JP7659925B2 - Anti-fray fabric - Google Patents

Description

The present invention relates to a fabric used for the fabric of clothing that is made through cutting and sewing processes, and in particular to an anti-fray fabric that can prevent fraying from occurring at the edges (cut edges) formed by being cut during the cutting process.

In the manufacture of clothing, fabric is generally cut and sewn. The edges formed by cutting the fabric need to be prevented from fraying, and in conventional woven and knitted fabrics, the edges have been treated to prevent fraying by sewing, etc. However, such treatment significantly reduces the efficiency of garment manufacturing, so there has been a demand for fabric materials whose edges are less likely to fray even when left as cut.

Among the woven and knitted fabrics used in clothing, knitted fabrics have been developed that are less likely to fray at the edges even when left cut by using techniques such as devising a knitting method (see, for example, Patent Document 1). According to Patent Document 1, by using inelastic and elastic fibers as the fibers that make up the knitted fabric and optimizing the fineness of these two types of fibers and the yarn feeding speed when knitting the fabric, when this knitted fabric is used in a textile product that is used cut without processing the cut parts, the edges are less likely to fray even after repeated wearing and washing.

For such knitted fabrics, various techniques have been developed to prevent fraying of cut edges so that woven fabrics can be used as clothing fabrics without processing the cut areas. For example, Patent Document 2 discloses an edge fray-preventing woven fabric in which a base fabric made of ground weft yarns and ground warp yarns is provided with at least one row of cut regions that extend along the longitudinal direction of the base fabric and become the edge of the cut piece after cutting. Patent Document 3 discloses a textile product that is a woven fabric made of polyurethane fibers and other synthetic fibers and that has been treated to prevent fraying.

Patent Document 4 discloses a narrow tape with anti-fraying properties that is resistant to misalignment, fraying, runs, curls, etc., and can be used as a product even when cut off, by using heat-treated heat-fusible elastic fibers such as polyurethane fibers. Patent Document 5 discloses a heat-fusible composite yarn that is substantially made of polyurethane fibers and has improved weaving and knitting properties by forming a composite yarn from a core yarn stretched at an elongation ratio within a specified range, a supporting yarn aligned around the core yarn, and a sheath yarn wound around the core yarn with a twist number within a specified range, and further discloses that a woven fabric with excellent dimensional stability and fraying resistance can be obtained by weaving this heat-fusible composite yarn and heat-fusing the composite yarn.

JP 2019-210572 A JP 2010-189810 A JP 2021-038497 A JP 2008-190104 A JP 2014-205927 A

However, the selvage fray prevention fabric described in Patent Document 2 can prevent fraying at the edges when cut at a cutting area provided in a part of the base fabric, but does not provide the fray prevention effect when cut at any other location. Moreover, this cutting area is formed from a tangled weave structure in which tangled yarns, ground warp yarns, and ground weft yarns having a predetermined melting point are inserted in the warp direction so that they cross in this order in the thickness direction of the base fabric, resulting in a complex structure and high manufacturing costs. Furthermore, such a tangled weave structure is hard and has a poor texture, making it unsuitable for use as the fabric itself for clothing.

The textile product described in Patent Document 3 is made by applying anti-fraying treatments such as adhesive sewing, ultrasonic welding, piping of cut edges, and embedding with sealing tape to a woven fabric made of polyurethane fibers and other synthetic fibers. In other words, it is merely a conventional woven fabric that has been subjected to a known anti-fraying treatment, and the woven fabric itself does not have any anti-fraying properties. Furthermore, the narrow tape described in Patent Document 4 can be a component that can maintain elasticity and have anti-fraying functions as a component of clothing, but it is difficult to use it as the fabric that constitutes the entire garment.

Furthermore, in the heat-fusible composite yarn described in Patent Document 5, the polyurethane fiber core yarn is stretched at a specified stretch ratio to suppress the expansion and contraction of the composite yarn during weaving, thereby improving handleability and weaving properties. However, the heat-fusible composite yarn shown in Patent Document 5 is primarily intended to improve weaving properties and dimensional stability, and the woven fabric has not been considered in detail. In other words, sufficient knowledge has not been obtained about the structure of the fabric suitable for achieving the anti-fraying effect, the fineness of the core yarn and sheath yarn, and their ratio. As a result, there was a problem in that the anti-fraying effect of the cut edges could not be reliably achieved over the entire surface of the fabric.

In light of these circumstances, there has been a strong demand for a fabric that can eliminate the various problems associated with the conventional technology, has the function of preventing fraying of the cut edges of the entire woven fabric, can be used as clothing fabric without processing the cut areas, and is easy to manufacture and low-cost.

The present invention has been made in consideration of these problems, and aims to provide a fray-resistant fabric that has a uniform and simple structure throughout, and can be used as clothing fabric, etc., without processing the cut areas, by using yarns that satisfy specific conditions for the composition of the fabric and the yarns that form it.

In order to achieve the above object, the fray-preventing fabric according to the present invention comprises:
A fabric capable of preventing fraying of cut edges,
The weave is plain weave,
The warp and weft yarns of the fabric are made of composite yarns containing fusible stretch fibers and non-fusible fibers,
The fiber is characterized in that the CS value (Fm/Fn), which indicates the ratio of the fineness (Fm) of the fusible stretchable fiber to the fineness (Fn) of the non-fusible fiber, is 0.6 or more.

It is preferable that the warp density is 103 or more and the weft density is 94 or more.

It is preferable that the warp yarn and the weft yarn have the same structure and are composite yarns formed from the same fusible stretch fibers and non-fusible fibers.

It is preferable that both the warp and weft yarns of the composite yarn are made of air-blended yarn.

It is preferable that the composite yarn is a core-sheath type composite yarn, the core yarn of the core-sheath type composite yarn being made of the fusible stretch fiber, and the sheath yarn of the core-sheath type composite yarn being made of the non-fusible fiber.

It is preferable that the twist number of the sheath yarn relative to the core yarn in the core-sheath composite yarn is 350 T/M or more.

The fray-resistant fabric of the present invention has a plain weave structure, and the warp and weft threads that form the weave structure use composite yarns that contain fusible stretch fibers and non-fusible fibers and meet specific conditions. This makes it possible to provide a fray-resistant fabric that has a uniform and simple structure throughout the fabric, and can be used for clothing fabrics without processing the cut areas.

1 is a schematic plan view showing an enlarged portion of a fray-preventing fabric according to an embodiment of the present invention. FIG.

Below, we will explain in detail the form for implementing the anti-fraying fabric of the present invention (hereinafter referred to simply as "the present embodiment") with reference to the drawings.

The fray-resistant fabric according to this embodiment is a fabric that prevents fraying at the cut edges (cut edges) formed by cutting. In other words, even when the cut edges are left as they are after cutting without any sewing or other processing, the fabric has the characteristic that no fraying occurs at the cut edges no matter how many times it is washed after being used for fabric or the like.

Figure 1 is a schematic plan view showing an enlarged portion of the fray-resistant fabric according to the present embodiment. As shown in Figure 1, the fray-resistant fabric 10 according to the present embodiment is a plain weave fabric having the most basic and uniform structure, in which warp threads 11 and weft threads 12 are woven in a plain weave. In the prior art, simply using yarn containing fusible fibers in a plain weave fabric did not result in a fabric that did not fray at the cut edges. Therefore, attempts have been made to impart fray-resistant properties by using more complex weave structures such as twill weave, satin weave, double weave, and pile weave.

In response to this, the inventors have conducted extensive research and discovered that a plain weave fabric that does not fray at cut edges can be obtained by limiting the materials and configuration of the warp threads 11 and weft threads 12, and have thus completed the present invention. That is, the fray-resistant fabric 10 according to this embodiment is characterized in that the warp threads 11 and weft threads 12 are made of composite yarns that contain fusible fibers and non-fusible fibers, and that, when the ratio (Fm/Fn) of the fineness Fm of the fusible fibers to the fineness Fn of the non-fusible fibers is taken as the "CS value," the CS value is 0.6 or more.

By setting the CS value (Fm/Fn) to 0.6 or more, the proportion of fusible fibers contained in the composite yarns constituting the warp yarns 11 and weft yarns 12 is maintained at a certain level or higher. Therefore, when the fraying prevention fabric 10 is subjected to a heat treatment such as heat setting, sufficient fusion occurs due to the fusible fibers, and the composite yarns are reliably fused to each other. Then, the warp yarns 11 and the weft yarns 12 are uniformly adhered to each other at their intersections over the entire surface of the fraying prevention fabric 10. As a result, no matter where the fraying prevention fabric 10 is cut, the warp yarns 11 and the weft yarns 12 are in close contact at the edges, so that the fabric does not fray even if a process such as washing is performed after cutting. In this way, the fraying prevention fabric 10 makes use of the simple structure of the plain weave fabric shown in FIG. 1, and can easily obtain a uniform fraying prevention characteristic over the entire surface, which was difficult to achieve with a complex weave structure.

A composite yarn containing a fusible fiber and a non-fusible fiber may be a composite yarn of any structure, such as a yarn in which these two types of fibers are combined in a parallel state, a core-sheath type yarn in which one fiber is covered with the other fiber, an air-entangled yarn in which one fiber is blown onto the other fiber, or a ply-twisted yarn in which two types of fibers are twisted together. Furthermore, as a core-sheath type composite yarn, a covering yarn in which a sheath yarn is wrapped around a core yarn, a composite fiber in which the material polymers of two types of fibers are extruded concentrically and spun, etc. can be used. The composite yarn in this embodiment is preferably a core-sheath type yarn or an air-entangled yarn.

Various fibers can be used for the fusible and non-fusible fibers contained in the composite yarn according to this embodiment. For the fusible fibers, fibers made of polyester resins having thermal fusibility, particularly low melting point polyester fibers, low melting point nylon fibers, polyurethane fibers which are elastic fibers, etc. can be used. For the fusible fibers according to this embodiment, it is preferable to use polyurethane fibers. Polyurethane fibers can be manufactured by known methods, and commercially available products include Mobyron (registered trademark) manufactured by Nisshinbo Textile Inc. and Roica (registered trademark) manufactured by Asahi Kasei Corporation.

On the other hand, unlike fusible fibers, non-fusible fibers are not limited to synthetic fibers. As non-fusible fibers, chemical fibers such as regenerated fibers, semi-synthetic fibers, synthetic fibers, and inorganic fibers can be used. Regenerated fibers include rayon, cupra, lyocell, and polynosic, while semi-regenerated fibers include acetate and promix. Synthetic fibers include a wide variety of fibers, including polyamide fibers such as nylon, polyester fibers, acrylic fibers, and polypropylene fibers. Inorganic fibers include metal fibers such as glass fibers, fluorine fibers, carbon fibers, and stainless steel fibers.

In addition to chemical fibers, natural fibers such as vegetable fibers, animal fibers, and mineral fibers can also be used. Vegetable fibers include cotton, hemp, flax, and kenaf, while animal fibers include wool, cashmere, feathers, and silk. Of these fibers, synthetic fibers are preferred as the non-fusible fibers that make up the composite yarn of this embodiment from the standpoints of durability, versatility, and cost.

Synthetic fibers used for the non-fusible fibers are not particularly limited, but examples include polyester fibers made of aromatic polyester resins such as polyethylene terephthalate and aliphatic polyester resins such as polylactic acid, polyamide fibers such as nylon 6, nylon 6,6 and bionylon, polyolefin fibers such as polypropylene and polyethylene, acrylic fibers, polyvinyl alcohol fibers, polyvinyl chloride fibers, etc.

Among these synthetic fibers, polyester fibers such as polyethylene terephthalate, polyamide fibers such as nylon 6, and polypropylene fibers are preferred from the viewpoints of versatility and durability. In particular, polyamide and polyester fibers are preferred from the viewpoints of strength, durability, processability, and cost. The cross-sectional shape of the synthetic fiber is not particularly limited, and it may be a normal synthetic fiber having a circular cross section, or a synthetic fiber having an irregular cross section other than a circular cross section. Examples of the cross-sectional shape of the irregular cross section fiber include a square, polygonal, triangular, hollow, flat, multi-lobed, dog-bone, T-shaped, V-shaped, etc.

From the perspective of reducing the environmental burden, it is also preferable to use recycled fibers made by reusing leftover PET bottles and film, fibers made from plant-derived materials such as bio-nylon and bio-polyester, and dyed fibers that are colored by kneading pigments into the yarn at the yarn stage to avoid producing wastewater from dyeing. In addition to synthetic fibers, cotton, a plant fiber, and glass fiber, an inorganic fiber, can also be used suitably as non-fusible fibers.

The fusible fibers and non-fusible fibers contained in the composite yarn of this embodiment are preferably long fibers, i.e., filament yarns. The filament yarns may be monofilament yarns or multifilament yarns, but from the viewpoint of the flexibility of the woven fabric, etc., multifilament yarns are preferable. The fineness of the fusible fibers and non-fusible fibers (the thickness of the multifilament yarn in the case of multifilament yarns) is preferably 22 dtex or more for the fusible fibers and 13 dtex or more for the non-fusible fibers.

When the composite yarn according to the present embodiment is an air-entangled yarn, the fineness of the fusible fiber may be more than 78 dtex and 110 dtex or more, and the fineness of the non-fusible fiber may be more than 78 dtex and 167 dtex or more. Since the fraying prevention properties can be maintained even if the fineness of the fusible fiber and non-fusible fiber is increased in this way, when using fusible fiber and non-fusible fiber with large fineness, it is preferable that both the warp and weft of the composite yarn are made of air-entangled yarn.

It is also preferable that the composite yarn according to the present embodiment is a sheath-core composite yarn, in which the core yarn of the sheath-core composite yarn is made of a fusible stretch fiber, and the sheath yarn of the sheath-core composite yarn is made of a non-fusible fiber. When the composite yarn is a sheath-core type with a fusible fiber as the core yarn and a non-fusible fiber as the sheath yarn, it is more preferable that the fineness of the fusible fiber is 22 dtex or more and 78 dtex or less, and the fineness of the non-fusible fiber is 13 dtex or more and less than 84 dtex.

Here, when the fineness of the core yarn and the sheath yarn is small, if the fineness of the core yarn is too large compared to the fineness of the sheath yarn, it is considered that the elasticity of the core yarn will affect the entire composite yarn. In other words, if the fineness of the core yarn and the sheath yarn is small, the entire composite yarn will also be thin, and there is a possibility that the elasticity will be too large to maintain the shape of the plain weave fabric. In such a case, from the viewpoint of ensuring the strength of the plain weave fabric, it is preferable not to make the fineness Fm of the core yarn, which is an elastic fiber, too large compared to the fineness Fn of the sheath yarn. In other words, as described later, in some cases, it is preferable not only to set the lower limit of the CS value (Fm/Fn) to 0.6, but also to set an upper limit for the CS value.

In a core-sheath composite yarn, the draft ratio of the core yarn (the elongation of the core yarn when the sheath yarn is wrapped around it) when covering and combining the core yarn with the sheath yarn may be any draft ratio appropriate for the application of the fray-resistant fabric, and is generally between 2.0 and 4.0. The number of twists when wrapping the sheath yarn around the core yarn may also be any number appropriate for the application, but in the composite yarn of this embodiment, the number of twists is preferably 350 T/M or more.

The fray-preventing fabric according to this embodiment is a plain weave fabric with a single-layer structure, and therefore, in order to ensure strength, the weave density is required to have a warp density (the number of weft threads per unit length along the warp direction) and a weft density (the number of warp threads per unit length along the weft direction) of at least a certain value. It is preferable that the fray-preventing fabric according to this embodiment has a warp density, which is the number of weft threads per 10 mm in the warp direction, of 103 or more, and a weft density, which is the number of weft threads per 10 mm in the weft direction, of 94 or more.

Furthermore, in the fray-resistant fabric of this embodiment, it is preferable that the warp and weft threads are composite threads having the same structure and formed from the same fusible stretch fibers and non-fusible fibers. This makes use of the simple structure of the plain weave fabric, making the warp and weft structures of the fray-resistant fabric the same, and achieving the same adhesion at all intersections of the warp and weft threads. As a result, the fray-resistant fabric has more uniform strength over its entire surface, and the edges have high adhesion no matter where it is cut, resulting in a fabric that does not fray.

Next, the present invention will be described in more detail with reference to examples, but the present invention is not limited to these examples.

Eight types of fray prevention fabrics according to the present embodiment were produced, from Examples 1 to 8, and were subjected to washing tests according to the method described below to evaluate the fray prevention properties. In addition, for comparison with these Examples, two types of fabrics were produced as Comparative Examples, and their properties were evaluated in the same manner. The numerical values showing the configurations of the Examples and Comparative Examples were calculated as follows.

[1] Ratio of the fineness of the fusible stretch fiber to the non-fusible fiber: CS value (Fm/Fn)
The CS value was calculated by the following formula using the fineness Fm of the fusible stretch fiber and the fineness Fn of the non-fusible fiber in the composite yarn used to weave the fray-resistant fabrics of Examples 1 to 8 and the fabrics of Comparative Examples 1 and 2.
CS value = Fm ÷ Fn

[2] Warp density For the woven fabric, the number of wefts per 10 mm was counted along the warp direction of the fabric. The number of wefts was counted at multiple different points on the fabric, and the average value was taken as the warp density.

[3] Weft density For the woven fabric, the number of warp threads per 10 mm in the weft direction of the fabric was counted. The number of warp threads was counted at multiple different points on the fabric, and the average value was taken as the weft density.

[4] Number of twists (T/M)
For the fray-resistant fabrics of Examples 1 to 7, which used core-sheath composite yarn as the composite yarn, and the fabrics of Comparative Examples 1 and 2, the number of windings of the sheath yarn per meter of the core yarn when covering the core yarn with the sheath yarn was shown as the number of twists.

[5] Washing test (measurement of anti-fraying properties of cut edges against washing)
The washing test in this embodiment was carried out in accordance with the 4N method of a standard washing machine of type C specified in the "Home washing test method for textile products" specified in JIS L 1930. Note that JIS L 1930 corresponds to ISO 6330 (2012).

First, before conducting the test, the laundry was washed in accordance with JIS L 1930. A standard C-type washing machine as specified in JIS L 1930 was used. The washing machine was washed by performing the rinse and spin cycle at least once each without adding any test specimens or detergent. The washing conditions were set to be the same as those used when evaluating the test specimens. After that, the test specimens and detergent were added and the laundry was washed in accordance with the JIS L 1930 C4N method.

[6] Evaluation of fraying prevention properties After washing, each test specimen was taken out and the edge of the test specimen was visually observed. Then, the degree of fraying on the edge of the test specimen was evaluated on a 10-point scale from "1" for no fraying to "10" for severe fraying, with "7" or less being evaluated as passing. That is, the evaluation criteria for fraying prevention properties are as follows.
[Good] (Pass) Has extremely excellent fraying prevention properties [Poor] (Fail) Fraying occurs in the same way as with conventional woven fabrics

[Example 1]
In order to weave the fray-resistant fabric of Example 1, a polyurethane yarn (Mobyron (registered trademark) manufactured by Nisshinbo Textile Inc.) was used as a fusible stretch fiber for the core yarn, and a nylon yarn was used as a non-fusible fiber for the sheath yarn, and a core-sheath type composite yarn was produced by covering processing. The fineness (Fm) of the core yarn was 22 dtex, the fineness (Fn) of the sheath yarn was 13 dtex, and the CS value (Fm/Fn) was 1.692. The number of twists was 1200 T/M.

A plain weave fabric was woven using this core-sheath composite yarn for both the warp and weft. The warp density of the resulting plain weave fabric was 204 and the weft density was 178. This plain weave fabric was heat set at a set temperature of 180°C for 60 seconds and dyed at a dyeing temperature of 120°C to obtain the fray-resistant fabric of Example 1. The PU blend ratio of the resulting fabric was 42%. The physical properties and fray prevention properties of the fray-resistant fabric of Example 1 are shown in Table 1.

[Example 2]
The fray-resistant fabric of Example 2 was woven using the same core-sheath composite yarn as in Example 1. The difference from Example 1 was the weave density of the resulting plain weave fabric, with a warp density of 220 and a weft density of 219. This plain weave fabric was heat-set and dyed under the same conditions as in Example 1 to obtain the fray-resistant fabric of Example 2. The PU content of the resulting fabric was 42%. The physical properties and evaluation results of the fray prevention properties of the fray-resistant fabric of Example 2 are shown in Table 1.

[Example 3]
The fray-resistant fabric of Example 3 was woven with a core-sheath composite yarn made of the same material as in Example 1, that is, a covering yarn made of a polyurethane yarn for the core yarn and a nylon yarn for the sheath yarn. However, while the fineness of the core yarn was the same at 22 dtex, the fineness of the sheath yarn was 33 dtex, resulting in a CS value of 0.667. The number of twists was also different from that of Example 1, being 800 T/M.

A plain weave fabric was woven using this core-sheath composite yarn for both the warp and weft. The warp density of the resulting plain weave fabric was 186 and the weft density was 126. This plain weave fabric was heat set and dyed under the same conditions as in Example 1 to obtain the fray-resistant fabric of Example 3. The PU content of the resulting fabric was 23%. The physical properties and fray prevention properties of the fray-resistant fabric of Example 3 are shown in Table 1.

[Example 4]
The fray-resistant fabric of Example 4 was woven using the same core-sheath composite yarn as in Example 3. The difference from Example 3 was the weave density of the resulting plain weave fabric, with a warp density of 214 and a weft density of 147. This plain weave fabric was heat-set and dyed under the same conditions as in Example 1 to obtain the fray-resistant fabric of Example 4. The PU blend ratio of the resulting fabric was 23%. The physical properties and evaluation results of the fray prevention properties of the fray-resistant fabric of Example 4 are shown in Table 1.

[Example 5]
In the fray-resistant fabric of Example 5, a material different from that of Examples 1 to 4 was used for the sheath yarn constituting the core-sheath composite yarn. That is, a covering yarn was produced using a polyurethane yarn for the core yarn and a split ester yarn for the sheath yarn, and a plain weave fabric was woven with this core-sheath composite yarn. The fineness of the core yarn was 44 dtex, the fineness of the sheath yarn was 33 dtex, and the CS value was 1.333. The number of twists was also different from Examples 1 to 4, being 700 T/M.

A plain weave fabric was woven using this core-sheath composite yarn for both the warp and weft. The warp density of the resulting plain weave fabric was 103 and the weft density was 94. This plain weave fabric was heat set and dyed under the same conditions as in Examples 1 to 4 to obtain the fray-resistant fabric of Example 5. The PU content of the resulting fabric was 23%. The physical properties and fray prevention properties of the fray-resistant fabric of Example 5 are shown in Table 1.

[Example 6]
In the fray-resistant fabric of Example 6, a different material was used for the sheath yarn constituting the core-sheath composite yarn than in Examples 1 to 4. That is, a polyurethane yarn was used for the core yarn, and a nylon and polyester split yarn was used for the sheath yarn to prepare a covering yarn, and a plain weave fabric was woven with this core-sheath composite yarn. The fineness of the core yarn was 44 dtex, and the fineness of the sheath yarn was 56 dtex, resulting in a CS value of 0.786. Furthermore, the number of twists was 500 T/M, which was different from Examples 1 to 5.

A plain weave fabric was woven using this core-sheath composite yarn for both the warp and weft. The warp density of the resulting plain weave fabric was 185 and the weft density was 151. This plain weave fabric was heat set for 60 seconds, with only the set temperature changed to 190°C, and then dyed at a dyeing temperature of 120°C to obtain the fray-resistant fabric of Example 6. The PU blend ratio of the resulting fabric was 20%. The physical properties and evaluation results of the fray prevention properties of the fray-resistant fabric of Example 6 are shown in Table 1.

[Example 7]
The fray-resistant fabric of Example 7 was woven with a core-sheath composite yarn made of the same material as Examples 1 to 4, that is, a covering yarn made of a polyurethane yarn for the core yarn and a nylon yarn for the sheath yarn. However, the fineness of the core yarn was 78 dtex, and the fineness of the sheath yarn was also 78 dtex, resulting in a CS value of 1.0. The twist number was 500 T/M. The PU blend ratio of the obtained fabric was 25%.

A plain weave fabric was woven using this core-sheath composite yarn for both the warp and weft. The warp density of the resulting plain weave fabric was 121 and the weft density was 103. This plain weave fabric was heat set and dyed under the same conditions as in Examples 1 to 5 to obtain the fray-resistant fabric of Example 7. The physical properties and fray prevention properties of the fray-resistant fabric of Example 7 are shown in Table 1.

[Example 8]
In the fray-resistant fabric of Example 8, air-entangled composite yarn was used, unlike the core-sheath composite yarns of Examples 1 to 7. That is, air-entangled yarn was produced by blowing polyester yarn, a non-fusible fiber, onto polyurethane yarn, a fusible stretch fiber, with a high-speed airflow, and this air-entangled yarn was used to weave a fray-resistant fabric. The polyurethane yarn had a fineness of 110 dtex, the polyester yarn had a fineness of 167 dtex, and the CS value was 0.733. The PU blend ratio of the obtained fabric was 20%.

A plain weave fabric was woven using this core-sheath composite yarn for both the warp and weft. The warp density of the resulting plain weave fabric was 142 and the weft density was 102. This plain weave fabric was heat set and dyed under the same conditions as in Examples 1 to 5 and Example 7 to obtain the fray-resistant fabric of Example 8. The physical properties and fray prevention properties of the fray-resistant fabric of Example 8 are shown in Table 1.

To compare with the anti-fray fabrics of these examples, plain weave fabrics of Comparative Examples 1 and 2 were prepared.

(Comparative Example 1)
The fabric of Comparative Example 1 was woven with a core-sheath composite yarn made of the same material as that of Example 1, that is, a covering yarn using a polyurethane yarn for the core yarn and a nylon yarn for the sheath yarn. However, the fineness of the core yarn was the same at 22 dtex, but the fineness of the sheath yarn was 56 dtex. Therefore, the CS value was 0.393. The number of twists was 700 T/M.

A twill fabric was woven using this core-sheath composite yarn for both the warp and weft. The warp density of the resulting twill fabric was 177 and the weft density was 104. This twill fabric was heat set and dyed under the same conditions as in Examples 1 to 5 and Examples 7 and 8 to obtain the fabric of Comparative Example 1. The PU blend ratio of the resulting fabric was 20%. The physical properties and fray prevention properties of the fabric of Comparative Example 1 are shown in Table 1.

(Comparative Example 2)
The fabric of Comparative Example 2 was woven with a core-sheath composite yarn made of the same material as Comparative Example 1, that is, a covering yarn made of a polyurethane yarn for the core yarn and a nylon yarn for the sheath yarn. However, the fineness of the core yarn was 44 dtex and the fineness of the sheath yarn was 78 dtex. Therefore, the CS value was 0.564. The number of twists was 700 T/M.

A twill fabric was woven using this core-sheath composite yarn for both the warp and weft. The warp density of the resulting twill fabric was 138 and the weft density was 86. This twill fabric was heat set and dyed under the same conditions as in Examples 1 to 5 and Examples 7 and 8 to obtain the fabric of Comparative Example 2. The PU content of the resulting fabric was 13%. The physical properties and fray prevention properties of the fabric of Comparative Example 2 are shown in Table 1.

As shown in Table 1, in order to exhibit fray prevention properties, the weave structure of the woven fabric must be plain weave, and the CS value (Fm/Fn), which indicates the ratio of the fineness Fm of the fusible stretch fiber of the composite yarn constituting the plain weave fabric to the fineness Fn of the non-fusible fiber, must be 0.6 or more. In the examples shown in Table 1, the warp and weft yarns of such composite yarns have the same structure and are made of the same fusible stretch fiber and non-fusible fiber, so that the fray prevention properties are obtained more uniformly and reliably.

Furthermore, as shown in Table 1, for Examples 1 to 7 in which the composite yarn is a core-sheath type, it is preferable that the fineness of the core yarn is 22 dtex or more and 78 dtex or less, and that the fineness of the sheath yarn is 13 dtex or more and 78 dtex or less (less than 84 dtex). Here, when the fineness Fm of the core yarn and the fineness Fn of the sheath yarn are small as in Examples 1 to 7, it is preferable that the fineness Fm of the core yarn, which is an elastic fiber, is not made too large relative to the fineness Fn of the sheath yarn, from the viewpoint of ensuring the strength of the plain weave fabric, as described above.

That is, when the fineness of the core yarn and the sheath yarn is small, it is preferable to set the lower limit of the CS value (Fm/Fn) to 0.6 and the upper limit to a certain value. Specifically, for the finenesses shown in Examples 1 to 7, it is preferable that the CS value is less than 3.0. Furthermore, it is more preferable that the CS value is less than 2.0, and even more preferable that the CS value is less than 1.8.

On the other hand, in Example 8, in which the composite yarn is an air-entangled yarn, excellent fraying prevention properties are obtained even though the fineness of the core yarn is 110 dtex and the fineness of the sheath yarn is 167 dtex. The CS value is also 0.6 or more in Example 8. Note that, in Example 8, the CS value is also less than 3.0, less than 2.0, and less than 1.8.

The fray-resistant fabric of the present invention can be suitably used for a variety of applications in various fields where fabrics whose edges are formed by cutting are used, including fabrics for clothing that are tailored by cutting and sewing.

10 Anti-fraying fabric 11 Warp thread 12 Weft thread

Claims (5)

A fabric that can prevent fraying of the cut edges no matter where it is cut,
The weave is plain weave,
The warp and weft yarns of the fabric are made of composite yarns containing fusible stretch fibers and non-fusible fibers,
a CS value (Fm/Fn) indicating the ratio of the fineness (Fm) of the fusible stretchable fiber to the fineness (Fn) of the non-fusible fiber is 0.6 or more and 1.692 or less ;
The warp yarn and the weft yarn have the same structure and are composite yarns formed of the same fusible stretch fibers and non-fusible fibers,
A fray-resistant fabric, characterized in that the warp density, which is the number of weft threads per unit length along the warp direction of the plain weave, and the weft density, which is the number of warp threads per unit length along the weft direction of the plain weave, are uniform over the entire surface of the fabric. 2. The fray-resistant fabric according to claim 1 , wherein the composite yarn is a sheath-core composite yarn, the core yarn of the sheath-core composite yarn is made of the fusible stretch fiber, the sheath yarn of the sheath-core composite yarn is made of the non-fusible fiber, and the warp density, which is the number of weft yarns per 10 mm in the warp direction, is 103 or more and the weft density, which is the number of warp yarns per 10 mm in the weft direction, is 94 or more . 3. The fray-resistant fabric according to claim 2, characterized in that the fineness of the core yarn of the sheath-core composite yarn is 22 dtex or more and 78 dtex or less, the fineness of the sheath yarn is 13 dtex or more and less than 84 dtex, and the twist number of the sheath yarn to the core yarn in the sheath-core composite yarn is 350 T/M or more. 3. The fray-resistant fabric according to claim 2, characterized in that the fineness of the core yarn of the sheath-core composite yarn is 22 dtex or more and 78 dtex or less , the fineness of the sheath yarn is 13 dtex or more and 78 dtex or less, and the twist number of the sheath yarn to the core yarn in the sheath-core composite yarn is 500 T/M or more. The fray-resistant fabric according to claim 1, characterized in that the warp and weft yarns of the composite yarn are both air-mixed yarns (air-entangled yarns), the fineness of the fusible stretch fiber constituting the air-mixed yarns (air-entangled yarns) is 110 dtex or more, and the fineness of the non-fusible fiber is 167 dtex or more.

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