JP6996684B2 - Fabric hook-and-loop fastener - Google Patents

Description

Application of Article 30, Paragraph 2 of the Patent Law On September 13, 2017, N + was released at an exhibition of materials, machines, and technologies that add new value.

The present invention relates to a cloth hook-and-loop fastener in which a region (A) in which an engaging element is present and a region (B) in which an engaging element is not present are alternately present in both the warp and weft directions. Regarding the manufacturing method.

Conventionally, a loop-shaped cloth surface fastener is obtained by weaving ground warp threads, ground weft threads, and engaging element threads, projecting the engaging element threads on the surface of the base cloth in a loop shape, and fixing the loop shape. In addition, one leg of the loop is cut to form a hook shape, which is used as a hook-shaped cloth surface fastener. By engaging these loop-shaped cloth surface fasteners with the hook-shaped cloth surface fastener, it is used in the clothing field and daily use. It is widely used as a fastener in the fields of miscellaneous goods and industrial materials.

In the case of these cloth surface fasteners, a hook-shaped engaging element or a loop-shaped engaging element is present on the surface of the base cloth so as to cover the entire surface except the ear portion, and the hook-shaped surface fastener engaged with the hook-shaped surface fastener. When the loop-shaped cloth surface fastener is peeled off, it is sufficiently engaged to the end portion, so that there is a problem that it is difficult to grasp and peel off the end portion.

As a hook-and-loop fastener that solves such a problem, for example, in Patent Document 1, in order to make it easier to grasp the end portion when attaching / detaching the face fastener to each other, the surface fastener is provided so as to leave the unengaged end portion. As a conventional technique, a method of mounting the end portion at a position slightly away from the end portion and forming an unengaged end portion as a grip portion has been mentioned.

Further, in the case of the method of forming the grip portion, Patent Document 1 has a new problem that the grip portion is rolled up when the engagement and disengagement are repeated, and a habit is formed in that state, which impairs the appearance. It is described that it occurs, and in order to solve it, the invention of Patent Document 1 proposes an unrealistic means of covering the entire surface fastener with a cloth and concealing it, which is costly and troublesome.

As described in this patent document, when a method of forming a grip portion is used as a method of eliminating the difficulty of peeling the hook-and-loop fastener, the grip portion is rolled up by repeatedly engaging and peeling by grasping the grip portion. It is easy to get a habit of going up, which causes a new problem that it looks bad.

In Patent Document 2, the woven surface fastener small pieces having ears at both ends in the ground weft direction and both ends in the ground warp direction, that is, the four sides around the portion where the engaging element is present are the ears. A piece of hook-and-loop fastener surrounded by is described. Then, FIG. 5 shows a cloth surface fastener in which the small pieces are connected in both directions before cutting into small pieces.

If the surface fastener of FIG. 5 in which these small pieces are connected is used in a state where it is connected as it is without being cut into small pieces, the ground warp direction and the ground weft direction are used at the ears that were not used for cutting. In a space where the engaging element does not exist continuously, that is, the ear part penetrates and exists, foreign matter small pieces and dust enter the space, and then penetrate the same space, and foreign matter small pieces and dust etc. This is a problem in fields such as dust-free clothing and food, which are extremely reluctant to penetrate.

Draft No. 3206311 (paragraphs 0002 and 0003) Japanese Unexamined Patent Publication No. 2016-16200 (Fig. 5)

As described above, the hook-and-loop fastener is easy to peel off if it has a gripping portion, but when the gripping portion is repeatedly engaged and peeled off, it becomes habitual in a rolled-up state, which spoils the appearance of the hook-and-loop fastener. If there is no grip, it will be difficult to peel it off, which is a big problem especially for children, the elderly, and people with physical disabilities.
Normally, the hook-and-loop fastener is fixed to a support typified by the fabric and used. Although the hook-and-loop fastener can be peeled off by pulling the fabric, such a peeling method causes damage to the fabric and is preferable. This is a method of inserting a finger between the engaged hook-and-loop fasteners and peeling them off.

The present invention solves such a problem. It is an object of the present invention to provide a hook-and-loop fastener that can be easily peeled off by inserting a finger between the engaged hook-and-loop fasteners, even though it is difficult to get the habit of.
Further, even if a space into which a finger can be inserted is provided, the hook-and-loop fastener is provided so that foreign matter small pieces and dust do not pass through the hook-and-loop fastener through such a space.

That is, the present invention relates to a cloth surface fastener in which an engaging element formed by projecting the engaging element thread is present on the surface of a base cloth formed of a ground warp, a ground weft and an engaging element thread. In the ground warp and weft directions of the surface, a region (A) in which the engaging element exists and a region (B) in which the engaging element does not exist alternately exist, and the region (A ). ) And the area (B) are rectangular surrounded by sides parallel to the warp and weft direction, and in the case of the area (A), the adjacent area (B) and the area (B). In the case of, each side of the rectangle is shared with the adjacent area (A), and the area (A) and the area (A) adjacent to the area (A) in the diagonal direction are in contact with each other at the vertices of the rectangle. Similarly, with respect to (B), the regions (B) adjacent to each other in the diagonal direction are in contact with each other at the apex, and the ground warp and weft and the thread for the engaging element, which form the base fabric, are all polyalkylene. The yarn is made of terephthalate polyester, the ground weft yarn contains a core-sheath type heat-sealing fiber, and the engagement element yarn is fixed to the base fabric by the heat-sealing fiber. As a result, the back surface of the base fabric does not have an adhesive layer, and the length in the warp and weft direction and the length in the warp and weft direction of the region (B) are both in the range of 4 to 25 mm, and the regions (A) are at the four corners. It is a cloth surface fastener characterized by being cut into small pieces in which the warp and weft is present.

Then, preferably, in such a cloth surface fastener, the area of the region (A) is 40 to 80% of the total area of the region (A) and the region (B) .

Further, preferably, in such a cloth surface fastener, the area of the region (A) is 40 to 80% of the total area of the region (A) and the region (B), and the engaging element is. This is a case where the loop-shaped engaging element is made of a multifilament yarn or the hook-shaped engaging element is made of a monofilament yarn. More preferably, it is a dust-free garment in which the cloth surface fastener is used.

Further, as a method for manufacturing such a cloth surface fastener, the present invention has a cycle in which the reciprocating motion of the heddle frame for forming an engaging element can be manufactured by a normal surface fastener loom with a cycle of the number of threads for driving the ground weft threads. If this is the case, it may be manufactured by a normal hook-and-loop loom, or if the cycle of the number of threads to be driven exceeds the cycle that can be manufactured by a normal hook-and-loop loom, a loop is formed controlled by an electric signal. The woven fabric may be manufactured using the device. Further, when the loop is for a hook-shaped engaging element, a method of cutting one leg of the loop to form a hook-shaped engaging element is used.

As described above, the cloth hook-and-loop fastener of the present invention has a region (A) in which the engaging element exists and a region (B) in which the engaging element does not exist in the ground warp and weft directions on the surface. Are alternately present, and the length in the warp and weft direction and the length in the warp and weft direction of the region (B) are both in the range of 4 to 25 mm, so that the region (A) is locked to the end of the hook-and-loop fastener. Therefore, it is difficult to get a habit of rolling up even if it is repeatedly engaged and disengaged.

Nevertheless, the presence of the unengaged region (B) allows the fingers and the like to be easily inserted between the engaged hook-and-loop fasteners and easily peeled off. Further, due to the existence of the area (B), although the space where the finger can be inserted is provided, the area (A) exists in the back of such a space, so that the space of the area (B) is provided. Small pieces of foreign matter and dust do not enter or pass through the interior of the hook-and-loop fastener.

Further, by providing the region (B), the loop-shaped engaging element or the hook-shaped engaging element existing at the end of the region (A) can be easily engaged with the engaging partner, and the region (B) can be easily engaged. ) Is present, the number of engaging elements of the entire surface fastener is reduced, and the weight of the surface fastener as a whole is reduced.

It should be noted that the fact that the hook-shaped engaging element is easily engaged with the loop-shaped engaging element referred to here means that the measured value of the shearing or peeling strength is converted into the value per engaging element of the hook-and-loop fastener. It means that the value is high. Of course, this value is a comparison with a cloth surface fastener having the same thread structure when manufacturing a surface fastener and having an engaging element on the entire surface, and is used as a hook-shaped engaging element. If the fineness of the monofilament yarn, the total decitex of the multifilament yarn used as the loop-shaped engaging element, the number of filaments, and the like are different, the engaging strength will naturally be different.

It is a perspective view schematically showing a suitable example of the cloth loop surface fastener of this invention. Actually, the number of loop-shaped engaging elements in the region (A) is larger than that in the figure. A cross-sectional view schematically showing an example of an engagement state between the cloth loop surface fastener of FIG. 1 and a commercially available cloth hook surface fastener (a surface fastener in which a hook-shaped engaging element exists on the entire surface). Is. It is sectional drawing which represented typically an example of the state in which the known cloth loop surface fastener which is generally marketed and the known cloth hook surface fastener are engaged.

Hereinafter, the cloth surface fastener of the present invention will be described in detail. In the loop surface fastener which is an example of the cloth surface fastener of the present invention, a large number of loop-shaped engaging elements (2) protrude from the surface of the base cloth (1) on the surface thereof, as shown in FIGS. 1 and 2. There is a region and a non-protruding region. That is, in the cloth-like surface fastener of the present invention, the region (A) in which the loop-shaped engaging element exists and the region (B) in which the engaging element does not exist alternate on the same surface in both the ground warp direction and the ground weft direction. Exists in. As a result, as shown in FIG. 2, when the hook-and-loop fastener is engaged, the area (B) becomes a space where a finger or the like can be inserted, and it becomes easy to peel off.

Furthermore, the loop-shaped engaging element exists up to the four corners of the cloth surface fastener or its vicinity, so that it is locked to the hook surface fastener, or both sides of the space have regions (A) and are fixed. Therefore, even if the engagement and disengagement are repeated, there is no concern that the end portion of the hook-and-loop fastener is greatly rolled up, and the state of excellent appearance can be maintained.
On the other hand, in the case of FIG. 3, since the end face of the hook-and-loop fastener is engaged from end to end and there is no space for inserting a finger or the like, it is difficult to peel it off.

In such a cloth surface fastener, the ground warp yarn, the ground weft yarn, and the loop-shaped engaging element yarn or the hook-shaped engaging element yarn constituting the base cloth are all yarns made of polyester fibers, and the ground weft yarns are heat. When the yarn is made of a fusible fiber and the loop-shaped engaging element thread or the hook-shaped engaging element thread is fixed to the base fabric by the fusion of the heat-sealing fibers, the base cloth is used. Since it is flexible, it is easier to insert a finger into the space portion of the region (B), which is preferable because it is easier to peel off.

In the case of conventional cloth surface fasteners, an adhesive called a backcoat layer is used to prevent the loop-shaped engaging element or hook-shaped engaging element from being pulled out from the base cloth during engagement / peeling. It is applied to the back of the base cloth. Therefore, the entire base cloth is hardened with an adhesive to make it rigid. As described above, when the loop-shaped engaging element thread or the hook-shaped engaging element thread is fixed to the base fabric by the heat-sealing fiber, it is not necessary to form the back coat layer on the back surface. As a result, the base cloth becomes flexible and can be easily peeled off.

In the present invention, it is preferable that the ground warp thread, the ground weft thread, the loop-shaped engaging element thread, and the hook-shaped engaging element thread are all made of polyalkylene terephthalate polyester, and in particular, in terms of heat fusion property. It is preferable that the ground warp and the yarn for the engaging element are formed of a polyethylene terephthalate homopolymer or a polybutylene terephthalate homopolymer in terms of heat fusion property and strength after heat fusion.

The ground warp is preferably a multifilament yarn, and the thickness of the multifilament yarn constituting the ground warp is preferably a multifilament yarn having a total decitex of 16 to 96 filaments of 75 to 250 decitex, particularly 24. A multifilament yarn having a total decitex of 100 to 200 decitex consisting of up to 48 filaments is preferable.

The multifilament yarn is also preferable as the ground weft, and the thickness of the multifilament yarn constituting the ground weft is preferably a multifilament yarn having a total decitex of 60 to 200 decitex consisting of 16 to 50 filaments, particularly 20 to. A multifilament yarn having a total decitex consisting of 40 filaments of 75 to 150 decitex is preferable.

As described above, the ground weft preferably contains heat-fusing fibers in order to eliminate the need for a backcoat layer, and as a specific example of the heat-sealing fibers, the sheath component is heat-fused. A core-sheath type heat-sealing fiber as a coating component is used. Since the ground weft yarn contains the heat-sealing fiber, the loop-shaped engaging element yarn and the hook-shaped engaging element yarn can be firmly fixed to the base fabric.

Instead of using the heat-sealing fiber for the ground warp, it is also possible to fix the loop-shaped engaging element thread or the hook-shaped engaging element thread to the base fabric by using the heat-sealing fiber for the ground warp. Although it is possible, since the thread for the loop-shaped engaging element and the thread for the hook-shaped engaging element are driven into the base cloth in parallel with the ground warp, the ground warp is for the loop-shaped engaging element and the hook-shaped engaging element. The number of intersections with the yarn is extremely smaller than that of the ground weft, and therefore, when the heat-sealing fiber is used only for the ground warp, it is difficult for the loop-shaped engaging element yarn to be firmly fixed to the base fabric. Furthermore, when heat-sealing fibers are used for the ground warp, it is difficult to keep the tension applied to the running base cloth constant in the continuous production of hook-and-loop fasteners, and stable continuous production of hook-and-loop fasteners of constant quality. It tends to be difficult to do.

As the core-sheath type heat-sealing fiber described above, the polyalkylene terephthalate polyester that can melt the sheath component and firmly fix the root of the loop-shaped engaging element thread or the hook-shaped engaging element thread to the base fabric. The core component is made of a high melting point polyester resin that does not melt under heat treatment conditions, and the sheath component is made of a melting low melting point or low softening point polyester resin. Examples include polyester fibers having a mold cross section.

More specifically, a polyethylene terephthalate homopolymer is used as a core component, and a large amount of a copolymerization component typified by isophthalic acid or adipic acid is copolymerized, for example, by copolymerizing 15 to 30 mol% to obtain a melting point or a softening point. A typical example thereof is a polyester fiber having a core-sheath type cross section containing a greatly reduced copolymerized polyethylene terephthalate as a sheath component.

The melting point or softening point of the sheath component is 100 to 200 ° C, and is 20 to 150 ° C lower than the melting point of the ground warp, the core component, the multifilament yarn for the loop-shaped engaging element, and the monofilament yarn for the hook-shaped engaging element. Is preferable. The cross-sectional shape of the core-sheath type heat-sealing fiber may be a concentric core sheath, an eccentric core sheath, a single core core sheath, or a multi-core core sheath.

Furthermore, the proportion of core-sheath type heat-sealing fibers in the fibers constituting the ground weft is particularly high when all of the ground wefts are substantially formed of core-sheath type heat-sealing fibers. When the ground weft is a multifilament yarn made of a core-sheath type heat-sealing filament, the loop-shaped engaging element yarn and the hook-shaped engaging element yarn are firmly fixed to the base fabric. Therefore, it is preferable.

If the fibers that make up the warp and weft are not in the shape of the core-sheath cross section and the entire fiber cross section is made of a heat-sealing polymer, the heat-sealing polymer that has melted and solidified again becomes brittle and fragile. When sewing, etc., the base cloth is likely to tear from the sewing thread portion. Therefore, the heat-sealing fiber preferably contains a resin that is not heat-melted at a temperature at which the sheath component melts continuously in the fiber length direction, and has a cross-sectional shape of the core sheath in terms of heat-sealing property. It means that it is preferable. The weight ratio of the core component to the sheath component is preferably in the range of 20:80 to 80:20, particularly preferably in the range of 25:75 to 75:25.

Since the thread for the loop-shaped engaging element can obtain high peeling strength, it is composed of polyethylene terephthalate-based or polybutylene terephthalate-based polyester, and does not melt at the temperature at which the heat-sealing fibers are heat-fused. Multifilament yarns having a melting point, i.e., non-copolymerized polyethylene terephthalate or polybutylene terephthalate, are preferred. In particular, in the case of a multifilament yarn made of polybutylene terephthalate, the loop-shaped engaging element that is flexible and exists at the end of the region (A) is easily engaged, and further, a finger or the like is sandwiched between the yarns when the yarn is peeled off. Suitable because it is easy to put in.

As the thickness of the multifilament yarn constituting the yarn for the loop-shaped engaging element, the multifilament yarn having a total decitex of 5 to 15 filaments of 150 to 400 decitex is preferable, and particularly from 6 to 9 filaments. A multifilament yarn having a total decitex of 200 to 300 decitex is preferable.

The hook-shaped engaging element is required to have so-called hook shape retention and rigidity in which the hook shape is not extended by a light force. Therefore, it is made of thick polyalkylene terephthalate type, especially polyethylene terephthalate type polyester, especially polyethylene terephthalate homo. A monofilament yarn made of a polymer is preferably used.

The thickness of the monofilament thread for the hook-shaped engaging element is preferably 0.13 to 0.40 mm in diameter, and more preferably 0.14 to 0.35 mm in diameter.

Next, a method for manufacturing a cloth loop surface fastener or a cloth hook surface fastener from the above-mentioned ground warp and weft, multifilament yarn for loop-shaped engaging element, or hook-shaped engaging element monofilament yarn will be described.

First, a woven fabric for a hook-and-loop fastener is woven from the above-mentioned ground warp yarn, ground weft yarn, multifilament yarn for loop-shaped engaging element, or monofilament yarn for hook-shaped engaging element. As the woven structure of the woven fabric, a plain weave in which a multifilament yarn for a loop-shaped engaging element or a monofilament yarn for a hook-shaped engaging element is used as a part of a ground warp is preferable.

Then, while these engaging element threads exist in parallel with the ground warp threads, in the region (A), in the case of the loop hook-and-loop fastener, they float from between the ground warp threads and form a loop without straddling the ground warp threads. In the case of hook-and-loop fasteners, a weaving structure that floats from between the ground wefts and forms a loop while jumping over one to three ground warps and also slips between the ground wefts. Further, in the case of a mixed type hook-and-loop fastener in which a hook-shaped engaging element and a loop-shaped engaging element coexist on the same surface, a woven structure in which both of them satisfy the above-mentioned floating / sinking state is hook-shaped engaging. It is preferable because the side portion of one leg of the loop for the element can be efficiently cut, and the hook-shaped engaging element and the loop-shaped engaging element are easily engaged. Then, in the region (B), the engagement element thread floats and sinks between the ground warp threads in parallel with the ground warp threads without rising from the base cloth surface, and is woven into the base cloth.

The weaving density of the ground warp yarn is 35 to 80 yarns / cm after the heat treatment, particularly 40 to 65 yarns / cm, and the weaving density of the warp and weft yarn is 12 to 30 yarns after the heat treatment. The number of lines / cm, particularly 15 to 25 lines / cm is preferable. The weight ratio of the ground weft is preferably 15 to 40% with respect to the total weight of the loop-shaped engaging element thread or the hook-shaped engaging element thread constituting the woven surface fastener, the ground warp and the ground weft.

Further, in the cloth loop surface fastener or the cloth hook surface fastener of the present invention, the number of the multifilament yarn for the loop-shaped engaging element or the monofilament yarn for the hook-shaped engaging element is 20 for each of the ground warp yarns (loop-shaped engaging element). (Including multifilament yarn for hook-shaped engagement element or monofilament yarn for hook-shaped engaging element), about 2 to 8 threads are preferable.

In the case of a hook / loop mixed type cloth surface fastener, a total of 20 warp yarns (multifilament yarn or hook for loop-shaped engaging element) of multifilament yarn for loop-shaped engaging element and monofilament yarn for hook-shaped engaging element. 3 to 8 yarns are preferable with respect to (including monofilament yarns for shape engaging elements), and the ratio of the number of multifilament yarns for loop-shaped engaging elements to monofilament yarns for hook-shaped engaging elements is 1: 1 to 2: 1. The range of is preferable.

Next, the method for manufacturing the cloth surface fastener of the present invention will be described in detail.
First, in the woven fabric used for the cloth surface fastener of the present invention, a region (A) in which the engaging element exists and a region (B) in which the engaging element does not exist are formed at the stage of weaving the woven fabric. As a specific forming method, a method using a loop forming device in which the reciprocating motion of the heddle frame for forming the engaging element is controlled by an electric signal is preferably used. That is, by controlling the reciprocating motion of the heddle frame by an electric signal, it is possible to manufacture a structure having a period using an extremely large number of ground weft threads.

In a normal hook-and-loop loom, the reciprocating motion of the heddle frame is such that the height of a part generally called a card determines the vertical position of the heddle frame, and the cards are connected in a chain shape and rotated to reciprocate the heddle frame. I'm repeating exercise. However, when the cards are connected in a chain shape, the length must be such that the loom can be built in, so that the cycle of reciprocating motion is physically limited. The control of the length varies depending on the type of loom, but in most cases, the limit is to form a structure in a cycle of up to about 48 threads for driving the ground weft.

Therefore, if the cycle of the number of threads to be driven is a cycle that can be manufactured by a normal hook-and-loop loom, the cycle may be manufactured by a normal hook-and-loop loom, or the cycle of the number of threads to be driven is normal. If the period that can be manufactured by the hook-and-loop loom is exceeded, the woven fabric may be manufactured using a loop forming device in which the reciprocating motion of the heddle frame is controlled by an electric signal. Controlling the reciprocating motion of the heddle frame with an electric signal means replacing the part that connects the cards in a chain with a part that is controlled by the electric signal. That is, there is no limit on the length when the cards are connected in a chain shape, and for example, it is possible to form an organization in which an extremely large number of warp and weft threads of 1,000 or more are driven. When the reciprocating motion of the heddle frame is controlled by an electric signal, the loom raises and lowers the heddle frame by using an electric magnet, a motor, or the like.

For example, in 10 to 50 ground weft threads, the engaging element is present by forming a loop on the base cloth so that the thread for the engaging element forms a loop after floating and sinking a plurality of ground weft threads. A region, that is, an engaging element existing region (A), and in the subsequent 10 to 50 ground weft yarns, the engaging element yarn is woven into the base fabric so as not to form a loop, and the region where the engaging element does not exist. By setting (B), the region (A) in which the engagement element exists and the region (B) in which the loop does not exist are alternately present in the warp and weft direction on the surface of the woven fabric. Will be present in.

Also, in the direction of the ground warp and weft, the engagement element yarn is set as the engagement element existence region (A) by forming a loop after floating and sinking a plurality of ground weft threads for 20 to 120 ground warp threads. In the following 20 to 120 warp and weft threads, the engagement element threads are woven into the base cloth so as not to form a loop, and the region (B) in which the engagement element does not exist is used.

By doing so, the region (A) in which the loop for the engaging element exists and the region (B) in which the loop for the engaging element does not exist alternately exist in the ground warp direction and the ground weft direction. The woven fabric for the cloth surface fastener of the present invention is formed.
In the present invention, in the region (B), the yarn for the engaging element is woven into the base fabric fabric in parallel with the ground warp without forming the engaging element, which is the strength and manufacture of the base fabric. It is preferable in terms of ease of use.

The surface fastener woven fabric thus obtained is then heat-treated to melt only the sheath component of the core-sheath type heat-sealing fiber constituting the weft, and the multifilament yarn or hook for the loop-shaped engaging element is melted. The monofilament yarn for the shape engaging element is firmly fixed to the base fabric. This eliminates the need for the backcoat layer application process that has been performed with conventional hook-and-loop fasteners. The temperature at the time of heat treatment is generally 150 to 220 ° C, which is a temperature at which the sheath component melts or softens but the other threads and core components do not melt, and more preferably in the range of 180 to 210 ° C. More preferably, it is in the range of 190 to 205 ° C. In particular, in the case of a multifilament yarn for a loop-shaped engaging element, a temperature of 205 ° C. or lower is preferable in relation to its melting point.

When the engaging element is a hook-shaped engaging element, one leg of the fixed loop for the engaging element is cut to change the loop shape to the hook shape. By the above method, the cloth surface fastener of the present invention can be obtained. The obtained cloth surface fastener may be dyed if necessary, but at that time, by dyeing the engaging element and the base cloth so as to have different color tones, the color tones of the region (A) and the region (B) are obtained. It is possible to increase the value of the hook-and-loop fastener by the beautiful pattern woven by the regions (A) and the regions (B) that exist alternately.

In the present invention as described above, it is necessary that both the length in the warp and weft direction and the length in the warp and weft direction of the region (B) are in the range of 4 to 25 mm, and when the region (B) is less than 4 mm, the region (B) is set. If it is not worth existing and exceeds 25 mm, the engaging force of the hook-and-loop fastener will decrease, and depending on the size of the hook-and-loop fastener piece to be cut out, it may not be used as a hook-and-loop fastener, or dust from the space of the area (B), etc. It may not be possible to prevent the invasion of. It is preferably in the range of 5 to 20 mm, more preferably in the range of 6 to 12 mm. In the present invention, it is not necessary that all the regions (B) have the same length in the ground warp direction and the ground weft direction, and there are a plurality of regions (B) having different shapes and areas. May be good.

In addition, if either the ground warp direction or the ground weft direction of the region (B) deviates from the range of 4 to 25 mm, it may be difficult to insert a finger depending on the mounting direction of the hook-and-loop fastener, or engagement / peeling may be repeated. This causes problems such as the end being rolled up, and the surface shape of the obtained hook-and-loop fastener is aesthetically inferior.

Further, the length in the ground warp direction and the length in the ground weft direction of the region (A) are preferably in the range of 4 to 25 mm as in the region (B). If it is less than 4 mm, the effect of the present invention is reduced, and if it exceeds 25 mm, it becomes difficult to find a place to insert a finger. The length in the warp and weft direction and the length in the warp and weft direction of the region (A) and the region (B) do not have to be the same, and the length may be changed between the region (A) and the region (B). can. Further, it is not necessary that all the regions (A) have the same length in the ground warp direction and the ground weft direction, and a plurality of regions (A) having different areas may exist.

In the present invention, it is preferable that the area of the region (A) is 40 to 80% of the total area of the region (A) and the region (B) in order to satisfy both the engaging force and the ease of inserting a finger. However, it is more preferably in the range of 60 to 80% in terms of further maintaining the engaging force required for the hook-and-loop fastener, and more preferably in the range of 40 to 60% in terms of making it easier to insert a finger or the like. .. The area ratio of the area (A) may be selected depending on which is more important.

In particular, in the cloth hook-and-loop fastener of the present invention, the region shapes of the regions (A) and the regions (B) are rectangles surrounded by sides parallel to the ground warp and ground weft directions, and in the case of the region (A). The adjacent area (B) and, in the case of the area (B), each side of the rectangle are shared with the adjacent area (A), and the area (A) and the area (A) adjacent to the area (A) in the diagonal direction are shared. ) Is in contact with each other at the vertices of the rectangle, and the area (B) is also the area (A) and the area (B) in which the vertices are in contact with each other in the diagonally adjacent area (B). It is preferable to have an arrangement in terms of ease of manufacture, strength of the hook-and-loop fastener, and in terms of preventing dust and the like from entering from the area (B) space.

It should be noted that each side of the rectangle referred to here does not include the side on the end side when the area (A) or the area (B) exists at the end of the hook-and-loop fastener. Further, the cloth surface fastener of the present invention may have an ear portion in which an engaging element does not exist around the cloth surface fastener. The width of the ear is about 1 to 4 mm. This selvage is not included in the region (B) referred to in the present invention.

The cloth hook-and-loop fastener of the present invention is manufactured as a long object continuous in the warp direction, but when used, it is cut to an appropriate width and length. After cutting, the total number of regions (A) and regions (B) in the warp and weft direction is preferably 5 to 31. That is, it is preferable that the regions (A) and the regions (B) alternately exist in the ground weft direction in a total of 5 to 31 regions. More preferably, the number is 5 to 15. The total number of regions (A) and regions (B) in the warp direction is preferably 5 to 61, more preferably 7 to 31. Then, it is preferable that the cloth surface fastener after cutting is cut at a place where the regions (A) exist at the four corners thereof.

In particular, in the cloth surface fastener of the present invention, the regions (A) and the regions (B) have the same length and alternately exist in the ground warp direction, and also have the same length in the ground warp direction (in the ground warp direction). When the area (A) and the area (B) are repeated alternately in (it does not have to be the same as the length), it is more beautiful because it is easy to cut into small pieces so that the area (A) always exists at the end. It is also visually excellent because a checkered pattern is formed.

In the cloth surface fastener of the present invention, the number of engaging elements existing in the region (A) is preferably 20 to 80 / cm ² and more preferably 25 to 60 / cm 2 based on the area of the region (A). It is in the range of cm ² , more preferably 30 to 50 lines / cm ² . Then, it is preferable that the engaging elements are uniformly distributed and exist in the region (A) over the entire region (A).

The cloth surface fastener of the present invention is a loop surface fastener having only a loop-shaped engaging element on the surface of the base cloth, or a hook surface fastener having only a hook-shaped engaging element. Alternatively, it may be either a hook-loop mixed type hook-and-loop fastener having both a loop-shaped engaging element and a hook-shaped engaging element.

Further, the cloth hook-and-loop fastener of the present invention may have an engaging element on only one side of the base cloth, or may have the same engaging element on both sides of the base cloth. Or even if it has a loop-shaped engaging element on one of the front and back surfaces of the base fabric and a hook-shaped engaging element on the other surface, or with the surface of the base cloth. It may have both a loop-shaped engaging element and a hook-shaped engaging element on both sides of the back surface.

When the base fabric has engaging elements on both the front and back surfaces, the regions (A) and the regions (B) are alternately present in the ground warp and weft directions on only one side as in the present invention. Alternatively, the regions (A) and the regions (B) may be alternately present in the warp and weft directions on both sides.

When the region (A) and the region (B) are present on both sides, the back surface of the portion where the region (A) is present on the front surface is the region (B), and the front surface is covered with the region (B). It is preferable from the viewpoint of ease of manufacture that the back surface of the portion where the region (B) exists is the region (A).

When the cloth surface fastener of the present invention is used, the surface fastener of the engaging partner may be a conventional ordinary surface fastener having an engaging element on the entire surface, or the area (A) and the area (A) of the present invention. A hook-and-loop fastener having B) alternately in the warp and weft directions may be used, both of which are excellent in terms of ease of peeling.

The cloth surface fastener of the present invention is provided with an engaging element of the surface fastener up to the end, and since the surface fasteners are engaged with each other up to the end, the end may be rolled up even if the engagement and peeling are repeated. do not have.

Hereinafter, the present invention will be described with reference to examples. The engagement strength (shear strength and peel strength) in the examples was measured according to JIS L3416 with a hook-and-loop fastener width of 100 mm and 10 samples. At that time, when the engaging partner is a hook-and-loop fastener, Kuraray Fastening's hook-and-loop fastener A9863Y. 00 was used, and when the engagement partner was a loop hook-and-loop fastener, a loop hook-and-loop fastener B2790Y manufactured by Kuraray Fastening Co., Ltd., which is widely marketed as a loop hook-and-loop fastener, was used.
In addition, eight men and women conducted a test to determine whether it is easy to peel off by inserting a finger between the double-sided fasteners with the ends aligned with the above-mentioned engagement partner. , The results were comprehensively evaluated.

Example 1
The following threads were prepared as ground warp threads, ground weft threads, and multifilament threads for loop-shaped engaging elements that constitute the base fabric of the loop hook-and-loop fastener.
[Ground warp]
-Multifilament yarn made of polyethylene terephthalate with a melting point of 260 ° C.-Total decitex and number of filaments: 30 at 167 dtex [Ground weft (heat-fused multifilament yarn made of core-sheath type composite fiber)]
-Core component: Polyethylene terephthalate (melting point: 260 ° C)
-Sheath component: 25 mol% isophthalic acid copolymerized polyethylene terephthalate
(Softening point: 190 ° C)
・ Core-sheath ratio (weight ratio): 70:30
-Total decitex and number of filaments: 24 at 99dtex [multifilament yarn for loop-shaped engaging element]
-Polybutylene terephthalate fiber (melting point: 220 ° C)
・ Total decitex and number of filaments: 7 at 265 dtex

Using the above three types of threads, a loop surface fastener was manufactured under the following conditions using a device in which the reciprocating motion of the heddle frame forming the loop-shaped engaging element is controlled by an electric signal as a weaving device.

A plain weave was used as the weaving structure, and the weave was woven so that the weaving density (after heat treatment) was 50 ground warp threads / cm and 20 ground weft threads / cm. Then, the multifilament yarn for the loop-shaped engaging element was driven in parallel to the ground warp yarn at a ratio of 1 in 8 ground warp yarns without straddling the ground warp yarn. Then, in the area (A) for 16 warp and wefts, a loop is formed on the base cloth so as to form a loop after the three warp and wefts are ups and downs, and the area (B) for 16 subsequent warp and wefts is formed. ), That is, a woven structure in which two regions are alternately present, that is, 16 ground wefts have a loop and the following 16 ground wefts do not have a loop. In the region (A), the position of floating from the ground weft was changed between the adjacent multifilament threads for the loop-shaped engaging element so that the positions where the loops were formed were scattered in the direction of the ground warp.

Then, a region (A) in which a loop exists and a region (B) in which a loop does not exist are alternately formed in every 36 ground warp threads. The obtained woven fabric for loop surface fastener was heat-treated at 195 ° C. to melt the sheath component of the ground weft yarn, and the loop-shaped engagement element yarn was fixed to the base fabric.

When the obtained cloth loop surface fastener is observed from a bird's-eye view, the region (A) in which the engaging element exists and the region (B) in which the engaging element does not exist alternate in the ground warp direction and the ground weft direction. It existed. The obtained cloth loop surface fastener is a rectangle in which the region shapes of the region (A) and the region (B) are surrounded by sides parallel to the ground warp and ground weft directions, and the region (A) has a rectangular shape. In some cases, it shares each side of the rectangle with the adjacent area (B), and in the case of the area (B), it shares each side of the rectangle, and is adjacent to the area (A) in the diagonal direction. The area (A) is in contact with the rectangular vertices, and the area (B) is also in contact with the diagonally adjacent area (B) with the vertices, which is beautiful and regular like a checkered pattern. It had a pattern that repeated.

The area (A) and the area (B) of the obtained cloth loop surface fastener are both 8 mm in the warp and weft direction and 6 mm in the warp and weft direction, and the area of the area (A) is the area (A). And 50% of the total area of the area (B). The height of the loop-shaped engaging element was 2.5 mm, and the density of the loop-shaped engaging element in the region (A) was 39 lines / cm ² based on the area of the region (A). From the obtained loop hook-and-loop fastener, a length of 120 mm in the ground warp direction and a length of 100 mm in the ground weft direction were cut out so that the regions (A) came to the four corners.

The loop surface fastener piece thus obtained was engaged with the hook surface fastener A9863Y-00 manufactured by Kuraray Fastening Co., Ltd., and the shear strength and peeling strength were measured. As a result, the shear strength was 0.364N per loop-shaped engaging element, and the peeling strength was 0.036N per loop-shaped engaging element.
The engaged hook-and-loop fasteners are engaged to the four corners, but a space created by the region (B) is formed at a plurality of places at the intermediate end, and this space is a trigger for inserting a finger or the like and peeling it off. It was extremely easy to peel off. Further, engagement and disengagement were repeated 400 times, but no habit of rolling up the end was observed. Further, air containing fine fibrous powder was blown from the space of the end region (B), but was blocked by the engaging element group of the region (A) existing in the back of the space, and was fine fibrous. The powder did not penetrate to the opposite side of the loop hook-and-loop fastener.

Examples 2 and 3 and Comparative Examples 1 and 2
In the first embodiment, the number of ground wefts in the region to be formed is 16 to 10 (Example 2), 40 (Example 3), 6 (comparative example 1), and 66 (comparative example 1). A checkered cloth loop surface fastener in the same manner as in Example 1 except that the lengths of the regions (A) and the regions (B) in the warp and weft direction are changed as shown in Table 1 by changing from Comparative Example 2), respectively. Was produced. The lengths of the region (A) and the region (B) in the warp and weft direction are both 6 mm.

When the surfaces of all of these four types of loop surface fasteners obtained were observed, the region shapes of the regions (A) and the regions (B) were in the ground warp direction and the ground weft direction, as in the case of the first embodiment. It is a rectangle surrounded by sides parallel to each other, and in the case of the area (A), the adjacent area (B), and in the case of the area (B), the adjacent area (A) and each side of the rectangle. The area (A) that is shared and the area (A) that is adjacent to the area (A) in the diagonal direction is in contact with each other at the vertices of the rectangle, and the area (B) is also adjacent to the area (B) in the diagonal direction. B) and the vertices were in contact with each other.
However, the loop hook-and-loop fastener of Comparative Example 1 had a checkered pattern that was too fine to be recognized as a checkered pattern, whereas the loop surface fasteners of Examples 1 and 2 and Comparative Example 2 were beautifully recognized as having a regular checkered pattern. It was possible and was aesthetically pleasing as in Example 1.

Then, the shear strength and the peel strength of these four types of loop surface fasteners obtained were measured. The results are shown in Table 1. In addition, with respect to the obtained four types of loop hook-and-loop fasteners, a finger was inserted between them to observe whether or not they were easily peeled off. Furthermore, the finger was inserted between the double-sided fasteners and engaged and peeled repeatedly, and it was also observed whether or not the place where the finger was inserted was rolled up. The above results are shown in Table 1.

As is clear from Table 1, when the length of the region (B) in the warp direction is out of the range specified in the present invention, it is difficult to insert a finger at the time of peeling, or a finger is inserted. By repeating engagement and disengagement, the inserted part was rolled up and the appearance was inferior. Further, with respect to the loop surface fasteners of these Examples and Comparative Examples, air containing fine fibrous powder was blown from the space of the end region (B), but the region where all the loop surface fasteners exist in the back of the space. Blocked by the engaging element group of (A), the fine fibrous powder did not pass through the space of the loop hook-and-loop fastener and penetrate to the opposite side surface.

Example 4
In the first embodiment, the multifilament yarn for the loop-shaped engaging element is changed to the following monofilament yarn for the hook-shaped engaging element, and the monofilament for the hook-shaped engaging element is changed to the ground warp at a ratio of 1 in 8 ground warps. Same as in Example 1 except that the three ground weft threads are driven in parallel to the fabric, and then the three ground warp threads are straddled, and the loops are formed at the straddling points to form a loop on the base cloth. A woven fabric for hook-and-loop fastener was produced under the conditions.
[Monofilament thread for hook-shaped engaging element]
-Polyethylene terephthalate fiber (melting point: 260 ° C)
-Fineness: 390 dtex (diameter: 0.19 mm)

At that time, in the area (A) for 18 warp and wefts, a loop is formed on the base cloth so as to form a loop after the three warp and wefts are ups and downs, and the area for 18 warp and wefts following the loop (A). In B), no loop was formed, that is, 18 ground wefts had loops, and the following 18 ground wefts had a woven structure without loops.

Then, for each 44 ground warp threads, a region (A) in which the engaging element exists and a region (B) in which the engaging element does not exist are formed in a cycle opposite to the cycle described above. The obtained woven fabric for hook-and-loop fastener was heat-treated at 195 ° C. to melt the sheath component of the ground weft yarn, and the yarn for the hook-shaped engaging element was fixed to the base fabric. Then, one leg of the loop for the hook-shaped engaging element of the obtained woven fabric for hook-and-loop fastener was cut with a clipper to obtain a hook-shaped engaging element.

In this hook surface fastener, a region (A) in which the hook-shaped engaging element exists and a region (B) in which the engaging element does not exist alternately exist in the ground warp and ground weft directions. A rectangle (to be exact, a hook-shaped engaging element is formed) in which the region shapes of the regions (A) and the regions (B) are surrounded by sides parallel to the warp and weft directions. Since it straddles the warp threads, a slight deviation occurs from the parallel side, but in the present invention, this deviation is also referred to as a parallel side), and in the case of the region (A), it is adjacent. The area (B) and, in the case of the area (B), the adjacent area (A) and each side of the rectangle are shared, and the area (A) and the area (A) adjacent to the area (A) in the diagonal direction are used. Is in contact with the vertices of the rectangle, and the region (B) is also in contact with the diagonally adjacent region (B) and the vertices. It had a repeating surface pattern.

The area (A) and the area (B) of the cloth hook-and-loop fastener thus obtained are both 9 mm in length in the warp and weft direction and 8 mm in both directions in the warp and weft, and the area of the area (A) is large. It was 50% of the total area of the area (A) and the area (B). The height of the hook-shaped engaging element from the base cloth surface was 1.7 mm, and the density of the hook-shaped engaging element in the region (A) was 39 lines / cm ² based on the area of the region (A). From the obtained hook-and-loop fastener, a length of 120 mm in the warp direction and a length of 100 mm in the ground-weft direction were cut out so that the regions (A) came to the four corners.

The hook surface fastener piece thus obtained was engaged with the loop surface fastener B2790Y manufactured by Kuraray Fastening Co., Ltd., and the shear strength and the peel strength were measured. As a result, the shear strength per hook-shaped engaging element was 0.362N, and the peeling strength per hook-shaped engaging element was 0.018N. The value of the shearing strength and the value of the peeling strength are the same hook-shaped engaging element on the entire surface of the base cloth, and the hook-shaped engaging element density is 46 lines / cm ² , which will be described later in Comparative Example 6. The value was 10% or more higher than that of the hook hook-and-loop fastener.

The engaged hook-and-loop fasteners are engaged to the four corners, but a plurality of spaces due to the region (B) are formed at the intermediate end, and these spaces serve as a trigger for inserting a finger or the like and peeling off. It was extremely easy to peel off. Further, engagement and disengagement were repeated 400 times, but no habit of rolling up the end where the finger was inserted was observed. Further, air containing fine fibrous powder was blown from the space of the end region (B), but was blocked by the engaging element group of the region (A) existing in the back of the space, and was fine fibrous. It was found that the powder hardly penetrates through the space to the side surface on the opposite side of the hook-and-loop fastener, and is suitable for applications where dust does not like to penetrate.

Examples 5 and 6 and Comparative Examples 3 and 4
In Example 4, the number of ground wefts in the area to be formed is 18 to 12 (Example 5), 36 (Example 6), 4 (comparative example 3), 68 (comparative example). A checkered cloth hook-and-loop fastener was produced in the same manner as in Example 4 except that the lengths of the regions (A) and the regions (B) in the warp and weft direction were changed as shown in Table 2 by changing them to 4). did. The lengths of the region (A) and the region (B) in the warp and weft direction are both 8 mm.

When the obtained hook-and-loop fastener was observed from the surface, it had a checkered pattern with regions (A) and regions (B) similar to those of Example 4. However, the hook-and-loop fastener of Comparative Example 3 had a checkered pattern that was too fine to be recognized as a checkered pattern, whereas those of Examples 5 and 6 and Comparative Example 4 could be clearly recognized as a checkered pattern. ..

Then, the shear strength and the peel strength of these four types of hook-and-loop fasteners obtained were measured. The results are shown in Table 2. Whether or not the four types of hook-and-loop fasteners obtained can be easily peeled off by engaging with the loop-side fastener (loop surface fastener B2790Y manufactured by Kuraray Fastening Co., Ltd.) with their ends aligned and inserting a finger between them. Was observed. Further, the finger was inserted into the space portion formed by the region (B) between the two hook-and-loop fasteners engaged with the finger, and the engagement and disengagement were repeated, and it was also observed whether or not the portion where the finger was inserted was rolled up. The above results are shown in Table 2.

As is clear from Table 2, when the length in the ground warp direction of the region (B) is within the range specified in the present invention, it is easy to insert a finger into the space and peel it off, and the engagement is formed. Even if the peeling was repeated, the inserted portion did not have a habit of rolling up, but when the length of the region (B) in the direction of the ground warp was out of the range specified in the present invention, the space portion was formed during the peeling. It was difficult to insert a finger into the space, or the inserted part was rolled up and the appearance was inferior due to repeated engagement and disengagement by inserting the finger.

Comparative Example 5
In the first embodiment, a loop hook-and-loop fastener having the entire surface covered with a loop-shaped engaging element was manufactured without forming a region (B) in which the engaging element does not exist. It is the same loop-shaped engaging element on the entire surface of the base cloth, and the multifilament yarn for the loop-shaped engaging element is driven in parallel to the ground warp without straddling the ground warp at a ratio of 1 in 4 ground warps. The loop hook-and-loop fastener has a loop-shaped engaging element density of 42 lines / cm ² .

The loop surface fastener having the loop-shaped engaging element on the entire surface thus obtained was engaged with A9863Y-00 manufactured by Kuraray Fastening Co., Ltd., and the shear strength and the peeling strength were measured. The shear strength was 0.305N per loop-shaped engaging element, and the peeling strength was 0.028N per loop-shaped engaging element. Further, the engaged hook-and-loop fasteners are firmly engaged with each other to the end and every corner, and it is difficult to insert a finger between them, and it is difficult to create a trigger for peeling and it is difficult to peel off. Further, the weight of the loop surface fastener was also about 20% heavier than that of the loop surface fastener of Example 1.

Comparative Example 6
In the fourth embodiment, a hook-and-loop fastener whose entire surface is covered with a hook-shaped engaging element is manufactured without forming a region (B) in which the engaging element does not exist. It is the same hook-shaped engaging element on the entire surface of the base cloth, and one monofilament yarn for the hook-shaped engaging element is driven in parallel to the ground warp at a ratio of one to four ground warps, and five ground warps are floated and sunk. It is a hook-and-loop fastener that straddles three ground warps later and has a hook-shaped engaging element density of 41 threads / cm ² .

The hook surface fastener thus obtained was engaged with the loop surface fastener B2790Y manufactured by Kuraray Fastening Co., Ltd., and the shear strength and the peel strength were measured. The shear strength was 0.316N per hook-shaped engaging element, and the peeling strength was 0.014N per hook-shaped engaging element. Further, the engaged hook-and-loop fasteners are firmly engaged with each other up to the end and every corner, and it is difficult to insert a finger between them, and it is difficult to create a trigger for peeling and it is difficult to peel off. The weight of the hook-and-loop fastener was also about 20% heavier than that of the hook-and-loop fastener of Example 4.

Comparative Example 7
In Comparative Example 5 above, the loop-shaped multifilament yarn for the engaging element is formed with a loop for the engaging element for 16 threads in the warp and weft direction, and the loop for the engaging element is not formed for the following 16 threads. In the weft direction, weave so that this state continues from end to end, and the region (A) where the engaging element exists only in the ground warp direction and the region (B) where the engaging element does not exist. The loop surface fastener was produced in the same manner as in Comparative Example 5 except that the regions (A) and the regions (B) were continuous from end to end in the ground weft direction. The widths of the regions (A) and the regions (B) in the warp direction are both 8 mm.

If the end of the small piece cut from this loop hook-and-loop fastener is not in the region (B) where the engaging element does not exist, it is difficult to insert a finger from the end and peel it off, and the engaging element is present. When the non-existing area (B) was the end portion, the habit of rolling up was obtained by inserting a finger and repeating peeling and engaging 50 times.
Further, even when the region (A) in which the engaging element exists and the region (B) in which the engaging element does not exist alternately exist at the end portion, from the space of the end region (B), As in the case of Example 1, when air containing the fine fibrous powder was blown, the fine fibrous powder passed through the space portion of the loop hook-and-loop fastener region (B) and penetrated to the opposite side surface. Was observed, and the effect of blocking dust and the like was inferior.

As can be seen from the results of all the above examples and comparative examples, the cloth surface fastener of the present invention has a high engagement strength value per engaging element even though the thread configuration is the same, and the engaging element. Was easy to get caught in the engaging element of the other party. Further, the weight of the hook-and-loop fastener is also reduced in that of the present invention, and it is suitable for the fields of automobiles and aircraft and the field of sporting goods where light weight is strongly required. Further, when the loop-shaped engaging element and the hook-shaped engaging element are engaged, there is a space at the end where a finger or the like can be inserted, so that the loop-shaped engaging element can be easily peeled off. Further, since the engaging elements are present at the four corners and the ends of the cloth hook-and-loop fastener and there are a plurality of regions (B) at the ends where the engaging elements are not present, a finger is inserted and peeled off. Despite the fact that it is easy to do, there is almost no problem that the end of the cloth hook-and-loop fastener rolls up as the engagement and peeling are repeated, and when viewed from the top, the engagement element surface is a regular checkered pattern. It forms a pattern, and this pattern is beautiful and aesthetically pleasing. Further, it is also excellent in the effect of shielding dust and the like.

The cloth surface fastener of the present invention is suitably used in the fields of clothes such as dust-free clothes, other clothes and hats, footwear and footwear covers, daily miscellaneous goods, supporters, etc., and further, automobiles and building materials. , As a fixing member in the fields of civil engineering, agricultural and fishery materials, etc., or as a binding member.
Further, since the cloth surface fastener of the present invention has a beautiful checkered pattern, it can be used not only as a fastener but also as an accessory in the fields of clothing and daily miscellaneous goods where fashionability is required.

1: Base cloth 2: Loop-shaped engaging element 3: Region (A)
4: Area (B)
5: Hook-shaped engaging element 6: Locked state

Claims (4)

In a cloth surface fastener in which an engaging element formed by projecting the engaging element thread is present on the surface of a base cloth formed of a ground warp, a ground weft and an engaging element thread, the ground warp and weft on the surface thereof. In the direction and the warp and weft direction, a region (A) in which the engaging element is present and a region (B) in which the engaging element is not present alternately exist, and the region (A) and the region (B ) are present. ) Is a rectangle surrounded by sides parallel to the warp and weft direction, and is adjacent to the adjacent area (B) in the case of the area (A) and adjacent to the area (B) in the case of the area (B). Each side of the rectangle is shared with the area (A) of the above, and the area (A) and the area (A) adjacent to the area (A) in the diagonal direction are in contact with each other at the vertices of the rectangle. Similarly, the regions (B) adjacent to each other in the diagonal direction are in contact with each other at the apex, and the ground warp and weft and the thread for the engaging element forming the base fabric are all formed of polyalkylene terephthalate polyester. The back surface of the base fabric is formed by the fact that the ground weft yarn contains a core-sheath type heat-sealing fiber and the engagement element yarn is fixed to the base fabric by the heat-sealing fiber. Does not have an adhesive layer, and both the length in the warp and weft direction and the length in the warp and weft direction of the region (B) are in the range of 4 to 25 mm, and the regions (A) exist at the four corners. A cloth surface fastener characterized by being cut into small pieces . The cloth surface fastener according to claim 1, wherein the area of the area (A) is 40 to 80% of the total area of the area (A) and the area (B). The cloth surface fastener according to claim 1 or 2, wherein the engaging element is a loop-shaped engaging element made of a multifilament thread or a hook-shaped engaging element made of a monofilament thread. A dust-free garment using the cloth surface fastener according to any one of claims 1 to 3.

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