JPH10292266A - Production of waterproof high density fabric - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a high density fabric having excellent waterproof property and dyeing quality by dyeing a high density fabric woven with a polyester filament yarn and then performing a treatment with a fluorine-based water repellent and a calendar treatment. SOLUTION: This method for producing a waterproof high density fabric comprises weaving a high density fabric having the range of 170-2500 sum of the covering factors of weft yarns and warp yarns by using a polyester filament yarn having 0.3-1.1 de individual fiber thickness and 60-130 de total yarn thickness, then performing the removal of a size from the fabric and a finishing in a state of an extended width, then putting the fabric into a liquid flow dyeing machine after performing drying and presetting treatment, dyeing by using a dispersion dye in an alkaline bath at pH8.5-10.5 at 120-140 deg.C containing a carrier, performing a reduction and washing treatments, immersing the dyed fabric into a treatment bath containing a fluorine-based waterproof treating agent, squeezing the liquid, performing a drying and a heat treatment, and then performing a calendar treatment.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a high-density fabric having excellent waterproofness.

[0002]

2. Description of the Related Art Conventionally, waterproof fabrics having water resistance include fabrics obtained by rubberizing a fabric and fabrics coated with polyvinyl chloride. Although these waterproof cloths are excellent in waterproofness, they are not easily used for sports clothing because they are very humid. In recent years, a polyurethane solution is wet-coated with a polyurethane solution to form a microporous structure in a coating layer, a polytetrafluoroethylene film in which a microporous structure is formed by stretching, or a polyurethane or polyester film having hydrophilicity. Laminated materials have been widely used in the field of sports clothing as a waterproof fabric having moisture permeability.

[0003] However, these coated and laminated fabrics have a problem that the feel is hard. To solve this problem, a high-density woven fabric using ultra-fine polyester multifilaments has been proposed as a moisture-permeable waterproof cloth having a good feeling. High-density woven fabric is a fabric that has excellent moisture permeability and moderate waterproofness, and has a soft feel. However, since it is woven at high density, the sizing agent can be sufficiently removed by desizing and scouring. It has the drawback that it cannot be removed and the oligomers generated during dyeing tend to remain in the fabric, making dyeing unevenness more likely to occur, significantly reducing the waterproofness after washing, and when used for sports clothing. There was also a problem that the strength was weak.

[0004]

DISCLOSURE OF THE INVENTION The present invention has been made in view of such circumstances, and has excellent dyeing without uneven dyeing, little reduction in waterproofness after washing, and no problem in strength. It is an object of the present invention to provide a method for producing a high-density woven fabric having wetness and waterproofness and a soft feeling.

[0005]

The present invention attains the above object and has the following constitution. That is, the present invention uses polyester filaments having a single yarn fineness of 0.3 to 1.1 denier and a total fineness of 60 to 130 denier, and the sum of the warp and weft cover factors is 1700.
After weaving a high-density woven fabric of up to 2500 and desizing and scouring it in the form of a spread cloth, it is dyed with a disperse dye at a temperature of 120 to 140 ° C in an alkaline bath of pH 8.5 to 10.5 containing a carrier. In addition, the gist of the present invention is a method for producing a high-density woven fabric having excellent waterproofness, which comprises performing a water repellent treatment with a processing agent containing a fluorine-based water repellent and then performing a calendar treatment.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail.
In the method of the present invention, the sum of the cover factor of the warp and the weft is 17 using polyester filament having a single yarn fineness of 0.3 to 1.1 denier and a total fineness of 60 to 130 denier.
First, weaving a high-density woven fabric having a thickness of 00 to 2500
The feature is. The polyester filament used here is a thermoplastic filament that is obtained by melt-spinning a chain polymer that has aliphatic and aromatic structural units in the main chain and that is repeatedly bonded while forming an ester group. There are specific examples such as polyethylene terephthalate and polybutylene terephthalate.

In order to obtain a high-density woven fabric having excellent waterproofness, it is necessary that the single-fiber fineness is in the range of 0.3 to 1.1 denier. If the single-fiber fineness is less than 0.3 denier, the strength required for sports clothing cannot be obtained, and the color fastness will be greatly reduced. On the other hand, if the single-fiber fineness exceeds 1.1 denier, a dense high-density fabric cannot be obtained, so that excellent waterproofness cannot be obtained.
Total fineness should be in the range of 60 to 130 denier. Here, if the total fineness is less than 60 denier, sufficient strength and waterproofness cannot be obtained, and if the total fineness exceeds 130 denier, the hand is greatly hardened, which is not preferable.

In the present invention, the sum of the cover factors is
It means the sum of the cover factor indicating the size of the interval between the warps and the cover factor indicating the size of the interval between the wefts as viewed from the woven fabric surface, and is expressed by the following equation (1). K = n ₁ · N ₁ ^1/2 + n ₂ · N ₂ ^1/2 (1) K: Sum of cover factors n ₁ : Density of warp (book / inch) N ₁ : Denier of warp n ₂ : Density of weft (Book / inch) N ₂ : denier of weft If the sum of the cover factors in the present invention is less than 1700, the voids of the woven fabric become too large, so that good waterproofness cannot be obtained. When,
The texture becomes significantly harder, resulting in a high-density fabric unsuitable for clothing. A flat structure is preferable as a woven structure with an emphasis on waterproofness. In the production method of the present invention, the weaving method is not particularly limited, and weaving may be performed by a known method.

In the present invention, the high-density woven fabric described above is subjected to desizing and scouring in a spread form, and then to a pH of 8.5 to 10.5 containing a carrier.
The second feature is that dyeing is carried out with a disperse dye in an alkaline bath at a temperature of 120 to 140 ° C. First, desizing scouring must be performed in the form of spread cloth. If this is performed in the form of a rope, it is not preferable because wrinkles are generated and the surface quality is deteriorated, and the waterproofness is significantly reduced. The desizing conditions such as desizing scouring equipment and desizing scouring prescription
What is necessary is just to carry out by a conventionally well-known method.

Dyeing with a disperse dye in an alkaline bath improves the levelness of a high-density fabric, which was insufficient even with conventional alkaline dyeing, by adding a carrier having a swelling effect on polyester fibers. It is intended. The carrier used here is an organic substance that promotes the diffusion of the dye into the interior of the fiber.
-Trichlorobenzene, orthodichlorobenzene, orthophenylphenol, methylnaphthalene, butyl benzoate, methyl salicylate and the like. The amount of the carrier used may be appropriately determined depending on the dyeing concentration, and is not particularly limited.

In dyeing, an alkaline agent having a pH in the range of 8.5 to 10.5 is used. As the alkaline agent used here, it is preferable to use an agent which has a large effect of removing the sizing agent and oligomers, has a minimal effect on the dye, and has a buffering action for suppressing pH fluctuation during dyeing. Sodium borate, tribasic sodium phosphate,
Ethylenediaminetetraacetic acid / 4 sodium salt can be mentioned. For the amount of alkaline agent used, pH 8.5
What is necessary is just to use it so that it may be in the range of 10.5. Where p
If H is less than 8.5, the effect of removing the sizing agent and oligomer is lost, and if the pH exceeds 10.5, the disperse dye tends to be decomposed, which is not preferable.

In the method of the present invention, dyeing is carried out with a disperse dye at a temperature of from 120 to 140 ° C. in the above-mentioned alkaline bath. If the temperature exceeds 140 ° C., the disperse dye tends to decompose easily, and there is a problem with the apparatus, which is not practical. The disperse dye used here is preferably an anthraquinone type rather than an azo type since it is necessary to use an alkali-resistant dye.

The third feature of the method of the present invention is that a calender treatment is performed after the water repellent treatment with a processing agent containing a fluorine-based water repellent. The fluorine-based water repellent is a radically reactive unsaturated bond copolymerizable with a fluoroalkyl group-containing polymerizable compound such as a perfluoroalkyl group-containing acrylate or methacrylate. Copolymers obtained by emulsion polymerization of acrylamide derivatives and compounds such as vinyl chloride and vinylidene chloride with a surfactant and a water-soluble organic solvent as dispersion aids Say. The amount of the fluorine-based water repellent used is not particularly limited, but in order to obtain good water repellency, it must be used in an amount of 0.2% by weight or more based on the weight of the fiber.

In the present invention, the water-repellent treatment method for incorporating the fluorine-based water-repellent agent into the high-density fabric is not particularly limited, and the high-density fabric is impregnated with a treatment liquid, squeezed with a mangle or the like, and then dried. Or a known method such as a method of spraying a treatment liquid onto a high-density fabric and then drying. If necessary, curing may be performed using an appropriate crosslinking agent. The calendering performed by the method of the present invention is such that the high-density woven fabric is strongly rubbed by the hot steel roll by passing the high-density fabric under pressure between a hot steel roll and a paper roll or a plastic roll having different surface speeds. This is performed in order to make the voids of the fabric dense and improve the water resistance. The calendering conditions were as follows: hot steel roll temperature 130-180 ° C, pressure 5
What is necessary is just to carry out under the conventional conditions of about 0 to 200 kg / cm. The present invention has the above configuration.

[0015]

In the high-density fabric obtained by the conventional method, it is difficult to completely remove the sizing agent, the high-melting paraffin, the oligomer, etc., so that the film formation of the water-repellent resin is poor.
There is a drawback that the washing durability of the waterproof property is greatly reduced, and there is a drawback that dyeing unevenness is likely to occur due to a synergistic effect of the influence of the residue on the fiber surface and the effect of the ring dyeing phenomenon that only the front and back of the cloth are dyed by the densely structured cloth. Was.

As in the method of the present invention, when weaving a high-density woven fabric, the single yarn is 0.3 to 1.1 denier and the total fineness is 60 to 1
When weaving is performed at a high density using a 30-denier ultrafine polyester filament so that the sum of the cover factors becomes 1700 to 2500, the fabric can have strength and feeling suitable for sports clothing, and such high After performing limited alkaline dyeing with a carrier on the high-density woven fabric and performing water repellent treatment and calendering treatment with a processing agent containing a fluorine-based water repellent, the scouring action of the alkali dyeing and the accelerated dyeing action of the carrier cause Leveling is achieved while removing the residue completely, and the water-repellent resin is evenly coated on the fiber surface. At the same time, the ultrafine fibers are calendered to form a dense, high-density fabric. A high-density woven fabric with no unevenness and excellent waterproofness.

[0017]

EXAMPLES Next, the present invention will be described more specifically with reference to examples. The measurement and evaluation of the fabric in the examples were performed by the following methods. (1) Water resistance: JIS L-1092 low water pressure method, high water pressure method (2) Water repellency: JIS L-1092 spray method (3) Moisture permeability: JIS L-1099 calcium chloride method, A-method (4) Tear strength: JIS L-1096 Pendulum method (5) Washing method: JIS L-0217 103 method

(6) Dyeing quality: Judgment was made visually as follows. : No staining unevenness ×: Dyeing unevenness (7) Hand: Flexibility was judged as follows by sensory inspection by handling. ○: soft △: slightly hard ×: hard

Example 1 Using polyester filaments 110d / 348f (single yarn fineness 0.316d), the warp density was 122 threads / inch, the weft density was 90 threads / inch, and the sum of the cover factor was 2224.
Was woven on a rapier loom. Next, using a continuous desizing scouring machine, spread the sun molding BR-7
0 (anionic / nonionic activator manufactured by Nichika Chemical Co., Ltd.)
After desizing and scouring at a temperature of 95 ° C. and a time of 1 minute under a prescription of 1 g / l and sodium hydroxide 1 g / l, the product was dried and pre-set at a temperature of 190 ° C. for a time of 30 seconds. Using a circular jet dyeing machine,
Bath ratio 1:30, pH 8.6, temperature 130 in the following prescription 1
Staining was performed at 30 ° C. for 30 minutes.

Formulation 1 Miketon Polyester Red 3BSF 2% owf (Mitsui Toatsu Dye Co., Ltd., disperse dye) Dispar TL 1 g / l (Meisei Chemical Co., Ltd., dispersant) Olinax AM-85 2 g / l (Meijin IP carrier F 2% owf (manufactured by YAS Co., Ltd., chlorobenzene carrier)

Bisnol P-5 was added to the dyed cloth obtained here.
5 (one-bath oil and fat industry Co., Ltd., one-bath reduction cleaner) 5 g
Washing under reduced pressure / temperature of 80 ° C. for 10 minutes was carried out by the above-mentioned circular jet dyeing machine, and then dried. Next, it is impregnated with a treatment solution of the following formula 2, squeezed with a mangle under the condition of a squeezing ratio of 40%, dried, and heat-treated at a temperature of 180 ° C. for a time of 30 seconds. Roll temperature 170 ° C, pressure 1
Calendering was performed under the conditions of 00 kg / cm and a speed of 10 m / min to obtain a high-density woven fabric according to the method of the present invention.

Formula 2 Asahigard AG-970 80 g / l (Asahi Glass Co., Ltd., fluorinated water repellent) Sumitex Resin M-3 3 g / l (Sumitomo Chemical Co., Ltd., melamine resin) Sumitex Accelerator ACX 1 g / Liter (Catalyst for melamine resin, manufactured by Sumitomo Chemical Co., Ltd.)

For comparison with the method of the present invention, in Example 1, Formulation 3 was used instead of Formulation 1 and the pH was adjusted to 5.0.
Other than the above, a high-density woven fabric of Comparative Example 1 was obtained in exactly the same manner as in Example 1. Formulation 3 Miketon Polyester Red 3BSF 2% owf (Mitsui Toatsu Dye Co., Ltd., disperse dye) Dispar TL 1 g / l (Meisei Chemical Co., Ltd., dispersant) Acetic acid 0.2 cc / l

Further, for comparison with the present invention, the fabrics of Comparative Examples 2 to 7 having different weaving conditions as shown in Table 1 were used instead of the fabrics used in the present Example. In the same manner as in Example 1, high-density woven fabrics of Comparative Examples 2 to 7 were obtained.

The fabrics according to the method of the present invention and Comparative Examples 1 to 7 were measured and evaluated, and the results are shown in Table 1.

[0026]

[Table 1]

As is clear from Table 1, the high-density woven fabric obtained by the method of the present invention has no uneven dyeing, has little decrease in waterproofness after washing, has no problem in strength, and has excellent moisture permeability and waterproofness. And had a soft texture.

Example 2 Polyester filament 85d / 204f (single yarn fineness)
Using 0.417d), the warp density is 125 threads / inch, the weft density is 97 threads / inch, and the sum of the cover factors is 2042.
Was woven on a rapier loom. Less than,
Under the same conditions as in Example 1, desizing scouring, presetting, alkali dyeing, water-repellent finishing, and calendering were performed to obtain a high-density woven fabric according to the method of the present invention.

For comparison with the method of the present invention, after weaving under the same conditions as in Example 2, first, the pH was adjusted to pH 1 by the following formula 4.
Except for dyeing in Example 2, processing was performed under exactly the same conditions as in Example 2 to obtain a high-density woven fabric of Comparative Example 8. Formulation 4 Miketon Polyester Red 3BSF 2% owf (Mitsui Toatsu Dye Co., Ltd., disperse dye) Disper TL 1 g / l (Meisei Chemical Co., Ltd., dispersant) Sodium hydroxide 0.3 g / l IP carrier F 2% owf (Miyako Yushi Kogyo Co., Ltd., chlorobenzene carrier)

Next, for comparison with the method of the present invention, a high-density woven fabric was produced in exactly the same manner as in Example 2 except that the IP carrier F was omitted from Formulation 1 used in the alkaline dyeing of Example 2. (Comparative Example 9) was obtained. For comparison with the method of the present invention, in Example 2, except that the dyeing was performed at 110 ° C. and 140 ° C., respectively, processing was performed in exactly the same manner as in Example 2;
0,11 high density fabrics were obtained.

The woven fabrics according to the present invention and Comparative Examples 8 to 11 were measured and evaluated, and the results are shown in Table 2.

[0032]

[Table 2]

As is evident from Table 2, the high-density woven fabric obtained by the method of the present invention has no uneven dyeing, has little decrease in waterproofness after washing, has no problem in strength, and has excellent moisture permeability and waterproofness. And had a soft texture.

[0034]

According to the method of the present invention, there is no uneven dyeing,
It is possible to obtain a high-density fabric having excellent moisture permeability and waterproofness, and having a soft feeling, with little decrease in waterproofness after washing and no problem in strength. The high-density woven fabric obtained by the method of the present invention has excellent waterproofness and dyeing quality, and has strength and feeling suitable for clothing, so that it can be used for sports clothing such as windbreakers, ski wear, and mountain climbing wear. And outer clothing such as coats and jackets.

Claims (1)

[Claims] The sum of the cover factor of the warp and the weft is 170 using a polyester filament having a single yarn fineness of 0.3 to 1.1 denier and a total fineness of 60 to 130 denier.
After weaving a high-density woven fabric of 0 to 2500 and desizing and scouring it in a spread form, it is dyed with a disperse dye at a temperature of 120 to 140 ° C. in an alkaline bath containing pH 8.5 to 10.5 containing a carrier. A water-repellent treatment with a processing agent containing a fluorine-based water-repellent, followed by calendering.