TW201331436A - Low air-permeable high-density woven fabric - Google Patents

Abstract

Provided is a low air-permeable high-density woven fabric that is less likely to get wet even in the rain and needs only a short drying time after getting wet or being washed. The low air-permeable high-density woven fabric is obtained by applying water-repellent treatment to a woven fabric containing high twisted yarns with a twist coefficient of 5100 or more in a proportion of 50% or more of the surface area of the woven fabric and has a air-permeability of 50 cc/cm<SP>2</SP>/sec or less, a cover factor of 1500 or more, and a rub-resistant water repellency of 100 or more.

Description

Hyponic high density fabric

BACKGROUND OF THE INVENTION 1. Field of the Invention This invention relates to a high density fabric for use in clothing applications or in the use of bulk spaces in living spaces, and more particularly to a low density fabric having a low air permeability using a strong multifilament fiber yarn.

Yarns which have been conventionally used for the purpose of obtaining a dense structure are generally almost high-density multifilament fabrics which use a twistless yarn or a weakly twisted yarn which can be creped within a range which does not impede the texture. In a woven fabric using a low-twist multifilament fiber yarn 1 which is free of twisted multifilament fiber yarns and has a small number of turns, the monofilament fiber yarns constituting the yarn are bundled in parallel or nearly parallel with each other. In the state of the formation, a plurality of long capillaries 1a are formed on the fabric (see Fig. 1). In the case of high-density weaving, even in the process of scouring or dyeing, the capillary structure is less damaged due to the greater binding of the structure and the disorder of the multifilament fibers, and as a result, most of the capillaries will remain in the residue. It is composed in the state of the fabric. Since these capillaries are constructed of high density fabrics, they are relatively dense and do not readily allow water to penetrate into the interior of the fabric. In particular, in the case where the surface of the multifilament fiber is made more hydrophobic by water repellent processing or the like, the penetration of water becomes more difficult. Conventional high-density fabrics are utilized as an defense using this property. Water-based fabric.

As described above, the conventional multifilament fiber yarn, especially the water-repellent high-density fabric, is used, and although the water is not easily impregnated, once the water is soaked by application of pressure or the like in the use of wearing or the like, the water is contained in the capillary. There are disadvantages that make drying difficult. Because of its high density, the air permeability is low, which also causes delay drying. It is a major issue in the art to improve such shortcomings and to shorten or eliminate the drying time required after washing.

On the other hand, as a high-density woven fabric using a strong multifilament fiber yarn, for example, Japanese Laid-Open Patent Publication No. Hei 11-302944 and "Waterproof Raincoat" disclosed in "Manufacturing Method of High Density Fabric" have been known. Japanese Laid-Open Patent Publication No. 2001-140115.

A high-density fabric having high water-resistance performance excellent in washing durability, which uses an ultrafine multifilament fiber of 0.5 denier or less and a twist coefficient of 2000, is disclosed in Japanese Laid-Open Patent Publication No. H11-302944. High-density fabrics up to 5,000 yarns. However, the high-density fabric is used to prevent the filaments from being broken by the ultrafine monofilament fibers, and the pile yarn is generated, although the warp yarn is woven in a non-paste manner in the case of being woven into a high density using a fluid jet loom. Although the texture is remarkably lowered, it does not solve the problem of the conventional high-density fabric which removes the water retention in the capillary and shortens the drying time required after washing.

Further, Japanese Laid-Open Patent Publication No. 2001-140115 discloses a portion in which a raindrop that is vertically dropped during wearing is dripped at a large angle of 45 degrees or more, and a cloth having a water resistance of 300 mm or more is used, and in other portions. A highly ventilated raincoat using a water-repellent fabric of a strong crepe fabric having a degree of ventilation of 50 cc/cm ² or more is used. However, in the case of the high-density fabric, the problem of the conventional high-density fabric which removes the water retention in the capillary and shortens the drying time required after washing cannot be solved.

The object of the present invention is to eliminate the disadvantages of the above-mentioned conventional high-density fabric by using a strong multifilament fiber yarn to provide a reduction or an attempt to minimize the dryness of the capillary and to perform water-repellent processing. A water-permeable, low-ventilation, high-density fabric that is excellent in frictional water repellency.

Therefore, the inventors of the present invention have carefully reviewed the ideal state of the multifilament fiber in order to make it difficult to produce a capillary structure of a conventional high-density fabric, especially a water-repellent high-density fabric, and found that it can be The silk fibers are creped to break, or to reduce, or to create, a longer capillary structure, so as to complete the invention. That is, the majority of the long capillary structure composed of the multifilament fibers is changed into a shorter capillary structure by using a strong multifilament fiber yarn, and a low air permeability high density which reduces the gap to prevent water penetration is formed. Fabric.

Here, the low-ventilation high-density woven fabric of the present invention is composed of a low-ventilating high-density woven fabric in which 50% or more of the area of the surface of the woven fabric is made of a fabric composed of a strong crepe yarn having a 捻 coefficient of 5100 or more. Water processing was carried out to obtain a gas permeability of 50 cc/cm ² /sec or less, a fabric covering factor of 1,500 or more, and a friction durability water repellency of 100 or more.

Preferably, the low-ventilation high-density fabric is composed of: 50% or more of the area of the surface of the fabric is composed of a hydrophobic multifilament fiber crepe yarn having a twist coefficient of 7,000 to 25,000, and the thickness of the strong twist yarn is 30 to 150 denier, the monofilament constituting the strong crepe is 0.1 to 2.2 denier, and the covering factor of the fabric is 2,000 or more.

The low-ventilation high-density fabric is preferably a low-air permeable high-density plain woven fabric, a mat fabric or a twill fabric which is used for a warp yarn and a weft yarn with a hydrophobic multifilament fiber crepe yarn having a twist coefficient of 7,000 to 25,000. Further, a low-ventilation high-density fabric having a water resistance of 200 mm or more is preferred.

(1) Since this low-ventilation high-density fabric uses a strong twisted yarn, it is difficult to form a communicating capillary, and the capillary diameter is also small, so that the amount of moisture retained is small. Therefore, since it is a high-density fiber and not only the absorption of water is small, the drying speed is fast even after water absorption. It has value as a energy-saving material in general clothing, especially uniform clothing. Moreover, it is not easy to wrinkle, and when it is made into a clothing material, it is excellent in the wearability and handling property.

(2) Since it uses a strong twist yarn but constitutes a high density, it does not exhibit the textured appearance of a conventional strong crepe fabric, and only produces fine unevenness corresponding to the smaller diameter of the monofilament fiber constituting the fabric surface. And in appearance Only see smoothness.

(3) The water repellency of the low-ventilation high-density fabric, especially the frictional water repellency, is remarkably good.

1‧‧‧Multifilament fiber yarn

1a‧‧‧Capillary

2‧‧‧Multifilament fiber yarn

3‧‧‧monofilament fiber yarn

3a‧‧‧Capillary

3b‧‧‧ bump

Fig. 1 is a conceptual diagram showing the arrangement state of monofilament fibers of a non-twisted or weakly twisted multifilament fiber yarn.

Fig. 2 is a conceptual diagram showing the arrangement state of monofilament fibers of a strong multifilament fiber yarn.

Fig. 3 is a conceptual view showing the surface unevenness of the monofilament fiber of the strong multifilament fiber yarn viewed from the side.

The ratio of the strong twist yarn used in the low-ventilation high-density fabric of the present invention refers to the ratio of the fabric texture (tissue map), the yarn density, the yarn thickness (corresponding to the yarn diameter) and the area occupied by the surface of the fabric. It is preferably 50% or more, more preferably 65% or more. The best is 100%.

The result of the multifilament fibers being twisted together by the crepe, as shown in Fig. 1, may be parallel to the capillary formed by the multifilament fiber of the flawless or the multifilament fiber 1 of the weak The weaker parallel-arranged capillaries 1a are different, and as shown in Fig. 2, the capillary 3a is cut and arranged, and the diameter is small. Further, as shown in Fig. 3, the surface of the multifilament fiber yarn 2 is formed to be thick as the monofilament fiber yarn 3 constituting the multifilament fiber yarn. The unevenness 3b of the size corresponding to the fineness is not easily broken. This point is different from the multifilament fiber yarn and the weak multifilament fiber yarn 1 which are innocent.

The method of applying the crepe to the yarn is not particularly limited, but a twister such as a double twister can be used. It is also possible to use a novel crepe machine or the like which uses a plurality of multifilament fiber yarns to adjust the unevenness 3b of the surface. In the case where a plurality of multifilament fiber yarns are twisted, each of the multifilament fiber yarns is preferably a predetermined twist.

In order to obtain a strong anti-friction water repellency, the unevenness of the surface of the fabric is preferably a crepe machine of a multi-filament fiber yarn by a twisting machine such as a double twisting machine, and the unevenness of the crepe of the novel crepe is fine, and The structure is stable against pressure such as friction. In order to obtain a water-repellent low-ventilating high-density fabric which is also water-repellent, it is preferable to obtain a dense low-ventilation by twisting a multifilament fiber yarn by a twisting machine such as a double twisting machine. High density fabric.

These properties can also be fully utilized when wearing a garment. That is, when it is worn in the rain, since the water is not easily held, it is less likely to cause water to be wetted by the water due to the surface water as in the conventional fabric.

The low-ventilation and high-density plain weave fabric, the mat fabric and the twill fabric of the present invention have small gap structure between the yarns, and are not easy to make capillary tubes between the yarns, and the strong twisted yarn texture is also not easily produced by high density. For organizations with less floating yarn. In order to reduce the air permeability and improve the windproof property, it is also suitable for the water repellent processing to impart water repellency, and is suitable for the plain weave fabric, the mat fabric, and the twill fabric which have less float yarn of the present invention.

Further, in terms of density, in order not to produce a texture like a fabric using a conventional strong crepe, it is necessary to perform at least a density of a cover factor of a warp and a weft yarn defined by the following formula: a total coverage factor of 1500 or more. Construction fabricization. More preferably, it is a dense structural fabric of 2000 or more. By further increasing the density and further imparting water-repellent processing, in addition to wind resistance, anti-friction water repellency or water repellency can be obtained. By increasing the coverage factor value of the entire fabric to a density of about 2,500 or more, the water repellency of 250 mm or more required for the texture of the clothes, the texture of the umbrella, and the texture of the tent can be obtained.

Strong crepe is used to make a fabric with a conventional texture, or to adjust the texture and create a (pretty) appearance. The strong crepe is utilized for the unwinding force (shrinkage), and the force is skillfully used to complete the fabric and then untwist and shrink to make a large relief or texture on the surface of the fabric. The crepe itself is used to make the thickness and fineness of the yarn and to create the appearance of the fabric. That is, in order to make the surface of the fabric texture or large unevenness, the fabric design is also worked together. In order to force the crepe to shrink to produce a texture or a large unevenness, the density of the yarn is undone in the design of the fabric, or the texture of the fabric is worked out to produce texture and adjust the appearance, or to adjust the texture of the fabric. Also, it is used only in the weft yarn to make a fabric having a willow-tone texture appearance. Conventional use of strong crepe yarns has a gap between the yarns due to the texture-centered fabric, resulting in high air permeability.

In the present invention, the fabric is densified to avoid the untwisting force of the strong crepe as described above, and is not used for texture generation as is conventional, but the strong crepe does not produce a capillary structure, or even if it is produced, it is reduced. Small, shorten capillary diameter. That is, the strong crepe fabric of the present invention shrinks in order to prevent texture during the scouring and dyeing process after the weaving of the fabric, and the weaving operation is performed at a high density without inter-yarn voids. As a result, the generation of voids is successfully suppressed and the generation of texture is suppressed, and the capillary structure of the smaller diameter which is characteristic of the strong twisted yarn is successfully developed for the first time into the high-density fabric, thereby eliminating the conventional high density. The shortcomings of the fabric, and even if wetted by water, can result in less water absorption and faster drying of high density fabrics. If the density of the fabric which does not cause the texture is expressed by the fabric cover factor, 1500 or more is necessary, and it is preferably 2,000 or more.

In the present invention, in order to prevent the formation of the capillary, the capillary diameter formed is reduced, the water absorption property is suppressed, and the drying property is improved, and the yarn twist coefficient required is 5100 or more, preferably 7,000 or more, and more preferably 10,000 or more. In the case where water repellent processing is performed and high water repellency is desired, it is preferably 25,000 or less.

Regarding the thickness of the monofilament Danny, it is preferable to use a thicker one from the viewpoint of not easily forming a capillary structure or reducing the number of capillaries to reduce water absorption. On the other hand, in order to improve the windproof property, a dense texture is required, and it is necessary to make the texture texture soft to be suitable for wearing as a clothing. For these purposes, the yarn system is finer. In order to achieve the same, the thickness of the yarn used in the present invention is preferably 0.1% or more of the monofilament Danny, and preferably 3.5 or less. More preferably, it is 0.3 denier or more and 2.2 denier or less.

The thickness of the multifilament fiber yarn used in the same way is The densely-knitted structure does not create inter-tissue voids, and water-repellent processing is used to improve water repellency, and finer yarns are preferred, and from the viewpoint of making the texture of the fabric used as a texture to be soft, Finer yarns are also preferred. On the other hand, it is preferable to use a thicker yarn for the purpose of producing a capillary structure having a large number of yarns. In order to achieve this, in the present invention, it is 30 or more denier, and preferably has a thickness of 150 denier or less. The yarn of the thickness of 50 denier or more and 100 denier or less is optimal.

It is preferable that the yarn shape is in a state in which the yarn of the processed yarn type is more disordered than the yarn of the monofilament fiber type, and the capillary structure is not easily formed. Moreover, in order to obtain the water repellency with friction durability, it is necessary to produce a fine uneven structure corresponding to the diameter of a strong yarn which is not broken even by friction. Although it has been found in the present invention that a fine crepe structure is preferable for producing a strong fine uneven structure, from this point of view, the monofilament Danny of the monofilament fiber is preferably thicker. The preferred monofilament Danny range is 0.3 denier or more, more preferably 0.4 denier or more, and most preferably 0.9 denier or more.

In order to obtain water repellency or water repellency using the low-ventilation high-density fabric of the present invention, although it is necessary to perform water-repellent processing, no special water-repellent processing is required, but it is only required to be used in the usual manner. It is sufficient to use the water-repellent treatment of the fluorine- or fluorenone-based water-repellent agent. Further, there is no limitation on the use of an antistatic agent or the like as needed. In practice, it is of course possible to consider high-density fabrics, and further to consider the use of strong multi-filament fiber yarns, etc., which have been carried out conventionally or have been carried out by those skilled in the art, for example, to improve water drainage. The impregnation agent impregnated with the agent, delaying the processing speed in order to prolong the immersion time Waiting for the work. Water repellency and water repellency of 200 mm or more can be obtained by performing such usual water repellency processing.

In the evaluation of the friction durability of the water-repellent product of the present invention described later, it has been found that a frictional durability water repellency which is not seen in the conventional water-repellent high-density fabric can be obtained. The reason for this can be considered as a strong fine concavo-convex structure 3b of a yarn produced by the diameter of the monofilament fiber constituting the multifilament fiber yarn by the entry and exit of the monofilament fibers produced by the crepe yarn (made by the swirling). It can be formed directly on the surface of the fabric (see Figure 3). The water-repellent effect excellent in the friction durability is preferably as the thickness of the monofilament fiber is larger, and the specific thickness is more preferably 0.4 denier or more, and most preferably 0.9 denier or more. The water repellency which is excellent in friction durability in the invention of the present invention is obtained by the following friction durability evaluation method and is obtained 100 times or more.

In the invention of the present invention, if the multifilament fiber yarn that can be used is a multifilament fiber yarn of synthetic fiber, semisynthetic fiber, or recycled fiber, all of them can be used, but high water permeability is required for water repellency processing. The density woven fabric is preferably a hydrophobic multifilament fiber yarn, and a polyester multifilament fiber yarn, a polyamide conjugated multifilament fiber yarn, or a polypropylene ray multifilament fiber yarn can also be suitably used.

The evaluation and measurement of the invention of the present invention are as follows.

1. Water repellency, as assessed by JIS L 1092 spray method (equivalent to ISO 4920).

Disperse the water of the sprinkler and investigate the extent to which the water surface is wetted by the ease of water. The value is 5 stages of "1, 2, 3, 4, 5", and Level 5 is excellent.

2. The friction durability of water dialing is to place 0.3cc of water droplets on the fabric, and place the thick bamboo chopsticks horizontally to strongly rub the water droplets until the water droplets do not move on the fabric (residual water droplets (water marks) ) The number of times has been assessed.

3. Water pressure resistance is evaluated by the low water pressure method (equivalent to ISO 811) described in JIS L 1092A.

4. Air permeability is evaluated by the Frazier method (corresponding to ISO 9237) described in JIS L 1096.

5. The coverage factor of the warp direction is the number of warp yarns per inch × Calculated.

6. The coverage factor of the weft direction is the number of weft yarns per inch × Calculated.

7. The coverage factor of the whole fabric is the coverage factor of the warp direction and The total of the coverage factors in the weft direction is calculated.

8. Absorbency, after immersing a 10 cm square fabric in water, sandwiching the newspaper and gently pressing to remove excess moisture, measuring and measuring the water absorption rate of each fabric weight.

9. Dryness was dehydrated in a dewatering tank of International Brand Washing Machine (NA-W45A1) immediately after the water absorption rate was measured for 5 minutes, and was evaluated by the subsequent water absorption.

10. The number of crepe yarns is expressed as the number of turns per meter (times/M).

11. The coefficient of yarn twist is the number of yarns per meter (times / M) × Calculated.

Hereinafter, the present invention will be specifically described with reference to examples (reference examples).

[Reference example]

In the warp and weft yarns, a strong twist yarn obtained by subjecting wool denim yarns (unifilament Danny 1.04) of 75 denier and 72 monofilament fibers to 2000 yarns/M was subjected to a usual method. Weaving (the warp yarn is S twist yarn, the weft yarn is S yarn and Z twist yarn alternately), scouring, dyeing, and fine processing to produce the low-ventilation high-density warp plain weave fabric of this reference example. The reference yarn has a warp density of 216 per inch and a weft density of 86. The coefficient of twist of the multifilament fiber yarn obtained by calculation was 17321, and the coverage factor of the whole fabric was 2615.

In the comparative example, the same 75 denier, 72 monofilament fiber wool monofilament fiber yarn (monofilament Danny 1.04) was used, and the warp yarn was used to avoid the problem of the weaving problem. The yarn obtained from the weak crepe of 300T/M is used in the weft yarn in the state of crepe without crepe, and is woven, scoured, dyed, and finely processed in the usual manner to make the comparison high. Density plain weave (hereinafter, referred to as Comparative Example 1). The warp density of Comparative Example 1 was 132 per inch and the weft density was 102. The calculated warp coefficient of the warp yarn is 2598, the twist coefficient of the weft yarn is 0, and the coverage factor of the entire fabric is 2026.

The water absorption and drying properties of the present Reference Example and Comparative Products are shown in Table 1 below.

In Reference Example 1, the water absorption was less than that of Comparative Example 1, and the drying property was also excellent.

[Example 1]

The woven fabrics of the above-mentioned Reference Example 1 and Comparative Example 1 were subjected to water repellent treatment using a fluorine-based water repellent (AashiGuard AG710, 7% aqueous solution manufactured by Asahi Glass Co., Ltd.), and calendered (calender). The treatment was carried out to obtain Example 1 and Comparative Example 2. The water pressure resistance, water repellency, and friction durability water repellency of Example 1 and Comparative Example 2 are shown in Table 2 below.

This Example 1 shows that the novel water-repellent friction-resistant water-repellent water is particularly excellent compared to Comparative Example 2.

[Reference Example 2]

Replacing the 75 Danny, 72 wool monofilament fiber yarn (monofilament Danny 1.04) used in Reference Example 1, 2000T, 144 monofilament fiber wool monofilament fiber yarn (monofilament Danny 0.52) 2000T The strong twisted yarn obtained from the S yarn of /M is a warp yarn, and the S yarn and the Z twist yarn which are obtained by 1500T/M twist yarn of the same yarn as the warp yarn are alternately used in the weft yarn. The yarn was processed, and the weaving, scouring, dyeing, and fine processing were carried out in the same manner as in Reference Example 1 to obtain the low-ventilation high-density warp-knit plain woven fabric of Reference Example 2. The warp density of this Reference Example 2 was 224 per inch and the weft density was 84. The twist coefficient of the multifilament fiber yarn of the warp yarn obtained by calculation is 17321, the twist coefficient of the weft multifilament fiber yarn is 12990, and the covering factor of the whole fabric is 2667. The water absorbability and dryness of the present Reference Example 2 and Comparative Example 1 are shown in Table 3 below.

In the present Reference Example 2, since the monofilament denier phase was finer than that of Reference Example 1, the water absorbability was slightly large, and the dryness of this portion was slightly worse than Reference Example 1, but it was superior to Comparative Example 1.

[Embodiment 2]

The woven fabric obtained in the above Reference Example 2 was subjected to water-repellent and calendering in the same manner as in Example 1 to prepare a water-repellent fabric of the second embodiment. The water pressure resistance, water repellency, and friction durability water repellency of Example 2 are shown in Table 4 below. The comparison object was the same as that of Comparative Example 2 in Example 1.

In the second embodiment, the increase in the water pressure resistance was observed because the monofilament denier phase was finer than that in the first embodiment, and the friction durability water repellency was superior to that of the comparative example 2.

[Example 3]

In the warp and weft yarns, a strong twisted yarn obtained by subjecting 50 denier and 48 monofilament fiber polyester monofilament fiber yarns (monofilament Danny 1.04) to 2500 times/M twist yarn was woven by a usual method (warp yarn) For S crepe, the weft yarns were used alternately with S crepe and Z crepe) to produce a warp woven plain weave having a warp density of 235 per inch and a weft density of 105. The woven fabric is scoured by a usual polyester fabric dyeing method, and after the dyeing, a fluorine-based water repellent (using Asahi Protective Agent AG710, 7% aqueous solution manufactured by Asahi Glass Co., Ltd.) is subjected to water repellent processing, and further The calendering treatment was carried out to obtain a water-repellent low-ventilation high-density fabric of the present Example 3.

The warp density of this Example 3 was 265 per inch, and the weft density was 115 per inch. The twist coefficient of the strong multifilament fiber yarn used in this example was 17,678, and the coverage factor of the fabric of the present invention was 2,686. The air permeability was 9.6 cc/cm ² /sec. The fabric per square meter weighs 115g.

A wool monofilament fiber yarn (monofilament Danny 1.04) of 75 denier and 72 monofilament fibers is used as a comparison object, and both the warp yarn and the weft yarn are used in a state in which the twisted yarn is not twisted. The warp yarn density is 198 per inch and the weft yarn density is 85 warp plain weave fabric. The fabric was subjected to the same processing as in the above Example 3 to obtain a water-repellent low-ventilation high-density fabric for comparison (Comparative Example 3). The warp density of Comparative Example 3 was 211 per inch, and the weft density was 91 per inch. The multifilament fiber yarn of the warp and weft yarns used herein has a twist coefficient of 0, and the overall covering factor of the fabric is 2615. The fabric per square meter had a weight of 115 g and an air permeability of 0.3 cc/cm ² /sec. The water pressure resistance, water repellency, friction durability water repellency, and drying property of Example 3 and Comparative Example 3 are shown in Table 5 below.

This Example 3 shows that the novel friction-resistant water repellency is particularly excellent compared to Comparative Example 3. Further, the drying property was also exceptionally excellent compared to Comparative Example 3.

[Example 4]

In the warp yarn, a wool polyester polyester monofilament yarn (monofilament Danny 0.35) of 50 denier and 144 monofilament fibers was used for 1800 times/M crepe a strong crepe yarn obtained by using a 50% denier, 144 monofilament fiber wool polyester monofilament fiber yarn (monofilament Danny 0.35) for 2500 times/M crepe yarn in the weft yarn, and The usual method is to perform weaving (the warp yarn is S twist yarn, and the weft yarn is to alternately use S twist yarn and Z twist yarn) to produce a warp plain weave fabric having a warp density of 253 per inch and a weft density of 107. The woven fabric was subjected to scouring, dyeing, and water repellent processing in the same manner as in Example 3, and then subjected to calendering treatment to obtain a water permeable low-ventilation high-density fabric of the present Example 4. The warp density of this Example 4 was 268 per inch, and the weft density was 117 per inch. The twisted multifilament fiber yarn used in the present invention has a warp twist coefficient of 12728, a weft yarn twist factor of 17,678, and a fabric covering factor of 2722. In the fourth embodiment, the novel water-repellent friction durability water repellency is excellent to 200 or more.

[Example 5]

A strong crepe obtained by using 1800 yarns/M twisted yarn of 50 denier, 144 monofilament fiber wool polyester monofilament fiber yarn (monofilament Danny 0.35) was used in the warp yarn, and 30 denier was used in the weft yarn. , 12 monofilament fiber wool polyester monofilament fiber yarn (monofilament Danny 2.50), and weaving in the usual way (warp yarn using S twist yarn) to make warp density of 253 per inch, weft density is 127 warp plain weave fabric. The woven fabric was subjected to scouring, dyeing, and water repellent processing in the same manner as in Example 3, and then subjected to calendering treatment to obtain a water permeable low-ventilation high-density fabric of Example 5. The warp density of the embodiment 5 is 268 per inch, The weft density is 139 per inch. The twist coefficient of the strong multifilament fiber yarn of the warp yarn used therein was 12728, the twist coefficient of the weft yarn was 0, the coverage coefficient of the warp yarn was 1895, the cover coefficient of the weft yarn was 761, and the coverage factor of the whole fabric was 2656. The ratio of the warp cover factor to the overall cover factor and the ratio of the warp yarn crepe calculated by the woven fabric to the surface area of the fabric were 83%. In the present Example 5, the novel water-repellent friction durability water repellency was excellent to 200 or more.

(industrial availability)

The low-ventilation high-density woven fabric of the present invention is a low-ventilation woven fabric having a small water absorbing property and excellent drying property, and is excellent in frictional durability and water repellency, so that it can be used not only in the clothing materials such as general clothing materials, uniform clothing materials, and sports materials. It can also be used in the field of width of the tent material, umbrella texture, etc. In particular, it is helpful as a new water-repellent product in the field of sports requiring water repellency and the field of uniforms, because of the friction-resistant durability of water-repellent water that has not been hitherto.

2‧‧‧Multifilament fiber yarn

3‧‧‧monofilament fiber yarn

3a‧‧‧Capillary

Claims (4)

A low-ventilation high-density fabric characterized in that 50% or more of the area of the surface of the fabric is water-repellent by a fabric composed of a strong twist yarn having a twist coefficient of 5100 or more to obtain a gas permeability of 50 cc/cm ² /sec. Hereinafter, the cover factor of the fabric is 1500 or more, and the friction durability water repellency is 100 times or more. The low-ventilation high-density fabric according to claim 1, wherein more than 50% of the area of the surface of the fabric is composed of a hydrophobic multifilament fiber crepe yarn having a twist coefficient of 7,000 to 25,000, and the strong twist The yarn has a thickness of 30 to 150 denier, a monofilament constituting the strong crepe of 0.1 to 3.5 denier, a fabric having a cover factor of 2000 or more, a mat fabric or a twill fabric. The low-ventilation high-density fabric according to the second aspect of the invention, wherein the hydrophobic multifilament fiber entangled yarn having a twist coefficient of 7,000 to 25,000 is used for the warp yarn and the weft yarn. The low-ventilation high-density fabric according to the first, second or third aspect of the invention, wherein the water resistance is 200 mm or more.