material layer. And attached to the interface.

[B-2. Step 2]
(I) Process outline In process 2, at least one antifouling pressure-sensitive adhesive sheet A and at least one antifouling pressure-sensitive adhesive sheet B are applied to the surface of the structure having a surface to be prevented from being contaminated. It sticks so that the edge part of the antifouling adhesive sheet B may be on the said cutting wire of the antifouling adhesive sheet A.

  The end of the antifouling pressure-sensitive adhesive sheet B is, for example, 0.1 cm to 25 cm, preferably 0.2 cm to 15 cm, more preferably 0.5 cm to 5 cm, exceeding the cutting wire, and the antifouling pressure sensitive adhesive sheet A. Can be attached so as to overlap. In this case, the cutting and removal by the cutting wire can be performed more reliably, and the end portion to be cut and removed can be kept to a minimum.

  More specifically, for example, in addition to the method described with reference to FIGS. 5 (a) and 5 (b), the end of the antifouling pressure-sensitive adhesive sheet B may be used as an affixing method in step 2. The method of sticking the adhesive sheet set stuck beforehand so that it may become on the wire rod for cutting | disconnection of the soiling adhesive sheet A to the structure surface is mentioned.

Typically, the antifouling pressure-sensitive adhesive sheet A and the antifouling pressure-sensitive adhesive sheet B are pasted so as to cover the entire surface of the structure where contamination should be prevented. It may be pasted so as to cover only.
On the surface to be prevented from being contaminated, it is preferable that the end portions of the antifouling pressure-sensitive adhesive sheet overlap each other without a gap, but within a range not impairing the effects of the present invention, the antifouling pressure-sensitive adhesive sheet A and the antifouling material There may be a gap between the pressure-sensitive adhesive sheet B and no overlapping portion.

  When the antifouling pressure-sensitive adhesive sheet B has, for example, a belt shape, the end in the width direction of the antifouling pressure-sensitive adhesive sheet B has one or more (for example, one) edge portions (for example, a belt-like shape). The end of the antifouling pressure-sensitive adhesive sheet A in the width direction) can be affixed on the cutting wire. When the antifouling pressure-sensitive adhesive sheet A and the antifouling pressure-sensitive adhesive sheet B have, for example, a band shape, the end in the width direction of the antifouling pressure-sensitive adhesive sheet B is the antifouling pressure-sensitive adhesive sheet B across the entire area in the long side direction. It can stick so that it may become on the wire rod for cutting | disconnection of the adhesive sheet A for dirt.

  In one embodiment, a part (for example, one or both lengthwise ends) of the above-mentioned cutting wire may be arranged outside the antifouling adhesive sheet affixed to the structure surface. As a case where a part of the cutting wire is arranged outside the attached antifouling adhesive sheet, for example, (i) a part of the cutting wire is not attached to the antifouling adhesive sheet And when it is arranged outside the antifouling pressure-sensitive adhesive sheet to which the part is affixed, and (ii) another antifouling pressure-sensitive adhesive sheet to which a part of the affixed antifouling pressure-sensitive adhesive sheet is affixed In the case where the cutting wire is attached to a part of the wire, it may be mentioned. In these cases, there is a cutting wire portion not covered with the antifouling pressure-sensitive adhesive sheet, and it becomes easier to pull up the cutting wire, so that the workability at the time of peeling of the cutting wire is improved. In the case of (i), it becomes easier to pull up the cutting wire by using a part of the cutting wire as a tensile allowance.

  When sticking these pressure-sensitive adhesive sheets, for example, a construction liquid containing any appropriate surfactant can be used. In this case, the entrapment of bubbles can be prevented. In particular, it is effective when sticking an adhesive sheet having a large area.

  In the following (ii) to (v), some embodiments when the antifouling pressure-sensitive adhesive sheet B has the same configuration as the antifouling pressure-sensitive adhesive sheet A (embodiments a, b, c) And d) will be described with reference to the drawings. In this case, in step 2, the end of one antifouling pressure-sensitive adhesive sheet A is placed on the cutting wire of another antifouling pressure-sensitive adhesive sheet A on the surface where the contamination of the structure 70 is to be prevented. Affix to

  The antifouling pressure-sensitive adhesive sheet (substantially the antifouling pressure-sensitive adhesive sheet A) used in the embodiments a, b, c and d is referred to as an antifouling pressure-sensitive adhesive sheet 100.

(Ii) Embodiment a
FIG. 6 is a schematic diagram illustrating one embodiment (embodiment a) of step 2. In the embodiment a, the antifouling pressure-sensitive adhesive sheet 100 is sequentially attached to the surface (in the illustrated example, the bottom of the ship) where contamination of the structure 70 is to be prevented.

  First, the antifouling pressure-sensitive adhesive sheet 100 is continuously pasted from the position above the waterline on one side of the ship to the position above the waterline on the opposite side through the ship bottom. The antifouling pressure-sensitive adhesive sheet 100 has a strip shape (typically, a roll shape), and one cutting wire 40 is attached in the long side direction over the entire end portion in one width direction. The attaching direction of the antifouling pressure-sensitive adhesive sheet 100 substantially coincides with the long side direction. For example, the roll-shaped antifouling pressure-sensitive adhesive sheet 100 can be attached using a roll applicator. At least two antifouling pressure-sensitive adhesive sheets 100 are attached. The antifouling pressure-sensitive adhesive sheet 100 is attached so that the cutting wire 40 is substantially parallel. Further, the intervals of the cutting wire 40 are substantially equal. In the present specification, “substantially equidistant” includes a case where it is substantially equidistant, and an error in the interval is, for example, ± 20%, preferably ± 10%, more preferably ± 5. %, Particularly preferably ± 1%.

  Next, as shown to Fig.6 (a), the edge part of the width direction of the side which does not have the cutting wire 40y of the antifouling adhesive sheet 100y on the cutting wire 40x of the antifouling adhesive sheet 100x is shown. The antifouling pressure-sensitive adhesive sheet 100y is stuck so as to be disposed. At this stage, the antifouling pressure-sensitive adhesive sheet 100 is not disposed on the cutting wire 40y of the antifouling pressure-sensitive adhesive sheet 100y. Next, as shown in FIG. 6B, on the cutting wire 40y of the antifouling pressure-sensitive adhesive sheet 100y, the end in the width direction on the side of the antifouling pressure-sensitive adhesive sheet 100z that does not have the cutting wire 40z is formed. The antifouling pressure-sensitive adhesive sheet 100z is attached so as to be disposed.

  By repeating the above-mentioned pasting sequentially, step 2 of the above construction method can be carried out on a structure having a surface to be prevented from being contaminated with no gap and good workability.

(Iii) Embodiment b
FIG. 7 is a schematic diagram illustrating a construction method for a structure according to another embodiment (embodiment b) of the present invention. In the embodiment b, the antifouling pressure-sensitive adhesive sheet 100 a shown in FIG. 1 is used as the antifouling pressure-sensitive adhesive sheet 100.

First, as shown to Fig.7 (a), the antifouling adhesive sheet 100a is stuck on the surface where the contamination of the structure 70 should be prevented.
Next, as shown in FIG. 7 (b), the surface of the structure 70 to be prevented from being contaminated and the end portion on the side having the cutting wire 40 of the antifouling pressure-sensitive adhesive sheet 100a previously attached. The antifouling pressure-sensitive adhesive sheet 100a ′ is attached so as to be adjacent to each other. At this time, the end of the antifouling pressure-sensitive adhesive sheet 100a ′ on the side not having the cutting wire 40 ′ overlaps with the end of the antifouling pressure-sensitive adhesive sheet 100a on the side having the cutting wire 40 ′, for cutting. It sticks so that it may be located on the wire 40. FIG. At this stage, the antifouling adhesive sheet is not disposed on the cutting wire 40 ′ of the antifouling adhesive sheet 100a ′.
Next, as shown in FIG.7 (c), it adjoins the surface which should prevent the contamination of the structure 70, and the edge part side of the side which has the wire 40 'for cutting | disconnection of the antifouling adhesive sheet 100a'. In this manner, the antifouling pressure-sensitive adhesive sheet 100a ″ is attached. At this time, the end of the antifouling pressure-sensitive adhesive sheet 100a ″ on the side not having the cutting wire 40 ″ is on the end of the antifouling pressure-sensitive adhesive sheet 100a ′ on the side having the cutting wire 40 ′. Affix and stick so as to be positioned on the cutting wire 40 '.
By repeating the above-mentioned pasting sequentially, step 2 of the above construction method can be carried out on a structure having a surface to be prevented from being contaminated with no gap and good workability.

(Iv) Embodiment c
FIG. 8 is a schematic diagram illustrating a construction method for a structure according to still another embodiment (embodiment c) of the present invention. In embodiment c, the antifouling pressure-sensitive adhesive sheet 100b shown in FIG. 2 is used as the antifouling pressure-sensitive adhesive sheet A and the antifouling pressure-sensitive adhesive sheet B.
The details of step 2 in the embodiment c are carried out except that the antifouling pressure-sensitive adhesive sheet 100b is used in place of the antifouling pressure-sensitive adhesive sheet 100a as shown in FIGS. 8 (a), (b) and (c). It is the same as the form b.

(V) Embodiment d
FIG. 9 is a schematic diagram illustrating a construction method for a structure according to still another embodiment (embodiment d) of the present invention. In the embodiment d, the antifouling pressure-sensitive adhesive sheet 100d shown in FIG. 4 is used as the antifouling pressure-sensitive adhesive sheet A and the antifouling pressure-sensitive adhesive sheet B.

First, as shown in FIG. 9A, an antifouling pressure-sensitive adhesive sheet 100d is affixed to the surface where contamination of the structure 70 is to be prevented.
Next, as shown in FIG. 9B, on the surface where the contamination of the structure 70 is to be prevented and on the end portion side of the antifouling pressure-sensitive adhesive sheet 100d, which has the wire 40 for cutting, attached thereto. The antifouling pressure-sensitive adhesive sheet 100d ′ is attached so as to be adjacent to each other. At this time, the end of the antifouling pressure-sensitive adhesive sheet 100d ′ on the side not having the cutting wire 40 ′ overlaps with the end of the antifouling pressure-sensitive adhesive sheet 100d on the side having the cutting wire 40 ′, for cutting. It sticks so that it may be located on the wire 40. FIG. Further, the width of the overlapping portion is larger than the width of the adhesive allowance 50, and a part of the end portion of the antifouling pressure-sensitive adhesive sheet 100d ′ that does not have the cutting wire 40 ′ is part of the antifouling pressure-sensitive adhesive sheet 100d. It sticks so that it may ride on antifouling layer 30. At this stage, the antifouling pressure-sensitive adhesive sheet is not disposed on the cutting wire 40 ′ of the antifouling pressure-sensitive adhesive sheet 100d ′.
Next, as shown in FIG. 9 (c), the surface of the structure 70 to be prevented from being contaminated and adjacent to the end of the antifouling adhesive sheet 100d ′ on the side having the cutting wire 40 ′. Thus, the antifouling pressure-sensitive adhesive sheet 100d ″ is attached. At this time, the end of the antifouling pressure-sensitive adhesive sheet 100d ″ that does not have the cutting wire 40 ″ is on the end of the antifouling pressure-sensitive adhesive sheet 100d ′ that has the cutting wire 40 ′. Affix and stick so as to be positioned on the cutting wire 40 '. Further, the width of the overlapping portion is larger than the width of the adhesive allowance 50 ′, and a part of the end portion of the antifouling pressure-sensitive adhesive sheet 100d ″ that does not have the cutting wire 40 ″ is an antifouling pressure-sensitive adhesive. It sticks so that it may ride on antifouling layer 30 'of sheet 100d'.
By repeating the above-mentioned pasting sequentially, step 2 of the above construction method can be carried out on a structure having a surface to be prevented from being contaminated with no gap and good workability.

  In the embodiment d, as shown in FIGS. 9B and 9C, the antifouling pressure-sensitive adhesive sheet A and the antifouling pressure-sensitive adhesive sheet B are overlapped so that the overlapping width is larger than the width of the adhesive allowance 50. Overlapping. The overlapping width can be applied so as to be larger than the width of the bonding allowance 50 by, for example, 0.1 cm to 25 cm, preferably 0.2 cm to 15 cm, more preferably 0.5 cm to 5 cm. In this case, the cutting and removal by the cutting wire can be performed more reliably, and the end portion to be cut and removed can be kept to a minimum.

(Vi) Others In step 2, according to the shape, size, etc. of the structure, only one of the embodiments a to d may be implemented, or two or more may be implemented in combination. .

In step 2, for example, an adhesive sheet set in which the antifouling adhesive sheet A and the antifouling adhesive sheet B are bonded together is prepared in advance, and the bonded adhesive sheet set is sequentially applied to the surface of the structure. Also good.
Further, for example, the adhesion of the antifouling pressure-sensitive adhesive sheet A and the antifouling pressure-sensitive adhesive sheet B and the adhesion of the bonded pressure-sensitive adhesive sheet set to the structure surface may be performed continuously.

  A specific example is given and the detail about the sticking method of the roll-shaped antifouling adhesive sheet is described. For example, when the structure is a large ship, for example, while hanging a gondola loaded with a roll-shaped antifouling adhesive sheet and a roll applicator on one side of a dry dock, affixing the antifouling adhesive sheet The gondola is lowered to the floor, and the roll applicator and the antifouling adhesive sheet are moved to the opposite side so as to pass through the bottom of the ship. In addition, when the structure is a small ship, for example, the roll-shaped antifouling pressure-sensitive adhesive sheet is unrolled manually to the bottom of the ship, passed through the bottom of the ship to the opposite side, and then lifted and pasted. The ship (boat) can be turned over and stuck on it.

[B-3. Step 3]
In step 3, the end of the antifouling pressure-sensitive adhesive sheet B is cut and removed by peeling the cutting wire from the antifouling pressure-sensitive adhesive sheet A.

In this step, at least the ends of the antifouling pressure-sensitive adhesive sheet B may be cut and removed, but the ends of both the antifouling pressure-sensitive adhesive sheet A and the antifouling pressure-sensitive adhesive sheet B may be cut and removed.
When the edge part of the antifouling pressure-sensitive adhesive sheet A is cut and removed, the edge part to be cut and removed only needs to include at least one of a part of the base material layer and a part of the pressure-sensitive adhesive layer.
Moreover, when the antifouling pressure-sensitive adhesive sheet B to be cut and removed includes a base material layer and an adhesive layer provided on one side of the base material layer, the end portion to be cut and removed is a part of the base material layer. And at least one of the adhesive layer may be included.

  The concept of “peeling” for the cutting wire is as described above. As a means for peeling the cutting wire, any appropriate method can be used, for example, a method of pulling up at least one end of the cutting wire in the peeling direction.

(I) Process outline In process 3, as shown in FIG.5 (c), the wire 40 for a cutting | disconnection can be peeled from the adhesive sheet A for antifouling in the direction orthogonal to the surface of the structure 70. FIG.
In the present embodiment, not only the end of the antifouling adhesive sheet B on the cutting wire 40 of the antifouling adhesive sheet A, but also the end of the antifouling adhesive sheet A (the end of the base material layer 10 and (Including both ends of the adhesive layer 20).
By performing the above cutting and removal, the overlapping of the adjacent antifouling pressure-sensitive adhesive sheets is eliminated in the vicinity of the cutting wire, and the adjacent antifouling pressure-sensitive adhesive sheets can be brought into contact with each other.

(Ii) Embodiment b
FIG. 7 is a schematic diagram for explaining a construction method according to the embodiment b.
As shown in FIG. 7 (d), in this embodiment, by peeling off the cutting wire 40, the end of the antifouling pressure-sensitive adhesive sheet 100a ′ having an end on the cutting wire 40 (base material layer 10). (Including both of the end portion of the adhesive layer 20 and the end portion of the adhesive layer 20), and the end portion of the antifouling pressure-sensitive adhesive sheet 100 a including the cutting wire 40 (the end portion of the base material layer 10 and the adhesive layer). (Including both ends of 20).
Similarly, by peeling off the cutting wire 40 ′, the end of the antifouling pressure-sensitive adhesive sheet 100a ″ having an end on the cutting wire 40 ′ (the end of the base material layer 10 ″ and the pressure-sensitive adhesive layer 20). And the end of the antifouling adhesive sheet 100a ′ including the cutting wire 40 ′ (the end of the base material layer 10 ′ and the end of the adhesive layer 20 ′). (Including both parts).
As shown in FIG. 7 (d), by performing the above-described cutting and removal, the overlapping of the adjacent antifouling pressure-sensitive adhesive sheets is eliminated in the vicinity of the cutting wire, and a state where they can be matched is obtained.

(Iii) Embodiment c
FIG. 8 is a schematic diagram illustrating a construction method for a structure according to embodiment c.
As shown in FIG. 8 (d), in this embodiment, by peeling the cutting wire 40, the end portion (base material layer 10) of the antifouling adhesive sheet 100b ′ having an end on the cutting wire 40 is removed. (Including both ends of the adhesive layer 20 and the end portion of the adhesive layer 20), and further, the end portion of the antifouling pressure-sensitive adhesive sheet 100 b including the cutting wire 40 (including the end portion of the base material layer 10). And the edge of the adhesive layer 20 is not included). That is, the end portion of the antifouling pressure-sensitive adhesive sheet 100b cut and removed by the cutting wire 40 includes the end portion of the base material layer 10 but does not include the end portion of the adhesive layer 20, and Embodiment b and It is the same.
Similarly, by peeling off the cutting wire 40 ′, the end of the antifouling adhesive sheet 100b ″ having an end on the cutting wire 40 ′ (the end of the base material layer 10 ″ and the adhesive layer 20). And the end of the antifouling adhesive sheet 100b ′ including the cutting wire 40 ′ (including the end of the base material layer 10 ′). Cut off (not including the end of ').
As shown in FIG. 8 (d), by carrying out the above cutting and removing, the surface of the adhesive layer on the side having the wire for cutting of the one antifouling adhesive sheet (base layer) And the adhesive layer surface at the end of the other antifouling pressure-sensitive adhesive sheet adjacent to the one antifouling pressure-sensitive adhesive sheet on the side having no cutting wire. Thus, the matching is possible.

(Iv) Embodiment d
FIG. 9 is a schematic diagram illustrating a construction method for a structure according to Embodiment d.
As shown in FIG. 9 (d), in this embodiment, by peeling the cutting wire 40, the end portion (base material layer 10) of the antifouling pressure-sensitive adhesive sheet 100d ′ having an end on the cutting wire 40 is removed. (Including the end of ', the end of the adhesive layer 20', and the end of the antifouling layer 30 '). In the present embodiment, the end portion of the antifouling pressure-sensitive adhesive sheet 100 d including the cutting wire 40 is not cut and removed by the cutting wire 40.
Similarly, by peeling off the cutting wire 40 ′, the end of the antifouling adhesive sheet 100d ″ having an end on the cutting wire 40 ′ (the end of the base material layer 10 ″, the adhesive layer 20). (Including the ends of '' and the ends of the antifouling layer 30 ''). In the present embodiment, the end portion of the antifouling pressure-sensitive adhesive sheet 100a ′ including the cutting wire 40 ′ is not cut and removed by the cutting wire 40 ′.
As shown in FIG. 9 (d), by performing the above-described cutting and removal, in the adjacent antifouling pressure-sensitive adhesive sheet, a portion that has been superposed beyond the bonding allowance is removed, and one antifouling pressure-sensitive adhesive sheet is cut. The end of the pressure-sensitive adhesive layer and the base material layer at the end having the wire rod and the end of the other antifouling pressure-sensitive adhesive sheet adjacent to the one antifouling pressure-sensitive adhesive sheet are brought into contact with each other. In addition, the end of the antifouling layer at the end of the one antifouling pressure-sensitive adhesive sheet on the side having the cutting wire is in contact with the end of another antifouling pressure-sensitive adhesive sheet adjacent to the one antifouling pressure-sensitive adhesive sheet. Will be possible.

[B-4. Step 4]
The construction method of the structure of the present invention further includes a process of matching the cut surface of the antifouling pressure-sensitive adhesive sheet B and the end of the antifouling pressure-sensitive adhesive sheet A on the side of the separated cutting wire (step 4). May be. Any appropriate method can be selected as the method of matching.

For example, (i) the end of the antifouling pressure-sensitive adhesive sheet A from which the end is cut and removed by the cutting wire (for example, the cut surface and the antifouling pressure-sensitive adhesive sheet A) And / or (ii) the end of the antifouling pressure-sensitive adhesive sheet A (for example, the end of the pressure-sensitive adhesive layer) whose end portion was not cut and removed by the cutting wire.
Step 4 of the preferred embodiment is shown in FIGS. 5 (d), 7 (e), 8 (e) and 9 (e).

[C. Structure]
In the present specification, a structure having a surface to be prevented from being contaminated and obtained by the construction method is also described. The details of the construction method of the structure are as described above.

  The structure can be any suitable structure as long as it has a surface to be prevented from contamination. As structures, for example, underwater structures such as ships, buoys, port facilities, offshore oilfield facilities, cooling water supply channels of power plants, cooling water supply channels of factories, propellers for wind power generation, piers, buildings, automobiles, Heavy machinery and aircraft. Since the effects of the present invention can be suitably obtained, the structure is preferably an underwater structure. Further, an antifouling paint or an anticorrosive paint may be applied to the surface where the contamination of the structure is to be prevented.

  Examples of the present invention will be described below, but the present invention is not limited thereto.

[Example 1]
(Base material layer)
In a reaction vessel, isobornyl acrylate (Osaka Organic Chemical Co., Ltd.): 71 parts by weight, n-butyl acrylate (Toa Gosei Co., Ltd.): 19 parts by weight, poly (oxytetramethylene) glycol (Mitsubishi Chemical) 68.4 parts by weight, dibutyltin dilaurate: 0.01 parts by weight, hydrogenated xylylene diisocyanate (manufactured by Mitsui Chemicals Polyurethanes Co., Ltd.): 25.5 parts by weight are added and mixed. Polymerization was carried out at 0 ° C. for 5 hours, whereby a mixture 1 was obtained.

  To the obtained mixture 1, 3-acryloxypropyltrimethoxysilane (manufactured by Shin-Etsu Chemical Co., Ltd.): 1 part by weight, trimethylolpropane triacrylate: 5 parts by weight, diphenyl (2,4,6, -trimethoxy) Benzoyl) phosphine oxide (made by BASF): 0.25 parts by weight, trade name “TINUVIN123” (made by BASF): 1.25 parts by weight, trade name “TINUVIN400” (made by BASF): 0.6 parts by weight are added and mixed As a result, syrup 1 was obtained.

The obtained syrup 1 was applied to the surface of a separator (trade name “MRF38”, manufactured by Mitsubishi Plastics Co., Ltd.) to a thickness of 150 μm to form a syrup layer. Under a nitrogen purge environment, the syrup layer was irradiated with ultraviolet rays (illuminance: 3.4 mW / cm ² , integrated irradiation amount: 2000 mJ / cm ² ) with an ultraviolet lamp (black light) to be cured by polymerization. A layer was obtained.

(Adhesive layer)
Into a reaction vessel, 2-ethylhexyl acrylate: 90 parts by weight, acrylic acid: 10 parts by weight, photopolymerization initiator (trade name “Irgacure 651”, manufactured by BASF): 0.1 part by weight are added, mixed, and stirred. While being irradiated with ultraviolet rays, UV polymerization was carried out to a coatable viscosity. 1,6-hexanediol diacrylate: 0.08 part by weight was added to and mixed with the obtained pressure-sensitive adhesive mixture, and this was added to the surface of a separator (trade name “MRF38”, manufactured by Mitsubishi Plastics Co., Ltd.) of 50 μm. It applied so that it might become thickness. Under a nitrogen purge environment, the coating layer was irradiated with ultraviolet rays (illuminance: 3.4 mW / cm ² , integrated irradiation amount: 2000 mJ / cm ² ) with an ultraviolet lamp (black light) to be polymerized and cured, whereby the adhesive layer Got.

(Anti-fouling layer)
An antifouling coating composition (manufactured by China Paint Co., Ltd., product name “Peracrine”) was applied to one surface of the base material layer using an applicator so that the thickness after drying was 100 μm, An antifouling layer was formed by drying for 10 minutes.

(Anti-fouling adhesive tape)
Subsequently, the said adhesion layer was bonded together on the other surface of the said base material layer. At this time, an antifouling pressure-sensitive adhesive having a wire rod for cutting at the end in the width direction by adhering a nylon thread (Tegs 2; diameter: 235 μm) while being wound so that the distance from the long side is 1 cm in the width direction. Tape 1 was obtained. The structure of the obtained antifouling pressure-sensitive adhesive tape 1 was antifouling layer (thickness: 100 μm) / base material layer (thickness: 150 μm) / cutting wire (nylon thread) / adhesive layer (thickness: 50 μm).

(Paste, end cutting)
The antifouling pressure-sensitive adhesive tape 1 was affixed by the method shown below. Specifically, the antifouling pressure-sensitive adhesive tape 1 was attached to a boat having a steel plate surface coated with an anticorrosive paint (manufactured by China Paint Co., Ltd., product name “Banno 500”). Next, the end portion of the antifouling pressure-sensitive adhesive tape 1 having the cutting wire was attached so as to overlap with the end portion of the second antifouling pressure-sensitive adhesive tape 1 having no cutting wire by about 3 cm. The nylon thread was pulled up to cut the overlapping end portion of the antifouling pressure-sensitive adhesive sheet, and the cut end portion was removed as an excess portion. With the above processing, high-precision matching processing can be performed with a simple operation.

[Example 2]
An antifouling pressure-sensitive adhesive tape 2 was obtained in the same manner as in Example 1 except that a nylon twisted yarn (three twists of 120 denier; diameter of about 240 μm) was used as a cutting wire and was attached by the following method.
After the adhesive tape obtained by bonding the adhesive layer to the base material layer is temporarily stored in a packaging box as a roll, the separator is peeled off while pulling out the adhesive tape from the packaging box, and a spinning wheel provided at a predetermined position is used. And the said nylon twisted yarn was affixed on the adhesive layer surface of the position of 2 cm of width directions from the long side of the said adhesive tape, and the adhesive tape 2 for antifouling was obtained. The structure of the obtained antifouling pressure-sensitive adhesive tape 2 was antifouling layer (thickness: 100 μm) / base material layer (thickness: 150 μm) / adhesive layer (thickness: 50 μm) / cutting wire (nylon twisted yarn).
The antifouling tape was colorless and transparent, and the nylon twisted yarn was red.

As in Example 1, the antifouling pressure-sensitive adhesive tape 2 is applied to the boat, the nylon twisted yarn is pulled up, the overlapping end portion of the antifouling pressure-sensitive adhesive sheet is cut, and the cut end portion is removed as an excess portion. As a result, it was possible to perform a high-precision matching process with a simple operation.
In addition, the use of the colored wire rods improved the visibility of the dark blue color of the ship bottom that was the object of construction and further improved workability. Specifically, since there was no risk of forgetting to pull up the wire rod or forgetting the end portion, the removal could be performed more efficiently.

[Example 3]
An antifouling pressure-sensitive adhesive tape 3 was obtained in the same manner as in Example 1 except that nylon yarn was attached by the following method.
When the adhesive mixture is applied to the surface of the separator, a portion of the nylon thread sticks at a position 2 cm from the long side of the adhesive tape by placing the nylon thread at a predetermined position from the end of the separator. An integrated product embedded in the layer was obtained, and after drying and curing, it was bonded to the base material layer to obtain an antifouling adhesive tape 3. The structure of the obtained antifouling pressure-sensitive adhesive tape 3 is an antifouling layer (thickness: 100 μm) / base material layer (thickness: 150 μm) / adhesive layer (thickness: 50 μm), which is one of cutting wires (nylon thread). The part was embedded in the adhesive layer.

  As in Example 1, the antifouling adhesive tape 3 is applied to the boat, the nylon thread is pulled up, the overlapping end of the antifouling adhesive sheet is cut, and the cut end is removed as an excess part. As a result, it was possible to perform a high-precision matching process with a simple operation.

[Example 4]
Except for the following, an antifouling pressure-sensitive adhesive tape 4 was obtained in the same manner as in Example 1.
First, at the time of forming the antifouling layer, an uncoated part (adhesion allowance) having a width of 2 cm was left at one end of the base material layer. At the end of the antifouling layer formed, an inclination angle of about 30 degrees was generated due to sagging caused by flow during drying.
After the adhesive tape obtained by bonding the adhesive layer to the base material layer is temporarily stored in a packaging box as a roll, the separator is peeled off while pulling out the adhesive tape from the packaging box, and a spinning wheel provided at a predetermined position is used. Thus, a nylon thread was affixed to the boundary between the adhesive allowance of the adhesive tape and the antifouling layer to obtain an antifouling adhesive tape 4.

  The end of the antifouling pressure-sensitive adhesive tape 4 that does not have the cutting wire overlaps with the end of the other antifouling pressure-sensitive adhesive tape 4 that has the cutting wire, and the overlapping portion exceeds the bonding margin by about 3 cm. The antifouling pressure-sensitive adhesive tape 4 was affixed to the boat in the same manner as in Example 1 except that it was affixed to the boat. Pull up the nylon thread and cut the end of the two antifouling pressure-sensitive adhesive sheets 4 that exceed the bonding allowance of the antifouling pressure-sensitive adhesive sheet 4, and remove the cut edge as an excess part. By doing so, it was possible to perform a high-precision matching process with a simple operation.

  Thereafter, the pasted portion was left in a state of being immersed in seawater, and the change with time was observed, but the adhesion of the overlapped portion was strong and the pasted state was not changed. Further, when an attempt was made to peel off the antifouling pressure-sensitive adhesive tape, the joint between the two antifouling pressure-sensitive adhesive tapes was firmly integrated, and no peeling occurred at the overlapping portion. On the other hand, peeling of the antifouling adhesive tape from the boat body was feasible.

  The antifouling pressure-sensitive adhesive sheet and the antifouling treatment method of the present invention can be suitably applied to prevent contamination of the surface of the structure.

100 Antifouling adhesive sheet (Antifouling adhesive sheet A)
200 Antifouling adhesive sheet B
300 Structure 10 Base Material Layer 20 Adhesive Layer 30 Antifouling Layer 40 Cutting Wire 50 Adhesive Fee

Claims (8)

An antifouling pressure-sensitive adhesive sheet comprising a base material layer and an adhesive layer provided on one surface side of the base material layer and an antifouling layer provided on the surface side of the base material layer where the adhesive layer is not provided,
An antifouling pressure-sensitive adhesive sheet, wherein a cutting wire is detachably attached to an end of the antifouling pressure-sensitive adhesive sheet.   The cutting wire is attached to a surface side surface of the adhesive layer opposite to the base material layer, inside the adhesive layer, or an interface between the adhesive layer and the base material layer. The antifouling pressure-sensitive adhesive sheet described in 1.   The pressure-sensitive adhesive sheet for antifouling according to claim 1, wherein an adhesive margin including the base material layer and the pressure-sensitive adhesive layer extending outward from the antifouling layer is provided at an end portion.   The antifouling pressure-sensitive adhesive sheet according to claim 3, wherein the cutting wire is attached to a boundary between the bonding allowance and the antifouling layer.   The antifouling pressure-sensitive adhesive sheet according to any one of claims 1 to 4, wherein the cutting wire is colored. Preparing the antifouling pressure-sensitive adhesive sheet A according to any one of claims 1 to 5 and the antifouling pressure-sensitive adhesive sheet B (step 1);
At least one antifouling pressure-sensitive adhesive sheet A and at least one antifouling pressure-sensitive adhesive sheet B are attached to the surface of the structure having a surface to be prevented from being contaminated, and the end of the antifouling pressure-sensitive adhesive sheet B is Affixing the antifouling adhesive sheet A so as to be on the cutting wire (step 2), and peeling the cutting wire from the antifouling adhesive sheet A, A method for constructing a structure, including cutting and removing the end (step 3).   The construction of the structure according to claim 6, further comprising abutting the cut surface of the antifouling pressure-sensitive adhesive sheet B and the end of the antifouling pressure-sensitive adhesive sheet A on the side of the separated cutting wire (step 4). Method. The construction method according to claim 6 or 7, wherein the cutting wire is colored in a color different from a surface on which contamination of the structure is to be prevented.

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