JPH09291690A - Soundproof flooring material with pressure-sensitive adhesive layer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the lowering of adhesion by successively laminating a cushioning material layer, a pressure-sensitive adhesive layer and a release sheet on the rear of a flooring wooden board material and using butyl rubber pressure-sensitive adhesives as the side brought into contact with the release sheet of the pressure-sensitive adhesive layer. SOLUTION: A cushioning material layer 2, which consists of a synthetic resin foam composed of a polyolefin resin, a polyurethane resin, etc., and a nonwoven fabric, etc., and in which a surface is formed in an irregular surface 21, is laminated on the rear of a flooring wooden board material made up of plywood, a fiberboard, etc. A double-coated adhesive tape 4, in which a butyl rubber pressure-sensitive adhesive layer is formed on both surfaces of the nonwoven fabric, a synthetic resin film, etc., is laminated on the peeling treating surface of a release sheet 5. The double-coated adhesive tape 4 is laminated on the irregular surface 21 of the cushioning material layer 2 together with the release sheet 5, and a soundproof flooring material 3 with the pressure-sensitive adhesive layer is formed. Accordingly, even when the soundproof flooring material is cladded onto a mortar or concrete surface, the lowering of adhesion can be prevented because water resistance and resistance to moist heat are improved.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a soundproofing flooring material with a pressure-sensitive adhesive layer, which is suitable for being directly attached to a concrete slab in a building such as a house.

[0002]

2. Description of the Related Art Conventionally, in order to bond a flooring wood board material to a floor base surface, an adhesive has been applied to the floor base surface and pasted together. According to this method, the adhesive is applied in a uniform thickness, and the flooring wood board is pasted after observing an appropriate dry state, so it requires skill, work environment due to solvent odor, work efficiency due to open time, etc. There's a problem.

In addition, recently, there is also one that expects a cushioning property as well as a soundproofing effect by an air layer of a recess by laminating a cushioning material having one surface with an uneven surface on a flooring material. However, the construction using the adhesive has a problem that it is difficult to obtain sufficient cushioning property and soundproofing effect because the cushioning material is partially hardened by the adhesive and the recess is filled.

As a measure for solving the above problems, it has been proposed to join a flooring material and a floor base material block using a double-sided adhesive tape (for example, Japanese Utility Model Laid-Open No. 63-1563).
No. 49).

[0005]

The adhesive used in the ordinary double-sided adhesive tape is an acrylic adhesive, but if a concrete slab and a flooring material are pasted together using this adhesive, the alkali metal from the concrete slab will be removed. There is a problem that the adhesive force is lowered due to the migration of ions into the adhesive. The present invention solves the above conventional problems,
An object of the present invention is to provide a soundproofing flooring material with a pressure-sensitive adhesive layer, which has soundproofness and does not lose its adhesive strength even when it is attached to a concrete surface.

[0006]

A soundproofing flooring material with a pressure-sensitive adhesive layer of the present invention is a soundproofing flooring with a pressure-sensitive adhesive layer in which a cushioning material layer, a pressure-sensitive adhesive layer and a release sheet are laminated in this order on the back surface of a flooring wooden board material. The material is characterized in that the side of the pressure-sensitive adhesive layer that contacts the release sheet is a butyl rubber-based pressure-sensitive adhesive.

In the present invention, the wood board material is made of a plywood base material, and the material is plywood, fiber board, particle board or the like, and a composite board having a vibration damping sheet as an intermediate layer is also used. A decorative veneer may be laminated on the front surface, and slits or depressions having an arbitrary depth may be formed on the back surface. The thicker the wood board, the better the strength, heat insulation, and heat retention. However, considering the floor height and ceiling height, it is 10
Around mm is preferable.

As the cushioning material layer, synthetic resin foam, non-woven fabric, felt or the like is generally used. Polyolefin resin such as polyethylene resin, polypropylene resin, ethylene-vinyl acetate copolymer and polyurethane resin (compressed urethane) are particularly preferable as the foam, and floor impact noise is generated due to the numerous air layers and elasticity of these resins. Can be absorbed and attenuated.

If the foaming ratio of the foam is too low, it is hard and has a small air layer, resulting in a low soundproof effect. On the other hand, if the expansion ratio is too high, the sound insulation effect is good, but the compressive strength is lowered, which causes floor sinking. Therefore, the expansion ratio is preferably 10 to 30 times. The thicker the foam, the better the soundproofing effect, but similarly, there are problems such as an increase in compression strain and the occurrence of instability, so 3 to 5 mm is preferable.

As a non-woven fabric, the basis weight is 150 to 300 g
It is preferable to use cotton or synthetic resin fiber of / m ² from the viewpoints of soundproofing and maintaining compression strength.

The pressure-sensitive adhesive layer in the present invention is a pressure-sensitive adhesive layer formed by simply applying and drying a pressure-sensitive adhesive on the release-treated surface of a release sheet, as well as both sides of a substrate such as a nonwoven fabric, a synthetic resin film or a foam. A pressure-sensitive adhesive layer may be formed on one side, and release paper may be laminated on one pressure-sensitive adhesive layer. A double-sided pressure-sensitive adhesive tape using a base material is preferably a synthetic resin film such as polypropylene or polyester, which has higher strength than non-woven fabric, can impart moisture resistance, and has good workability in the field. Also, when foam is used as the base material, it has a double structure with the cushioning material that is the upper layer, so the cushioning material layer provides sound insulation, and the double-sided adhesive tape base material follows the floor unevenness and heat insulation. However, the thickness of the foam is preferably 1 mm or less because the floor sinks.

A butyl rubber adhesive is used as the adhesive. This is because the adhesive strength is less likely to decrease with time when directly attached to the floor surface of the concrete slab. Therefore, at least the outermost surface may be a butyl rubber pressure-sensitive adhesive, and the whole may be a butyl rubber pressure-sensitive adhesive,
The surface layer may be a butyl rubber adhesive and the inner layer may be another type of adhesive.

As the pressure-sensitive adhesive on the side to be bonded to the cushioning material layer, butyl rubber, acrylic, or other pressure-sensitive adhesive can be appropriately selected and used. Butyl rubber is mainly composed of halogenated butyl rubber, polybutene as a softening agent, zinc thiocarbamate as a cross-linking agent, and an aliphatic hydrocarbon resin as a tackifying resin (for example, Arakawa Chemical Co., Ltd., trade name "ALCON P").
And the like.

The release paper is preferably one in which polyethylene is laminated on the high-quality paper from the viewpoint of on-site peeling / cutting work, and a release treatment with silicone is applied to the laminated surface.

(Function) Since the cushioning material layer, the pressure-sensitive adhesive layer and the release sheet are laminated in this order on the back surface of the flooring wood board, and the side of the pressure-sensitive adhesive layer which contacts the release sheet is the butyl rubber pressure-sensitive adhesive, the back surface of the flooring material is By simply peeling off the release sheet and attaching it to the floor surface, you can fix it to the floor surface easily, reliably and quickly. Moreover, even if the flooring materials are piled up at the work site, the surface of the flooring material will not be soiled by the adhesive. Furthermore, since the pressure-sensitive adhesive layer does not flow, it is not impregnated into the buffer material layer, and the performance can be maintained without impairing the soundproofing effect due to the uneven processing of the buffer material layer.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION Next, an embodiment of the soundproof flooring material with an adhesive layer of the present invention will be described with reference to the drawings. (Example 1) FIG. 1 is a cross-sectional view showing an example of a soundproofing flooring material with an adhesive layer of the present invention, in which a cushioning material layer 2 (nonwoven fabric mat, thickness 5.5 mm) is laminated on the back surface of a floor finish material 1. Soundproofing flooring material 3 (manufactured by Sekisui Jushi Co., Ltd., trade name "Zithlon Floor SF50", size: 75 mm x 90
0 mm) was used. The surface of this cushioning material layer 2 is an uneven surface 2
It is 1.

Polyethylene is laminated on high-quality paper,
The double-sided pressure-sensitive adhesive tape 4 is laminated on the release-treated surface of the release sheet 5 whose laminated surface is treated with silicone, and the double-sided pressure-sensitive adhesive tape 4 is bonded together with the release sheet 5 to the uneven surface 21 of the cushioning material layer 2 of the present invention. It is a soundproofing flooring material with an adhesive layer.

The double-sided adhesive tape 4 is a non-woven fabric provided with butyl rubber adhesive layers on both sides. The adhesive is a mixture of 100 parts by weight of butyl rubber (manufactured by Exxon Chemical Co., Ltd.) and 70 parts by weight of polybutene (manufactured by Idemitsu Petrochemical Co., Ltd.), a tackifying resin (Arakawa Chemical Co., Alcon P100S), a cross-linking agent (Kawaguchi Chemical Co., Ltd., An accelerator BZ) having a composition added thereto was used.

FIG. 2 shows an example in which the bumper layer 2 in the above embodiment is not provided with irregularities, and the other construction and the reference numerals of the drawings are the same as in FIG.

(Comparative Example 1) A double-sided adhesive tape (trade name "Double Tack Tape" manufactured by Sekisui Chemical Co., Ltd.) using an acrylic adhesive was used instead of the butyl rubber adhesive used in Example 1. Was a soundproof flooring material with an adhesive layer similar to that of the example (not shown).

(Comparative Example 2) The same as Example 1 except that a urethane one-pack type adhesive for direct-adhesive flooring material (manufactured by Konishi Co., Ltd., trade name "KU-909W") was used in place of the butyl rubber adhesive. A soundproof flooring material with an adhesive layer was used.

Performance Evaluation (1) With respect to the pressure-sensitive adhesive layer used for the soundproofing flooring material of Example 1 and Comparative Example 1, the 180-degree peeling force of the pressure-sensitive adhesive layer adhered to the mortar base surface was measured according to JIS Z 0237. The measurement was performed after exposure to the atmosphere shown in Table 1. Table 1 shows the results. (2) The soundproof flooring materials of Example 1 and Comparative Example 2 were evaluated according to the following items. Construction time: The average time until completion of construction per 3.3 m ² was measured. Curing time: The average time until the adhesive strength was obtained after the construction was measured (curing temperature 18 ° C). Presence or absence of solvent odor: Presence or absence of odor during construction was confirmed. Soundproofing: The floor impact sound level was measured according to JIS A 1418. Table 2 shows the results.

[0023]

[Table 1]

[0024]

[Table 2]

As is clear from Table 1, Example 1 using the butyl rubber adhesive has much better adhesive strength than the one using the acrylic adhesive, and the adhesive strength does not change with time. . Further, as is clear from Table 2, the working example and the working environment of Example 1 using the butyl rubber pressure-sensitive adhesive are better than those of the conventional one in which the adhesive is applied and dried,
Furthermore, the soundproof effect is also good.

[0026]

EFFECTS OF THE INVENTION The soundproofing flooring material with the pressure-sensitive adhesive layer of the present invention has the above-mentioned constitution, and even if it is stuck to a mortar or a concrete surface, it is excellent in water resistance and wet heat resistance, and its adhesive strength does not decrease with time. It is also excellent in soundproofing. In addition, it can be fixed to the floor surface easily, reliably and quickly.

[Brief description of drawings]

FIG. 1 is a sectional view showing an example of a soundproofing flooring material with an adhesive layer of the present invention.

FIG. 2 is a cross-sectional view showing another embodiment of the soundproofing flooring material with an adhesive layer of the present invention.

[Explanation of symbols]

 1: Floor finishing material 2: Buffer material layer 3: Soundproof flooring material 4: Adhesive layer 5: Release sheet

Claims (1)

[Claims] 1. A soundproof flooring material with a pressure-sensitive adhesive layer, comprising a cushioning material layer, a pressure-sensitive adhesive layer, and a release sheet laminated in this order on the back surface of a flooring wood board, and the side of the pressure-sensitive adhesive layer that contacts the release sheet is butyl rubber. A soundproofing flooring material with an adhesive layer, which is an adhesive.