ES2809129T3 - Woven fabric - Google Patents

Abstract

A woven fabric comprising a warp and a weft, at least one of the warp and weft being at least partially a fiber (M) which is a monofilament 1, a fiber (N) being at least crossing the fiber (M) partially a multifilament 2, the woven fabric satisfying either of the following conditions (1) or (2): (1) monofilament 1 is fused to multifilament 2, and a multifilament coverage ratio a / L and a concealment ratio of monofilament h / b satisfy both formulas (A) and (B): 1,0 <= a / L <= 1,5 - - - (A) 0,5 <= h / b <= 1,0 - - - (B); or (2) monofilament 1 is not fused to multifilament 2, and the multifilament coverage ratio a / L and the monofilament concealment ratio h / b satisfy both formulas (C) and (D): 1.0 < = a / L <= 1.5 - - - (C) 0.7 <= h / b <= 1.0 - - - (D) where a, b, L and h each have the following meanings: a : length of the multifilament 2 in a cross section thereof in a woven fabric surface direction; b: length of the multifilament 2 in a cross section thereof in a woven fabric thickness direction; L: center-to-center distance between adjacent multifilament 2 filaments through the fiber (M); and h: gathering height of monofilament 1.

Description

DESCRIPTION

Woven fabric

The present invention relates to a woven fabric. More particularly, the present invention relates to a woven fabric which can be preferably used in shoes, work clothes, bags and the like, and which is excellent in abrasion resistance and tactile feeling.

Previous technique

Various types of fabrics have been proposed in which a warp and weft is at least partially a monofilament, and a fiber that crosses a fiber that includes the monofilament is at least partially a multifilament. For example, Patent Document 1 describes a mesh body that includes a polypropylene multifilament, such as a warp, and a polypropylene monofilament composed of a core sheath as a weft. The mesh body is obtained by melting the polypropylene monofilament composed of the core sheath with the sheath melting temperature set at a temperature higher than the core melting temperature, weaving the warp and weft, and heating the resulting to melt the polypropylene in the sheath section to fix the warp and weft together.

Furthermore, Patent Document 2 describes an abrasion resistant woven fabric for a leather material having a smooth texture, including a polytrimethylene terephthalate multifilament as the weft and a polytrimethylene terephthalate monofilament as the warp (Example 6 of the patent 3).

In addition to the above, Patent Document 3 proposes, as an improved fabric in abrasion resistance, a fabric that includes a fiber composed of core and sheath. The core-sheath composite fiber contains a polymer that forms a central section and a polymer in a sheath section, which has a lower melting point than the polymer in the core section, and the sheath section is thermofused to fix the fiber filaments together, so that the fabric is suppressed in case of slippage of the yarn.

Patent Document 4 proposes an elastic fabric, where a yarn of warp and weft yarns is obtained from an inelastic yarn that has a gathering ratio of 5 to 30% and at least part of the other is obtained from an elastic yarn. which has a gathering ratio of 0 to 5%. Example 1 refers to a woven fabric having a warp density of 25 pieces / 2.54 cm and a weft density of 47 pieces / 2.54 cm obtained from a monofilament weft yarn of 700 dtex and a yarn of 200 T / m twisted warp having a total fineness of 1670 dtex-288 filaments.

PREVIOUS TECHNIQUE DOCUMENTS

Patent Document 1: JP11-200178A

Patent Document 2: JP2002-201548A

Patent Document 3: JP2010-236116A and

Patent Document 4: EP2843091A.

Problems to be solved by the invention

Conventionally, in fabric products such as shoes, workwear, and bags, the fabrics are processed or laminated fabrics that have a coating of synthetic rubber or the like, or artificial leather coated with urethane or the like is worn on the cuffs, bumps, and corners that rub frequently to resist repeated friction. Either method has the problems that the resulting fabric product is thick and heavy, low air permeability, and poor tactile feel, and that the cost increases due to such processing. Therefore, a fabric which is excellent in abrasion resistance and tactile feel, and which also has lightweight properties and air permeability, has been desired.

Since the woven fabric described in Patent Document 1 is intended for construction work, Patent Document 1 does not consider the tactile feel of the woven fabric, and does not reveal any specific structure of a woven fabric good in tactile sensation.

Furthermore, although Patent Document 2 describes, about woven fabric for a skin material disclosed therein, physical properties of polytrimethylene terephthalate fiber and elastic recovery of fabric, the document does not mention any simple evaluation index in the actual fabric. It is impossible to obtain a woven fabric excellent in abrasion resistance and smooth texture by carrying out the disclosure of Patent Document 2 as it is.

In the fabric described in Patent Document 3, although yarn slippage is suppressed due to the fused and fixed fiber filaments crossing each other and the fabric improves abrasion resistance, the fabric has a poor hand feel as well. that the fused and solidified fiber filament comes into contact with another fiber filament that rubs on it.

An object of the present invention is to solve the aforementioned problems of conventional techniques, and to provide a woven fabric that is excellent in abrasion resistance against repeated slipping, good in feel, and is suitable for a fabric product.

Solutions to problems

A first invention that is made to solve the problems mentioned above is

a woven fabric that includes a warp and a weft,

at least one of the warp and weft being at least partially a fiber (M) that is a monofilament 1, a fiber (N) that crosses the fiber (M) is at least partially a multifilament 2,

the woven fabric satisfying either of the following conditions (1) or (2) (the first invention):

(1) monofilament 1 is fused to multifilament 2, and a multifilament coverage ratio a / L and a monofilament concealment ratio h / b satisfy both formulas (A) and (B):

1.0 <a / L <1.5 • • • (A)

0.5 <h / b <1.0 • • • (B);

or

(2) monofilament 1 is not fused to multifilament 2, and the multifilament coverage ratio a / L and the monofilament concealment ratio h / b satisfy both formulas (C) and (D):

1.0 <a / L <1.5 • • • (C)

0.7 <h / b <1.0 • • • (D)

where a, b, L, and h each have the following meanings:

a: length of the multifilament 2 in a cross section thereof in a woven fabric surface direction;

b: length of the multifilament 2 in a cross section thereof in a woven fabric thickness direction; L: center-to-center distance between adjacent multifilament 2 filaments through the fiber (M); and h: gathering height of monofilament 1.

In a more preferred aspect, in the woven fabric according to the first invention, the multifilament 2 has a coverage factor of 800 or more and 1200 or less (a second invention).

In another preferred aspect, in the fabric woven according to any of the aforementioned inventions, the multifilament 2 has a twist coefficient of 0 or more and 10,000 or less (a third invention).

In another preferred aspect, in the fabric woven according to any one of the above-mentioned inventions, the monofilament 1 has a flexural stiffness of 1 cN or more and 6 cN or less (a fourth invention).

In another preferred aspect, in fabric woven according to any one of the aforementioned inventions, monofilament 1 is a core-sheath composite yarn wherein a component of the sheath has a melting point that is at least 10 ° C lower than that of a core component (a fifth invention).

In another preferred aspect, the fabric woven according to any one of the inventions mentioned above, in the abrasion test according to JIS L1096 (2010) 8.19.3, method C, a reduction in weight after 4000 times less than 0.5 g, and no hole (a sixth invention).

In another preferred aspect, the fabric woven according to any one of the above-mentioned inventions has an average friction coefficient MIU as a surface friction property value KES of 0.10 to 0.42, and a deviation of the average friction coefficient MMD from 0.01 to 0.07 (a seventh invention).

Effects of the invention

According to the first invention, it is possible to achieve a state where the monofilament has the advantage of ensuring abrasion resistance and the multifilament has the advantage of ensuring that the touch feeling is properly arranged, and a woven fabric excellent in resistance to abrasion is provided. abrasion and feel to the touch. Furthermore, the monofilament and multifilament of the present invention are fused to satisfy the above-mentioned condition (1), or they are not fused together to satisfy the above-mentioned condition (2), so that the yarn slippage of the woven fabric is effectively suppressed, and the woven fabric is further improved in abrasion resistance. It is also possible to provide a woven fabric where the proper arrangement of warp and weft it is hardly affected, and it maintains a good feeling to the touch.

According to the second invention, a coverage factor of the multifilament within the specific range provides an appropriate bonding force between the warp and the weft, and maintains the wavy shape of the multifilament well. As a result, a woven fabric is provided which is excellent in lightweight properties and durability, and is also good in touch and air permeability.

According to the third invention, a torsion coefficient of the multifilament within the specific range easily provides a flat sectional shape of the multifilament and ensures a large contact area with the monofilament. As a result, a large number of individual yarns are in contact with the monofilament. Since the force applied to a single yarn is distributed, yarn breakage hardly occurs, and a woven fabric more excellent in abrasion resistance and good touch feeling is provided.

According to the fourth invention, a flexural stiffness of the monofilament within the specific range can suppress the occurrence of slippage of the yarn due to a low flexural stiffness of the monofilament. At the same time, it is possible to avoid yarn slippage due to insufficient yarn binding force, which is caused by the deterioration of the gathering shape that maintains performance due to excessively high flexural stiffness and to avoid the deterioration of strength. to abrasion due to a low hiding ratio of monofilament h / b.

According to the fifth invention, it is possible to easily provide a woven fabric excellent in abrasion resistance and tactile feel without the use of a fusing agent to fuse the warp and weft.

According to the sixth invention, it is possible to provide a woven fabric excellent in durability against friction in fabric products such as shoes, work clothes and bags.

According to the seventh invention, it is possible to provide a woven fabric having a smooth surface and a good tactile feeling in fabric products such as shoes, work clothes and bags.

As described above, since the woven fabric of the present invention is excellent in abrasion resistance and good tactile feeling, the woven fabric can be suitably used alone in wearable fabric products, such as shoes, work clothes, bags and personal cloth products. In addition, the application of the woven fabric is not limited to the above, and the woven fabric can be used in various fabric products for which abrasion resistance and soft tactile feeling are required, such as vehicle seat leather material.

Brief description of the drawings

Figure 1 is a schematic cross-sectional view of a woven fabric providing an outline of the measurement sites to obtain a multifilament cover ratio and a monofilament hide ratio.

Fig. 2 is a schematic cross-sectional view to illustrate the definitions of the length a of the multifilament in a cross section thereof in a woven fabric surface direction, and the length b of the multifilament in a cross section thereof in a direction. thick woven fabric, in the case where the woven fabric has a plain weave structure.

Figure 3 is a schematic cross-sectional view to illustrate the definitions of the length a of the multifilament in a cross section thereof in a woven fabric surface direction, and the length b of the multifilament in a cross section thereof in a direction. thick woven fabric, in the case the woven fabric has a 2/2 twill woven fabric structure.

Figure 4 is a schematic cross-sectional view to illustrate the definitions of the center-to-center distance L between adjacent filaments of the multifilament, and the gathering height h of the monofilament, in the case where the woven fabric has a plain weave structure. .

Figure 5 is a schematic cross-sectional view to illustrate the definitions of the center-to-center distance L between adjacent filaments of the multifilament, and the gathering height h of the monofilament, in the case where the woven fabric has a fabric structure. woven 2/2 twill.

Embodiments of the invention

Hereinafter, the present invention will be described in detail.

The woven fabric of the present invention is a woven fabric that includes a warp and a weft, at least one of the warp and the weft being at least partially a fiber (M) which is a monofilament 1, a fiber (N) being the fiber (M) crosses at least partially a multifilament 2, the woven fabric satisfying either of the following conditions (1) or (2):

(1) monofilament 1 is fused to multifilament 2, and a multifilament coverage ratio a / L and a monofilament concealment ratio h / b satisfy both formulas (A) and (B):

1.0 <a / L <1.5 • • • (A)

0.5 <h / b <1.0 • • • (B);

or

(2) monofilament 1 is not fused to multifilament 2, and the multifilament coverage ratio a / L and the monofilament concealment ratio h / b satisfy both formulas (C) and (D):

1.0 <a / L <1.5 • • • (C)

0.7 <h / b <1.0 • • • (D)

where a, b, L, and h each have the following meanings:

a: length of the multifilament 2 in a cross section thereof in a woven fabric surface direction;

b: length of the multifilament 2 in a cross section thereof in a woven fabric thickness direction; L: center-to-center distance between adjacent multifilament filaments through the fiber (M); and h: gathering height of the monofilament.

Detailed definitions of a, b, L, and h are as follows. The description will now be made with reference to Figures 1 to 5. Figure 1 is a schematic cross-sectional view of a woven fabric providing an outline of the measurement sites to obtain a multifilament coverage ratio and a ratio monofilament concealment. Figure 1 shows a cutting surface of the woven fabric that is obtained by cutting a multifilament 2, which crosses a fiber including a monofilament 1 included in a warp or a weft of the woven fabric, in a direction parallel to the longitudinal direction of the fiber including the monofilament 1.

Fig. 2 is a schematic cross-sectional view to illustrate the definitions of the length a of the multifilament 2 in a cross-section thereof in a woven fabric surface direction, and the length b of the multifilament 2 in a cross-section thereof in a woven fabric thickness direction, in the case where the woven fabric has a plain weave structure. The woven fabric is cut in the same direction as in Figure 1.

Figure 3 is a schematic cross-sectional view to illustrate the definitions of the length a of the multifilament 2 in a cross-section thereof in a woven fabric surface direction, and the length b of the multifilament 2 in a cross-section thereof in a woven fabric thickness direction, in the case that the woven fabric has a 2/2 twill woven fabric structure. The woven fabric is cut in the same direction as in Figure 1, although the fabric structure is different.

Figure 4 is a schematic cross-sectional view to illustrate the definitions of the center-to-center distance L between adjacent filaments of the multifilament, and the gathering height h of the monofilament 1, in the case where the woven fabric has a woven structure. smooth. The woven fabric is cut in the same direction as in Figure 1.

Figure 5 is a schematic cross-sectional view to illustrate the definitions of the center-to-center distance L between adjacent filaments of the multifilament, and the gathering height h of the monofilament, in the case where the woven fabric has a fabric structure. woven 2/2 twill. The woven fabric is cut in the same direction as in Figure 3.

First, the lengths a and b will be described.

See Figures 2 and 3. A rectangle is simulated, which surrounds a cross section of a filament of multifilament 2, two parallel sides of which are in contact with the cross section of the filament of multifilament 2, and the other two parallel sides meet in the direction of the thickness of the multifilament 2 and a direction perpendicular thereto (ie, the woven fabric surface direction). The length of the side along the woven fabric surface direction is defined as the length a of the multifilament 2 in a cross section thereof in the woven fabric surface direction, and the length of the side along the direction perpendicular to the woven fabric surface direction is defined as the length b of the multifilament 2 in a cross section thereof in the woven fabric thickness direction.

Later, L.

See Figures 4 and 5. In a monofilament 1 filament in contact with the multifilament in the thickness direction, a distance between two adjacent gather vertices C1 and C2 is defined as 2 * L, and a length of the middle of 2 * L is defined as the center-to-center distance L between adjacent filaments of the multifilament.

Finally, h will be described.

See Figures 4 and 5. A rectangle is formed with a top side that is the line of distance 2L between the adjacent crimp vertices C1 and C2 of a monofilament filament, and a line that is parallel to the top side and is at contact with the bottom B of a multifilament (a point where the multifilament is in contact with the monofilament in the direction of the thickness of woven fabric). The height of the rectangle (the length of the side of the rectangle near the thickness direction) is defined as the gathering height h of the monofilament.

As described above, the woven fabric of the present invention includes a warp and a weft, at least one of the warp and the weft is at least partially a fiber (M) including a monofilament 1, and a fiber (N) The fiber crossover (M) includes at least partially a multifilament 2. In particular, it is preferred that a fiber of either warp and weft is substantially a monofilament, and a fiber that crosses the aforementioned fiber is substantially a multifilament. The term "substantially" means that a small amount of other fibers can be used in combination for design and other reasons. For example, up to 20% by mass, or up to 10% by mass of other fibers can be used in combination. That is, it is preferred that the fiber (M) includes 80% by mass or more, more preferably 90% by mass or more of the monofilament 1. Furthermore, it is preferred that the fiber (N) includes 80% by mass or more, more preferably 90% by mass or more of the multifilament 2.

A multifilament is a bundle made of a plurality of fiber filaments. Since a multifilament has a single yarn diameter that is smaller than the total fineness, a multifilament exposed to the woven fabric surface can give a soft tactile sensation when brought into contact with the skin. The single yarn of the multifilament, however, breaks easily due to abrasion. On the other hand, a monofilament is made of a single fiber strand, has a large single yarn diameter, and hardly deforms into fiber diameter even when shredded. Therefore, a monofilament exposed to the woven fabric surface tends to give a hard and rough surface texture when touched, but hardly breaks due to abrasion. The present invention provides a woven fabric having abrasion resistance against repeated friction and soft touch feeling by using fibers having these contradictory properties, adopting the parameters of monofilament concealment ratio and multifilament covering ratio, and optimization of both parameters.

In the woven fabric of the present invention, when the multifilament coverage ratio a / L is 1.0 or more and 1.5 or less and the monofilament is fused with the multifilament, the monofilament concealment ratio h / b is 0.5 or more and 1.0 or less.

The multifilament coverage ratio a / L represents the exposure ratio between the multifilament and the monofilament on the woven fabric surface. Since a monofilament has a large single thread diameter and hardly deforms to the fiber diameter when it comes into contact with the skin, a monofilament tends to give a hard, rough surface texture when touched. When a / L is within the above-mentioned range, the surface of the woven fabric is covered with the multifilament 2 which has a small diameter of single yarn and a smooth touch feeling, the exposed monofilament area 1 is reduced, and it can be obtained a soft touch feeling. If a / L is less than 1.0, the monofilament 1 contacts the skin too strongly, so the woven fabric tends to be poor in touch. On the other hand, if a / L is more than 1.5, the worn surface cannot be supported by the shirred apex portions of the monofilament 1, and many individual yarns of the multifilament 2 are worn, so that the woven fabric it tends to be poor in abrasion resistance. a / L is preferably 1.2 to 1.4.

The monofilament concealment ratio h / b represents the exposure height ratio between the multifilament 2 and the monofilament 1 in the woven fabric thickness direction. Since the multifilament 2 has a small single yarn diameter and breaks easily due to abrasion, if b is much larger than h, the woven fabric tends to be poor in abrasion resistance. When h / b is within the aforementioned range, the worn surface is supported by the shirred apex portions of the tough monofilament 1, the multifilament 2 is hidden in the valleys of the monofilament 1, and the multifilament 2 is protected from the abrasion. As a result, the fabric is excellent in abrasion resistance. When the surface of a woven fabric is rubbed, the diameter of the fiber bundle shape of the multifilament 2 is somewhat crushed by the friction load. Therefore, when h / b is within the aforementioned range, even if b is greater than h, it is possible to impart sufficient abrasion resistance and a soft touch to the fabric. When the monofilament 1 is fused with the multifilament 2, if h / b is less than 0.5, the worn surface cannot be supported by the shirred apex portions of the monofilament, and many individual yarns of the multifilament 2 are worn, so that woven fabric tends to be poor in abrasion resistance. On the other hand, if h / b exceeds 1.0, the monofilament 1 contacts the skin too strongly, so the woven fabric is poor in touch. Thus, when monofilament 1 is fused with multifilament 2, h / b is within the range of 0.5 to 1.0. h / b is preferably 0.7 to 0.9.

The multifilament a / L coverage ratio and the monofilament h / b concealment ratio can be adjusted within specific ranges by adjusting the degree of gathering by adjusting and weaving the filaments and post-weaving thermal processing conditions. Regarding the filaments, the material, intrinsic viscosity, fineness, stretching ratio, stretching temperature, relaxation ratio, relaxation temperature, cross-sectional shape, weave density and flexural stiffness of the monofilament and the material, coefficient of twist, fineness , tissue density and flexural stiffness of the multifilament are adjusted. In knitting, warp tension and weft tension are adjusted. In heat setting, the longitudinal shrinkage ratio and the transverse shrinkage ratio are adjusted.

Furthermore, when monofilament 1 is not fused with multifilament 2, the bonding force of multifilament 2 is weaker than in the case where monofilament 1 fuses with multifilament 2, and many individual strands of multifilament 2 wear out during the touch. Therefore, this case is disadvantageous in terms of abrasion resistance. Therefore, in addition to the multifilament a / L coverage ratio of 1.0 or more and 1.5 or less, the monofilament h / b concealment ratio is set to 0.7 or more and 1.0 or less. to avoid too small a hiding ratio. The monofilament hiding ratio is preferably 0.8 to 0.9.

In the present invention, the warp or weft including the multifilament preferably has a coverage factor of 800 or more and 1200 or less, more preferably 1000 or more and 1200 or less. In this document, the coverage factor is a value calculated as follows.

(Coverage factor) = (density: number of threads / 2.54 cm) x V (fineness: dtex)

If the coverage factor of multifilament is small, the bonding force between the warp and the weft is insufficient, the yarn slip occurs during abrasion, and the desired durability is hardly obtained. On the other hand, if the multifilament coverage factor is too large, the gathering shape of the monofilament tends to be flat, and as a result, the desired durability is hardly obtained.

In the present invention, the material of the multifilament is not particularly limited, and polyethylene terephthalate, polybutylene terephthalate, polypropylene terephthalate, polyamides, polypropylene, polyethylene, polyphenylene sulfide, acrylic and the like can be suitably used as the base polymer. In particular, polyethylene terephthalate (PET) can be suitably used as the base polymer from the point of view of strength. If necessary, the base polymer can be used after being modified, for example, in the form of a copolymer with other components, or a composition containing other components. For example, a cation dyeable polyester capable of being dyed with a cationic dye, which is obtained by introducing a sulfonic acid group into PET or the like, is suitable as it provides a multifilament excellent in strength and coloring properties. A suitable commercial product of such a cation dyeable polyester yarn is, for example, LOCII manufactured by TORAY INDUSTRIES, INC.

The multifilament used in the present invention may include a braided yarn, a false braided yarn, a Taslan textured yarn, or an air textured yarn as long as the objective of the present invention is not affected. However, when using a bulky multifilament that includes a Taslan textured yarn or an air textured yarn, care must be taken because the multifilament may be poor in abrasion resistance due to too long a length b of the multifilament in a cross section of the same in the direction of thickness of woven fabric. Furthermore, apart from textured yarns, additives such as flame retardants, an antistatic agent, a weathering agent, a pigment, and a matting agent can be mixed with other materials. A previously dyed yarn that has been dyed beforehand can also be used as a multifilament.

The individual yarn fineness of the multifilament is desirably 1 dtex or more and 10 dtex or less, more desirably 2 dtex or more and 6 dtex or less. When the fineness of single multifilament yarn is 1 dtex or more, the required flexural stiffness is easily ensured, and the gathering shape of one of the yarns is easily formed. When the multifilament single yarn fineness is 10 dtex or less, the multifilament has hardly any stiff touch feeling and a smooth texture is easily obtained.

The total fineness of multifilament is desirably 100 dtex or more and 2000 dtex or less, more desirably 150 dtex or more and 1700 dtex or less, even more desirably 300 dtex or more and 1000 dtex or less. When the total fineness of multifilament is 100 dtex or more, the required flexural stiffness is easily guaranteed. When the total fineness of multifilament is 2000 dtex or less, the handling in the production of woven fabrics is easy.

A fiber yarn having a multifilament strength of 3.0 cN / dtex or more is preferably used from the viewpoint of the strength of the woven fabric. The strength condition is preferably high strength, and a fiber yarn having a strength within the range of 5.0 cN / dtex or more and 15.0 cN / dtex or less is practically more preferable.

In the present invention, the multifilament preferably has a twist coefficient of 0 or more and 10,000 or less and is in a weakly twisted state, more preferably it has a twist coefficient of 0 or more and 8500 or less. Herein, torque coefficient is obtained by the following formula.

(Torsion coefficient) = (number of turns: T / m) x V (fineness: dtex)

A multifilament torsion coefficient within the aforementioned range gives a multifilament having a flat cross-sectional shape. The multifilament has a large contact area with the monofilament that crosses the multifilament, and a large number of individual threads are in contact with the monofilament. As a result, the force applied to the individual yarns of the multifilament is distributed, so that hardly any yarn breakage occurs and the multifilament tends to improve abrasion resistance. In addition, the multifilament a / L coverage ratio is large and the woven fabric is good to the touch. On the contrary, if the twist coefficient of multifilament is higher than 10000, the range of yarns that can come into contact with the monofilament is narrow, and the number of individual yarns that do not come into contact with the monofilament is large, so that slippage of the yarn occurs easily and the multifilament tends to be poor in abrasion resistance.

When a woven fabric shows a weight reduction of less than 0.5 g and no hole in the abrasion test, it is preferable because the woven fabric has the desired durability, and a woven fabric with a long life can be provided to users. The weight reduction is more preferably less than 0.4 g. If the weight reduction exceeds 0.5g or a hole is generated in the abrasion test, the desired durability cannot be obtained. The abrasion test in this document is performed according to JIS L1096 (2010) 8,19,3, method C (JIS Handbook 2013) for 4000 times of abrasion with a Taber abrasion meter under conditions of a 250 g load, one wheel abrasive H-18 and a disc diameter of 100 mm.

The mean friction coefficient MIU as a surface friction property value KES represents the slip of the sample surface. The higher the value, the less slippery the surface is. The coefficient of friction deviation (MMD) represents the roughness and uneven texture of the sample surface. The higher the value, the rougher the surface. It is preferable that the woven fabric has an average friction coefficient MIU as a surface friction property value KES of 0.10 to 0.42, and a deviation of the average friction coefficient MMD of 0.01 to 0.07. More preferably, the woven fabric has an average coefficient of friction MIU of 0.20 to 0.40 and a deviation of the average coefficient of friction MMD of 0.02 to 0.065. Even more preferably, the woven fabric has an average coefficient of friction MIU of 0.25 to 0.38, and a deviation of the average coefficient of friction MMD of 0.025 to 0.060.

In the present invention, monofilament 1 preferably has a flexural stiffness of 1 cN or more and 6 cN or less. When the flexural stiffness of monofilament 1 is 1 cN or more, the monofilament plays a role of sea

In the present invention, the monofilament material is not particularly limited, and polyesters such as polyethylene terephthalate, polybutylene terephthalate, and polypropylene terephthalate, polyolefins such as polyamides, polypropylene and polyethylene, polyphenylene sulfide, polyester elastomers, polysulfur elastomers and polyurethane elastomers can suitably be used as the base polymer. However, when a material with low flexural stiffness is used as the base polymer to form a monofilament, it is easy to form a desired shirring shape even when using a thinner multifilament, and thus a thinner and lighter woven fabric can be obtained. . From that point of view, an elastic yarn made of an elastomer such as a polyester elastomer, a polysulfide elastomer, or a polyurethane elastomer as the base polymer can be used more suitably, and an elastic yarn made of a polyester elastomer as a polymer. base can be used even more properly.

As a polyester elastomer, one having a hard segment and a soft segment in the molecular structure is preferable. The hard segment preferably includes, as the main constituent unit, an aromatic polyester unit formed primarily from an aromatic dicarboxylic acid or an ester-forming derivative thereof and a diol or an ester-forming derivative thereof. Meanwhile, the soft segment preferably includes, as the main constituent unit, an aliphatic polyether unit and / or an aliphatic polyester unit and a diol.

In general, of filaments made from the same polymer, a filament having a lower fineness tends to have a lower flexural stiffness, and a multifilament tends to have a lower flexural stiffness than a monofilament if they have the same overall fineness. A filament that has a lower flexural stiffness tends to easily form puckers. In the present invention, from the viewpoint of maintaining a proper balance of gathers between the monofilament and the multifilament in a woven fabric to increase the bond strength of the yarn, and of controlling the exposure balance between the multifilament and the monofilament, the fineness range of the monofilament is preferably 0.2 times or more and 1.5 times or less, more preferably 0.3 times or more and 1.0 times or less, even more preferably 0.4 times or more and 0, 8 times or less the total fineness of the multifilament. When the fineness of the monofilament is 0.2 times or more of the total fineness of the multifilament, the multifilament easily kinks due to the stiffness and tension of the monofilament. When the fineness of the monofilament is 1.5 times or less than the total fineness of the multifilament, the monofilament easily kinks due to the stiffness and tension of the multifilament. As a result, the undulations of both yarns are easily formed in proper balance.

In one embodiment of the present invention, when the woven fabric is required to have air permeability, the warp and weft constituting the woven fabric are preferably fused to the extent that air permeability is not affected. When the warp and weft are fused, yarn slip barely occurs, and the woven fabric improves in abrasion resistance. However, fusing the surface layer of the multifilament is not preferable because the soft touch feeling tends to be affected.

Monofilament 1 can be a composite yarn such as a core-sheath composite yarn, or a non-composite yarn made entirely of a single material. In the case of fusing any of a warp and weft that is a monofilament with a multifilament used in at least a part of a warp or a weft that is not the monofilament, it is preferable that the monofilament is a core-sheath composite yarn. In this case, it is desirable that the material constituting the sheath component of the monofilament has a melting point that is at least 10 ° C lower than that of the material constituting the core component of the monofilament. Generally, it is desirable that the entire sheath section of the monofilament is fused with the other yarn. However, if the sheath component of the monofilament has a melting point lower than the melting point of the monofilament core component 10 ° C, when the heat setting temperature exceeds the melting point of the core component, the core component also melts during heat setting, and strength or fused portion may decrease. It should be noted that the monofilament which is the aforementioned core-sheath composite yarn or a non-composite yarn can also be used when the yarns are not fused to each other.

When the monofilament has a core-sheath structure, the materials of the core component and the sheath component can be of the same type or different from each other. However, it is preferable that the core component and the sheath component contain the same component, and it is more preferable that the core component and the sheath component are made of the same component, from the viewpoint of improving adhesion between the core component and the sheath component. In particular, it is more preferred that each core component and the sheath component are a copolymer composed of a plurality of constituent components including common constituent components, and that the core component and the sheath component are different in melting point. due to different proportions of composition or the like to the plurality of constituent components.

In particular, it is more preferred from the point of view of heat setting adhesion and yarn strength to employ a core-sheath composite fiber having a core component made of a polyester elastomer having a melting point of 190 to 250 °. C and a sheath component made of a polyester elastomer having a melting point of 140 to 190 ° C.

The basis weight of the woven fabric of the present invention is desirably within the range of 100 to 500 g / m2, more desirably 100 to 300 g / m2, even more desirably 100 to 200 g / m2. When the basis weight is 100 g / m2 or more, the required durability is easily obtained. On the other hand, when the basis weight is 500 g / m2 or less, the advantages of light weight are easily obtained.

The woven fabric of the present invention can basically be produced by an ordinary method including, for example, 1) twisting a multifilament, 2) weaving, and 3) heat treatment.

Although an effect occurs even without heat treatment, it is more desirable to perform heat treatment to fuse one of the yarns to the multifilament. When the woven fabric of the present invention is produced using a monofilament having a core-sheath structure wherein the sheath section has a melting point that is at least 10 ° C lower than that of the core section, it is preferable that the heat treatment temperature is higher than the melting point of the cladding section and lower than the melting point of the core section. The heat treatment can be carried out at a temperature of 150 to 220 ° C for 30 to 120 seconds, for example.

In an embodiment of the present invention, the woven fabric structure can be appropriately selected according to the application of the structures such as a flat weave structure, a twill weave structure, a satin weave structure and a double weave structure combining these structures. The plain weave structure is preferred as the warp and weft are joined together at many points, and the woven fabric hardly causes the yarn to slip. The flat-weave structure is also good in handling properties, such as fraying prevention. Furthermore, the weaving method and the loom to be used are not particularly limited as long as the woven fabric of the present invention can be obtained, and they can be appropriately selected.

The weaving conditions to obtain the woven fabric within the range defined in the present invention depend on the properties of the fibers used. For example, when focusing on warp tension and weft tension, it is difficult to limit the tensions within specific ranges as they vary depending on the properties of the fibers used and the combination of the fibers. However, these stresses act on the fibers mutually, have an effect on the warp and weft gather shapes, and thus change the multifilament coverage ratio a / L and the monofilament concealment ratio h / b. When the warp tension is low or the weft tension is high, the warp gather tends to be small and the weft gather tends to be large. When the warp tension is high or the weft tension is low, the warp gather tends to be large and the weft gather tends to be small.

Since the longitudinal shrinkage ratio and the transverse shrinkage ratio in heat setting also vary depending on the properties of the fibers used and the combination thereof, it is difficult to limit the shrinkage ratios within specific ranges to produce the woven fabric of the present invention. These shrinkage ratios act mutually, have an effect on the warp and weft gather shapes, and thus change the multifilament coverage ratio a / L and the monofilament concealment ratio h / b. When the longitudinal shrinkage ratio is high or the transverse shrinkage ratio is low, the shirring of warp tends to be small and weft gather tends to be large. Alternatively, when the longitudinal shrinkage ratio is low or the transverse shrinkage ratio is high, the warp gathering tends to be large and the weft gathering tends to be small.

Therefore, in the selection of weaving conditions, the weaving conditions must be appropriately adjusted so that the gathering shapes of the weaving yarns fall within the ranges defined in the present invention in view of the properties of the fibers used and the combination of them.

The woven fabric of one embodiment of the present invention can be used in applications such as leather materials for shoes, work clothes, fabrics for bags, limbs such as vehicle seat members and leather materials for shoes, limbs for sports balls such such as soccer and volleyball balls, adhesive tapes, base fabrics for nonwovens, interior members, members for internal layers of vehicles and houses, and materials for civil engineering.

Examples

Next, the woven fabric of the present invention will be described with reference to examples. The methods for measuring the properties described in the examples are as follows.

1. Multifilament hedging relationship (hereinafter sometimes abbreviated "hedging relationship")

From a woven fabric, a fiber (N) including a multifilament 2 crossing a fiber (M) including a monofilament 1 was cut in a direction parallel to the fiber direction (M), and was used as an observation sample. The sample was attached to a sample holder without tension, and a magnified photograph was taken with a scanning electron microscope (SEM) at a magnification of 40. The length a (mm) of multifilament 2 crossing monofilament 1 in one section crosswise thereof in a woven fabric surface direction, and the center-to-center distance L (mm) between adjacent filaments of the multifilament were each measured at five positions. The multifilament coverage ratios (a / L) were determined according to the following formula, and their average was calculated (see figure 1).

Multifilament coverage ratio (a / L) = a L

a: length of multifilament 2 in a cross section thereof in a woven fabric surface direction L: center-to-center distance between adjacent multifilament 2 filaments through the fiber (M)

2. Monofilament concealment ratio (hereinafter sometimes abbreviated "concealment ratio")

A cut sample was prepared in the same manner as in the case of the multifilament cover ratio measurement. The sample was then attached to a sample holder without tension, and an enlarged photograph was taken with a scanning electron microscope (SEM) at a magnification of 40. The length b (mm) of the multifilament 2 in a cross section thereof in a woven fabric thickness direction, and the waviness height h (mm) of the monofilament were each measured at five positions. The multifilament coverage ratios (h / b) were determined according to the following formula, and their average was calculated (see figure 1).

Multifilament coverage ratio (h / b) = h b

b: length of multifilament 2 in a cross section thereof in a woven fabric thickness direction h: gathering height of monofilament 1

3. Tissue density

According to JIS L1096: 20108.6.1, method A, five different positions on the woven fabric surface were observed with a magnifying glass, the numbers of warps and wefts were counted in the 25.4 mm section, and their averages were calculated.

4. Fineness

According to JIS L1013: 20108.3.1, method B, fineness based on corrected mass was measured as fineness.

5. Coverage factor

The coverage factor was calculated according to the following formula:

coverage factor = (fabric density: number of threads / 2.54 cm) x V (fineness: dtex).

6. Torsion coefficient

According to JIS L1013: 20108.13.1, a sample was attached to a torque counter manufactured by Asano machine MFG.

Co. with a length between grips of 50 cm under an initial load of 2.94 mN x decitex screen, the number of turns was measured, and the number obtained was doubled to give the number of turns per meter. The torsion coefficient was calculated according to the following formula.

Torsion coefficient = (number of turns: T / m) x V (fineness: dtex)

7. Flexural stiffness of the monofilament

Under two stainless steel rods, each with a diameter of 2 mm placed horizontally at an interval of 10 mm, a monofilament cut to about 4 cm in length was placed, and a stainless steel J-hook having a a 1mm diameter in the monofilament in the center of the two stainless steel bars. The stainless steel hook was lifted at a speed of 50 mm / min with a universal tension and compression testing machine type TCM-200 manufactured by MinebeaMitsumi Inc., and the flexural stiffness was evaluated based on the maximum stress generated during the drag.

8. Whether the fiber was fused or not

A 10mm x 10mm sample was collected, and the front and back surfaces of the woven fabric surface were observed with a scanning electron microscope (SEM) at 100 magnification to determine whether the fiber was fused or not.

9. Taber abrasion test

According to JIS L1096: 20108.19.3, method C, a sample was scraped 4000 times with a Taber abrasion tester under conditions of 250g load, H-18 abrasive wheel and 100mm disc diameter, and then the sample was weighed . The difference in weight (g) from the weight before the test was taken as "weight reduction after 4000 times". For the breaking judgment of the sample piece, a sample without a hole was judged as A, and a sample with a hole was considered B. As an integral judgment of abrasion resistance, a sample that showed a reduction in weight after 4000 times less 0.5 g and no holes were considered acceptable, and others were considered rejectable.

10. Evaluation of surface friction sensation and coefficient of friction (MIU)

The measurement was performed 3 times for each of the two warp and weft directions with a KES-SE friction tester manufactured by KATO TECH CO., LTD. under conditions of test bench movement speed of 1.00 mm / sec, static friction load of 50 g, and piano wire of 10 mm square as abrasive material, and the average of the measured values was obtained. The formula to obtain the coefficient of friction (MIU) is as follows.

MIU = (1 / X) Ipdx (integration range: 0 to X)

| j: Friction force / force pressing the sample (50 gf)

x: Position on the sample surface

X: Movement distance (2 cm)

The coefficient of friction (MIU) represents the slip of the sample surface, and the higher the value, the less slippery the surface is. For the trial, a sample with MIU of 0.40 or less was judged A, a sample with MIU greater than 0.40 and 0.42 or less was judged B, and a sample with MIU greater than 0.42 was judged C .

11. Evaluation of surface friction sensation and coefficient of friction deviation (MMD)

The measurement was performed 3 times for each of the two warp and weft directions with a KESSE friction meter manufactured by KATO TECH CO., LTD. under conditions of test bench movement speed of 1.00 mm / sec, static friction load of 50 g, and piano wire of 10 mm square as abrasive material, and the average of the measured values was obtained. The formula to obtain the coefficient of friction deviation (MMD) is as follows.

MMD = (1 / X) I | j - j '| dx (integration range: 0 to X)

j: Friction force / force pressing the sample (50 gf)

x: Position on the sample surface

X: Movement distance (2 cm)

j ': Average of j

The coefficient of friction deviation (MMD) represents the roughness and uneven texture of the sample surface, and the higher the value, the rougher the surface. For the trial, a sample with MMD of 0.05 or less was judged A, a sample with MMD greater than 0.05 and 0.07 or less was judged B, and a sample with MMD greater than 0.07 was judged C .

12. Base weight

According to JIS L1096: 20108.3.2, method A, Three samples of 200 mm x 200 mm were collected, the absolute dry masses of the samples were measured, the masses per 1 m2 were calculated and their average was calculated.

(Examples 1 to 4 and Comparative Examples 1 to 4)

"Hytrel" (trademark) 6347 (melting point: 215 ° C) manufactured by DU PONT-TORAY CO., LTD., A thermoplastic polyester elastomer, was used as the core component and "Hytrel" (trademark) 4056 (melting point: 153 ° C) was used as the sheath component. The microgranules were dried, melted in separate extruders, weighed with a gear pump, poured into a composite pack, and fed to an extrusion machine. In this way, a 700 dtex monofilament elastic yarn having a core / sheath mass ratio of 70:30 was obtained. The elastic yarn had a flexural stiffness of 1.0 cN, and was used as the weft.

In addition, ten 167 dtex-48 filament cation dyeable polyester yarns (LOCII manufactured by TORAY INDUSTRIES, INC.) Were combined. The resulting 480 filament having a total fineness of 1670 dtex was twisted to have a warp twist coefficient as shown in Table 1. The resulting yarn was used as a warp. The plain weave fabric as shown in Table 1 was produced under tight weave conditions such as warp tension. The obtained woven fabric was heat treated with a pin tensioner at a temperature of 180 ° C for 1 minute with the same inlet and outlet widths and an overfeed rate of 0% in warp direction. Then, the woven fabric was dyed according to an ordinary cationic dyeing method. In all finished fabrics, the polyester elastomer as the sheath component adhered and solidified at the intersection of the warp and weft of the woven fabric. The warp density and the weft density of the finished fabrics are as shown in Table 1.

As shown in Tables 2 and 3, Examples 1 to 4 are different from each other in one of the numerical values of weft density and warp twist coefficient, but the coverage ratio and the concealment ratio were within the specific ranges, and the woven fabrics were excellent in abrasion resistance and had a soft touch feeling.

Furthermore, as shown in Tables 2 and 3, in Comparative Examples 1 to 4, the coverage ratio or the concealment ratio was not within the specific range, and the woven fabrics were unsuitable in abrasion resistance and feel. . Comparative Example 1 is an example of a case where the concealment ratio is too small. Although the obtained woven fabric had a soft touch feeling due to the flat warp shape and the high cover ratio, the fabric was low in hiding ratio and poor in abrasion resistance. Comparative Example 2 is an example of a case where the concealment ratio is too large. The monofilament was exposed to the surface, and the woven fabric had a hard touch feeling. In Comparative Example 3, since the coverage index was too small, the monofilament was exposed to the surface, and the woven fabric had a hard handfeel. Comparative Example 4 is also an example of a case where the hedging ratio is too small. The monofilament was exposed to the surface, and the woven fabric had a hard touch feeling although it was excellent in abrasion resistance.

(Example 5)

"Hytrel" (trade mark) 6347 (melting point: 215 ° C) manufactured by DU PONT-TORAY CO., LTD., A thermoplastic polyester elastomer, was prepared as a core component. Furthermore, "Hytrel" (trade mark) 4056 (melting point: 153 ° C) was prepared as a sheath component. The microgranules were dried, melted in separate extruders, weighed with a gear pump, poured into a composite pack, and fed to an extrusion machine. In this way, a 400 dtex monofilament elastic yarn having a core / sheath mass ratio of 70:30 was obtained. The elastic yarn had a flexural stiffness of 0.3 cN, and was used as the weft.

Five 167 dtex-48 filament cation dyeable polyester yarns (LOCII manufactured by TORAY INDUSTRIES, INC.) Were combined. The resulting filament 240 having a total fineness of 835 dtex was twisted to have a warp twist coefficient of 2890. The resulting yarn was used as a warp. The plain weave fabric as shown in Table 1 was produced under tight weave conditions such as warp tension. The obtained woven fabric was heat treated with a pin tensioner at a temperature of 180 ° C for 1 minute with the same inlet and outlet widths and an overfeed rate of 0% in warp direction. In the finished woven fabric, the polyester elastomer as the sheath component adhered and solidified at the intersection of the warp and weft of the woven fabric. The warp density and the weft density of the finished woven fabric are as shown in Table 1.

As shown in Tables 2 and 3, it was confirmed that in Example 5, the coverage ratio and the concealment ratio were within the specific ranges, and the woven fabric was excellent in abrasion resistance and had a tactile feel. gentle.

(Examples 6 to 8 and Comparative Examples 5 and 6)

Microgranules of "Hytrel" (trademark) 6347 (melting point: 215 ° C) manufactured by DU PONT-TORAY CO., LTD., A thermoplastic polyester elastomer, were dried. The microgranules were then melted in an extruder, weighed with a gear pump, poured into a composite pack, and fed to an extrusion machine. In this way, a 700 dtex monofilament elastic yarn was obtained. The elastic yarn was used as the weft. In addition, ten 167 dtex-48 filament cation dyeable polyester yarns (LOCII manufactured by TORAY INDUSTRIES, INC.) Were combined as warp. The resulting 480 filament having a total fineness of 1670 dtex was twisted to have a warp twist coefficient as shown in Table 1. The plain weave fabric as shown in Table 1 was produced under tight weaving conditions such like warp tension. The obtained woven fabric was heat treated with a pin tensioner at a temperature of 180 ° C for 1 minute with the same inlet and outlet widths and an overfeed rate of 0% in warp direction. Then, the woven fabric was dyed according to an ordinary cationic dyeing method. The warp density and weft density of the finished fabrics are as shown in Table 1. No fused portion was found in each of the yarns that make up the finished woven fabrics.

As shown in Tables 2 and 3, it was confirmed that in Examples 6 to 8, the coverage ratio and the concealment ratio were within the specific ranges, and the woven fabrics were excellent in abrasion resistance and had a soft touch feeling.

In Comparative Examples 5 and 6, since the woven fabrics had a low hiding ratio, they were poor in abrasion resistance.

(Comparative example 7)

"Hytrel" (trademark) 6347 (melting point: 215 ° C) manufactured by DU PONT-TORAY CO., LTD., A thermoplastic polyester elastomer, was used as the core component. "Hytrel" (trade mark) 4056 (melting point: 153 ° C) was used as the sheath component. The microgranules were dried, melted in separate extruders, weighed with a gear pump, poured into a composite pack, and fed to an extrusion machine. In this way, a 700 dtex monofilament elastic yarn having a core / sheath mass ratio of 70:30 was obtained. The elastic yarn had a flexural stiffness of 1.0 cN, and was used as the weft.

A 288 filament high strength polyester multifilament yarn (manufactured by TORAY INDUSTRIES, INC.) Made of polyethylene terephthalate and with a total fineness of 1670 dtex was twisted to have a warp strain coefficient as shown in Table 1 , and the resulting yarn was used. The plain weave fabric as shown in Table 1 was produced under tight knitting conditions, such as warp tension, and with a weft density of 33 yarns / 2.54 cm and a warp density of 25 yarns / 2 , 54 cm. The obtained woven fabric was heat treated with a pin tensioner at a temperature of 180 ° C for 2 minutes at the same inlet and outlet widths and overfeed rate of 0% in warp direction with the 20% overfeed woven fabric in only warp direction. In the finished woven fabric, the polyester elastomer as the sheath component adhered and solidified at the intersection of the warp and weft of the woven fabric. The warp density and the weft density of the finished woven fabric are as shown in Table 1.

In Comparative Example 7, since the cover index was too small and the concealment index was too large, the woven fabric was excellent in abrasion resistance but had a hard touch feeling.

[Table 1]

T l 1

continuation

[Table 2]

T l 2

[Table 3]

As shown in Tables 1 to 3, it is understood that the woven fabric of the present invention is good in abrasion resistance and tactile feeling.

DESCRIPTION OF THE REFERENCE SIGNS

1: Monofilament

2: Multifilament

a: Length of multifilament 2 in cross section thereof in the direction of woven fabric surface b: Length of multifilament 2 in cross section thereof in direction of woven fabric thickness

L: Center-to-center distance between adjacent multifilament 2 filaments through fiber (M) h: Monofilament 1 gathering height

B: Multifilament bottom

C1: Gathering vertex

C2: Gathering vertex

Claims (5)

1. A woven fabric comprising a warp and a weft, at least one of the warp and weft being at least partially a fiber (M) that is a monofilament 1, a fiber (N) that crosses the fiber (M) is at least partially a multifilament 2, the woven fabric satisfying either of the following conditions (1) or (2): (1) monofilament 1 is fused to multifilament 2, and a multifilament coverage ratio a / L and a monofilament concealment ratio h / b satisfy both formulas (A) and (B): 1.0 <a / L <1.5 • • • (A) 0.5 <h / b <1.0 • • • (B); or (2) monofilament 1 is not fused to multifilament 2, and the multifilament coverage ratio a / L and the monofilament concealment ratio h / b satisfy both formulas (C) and (D): 1.0 <a / L <1.5 • • • (C) 0.7 <h / b <1.0 • • • (D) where a, b, L, and h each have the following meanings: a: length of the multifilament 2 in a cross section thereof in a woven fabric surface direction; b: length of the multifilament 2 in a cross section thereof in a woven fabric thickness direction; L: center-to-center distance between adjacent multifilament 2 filaments through the fiber (M); and h: gathering height of monofilament 1. The woven fabric according to claim 1, wherein the multifilament 2 has a coverage factor of 800 or more and 1200 or less, calculated according to the following formula: coverage factor = (fabric density: number of threads / 2.54 cm) x V (fineness: dtex). The woven fabric according to any of claims 1 and 2, wherein the multifilament 2 has a twist coefficient of 0 or more and 10,000 or less, calculated according to the following formula: Torsion coefficient = (number of turns: T / m) x V (fineness: dtex). The woven fabric according to any one of claims 1 to 3, wherein the monofilament 1 has a flexural stiffness of 1 cN or more and 6 cN or less, when measured by the method used in the specification. The woven fabric according to any one of claims 1 to 4, wherein monofilament 1 is a core-sheath composite yarn wherein a sheath component has a melting point that is at least 10 ° C lower than that of a core component.