JP6880490B2 - Loop hook-and-loop fastener with excellent split reduction - Google Patents

Description

INDUSTRIAL APPLICABILITY According to the present invention, when an interior member or the like attached with a hook-and-loop fastener is peeled off from the attachment surface, the attached interior member or the like can be removed without cracking, tearing or breaking. Regarding fasteners.
More specifically, when the hook hook-and-loop fastener and the loop hook-and-loop fastener are overlapped and engaged with each other, the peeling strength in the vertical direction exhibits high engaging strength, but the peeling in the split direction can be easily performed. , When peeling the interior material such as ceiling material, wall material, floor material, etc. attached to the ceiling, wall surface, floor surface, etc. using such a hook-and-loop fastener from the mounting surface, the interior material in terms of the engaging force of the surface fastener The present invention relates to a loop hook-and-loop fastener having excellent split reduction property, which allows the interior material to be easily peeled off without cracking, tearing or breaking.

Conventionally, as one of the means for attaching an object to the surface of an object, a hook-and-loop fastener having a hook-shaped engaging element on the surface is attached to one of the surfaces of the object and the object, and the other surface is covered with a hook-and-loop fastener. A method is used in which a loop hook-and-loop fastener having a loop-shaped engaging element on the surface is attached, and the hook-shaped engaging element and the loop-shaped engaging element are engaged with each other by superimposing the two, and the object is attached to the surface of the object. Has been done.

Recently, such hooks have been used as a means for attaching a ceiling material to the ceiling of an automobile body, a decorative plate or the like on the surface of a trunk room of an automobile, or as a means for attaching a ceiling material or a wall material of a house to a structural material of a house. A method using a combination of a hook-and-loop fastener and a loop hook-and-loop fastener is widely and generally used.

As a work when attaching a ceiling material or a decorative board to the surface of a car body by such a hook-and-loop fastener, or attaching a ceiling material or a wall material to a structural material of a house, first, the ceiling material or the decorative board is placed in a predetermined correct position. In order to confirm whether or not it will be attached, it is called alignment, and the ceiling material, veneer or wall with the other hook-and-loop fastener attached to the surface of the car body or structural material with the other hook-and-loop fastener attached. A method is used in which materials and the like are brought close to each other and easily engaged with each other for alignment.

However, at that time, if the position is deviated from the specified position, it is necessary to temporarily disengage and re-fix the ceiling material, decorative board, wall material, etc. to the correct position, and the hook-and-loop fastener is used. If the resultant force is high, the ceiling material, the decorative board, the wall material, and the like may be cracked, torn, broken, or otherwise damaged when the engagement is disengaged.
On the other hand, in order to fix the ceiling material, decorative board, wall material, etc. to the structural material of the car body or house, a high engaging force is required, and if the engaging force is low, it may fall naturally due to vibration or the like. Or, it will come off with some beat.

Therefore, the hook-and-loop fastener used to attach the ceiling material or decorative board to the surface of the car body, or to attach the ceiling material or wall material to the structural material of the house has a high engaging force, and when the engagement is released, the ceiling is used. It is required that the material, the decorative board, the wall material, etc. are not damaged, that is, they are easily peeled off.

In particular, if the material to be attached, such as the ceiling material or decorative board of an automobile, or the ceiling material or wall material of a house, has a large area, prevent the ceiling material or decorative board from breaking or bending when peeling off. In order to achieve this, the peeling work requires careful attention, and the peeling work requires a great deal of labor and time. Moreover, in the case of automobile assembly work, in the middle of the assembly line that flows at a constant speed, there is a new work that requires time and effort to peel off and reattach, so in some cases the assembly line is temporarily stopped. There will be a need and productivity will be greatly reduced.

Therefore, when engagement occurs during alignment, it is necessary that the work of disengaging the engagement and realigning can be performed promptly without damaging the mounting material.

As a loop hook-and-loop fastener that is unlikely to cause unnecessary engagement during such alignment, a multifilament made of a thick filament is used for the loop-shaped engaging element, and the element density of such a loop-shaped engaging element is increased. Further, it is known that such loop-shaped engaging elements are arranged so as to face in a specific same direction (Patent Document 1).

Certainly, with this loop hook-and-loop fastener, it is difficult for engagement to occur even if it is lightly overlapped, and alignment is possible, but if the attachment is large, it is light and accurate with uniform force. It is difficult to superimpose on the ceiling material, and excessive force is likely to be applied partially, resulting in strong engagement. When such engagement occurs, the ceiling material, wall material, etc. will not be damaged when peeled off. It is necessary to carefully peel it off with time and effort.

Also, regarding the hook-and-loop fasteners used for clothing, supporters, daily miscellaneous goods, medical products, etc., first overlap the end of the other hook-and-loop fastener with one of the hook-and-loop fasteners and confirm that they are overlapped in the correct position. In many cases, a method is used in which both fasteners are strongly pressed to engage with each other, and if the ends are not overlapped in the correct position, the ends are engaged. The method of peeling off and realigning is used.

Therefore, even in such a case, the engagement of the end portion is a light engagement that can be easily peeled off, and it is caused by pressing strongly after confirming that the engagement is in the correct position. It is preferable that the engagement is strong in terms of workability.

Although it relates to a hook-and-loop fastener that is not related to such a problem, the element density of the hook-shaped engaging elements existing on both sides of the hook-and-loop fastener is increased, and the height of the hook-shaped engaging element is centered. A hook-and-loop fastener that is higher than the hook-shaped engaging element existing in the portion is known (Patent Document 2).

However, the hook-and-loop fasteners described in this document increase the density of engaging elements on both sides so that the resin liquid does not penetrate to the hook-shaped engaging element surface of the hook-and-loop fastener during mold-in molding, and further. The height of the engaging elements on both sides is increased so that the hook-shaped engaging element existing in the center of the hook-and-loop fastener is not pushed down during mold-in molding, and it is used for mold-in molding. It is not a reference of the present invention for a loop hook-and-loop fastener without a hook-and-loop fastener, and does not suggest a problem of the present invention to solve a problem when the engagement is disengaged after being engaged.

WO 2013/088649 (Claim 1 and paragraphs 0002-0005) Registered Utility Model No. 3181929 (Claims 1 and 0013)

Despite being a loop surface fastener with high engaging force, the present inventors can quickly remove the loop surface fastener or hook surface without damaging the mounting material or the like when disengaging the engagement. A loop surface that can be easily peeled off by just bringing it closer to the fastener, with only light engagement occurring, and strong engagement will occur by strongly overlapping after confirming that they are overlapped in the correct position. To provide fasteners.

More specifically, in the present invention, when engaged with the hook-and-loop fastener, although the peeling strength in the vertical direction is high, the peeling strength in the split direction is lowered to strongly press the fastener. A loop hook-and-loop fastener that can be easily removed even when engaged, or a hook-and-loop fastener that can be easily peeled off with only light engagement by simply bringing the hook-and-loop fastener lightly close to each other, and is superposed in the correct position. A loop hook-and-loop fastener in which strong engagement occurs only when it is strongly pressed in a state where it can be confirmed that the hook-and-loop fastener is used. The purpose is to provide.

That is, according to the present invention, in a loop hook-and-loop fastener in which a large number of loop-shaped engaging elements made of multifilaments are present on the surface of the base fabric, the region (1) and the region (1) and the region ( 2) coexist, and the density of the loop-shaped engaging element existing in the region (1) is lower than the density of the loop-shaped engaging element existing in the region (2) and / or the region (1). The loop hook-and-loop fastener is characterized in that the height of the loop-shaped engaging element existing in is lower than the height of the loop-shaped element existing in the region (2).

Then, in such a loop hook-and-loop fastener, it is preferable that the region (1) is an end portion, and more preferably, the region (1) exists on both sides of the region (2). This is the case, and more preferably, the region (1) surrounds the region (2). Further, in the loop surface fastener, the area of the area (2) is preferably 52 to 90% of the total area of the area (1) and the area (2).

Further, in such a loop hook-and-loop fastener, preferably, the density of the loop-shaped engaging element in the region (2) is 30 to 90 pieces / cm ² higher than the density of the loop-shaped engaging element in the region (1). This is a case where the height of the loop-shaped engaging element existing in (2) is 0.2 to 1.4 mm higher than the height of the loop-shaped engaging element existing in the region (1).

Furthermore, preferably, in the above-mentioned loop surface fastener, both the warp yarn and the loop-shaped engaging element yarn constituting the base fabric are yarns made of polyester fibers, and the weft yarns are made of polyester-based heat-sealing fibers. This is a case where the loop-shaped engaging element thread is fixed to the base fabric by melting the heat-sealing fibers.

As described above, the loop surface fastener of the present invention has a loop-shaped engaging element having a lower loop-shaped engaging element density and / or a lower engaging element height than the region (2) at the end of the surface fastener. There is a region (1) on the surface, and therefore the peeling strength of the loop hook-and-loop fastener in the splitting direction is weakened, so that the engagement can be easily peeled off in the splitting direction.

Nevertheless, since the region (2) having a high peeling strength exists in the central portion of the hook-and-loop fastener, the overall engaging force is almost the same as that of the conventional one, and a high peeling strength can be obtained. Become. Therefore, the alignment can be easily performed.

As described above, the loop hook-and-loop fastener of the present invention can maintain the peel strength in the vertical direction and reduce the peel strength in the split direction. As a result, when it is engaged in an inaccurate place at the time of alignment, it can be easily peeled off in the splitting direction due to the presence of the area (1), and after confirming that the position is more accurate, the area (1) is fixed. Strong engagement can be obtained by pressing strongly so that the engagement of 2) occurs.

The vertical peeling strength in the present invention means the strength of attaching the hook-and-loop fastener and the loop-side fastener to the plate, engaging the hook-and-loop fastener, and pulling and peeling the surface fastener in the vertical direction. To do. In addition, the peeling strength in the split direction means that the hook-and-loop fastener and the loop-side fastener are attached to the plates, and the ends of the plates engaged with each other are grasped by the hook-and-loop fasteners, and the ends are separated by 180 degrees. It means the strength when the plates are pulled so as to open each other and the engagement is disengaged.

According to the present invention, the peeling strength in the vertical direction exhibits high engaging strength, but the peeling strength in the splitting direction is low, and the reason why it can be easily removed even in a strongly pressed and engaged state is as follows. It is considered that the presence of the region (2) provides a high peeling strength in the vertical direction, and the presence of the region (1) provides an opportunity to facilitate the peeling in the split direction. ..

In fact, when the loop-shaped engaging element existing in the region (1) is eliminated, that is, when the region (1) in which the engaging element does not exist at all is provided around the region (2), the present invention Compared with the case where the specified region (1) exists, the peeling strength in the splitting direction is high, and the ease of removal is hardly improved.
That is, in the case of peeling in the splitting direction, there is a region (1) having a low engaging force around it, the peeling starts from that region, and then the peeling of the region (2) having a high engaging force occurs. It is considered that the reason is that the force required for peeling gradually increases from the region (1) to the region (2).

It is a perspective view which shows typically a preferable example of the loop surface fastener of this invention. It is sectional drawing which represented typically an example of the cut surface in the thickness direction which was cut at the XY part of FIG. It is sectional drawing which represented the other example of the cut surface in the thickness direction which was cut at the XY part of FIG. It is a perspective view which shows typically another preferable example of the loop hook-and-loop fastener of this invention. It is a perspective view which shows typically another preferable example of the loop hook-and-loop fastener of this invention. It is a perspective view which shows typically another preferable example of the loop hook-and-loop fastener of this invention.

Hereinafter, the loop hook-and-loop fastener of the present invention will be described in detail. FIG. 1 schematically shows a preferable example of the loop surface fastener of the present invention, and FIGS. 2 and 3 schematically show a cut surface in the thickness direction cut at the XY portion of FIG. It is a cross-sectional view shown in.
In the loop surface fastener of the present invention, as shown in FIGS. 2 and 3, there are many loop-shaped engaging elements (4) rising from the surface of the base cloth (3). Then, on the same surface where the loop-shaped engaging elements are present, in the case of FIGS. 2 and 3, a region (1) having a low loop-shaped engaging element density and a region (2) having a high loop-shaped engaging element density are present. ) Exists. As a result, the peel strength in the splitting direction is lower in the region (1) than in the region (2).

In FIG. 2, the height of the loop-shaped engaging element existing in the region (1) and the height of the loop-shaped engaging element existing in the region (2) are the same and exist in the region (1). A loop hook-and-loop fastener coexisting on the same surface in a state where the density of the loop-shaped engaging elements present in the region (2) is lower than the density of the loop-shaped engaging elements existing in the region (2) is shown.
In FIG. 3, the density of the loop-shaped engaging element existing in the region (1) is lower than that of the region (2), and the height of the loop-shaped engaging element in the region (1) is the loop-shaped in the region (2). It shows a loop hook-and-loop fastener that coexists on the same surface in a state lower than the engaging element.

As a result, in the ones of FIGS. 2 and 3, the peeling strength in the split direction is lower in the region (1) than in the region (2), and in the one of FIG. 2, the hook hook-and-loop fastener is vertically engaged so as to engage. When the elements are brought closer to each other, they are not easily engaged due to the region (2) where the element density is high, and the alignment can be easily performed. Since the region (1) having a low value is present, it is possible to easily peel off the region (2) following the region (1) in the splitting direction.

In a loop hook-and-loop fastener having such a region (1) and a region (2) on the same surface, as shown in FIG. 1, the region (2) is at the center of the loop hook-and-loop fastener and the region (1) is at the end. The presence of the region (2) makes it easier to maintain the engagement strength in the vertical direction and the region (1) to reduce the peeling strength in the split direction.

In the loop hook-and-loop fastener of the present invention, the loop-shaped engaging element density in the region (1) is lower than the loop-shaped engaging element density in the region (2), or the height of the loop-shaped engaging element in the region (1) is increased. By lowering the height of the loop-shaped engaging element in the region (2) or by using both of them in combination, the peel strength in the split direction is lower in the region (1) than in the region (2). .. Specifically, it is preferable that the peeling strength of the region (1) in the splitting direction is 4 to 10 N / cm lower than the peeling strength of the region (2) in the splitting direction. Regarding the peeling strength in the vertical direction, it is preferable that the peeling strength of the region (1) is 5 to 16 N / cm ² lower than the peeling strength of the region (2).

As the method for measuring the peel strength in the present invention, the hook surface fastener L20740 manufactured by Clarefasning Co., Ltd., which is widely marketed as the hook surface fastener of the engagement partner, is used, and the peel strength in the vertical direction is JIS from 10 samples. According to the method described in K6849, the adhesive is changed to a hook-and-loop fastener and measured, and the peeling strength in the split direction is measured by changing the adhesive to a hook-and-loop fastener according to the method described in JIS K6853. When a loop hook-and-loop fastener having a predetermined width cannot be obtained, the peeling strength at that width is obtained and converted. Further, the surface fasteners having the loop-shaped engaging element state of the region (1) or the region (2) on the entire surface may be separately manufactured and measured.

In the loop hook-and-loop fastener of the present invention, the region (2) exists discontinuously in the loop hook-and-loop length direction at regular intervals as shown in FIG. 1, or as shown in FIG. 4, the loop hook-and-loop fastener length. It may exist continuously in the vertical direction. More preferably, it exists in a discontinuous manner as shown in FIG. 1. In such a case, all four sides of the region (2) are surrounded by the region (1) and have a predetermined length. A loop hook-and-loop fastener close to is easily obtained.
In addition, in FIGS. 1 and 4 to 6, the loop-shaped engaging element existing on the base cloth surface is omitted. In the real thing, a loop-shaped engaging element exists in both the region (1) and the region (2) in these figures.

In the present invention, when all four sides of the region (2) are surrounded by the region (1) and the region (1) is an end portion, the region (1) can be easily peeled off from any end portion in the splitting direction. The effect of the present invention is increased. Of course, the loop hook-and-loop fastener of the present invention may be a tape-shaped fastener as shown in FIGS. 1 and 4, or a rectangular fastener having a small vertical and horizontal difference as shown in FIGS. 5 and 6.

Further, in such a loop surface fastener, the warp yarn and the loop-shaped engaging element yarn constituting the base fabric are both yarns made of polyester fibers, and the weft yarns are yarns made of polyester-based heat-sealing fibers. When the loop-shaped engaging element thread is fixed to the base cloth by melting the heat-sealing fibers, the base cloth is flexible and can be easily peeled off, which is preferable.

In the case of a conventional loop hook-and-loop fastener, an adhesive called a backcoat layer is applied to the back surface of the base cloth in order to prevent the loop-shaped engaging element from being pulled out from the base cloth during engagement disengagement. There is. Therefore, the base cloth is hardened with resin and becomes rigid. As described above, when the thread for the loop-shaped engaging element is fixed to the base fabric by the heat-sealing fiber, it is not necessary to apply the back coat layer to the back surface, and as a result, the base fabric becomes flexible. Combined with the presence of the region (1) having a low peeling strength in the splitting direction, the peeling becomes easier.

The case where there is a difference in the density of the loop-shaped engaging element between the region (1) and the region (2) has been mainly described above, but in addition to this, a difference is provided in the height of the loop-shaped engaging element. It is also possible to make the peel strength of the region (1) in the splitting direction lower than that of the region (2). That is, the height of the loop-shaped engaging element existing in the region (1) is made lower than the height of the loop-shaped engaging element existing in the region (2), so that the region (1) is split. The peel strength in the direction can be made lower than that of the region (2).

Of course, it is also possible to combine these element densities and the height of the loop-shaped engaging element to make the peeling strength of the region (1) in the splitting direction lower than the peeling strength of the region (2).

Hereinafter, the loop surface fastener of the present invention will be specifically described.
A loop hook-and-loop fastener having a base cloth made of a woven fabric as in the present invention mainly consists of warp threads, weft threads, and threads for a loop-shaped engaging element. Then, a multifilament thread is used as the thread for the loop-shaped engaging element. In the loop hook-and-loop fastener of the present invention, the warp yarn and the loop-shaped engaging element yarn constituting the base fabric are both yarns made of polyester fibers, and the weft yarns are yarns made of polyester-based heat-sealing fibers. Is preferable as described above.

Conventionally, threads made of polyamide fibers such as nylon 6 and nylon 66 have been widely used for surface fasteners based on woven fabrics, but when polyamide fiber threads are used, warp threads are used. Even if a method of fusion-fixing the loop-shaped engaging element yarn to the base fabric using nylon-based heat-sealing fibers as the weft and weft is used, the base fabric fixing force of the nylon-based heat-sealing fibers is low and sufficient. It is not possible to obtain peeling durability of the engaging element. Therefore, in the case of a hook-and-loop fastener using polyamide fibers, it is essential to provide a backcoat layer, but when a backcoat layer is present, the base fabric becomes hard and peels off as described above. It becomes difficult to do.

In the present invention, preferably, the warp yarn and the loop-shaped engaging element yarn are formed of polyethylene terephthalate homopolymer or polybutylene terephthalate homopolymer. In any case, polyethylene terephthalate polyester or polybutylene terephthalate polyester having a high melting point that does not melt at the heat treatment temperature for fusing the sheath component of the core-sheath type heat-sealing fiber constituting the weft, which will be described later, is preferable. ..

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

The weft is also preferably a multifilament yarn, and the thickness of the multifilament yarn constituting the weft is preferably a multifilament yarn having a total decitex of 24 to 72 filaments of 75 to 300 decitex, particularly 24 to 48 yarns. A multifilament yarn having a total decitex of 75 to 200 decitex is preferable.

The weft yarn preferably contains heat-sealing fibers in order to eliminate the need for a backcoat layer, and as a specific example of the heat-sealing fibers, a core sheath having a sheath component as a heat-sealing component. Mold heat-sealing fibers are used. Since the weft yarn contains the heat-sealing fiber, the loop-shaped engaging element yarn can be firmly fixed to the base fabric.

Instead of using heat-sealing fibers for the weft, it is also possible to fix the loop-shaped engaging element yarn to the base fabric by using heat-sealing fibers for the warp, but the loop-shaped engaging element Since the yarn is driven into the base fabric in parallel with the warp, the warp has extremely few intersections with the loop-shaped engaging element yarn as compared with the weft. Therefore, when the heat-sealing fiber is used only for the warp. It is difficult for the loop-shaped engaging element thread to be firmly fixed to the base cloth. Furthermore, when heat-sealing fibers are used for the warp threads, 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 and continuous production of hook-and-loop fasteners of constant quality. It tends to be difficult.

As the core-sheath type heat-sealing fiber described above, one made of a polyester-based resin capable of melting the sheath component and firmly fixing the root of the loop-shaped engaging element to the base cloth is used, specifically. 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 a polyester fiber having a core-sheath type cross section made of a melting low melting point or low softening point polyester resin.

More specifically, polyethylene terephthalate homopolymer is used as a core component, and a large amount of copolymerization component represented by isophthalic acid, adipic acid, etc. is copolymerized, for example, 15 to 30 mol% copolymerization is performed 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 preferably 100 to 200 ° C., and is preferably 20 to 150 ° C. lower than the melting point of the warp yarn, the core component, or the multifilament yarn for the loop-shaped engaging element. 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 ratio of the core-sheath type heat-sealing fibers to the fibers constituting the weft is particularly high when all of the wefts are substantially formed of the core-sheath type heat-sealing fibers, that is, the wefts. In the case of a multifilament yarn made of a core-sheath type heat-sealing filament, the loop-shaped engaging element yarn is firmly fixed to the base fabric, which is preferable.

If the fibers that make up the 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 easily cracked, and is sewn. In such a case, the base cloth is easily torn from the sewing thread portion. Therefore, the heat-fusing 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 40:60 to 60:40.

Since the loop-shaped engaging element thread 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-sealed. Multifilament yarns having a melting point, i.e., non-copolymerized polyethylene terephthalate or polybutylene terephthalate, are preferred.

In particular, when a multifilament made of polyethylene terephthalate polyester is used as the loop-shaped engaging element existing in the region (1) and a multifilament made of polybutylene terephthalate polyester is used as the loop-shaped engaging element existing in the region (2), The peel strength of the region (2) becomes higher than the peel strength of the region (1), and a loop hook-and-loop fastener suitable for the present invention can be obtained.

The thickness of the multifilament yarn constituting the loop-shaped engaging element yarn is preferably a multifilament yarn having a total decitex of 150 to 300 decitex consisting of 5 to 15 filaments, particularly from 7 to 12 filaments. A multifilament yarn having a total decitex of 16 to 280 decitex is particularly preferable.

It is also possible to cause a difference in peel strength between the region (1) and the region (2) by the number of filaments of the multifilament forming the loop-shaped engaging element, and in that case, the region (1) It is preferable that the number of multifilaments forming the existing loop-shaped engaging element is 3 to 10 less than the number of multifilaments forming the loop-shaped engaging element existing in the region (2).

Next, a method of manufacturing a loop hook-and-loop fastener from the above warp, weft, and multifilament yarn for a loop-shaped engaging element will be described.
First, the loop surface fastener woven fabric is woven from the warp yarn, the weft yarn, and the multifilament yarn for the loop-shaped engaging element described above. As the woven structure of the woven fabric, a plain weave in which a multifilament yarn for a loop-shaped engaging element is used as a part of the warp yarn is preferable.

The loop-shaped engaging element yarn exists parallel to the warp yarn, rises from the base fabric surface in the middle of the structure, forms a loop without straddling the warp yarn, and the woven structure existing parallel to the warp yarn hooks. It is preferable because it is easy to engage with the shape engaging element.

The weaving density of the warp threads is preferably 45 to 90 threads / cm after the heat treatment, and the weaving density of the weft threads is preferably 15 to 30 threads / cm after the heat treatment. The weight ratio of the weft yarn is preferably 15 to 40% with respect to the total weight of the loop-shaped engaging element yarn, the warp yarn, and the weft yarn constituting the loop surface fastener.

The number of driven multifilament yarns for the loop-shaped engaging element is preferably about 3 to 8 for 20 warp yarns (including monofilament yarn for hook-shaped engaging element or multifilament yarn for loop-shaped engaging element). ..

It is also possible to cause a difference in the peeling strength between the region (1) and the region (2) in the splitting direction due to the difference in the number of threads for the loop-shaped engaging element. In that case, the region (1) ) Is reduced from the number of threads for the loop-shaped engaging element existing in the region (2) to be driven. Specifically, the number of multifillants constituting the loop-shaped engaging element existing in the region (1) constitutes the loop-shaped engaging element existing in the region (2). It is preferable that the number of multifilaments is 3 to 10 / cm less than the number of multifilaments. By changing the number of driving pieces in the area (1) and the area (2), it is possible to make a difference in the density of the loop-shaped engaging elements in both areas.

In addition to changing the number of threads to be driven, the density of the loop-shaped engaging element can be different by reducing the frequency of rising from the base cloth surface of the loop-shaped engaging element thread in the region (1). The peel strength of the region (1) in the splitting direction can be made lower than that of the region (2). Specifically, the density of the loop-shaped engaging element in the region (1) ^{is preferably 30 to 90 pieces / cm 2} lower than the density of the loop-shaped engaging element in the region (2), and particularly 40 to 80 pieces / cm. It is preferably lowered by ^{cm 2.} The element density of the loop-shaped engaging element in the region (1) is 10 to 90 elements / cm ² , and the element density of the loop-shaped engaging element in the region (2) is 40 to 120 elements / cm ² . The range is preferred.

In particular, by setting the density of the loop-shaped engaging element in the region (2) to 50 to 120 pieces / cm ^2, which is larger than that of the conventional general loop hook-and-loop fastener, it is possible to suppress unnecessary engagement at the time of alignment. , The engagement of the region (1) can be selectively generated. Further, when the features of the region (1) and the region (2) are exhibited by the difference in the density of the loop-shaped engaging elements, the density of the loop-shaped engaging elements in the region (2) is 70 to 120 pieces / cm ² , and the region ( It is preferable that the density of the loop-shaped engaging elements in 1) is in ^{the range of 10 to 40 elements / cm 2} because the features of the present invention can be remarkably exhibited.

In the loop hook-and-loop fastener having the region (1) and the region (2) as described above, the region (1) and the region (2) alternate in the warp and weft directions, and the region (1) is a continuous region in a grid pattern. The region (1) is surrounded by the region (2) by regularly forming 2) so as to exist as a discontinuous region surrounded by a grid and cutting at the middle portion of the region (1). A loop hook-and-loop fastener is obtained.

As a specific manufacturing method, the reciprocating motion of the heddle frame for forming the loop-shaped engaging element can be easily carried out by using a loop forming device controlled by an electric signal, which is suitable for the present invention. is there. That is, by using the above three types of threads and controlling the reciprocating motion of the heddle frame forming the loop-shaped engaging element by an electric signal, a device composed of a periodic structure using an extremely large number of weft threads is used. It can be easily manufactured.

In a normal 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 repeat the reciprocating motion of the heddle frame. There is. However, when the cards are connected in a chain shape, the length must be set so that they can be built into the loom, so that the cycle of the reciprocating motion is physically limited. The length limit varies depending on the type of loom, but in many cases, the limit is to form a structure in a cycle of up to about 50 weft threads.

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 limitation on the length when the cards are connected in a chain shape, and it is possible to form an organization in which an extremely large number of weft threads, for example, 1000 or more weft threads are driven. Then, in the case of controlling the reciprocating motion of the heddle frame by an electric signal, the loom raises and lowers the heddle frame by using an electric magnet, a motor, or the like.

For example, for 30 to 80 weft yarns, the loop-shaped engaging element yarn forms a loop after the three weft yarns float and sink, and a loop is formed on the base cloth to form a region (I). In the subsequent 100 to 250 weft threads, the loop-shaped engaging element threads are woven into the base fabric so as to form a loop after diving through one weft thread to form a region (2), and further warp threads 70 to 160. In the 30 to 60 warp yarns separated by the main yarn, a loop-shaped engaging element yarn that always forms a loop after the three weft yarns are floated and sunk is woven into the region (1), and the obtained loop surface fastener is specified. By cutting at the middle portion of the region (1) close to the length and width, the suitable hook-and-loop fastener fabric of the present invention in which the region (1) surrounds the region (2) is produced.

In the present invention, all four sides of the loop hook-and-loop fastener are surrounded by a region (1), and this region (1) is located at the end of the loop hook-and-loop fastener, which is peeled off from any side. It is preferable because it is easy to do, but it is not necessary that all four sides are surrounded by the area (1), at least one side is covered with the area (1), and this area (1) is a surface. If it is located at the end of the fastener, it can be easily peeled off by peeling in the splitting direction using that side.

In the loop surface fastener of the present invention, the area of the area (2) is 52 to 90% of the total area of the area (1) and the area (2) in order to maintain the peeling strength required for the surface fastener. Is preferable. More preferably, it is in the range of 60 to 80%.
The width of the region (2) is preferably 10 to 100 mm in width and 5 mm or more in length, and more preferably 15 to 50 mm in width and 15 to 50 mm in length. The width of the region (1) is preferably 2 to 20 mm, particularly preferably 2 to 10 mm.

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 for the loop-shaped engaging element is used as a base. Firmly fix to the cloth. This eliminates the need for the backcoat layer addition process that has been performed with conventional hook-and-loop fasteners. The temperature at the time of heat treatment is generally 150 to 250 ° 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 185 to 220 ° C. More preferably, it is in the range of 190 to 210 ° C.

In the present invention, when the feature that the region (1) and the region (2) exist is expressed by the height of the loop-shaped engaging element existing in the region (1) and the region (2), the region (2) The height of the loop-shaped engaging element existing in the region (1) is 0.2 to 1.4 mm higher than the height of the loop-shaped engaging element existing in the region (1), particularly 0.3 to 1.0 mm. Is preferable in order to exhibit the effect.

The height of the loop-shaped engaging element existing in the region (1) is 1.2 to 3.0 mm, and the height of the loop-shaped engaging element existing in the region (2) is 1.4 to 4. A range of 0 mm is preferred. The height of the loop-shaped engaging element in the present invention is the distance from the base cloth surface to the top of the loop-shaped engaging element, and is an average value of 10 arbitrarily selected loop-shaped engaging elements.

The loop hook-and-loop fastener of the present invention thus obtained and excellent in split reduction property is firmly engaged because there is a region (1) having a low peel strength in the split direction around it. Even after that, when the engagement is disengaged and the alignment is performed again, the disengagement strength in the split direction can be reduced.

In this way, the height of the loop-shaped engaging element in the region (1) is made lower than the height of the loop-shaped engaging element in the region (2) and / or the density of the loop-shaped engaging element in the region (1) is set to the region (2). ) Is lower than the loop-shaped engaging element density, so that the region (1) can be easily peeled off in the splitting direction in preference to the region (2), and can be easily peeled off at the correct position. Can be reattached.

The loop surface fastener of the present invention, that is, the presence of the region (1) instead of the surface fastener of only the region (2) is excellent in the split reduction property so as to preferentially create a trigger for easy peeling in the split direction. The loop hook-and-loop fastener is excellent as a loop hook-and-loop fastener used for attaching a large object such as a ceiling material, a wall material, an interior material, etc. of an automobile or a house. Further, it is suitably used in other fields such as automobile fields, building materials, civil engineering, etc., and since the region (1) existing at the end is often flexible, the end of the hook-and-loop fastener is easy to touch. It is also suitably used in the fields of daily necessities, clothing, medical products, etc., where a flexible touch is preferred.

Hereinafter, the present invention will be described with reference to Examples.
Example 1
The following threads were prepared as warp threads, weft threads, and multifilament threads for loop-shaped engaging elements that constitute the base fabric of the hook-and-loop fastener.
[Warp]
・ Multifilament yarn made of polyethylene terephthalate with a melting point of 260 ° C ・ Total decitex and number of filaments: 30 at 167 dtex

[Weft (multifilament heat-sealed yarn made of core-sheath 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 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 warp threads / cm and 20 weft threads / cm. Then, one out of every four warp yarns was driven into the multifilament yarn for the loop-shaped engaging element in parallel with the warp yarns without straddling the warp yarns. Then, in the region (2) consisting of 40 weft threads, a row in which a loop is formed on the base cloth so as to form a loop after diving in one weft thread and a loop are formed after the three weft threads are floated and lowered. The rows were woven alternately, and in the area (1) for 12 wefts existing before and after the rows, three latitudes were raised and lowered to form a loop.

Further, a region forming a loop after the loop-shaped engaging element floats and sinks three weft yarns is created in a portion having a width of 24 warp yarns for every 100 warp yarns, and this region is also designated as region (1). Then, the woven fabric for the loop hook-and-loop fastener was woven in this way. This loop surface fastener woven fabric was heat-treated at 200 ° C. As a result, the loop-shaped engaging element yarn was firmly fixed to the base fabric by the fusion product of the core-sheath type heat-sealing fiber used as the weft.
In the obtained loop hook-and-loop fastener, a 2 cm square region (2) exists in a discontinuous state, the width of the region (1) sandwiched between the regions (2) is 0.5 cm, and the width in the weft direction is 0.5 cm. There is a 0.25 cm region (1).

The middle of the region (1) sandwiched between the loop hook-and-loop fastener regions (2) obtained as shown in FIG. 1 is cut, and the region (1) surrounds the region (2) as shown in FIG. Loop surface fasteners with lengths and widths of 2.5 cm and 2.5 cm were manufactured. The area ratio of the area (2) was 64% with respect to the total area of the area (1) and the area (2).

The loop-shaped engaging element density of the obtained loop surface fastener region (1) is 30 pieces / cm ² , and the loop-shaped engaging element density of the region (2) is 90 pieces / cm ^2. The height of both the area (1) and the area (2) was 2.4 mm.

Using the obtained loop hook-and-loop fastener, a hook hook-and-loop fastener (L20740 manufactured by Clarefasning) was used as an engagement partner, and both were bonded to a plastic plate, and both were overlapped, and the vertical peeling strength was described in JIS K6849. According to the method described above, the adhesive is changed to a hook-and-loop fastener and measured, and the peeling strength in the split direction is measured by changing the adhesive to a hook-and-loop fastener according to the method described in JIS K6853. The measured value is 31 N and 12 N / cm per unit, and the measured value in the vertical direction is 95 N and 15 N / cm ^{2 per unit.} The result was that it could be peeled off. In addition, even when the plastic plate was strongly pressed and engaged, the plastic plate used for splitting force was not bent or damaged.

It should be noted that the loop surface fastener and the region (2) consisting of only the above region (1) are provided with the vertical peeling strength and the splitting strength of the loop surface fastener regions (1) and (2), respectively. Loop surface fasteners consisting of chisel were produced, respectively, and as a result, the peeling strength in the vertical direction and the peeling strength in the splitting direction of the region (1) were 6 N / cm ² and 10 N / cm, and one region (2). The peeling strength in the vertical direction and the peeling strength in the splitting direction of) were 20 N / cm ² and 18 N / cm.

Example 2
In the first embodiment, the height of the loop-shaped engaging element existing in the region (1) is changed to 1.9 mm, and the loop-shaped engaging element yarn in the same region and the region (2) floats and sinks the weft. ^{The element density was changed to 60 pieces / cm 2} by changing the number of elements to be formed, and the obtained loop hook-and-loop fastener had a 3.5 cm square region (2) in a discontinuous state, and the region (2) had a region (2). There is a region (1) having a width of 0.5 cm and a width in the weft direction of 0.25 cm in the sandwiched region (1). The density of the loop-shaped engaging element of the obtained loop surface fastener is 60 pieces / cm ² for both the region (1) and the region (2), and the height of the loop-shaped engaging element is 1. It was 9 mm and the area (2) was 2.4 mm.

The middle of the region (1) sandwiched between the loop hook-and-loop fastener regions (2) obtained as shown in FIG. 1 is cut, and the region (1) surrounds the region (2) as shown in FIG. Loop surface fasteners with lengths and widths of 4.0 cm and 4.0 cm were manufactured. The area ratio of the area (2) was 77% with respect to the total area of the area (1) and the area (2). Other than these, it was produced in the same manner as in Example 1.

When the same measurement as in Example 1 was performed with this loop hook-and-loop fastener, the measured value in the split direction was 32 N and 8 N / cm per unit, and the measured value in the vertical direction was 93 N and 6 N / cm ^{2 per unit.} Comparing only the numerical values, the result was that it could be peeled off in the splitting direction with a strength of 34% with respect to the vertical direction. In addition, even when the plastic plate was strongly pressed and engaged, the plastic plate used for splitting force was not bent or damaged.

It should be noted that the loop surface fastener and the region (2) consisting of only the above region (1) are provided with the vertical peeling strength and the splitting strength of the loop surface fastener regions (1) and (2), respectively. A loop hook-and-loop fastener consisting of only two was produced, and when it was determined from this, the peeling strength in the vertical direction and the peeling strength in the splitting direction of the region (1) were 5 N / cm ² and 7 N / cm, while the region (2). The peeling strength in the vertical direction and the peeling strength in the splitting direction of) were 12 N / cm ² and 12 N / cm.

Comparative Example 1
In the loop hook-and-loop fastener used in the second embodiment, the same loop-shaped engaging elements having no distinction between the region (1) and the region (2) are uniformly present on the entire surface at the same density. Replaced with the loop hook-and-loop fastener (B9750Y-00 manufactured by Clarefasning Co., Ltd .: loop-shaped engaging element height 2.7 mm, loop-shaped engaging element density 120 pieces / cm ² ), and the length and width are 2.0 cm. When the same measurement as in Example 1 was performed with a 2.0 cm loop hook-and-loop fastener, the measured value in the split direction was 47 N and 24 N / cm per unit, and the measured value in the vertical direction was 98 N and 24 N / cm ^{2 per unit.} Yes, when compared only with the measured values, the result was that it could be peeled off in the split direction with a strength of 48% with respect to the vertical direction. In some cases, the peeling strength in the splitting direction was so strong that the attached plate was bent.

From the above results, as can be seen by comparing Examples and Comparative Examples, the loop hook-and-loop fastener of the present invention was able to reduce the peeling strength in the split direction while maintaining the strength in the vertical direction. .. In addition, this saves time and effort when the engagement is firmly engaged and then the engagement is disengaged and the alignment is performed again, and the wall plate and the like are not broken, and the positions are set in place without gaps. It means that it can be installed accurately and firmly.

1: Area (1)
2: Area (2)
3: Base cloth 4: Loop-shaped engaging element

Claims (7)

In a loop hook-and-loop fastener in which a large number of loop-shaped engaging elements made of multifilaments exist on the surface of the base cloth, regions (1) and regions (2) coexist on the same surface where the loop-shaped engaging elements exist. The area (2) is at the center of the loop hook-and-loop fastener, and the area (1) is at the end. The width of the area (2) is 15 to 50 mm, and the width of the area (1) is 2 to 10 mm. a is, present in a region (1) existing set of density region (2) lower than the density of the loop-like engaging elements are present in and / or area of the loop-like engaging elements (1) An interior member attached with a loop hook-and-loop fastener, wherein the height of the loop-shaped engaging element is lower than the height of the loop-shaped engaging element existing in the region (2). Across the area (2), interior members mounted in a loop surface fastener according to claim 1, regions on both sides (1) are present. The interior member attached with the loop hook- and-loop fastener according to claim 1 or 2 , wherein the area (1) surrounds the area (2). The interior member attached with the loop hook-and-loop fastener according to any one of claims 1 to 3, wherein the area of the area (2) is 52 to 90% of the total area of the area (1) and the area (2). Attached with the loop hook-and-loop fastener according to any one of claims 1 to 4, wherein the loop-shaped engaging element density of the region (2) is 30 to 90 pieces / cm ^{2 higher than the loop-shaped engaging element density of the region (1).} Interior material . Claims 1 to 5 wherein the height of the loop-shaped engaging element existing in the region (2) is 0.2 to 1.4 mm higher than the height of the loop-shaped engaging element existing in the region (1). Interior member attached with the loop hook-and-loop fastener described in either. The warp yarn and the loop-shaped engaging element yarn constituting the base fabric are both yarns made of polyester fibers, the weft yarns are yarns made of polyester-based heat-sealing fibers, and the engaging element yarns are these heat-melting yarns. The interior member attached with the loop surface fastener according to any one of claims 1 to 6, which is fixed to the base fabric by melting the adhesive fiber.

Images