JPH07145565A - Manufacturing method of anti-static waterproof cloth - Google Patents

Abstract

(57) [Abstract] [Objective] To provide a method for producing an antistatic waterproof cloth of a high-density woven fabric having excellent wash durability and antistatic and waterproof properties. [Composition] Hot water shrinkage rate 20% or more, maximum thermal stress value 0.4g
/ Denier and electrical resistance of 10 ⁹ Ω / cm or less A woven fabric containing 20% by weight or more of polyester-based synthetic fibers is subjected to hot water treatment and then subjected to water repellent treatment.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an antistatic waterproof cloth, which is a high-density woven fabric having excellent wash durability and antistatic properties and waterproof properties.

[0002]

2. Description of the Related Art Conventionally, both casual and waterproof functions such as coats and blousons and sports clothes such as skis, marine and athletics have been required. Generally, in order to meet these demands, a method of forming a microporous resin layer on the surface of a cloth that is water repellent by a coating method or a laminating method using a polyurethane resin or a polyamino acid resin, or an ultrafine fiber A method of applying a water-repellent treatment to a woven fabric obtained by weaving a high density is performed.

However, the waterproof cloth obtained by these methods has a problem that the texture becomes hard in the former case and a problem that sufficient water pressure resistance cannot be obtained in the latter case. Furthermore, there is a problem that there is no antistatic property, and there is a problem in that it is electrified at the time of sewing and cannot be sewn, or the user feels uncomfortable and entangled during wearing.

Conventionally, with respect to the problem of antistatic property,
It has been dealt with by a method of improving antistatic property by using an antistatic agent together at the time of water repellent treatment. However, with this method,
It causes a decrease in water repellency, causes a large decrease in water repellency especially after washing, and cannot obtain good waterproof performance.
In terms of antistatic property, no one having washing durability was obtained.

On the other hand, a method of weaving antistatic yarn at a high density and water-repellently processing it has been attempted, but sufficient waterproofness cannot be obtained, and only a low water pressure resistance level is available. It was not obtained.

[0006]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object thereof is to obtain an antistatic waterproof cloth having excellent antistatic property and waterproof property, which is excellent in washing durability. It is what

[0007]

SUMMARY OF THE INVENTION The present invention achieves the above object and has the following configuration. That is, the present invention has a hot water shrinkage of 20% or more and a maximum thermal stress value of 0.
An antistatic feature characterized by weaving a woven fabric containing 20% by weight or more of polyester-based synthetic fibers of 4 g / denier or more and an electric resistance value of 10 ⁹ Ω / cm or less, which is subjected to hot water treatment and then subjected to water repellent treatment. The gist is a method of manufacturing a waterproof fabric.

The present invention will be described in detail below.

In the present invention, the hot water shrinkage rate is 20% or more, the maximum thermal stress value is 0.4 g / denier or more, and the electric resistance value is 10 ⁹ Ω / c.
Use polyester synthetic fibers of m or less.

The polyester-based synthetic fiber referred to herein is a polyester obtained by using ethylene glycol and terephthalic acid as main structural units, and copolymerizing another dicarboxylic acid component and other diol component as other structural units with conductive properties. It is made into a fiber by blending an antistatic substance such as a conductive fine particle or a copolymer having an antistatic property.

As the copolyester used here, particularly isophthalic acid is used as the other dicarboxylic acid component, and 2,2-bis [4- (β-
It is preferable to use a copolyester in which hydroxyethoxy) phenyl] propane is used and the total number of moles of both is in the range of 5 to 15 mol%.

As the conductive fine particles, there are used metal powder, conductive carbon black, and white conductive fine particles in which tin oxide is coated on the surface of inorganic fine particles. Further, as the copolymer polymer having antistatic property, , Polyalkylene glycol and polyalkylene glycol adducts, various organic sulfonic acid metal salts, phosphonic acid metal salts,
A polyester obtained by copolymerizing a carboxylic acid metal salt is used, and a polyester obtained by copolymerizing a polyalkylene glycol such as polyethylene glycol is particularly preferable.

The blending amount of the antistatic substance may be determined in consideration of the respective conductivity, antistatic property and spinnability, and the blending method may be a method of uniformly dispersing by a blending method or a core-sheath. The structure may be a method of blending with the core, etc., and is not particularly limited in the present invention.

The polyester-based synthetic fiber thus obtained has a hot water shrinkage of 20% or more and a maximum thermal stress value of 0.4 g.
/ It is essential to have performance of denier or higher and electric resistance value of 10 ⁹ Ω / cm or lower.

The hot water shrinkage here means that after fixing one end of the fiber and applying an initial load of (1/10) g / denier to the other end and applying a fixed length between marks, Remove the load, immerse in boiling water for 30 minutes, then naturally dry in the horizontal state, apply the initial load again to measure the mark length, and divide the mark length difference before and after contraction by the mark length before contraction. After that, the value was obtained by multiplying by 100, and if the hot water shrinkage ratio is less than 20%, the fabric cannot be sufficiently shrunk, and a good high-density fabric cannot be obtained.

The maximum thermal stress value is the initial load of 1 with a thermal stress measuring machine.
The maximum value of the thermal stress value obtained under the condition of 0 g is taken as the maximum thermal stress value, and this value is required to be 0.4 g / denier in the present invention, and preferably 0.45 to 0.65 g / denier. Is. When the maximum thermal stress value is less than 0.4 g / denier, when the fabric is subjected to a shrink treatment, it does not shrink sufficiently, and a good high-density fabric cannot be obtained.

The electric resistance value as referred to in the present invention is the resistance value of the fiber measured with a measuring voltage of 500 V, and this value is 10 ⁹
If it exceeds Ω / cm, 80% of the fibers have no antistatic property during weaving.
If it exceeds, good antistatic property cannot be obtained.

The fineness of the polyester-based synthetic fiber used in the present invention may be appropriately determined according to the intended use of the product, but is usually preferably in the range of 1.5 to 10 denier.

In the present invention, a woven fabric is woven so as to contain 20% by weight or more of the polyester synthetic fiber as described above, and the woven fabric is subjected to hot water treatment to shrink the polyester synthetic fiber. If the polyester-based synthetic fiber is woven in an amount of less than 20% by weight, the woven fabric cannot be sufficiently shrunk during hot water treatment, and a high-density woven fabric cannot be obtained. As for, no satisfactory performance can be obtained.

At the time of weaving, the polyester synthetic fiber and other fibers may be mixed and used in consideration of the texture, for example, ultrafine polyester synthetic fiber of 1 denier or less or nylon 6 Polyamide synthetic fibers typified by nylon 66, rayon, and cellulose regenerated fibers typified by cupra may be used. Further, there is no problem even if it is woven with the above-mentioned fibers and the like.

The subsequent hot water treatment is intended to shrink the woven fabric by hot water to densify the fabric. The temperature of this hot water treatment is 60-1
A range of 35 ° C is preferred. The hot water treatment method may be any of various conventionally known methods, for example, a continuous relaxer in the form of a spreading cloth or a jet dyeing machine in the form of a rope.

In the method of the present invention, the fabric densified by hot water treatment is subjected to water repellent finishing. This water repellent treatment is performed for the purpose of imparting waterproof performance to the high-density fabric having antistatic property, and is an essential requirement in the present invention.

As the water repellent used here, a known water repellent such as a silicon compound or a fluorine compound may be used. From the viewpoint of the water repellency and washing durability of the polyester synthetic fiber, A fluorinated water repellent is preferably used. Furthermore, in order to improve the water-repellent washing durability, melamine-based,
An imine-based or isocyanate-based crosslinking agent may be used in combination.

The water repellent treatment method may be carried out by a conventional method in which a water repellent agent solution is applied to a woven fabric by a padding method, a spray method, a dipping method or the like, followed by drying and heat treatment. The adhesion amount of the water repellent agent, the drying condition, and the heat treatment condition may be appropriately determined depending on the water repellent agent to be used and the intended use of the product, and are not particularly limited in the present invention.

The dyeing may be carried out either before or after the above-mentioned hot water treatment step, and the dyeing may be performed together with the hot water treatment.

The present invention has the above configuration.

[0027]

[Working] As in the present invention, when a woven fabric is composed of polyester synthetic fibers having a maximum thermal stress value of 0.4 g / denier or more and a hydrothermal shrinkage of 20% or more, the fiber shrinks during hot water treatment. Since the force exerted is extremely strong, it is possible to densify the fabric. When water-repellent treatment is applied to this densified fabric, the high density and water repellency of the fibers are combined to show high water pressure resistance, and the densified texture points of the fabric are rubbed during washing. Since it is difficult to loosen the fabric, the fabric has very little reduction in water pressure resistance due to washing. On the other hand, as for the antistatic property, since the fiber itself has excellent antistatic property, the antistatic property is maintained without using an antistatic agent at the time of water repellent treatment, and the performance is deteriorated by washing. It is possible to maintain anti-static property semipermanently.

[0028]

EXAMPLES Next, the present invention will be described in more detail with reference to Examples. The measurement and evaluation of the performance of the cloth in this Example were carried out by the following methods. (1) Waterproofness Water repellency: JIS L-1092 Spray method Water pressure resistance: JIS L-1092 Low water pressure method (2) Moisture vapor transmission rate: JIS L-1099 A-1 method (3) Antistatic friction electrification voltage: JIS L-1094 B method Surface leakage resistance: AATCC-76 (4) Washing test After washing 10 times by JIS L-0217 103 method, screen dry by air drying.

Example 1 Polyester obtained by copolymerizing a polyester composed of ethylene glycol and terephthalic acid with 4.5 mol% of 2,2-bis [4- (β-hydroxyethoxy) phenyl] propane and 5 mol% of isophthalic acid. I prepared a chip. Next, 30% by weight of conductive fine particles of titanium dioxide fine particles (particle size 0.2 μm) coated with 30% by weight of stannic oxide was added to the above polyester chip as an A component, and the conductive particles were converted from the A component. Using the core-sheath type composite spinning machine consisting of a two-phase extruder with the removed component as the B component, the A component as the core component, the B component as the sheath component, and the A: B ratio of 20:80 ( (Weight ratio), the composite fiber was spun and then stretched to obtain a core / sheath type polyester fiber of 30 denier / 12 filament. The obtained polyester fiber had a maximum thermal stress of 0.5 g / denier, a hot water shrinkage of 27%, and an electric resistance value of 10 ⁶ Ω / cm.

Next, the obtained antistatic polyester fiber is used as a warp, and the weft is a normal polyester fiber 110 denier / 364 filament which is not the above-mentioned copolyester, and the warp density is 240 yarns / inch, weft A plain weave fabric having a density of 93 fibers / inch was woven. After this,
After scouring in the usual way, the temperature is 130 ℃ and the time is 2
Hot water treatment for 0 minutes, 48.4% in the longitudinal direction, 9. in the weft direction.
6% shrinkage to densify the woven fabric, warp density 263 /
A high-density woven fabric having an inch and weft density of 138 yarns / inch was obtained. Then, according to the following prescription 1, temperature 130 ℃, time 3
Dyeing was carried out under the condition of 0 minutes to obtain a blue high-density fabric.

Formulation 1 Kayalon poly Blue EBL-E 1% owf (manufactured by Nippon Kayaku Co., Ltd., disperse dye) Nikkasan Salt SN-130 0.5 g / liter (manufactured by Nichika Chemical Co., Ltd., dispersant) Acetic acid 0 .1 cc / liter

Here, a high-density fabric is dipped in the treatment liquid shown in the following Formulation 2, squeezed with a mangle at a squeezing ratio of 80%, dried, and heat-treated at a temperature of 180 ° C. for a time of 30 seconds. After that, a calendar treatment was performed at a temperature of 180 ° C., a pressure of 10 kg / cm ² , and a speed of 10 m / min to obtain an antistatic waterproof cloth of the present invention.

Prescription 2 Asahi Guard LS-317 5% by weight (Meisei Chemical Industry Co., Ltd., fluorine-based water repellent) Sumitex Resin M-3 0.1% by weight (Sumitomo Chemical Co., Ltd., melamine resin) Sumi Tex Resin Accelerator ACX 0.1 wt% (Sumitomo Chemical Co., Ltd., M-3 catalyst) Water 94.8 wt%

For the purpose of comparison with the present invention, in the production of the core-sheath type polyester fiber in this example, 30 denier / 12 filaments of the polyester fiber were produced only with the component B, and then weaving under the same conditions as in this example, A comparative antistatic waterproof cloth (Comparative Example 1) was prepared in exactly the same manner as in this Example, except that the following Formulation 3 was used instead of Formulation 2 in this Example. Obtained.

Formulation 3 Asahi Guard LS-317 5 wt% Sumitex Resin M-3 0.1 wt% Sumitex Resin Accelerator ACX 0.1 wt% AG Accelerator 700 1 wt% (Meisei Chemical Industry Co., Ltd., Antistatic agent) Water 93.8% by weight

For comparison with the present invention, the polyester fiber of 110 denier / 364 filaments used in the weft of the fabric of this example was used for both warp and weft, and the warp density was 136 yarns / inch, weft A woven fabric having a density of 71 yarns / inch was woven and subjected to hot water treatment and dyeing under the same conditions as in this example to obtain a warp yarn density of 148 yarns / inch and a weft yarn density of 74.
After obtaining a high-density fabric of 1 book / inch, water-repellent antistatic processing and calender treatment were performed under the same conditions as in Comparative Example 1 above to obtain a comparative antistatic waterproof cloth (Comparative Example 2).

The performances of the present invention and the comparative work cloth were measured, and the results are shown together in Table 1.

[Table 1]

As is clear from Table 1, the antistatic waterproof cloth of the present invention is a processed cloth having excellent washing durability and waterproof and antistatic properties.

Example 2 Polyester core-sheath type composite fiber having the same maximum thermal stress of 0.5 g / denier as used in Example 1, hot water shrinkage of 27% and electric resistance of 10 ⁶ Ω / cm 30 denier / 12 filaments and normal polyester yarn 55 denier / 18
Two filaments were aligned and subjected to an entanglement treatment to obtain an entangled yarn having an entanglement number of 65 / m. This entangled yarn was used as a warp and a weft, and a woven fabric having a flat design with a warp density of 156 yarns / inch and a weft yarn density of 95 yarns / inch was woven. Next, after the scouring treatment by the usual method, hot water treatment at a temperature of 130 ° C. for 20 minutes is performed to shrink the fabric by 45.2% in the warp direction and 23.7% in the weft direction to densify the woven fabric. A high-density woven fabric having a density of 193 yarns / inch and a weft density of 138 yarns / inch was obtained. Then, according to the following formulation 4, a red high-density fabric was obtained by dyeing under the same dyeing conditions as in Example 1.

Formulation 4 Miketon polyester Red FB 1% owf (manufactured by Mitsui Toatsu Dye Co., Ltd., disperse dye) Nikka Sunsalt SN-130 0.5 g / liter (manufactured by Nichika Chemical Co., Ltd., dispersant) Acetic acid 0.1. 1 cc / liter

Here, the high-density fabric was dipped in the treatment solution shown in the following formulation 5 and treated under the same conditions as in Example 1 to make it water repellent, and then subjected to calendar treatment under the same conditions as in Example 1, The antistatic waterproof cloth of the present invention was obtained. Prescription 5 Texguard TG-5431 5% by weight (Daikin Industries, Ltd., fluorine-based water repellent) Sumitex Resin M-3 0.1% by weight Sumitex Resin Accelerator ACX 0.1% by weight Water 94.8 weight%

For comparison with the present invention, the core-sheath type polyester fiber used in this example was replaced by a normal polyethylene terephthalate fiber 30 denier / 12 filament, and the following prescription 6 was used in place of prescription 5. A comparative antistatic waterproof cloth (Comparative Example 3) was obtained by the same method as that of this example. Prescription 6 Texguard TG-5431 5 wt% Sumitex Resin M-3 0.1 wt% Sumitex Resin Accelerator ACX 0.1 wt% Nicepol FE-26 1 wt% (Nichika Chemical Co., Ltd. Electric agent) Water 93.8% by weight

The performances of the inventive and comparative fabrics were measured and the results are shown in Table 2.

[Table 2]

As is clear from Table 2, the processed cloth produced by the method of the present invention had excellent anti-static property and waterproof property with excellent washing durability.

[0045]

EFFECTS OF THE INVENTION According to the method of the present invention, it is possible to manufacture an antistatic waterproof cloth having excellent washing durability and antistatic property and waterproof property. Since the processed cloth obtained by the present invention has the above-mentioned properties, it is an optimum material for casual clothes such as coats and blousons and sports clothes such as skis, marine and athletics.

Claims (1)

[Claims] 1. A hot water shrinkage ratio of 20% or more and a maximum thermal stress value.
It is characterized in that a woven fabric containing 20% by weight or more of a polyester synthetic fiber having an electrical resistance value of 0.4 g / denier or more and an electric resistance value of 10 ⁹ Ω / cm or less is woven, subjected to hot water treatment, and then subjected to a water repellent treatment. Method for manufacturing antistatic waterproof cloth.