JP2013155449A - High-density woven fabric with low air permeability - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide high-density woven fabrics with low air permeability, which have excellent drying properties; and to provide high-density woven fabrics with low air permeability, which have excellent friction-durable water repellency.SOLUTION: High-density woven fabrics are provided by using multifilament yarns having a twist coefficient of 5100 or more. In particular, there are provided water-repellent high-density woven fabrics having a fabric cover factor of 1500 or more. The woven fabrics have an air permeability of 50 cc/cm2/s or lower. In addition, the woven fabrics are formed as a plain woven fabric and a woven fabric similar to a plain woven fabric, or as a twill woven fabric and a woven fabric similar to a twill woven fabric, and water-repellent woven fabrics having excellent friction durability are provided by water-repellent finishing of the woven fabrics.

Description

The present invention relates to a low-breathable, high-density fabric used for clothing and sundries used in living spaces.

Conventional high-density fabrics are made using many multifilaments, especially ultrafine multifilament yarns.
Furthermore, most yarns used for the purpose of obtaining a dense structure are usually non-twisted yarns or high-density multifilament fabrics using weakly twisted yarns that are twisted within a range that does not impair the weaving property.
Therefore, in a conventional high-density fabric using multifilament yarn, a large number of large capillaries made of untwisted or weakly twisted multifilaments are made in the fabric.
When these capillaries absorb water by capillarity, the water held in the capillaries is difficult to remove because of the dense structure, and it has been a drawback that it is difficult to dry.
Preventing this drawback and shortening or eliminating the drying time after washing is a big problem in the market because it leads to energy saving.
The present invention relates to a technique and a product for eliminating the disadvantages of a conventional high-density fabric using a strongly twisted multifilament yarn.
A search was made for known patents relating to high-density fabrics using strongly twisted multifilament yarns, and among the searched patents, two similar patent documents were compared with the present invention.

Among the 13 patents that were simply searched and searched with Japanese Patent Laid-Open No. 11-302944 “twisting coefficient * high density”, the related document was Japanese Patent Laid-Open No. 11-302944 “Method for producing high-density fabric”. This reference is a patent relating to providing a high-density fabric having a high water pressure resistance and an excellent washing durability. In this reference, a high-density fabric is disclosed in which a yarn having a twist coefficient of 2000 to 5000 and an ultrafine multifilament of 0.5 denier or less is used for the warp. However, the purpose of using a yarn having a twist coefficient of 2000 to 5000 in this example is that when weaving at a high density using a fluid jet weaving machine, when weaving warp without glue, the ultra-fine filament breaks single yarn, and fluff This is to prevent the weaving from being significantly reduced. The purpose of using high-strength multifilament yarn in the low-breathing and high-density fabric of the present invention is to change many long capillary structures composed of multifilaments to short capillary structures, and to reduce the gaps and prevent water penetration Therefore, the purpose is completely different from the patent of this reference. Furthermore, the value of the twisting coefficient indicating the degree of the twisted yarn is also defined as 2000 to 5000 in the present example, and in the embodiment, a twisted yarn of 300 T / M (twisting factor 3146) is implemented, whereas the present invention is The twist coefficient is 5100 or more, preferably 7000 or more, which are different. Furthermore, the patent configuration of Patent Document 1 of this reference is completely different from the present invention, and no description suggesting the patent configuration of the present invention is found in this reference. Of the 26 patents that were simply searched for in Japanese Patent Application Laid-Open No. 2001-140115 “Water Repellent * High Density * Strong Twist * Textile”, a related document is “Waterproof Raincoat” of Japanese Patent Application Laid-Open No. 2001-140115. In this example, a fabric with a water resistance of 300 mm or more is used for the part where raindrops falling vertically when worn are at an angle of 45 degrees or more, and the air permeability is 50 cc / cm 2 / second for the other parts. This patent relates to a highly breathable rain gown using the above water-repellent fabric. In this example, a strong twisted yarn woven fabric is exemplified as an example of a highly breathable fabric having an air permeability of 50 cc / cm 2 / sec or more, and a rain gown using this strong twisted yarn woven fabric is not easily wrinkled and has excellent portability. It is described. It is also described that the washing durability is excellent. The water-repellent strong twisted yarn fabric used in a part of the rain garment is a water-repellent processed twisted georgette fabric processed by an ordinary method, and is a known fabric using a strong twisted yarn that has no novelty. In Example 1 of this reference, a twisted woven fabric having a twisted number (twisted number) of 2700 times / M is used, and the twisting factor of 5000 or more of the present invention (twisted yarn number of 2700 times / M and the used yarn of 50 denier) The calculated twist coefficient corresponds to 19092), but the air permeability of the strongly twisted yarn fabric described in this example is 180 cc / cm 2 / second, and the air permeability in the claims is also 50 cc / cm 2 / second or more. This is different from the low breathability fabric of 50 cc / cm 2 / sec or less of the present invention. The fabric cover factor of the strongly twisted yarn fabric described in this example is 1485 when calculated from the denier and yarn density in the description example, which is different from the fabric cover factor 1500 or more of the present invention. Furthermore, the purpose of using the strong twisted multifilament yarn in the low breathable high density fabric of the present invention is to change a large number of long capillary structures composed of multifilaments to short capillary structures, to reduce gaps and prevent water penetration. The purpose of this patent is completely different from that of the patent of this reference. Furthermore, the patent document 2 of this reference is completely different from the invention of the present application, and no description suggesting the patent structure of the present invention is found in this reference.

Conventional high-density fabrics are made using many multifilament yarns, especially ultrafine multifilament yarns.
Furthermore, for the purpose of obtaining a dense structure, a non-twisted yarn is usually used to the extent that it is twisted within a range that does not impair the weaving property.
Therefore, the conventional high-density fabric using multifilament yarn has a structure in which a large number of large capillaries made of untwisted or weakly twisted multifilament yarn are formed in the fabric.
Once water is absorbed into these capillaries by capillary action or external pressure, the water is held inside the capillaries because of its dense structure, and it is difficult to remove and remains water-retained, making it difficult to dry. It was a drawback.
Preventing this phenomenon, shortening the drying time after washing, or making it unnecessary can improve the feeling of wearing and also improve the drying efficiency and lead to the omission of energy. There was a great demand.
The high-density fabric of the present invention is a low-breathing high-density fabric excellent in drying properties designed to reduce the capillary or make as little as possible, and a water-repellent water-repellent property obtained by water-repellent processing It is a low breathable high density fabric.
The low-breathing high-density fabric referred to in the present invention includes plain fabrics, twill fabrics and fabrics having a similar structure with a fabric cover factor of 1500 or more and a breathability of 50 cc / cm ² / sec or less.

In woven fabrics using untwisted multifilament yarns without twists and low twist multifilament yarns with few twists, the filament yarns constituting the yarns are converged in parallel or close to each other.
That is, many long capillaries are formed in the fabric. When weaving at a high density, even during the scouring and dyeing process, the tissue constraints are large, and the multifilament is disturbed and the capillary structure is less likely to break, resulting in a large number of capillary structures remaining in the fabric. Composed.
Since these capillary structures are high density fabrics, they are dense and difficult to penetrate into the fabric. In particular, when the surface of the multifilament becomes more hydrophobic due to water-repellent processing or the like, water penetration becomes more difficult. Utilizing this property, conventional high-density fabrics are used as waterproof fabrics.

As mentioned above, water-repellent high-density fabrics using conventional multifilament yarns are difficult to infiltrate water, but once water is infiltrated due to pressure during use such as wearing, the reverse There was a drawback that water was held in the capillary tube, making drying difficult. The low air permeability due to the high density also caused the drying to slow down.
In the present invention, as a result of earnestly examining the state of multifilament so as to make it difficult to generate a capillary structure that causes these defects of conventional high-density fabrics, particularly water-repellent high-density fabrics, it is long by twisting multifilament yarns. It is found that the capillary structure is broken, becomes smaller, or is difficult to make, and the present invention has low water absorption, quick drying, low-breathing, high-density fabric and good water repellency, and low breathability Succeeded in obtaining a high-density fabric.

While being a high-density fabric, not only water absorption is low, but also a fabric that dries quickly after water absorption is obtained. The low-breathable high-density fabric of the present invention can be used mainly for general clothing and uniforms.
When this woven fabric is subjected to a water repellent treatment, it becomes more difficult to get wet with water, and a low-breathing, high-density woven fabric with a faster drying speed can be obtained. Further, in this case, the water repellency of the water-repellent and low-breathing high-density fabric is particularly excellent in the frictional water repellency.
In the present invention, a twisted multifilament yarn is used for the purpose of suppressing the occurrence of a capillary structure or reducing the diameter of the capillary. However, in order to weave at a high density, a conventional woven fabric using a twisted multifilament yarn is used. In this way, large irregularities such as wrinkles and grainy irregularities do not appear on the surface, and the surface of the fabric has many fine irregularities that are difficult to break due to the twisted yarn structure. For this reason, it is difficult to form a smooth water film on the surface when water-repellent processing is performed, and the fine unevenness is firmly formed, so that the fine uneven structure is not easily broken even if worn or rubbed. It is also a feature of the present invention that excellent water repellency against friction, which has not been seen in the past, can be obtained.
The low-breathable high-density fabric of the present invention when subjected to water-repellent processing can be widely used for applications such as general clothing, surgical clothing, sheets, rain clothing, and tents.

Figure 1 is a “conceptual diagram of filament arrangement of untwisted or weakly twisted multifilament yarn” Figure 2 is a “conceptual diagram of the filament arrangement state of a strongly twisted multifilament yarn” Fig. 3 shows a conceptual diagram of surface irregularities seen from the filament side of a strongly twisted multifilament yarn (the irregularities are highlighted with a circle).

A specific method for breaking the capillary structure of a multifilament yarn composed of multifilaments or reducing the capillary diameter is to twist the yarn. Conventionally, the purpose of twisting a yarn has been widely performed in order to adjust the texture, generate wrinkles on the surface of the fabric, and obtain an appearance effect. However, nothing has been done to achieve the object as in the present invention.
In the present invention, a strongly twisted multifilament yarn is used, but when applied to a high-density fabric, the warp interval and the weft interval are extremely narrow, and the twisted multifilament yarn is used for the purpose as used conventionally. The shrinkage does not occur and the wrinkles are not generated on the fabric.
On the other hand, the multifilaments are twisted together by twisting. As a result, the capillaries are different from the capillaries in the parallel or weak parallel arrangement (Fig. 1) such as the capillaries formed by untwisted multifilaments and weakly twisted multifilaments. In an arrangement state (Fig. 2) as if cut off. Furthermore, the surface of the multifilament yarn is provided with irregularities having a size corresponding to the thickness of the filament yarn constituting the multifilament yarn (FIG. 3). This is different from untwisted multifilament yarn and weakly twisted multifilament yarn.

Although there is no restriction | limiting in particular in the method of twisting a thread | yarn, Twisting machines, such as a double twister, can be used.
A design twisting machine or the like for adjusting the surface irregularities using several multifilament yarns can also be used. Even when several multifilament yarns are twisted, it is preferable that each multifilament yarn has a predetermined twisted twisted yarn.
The unevenness on the surface of the fabric to obtain water repellency that is strong against strong friction when water repellent is more uneven than the one twisted with a twisting machine such as a double twister than the one twisted with a design. It is preferable because the structure is stable against pressure such as friction.
Even when a water-repellent and waterproof low-breathing high-density fabric is obtained, a single multifilament yarn twisted with a twisting machine such as a double twister becomes a dense low-breathing high-density fabric that is waterproof. It is preferable when it is desired to obtain also.

Since the fabric of the present invention has low air permeability, it is excellent in windproof properties when used in clothing.
Since this low-breathable fabric uses strong twisted yarns, it is difficult to form a capillary tube, and the capillary diameter is small and the amount of moisture retained is small.
Therefore, even if it gets wet with water, there is little feeling of wetness, and it will dry quickly even after washing. General clothing and especially uniform clothing are valuable as energy-saving materials.
In addition, since this low air-permeable high density fabric uses strong twisted yarn, it does not easily become wrinkles, and is excellent in wearability and handleability when used as clothing.
Furthermore, although this low breathable high density fabric uses high twisted yarn, it has a high density, so it does not show a textured appearance like a conventional strong twisted yarn fabric, and the yarn surface has small constituent filaments. Only fine irregularities corresponding to the diameter are generated, and the appearance is only smooth.

As a feature of the fabric, it has a low water retention amount after washing, and is easy to dehydrate when applied to a dehydrator after washing. Therefore, it is easy to dry, saves energy and contributes to environmental improvement.
Furthermore, when water repellent processing is performed, the fiber surface is coated with a water repellent, resulting in a lower interfacial tension on the fiber surface, less moisture held in the capillary tube, The attractive force of water becomes smaller and it becomes easier to remove with a dehydrator. Drying after washing is also faster for the same reason.
These properties are also utilized when worn as clothing. That is, since it is difficult for water to be retained during wearing in the rain, it is unlikely to become a conventional fabric that holds water and the surface gets wet with water, making it easier to attract water.

The plain weave and twill weave fabrics of the present invention and fabrics similar to these fabrics have a small gap between yarns, making it difficult to form capillaries between yarns. It is a structure with few threads. In order to reduce air permeability and increase windproof property, and to impart waterproofness by water repellency processing, plain fabrics, twill fabrics and fabrics with similar structures of the present invention are suitable. Yes.
Furthermore, in terms of density, in order to prevent the occurrence of wrinkles as in the case of conventional woven fabrics using strong twisted yarns, a dense structure woven fabric having a total cover factor of the warp and weft cover factors defined by the following formulas of 1500 or more is required At least necessary. Furthermore, 2000 or more dense structure textiles are preferable.
In addition to wind resistance, water repellency and waterproof properties that are resistant to friction can be obtained by increasing the density and imparting water repellency. By increasing the density of the cover factor of the entire woven fabric to about 2500 or more, the waterproofness of 250 mm or more required for clothing, umbrellas, and tents can be obtained.
In the case where water repellent processing is not performed, a low-breathing and high-density fabric excellent in drying properties of the present invention having an air permeability of 50 cc / cm ² / sec or less can be obtained by the same means.
The ratio of the strongly twisted yarn used in the woven fabric is preferably 50% or more in terms of the ratio calculated on the surface of the woven fabric using the woven fabric structure (structure chart), the yarn density, and the yarn thickness (corresponding to the yarn diameter). Preferably it is 65% or more. Most preferred is 100%.

Conventionally, strong twisted yarn has been used to make a textured texture, to adjust the texture, and to create an appearance.
The strong twisted yarn has a strong untwisting force (shrinkage), and has been used to make large irregularities and wrinkles on the surface of the fabric by making good use of this force and then untwisting and shrinking the fabric. The twisted yarn itself was used to create a textile appearance by making the yarn thick and thin.
In other words, the fabric design has also been devised in order to generate wrinkles and large irregularities on the fabric surface. In order to make the strong twisted yarns shrink and make it easy to generate wrinkles and irregularities, the yarn design was used to increase the inter-thread density, the fabric structure was devised to generate wrinkles, and the appearance was adjusted, and the texture of the fabric was adjusted. . In addition, it was used only for weft yarns to create a woven fabric with a tonal appearance. These conventional wrinkle-centered fabrics using strong twisted yarns have high air permeability as a result of generating gaps between the yarns.

In the present invention, as described above, the woven fabric is densified so as not to generate the untwisting force of the strong twisted yarn, and it is not used for generating the wrinkle as in the prior art. We devised to make it smaller and shorter. That is, the strongly twisted yarn fabric of the present invention is woven at a high density so that there is no gap between yarns so as not to shrink and generate wrinkles in the refining and dyeing processes after weaving the fabric.
As a result, we succeeded in suppressing the generation of voids by suppressing the generation of voids, incorporating the characteristic small-diameter short capillary structure of strong twisted yarn into the high-density fabric, and eliminating the disadvantages of the conventional high-density fabric into water. For the first time, we have succeeded in developing a high-density fabric that absorbs little water even when wet and quickly dries. In order to increase the density of the fabric so as not to generate wrinkles, 1500 or more is necessary and preferably 2000 or more when expressed by the fabric cover factor.

Conventional high-density fabrics are made using many multifilament yarns, especially ultrafine multifilament yarns.
Furthermore, in order to obtain a dense structure, most of the woven fabrics used are non-twisted yarns or weakly twisted yarns as long as they are twisted within a range that does not impair the weaving property.
There was no high-density fabric using strong twisted yarn as in the present invention.
In the present invention, it is difficult to form a capillary tube, the diameter of the formed capillary tube is reduced, water absorption is suppressed, and the twist coefficient of the yarn necessary for improving the drying property is 5100 or more, preferably 7000 or more, more preferably Is 10,000 or more.
When it is desired to obtain a high waterproof property by water repellent treatment, 25000 or less is preferable.

With respect to the thickness of the single yarn denier, a thicker one is preferred for the purpose of making it difficult to form a capillary structure or reducing the number of capillaries to reduce water absorption. On the other hand, in order to improve windproof properties, it is necessary to have a dense fabric structure, and for clothing, it is necessary to soften the fabric texture to be suitable for wearing. For these purposes, thinner threads are preferred.
For these reasons, the thickness of the yarn used in the present invention is preferably not less than 0.1 denier and not more than 3.5 denier. Preferred is a filament having a thickness of 0.4 denier or more and 2.2 denier or less.
Similarly, the thickness of the multifilament yarn to be used is finely woven for the purpose of increasing the waterproofness when the tissue is densely woven, does not create inter-structure voids, and is water repellent, and is worn as a clothing fabric. A thin thread is also preferable for the purpose of softening the texture. A thick thread is preferable for the purpose of not forming a large capillary structure between the threads.
For these reasons, yarns having a thickness of 30 denier or more and 150 denier or less are preferred in the present invention. Most preferred is a yarn having a thickness of 50 denier or more and 100 denier or less.
As for the thread shape, the processed thread type is preferable to the filament type in that the thread is distorted and it is difficult to form a capillary structure.
In order to obtain water repellency with friction durability, it is necessary to make a fine concavo-convex structure corresponding to the diameter of a strong yarn that is not broken even by friction.
In the present invention, the present inventors have found that twisted yarn is preferable for producing a strong fine uneven structure. From this point, it is preferable that the filament single yarn denier is thick. The preferred single yarn denier range is 0.3 denier or greater, more preferably 0.4 denier or greater, and most preferably 0.9 denier or greater.

Water repellency is required to obtain water repellency and waterproofness using the low-breathing and high-density fabric of the present invention, but no special water repellency is required. Water repellent processing using a silicone water repellent may be performed by a normal method.
Furthermore, there is no restriction | limiting in using together with an antistatic agent etc. as needed.
In implementation, in consideration of the fact that it is a high-density woven fabric and that a high-strength multifilament yarn is used, it has been performed conventionally, or a technique that a person having the technology would implement, It goes without saying that a combination of a penetrant for improving the penetration of the water repellent, and a reduction in the processing speed in order to increase the immersion time are taken.
By performing such normal water-repellent processing, water repellency and water resistance of 200 mm or more can be obtained.
In this case, it has been newly discovered that the product of the present invention can provide water repellency that is remarkably excellent in friction durability, which has not been conventionally obtained. The evaluation of the water-repellent friction durability described in the specification of the present application has revealed that a high friction-resistant water-repellent property not found in conventional water-repellent high-density fabrics can be obtained. By entering and exiting filaments made by twisted yarns (made by swirling), a strong fine uneven structure of yarns made according to the diameter of single filaments constituting multifilament yarns is formed on the fabric surface as it is. This is considered to be the cause. (See Figure 3)
The new water repellent effect with excellent friction durability is more preferable as the thickness of the single yarn filament is larger. A more preferable thickness is 0.4 denier or more, most preferably 0.9 denier or more.
The water repellency excellent in the friction durability referred to in the present invention is 100 times or more as evaluated by the following friction durability evaluation method.
When the drying property is 10 or less, the wet feeling is reduced, and further drying can be performed in an energy-saving manner.

The multifilament yarn that can be used in the present invention can be any multifilament yarn of synthetic fiber, semi-synthetic fiber, and regenerated fiber. Hydrophobic multifilament yarn is preferable, and among them, polyester multifilament yarn, polyamide multifilament yarn, and polypropylene multifilament yarn can be preferably used.

In documents such as the present invention specification, etc. The water repellency was evaluated by the JIS L 1092 spray method.
2. Water repellency Durable water repellency is to place 0.3 cc of water droplets on the fabric, lay a thick bamboo chopstick on the side, rub the water droplets strongly, and the water droplets will not move on the fabric (after the water droplets remain) Evaluated by the number of times.
3. The water pressure resistance was measured by the low water pressure method described in JIS L 1092 A.
4). The air permeability was measured by the fragile method described in JIS L 1079.
5. The cover factor in the warp direction was calculated by the number of warps per inch * √warp denier.
6). The cover factor in the weft direction was calculated by the number of wefts per inch * √weft denier.
7). The cover factor for the entire fabric was calculated as the sum of the cover factor in the warp direction and the cover factor in the weft direction.
8). Water absorption is measured after immersing a 10cm square fabric in water, holding it lightly with newspaper and removing excess water,
The water absorption per fabric weight was evaluated.
9. Immediately after measuring the water absorption rate, the drying property was dehydrated for 5 minutes with a dewatering basket of a national washing machine (NA-W45A1), and then evaluated by the water absorption.
10. The number of twisted yarns was indicated by the number of twists per meter (times / M).
11. The twist coefficient of the yarn was calculated by the number of twisted yarns per meter (times / M) * √denier.

The present invention will be specifically described below with reference to examples.

Weaving in a normal manner using strong twisted yarn of 75 denier and 72 filament Woolley filament yarn for warp and weft, 2000 times / M (W warp is S twist yarn, weft is S twist yarn and Z twist yarn alternately), Refining, dyeing, and finishing were performed to produce the low-breathing high-density mat mat plain fabric of the present invention. The warp density of the product of the present invention was 216 per inch, and the weft density was 86.
The twist coefficient of the strongly twisted multifilament yarn determined by calculation was 17321, and the cover factor of the entire woven fabric was 2615.
For comparison, we used the same 75 denier, 72 filament Woolley filament yarn as in the present invention. Weft was weakly twisted at 300 T / M to avoid weaving troubles, and the yarn was not twisted. A high density plain woven fabric for comparison was prepared by weaving, scouring, and dyeing in the usual manner, using in the state of untwisted yarn. The comparative product had a warp density of 132 per inch and a weft density of 102.
The warp twist coefficient obtained by calculation was 2598, the weft twist coefficient was 0, and the cover factor of the entire fabric was 2026.
The water absorption and drying properties of the product of the present invention and the comparative product are shown in the following table.
The product of the present invention has less water absorption than the comparative product and is excellent in drying properties.

The woven fabric of Example 1 (the woven fabric of the present invention and the comparative woven fabric) was subjected to a water repellent treatment with a fluorine-based water repellent (Asahi Guard AG710, 7% aqueous solution manufactured by Asahi Glass Co., Ltd.) by a normal method, and then a calendar treatment was performed. Carried out.
The following table shows the water pressure resistance, water repellency, and friction durability water repellency of the water-repellent product of the present invention and the water-repellent comparative product.
The product of the present invention has a new water-repellent friction durability and water repellency that is remarkably superior to the comparative product.

Instead of the 75 denier, 72 Woolley filament yarn used in Example 1, a 75 twisted, 144 filament Woolley filament yarn is a 2000 T / M S twist yarn, and a weft yarn is the same as a warp yarn. The low-breathing and high-density warp plain woven fabric of the present invention is produced by weaving, scouring, dyeing, and finishing in the same manner as in Example 1 by alternately using high-twisted yarns of S-twisted yarn and Z-twisted yarn obtained by twisting 1500 T / M yarn. It was created. The warp density of the product of the present invention was 224 per inch, and the weft density was 84.
The twist coefficient of the warp strongly twisted multifilament yarn determined by calculation was 17321, the twist coefficient of the weft strongly twisted multifilament yarn was 12990, and the cover factor of the entire fabric was 2667.
The water absorption and drying properties of the product of the present invention and the comparative product (comparative product of Example 1) are shown in the following table.
The product of the present invention is slightly larger in water absorbency because the single yarn denier is thinner than that of Example 1, and the dryness thereof is slightly inferior to that of Example 1 of the present invention, but is superior to that of the comparative product.

The fabric of the present invention obtained in Example 3 was water-repellent and calendered in the same manner as in Example 2 to produce a water-repellent product of the present invention.
The following table shows the water pressure resistance, water repellency and friction durability water repellency of the product of the present invention.
The comparative product is the same as the comparative product of Example 2.
Since the single yarn denier of the present invention is thinner than that of Example 2, the water pressure resistance is improved and the friction durability and water repellency are much better than the comparative product.

Low breathability fabric with low water absorption and excellent drying properties by the product of the present invention, water absorption is further reduced by performing water repellent processing, quick drying properties are further improved, and low air permeability with excellent friction durability and water repellency A high density fabric is obtained. These woven fabrics are expected to be used in a wide range of fields such as garments such as tents and umbrellas as well as clothing such as general clothing, uniform clothing, and sports clothing.
In particular, the water-repellent processed product has a friction-resistant and water-repellent water repellency that has never been seen before, so the product of the present invention has a new water-repellent functional product in the sports and uniform fields where water repellency is required. It is expected to lead to provision.

The present invention relates to a low-breathable, high-density fabric used for clothing and sundries used in living spaces.

Conventional high-density fabrics are made using many multifilaments, especially ultrafine multifilament yarns.
Furthermore, most yarns used for the purpose of obtaining a dense structure are usually non-twisted yarns or high-density multifilament fabrics using weakly twisted yarns that are twisted within a range that does not impair the weaving property.
Therefore, in a conventional high-density fabric using multifilament yarn, a large number of large capillaries made of untwisted or weakly twisted multifilaments are made in the fabric.
When these capillaries absorb water by capillarity, the water held in the capillaries is difficult to remove because of the dense structure, and it has been a drawback that it is difficult to dry.
Preventing this drawback and shortening or eliminating the drying time after washing is a big problem in the market because it leads to energy saving.
The present invention relates to a technique and a product for eliminating the disadvantages of a conventional high-density fabric using a strongly twisted multifilament yarn.
A search was made for known patents relating to high-density fabrics using strongly twisted multifilament yarns, and among the searched patents, two similar patent documents were compared with the present invention.

Among the 13 patents that were simply searched and searched with Japanese Patent Laid-Open No. 11-302944 “twisting coefficient * high density”, the related document was Japanese Patent Laid-Open No. 11-302944 “Method for producing high-density fabric”. This reference is a patent relating to providing a high-density fabric having a high water pressure resistance and an excellent washing durability. In this reference, a high-density fabric is disclosed in which a yarn having a twist coefficient of 2000 to 5000 and an ultrafine multifilament of 0.5 denier or less is used for the warp. However, the purpose of using a yarn having a twist coefficient of 2000 to 5000 in this example is that when weaving at a high density using a fluid jet weaving machine, when weaving warp without glue, the ultra-fine filament breaks single yarn, and fluff This is to prevent the weaving from being significantly reduced. The purpose of using high-strength multifilament yarn in the low-breathing and high-density fabric of the present invention is to change many long capillary structures composed of multifilaments to short capillary structures, and to reduce the gaps and prevent water penetration Therefore, the purpose is completely different from the patent of this reference. Furthermore, the value of the twisting coefficient indicating the degree of the twisted yarn is also defined as 2000 to 5000 in the present example, and in the embodiment, a twisted yarn of 300 T / M (twisting factor 3146) is implemented, whereas the present invention is The twist coefficient is 5100 or more, preferably 7000 or more, which are different. Furthermore, the patent configuration of Patent Document 1 of this reference is completely different from the present invention, and no description suggesting the patent configuration of the present invention is found in this reference. Of the 26 patents that were simply searched for in Japanese Patent Application Laid-Open No. 2001-140115 “Water Repellent * High Density * Strong Twist * Textile”, a related document is “Waterproof Raincoat” of Japanese Patent Application Laid-Open No. 2001-140115. In this example, a fabric with a water resistance of 300 mm or more is used for the part where raindrops falling vertically when worn are at an angle of 45 degrees or more, and the air permeability is 50 cc / cm 2 / second for the other parts. This patent relates to a highly breathable rain gown using the above water-repellent fabric. In this example, a strong twisted yarn woven fabric is exemplified as an example of a highly breathable fabric having an air permeability of 50 cc / cm 2 / sec or more, and a rain gown using this strong twisted yarn woven fabric is not easily wrinkled and has excellent portability. It is described. It is also described that the washing durability is excellent. The water-repellent strong twisted yarn fabric used in a part of the rain garment is a water-repellent processed twisted georgette fabric processed by an ordinary method, and is a known fabric using a strong twisted yarn that has no novelty. In Example 1 of this reference, a twisted woven fabric having a twisted number (twisted number) of 2700 times / M is used, and the twisting factor of 5000 or more of the present invention (twisted yarn number of 2700 times / M and the used yarn of 50 denier) The calculated twist coefficient corresponds to 19092), but the air permeability of the strongly twisted yarn fabric described in this example is 180 cc / cm 2 / second, and the air permeability in the claims is also 50 cc / cm 2 / second or more. This is different from the low breathability fabric of 50 cc / cm 2 / sec or less of the present invention. The fabric cover factor of the strongly twisted yarn fabric described in this example is 1485 when calculated from the denier and yarn density in the description example, which is different from the fabric cover factor 1500 or more of the present invention. Furthermore, the purpose of using the strong twisted multifilament yarn in the low breathable high density fabric of the present invention is to change a large number of long capillary structures composed of multifilaments to short capillary structures, to reduce gaps and prevent water penetration. The purpose of this patent is completely different from that of the patent of this reference. Furthermore, the patent document 2 of this reference is completely different from the invention of the present application, and no description suggesting the patent structure of the present invention is found in this reference.

Conventional high-density fabrics are made using many multifilament yarns, especially ultrafine multifilament yarns.
Furthermore, for the purpose of obtaining a dense structure, a non-twisted yarn is usually used to the extent that it is twisted within a range that does not impair the weaving property.
Therefore, the conventional high-density fabric using multifilament yarn has a structure in which a large number of large capillaries made of untwisted or weakly twisted multifilament yarn are formed in the fabric.
Once water is absorbed into these capillaries by capillary action or external pressure, the water is held inside the capillaries because of its dense structure, and it is difficult to remove and remains water-retained, making it difficult to dry. It was a drawback.
Preventing this phenomenon, shortening the drying time after washing, or making it unnecessary can improve the feeling of wearing and also improve the drying efficiency and lead to the omission of energy. There was a great demand.
The high-density fabric of the present invention is a low-breathing high-density fabric excellent in drying properties designed to reduce the capillary or make as little as possible, and a water-repellent water-repellent property obtained by water-repellent processing It is a low breathable high density fabric.
The low-breathing high-density fabric referred to in the present invention includes plain fabrics, twill fabrics and fabrics having a similar structure with a fabric cover factor of 1500 or more and a breathability of 50 cc / cm ² / sec or less.

In woven fabrics using untwisted multifilament yarns without twists and low twist multifilament yarns with few twists, the filament yarns constituting the yarns are converged in parallel or close to each other.
That is, many long capillaries are formed in the fabric. When weaving at a high density, even during the scouring and dyeing process, the tissue constraints are large, and the multifilament is disturbed and the capillary structure is less likely to break, resulting in a large number of capillary structures remaining in the fabric. Composed.
Since these capillary structures are high density fabrics, they are dense and difficult to penetrate into the fabric. In particular, when the surface of the multifilament becomes more hydrophobic due to water-repellent processing or the like, water penetration becomes more difficult. Utilizing this property, conventional high-density fabrics are used as waterproof fabrics.

As mentioned above, water-repellent high-density fabrics using conventional multifilament yarns are difficult to infiltrate water, but once water is infiltrated due to pressure during use such as wearing, the reverse There was a drawback that water was held in the capillary tube, making drying difficult. The low air permeability due to the high density also caused the drying to slow down.
In the present invention, as a result of earnestly examining the state of multifilament so as to make it difficult to generate a capillary structure that causes these defects of conventional high-density fabrics, particularly water-repellent high-density fabrics, it is long by twisting multifilament yarns. It is found that the capillary structure is broken, becomes smaller, or is difficult to make, and the present invention has low water absorption, quick drying, low-breathing, high-density fabric and good water repellency, and low breathability Succeeded in obtaining a high-density fabric.

While being a high-density fabric, not only water absorption is low, but also a fabric that dries quickly after water absorption is obtained. The low-breathable high-density fabric of the present invention can be used mainly for general clothing and uniforms.
When this woven fabric is subjected to a water repellent treatment, it becomes more difficult to get wet with water, and a low-breathing, high-density woven fabric with a faster drying speed can be obtained. Further, in this case, the water repellency of the water-repellent and low-breathing high-density fabric is particularly excellent in the frictional water repellency.
In the present invention, a twisted multifilament yarn is used for the purpose of suppressing the occurrence of a capillary structure or reducing the diameter of the capillary. However, in order to weave at a high density, a conventional woven fabric using a twisted multifilament yarn is used. In this way, large irregularities such as wrinkles and grainy irregularities do not appear on the surface, and the surface of the fabric has many fine irregularities that are difficult to break due to the twisted yarn structure. For this reason, it is difficult to form a smooth water film on the surface when water-repellent processing is performed, and the fine unevenness is firmly formed, so that the fine uneven structure is not easily broken even if worn or rubbed. It is also a feature of the present invention that excellent water repellency against friction, which has not been seen in the past, can be obtained.
The low-breathable high-density fabric of the present invention when subjected to water-repellent processing can be widely used for applications such as general clothing, surgical clothing, sheets, rain clothing, and tents.

Figure 1 is a “conceptual diagram of filament arrangement of untwisted or weakly twisted multifilament yarn” Figure 2 is a “conceptual diagram of the filament arrangement state of a strongly twisted multifilament yarn” Fig. 3 shows a conceptual diagram of surface irregularities seen from the filament side of a strongly twisted multifilament yarn (the irregularities are highlighted with a circle).

A specific method for breaking the capillary structure of a multifilament yarn composed of multifilaments or reducing the capillary diameter is to twist the yarn. Conventionally, the purpose of twisting a yarn has been widely performed in order to adjust the texture, generate wrinkles on the surface of the fabric, and obtain an appearance effect. However, nothing has been done to achieve the object as in the present invention.
In the present invention, a strongly twisted multifilament yarn is used, but when applied to a high-density fabric, the warp interval and the weft interval are extremely narrow, and the twisted multifilament yarn is used for the purpose as used conventionally. The shrinkage does not occur and the wrinkles are not generated on the fabric.
On the other hand, the multifilaments are twisted together by twisting. As a result, the capillaries are different from the capillaries in the parallel or weak parallel arrangement (Fig. 1) such as the capillaries formed by untwisted multifilaments and weakly twisted multifilaments. In an arrangement state (Fig. 2) as if cut off. Furthermore, the surface of the multifilament yarn is provided with irregularities having a size corresponding to the thickness of the filament yarn constituting the multifilament yarn (FIG. 3). This is different from untwisted multifilament yarn and weakly twisted multifilament yarn.

Although there is no restriction | limiting in particular in the method of twisting a thread | yarn, Twisting machines, such as a double twister, can be used.
A design twisting machine or the like for adjusting the surface irregularities using several multifilament yarns can also be used. Even when several multifilament yarns are twisted, it is preferable that each multifilament yarn has a predetermined twisted twisted yarn.
The unevenness on the surface of the fabric to obtain water repellency that is strong against strong friction when water repellent is more uneven than the one twisted with a twisting machine such as a double twister than the one twisted with a design. It is preferable because the structure is stable against pressure such as friction.
Even when a water-repellent and waterproof low-breathing high-density fabric is obtained, a single multifilament yarn twisted with a twisting machine such as a double twister becomes a dense low-breathing high-density fabric that is waterproof. It is preferable when it is desired to obtain also.

Since the fabric of the present invention has low air permeability, it is excellent in windproof properties when used in clothing.
Since this low-breathable fabric uses strong twisted yarns, it is difficult to form a capillary tube, and the capillary diameter is small and the amount of moisture retained is small.
Therefore, even if it gets wet with water, there is little feeling of wetness, and it will dry quickly even after washing. General clothing and especially uniform clothing are valuable as energy-saving materials.
In addition, since this low air-permeable high density fabric uses strong twisted yarn, it does not easily become wrinkles, and is excellent in wearability and handleability when used as clothing.
Furthermore, although this low breathable high density fabric uses high twisted yarn, it has a high density, so it does not show a textured appearance like a conventional strong twisted yarn fabric, and the yarn surface has small constituent filaments. Only fine irregularities corresponding to the diameter are generated, and the appearance is only smooth.

As a feature of the fabric, it has a low water retention amount after washing, and is easy to dehydrate when applied to a dehydrator after washing. Therefore, it is easy to dry, saves energy and contributes to environmental improvement.
Furthermore, when water repellent processing is performed, the fiber surface is coated with a water repellent, resulting in a lower interfacial tension on the fiber surface, less moisture held in the capillary tube, The attractive force of water becomes smaller and it becomes easier to remove with a dehydrator. Drying after washing is also faster for the same reason.
These properties are also utilized when worn as clothing. That is, since it is difficult for water to be retained during wearing in the rain, it is unlikely to become a conventional fabric that holds water and the surface gets wet with water, making it easier to attract water.

The plain weave and twill weave fabrics of the present invention and fabrics similar to these fabrics have a small gap between yarns, making it difficult to form capillaries between yarns. It is a structure with few threads. In order to reduce air permeability and increase windproof property, and to impart waterproofness by water repellency processing, plain fabrics, twill fabrics and fabrics with similar structures of the present invention are suitable. Yes.
Furthermore, in terms of density, in order to prevent the occurrence of wrinkles as in the case of conventional woven fabrics using strong twisted yarns, a dense structure woven fabric having a total cover factor of the warp and weft cover factors defined by the following formulas of 1500 or more is required At least necessary. Furthermore, 2000 or more dense structure textiles are preferable.
In addition to wind resistance, water repellency and waterproof properties that are resistant to friction can be obtained by increasing the density and imparting water repellency. By increasing the density of the cover factor of the entire woven fabric to about 2500 or more, the waterproofness of 250 mm or more required for clothing, umbrellas, and tents can be obtained.
In the case where water repellent processing is not performed, a low-breathing and high-density fabric excellent in drying properties of the present invention having an air permeability of 50 cc / cm ² / sec or less can be obtained by the same means.
The ratio of the strongly twisted yarn used in the woven fabric is preferably 50% or more in terms of the ratio calculated on the surface of the woven fabric using the woven fabric structure (structure chart), the yarn density, and the yarn thickness (corresponding to the yarn diameter). Preferably it is 65% or more. Most preferred is 100%.

Conventionally, strong twisted yarn has been used to make a textured texture, to adjust the texture, and to create an appearance.
The strong twisted yarn has a strong untwisting force (shrinkage), and has been used to make large irregularities and wrinkles on the surface of the fabric by making good use of this force and then untwisting and shrinking the fabric. The twisted yarn itself was used to create a textile appearance by making the yarn thick and thin.
In other words, the fabric design has also been devised in order to generate wrinkles and large irregularities on the fabric surface. In order to make the strong twisted yarns shrink and make it easy to generate wrinkles and irregularities, the yarn design was used to increase the inter-thread density, the fabric structure was devised to generate wrinkles, and the appearance was adjusted, and the texture of the fabric was adjusted. . In addition, it was used only for weft yarns to create a woven fabric with a tonal appearance. These conventional wrinkle-centered fabrics using strong twisted yarns have high air permeability as a result of generating gaps between the yarns.

In the present invention, as described above, the woven fabric is densified so as not to generate the untwisting force of the strong twisted yarn, and it is not used for generating the wrinkle as in the prior art. We devised to make it smaller and shorter. That is, the strongly twisted yarn fabric of the present invention is woven at a high density so that there is no gap between yarns so as not to shrink and generate wrinkles in the refining and dyeing processes after weaving the fabric.
As a result, we succeeded in suppressing the generation of voids by suppressing the generation of voids, incorporating the characteristic small-diameter short capillary structure of strong twisted yarn into the high-density fabric, and eliminating the disadvantages of the conventional high-density fabric into water. For the first time, we have succeeded in developing a high-density fabric that absorbs little water even when wet and quickly dries. In order to increase the density of the fabric so as not to generate wrinkles, 1500 or more is necessary and preferably 2000 or more when expressed by the fabric cover factor.

Conventional high-density fabrics are made using many multifilament yarns, especially ultrafine multifilament yarns.
Furthermore, in order to obtain a dense structure, most of the woven fabrics used are non-twisted yarns or weakly twisted yarns as long as they are twisted within a range that does not impair the weaving property.
There was no high-density fabric using strong twisted yarn as in the present invention.
In the present invention, it is difficult to form a capillary tube, the diameter of the formed capillary tube is reduced, water absorption is suppressed, and the twist coefficient of the yarn necessary for improving the drying property is 5100 or more, preferably 7000 or more, more preferably Is 10,000 or more.
When it is desired to obtain a high waterproof property by water repellent treatment, 25000 or less is preferable.

With respect to the thickness of the single yarn denier, a thicker one is preferred for the purpose of making it difficult to form a capillary structure or reducing the number of capillaries to reduce water absorption. On the other hand, in order to improve windproof properties, it is necessary to have a dense fabric structure, and for clothing, it is necessary to soften the fabric texture to be suitable for wearing. For these purposes, thinner threads are preferred.
For these reasons, the thickness of the yarn used in the present invention is preferably not less than 0.1 denier and not more than 3.5 denier. Preferred is a filament having a thickness of 0.4 denier or more and 2.2 denier or less.
Similarly, the thickness of the multifilament yarn to be used is finely woven for the purpose of increasing the waterproofness when the tissue is densely woven, does not create inter-structure voids, and is water repellent, and is worn as a clothing fabric. A thin thread is also preferable for the purpose of softening the texture. A thick thread is preferable for the purpose of not forming a large capillary structure between the threads.
For these reasons, yarns having a thickness of 30 denier or more and 150 denier or less are preferred in the present invention. Most preferred is a yarn having a thickness of 50 denier or more and 100 denier or less.
As for the thread shape, the processed thread type is preferable to the filament type in that the thread is distorted and it is difficult to form a capillary structure.
In order to obtain water repellency with friction durability, it is necessary to make a fine concavo-convex structure corresponding to the diameter of a strong yarn that is not broken even by friction.
In the present invention, the present inventors have found that twisted yarn is preferable for producing a strong fine uneven structure. From this point, it is preferable that the filament single yarn denier is thick. The preferred single yarn denier range is 0.3 denier or greater, more preferably 0.4 denier or greater, and most preferably 0.9 denier or greater.

Water repellency is required to obtain water repellency and waterproofness using the low-breathing and high-density fabric of the present invention, but no special water repellency is required. Water repellent processing using a silicone water repellent may be performed by a normal method.
Furthermore, there is no restriction | limiting in using together with an antistatic agent etc. as needed.
In implementation, in consideration of the fact that it is a high-density woven fabric and that a high-strength multifilament yarn is used, it has been performed conventionally, or a technique that a person having the technology would implement, It goes without saying that a combination of a penetrant for improving the penetration of the water repellent, and a reduction in the processing speed in order to increase the immersion time are taken.
By performing such normal water-repellent processing, water repellency and water resistance of 200 mm or more can be obtained.
In this case, it has been newly discovered that the product of the present invention can provide water repellency that is remarkably excellent in friction durability, which has not been conventionally obtained. The evaluation of the water-repellent friction durability described in the specification of the present application has revealed that a high friction-resistant water-repellent property not found in conventional water-repellent high-density fabrics can be obtained. By entering and exiting filaments made by twisted yarns (made by swirling), a strong fine uneven structure of yarns made according to the diameter of single filaments constituting multifilament yarns is formed on the fabric surface as it is. This is considered to be the cause. (See Figure 3)
The new water repellent effect with excellent friction durability is more preferable as the thickness of the single yarn filament is larger. A more preferable thickness is 0.4 denier or more, most preferably 0.9 denier or more.
The water repellency excellent in the friction durability referred to in the present invention is 100 times or more as evaluated by the following friction durability evaluation method.
When the drying property is 10 or less, the wet feeling is reduced, and further drying can be performed in an energy-saving manner.

The multifilament yarn that can be used in the present invention can be any multifilament yarn of synthetic fiber, semi-synthetic fiber, and regenerated fiber. Hydrophobic multifilament yarn is preferable, and among them, polyester multifilament yarn, polyamide multifilament yarn, and polypropylene multifilament yarn can be preferably used.

In documents such as the present invention specification, etc. The water repellency was evaluated by the JIS L 1092 spray method.
2. Water repellency Durable water repellency is to place 0.3 cc of water droplets on the fabric, lay a thick bamboo chopstick on the side, rub the water droplets strongly, and the water droplets will not move on the fabric (after the water droplets remain) Evaluated by the number of times.
3. The water pressure resistance was measured by the low water pressure method described in JIS L 1092 A.
4). The air permeability was measured by the fragile method described in JIS L 1079.
5. The cover factor in the warp direction was calculated by the number of warps per inch * √warp denier.
6). The cover factor in the weft direction was calculated by the number of wefts per inch * √weft denier.
7). The cover factor for the entire fabric was calculated as the sum of the cover factor in the warp direction and the cover factor in the weft direction.
8). The water absorption was measured by immersing a 10 cm square woven fabric in water and then holding it lightly with newspaper to remove excess water, measuring it, and measuring the water absorption per fabric weight.
9. Immediately after measuring the water absorption rate, the drying property was dehydrated for 5 minutes with a dewatering basket of a national washing machine (NA-W45A1), and then evaluated by the water absorption.
10. The number of twisted yarns was indicated by the number of twists per meter (times / M).
11. The twist coefficient of the yarn was calculated by the number of twisted yarns per meter (times / M) * √denier.

The present invention will be specifically described below with reference to examples and reference examples .

Reference example 1

Weaving in a normal manner using strong twisted yarn of 75 denier and 72 filament Woolley filament yarn for warp and weft, 2000 times / M (W warp is S twist yarn, weft is S twist yarn and Z twist yarn alternately), Refining, dyeing, and finishing were performed to prepare a low-breathing high-density warp mat plain fabric of this reference example . The warp density of this reference product was 216 per inch, and the weft density was 86.
The twist coefficient of the strongly twisted multifilament yarn determined by calculation was 17321, and the cover factor of the entire woven fabric was 2615.
For comparison, we used the same 75 denier, 72 filament Woolley filament yarn as this reference product. Weft was weakly twisted at 300 T / M to avoid weaving problems, and the yarn was not twisted. A high density plain woven fabric for comparison was prepared by weaving, scouring, and dyeing in the usual manner, using in the state of untwisted yarn. The comparative product had a warp density of 132 per inch and a weft density of 102.
The warp twist coefficient obtained by calculation was 2598, the weft twist coefficient was 0, and the cover factor of the entire fabric was 2026.
The water absorption and drying properties of this reference product and comparative product are shown in the following table.
This reference product has less water absorption than the comparative product and is excellent in drying properties.

The fabric of Reference Example 1 (this reference fabric, comparative fabric) is subjected to a water repellent treatment with a fluorine-based water repellent (Asahi Guard AG710, 7% aqueous solution manufactured by Asahi Glass Co., Ltd.) in the usual manner, and then subjected to a calendar treatment. Carried out.
The following table shows the water pressure resistance, water repellency, and friction durability water repellency of the water-repellent product of the present invention and the water-repellent comparative product.
The product of the present invention has a new water-repellent friction durability and water repellency that is remarkably superior to the comparative product.

Reference example 2

Instead of the 75 denier, 72 Woolley filament yarn used in Reference Example 1 , a 75 twist, 144 filament Woolley filament yarn is a 2000 T / M S twist yarn and a warp yarn is the same as a warp yarn. The low-breathing, high-density warp flat of this reference product is made by weaving, scouring, dyeing, and finishing in the same manner as in Reference Example 1 by alternately using high-twisted yarns of S twisted yarn and Z twisted yarn with 1500 T / M twisted yarn. A woven fabric was created. The warp density of this reference product was 224 per inch, and the weft density was 84.
The twist coefficient of the warp strongly twisted multifilament yarn determined by calculation was 17321, the twist coefficient of the weft strongly twisted multifilament yarn was 12990, and the cover factor of the entire fabric was 2667.
The water absorption and drying properties of this reference product and comparative product (comparative product of Reference Example 1 ) are shown in the following table.
This reference product is slightly larger absorbent because single yarn denier thin compared to Reference Example 1, that amount drying properties are better than Although slightly inferior to the reference product of Example 1 comparative.

The fabric of this reference example obtained in Reference Example 2 was water-repellent and calendered in the same manner as in Example 1 to produce a water-repellent product of the present invention.
The following table shows the water pressure resistance, water repellency and friction durability water repellency of the product of the present invention.
The comparative product is the same as the water-repellent comparative product of Example 1 .
Since the single yarn denier of the present invention is thinner than that of Example 1 , the water pressure resistance is improved and the friction durability and water repellency are remarkably superior to the water repellency comparison product .

Low breathability fabric with low water absorption and excellent drying properties by the product of the present invention, water absorption is further reduced by performing water repellent processing, quick drying properties are further improved, and low air permeability with excellent friction durability and water repellency A high density fabric is obtained. These woven fabrics are expected to be used in a wide range of fields such as garments such as tents and umbrellas as well as clothing such as general clothing, uniform clothing, and sports clothing.
In particular, the water-repellent processed product has a friction-resistant and water-repellent water repellency that has never been seen before, so the product of the present invention has a new water-repellent functional product in the sports and uniform fields where water repellency is required. It is expected to lead to provision.

Claims (4)

Low breathability high density plain fabric and plain fabric-like woven fabric with excellent air-drying performance of 50cc / cm ² / sec or less using multifilament yarns with a twist coefficient of 5100 or more and a fabric cover factor of 1500 or more Low breathability high density twill fabric and twill fabric similar to twill woven fabric with excellent breathability of 50cc / cm ² / sec or less using a multifilament yarn having a twist coefficient of 5100 or more and a fabric cover factor of 1500 or more   A water-repellent low-breathing high-density plain fabric and a plain fabric-like fabric excellent in friction durability obtained by subjecting the low-breathing high-density plain fabric and the plain-fabric-like fabric according to claim 1 to water repellency. The water-repellent low-breathing high-density twill fabric and twill-like fabric obtained by subjecting the low-breathing high-density twill fabric and twill-like fabric to the water-repellent finish according to claim 2 and excellent in friction durability.

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