JPH11244009A - Hook-and-loop fastener made of fiber - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hook-and-loop fastener which can secure flexibility and transparency, has a required binding strength and a peel-off strength, and excellent productivity, and of which price can be reasonably set. SOLUTION: This hook-and-loop fastener is knitted into a knit fabric 1 consisting of a base structure, and has female elements projecting from the surface of the knit fabric 1 and consisting of at least many loops 4a. The above- mentioned female element is composed of a single self-twisting monofilament, and the projecting base parts from the knit fabric 1 of the loops 4a are twisted. This stabilizes the form of the loops 4a projecting from the base fabric 1. For instance, not only in the monofilament 4 but also when a fine and transparent monofilament is used for warp 2 and weft 3, the backface can be seen through from the surface of the hook-and-loop fastener.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a woven or knitted fabric obtained by weaving or knitting, which has a female engaging element comprising at least a large number of loops formed by weaving and knitting simultaneously with the woven and knitting of the woven or knitted fabric. The present invention relates to a surface fastener made of fiber.

[0002]

2. Description of the Related Art A surface fastener of this type is generally composed of a male engaging member having a plurality of hook-shaped or mushroom-shaped male engaging elements erected on the surface of a flat base material, and a surface of the flat base material. A female engaging member having a large number of loop-shaped female engaging elements rising closely to the male and female engaging members by opposing the male and female engaging element forming surfaces and pressing the male and female engaging members. The engagement is disengaged when the engagement element and the female engagement element are engaged with each other and joined, or when the male and female engagement members are peeled off.

A hook-and-loop fastener having such a structure is used in a very wide range of fields from daily necessities to industrial materials. In recent years, a hook-and-loop fastener made of a fine shape has been used instead of a hook-and-loop fastener made of a woven or knitted fabric. Synthetic resin molded surface fasteners obtained by simultaneously molding a flat base material have been put into practical use, and are being used as fasteners for various diapers and sanitary articles that are easy to directly touch human skin. ing.

As described above, regarding the male engaging member, although various types and sizes of engaging elements or products having various materials and structures have been put to practical use, the male engaging member is disengaged from the male engaging member. As for the female engaging member, the basic structure does not change. That is, the most common female engaging member is a so-called pile woven or knitted fabric having a large number of loops erected from the ground structure of a fiber woven or knitted fabric, and the pile (loop) is usually a multifilament pile. It is obtained by weaving or knitting in the ground structure of a woven or knitted fabric. As other female engaging members, with the practical use of the engaging element having the fine shape of the integrally molded surface fastener described above, a general nonwoven fabric in which fine piles are densely formed on the surface has been used. ing.

In addition to the above structure, for example, Japanese Patent Publication No. 55-3
No. 8121 discloses an example in which the loop, which is a female engaging element, is composed of a single 90d thread composed of a multifilament twisted thread. The hook-and-loop fastener disclosed in this publication,
The weft constituting the ground structure of the woven fabric is composed of twisted yarn consisting of multiple fibers, a single rubber thread is used for part of the warp, and when weaving, the rubber thread is woven in a state where it is pulled, and due to shrinkage at the time of weaving The loop and a hook loop, which is a male engaging element, are tightly fixed to the ground tissue.

On the other hand, the use of this type of hook-and-loop fastener is diversified, and even in the same industrial field, for example, in the field of clothing where fashionability is required, the garment material,
There is a strong demand for hook-and-loop fasteners that match the structure or coloring. In particular, in recent years, hook-and-loop fasteners have been frequently used not only for underwear but also for outer garments, for example, for thin clothing such as lace ground, the hook-and-loop fastener also corresponds to those clothing materials or their structures. It is desirable.
This is not limited to general clothing, for example, when the hook-and-loop fastener is used for various sports clothing and bags, a part of the logo mark attached to the clothing body in the fastener part becomes invisible. Such a situation is not preferable.

[0007]

However, even with the hook-and-loop fastener disclosed in the above-mentioned publication, the weaving density of the base material is increased by rubber threads, and most of the yarns used are twisted yarns. In addition to the fact that a thin and flexible surface fastener cannot be obtained, as is apparent from other examples disclosed in this publication, the conventional surface fastener, particularly its female engaging member is made of fiber as described above. Many piles are densely erected on the surface of a flat substrate made of
No matter how much the plate-shaped substrate is devised, the backside of the hook-and-loop fastener cannot be seen through due to piles densely formed on the surface, and the above-mentioned problems cannot be solved.

Therefore, conventionally, a desired pattern, character, mark, or the like is applied to the surface after attaching the hook-and-loop fastener, or a required pattern or the like is previously applied to the hook-and-loop fastener surface. In the former case, problems such as dyeability tend to occur, and it takes time to apply a pattern or the like. In the latter case, not only the number of steps is increased, but also time and effort such as pattern matching are required at the time of attaching the hook-and-loop fastener, so that the production efficiency is significantly increased. Further, the pattern on the pile surface and the like are easily deformed, and the pattern and the like on the clothing main body are likely to be shifted with the passage of time, and the difference in color clarity and the like is likely to occur.

A first object of the present invention is to provide a surface fastener through which a pattern on the back side can be seen through a female engaging member. It is an object of the present invention to provide a hook-and-loop fastener that can not only improve the manufacturing efficiency of the female hook-and-loop fastener but also increase the productivity even when it cannot be seen through due to the material used and the structure of the base material.

[0010]

The above objects can be achieved by the present invention according to claims 1 to 12. The present inventors have conducted intensive studies based on the above-described problems, and as a result, have found that it is not necessary to follow the structure of a conventional female engaging member. That is, in the conventional female engaging member, forming as many piles as possible in a dense state increases the engagement rate with a hook piece, which is a mating male engaging element, and increases the peel strength. It was thought that the number would also increase. However, as a result of repeated experiments, as long as the pile shape is maintained, it is confirmed that even if the loop (pile) is erected independently on the surface of the flat base material, the engagement force and the peel strength are sufficiently secured. Knew.

In order to stably hold the loop on the surface of the base material while maintaining the pile shape,
As disclosed in the above publication, usually, a synthetic resin may be applied to the back surface of the flat base material to fix the base end of the loop to the base material. However, this type of hook-and-loop fastener is frequently engaged and disengaged, and if the fixation by the synthetic resin is weak, the fixation function may be lost in a short period of time. To avoid this, it is necessary to increase the amount of the synthetic resin applied to the back surface of the base material. This increase in the amount of resin not only causes the flexibility of the flat base material to be lost, but also reduces the transparency of the flat base material, for example, when the flat base material itself is formed thin. This means that it is not possible to cope with the diversification of the above-mentioned hook-and-loop fastener, and its use is also limited.

Therefore, the present inventors have further studied and found that even if the amount of the synthetic resin applied to the back surface of the base material is reduced, if the physical properties or form of the yarn constituting the loop is selected, an exceptional result can be obtained. It has been found that a loop capable of sufficiently retaining the pile shape can be formed without going through a processing step.

[0013] The invention according to claim 1 is a hook-and-loop fastener having at least a plurality of female engaging elements which are knitted and woven into the ground structure of a knitted fabric and protrude from the surface of the knitted fabric. The element is constituted by a monofilament which is a single thread, and the monofilament for the female engaging element has a self-twisting property, and the loop is twisted at the base end protruding from the knitted fabric. The main feature is a fiber fastener.

Here, the surface fastener made of fiber in the present invention is composed entirely of fiber thread, and has a function as a female engaging member having at least a female engaging element erected on one surface thereof. Not only the female engaging element, but also includes a so-called self-engaging surface fastener in which the female engaging element and the male engaging element are mixed and can be engaged and disengaged themselves. Things.

In the present invention, the female engaging element is made of a monofilament, and is woven or knitted into the ground tissue, and a loop formed by self-twisting at a protruding base end thereof is twisted. Therefore, since the loop itself grasps the warp or weft that has slipped through, the female engaging element itself has shape retention properties.For example, even when applying synthetic resin to the back surface of the base material, the amount of application is conventionally the same. Only a very small amount is required.

According to a second aspect of the present invention, there is provided the self-engaging hook-and-loop fastener. In addition to the structure of the first aspect, the self-engaging type surface fastener is further knitted and woven in the ground structure of the knitted fabric. It has a male engaging element consisting of a number of monofilaments projecting from the surface. In this case, the monofilament for the male engaging element may or may not have a self-twisting property, but after weaving knitting, a part of a loop formed from the monofilament is cut to form a hook piece or a mushroom piece. At this time, it is preferable not to have a self-twisting property from the viewpoint of easy cutting.

According to a third aspect of the present invention, the monofilament for the female engagement element has a polygonal cross section of a triangle or more, and has a self-twisting property by adopting the cross sectional shape. For example, if the monofilament has a triangular cross section, its corners (ridges) are rubbed by multiple members at the time of weaving or knitting, and a loop obtained by weaving or knitting the monofilament forms a protruding base end. Twist automatically at. Therefore, according to the present invention, no special treatment is required to develop the self-twisting property.

According to a fourth aspect of the present invention, the monofilament for the female engaging element having a twist property is a heat-crimpable yarn. Usually, in this type of fiber surface fastener, a heating step is always performed after weaving or knitting for heat treatment for setting and finishing. According to the present invention, when passing through these heating steps, the base end of the loop formed by the monofilament from the base material is self-twisted by crimping. A monofilament having such crimping performance can be produced by compound spinning a high shrinkage fiber material and a low shrinkage fiber material into a side-by-side type. The material can be obtained by combining various thermoplastic synthetic resins, but it is desirable that they have an affinity for each other. For example, they can be obtained by composite spinning of ordinary polyester and modified polyester.

In the invention according to claim 5, a multifilament is used for the yarn constituting the ground structure. In the present case, when the woven or knitted fabric constituting the base material is composed of warp and weft, spun yarn or twisted yarn can be used for each yarn as usual, but in the present invention, Multifilaments that are not substantially twisted in either or both of the wefts can be used.
When the non-twisted multifilament is used as described above, the flexibility of the above itself is utilized, and the surface fastener can be given flexibility.

[0020] The invention according to claim 6 specifies that the yarn constituting the ground structure is made of a monofilament. Depending on the application, high rigidity may be required, and in that case, it may be desirable to use a monofilament as the used yarn of the ground structure constituting the base material. In addition, when the ground fabric or the knitted fabric is constituted only by the monofilament, appropriate flexibility can be ensured by changing the fineness (thickness) and the weaving / knitting density of the used monofilament, for example.

According to a seventh aspect of the present invention, the thread constituting the ground structure is 2d to 100d, and the monofilament for the female engaging element is 2d to 70d. As disclosed in the above publication, a normal fiber surface fastener is a warp constituting a ground structure is a 140d twisted yarn composed of multiple fibers, and the weft is a 200d twisted yarn also composed of multiple fibers, Referring to the fact that the loop yarn constituting the female engaging element of the present invention is also a twist yarn made of 90d, the fineness of any yarn used in the present invention is compared with the fineness described in the above-mentioned publication. It turns out that it is much smaller. The reason why the monofilament having such a fine size can be used is largely due to the aforementioned self-shape retention performance of the female engaging element.

The invention according to claim 8 defines the fineness of the male engaging element when manufacturing the self-engaging surface fastener. That is, the yarn constituting the ground structure is 2d to 100d, the monofilament for the female engaging element is 2d to 70d, and the monofilament for the male engaging element is 70d to 300d. In the present invention, the fineness of a monofilament, which is a constituent thread of the male engaging element, is set to 70d to 70d.
The reason for defining 300d is to secure an engaging force with the female engaging element, and these numerical values are appropriately selected depending on the fineness of the female engaging element.

According to the ninth aspect of the present invention, when the ground structure is a woven structure composed of warp yarns, the preferred fineness of the warp yarns and the weft yarns for obtaining a thin and highly flexible surface fastener is defined. , Whose value is between 2d and 100
d, the weft is 30d to 100d. The point to be noted here is that the fineness of the warp of the ground structure disclosed in the above publication is 140d composed of multifilaments, and the fineness of the weft is 200d of multifilaments,
In the present invention, both the warp and the weft of the ground structure have remarkably small fineness. In particular, in the invention according to the seventh aspect, in order to manufacture a female surface fastener in which transparency and flexibility are ensured, it is within the range of the fineness.

The invention according to claim 10 further stipulates that the warp has a length of 15 d to 70 d. When the warp has such a fineness, even if a synthetic resin is applied to the back surface, it can be practically used as a ground structure. While having sufficient strength, transparency and flexibility can be secured.

The invention according to claim 11 defines the fineness of a monofilament for a male engaging element suitable for obtaining a thin self-engaging surface fastener. That is, when the monofilament for the male engaging element is 100d to 150d, the fineness of the monofilament for the female engaging element is 2d to 70d, and the fineness of the warp which is a constituent yarn of the ground structure is 15d to 70d. , The weft fineness is 30d ~ 1
The self-engaging hook-and-loop fastener manufactured as 00d is
The back surface can be completely seen through, and the flexibility is high, and the engagement strength, peel strength and the like are also sufficient. By the way, the number of wefts per inch at this time is not much different from that of the conventional one (52), and is slightly increased. Nevertheless, there are gaps between the wefts. This is because the fineness of the ground tissue and the monofilament for the male and female engaging elements is significantly smaller than that of the conventional one.

The invention according to claim 12 defines the form of the yarn used for the ground structure when the transparency in the hook-and-loop fastener is further increased. That is, according to the present invention, the yarn constituting the ground structure is made of a monofilament, and all of the monofilament and the monofilament for the female engagement element are made of a transparent or translucent material. Preferably, various characters, patterns, and coloring are applied to the back surface of the ground structure. According to the present invention, various characters, patterns, coloring, and the like applied to the back surface of the ground tissue can be clearly seen through the surface of the hook-and-loop fastener. Therefore, a pattern or a coloring that occurs when the engaging element forming surface (surface) of the surface fastener is directly colored as in the related art, or a pattern or a color between peripheral patterns or colors due to deformation of the engaging element. Problems such as sharp differences do not occur.

The invention according to claim 13 relates to a method for producing a surface fastener made of fiber, in which all of the constituent yarns according to claim 7 or 8 are all monofilaments. That is, at the same time as weaving and weaving a ground knitted fabric with the warp and the weft made of monofilament, weaving or weaving a loop with a monofilament which is a constituent material of the female engagement element, and heat setting the surface fastener after weaving. A thin resin film is formed by applying a synthetic resin material to the back surface of the set, and gas is blown from the back surface side to the front surface side of the hook-and-loop fastener, and the coating is applied to each structure of the hook-and-loop fastener. The present invention is characterized in that a bundle is formed at each intersection of the yarns, and a space is provided between the constituent yarns of the hook-and-loop fastener so that the front and back surfaces pass through between the yarns.

The synthetic resin film is bundled at each intersection of a warp, a weft, and a monofilament for a female engaging element, which are constituent yarns of a hook-and-loop fastener. In addition to the intensive joining, a gap is formed between the constituent yarns in the other part, penetrating the front and back, so that the shape of the loop, which is the female engaging element, is reliably held, and all The presence of the voids in combination with the transparency of the monofilament makes it possible to more clearly see through the back surface side from the front surface of the surface fastener.

[0029]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be specifically described below with reference to the drawings. FIG. 1 is a partial perspective view showing a first embodiment provided with a woven structure of a woven surface fastener according to the present invention. In FIG.
Is a warp, 3 is a weft, and 4 is a monofilament for a female engaging element.

In the female engaging member of the present embodiment,
Is composed of a plain weave structure composed of a warp yarn 2 and a weft yarn 3. A 30 d monofilament is used as the warp yarn 2, and a 30 d monofilament is also used as the weft yarn 3. On the other hand, the thread for the female engaging element to be woven into the fabric 1, which is the most characteristic part of the present invention, comprises a single monofilament 4, and the monofilament 4 forms a loop 4a in the fabric 1. Weaved. According to the present embodiment, the fineness of the monofilament 4 for the female engagement element is 30d.

In this embodiment, polyester is used for all of the warp yarns 2, weft yarns 3 and monofilaments 4. Usually, a thermoplastic synthetic resin material such as polyamide or polypropylene used for this type of surface fastener is used. They can be used alone or in combination. In addition, in the present embodiment, the fineness of each yarn is set as described above in order to secure the transparency of the surface fastener,
Uses transparent polyester. Note that the present invention is not intended only to ensure transparency, and is based on the premise that a monofilament is used as a thread for a female engagement element in consideration of productivity and economy.
A multifilament can also be used as the warp 2 and the weft 3 which are constituent yarns of the ground fabric 1. In addition, warp 2
When it is intended to ensure the transparency of the hook-and-loop fastener by using a multifilament for the weft 3, it is preferable to use a non-twisted yarn having substantially no twist than a twisted yarn.

Also, in this embodiment, since the weaving weaves 3 using the carrier, one yarn reciprocates in the same opening of the warp, so that two wefts 3 are always aligned. It is a so-called twin yarn state. Therefore, the weft 3
Is twice as fine. In this embodiment, the number of hits per inch of the weft 3 is 57 to 58, which is considerably larger than the usual 52 times / in. Nevertheless, the reason why the transparency is ensured is that, as described above, the fineness of all the constituent yarns uses monofilaments which are extremely small as compared with the conventional ones. This is because voids exist between the warp yarns.
Although the warp density in this embodiment is 120 to 130 yarns / in, the weft density and the warp density may be determined according to the use of the surface fastener according to the present invention.

Now, in addition to the use of the monofilament 4 as the thread for the female engagement element, the most characteristic point of the present invention is that the monofilament 4 has a self-twisting property. According to the present embodiment, the cross section of the monofilament 4 is triangular as shown in an enlarged manner in FIG. With such a cross-sectional shape, at the time of weaving the ground fabric 1 with the warp 2 and the weft 3, which are constituent yarns of the ground structure,
When the monofilament 4 is woven into the ground tissue, the monofilament 4 is naturally twisted based on the friction with respect to the ridge and the mechanism of forming the loop. The twist is inevitably concentrated at the proximal end of the loop. By this torsion, the loop 4a of the monofilament 4 is firmly woven into the ground fabric 1 in a state where the form is stabilized.

In this embodiment, the monofilament 4
Is a triangular cross section, any shape may be used as long as the cross section has the above-mentioned torsion property. In general, a polygonal cross section of a triangle or more is preferable. The twistability not only depends on the form of the monofilament 4, but also, for example, a conjugate structure fiber obtained by compound spinning a normal high heat shrinkable fiber material and a low heat shrinkable fiber material in a side-by-side type. Also, the torsion is developed by performing the heat treatment. Typical examples of the fiber material include a combination of a polyester having a low draw ratio and a polyester having a high draw ratio, or a combination of nylon 6 and nylon 66. For this combination, it is desirable to select synthetic resin materials of the same genus which have an affinity for each other.

On the other hand, in this type of hook-and-loop fastener,
There is always a finishing step before the final product is obtained, and that step involves heating.Therefore, when using a yarn that develops crimp as described above, it does not require a special heating step. A crimp is developed in the finishing step, and the warp 2 and / or the weft 3 of the ground fabric 1 are firmly gripped in a state where the crimp is twisted at the rising base end of the loop made of the monofilament 4 and the shape is maintained. The degree of twist at this time is determined by dividing the distribution of the materials to be combined,
It can be easily determined.

Next, a specific woven fabric structure example of the hook-and-loop fastener of the present invention woven using the yarn having the above-described configuration will be described with reference to FIG. In the figure, the warp yarn 2 and the weft yarn 3 constituting the base fabric 1 and the monofilament 4 constituting the female engaging element are all 30d.
Monofilament is used. Therefore, as described above, the weft yarn 3 is made of a twin yarn, and is 60d. The fabric of the ground fabric 1 is composed of a plain weave fabric of the warp 2 and the weft 3. Then, a warp row w in which two adjacent warps 2 are set as one set
The monofilaments 4 forming the loops 4a are woven every time one row is skipped. In this case, as shown in FIG.
After dipping the weft 3 of the book, jump over the next weft 3
After the next weft 3 is further sunk, it is formed successively while further siding the next weft 3 over a set of warp rows w arranged next to it. Such a woven structure is a general woven structure of a conventional male fastener, and a monofilament 4 which is a thread constituting the female engaging element is woven into three weft yarns 3 and then, while straddling a warp row w, newly. A simple loop 4a is formed.

Of course, the weaving structure shown here is merely an example of the present invention. For example, it is possible to form a loop by the monofilament 4 for every other weft yarn 3, and in this case, the loop density is increased. The engagement ratio with the male engagement element of the other party increases. In addition, in the case of this weaving structure, it is more preferable to form each loop 4a while straddling a pair of warp rows w in a zigzag manner so as to give the loops various directions.

However, when the loop 4a is formed, the monofilament 4 is rubbed by the warp yarns 2 and the weft yarns 3 and is swung in the weaving width direction, so that the twistability is automatically given. The configuration at this time is shown in FIG. In addition, since there is no guarantee that this torsion is generated when all the loops are formed, the directions of the loops 4a formed as shown in FIG. 1 are not necessarily all in the same direction. In this regard,
Some loop configurations will not be stably retained.

Therefore, in this embodiment, the woven fabric woven as described above is heat-set on a loom according to a conventional method to fix the loop form, and then the resin is applied to the back side. The base of the loop 5 is fixed to the base fabric 1 by using the resin material. In order to stabilize the loop form and further secure flexibility and transparency, the resin material is made of the same type having a high adhesiveness to each constituent yarn. It is desirable to use the above-mentioned material and to concentrate the applied amount as little as possible and at the contact portion between the protruding base portion of the loop 4a and the base fabric 1.

Therefore, in this embodiment, since the synthetic resin material is applied to the woven hook-and-loop fastener as described above, as shown in FIG. 3, a heating zone 11 is provided near the weaving front of the loom 10 of the hook-and-loop fastener. A roller coating unit 12 for applying a synthetic resin to the back surface of the surface fastener provided with the scraper 13 is provided further downstream of the heating area 11,
Further, an air nozzle 14 is provided close to the downstream portion toward the back surface of the hook-and-loop fastener. Usually, a tape loom is used for the loom 10, but a normal loom can also be used.

The hook-and-loop fastener having the above structure woven by the loom 10 is set by heating in a heating zone to fix the form, and then a synthetic resin material diluted with a solvent is coated on its back surface with a coating roller. 12a. The film thickness is adjusted by the scraper 13, and a thin film is formed on the entire back surface of the hook-and-loop fastener. When the hook-and-loop fastener reaches the installation portion of the air nozzle 14 in this state, air is blown to the thin film from the back side to the front side of the hook-and-loop fastener. With this air, each constituent yarn 2, 3, 4
The thin film in the gap existing between the layers breaks and gathers at the intersections of the constituent yarns 2, 3, and 4, and joins the intersections locally and penetrates the gaps.

In this way, the synthetic resin skin material gathers at each intersection of the warp 2, weft 3, and monofilament 4 for the female engagement element, which are the constituent yarns of the hook-and-loop fastener, and concentrates each constituent yarn at the intersection. Since the joining is performed using a synthetic resin material, the shape of the loop 4a, which is a female engaging element, does not collapse, and all the monofilaments 2, 3, 4 Is transparent so that the back surface side can be more clearly seen from the front surface of the hook-and-loop fastener.

Therefore, in this embodiment, for example, a logo mark, various patterns, characters, or colors are applied to the back surface of the hook-and-loop fastener. On the other hand, the conventional surface fastener lacks the transparency, so when applying a color or the like, the color is dropped by repeated use because the surface fastener is directly applied to the surface on which the engaging element is formed, The deformation of the engaging element causes a difference in the sharpness between the engaging element and the peripheral pattern, or the pattern is distorted. In this regard, according to the present invention, since the pattern or the like is applied to the back surface of the hook-and-loop fastener, that is, the attachment surface of the counterpart article, the above-described problem does not occur.

FIG. 4 shows a self-engaging type surface fastener according to a second embodiment of the present invention, in which male and female engaging elements are mixed on the same surface of the fabric 1. In this embodiment, the fineness of the warp 2 and the weft 3 of the ground fabric 1 is
As in the first embodiment, both are made of a 30d monofilament, the fineness of the monofilament 4 constituting the female engaging element is also 30d, and the fineness of the monofilament 5 constituting the male engaging element is also 30%. 150d, which is extremely thick as compared with other yarns, but the fineness of a conventional monofilament for a male engaging element is 200d-3.
Considering that it is 50d, it can be understood that it is extremely thin.

In this embodiment, as described above, the fineness of the monofilament 5 for the male engaging element is changed to other constituent yarns 2, 3,
The reason why the fineness is set to be larger than the fineness of No. 4 is to secure the engaging force, but the fineness can be appropriately determined depending on the application. However, in order to ensure the transparency of the hook-and-loop fastener as a product, the fineness is desirably 150d or less, and at the same time, in order to ensure a required engaging force, the fineness is desirably 100d or more. The material of each yarn used in this embodiment is a polyester having transparency as in the first embodiment.

Thus, the fabric structure according to this embodiment is substantially the same as that of the first embodiment, except that the loop 4a as the female engaging element and the loop 5a as the male engaging element have the weave width. The only difference is that they are alternately arranged in the directions. That is, the monofilaments 4 for the female engaging element in the first embodiment are replaced with the monofilaments 5 for the male engaging element every other one. This is the same as the first embodiment.

However, in this embodiment, the monofilament 4 for the female engaging element and the monofilament 5 for the male engaging element are female engaging members in addition to having different fineness as described above. While the loop 4a has the self-twisting property as described above, the monofilament 5 for the male engaging element does not need to have a special form or function, and is used for a normal hook piece or the like. It may have a circular cross section. This is because if the monofilament 5 for the male engaging element also has a self-twisting property similarly to the monofilament 4 for the female engaging element, it becomes difficult to form a hook piece described later. Therefore, for example, in the case of a so-called mushroom-shaped engagement element having a hemispherical engagement head at its tip by melting and cutting the upper end of the loop 5a as a male engagement element, as described above, If the engagement element loop 5a is twisted at the base end protruding from the ground cloth 1, it can be firmly attached to the ground cloth 1, so that the monofilament 5 for the male engagement element is also self-twisting. Can also be provided.

After the loop woven fabric having the above-described woven structure is woven, heat setting and formation of a thin film on the back surface are performed in the same manner as in the first embodiment, and then the loop 5a for the male engaging element is formed in a conventional manner. Only the hook piece 6 which is a male engaging element is partially cut off. Even in the present embodiment, the hook-and-loop fastener obtained in the same manner as in the first embodiment ensures flexibility and transparency, and it is natural that the engaging element surfaces of the hook-and-loop fasteners having the same structure are pressed against each other. Thereby, it is possible to join with a required engagement strength and to easily peel off.

The above description describes the preferred embodiments of the present invention, and the present invention is not limited to these embodiments. For example, if transparency and flexibility are not adhered to, The fineness of the warp and the weft of the ground fabric can be set to a normal fineness, and the weaving density can be appropriately selected.

[Brief description of the drawings]

FIG. 1 is a perspective view partially showing a female fastener according to a first embodiment of the present invention.

FIG. 2 is an enlarged perspective view showing a loop form example of a female engaging element of the female surface fastener, partially broken away.

FIG. 3 is a facility layout diagram showing an example of a manufacturing process of the surface fastener of the present invention.

FIG. 4 is a perspective view partially showing a female surface fastener according to the first embodiment of the present invention.

[Explanation of symbols]

 Reference Signs List 1 ground fabric 2 warp 3 weft 4 monofilament 4a (for female engaging element) 4a loop 5 (for female engaging element) monofilament 5a (for male engaging element) 5a loop 6 (for male engaging element) 6 hook piece w warp row

Claims (13)

[Claims] 1. A surface fastener having a female engaging element comprising at least a plurality of loops (4a) which is knitted and woven into a knitted fabric (1) made of a ground structure and protrudes from the surface of the knitted fabric (1), The female engaging element is constituted by a single monofilament (4), and the monofilament (4) has a self-twisting property and is in a twisted state at the base end of the loop protruding from the knitted fabric (1). A surface fastener made of fiber, characterized in that: 2. The method according to claim 1, further comprising a plurality of male engaging elements made of a monofilament which is knitted and woven into the ground structure of the knitted fabric and protrudes from the surface of the knitted fabric. The surface fastener made of fiber according to 1. 3. A monofilament for said female engaging element.
The fiber fastener according to claim 1 or 2, wherein (2) has a polygonal cross section of a triangle or more. 4. The fiber fastener according to claim 1, wherein the monofilament for the female engagement element has a crimping property due to heating. 5. The fiber surface fastener according to claim 1, wherein all of the yarns constituting the ground structure are multifilaments. 6. The fiber surface fastener according to claim 1, wherein all of the yarns constituting the ground structure are monofilaments. 7. The yarn constituting the ground structure is 2d-10.
0d, and the monofilament for the female engagement element is 2
The fiber fastener according to claim 1, wherein d is from 70 to 70d. 8. The yarn constituting the ground structure is 2d-10.
0d, the monofilament for the female engaging element is 2d to 7
0d, the monofilament for the male engaging element is 70d-
The fiber fastener according to claim 2, which is 300d. 9. The ground structure comprises a woven structure of warp yarns, wherein the warp yarns are 2d-100 and the weft yarns are 30d-100d.
The surface fastener made of fiber according to claim 7 or 8, wherein 10. The fiber fastener according to claim 9, wherein the warp has a length of 15d to 70d. 11. The fiber surface fastener according to claim 10, wherein the monofilament for the male engaging element has a length of 100d to 150d. 12. The fiber surface according to claim 10, wherein the yarn constituting the ground structure is made of a monofilament, and all of the monofilament and the monofilament for the female engagement element are made of a transparent or translucent material. fastener. 13. The method for producing a surface fastener made of fiber according to claim 7 or 8, wherein the warp (2) and the weft comprising a monofilament.
At the same time as weaving and weaving the ground knitted fabric (1) by (3), the monofilament (4),
a) knitting or weaving, heat setting the finished surface fastener, applying a synthetic resin material to the back surface of the completed surface fastener to form a thin film, the back surface of the surface fastener Gas is blown to the coating from the side toward the surface side, and the coating is focused on each intersection of the constituent yarns (2, 3, 4) of the hook-and-loop fastener. A method for producing a surface fastener made of fiber, characterized in that a gap is formed between the constituent yarns so that the front and back sides penetrate.