JP5833269B1 - Lightweight high density fabric with breathability - Google Patents

Abstract

An object of the present invention is to provide a lightweight high-density fabric composed of filament yarns with a gap that ensures adequate breathability to prevent stuffiness during sweating, but prevents such slippage and slippage caused by providing a gap in the filament fabric. A woven fabric is provided. A lightweight high density woven fabric having a cover factor of 1550 to 2300 and a basis weight of 15 to 55 g / m 2, wherein a pattern formed by a gap exists in the woven fabric, and the following (i) to (iv) ) Satisfying the following conditions: (i) The gap ratio is 0.5 to 14%; (ii) The distance between the gaps is 3.5 to 50 mm; (iii) The gap And (iv) the gaps are obtained by completely or partially dissolving and removing the easily soluble fibers interwoven with the hardly soluble fibers. thing. [Selection] Figure 5

Description

  The present invention uses a lightweight high-density fabric in which a gap is visually visible on the surface of the fabric while being moderately windproof by weaving at a high density, and a portion of the gap is made breathable. It relates to textile products. The fabric of the present invention is particularly suitable for use in outdoor wear, sportswear, casual wear, or sleeping bags.

  Apparel that is likely to sweat when active is sportswear; outdoor wear such as walking, hiking, trekking, mountain climbing, etc. Casual apparel such as shirts, pants, and blousons are examples of clothing that do not sweat as much.

  In general, sportswear and outdoor wear are required to be strong, light, windproof, water repellent and waterproof, heat-retaining, water-absorbing quick-drying, stretchable and other functional fabrics. Furthermore, with respect to abrasion resistance, sliding resistance, water repellency, waterproofness, moisture permeability, and the like, there is a demand for a woven fabric with stable durability that does not easily deteriorate even after repeated wearing or washing. For this reason, nylon and polyester filament yarns having excellent strength and dyeing fastness are generally used.

  For a lightweight down-proof fabric, a filament fabric having a fineness with almost no gap in the fabric is preferably used. For windbreakers that require good skin separation, and raincoats that require good permeability and adhesion to coatings and laminates, false-twisted yarns that are prone to uneven surfaces are preferred. Used. The spun yarn is a twisted yarn, and it is easy to obtain a woven fabric that is difficult to fold. However, the spun yarn is not suitable for a lightweight and durable fabric because of its low yarn strength, and is hardly used. Twisted yarn fabrics have the advantage that they are difficult to fold even at low density due to twisted yarns gathered by twisted yarns, but the fabric weight is increased due to the amount of twist shrinkage and processing shrinkage at the time of twisting, and even in high-density flat fabrics, Since there are too many gaps and the air permeability is too high, and the permeability of the resin to the fibers is hindered, the adhesiveness is poor, so they are rarely used for these applications.

  The down proof is a high-density fabric, and high multi yarn is used as a non-twisted yarn in order to obtain low air permeability. This is because when the yarn is twisted, the apparent fineness is reduced, and in the woven fabric having the same density as the untwisted yarn, space is increased in the woven fabric, the air permeability is increased, and the down-proof property is greatly reduced. High multi-twisted yarns are flexible and have a disadvantage that they easily move and soft when they are subjected to an external force when a multi-layer structure is formed in the woven fabric, but tend to be soft. Therefore, it is essential to increase the density of the down-proof fabric so that it does not fray due to repeated wearing or washing.

  Further, a high-density woven fabric that does not have a need for a windbreaker, casual shirt, pants, and blouson that requires only water repellency is required for false twisted yarn fabric. On the other hand, the coating material may be a non-twisted woven fabric so that there is no resin leakage, and the fibers are fixed by the resin and difficult to fray.

  However, in these applications, especially for windbreakers, in addition to the above functionality, if sweating, sweat quickly and evaporate to the outside, and at the same time quickly dissipate the temperature and humidity in the clothing, lowering the temperature and humidity in the clothing Comfort as such wear is required. Furthermore, after sweating and lowering the temperature and humidity in the clothes, it is necessary that the product has an appropriate windproof property so that the body does not get too cold.

  In outdoor wear that often carries a backpack, there is a lot of sweating, especially on the shoulders, back, and lower heels. There are many products in which a tricot mesh is sewn to these parts, particularly under the heel, in a windproof fabric to prevent sweating from sweating. The tricot mesh itself seems to be well-ventilated and cool to the eye, but it is not preferable because it has little wind-proofing effect and the body temperature is lowered too much after sweating. Therefore, the highly breathable product of the tricot mesh composite has low versatility.

  In the sleeping bag, when non-down non-woven fabrics are used, it is desired to eliminate stuffiness and quick-drying when sucking sweat, condensation, raindrops, etc., and the side is preferably a highly breathable fabric .

  From such a background, there is a demand for a fabric that has an appropriate windproof property so as not to cool the body excessively after the sweat is drawn, and an appropriate air permeability that can eliminate the stuffiness when sweating.

For example, the following patent documents can be cited as prior documents regarding the fabric having air permeability.
Patent Document 1 proposes a woven fabric having an air permeability of 1 to 50 cm ³ / cm ² · s using hygroscopic exothermic fibers. Since this fabric generates heat when sweating, it generates heat when it is desired to lower the body temperature instantaneously, causing discomfort and continuing to respond to changes in body temperature. In addition, the basis weight is 80 to 82 g / m ² in Examples and Comparative Examples, which is lacking in lightness.

Patent Document 2 proposes a fabric having partially different air permeability due to biting. However, the basis weight is as high as 240 to 260 g / m ² in Examples and Comparative Examples, and lacks in light weight.

Patent Document 3 proposes a down-proof fabric coated with a resin. In Comparative Example 3, there is a description of a woven fabric having an air permeability of 10.1 cm ³ / cm ² · s without coating, but the seam deviation is as bad as 4.4 mm.

A method for obtaining a watermark effect by biting (opal) using a modified polyester having a high alkali weight loss rate is widely known.
Patent Document 4 proposes to obtain a watermark pattern by removing a woven fabric made of a composite yarn using a combination of two or more kinds of polyester fibers having different alkali weight loss rates. In this woven fabric, polyester having a low alkali weight loss rate remains, and therefore, the air permeability is not ensured by the gap.

  Patent Document 5 proposes a method of obtaining a watermark pattern by subjecting a woven fabric containing two or more types of polyester fibers having different alkali weight loss rates. In particular, the embodiment describes a method of performing etching on a taffeta in which weft yarns are alternately woven with two 50d and 50d slow alkali reduction rates. However, the details of the physical properties of the woven fabric are unclear except that the watermark effect is obtained by eating. That is, there is no description about air permeability, fabric density, slip resistance, basis weight, tear strength, and use, and there is no interest in these. This fabric is relatively sensitive and often worn with women's clothing, a lining that is practical even with a relatively low slip resistance, and is suitable for bedding, but it can be worn against a backpack, back, rocks and branches. It is not suitable for sportswear or outdoor wear that is exposed to intense use conditions.

  Patent Document 6 proposes a feeding method using a normal pressure cationic dyeable modified polyester fiber. In Example 1 and Comparative Example 1, a 75 d polyester circular knitting, in Example 2 and Comparative Example 2, 40 to 50 d. A circular knitting using three kinds of materials is described. In particular, the object is to express the sharpness of the pattern and prevent the deterioration of polyurethane fibers, which are knitted materials. Although there is no description about the number of gauges, basis weight, and air permeability, it is easily imagined that it is knit, has high air permeability, and does not have appropriate windproof performance.

  Patent Document 7 is composed of two or more types of fibers, has a sense of sheerness due to extraction, a layer where the extraction portion is made of nylon fibers, a non-emission portion is mainly made of polyester fibers, and a layer made mainly of nylon fibers. The fabric comprised by these is proposed. In Examples and Comparative Examples, warp knitted reversible structures constituting a multilayer structure are described, and the thickness is 1 to 2 mm. Although there is no description of air permeability and basis weight, it is easily imagined that it is light in weight because it is a thick multilayer structure.

JP 2006-274493 A JP 2008-121157 A JP 2011-021309 A JP-A-5-263375 JP 55-90673 A JP 2000-282377 A Patent No. 5006792

  The present invention was devised in view of the current state of the prior art described above, and its purpose is to provide a lightweight high-density fabric composed of filament yarns with a moderate air permeability to prevent stuffiness during sweating. However, the present invention is to provide a woven fabric which prevents the slippage and slippage caused by providing a gap in the filament woven fabric, and a textile product using the woven fabric. Another object of the present invention is to provide a woven fabric having a visual gap effect that gives a impression of high coolness by making a gap.

  As a result of intensive studies to achieve the above object, the inventors of the present invention have provided a gap that gives appropriate air permeability in a lightweight high-density fabric having windproof properties, and then a gap ratio (gap size). And the distance between the gaps (pattern size) is defined in a specific range, and the structure on both sides of the gaps is made into a flattened structure, preventing the slippage and seam slippage caused by providing the gaps, It has been found that a lightweight high-density fabric having moderate air permeability and windproof properties can be provided. In addition, by interweaving hardly soluble fibers and easily soluble fibers, and by dissolving or removing only the easily soluble fibers entirely or partially, it has excellent cool sensation in gaps such as lattice patterns, stripe patterns, border patterns, etc. I found that a good visual design can be obtained.

This invention is completed based on said knowledge, and has the structure of the following (1)-( 4 ).
(1) A lightweight high density woven fabric having a cover factor of 1550 to 2300 and a basis weight of 15 to 55 g / m ² , wherein a pattern formed by a gap exists in the woven fabric, and the following (i) to ( iii ) ) Characterized by satisfying the following conditions:
(I) The clearance ratio is 0.5 to 14% in both circumstances ;
(Ii) The distance between the gaps is 3.5 to 50 mm in both circumstances ; and (iii) the structures on both sides of the gap are a flat structure .
(2) The woven fabric according to (1), wherein the air permeability is 2 to 40 cm ³ / cm ² · s, and the sliding resistance under a load of 117 N is 3 mm or less.
(3) A textile product selected from sportswear, outdoor wear, casual wear, or sleeping bag, wherein the textile according to (1) or (2) is used.
( 4 ) The production of the woven fabric according to (1) or (2), wherein the gap is obtained by completely or partially dissolving and removing the easily soluble fibers interwoven with the hardly soluble fibers. Method.

  According to the present invention, there is a gap excellent in slip resistance, and the gap enhances the visual effect as a handle, makes it difficult to stuffy even if sweating, and does not overcool after the body temperature falls It is possible to provide a lightweight, high-density woven fabric having wind resistance and wind resistance. Since the fabric of the present invention has such characteristics, it is extremely suitable for use in sportswear, outdoor wear, casual wear, and sleeping bag side land.

FIG. 1 is an image photograph of a fabric of an example of the present invention in which a portion partially having a gap due to pitting and a non-pitting portion are mixed, and the calculation method of the gap ratio is also shown. In FIG. 1, 1a is a non-eating portion (low air permeability portion), 1b is a eating portion (high air permeability portion), and 1c is a distance (pattern size) B between the gaps. The gap ratio of the present invention and the distance (pattern size) between the gaps are shown.

FIG. 2 is a diagram showing the structure at both ends of the gap portion in the heel tissue, (a) shows that the tissue after the dissolution becomes a heel structure and is a preferable tissue, and (b) Indicates an unfavorable organization as an organization.

FIG. 3 is a conceptual diagram showing that the degree of resistance to external force differs depending on the structure on both sides of the gap. (A) shows that the warp yarns at both ends of the gap after the easily soluble fiber is dissolved and removed maintain a lamellar structure and is not slippery with respect to external force, and is therefore a preferable way to arrange (b) ) Indicates that the warp yarns at both ends of the gap portion have the same structure, that is, a so-called same-tissue structure, and is slippery with respect to an external force, which is an undesirable arrangement.

FIG. 4 is a diagram showing an example of the structure of the ripstop (a) and the mesh-like dobby fabric (b) other than the flattened structure, and shows that the structures on both sides of the gap may be a flattened structure.

FIG. 5 exemplifies pattern expression by a gap, and a solid line indicates a portion having a gap. (A) And (b) shows the example of the crevice pattern obtained by melt | dissolving and removing the part which interwoven the easily soluble filament over the whole surface. The patterns in Examples 1 to 7 and Comparative Examples 1 to 8 form such a lattice pattern. (C) is an example which shows the pattern expression by a picking process. A lattice pattern with a gap is formed only in the extracted portion, and the non-extracted portion is plain without a gap, resulting in a woven fabric in which the extracted portion and the non-extracted portion are mixed. Eating is due to printing, and unlike the entire dissolution that becomes a linear pattern as in (a) and (b), a curved gap pattern can be expressed.

  The woven fabric of the present invention is a thin, lightweight, high-density woven fabric mainly composed of, for example, nylon or polyester, and has appropriate air permeability by providing a gap in the woven fabric while being windproof. In addition, since the fabric of the present invention is provided with a gap, it eliminates the problem that a fray tends to occur during dyeing processing or during wearing or washing. Force)) to determine the suitable gap ratio to overcome the above problems, gap between gaps (pattern size), and how to arrange the yarns at both ends of the gaps in the background (structure) This is a woven fabric based on a completely new idea that we have proposed.

  Hereinafter, the fabric of the present invention will be specifically described.

  As a typical example of the woven fabric of the present invention, first of all, a lattice pattern, a stripe pattern, or a border obtained by dissolving and removing all the easily soluble filaments woven in the warp direction and / or the weft direction. There is a woven fabric having a gap like a handle (for example, see FIGS. 5A and 5B). FIG. 5A shows an example in which a gap pattern is present on the entire surface of the woven fabric, and the gap patterns are all lattice patterns. FIG. Shows an example in which a lattice pattern and a stripe pattern are mixed. Further, as a second typical example, there is a woven fabric having a portion where a gap is present by dissolving and removing the interwoven easily soluble filament and a portion where no remaining gap is present without being dissolved (see, for example, FIG. 5C). ). FIG. 5C shows an example in which the fabric has a part having a gap pattern and a plain part not having a gap pattern, and the gap pattern is a lattice pattern.

  In the woven fabric of the present invention, as described above, only a pattern with a gap may continuously exist (for example, see FIGS. 5A and 5B), or a portion of a pattern with a gap and a gap between the patterns. There may be no plain portion (see, for example, FIG. 5C). ). There is no special restriction on how to make a pattern with a gap. In the product of the present invention, a woven fabric (for example, a woven fabric of Example 8) in which a pattern portion with a gap and a plain portion without a gap are mixed is used. It is possible to use a pattern portion with a gap on the shoulder portion and back portion where sweat and temperature / humidity are desired to escape, and to create a boundary portion between these portions without a seam. In addition, fabrics of the present invention in which gap patterns are continuous (for example, FIG. 5 (a), Example 1 and the like) and low-breathed fabrics having no gap patterns are prepared separately, and these are used in the same parts. It can also be set as the product which sewn the boundary part of the textile fabric.

The woven fabric of the present invention is woven at a high density, and the cover factor represented by the following formula is 1550 to 2300, preferably 1600 to 2200. The cover factor is the sum of the cover factors of longitude and latitude. Further, the cover factor of the fabric is a value after dissolution of the easily soluble fiber.
Cover factor (CF) = √ total fineness T × density (books / 吋)
If the cover factor is less than the above range, the gaps are likely to be frayed, and not only during wearing and washing, but also in the step of dissolving and removing easily soluble fibers in the fabric, it is not preferable. If the cover factor exceeds the above range, a fabric with a hard texture is formed, and the basis weight increases, which is not preferable.

The woven fabric of the present invention is woven lightweight and has a basis weight of 15 to 55 g / m ² , preferably 20 to 50 g / m ² . If the basis weight is less than the above range, the tearing strength becomes weak, and if it exceeds the above range, it becomes heavy, which is not preferable. The woven fabric of the present invention is made of thin fabric, and the thickness is preferably 0.04 to 0.25 mm, more preferably 0.05 mm to 0.20 mm. If the thickness is less than the above range, the tearing strength becomes weak, and if it exceeds the above range, it may become heavy.

The fabric of the present invention needs to satisfy the following conditions (i) to (iv).
(I) The clearance ratio is 0.5 to 14%;
(Ii) The distance between the gaps is 3.5 to 50 mm;
(Iii) The structure at both ends of the gap is a flattened structure; and (iv) The gap is obtained by dissolving or removing the easily soluble fiber woven with the hardly soluble fiber completely or partially. That it is.

The gap ratio defined in (i) above represents the degree of gap clearance and is 0.5 to 14%, preferably 2 to 13%.
As shown in FIG. 1, the gap ratio is represented by the gap ratio (%) = (B−A) / B × 100.
A: Number of yarns at a portion not including the gap in the complete pattern B: The yarn number gap ratio at the portion including the gap in the complete pattern is calculated according to warp and weft. (N = 3)

  The clearance ratio is calculated for each longitude and latitude, and both must be within this range. If the gap ratio of any of the backgrounds is less than the above range, the air permeability is difficult to obtain, and if it exceeds the above range, the air permeability increases, but the slip resistance resistance including the gap portion decreases, and it is easy to cause a fray when wearing or washing. It is not preferable.

The gap ratio of the entire fabric is the same when the fineness, density, number of readily soluble filaments, and pattern size are the same, but the background gap ratio is the same. It is reasonable to express it as a factor reduction rate. The cover factor reduction rate is expressed by the following equation, and is required to be 0.5 to 14%, preferably 2 to 13%, similarly to the gap ratio of the background.
Cover factor reduction rate (%) = (C−D) / C × 100
C: Cover factor of fabric before dissolution of easily soluble fibers D: Cover factor of fabric after dissolution of readily soluble fibers

  The inter-gap distance (pattern size) defined in (ii) above refers to the complete length of the pattern including the background gap as shown in FIG. The distance between the gaps is 3.5 to 50 mm, preferably 5 to 40 mm, with respect to the background. If the distance between the gaps is less than the above range, since the area of the non-dissolved portion is small, the force against the external force is weakened, and may easily occur (see, for example, Comparative Example 5). This phenomenon cannot be solved even by increasing the cover factor. The wider the distance between the gaps, the easier it is to obtain a woven fabric with less mayor. However, if it exceeds the above range, it is difficult to obtain high air permeability and a large pattern is not preferable (see, for example, Comparative Example 6).

  Polyester strongly twisted georgette fabrics used for blouse and skirt fabrics, etc., are difficult to fray because the yarns interfere with each other even if the density is low due to the twist angle and wrinkle of the twisted yarn. There is a feature that is difficult to do. However, in the case of a woven fabric using a non-twisted yarn, the yarn is easy to move with respect to an external force, and it is easy to fray as compared with a strong twisted yarn fabric. In the fabric of the present invention, attention is paid to the distance between the gaps, and this is defined in a range where it is difficult to fray.

  As described above, it is not sufficient to prevent fraying by simply specifying the cover factor, gap ratio, and gap distance (pattern size) of the fabric, and as defined in (iii) above, The knitted fabric is not easily moved against the action of external force (for example, see FIGS. 2 (a) and 3 (a)), that is, the yarns at both ends of the gap are warp yarns and weft yarns. It is necessary to avoid the same arrangement (not lined up in the same mouth).

  FIG. 3 (a) is a diagram showing a preferred flattened structure, in which the arrangement of the warp yarns at both ends of the gap is not the same, and the black warp yarns are constrained by the white weft yarns, and the external force is blackened. This warp is difficult to move and is a preferable structure. FIG. 3B shows a structure in which the warp is arranged at both ends of the gap, and the binding force by the weft does not act on the external force, so that the black warp easily moves as indicated by the arrow, and the gap is blurred. It is an unfavorable organization.

  FIG. 4 shows a preferred example using a tissue other than the heel tissue. FIG. 4A shows an example of a structure in which a lip stop is incorporated, and FIG. 4B is an example of a structure in which a two-dissolvable filament is woven into a heel tissue part, and a mesh-like dobby is incorporated. In either case, the warp yarns and the weft yarns are not arranged in the same manner on both ends of the gap portion, and the structure is difficult to fray.

  A fabric having a gap almost equivalent to that obtained by the fineness and the number of melted filaments of the warp easily soluble filament shown in FIG. In the case of obtaining, as shown in FIG. 3A, the fineness of the readily soluble filament can be set to 4 marks 17T = 68 = 68T.

  The use of the fabric of the present invention is preferably for sportswear, outdoor wear, casual wear, and sleeping bag side. Unlike casual wear, women wear, lining, and bedding use are required to have higher slip resistance. The fabric of the present invention preferably has a sliding resistance of 3 mm or less as measured values including a gap portion under a load of 117 N. More preferably, it is 2.5 mm or less. If the slip resistance is more than the above range, it tends to cause fleeting during wearing or washing, which tends to be lacking in practicality. Further, in a woven fabric having a total fineness of the ground yarn of less than 17T, tearing may occur in the middle of the load at a test load of 117N. In that case, the slip resistance at a load of 78N or 49N is preferably 3 mm or less, more preferably 2. 5 mm or less.

In the woven fabric of the present invention, the portion having no gap pattern contributes to wind resistance, but the gap pattern portion contributes to having an appropriate air permeability as a whole. The air permeability of the fabric of the present invention is preferably ^{2 to} 40 cm ³ / cm ² · s, more preferably ^{2 to 30} cm ³ / cm ² · s. In measuring the air permeability, a sample is taken so that the ratio of the gaps existing in the fabric does not fluctuate. If the air permeability is less than the above range, the effect of eliminating the stuffiness during sweating is weak, and if it exceeds the above range, the feeling of cooling after sweating is undesirably strong. In the woven fabric of the present invention, a portion without a gap (non-etched portion) formed by a biting process constitutes a plain portion having a low air permeability that hardly allows ventilation, and the air permeability after calendering of this portion is 0.5 to 10 cm ³ /. cm ² · s is preferable, and more preferably 1 to 6 cm ³ / cm ² · s. When the air permeability at this location exceeds the above range, it is not preferable because a location with a gap is likely to fray.

Next, the manufacturing method of the textile fabric of the present invention will be described.
The woven fabric of the present invention is basically composed of a hardly soluble filament and a readily soluble filament that are ground yarns at the time of weaving. Finally, the easily soluble filament is completely or partially dissolved, and hardly soluble. The filament remains undissolved. The easily soluble filament refers to a fiber having a faster dissolution rate than a hardly soluble filament in hot water or an alkaline aqueous solution. The easily soluble polyester is preferably a type in which the weight loss rate is 3 times or more faster than the hardly soluble polyester in an alkali concentration of 2% and normal pressure boiling for 30 minutes.

  The hardly soluble filament preferably has a total fineness of 11 to 56 T because of its light weight. Furthermore, 17-50T is preferable, More preferably, it is 17-44T. When the total fineness is less than the above range, even when the gap ratio is within the range of the present invention, the actual gap is small and the visual effect tends to be weaker than that of a thick thread. If the gap ratio is increased to obtain a visual gap, the tissue binding force is weak and the cover factor needs to be increased. As a result, the number of warps increases, so that the frequency of yarn breakage increases and the weaving property may deteriorate. . Further, if the range is exceeded, the basis weight becomes heavy.

  The single yarn fineness of the hardly soluble filament is preferably 0.2 to 4.0 T. Since it is a woven fabric structure that obtains air permeability through the gap, it is preferable that the portion without the gap has a low air permeability in order to contribute to windproof properties. In this case, a high-density fabric using 0.2 to 1.1 T Is possible. Moreover, when making the air permeability of a location without a clearance comparatively high, it is possible to use a woven fabric using 1.8 to 4.0 T. If the single yarn fineness is less than the above range, the vicinity of the gap is likely to be frayed, and if it exceeds the above range, it tends to be hard.

  The cross section of the yarn of the hardly soluble filament is not only a general round cross section, but also a triangle, a square, a Y, a W, a cross, a hollow, a pentagon or more polygon, a flat, a flat or a round having a plurality of convex portions A cross section or the like is used and there is no particular limitation. In addition to titanium oxide, the additive may contain a pigment, carbon, and the like. Polyester and nylon (6, 66) are preferably used as the material, but may be polytrimethylene terephthalate, polybutylene terephthalate, conjugate fibers thereof, or the like. Moreover, the raw material may be a false twisted crimped yarn (DTY, pin false twisted yarn) in addition to a filament (raw yarn).

  The strength of the hardly soluble filament is preferably 3.5 cN / dtex or more for the raw yarn and 3.0 cN / dtex or more for the false twisted crimped yarn from the viewpoint of securing the tear strength of the fabric. When the false twisted crimped yarn is polyester, a homopolymer type that is difficult to hydrolyze with an alkaline aqueous solution, a quaternary ammonium salt or the like is preferable. In the case of nylon, 66 nylon type that is not easily lost by crimping with these agents, temperature, etc. More preferred. When the easily soluble filament is water-soluble vinylon, the hardly soluble filament is not limited to this, and copolyester or 6 nylon can also be suitably used.

  Easily soluble filaments are used to create gaps in fabrics, such as water-soluble vinylon that is soluble in hot water, copolymerized polyesters and polylactic acid fibers that are easily hydrolyzed with aqueous alkaline solutions and quaternary ammonium salts. Is used. Examples of the copolyester include polyesters obtained by copolymerization of isophthalic acid, sebacic acid, 5-potassium sulfoisophthalic acid, 5-methylsulfoisophthalic acid and the like. In the present invention, 2-8 mol% of 5-sodium sulfoisophthalic acid is used. A copolymerized polyester containing is preferably used.

  As the water-soluble vinylon, those manufactured by Nichibi Co., Ltd. and Kuraray Co., Ltd. are preferably used. It is preferable to use a type that can be easily dissolved and removed at a normal scouring temperature.

  The copolyester can be used as a filament or false twisted crimped yarn, and may be employed in consideration of the characteristics of the hardly soluble filament, the woven property and appearance of the fabric, the ease of hydrolysis, and the like. For example, when weaving with a single beam, both the hardly soluble filament and the easily soluble filament are easy to adjust the warp tension with the false twisted crimped yarn and to easily weave. Further, when either one is a filament yarn (raw yarn), it is necessary to separately adjust the warp tension, which requires a double beam, resulting in high cost. When the boiling water shrinkage ratios of the easily soluble filament and the hardly soluble filament are different, a flat woven fabric appearance can be easily obtained in the woven fabric in which the easily soluble filament is completely dissolved.

  On the other hand, the non-eating portion of the fabric that partially dissolves by ebbing tends to be uneven due to the difference in shrinkage of the remaining yarn, making it difficult to obtain a flat fabric. In the case of biting, it is easy to obtain a woven fabric where the non-plucked portion is flat by using false twisted crimped yarn and adjusting the draw-out set temperature condition. For ease of hydrolysis, when the fineness is the same, false twisted crimped yarn that is lower in strength than filament yarn is superior, and weaker hydrolysis conditions than filament yarn are sufficient, and it suppresses the decrease in strength and dyeability change of ground yarn be able to.

  A preferable combination of a hardly soluble filament and an easily soluble filament when obtaining a gap pattern is (a) nylon and copolymer polyester or water-soluble vinylon, and (b) A combination of homopolyester and copolymerized polyester or water-soluble vinylon is preferred. Moreover, when obtaining a partial clearance by biting, a combination of (c) nylon and copolymer polyester and (d) homopolyester and copolymer polyester is preferable. In order to obtain a woven fabric having a crevice-like gap pattern, it is preferable to employ a method in which these yarns having different boiling water shrinkage ratios and crimp characteristics are interwoven and both are left in the woven fabric by biting. The design of the fabric of the present invention can be performed by taking advantage of the above characteristics.

  The gap of the woven fabric is determined by the fineness of the readily soluble filament and the number of fibers used when the cover factor of the woven fabric is determined. The fineness of the easily soluble filament is preferably 0.5 to 4.0 times that of the hardly soluble filament that is the ground yarn. For example, when the hardly soluble filament is 22T, the easily soluble filament is preferably 11 to 88T. When it is desired to reduce the gap, for example, the number of easily soluble filaments can be reduced, or a thread thinner than the hardly soluble filament can be used as the easily soluble filament. Even when a thin thread is used, it is preferably 0.5 times or more the fineness of the hardly soluble filament, and if it is less than that, the clearance ratio becomes small, and it is difficult to obtain appropriate air permeability.

  The present invention is a high-density fabric and has a large number of warps. In the case of a labyrinth structure, warp repeats up and down every time one weft is driven, and thus fuzzing or thread breakage is likely to occur due to rubbing between the wings and warps in the wings. In this case, the degree of damage (fluffing, breakage) of warp due to rubbing is stronger with rubbing with metal (rib) than warps. In order to prevent the yarn from being damaged by rubbing with the cocoon wings, it is preferable to lower the cocoon count (widen the gap between the cocoon wings) and increase the number of warp yarns drawn into one cocoon. In other words, by increasing the number of hooks (narrowing the gap between the wings) and reducing the number of pulls to two, lowering the number of hooks (widening the gap between the wings) and reducing the number of pulls to three Two on both sides touch the wings, but one in the middle is not easily scratched by the wings, and the weaving is improved.

  As a device for dealing with such a weaving method, particularly in the case of a labyrinth structure, it is preferable to make the easily soluble filament thinner than the hardly soluble filament and to have an even number of structures such as four or six. . For example, as shown in FIG. 3 (b), in order to obtain a woven fabric with three hardly soluble filaments 22T drawn (66T in one wing), the easily soluble filaments are shown in FIG. 3 (b). Instead of using 3 pulls (66T in each wing), the target is a clear gap by making 4T 17T (68T in 1 wing) as shown in FIG. 2 (a). A woven fabric with less appearance and mayre is obtained.

  Conversely, when it is desired to increase the gap, for example, the number of easily soluble filaments can be increased, or a thread that is thicker than the hardly soluble filament can be used as the easily soluble filament. Even when a thick thread is used, the fineness is preferably 4.0 times or less than the fineness of the hardly soluble filament, and if the fineness is exceeded, the fineness difference increases, the raw machine is likely to be wrinkled, and it is difficult to dissolve.

  The number of easily soluble filaments used is preferably 1 to 6 in the cover factor range of the present invention. However, this number is the number converted to the fineness of the hardly soluble filament of the ground yarn. For example, the fineness of the hardly soluble filament is 22T, and two 44T easily soluble filaments are twisted or mixed to obtain a mixed yarn. When one is used as 88T, 22T is converted to four. When the number of the easily soluble filaments is 7 or more, there are many gaps, and it becomes easy to fray. More preferably, it is 2-4. If it is desired to increase the gap within this number, it is preferable to increase the fineness, and if it is desired to reduce the clearance, it is preferable to decrease the fineness.

  The woven fabric of the present invention has a cover factor of 1550 to 2300, preferably 1600 to 2200 as a whole including a gap formed after dissolution of easily soluble fibers. The cover factor reduction rate of the fabric before and after the dissolution treatment of the easily soluble fiber is preferably 2 to 14%. Further, the cover factor of the fabric before the dissolution treatment is preferably 2 to 14% higher than that after the dissolution, and is preferably 1600 to 2700.

  In the woven fabric of the present invention, since a visual effect is obtained with a gap pattern, a fine and easy-to-obtain tissue structure is easily used. A lip stop or mesh-like dobby structure composed of a flared structure in which the gap portion is difficult to be easily used is also preferably used (see, for example, FIGS. 4A and 4B).

  In the case of a woven fabric using two or more kinds of warp yarns, for example, a filament yarn and a false twisted crimped yarn, the method of applying tension to the warp yarn during weaving is different, so that the weaving property is not good with a single beam. For this reason, it is desirable to use a multiple beam that can easily manage the warp tensions. When using the same type of warp yarn, such as ground yarn and easily soluble fiber, false twisted crimped yarn can be woven with a single beam. The weaving model is not particularly limited, and a water jet loom, an air jet loom, a rapier loom or the like is preferably used.

  When weaving all the easily soluble filaments weaved in a bath to obtain a woven fabric with gaps such as a lattice pattern, scouring the glued fabric (continuous scouring at normal pressure, jigger scouring, liquid scouring), drying A general process of set, dyeing (liquid dyeing, jigger dyeing, beam dyeing) and finishing (water repellency, calendering, film processing) is a process of applying a dissolution removal process according to easily soluble filaments before dyeing. It is preferable to add.

  When the easily soluble filament is a water-soluble vinylon, the water-soluble vinylon is dissolved and removed while continuously scouring at a temperature equal to or higher than the melting temperature corresponding to the type or distributed in a liquid dyeing machine.

  When the easily soluble filament is a copolymerized polyester containing 2 to 10 mol% of 5-sodium sulfoisophthalic acid, if the ground yarn is nylon 6 yarn, the alkali concentration is 1 to 6%, 92 to 105 ° C, 20 to 60 It is preferable to dissolve and remove while stirring in a liquid dyeing machine for 1 minute. When the ground yarn is nylon 66 or homopolyester, it can be dissolved under higher pressure and higher alkali concentration conditions. The dyeing conditions may be general conditions according to the material, and may be printed.

  For the woven fabric having a gap only in the portion to be removed by the biting, a copolyester containing 2 to 10 mol% of 5-sodiumsulfoisophthalic acid having excellent alkali solution solubility as an easily soluble filament is preferably used, and hardly soluble. Nylon or homopolyester is preferably used as the filament. Such fabrics are scoured and desiccated, dried and set, followed by high-pressure steam heat treatment, then sprayed in a low-alkali aqueous solution, and only easy-dissolvable filaments (copolymerized polyester) in the high-pitch area. Is dissolved and removed, and then dyed or printed. At the time of dyeing, the non-etched portion can be dyed differently from the ground yarn, and the design can be improved. Next, in addition to the above-described water repellency and calendar processing, finishing processing such as resin processing can be performed.

  The paste is preferably used as a printing paste containing 15 to 40 parts of a quaternary ammonium salt, and the high pressure steam treatment is performed at 110 ° C. or less for 6 nylon fabrics and 135 ° C. or less for 66 nylon or polyester fabrics. Is preferred. Urea and caustic soda may be contained in the printing paste. Thereafter, for the purpose of removing and removing the copolyester that has been subjected to the stripping treatment, it is preferable to carry out the treatment with an alkali concentration of 0.5 to 2%, a temperature of 80 to 98 ° C., and a time of 15 to 40 minutes. . If this condition is too strong, the copolymerized polyester in the non-etched portion is also dissolved, and the design properties are impaired and the strength is liable to decrease. Therefore, it is preferable to process within this range.

  In the woven fabric of the present invention, when a gap is obtained by completely dissolving the easily soluble filament interwoven portion, (1) a woven fabric in which the easily soluble filament is interwoven and the entire surface is made into a lattice pattern after dissolution (FIG. 5a). (2) The easily dissolvable filaments are arranged at regular intervals, the wefts are weaved at regular intervals in the longitudinal direction, and the non-allocated locations are 50 cm long. An example is a woven fabric (FIG. 5 (b)) in which weaving and weaving are 100cm in length, and after dissolution, only the stripe portion is 50cm and only the lattice portion is 50cm. In the woven fabric of FIG. 5A, the air permeability is uniform, and in the woven fabric of FIG. 5B, the lattice pattern portion has high air permeability and the stripe portion has low air permeability.

  In the method of obtaining a gap pattern by punching, an arbitrary curved gap pattern can be obtained by a printing method, unlike the method of obtaining a linear gap pattern by dissolving the entire interwoven portion. Moreover, it is also possible to provide a linear lattice pattern only at a specific location as shown in FIG. In the biting method, it is possible to obtain a woven fabric in which non-cutting portions having low air permeability are mixed.

  In the woven fabric of the present invention, for example, it is possible to make a product using a gap pattern portion having a high air permeability in a portion that hits a sweat portion such as an armpit, a back, a shoulder, and a portion having a low air permeability in an abdomen or the like It is. In this case, for example, the gap pattern woven fabric of FIG. 5A and the low-permeability woven fabric for down proofing are sewn together, or the woven fabric as shown in FIG. 5C can be manufactured without sewing only the joint between the shoulder and the abdomen. It is also possible. Since there is no seam, it can be made into a product with good slippage with the skin, clothes, backpack and the like.

  In the woven fabric of the present invention, it is preferable to perform water-repellent finishing after dyeing. The water-repellent finish is preferably one that is durable against washing to prevent slipping off during product wear or washing. Colloidal silica (manufactured by Nikka Chemical), polyester polymer resin (Takamatsu) is used as a hard finish. Commercial products such as oils and fats, modified silicone emulsions (manufactured by Yoshimura Yuka Chemical) and the like are preferably used. As the water repellent, for example, a fluorine-based water repellent, a silicone water repellent, a paraffin water repellent, a non-fluorine water repellent such as a stearin water repellent, or the like is used. From the viewpoint of environmental consideration, the fluorine-based water repellent is preferably a C6 type. Further, for the purpose of washing durability and the like, a melamine-based resin, an isocyanate-based crosslinking agent, a carbodiimide-based crosslinking agent, or the like may be added to the water-repellent finish. As a processing means, a padding method, a coating method, a gravure method, a spray method or the like can be applied. In the present invention, a water-repellent finished fabric is suitably used for sportswear (including outdoor wear), particularly for applications that require stretchability.

It is preferable to perform calendering after the water repellent treatment, and this reduces the air permeability of the fabric, but it is possible to reduce the thickness of the fabric, emphasize the gloss, reduce the variation in the air permeability, and increase the slip resistance. The calendering conditions are compression with a non-heated pressure roll, and in the case of nylon 6 fabric, the roll temperature is 100 ° C., low pressure is weak and the pressure is 100 to 190 ° C., the pressure is 10 to 25 kg / cm ² , the processing speed It can be performed under conditions of 10 to 30 m / min. Polyester and 66 nylon can be processed under higher temperature conditions of 200 to 220 ° C. In the case of a woven fabric having a relatively low air permeability before 20 cm ³ / cm ² · s, it is preferable to weaken these calendar conditions to obtain a predetermined air permeability.

Further, for the purpose of increasing the slip resistance, an acrylic or polyurethane resin can be fixed on the one side of the fabric by spraying or coating to the extent that the air permeability is not significantly inhibited in the range of 0.1 to 5 g / m ² . The urethane resin is preferably a non-solvent resin having a low compatibility with synthetic fibers in order to obtain a low coating amount. As a method of coating the synthetic resin on one side, knife coating such as a floating knife coater, knife roll coater, knife belt coater, etc. is preferably employed. Further, it is also preferable to employ a method in which a urethane resin is impregnated by a wet method and the resin is contained in the entire fiber. In the present invention, since the coating amount is small, a calendar for preventing resin leakage is unnecessary, but it may be applied for the purpose of flattening the surface of the fabric and uniformly applying the resin.

  The effects of the fabric of the present invention are shown below, but the present invention is not limited to these. In addition, evaluation of the characteristic value in an Example depended on the following method.

Crevice ratio: Crevice ratio (%) = (B−A) / B × 100
A: Number of yarns not including the gap in the pattern
B: Number of yarns including the gaps in the complete pattern
The gap ratio is calculated according to longitude and latitude. (N = 3)

  Cover factor (CF) longitude: √Dtex × density (book / 吋) + latitude: √Dtex × density (book / 吋)

Cover factor reduction rate (%) = (C−D) / C × 100
C: Cover factor of fabric before dissolution of easily soluble fiber
D: Cover factor of fabric after dissolution of readily soluble fiber

  Air permeability: JIS L1096 8.26.1A method (Fragile type method)

  Tearing strength: JIS L1096 D method (Pendulum method)

  Sliding resistance: JIS L1096 8.23 B method (under 117N load)

  Weight: JIS L1096 8.3.2

  The quality of the gap: ○ Good, × Poor (may have)

  Overall evaluation: ○ Good, × Failure (There are problems with the evaluation items)

The following two types of nylon 66 false-twisted crimped yarns (1) and (2) are prepared as the hardly soluble filaments, and the following two types of 5-sodium sulfoisophthalic acid are included as 6 mol% as the easily soluble filaments. Polymerized polyester false twisted crimped yarns (3) and (4) were prepared, and the following copolymer polyester false twisted crimped yarn (5) was prepared as a hardly soluble polyester multifilament.
<Slightly soluble filament>
(1) Nylon 66 false twisted crimped yarn 22T20f (Bright)
(2) Nylon 66 false twisted crimped yarn 44T24f (Bright)
<Easily soluble filament>
(3) Copolyester false twisted crimped yarn 22t12f (Bright)
(4) Copolyester false twisted crimped yarn 44T24f (Bright)
<Slightly soluble polyester filament>
(5) Homopolyester false twist crimped yarn 22T24f (semi-dull)

Example 1
(1) Nylon 66 false twisted crimped yarn 22T20f6 and (3) copolymer polyester false twisted crimped yarn 22T12f were used for the warp and weft, and these were arranged as shown in Table 1, with the density shown in Table 1, and As the structure, a taffeta having the structure shown in FIG. This raw machine was desized by spreading continuous scouring, dried by short loop, and then subjected to a dissolution treatment at 105 ° C. for 20 minutes in a liquid dyeing machine having an alkali concentration of 5% to remove the copolyester. Thereafter, liquid dyeing was performed with an acidic dye at 98 ° C. for 40 minutes, and a drying set was performed. Next, after immersing in a fluorine-based water repellent (Asahi Guard AG5690 5% manufactured by Asahi Glass Co., Ltd., a blend of isocyanate-based cross-linking agent Meikanate TP 100.6% manufactured by Meisei Chemical Industry Co., Ltd.), it was squeezed with mangle and dried. Thereafter, a woven fabric was obtained by calendaring at a roll temperature of 100 ° C., a pressure of 15 kg / cm ² , and a processing speed of 15 m / min. Details of Example 1 are shown in Table 1. The obtained woven fabric had no lattice at the portion where the easily dissolvable filaments intersected, and the lattice pattern due to the gaps was clearly visible. Table 1 shows the clearance ratio, distance between gaps, non-dissolved part of the product, cover factor of the part including the dissolved part, and reduction rate of the cover factor as shown in Table 1. The resistance and tear strength were satisfactory.

(Example 2)
(1) Nylon false twisted crimped yarn and (3) Copolymerized polyester false twisted crimped yarn so that the cover factor in Example 1 is less than that in Example 1 and the gap distance after finishing is similar to that in Example 1. Except for changing the arrangement, the raw machine was woven in the same manner as in Example 1, and the woven fabric was obtained through the process of dissolving and removing the copolyester and the dyeing finishing process. Details of Example 2 are shown in Table 1. The gap pattern was clearly seen as in Example 1. As shown in Table 1, the air permeability including the melted portion, the sliding resistance, and the tearing strength were satisfactory.

(Example 3)
(1) Nylon false twisted crimped yarn and (3) copolymerized polyester false twisted crimped yarn so that the cover factor in Example 1 is larger than that in Example 1 and the distance between the finished gaps is close to that of Example 1. Except for changing the arrangement, the raw machine was woven in the same manner as in Example 1, and the woven fabric was obtained through the process of dissolving and removing the copolyester and the dyeing finishing process. Details of Example 3 are shown in Table 1. The gap pattern appeared clearly, and as shown in Table 1, the air permeability including the dissolved part, the slip resistance, and the tear strength were satisfactory.

(Comparative Example 1)
(1) Nylon false twisted crimped yarn and (3) copolymerized polyester false twisted crimped yarn so that the cover factor in Example 1 is less than in Example 2 and the distance between the finished gaps is close to that in Example 1. Except for changing the arrangement, the raw machine was woven in the same manner as in Example 1, and the woven fabric was obtained through the process of dissolving and removing the copolyester and the dyeing finishing process. Details of Comparative Example 1 are shown in Table 1. Many mayores were found in the gaps, and some mayores were found in places other than the gaps. As shown in Table 1, the air permeability including the melted portion was higher than that of Example 1, but the slip resistance was significantly poor, the tear strength was low, and the fabric was unsatisfactory.

(Comparative Example 2)
(2) Nylon 66 false twisted crimped yarn 44T24f and (4) Copolyester false twisted crimped yarn 44T24f were used for the warp and weft, and these were arranged as shown in Table 1 and at the density shown in Table 1. As the structure, a taffeta having the structure shown in FIG. In the same manner as in Example 1, a woven fabric was obtained through a dissolution removal process and a dyeing finishing process of the copolyester. Details of Comparative Example 2 are shown in Table 1. The cover factor is large, and it has excellent sliding resistance and tearing strength, but has a low air permeability, a large basis weight, and a fabric lacking in light weight.

Example 4
In Example 1, (3) except that the number of copolyester false twisted crimped yarns used was changed from 2 to 4, the same fabric configuration as in Example 1, and the fabric was processed through the same processing steps as in Example 1. Obtained. Details of Example 4 are shown in Table 2. As shown in Table 2, although the gap ratio and the cover factor reduction rate are slightly increased from Example 1 and the pattern size is slightly larger, the fabric has a higher air permeability than Example 1, and other physical properties are satisfactory. It was a thing. The gap was a woven fabric that was clearly visible from Example 1.

(Example 5)
In Example 3, except that the number of (3) copolymer polyester false twisted crimped yarns used was changed from 2 to 6, the fabric was made the same as in Example 3, and the fabric was processed through the same processing steps as in Example 1. Obtained. Details of Example 5 are shown in Table 2. As shown in Table 2, the gap ratio and the cover factor reduction rate more than doubled from Example 3 and the pattern size was slightly larger, but the fabric had a higher air permeability than Example 3, and the gap was also clearer than Example 3. The visual effect was great, and the sliding resistance and tear strength were satisfactory.

(Comparative Example 3)
In Example 3, except that the number of (3) copolymerized polyester false twisted crimped yarns used was changed from 2 to 10, the fabric configuration was the same as in Example 3, and the fabric was processed through the same processing steps as in Example 1. Obtained. Details of Comparative Example 3 are shown in Table 2. As shown in Table 2, the gap ratio and the cover factor reduction rate increased to about 5 times from Example 3 and the air permeability increased, but the gap portion was frayed and the quality was inferior, resulting in inferior quality, slip resistance, tearing The fabric also lacked practicality because its strength was reduced.

(Comparative Example 4)
In Example 1, (3) Copolyester false twisted crimped yarn was not used, and (1) Nylon false twisted crimped fabric was made. A woven fabric was obtained through the same steps as in Example 1 except that the dissolving step with the aqueous alkali solution was omitted. Details of Comparative Example 4 are shown in Table 2. As shown in Table 2, the woven fabric had a low air permeability and had no visual effect because there was no gap.

(Example 6)
In Example 1, except that the arrangement of (1) nylon false twisted crimped yarn and (3) copolymer polyester false twisted crimped yarn is as shown in Table 3, the same fabric configuration as in Example 1 was used. A woven fabric was obtained through the same processing steps. Details of Example 6 are shown in Table 3. It was a lattice-patterned woven fabric having a gap distance of 10.3 mm and a weft of 10.8 mm as shown in Table 3. The physical properties were satisfactory as shown in Table 3.

(Example 7)
Example 1 except that the arrangement of (1) nylon false twisted crimped yarn and (3) copolymer polyester false twisted crimped yarn in Example 1 was larger than that in Example 6 as shown in Table 3. The woven fabric was obtained through the same processing steps as in Example 1 with the same woven fabric configuration. Details of Example 7 are shown in Table 3. As shown in Table 3, the distance between the gaps was a lattice-patterned fabric with a warp distance of 30.3 mm and a weft length of 31.8 mm. As shown in Table 3, although the air permeability was lowered, the physical properties were satisfactory.

(Comparative Example 5)
In Example 3, the same fabric configuration as in Example 3 except that the arrangement of (1) nylon false twisted crimped yarn and (3) copolymer polyester false twisted crimped yarn was made smaller as shown in Table 3. Then, a woven fabric was obtained through the same processing steps as in Example 1. Details of Comparative Example 5 are shown in Table 3. As shown in Table 3, it was a lattice-patterned woven fabric with a gap distance of 2.5 mm and a weft of 2.7 mm, and the physical properties were large as shown in Table 3 and the sliding resistance was low. Despite the fact that the cover factor is larger than that of Example 1, these are inferior compared to Example 5 in which the handle is too small, the gap ratio is large, and the cover factor that does not include the melted part is the same. This is considered to be due to the fact that the area other than the gap that is sufficient for the area was small.

(Comparative Example 6)
Example 1 except that the arrangement of (1) nylon false twisted crimped yarn and (3) copolymer polyester false twisted crimped yarn in Example 1 is larger than that in Example 7 as shown in Table 3. The woven fabric was obtained through the same processing steps as in Example 1 with the same woven fabric configuration. Details of Comparative Example 6 are shown in Table 3. It was a lattice-patterned woven fabric having a distance between gaps of 60.3 mm and 63.4 mm as shown in Table 3. As shown in Table 3, the sliding resistance and tear strength are satisfactory, but the handle size is too large, and the handle feels extended, and the air permeability is low because the gap ratio is small, resulting in lack of product strength. .

(Comparative Example 7)
In Example 1, (3) The same woven fabric structure as Example 1 was used except that three copolyester false twisted crimped yarns were used in the background as shown in FIG. A woven fabric was obtained through a finishing process. Details of Comparative Example 7 are shown in Table 4. As shown in Table 4, the physical properties were unsatisfactory in slip resistance. In spite of a small gap ratio compared to Example 4 having the same cover factor that does not include the melted portion, the yarn at both ends of the gap portion was frayed and disturbed, and the quality was not good. It is considered that the warp yarns and the weft yarns at both ends are the same in structure, so that the yarns are easy to move because of the so-called same mouth shape.

(Comparative Example 8)
In Example 1, except that (3) the copolyester false twisted crimped yarn was changed to (5) a homopolyester false twisted crimped yarn, the same fabric as in Example 1 was used, and the same dyeing finishing process as in Example 1 was performed. A woven fabric was obtained. Details of Comparative Example 8 are shown in Table 5. The homopolyester remained almost undissolved in the alkaline aqueous solution, and although it had a different color pattern, the pattern effect due to the target gap was not obtained at all.

(Example 8)
Using the fabric after the scouring and drying set of Example 1, the portion (5d in FIG. 5 (c)) subjected to the full removal in the width direction as shown in FIG. 5 (c) is not subjected to the removal. A pattern punching print was repeated in which the portion (5e in FIG. 5C) was repeated in the length direction at intervals of 30 cm.

  For biting, a printing paste comprising 20 parts by weight of a quaternary ammonium salt (Takamatsu Oil & Fats Co., Ltd., Cathizol NS11), 40 parts by weight of original glue (Fuji Chemical Co., Ltd. Fuji Chemi HECBL-20), and 40 parts by weight of water is used. After printing on the woven fabric, steam treatment at 110 ° C. for 50 minutes is performed, and then, spraying treatment is performed at 90 ° C. for 30 minutes in a liquid dyeing machine having an alkali concentration of 1% to remove the copolyester from the printing portion. It was done by Subsequently, nylon was dyed with an acid dye and the copolyester was dyed with the same color using a cationic dye to obtain a woven fabric. Thereafter, the same finishing process as in Example 1 was performed to obtain a woven fabric. Details of Example 8 are shown in Table 6.

The obtained woven fabric has a plain portion (5d in FIG. 5 (c)) having a gap pattern with an interval of 5.3 mm and a plain portion without gap (5e in FIG. 5 (c)) at a distance of 30 cm in the length direction. It became a woven fabric having a flat appearance alternately present. Physical properties of the fabric, as shown in Table 6, the air permeability after calendar 13cm ³ / ^cm 2 · s at抜食places, at ^{3cm 3} / cm ² · s is a non抜食locations, edgecomb resistance抜食locations Both the strength and tear strength were satisfactory.

At least the following can be derived from the results of the above Examples and Comparative Examples.
(I) From Table 1 (Examples 1 to 3, Comparative Examples 1 and 2), the cover factor has an appropriate range. Moreover, when there are many, a fabric weight will become heavy and a lightweight property will not be acquired.
(Ii) From Table 2 (Examples 4 to 5 and Comparative Examples 3 to 4), there is an appropriate range for the gap ratio (size of the gap), there is no visual effect if there is no gap, and if it is less, the air permeability is obtained. It's hard to be done If it is too much, the slip resistance will deteriorate.
(Iii) From Table 3 (Examples 6 to 7 and Comparative Examples 5 to 6), there is an appropriate range for the distance between the gaps (pattern size). If the distance is too small, the slip resistance is deteriorated. It is difficult to obtain, resulting in an extended pattern.
(Iv) From Table 4 (Comparative Example 7) and Example 1, when the arrangement of the yarns at both ends of the gap portion is the same, it becomes the same mouth shape, so that it is easy to fray, and the arrangement of the yarns at both ends is a flat texture If it is, it will be difficult to fray.
(V) From Table 5 (Comparative Example 8) and Example 1, the polyester to be dissolved and removed is difficult to achieve with a hardly soluble homopolyester.
(Vi) From Table 6 (Example 8) and Example 1, the gap pattern is a geometric pattern (lattice pattern, striped pattern, border pattern) configured linearly in the context, a concrete pattern by eating, An abstract pattern can be expressed, which gives the fabric an appropriate air permeability and visual effect.

  According to the present invention, it is possible to provide a lightweight and high-density fabric that has both moderate windproof properties and air permeability, and that can visually provide a gap that gives a cool feeling to the surface. Casual wear or sleeping bag products can be suitably manufactured.

Claims (4)

A lightweight high-density fabric having a cover factor of 1550 to 2300 and a basis weight of 15 to 55 g / m ² , wherein a pattern formed by a gap exists in the fabric, and the following conditions (i) to ( iii ) A fabric characterized by satisfying:
(I) The clearance ratio is 0.5 to 14% in both circumstances ;
(Ii) The distance between the gaps is 3.5 to 50 mm in both circumstances ; and (iii) the structures on both sides of the gap are a flat structure . ^2. The woven fabric according to claim 1, wherein the air permeability is ² to 40 cm ³ / cm ² · s, and the sliding resistance under a load of 117 N is 3 mm or less.   A textile product selected from sportswear, outdoor wear, casual wear, or sleeping bag, wherein the fabric according to claim 1 or 2 is used. The method for producing a woven fabric according to claim 1 or 2, wherein the gap is obtained by completely or partially dissolving and removing the easily soluble fiber interwoven with the hardly soluble fiber.