WO2007086593A1

WO2007086593A1 - Stretch fabric

Info

Publication number: WO2007086593A1
Application number: PCT/JP2007/051538
Authority: WO
Inventors: Tetsutaro Fumishi; Kingo Tanaka; Katsuhiko Yanagi; Takuya Suehiro
Original assignee: Seiren Co., Ltd.
Priority date: 2006-01-24
Filing date: 2007-01-24
Publication date: 2007-08-02
Also published as: TW200736445A; TWI391545B; JP5171268B2; JPWO2007086593A1

Abstract

A stretch fabric which is constituted of extractable non-elastic fibers, non-extractable non-elastic fibers, and elastic fibers and has an extractable part and a non-extractable part. The extractable non-elastic fibers comprise cationic-dyeable polyester fibers, and the elastic fibers comprise alkali-resistant polyurethane fibers. The non-extractable non-elastic fibers have a strength coefficient of 160,000 or higher.

Description

Specification

Elastic fabric

Technical field

The present invention relates to a stretchable fabric, and more particularly, to a stretchable fabric having at least two different stretchable elastic regions on the same fabric and having a color pattern expressed as necessary.

Background art

In recent years, high-performance fabrics aimed at functions such as improvement of motor functionality, fatigue recovery function, fatigue reduction function, body shape correction, or body shape correction using various methods have been developed. Development is expanding. One of these is a highly stretchable fabric using elastic fibers such as polyurethane fibers, which are used in sports and inner fields. These products reduce discomfort when worn, and give the necessary stress to the necessary parts according to the purpose.

As a method of applying stress to each required part, a method of changing the weaving and knitting conditions such as changing the fineness and type of yarn used or changing the structure, a method of applying resin to a predetermined part, and a predetermined part being plucked And a method of laminating a tape-like material in a predetermined place.

The method of changing the weaving and knitting conditions makes it easy to obtain a stress difference and easy to control the stress, but changing the fineness of the yarn, the type of yarn, and changing the structure can make the appearance uncomfortable, and the feeling of wearing May get worse.

The method of applying the resin is a method of changing the stretchability of the fabric in the resin application region, and it is easy to control the stress freely in the fabric, but since the resin is applied, the texture of the fabric tends to become hard, and the feeling of wear May be worse. In addition, there is concern about durability due to a decrease in air permeability of the resin-applied part, resin breakage, cracking, peeling, etc. caused by repeated wearing or washing.

The method of laminating a fabric tape-like material employs adhesion, sewing, etc., so it is easy to obtain a stress difference, but this also makes the texture harder due to the adhesive resin, and the thickness of the pasted part increases. There is a risk that the feeling of wearing will be impaired. In addition, the laminated fabric may be peeled off. In sewing, steps or irregularities occur in the sewing part, and it touches the skin surface. There are problems such as anxious.

In addition, many techniques have been disclosed for the removal processing method. For example, in Japanese Patent Application Laid-Open Nos. 2-9 1 2 8 8 and 3 8 6 7, a fiber fabric sheet treated with an amine (such as triethanolamine) as a fiber embrittlement agent is further alkali-treated. Thus, there has been proposed a method of discharging which makes the modified polyester fiber hydrolyze. However, the above method using amines as a fiber embrittlement agent also causes the fibers to remain other than the modified polyester fiber to be embrittled, and the strength of the fibers is reduced, so that the types of fibers that can be used are limited.

In addition, when the removal process is performed, elastic fibers are easily exposed on the surface of the fabric in the removed part. Therefore, when the fabric is exposed to ultraviolet rays such as sunlight, there is a problem that the elastic fiber becomes brittle and the stretchability is lowered.

Disclosure of the invention

Object of the invention

An object of the present invention is to solve the above-mentioned problems of the prior art, and in particular, a stretchable part having a different elastic modulus that is excellent in breathability and durability without impairing the texture and wearing feeling. It is to provide a stretchable fabric comprising an extracted portion and a non-extracted portion that suppresses embrittlement of an elastic fiber.

Summary of invention

A first aspect of the present invention is composed of an extractable non-elastic fiber, a non-extractable inelastic fiber, and an elastic fiber, and has an extracted portion and a non-extracted portion. A stretchable fabric characterized by comprising a cationic dyeable polyester fiber, an elastic fiber comprising an alkali-resistant polyurethane fiber, and a strength coefficient of the non-pumping inelastic fiber being 1700, 00 or more. It is.

The second aspect of the present invention is a polyurethane fiber having a strength maintenance rate of 60% or more after being immersed in a 6% strength aqueous caustic soda solution for 5 minutes at room temperature. 2. The stretchable fabric according to 1 above.

Thirdly, according to the present invention, the proportion of the constituent fibers before the discharge treatment is 30 to 55% for the cationic dyeable polyester fiber, 25 to 55% for the non-elastic fiber, and 10 to 4 for the polyurethane fiber. The stretchable fabric according to the above or 2 which is 5%.

Fourthly, the stretchable fabric according to any one of 1 to 3 above, wherein the erosion strength of the extracted portion is 20 OKPa or more.

Fifth, the present invention provides the stretchable fabric according to any one of the above 1 to 4, wherein the non-exhaustable inelastic fiber is a nylon fiber, and the elastic fiber is an ether polyurethane fiber. Sixthly, the present invention provides the stretchable fabric according to any one of 1 to 5 above, to which an ultraviolet absorber is applied.

The seventh aspect of the present invention is the stretchable fabric according to the sixth aspect, wherein the application of the ultraviolet absorber is performed by post-processing of a benzotriazole ultraviolet absorber containing chlorine in the structure. Eighthly, according to the present invention, the stress retention rate of the extracted portion after irradiation with a strong bon-arc lamp for 40 hours is 90% or more, and the stress at the time of 30% elongation of the extracted portion is not extracted. It is 20 to 85% of the stress at the time of elongation of 30% of the etched portion, and the breaking strength of the neutral fiber in the removed portion is 90% or more of the breaking strength of the neutral fiber in the non-exhausted portion. The stretchable fabric according to any one of 1 to 7 above. .—

The invention's effect

The fabric having the extracted portion and the non-extracted portion according to the present invention suppresses a decrease in strength of non-elastic fibers and elastic fibers other than the extracted non-elastic fibers, and the predetermined portions are different in the stretched elasticity. It has a part and shows good stretchability over a long period of time.

BEST MODE FOR CARRYING OUT THE INVENTION

The fabric of the present invention is composed of two or more kinds of non-elastic fibers including polyester-based fibers and alkali-resistant polyurethane fiber fibers, and a non-discharged portion and a non-exhaust portion where the polyester-based non-elastic fibers are selectively discharged. A non-elastic fiber is a cationic dyeable polyester fiber, and a non-extractable fiber is a non-extractable fiber. It is a stretchable fabric characterized by comprising fibers.

The alkali resistance of alkali-resistant polyurethane fibers can be confirmed by measuring the strength retention after immersion in a 6% strength aqueous caustic soda solution at room temperature (20 ° C) for 5 minutes. Preferably there is. As the non-weathering fiber used in the present invention, two types are used, one that is not removed and one that is removed.

In the present invention, a cation-soluble polyester fiber is used as the inelastic fiber to be removed. An atmospheric pressure type or high pressure type cationic dyeable polyester fiber is preferred, but an atmospheric pressure type cationic dyeable polyester fiber is particularly preferred from the viewpoint of excellent pitting resistance.

The non-elastic fibers that are not removed include natural fibers such as cotton and hemp, synthetic fibers such as polyester fibers and polyamide fibers, or regenerated fibers such as rayon and semi-synthetic fibers such as cellulose acetate. Although not particularly limited, those having an intensity coefficient of 1 70, 0 0 0 or more are used. Usually, nylon fibers and polyethylene terephthalate fibers are preferably used. In particular, nylon fiber is preferable in terms of strength, durability and dyeing fastness.

In the present invention, an elastic fiber is used in combination with a plurality of types of non-elastic fibers having different pitting properties. As described above, the strength-resistant polyurethane resinous fiber is used as the elastic fiber.

Specifically, it is preferable to use a polyurethane fiber having a strength maintenance ratio of 60% or more after being immersed in caustic soda having a concentration of 6% at room temperature for 5 minutes in terms of resistance to corrosion. Polyurethane fibers are preferred. If the strength retention rate of polyurethane after immersion in caustic soda is less than 60%, the necessary stress may not be obtained in the removed area.

In addition, the fabric used in the present invention has 30 to 55% cationic dyeable polyester fiber, 25 to 55% non-extractable inelastic fiber, and 10% wrinkle fiber before the discharge treatment. It is preferable that the composition is composed of ˜30%. If the amount of the cationic dyeable polyester is less than 45%, the necessary stress may not be obtained in the non-exhausted area. If it exceeds 55%, the stress difference between the extracted area and the non-exhausted area is large. The wearing feeling may be impaired.

Further, if the proportion of non-elastic fiber fibers that are not removed is less than 25%, the required burst strength may not be obtained, and if it exceeds 55%, the stretchability may be impaired. In addition, if the ratio of the neutral fiber is less than 10%, the necessary stress may not be obtained. Yes, if it exceeds 45%, fastness such as washing fastness may not be secured during dyeing.

In addition, the strength coefficient of the non-exhaustable non-repellent fiber needs to be 1700, 00 or more, and if the strength coefficient is less than 1700, 00, the burst strength of the excised part is low. There is a risk that it will not be obtained sufficiently.

Furthermore, it is preferable that the burst strength of the removed portion is 20 O K Pa or more.

The elastic fiber and the two or more types of non-elastic fibers used in the present invention can be used in an appropriate yarn shape such as single, mixed spinning, mixed fiber, mixed twist, cross-twisted, and aligned yarn. The fineness of the yarn is not particularly limited.

Examples of the form of the fabric include a knitted fabric and a woven fabric, but are not particularly limited.

By performing a discharge treatment on the fabric obtained by the above-described configuration, a fabric in which a discharge portion and a non-discharge portion are formed is obtained. The extracted part is mainly composed of elastic fibers and non-extractable inelastic fibers, and the non-extracted part is composed of elastic fibers, extractable inelastic fibers and non-extractable inelastic fibers. However, a part of the extractable inelastic fiber can also be left in the removed portion by weakening the removal treatment conditions.

The discharge treatment can be performed by discharging a cationic dyeable polyester fiber, which is a dischargeable non-wetting fiber, and applying an appropriate discharge processing agent that does not discharge other constituent fibers to the fabric. .

Examples of the removal processing agent include guanidine weak acid salts, phenols, alcohols, alkali metal hydroxides, and alkaline earth metal hydroxides, which are conventionally known removal processing agents. The concentration of the removal processing agent can be appropriately determined. A quaternary ammonium salt can also be used as an extraction aid. Inelastic elasticity that removes the material without affecting the other components by applying steaming heat treatment with steam for 1 to 30 minutes after applying the removal processing agent to the fabric. The fiber can be discharged.

As a method for applying the removal processing agent to the fabric, at least one method selected from a dipping method, a pad-roll method, a calendar method, an ink jet printing method, a padding method, a textile printing method, a spray method and the like can be used. There is no particular limitation as long as the liquid containing the removal processing agent can be uniformly applied to the portion to be removed. In the present invention, it is preferable to apply an ultraviolet absorber to a stretchable fabric having a removed portion and a non-extracted portion by post-processing inside the fiber to be used.

In particular, it is preferable to use ether-based polyurethane fiber spun in a state containing a phenolic antioxidant or an organic ultraviolet absorber as the elastic fiber. Furthermore, it is preferable to use a benzotriazole-based UV absorber as the organic UV absorber. The phenolic antioxidant or the organic ultraviolet absorber only needs to be added before the spinning step of polyurethane, and can be added to the raw material to such an extent that it does not affect the polymerization reaction of the resin that becomes the fiber. Further, it can be blended after the polymerization of the resin to be fibers is completed, but it is preferably blended between the end of polymerization of the resin and before spinning. The spinning apparatus and spinning conditions used for spinning are not particularly limited, and any known method can be selected depending on the resin composition, application, purpose, yarn physical properties, and the like.

Further, it is preferable to add a benzotriazol ultraviolet absorber containing chlorine in the structure by post-processing. Benzotriazole-based UV absorbers that contain chlorine in the structure include 2— (2, —hydroxy—3′—t-butyl-5, 1-methylphenyl) —5—-clobenzobenzolazole, 2-— (2, -Hydroxy-1,3,5, -di-tert-butylphenyl) -15-clobenzobenzotriazole. Since the benzotriazole-based ultraviolet absorber containing chlorine as described above is ionically bonded to the amino terminal group in the polyurethane fiber, embrittlement due to ultraviolet rays can be effectively suppressed. If UV absorbers other than benzotriazole-based UV absorbers containing chlorine are used in the structure, embrittlement of polyurethane fibers due to UV rays may not be sufficiently suppressed. The application of the above benzotriazole-based UV absorber can be carried out in any step after the fabric is obtained. In particular, when dyeing the fabric, the benzotriazole UV absorber is used together with the dye. It is preferable to give. At that time, the benzotriazol ultraviolet absorber is preferably applied in an amount of 0.1 to 20.0% by weight, particularly 3.0 to 8.0% by weight, based on the weight of the fabric. preferable. If the application amount of the benzotriazole ultraviolet absorber is less than 0.1% by weight, the polyurethane fiber may not be embrittled by ultraviolet rays. In addition, a benzotriazole UV absorber When the amount exceeds 20.0% by weight, the high stretchability of the polyurethane fiber tends to be inhibited, or even if the fabric is dyed, it tends to be difficult to express a clear hue. As described above, it is preferable to apply the organic UV absorber twice before spinning and after finishing after fabric production.

After applying a benzotriazole UV absorber to the above fabric, heat treatment is applied. By the heat treatment, the benzotriazole UV absorber is adsorbed on the polyurethane fiber. This heat treatment can be carried out in a finishing set process that is usually performed after dyeing. The heat treatment is preferably performed at a temperature of 100 ° C. or higher for a period of several seconds to several minutes.

In the stretchable fabric of the present invention, it is preferable that the stress retention after irradiation of the carbon arc lamp for 40 hours in the removed portion is 90% or more before irradiation of the carbon arc. If the stress retention rate is less than 90%, the removed portion may be torn during use or the stretchability may be reduced.

The stress at the time of 0% elongation of the extracted portion is preferably 20 to 85% of the stress at the time of 30% elongation of the non-extracted portion. If the stress ratio is less than 20%, it is difficult to obtain a feeling of tightening, and there is a possibility that recovery after stretching may not be sufficiently achieved, and effects such as improvement in motor functionality and body shape correction may not be obtained.

If the stress ratio is greater than 85%, it is difficult to obtain a stress difference between the removed portion and the non-exposed portion, and the intended functional effect may not be obtained.

In addition, it is preferable that the breaking strength of the elastic fiber in the pitting portion is 90% or more of the breaking strength of the elastic fiber in the non-pitting portion. If the rupture strength ratio is less than 90%, the removed portion may be torn at the time of wearing, or the stretchability may be lowered.

These characteristics can be easily achieved by a combination of the above-mentioned non-treated fabric, a discharge treatment and an ultraviolet absorber.

In the stretchable fabric of the present invention, a pattern, a color, and the like may be added to an arbitrary region of the above-described discharged portion and the non-extracted portion.

Example

Hereinafter, examples of the present invention will be described together with comparative examples to specifically explain the present invention. The description is not limited by the following examples. “%” In Examples and Comparative Examples represents “% by weight”.

Moreover, the measuring method of the characteristic value in an Example is shown below. All were measured in a 20 t, 65% RH atmosphere unless otherwise noted.

(Stress ratio of the removed part to the unexposed part)

Using an autograph (manufactured by Shimadzu Corporation), prepare a sample with a width of 25 mm, a tensile length of 100 mm, and a chuck gripping length of 100 mm, and after extending it to 180 mm (80% elongation) at a speed of 300 mmZmin, load Remove to remove the initial setting of 100mm. This operation was repeated three times, and the load at 30% extension (30% extension force) was read from the third SS force, and used as the stress value. The stress value of the non-exhausted part is S. The stress value of the excised part is S! Was calculated from the following formula 1. Stress ratio (%) = Si ÷ S ₀ X 100 (1)

(Break strength ratio between elastic fibers in the extracted part and elastic fibers in the non-extracted part)

Using an autograph (manufactured by Shimadzu Corporation), prepare an elastic fiber with a pulling length of 100 mm and chuck grip length of 100 mm in an atmosphere of 20 ° C and 65% RH, and stretch at a speed of 30 Omm / min. And break and measure the strength at break. A. The strength at break of elastic fiber taken from the non-excavated site. Let A i be the strength at the time of breakage of the elastic fiber collected from the material of the excised part. The fracture strength ratio is calculated according to Equation 2 below. Breaking strength ratio (%) = A ÷ A. X 100 (2) (Stress retention after UV irradiation)

The fabric was irradiated with ultraviolet rays by the carbon arc lamp method (63) according to J is L 0842-1988. Irradiate for 40 hours using a UV carbon arc lamp light resistance tester. Next, the stress retention was evaluated by the following method. Using an autograph (manufactured by Shimadzu Corporation), prepare a sample with a width of 25 mm, a pulling length of 100 mm, and a chuck gripping length of 10 Omm, and a speed of 30 Omm / min. After extending to (long), remove the load and restore to the initial setting of 100 mm. Repeat this operation three times and read the load at 30% extension (30% extension stress) from the third SS curve.

T is defined as the untreated value of the third 30% elongation stress of the fabric of the removed portion before the light resistance test. The T ^ stress retention is calculated as shown in Equation 3 below for the third 30% elongation stress of the fabric in the removed area after the light resistance test. Stress retention (%) = T ÷ T _Q X 100 (3)

(Evaluation test for resistance to polyurethane fibers)

The polyurethane fiber to be used is immersed in a 6% aqueous solution of caustic soda at room temperature for 5 minutes and then air-dried. The urethane fiber is wet-heated at 160 ° C for 10 minutes with 50% stretched, and then heated to 40 ° C. After washing with hot water, it was naturally dried. Thereafter, the tensile strength at break was measured at n = 5 with an auto-draft (a tensile strength tester manufactured by Shimadzu Corporation). The breaking strength ratio with the untreated polyurethane fiber was calculated.

(Strength coefficient of non-exhaustable inelastic fiber fiber)

Strength factor = (Fineness (dt ex) X Single yarn strength (CNZd tex) X Density per unit area (course X well or vertical density X horizontal density) X Elastic fiber mixing ratio

The single yarn strength was calculated as 5CNZd t e X for Ny and 6 CNZd t e x for PET. Example 1

6 nylon fiber (Toray Industries, Ltd., 33 dte xZ26 f), pressure-dyeable cationic dyeable polyester fiber (Mitsubishi Rayon Co., Ltd. 56 dte xZ36 f), and ether yarn polyurethane fiber (Toyobo ( Co., Ltd. ESPA T-1 71, single yarn fineness 44d t ex alkali resistance test 65%), warp knitted atlas structure 40.0% nylon fiber, normal pressure thione dyeable polyester fiber 40.0 A composite fabric (thickness lmm) consisting of 1% by weight and 20.0% by weight of polyurethane fibers was used.

On the surface of the fabric, a treatment liquid comprising the following prescription 1 containing a quaternary ammonium salt is applied to the screen. Stripe printing was performed using a lean printing machine, and then steaming was performed for 15 minutes in superheated steam at a temperature of 110 ° C to absorb the quaternary ammonium salt contained in the printing paste into the fabric. Next, washing with water at 30 ° C. for 10 minutes, and further washing with hot water at 60 ° C. for 10 minutes, the printing paste adhering to the fiber fabric sheet surface remains. The 4th grade ammonium salt was completely removed. Next, as a pitting process, after immersion for 30 minutes in a 1.2% strength by weight sodium hydroxide aqueous solution at a temperature of 90 ° C, it was removed after stirring, and the attached sodium hydroxide was completely removed. In order to remove it, it was further washed with 70 ° C hot water for 5 minutes three times. Then, it was dried at 130 ° C for 2 minutes with a dryer.

[Prescription 1]

Lakkor CT—2000 20%

(Meisei Chemical Industry Co., Ltd., 4th grade ammonium salt)

Fujikemi HEC BL 30 40%

(Hydroxyethyl cellulose manufactured by Fuji Chemical Co., Ltd.)

40% water, then 2— (2-hydroxy-3,5-di-t-butyl) as a UV absorber — 5-chloro-benzotriazole 20. 0% owf, acetic acid 1. O c cZ 1, aqueous solution The above fabric was subjected to an immersion treatment at 100 ° C. for 30 minutes. The evaluation results are shown in Table 1.

Example 2

To the fabric used in Example 1, the treatment liquid having the following formulation 2 was administered by a padding method so as to be 2 gZm ² in terms of solid content, and dried at 170 ° C. for 2 minutes to form an ink receiving layer. .

[Prescription 2]

DKS Fine Gum HEL— 1 2%

(Etherized Carpoxymethylcellulose, manufactured by Daiichi Kogyo Seiyaku Co., Ltd.)

MS Liquid 5% (manufactured by Meisei Chemical Industry Co., Ltd., nitrobenzene sulfonate, reduction inhibitor, Active ingredient 30%) Water 93% Next, an extraction sink of the following prescription 3 was printed in a stripe shape on an on-demand type serial scanning type ink jet printing apparatus on a fabric on which an ink receiving layer was formed.

[Prescription 3]

Guanidine carbonate (fiber decomposition agent) 20% Urea (dissolution stabilizer) 5% Diethylene glycol (drying inhibitor) 5% water 70% Furthermore, after drying the fabric, using HT steamer at 160 ° C 20 Wet heat treatment for a minute. Furthermore, it was cleaned by treating for 10 minutes at 50 in a soaking bath containing 2 g / L of Tripol TK (Daiichi Kogyo Seiyaku Co., Ltd., nonionic surfactant) and 2 gZL of soda ash. After that, it was washed with water and dried to obtain a discharge processed product.

Then add 2- (2-hydroxy-3,5-dipropyl) -5-trioxybenzoylazol. 20. 0% owf, acetic acid 1. O cc / 1, as an ultraviolet absorber. The fabric was dipped at 100 ° C for 30 minutes. The evaluation results are shown in Table 1.

Example 3

Regular polyester fiber (manufactured by Toray Industries, Ltd., 33 dte xZ26 f), atmospheric pressure dyeable type cationic dyeable polyester fiber (manufactured by Mitsubishi Rayon Co., Ltd., 33 dtex / 36 f), and ether yarn polyurethane fiber ( Regular polyester fiber 43.0% by weight, normal pressure thione dyeable polyester fiber, with a warp knitted half structure consisting of ESPA T-1 71, manufactured by Toyobo Co., Ltd., single yarn fineness 44 dte, anti-kali strength test 65%) A composite fabric (thickness lmm) consisting of 43.0 wt% and polyurethane fibers 14.0 wt% was processed under the same conditions as in Example 1. Table 1 shows the evaluation results.

(Comparative Example 1)

6 Nylon fiber (Toray Industries, Ltd., 33 dtex / 26 f) From cationic dyeable polyester fiber (Mitsubishi Rayon Co., Ltd. 56 dtex / 36 f) and ether ester elastic yarn (Teijin Co., Ltd. Lexe, single yarn fineness 44 dte X Alkali strength retention 40%) A composite fabric (thickness lmm) consisting of nylon fiber 40.0% by weight, normal pressure thione dyeable polyester fiber 40.0% by weight, polyurethane fiber 20.0% by weight is used. It was.

On the surface of the fabric, a treatment liquid comprising Formula 1 containing a quaternary ammonium salt was printed in stripes using a screen printing machine and dried at a temperature of 110 for 2 minutes. Thereafter, steaming was performed for 15 minutes with superheated steam at a temperature of 110 to absorb the quaternary ammonium salt contained in the printing paste into the fabric. Next, washing with water at 30 ° C for 10 minutes, followed by washing with hot water at 60 ° C for 10 minutes, the printing paste adhering to the fiber fabric sheet surface remains. Completely removed quaternary ammonium salt. Next, in order to remove the attached sodium hydroxide completely, it was immersed in an aqueous solution of sodium hydroxide at a temperature of 90 and a concentration of 1.2% by weight for 30 minutes and removed after stirring. Further, it was washed with warm water of 70 times for 5 minutes three times. Then, it was dried for 2 minutes at 13 with a dryer.

Then, 2- (2-hydroxy-3,5-di-t-butylphenol) _ 5-black mouth-benzotriazol 20.0% owf, acetic acid 1.0 cc / K as UV absorber containing chlorine The fabric was immersed in the aqueous solution at 100 for 30 minutes. Table 2 shows the evaluation.

(Comparative Example 2)

6 nylon fiber (Toray Industries, Ltd., 33 dte xZ26 f), atmospheric pressure-dyeable cationic dyeable polyester fiber (Mitsubishi Rayon Co., Ltd. 56 dte xZ36 f), and ether yarn polyurethane fiber ( Made of Toyobo Co., Ltd. ESPA T-71, single yarn fineness 44d tex Alkali strength retention rate 65%), warp knitted atlas fabric, nylon fiber 20. 0% by weight, normal pressure thione dyeable polyester fiber A composite fabric (thickness lmm) composed of 60.0% by weight and polyurethane fiber 20.0% by weight was used.

A treatment liquid consisting of Formula 1 containing quaternary ammonium salt is screened on the fabric surface. Using a lint machine, it was printed in stripes, and then steamed with superheated steam at a temperature of 110 ° C for 15 minutes to absorb the quaternary ammonium salt contained in the printing paste into the fabric. Next, 7K washing treatment is performed in water at 30 ° C for 10 minutes, and further by washing with hot water for 10 minutes at 60 ° C, the printing paste adhering to the surface of the fiber fabric sheet remains. Completely removed 4th grade ammonium salt. Next, as a pitting process, after being immersed in an aqueous solution of sodium hydroxide at a temperature of 90 ° C and a concentration of 1.2% by weight for 30 minutes, it was removed after stirring and completely removed the attached sodium hydroxide. In order to do this, it was further washed three times with warm water at 70 ° C for 5 minutes. Then, it was dried at 130 ° C for 2 minutes with a dryer.

Thereafter, the above fabric was added to an aqueous solution of 2- (2-hydroxy-3,5-di-t-butylphenyl) — 5-chloro-benzotriazol 20.0% owf, acetic acid 1.0c cZl as an ultraviolet absorber. Immersion treatment was performed at 100 for 30 minutes. The evaluation is shown in Table 2. (Comparative Example 3)

6 nylon fiber (Toray Industries, Ltd., 33 dtex / 26 f), atmospheric pressure dyeable cationic dyeable polyester fiber (Mitsubishi Rayon Co., Ltd., 56 dte xZ36 f), and ether yarn polyurethane fiber ( Made of Toyobo Co., Ltd. Espa T-71, single yarn fineness 44d t ex Alkali strength retention 65%), warp knitted atlas fabric, 30.0% nylon fiber, normal pressure thione dyeable polyester fiber 4 5.0% by weight, the polyurethane fibers 25. from 0 wt% composite fabric (thickness lmm), formulation 2 consists of the treatment liquid with padding method to be 2 g / m ² on a solid basis And dried at 170 ° C. for 2 minutes to form an ink receiving layer.

Next, the ink for pre-extraction of Formula 3 was printed in stripes on the fabric on which the ink receiving layer was formed, using an on-demand type serial scanning ink jet printing apparatus.

Further, after the fabric was dried, it was subjected to wet heat treatment at 160 for 20 minutes using an HT steamer. Furthermore, after washing by treating for 10 minutes at 50 ° C in a soaping bath containing 2 g ZL of Tripol TK (Daiichi Kogyo Seiyaku Co., Ltd., nonionic surfactant) and 2 g / L of soda ash, It was washed with water and dried to obtain an extracted processed product.

Then, 2- (2-hydroxy-3,5-di-tert-butylphenyl) —5-chloro-benzotriazole 20. 0% owf, acetic acid 1. O c cZ The above fabric was immersed in the aqueous solution 1 at 30 for 30 minutes. The evaluation results are shown in Table 2.

Table 2

Industrial applicability

The stretchable fabric of the present invention does not impair the texture and wearing feeling, is excellent in breathability and durability, and is suitable for use as clothes in sports and inner fields.

Claims

The scope of the claims

1. Consists of non-extractable non-elastic fibers, non-extractable non-elastic fibers, and elastic fibers, and has an extraction ¾5 and non-exhaustable parts, and the non-extractable non-extractable fibers are force-thin dyeable polyester fibers. A stretchable fabric characterized in that the elastic fiber is made of an alkali-resistant polyurethane fiber, and the strength coefficient of the non-extractable non-elastic fiber is 160,000 or more.

2. The stretchable fabric according to claim 1, wherein the polyurethane fiber is a polyurethane fiber having a strength maintenance ratio of 60% or more after being immersed in a 6% strength aqueous caustic soda solution at room temperature for 5 minutes.

3. The proportion of constituent fibers before the discharge treatment is 30 to 55% for cationic dyeable polyester fibers, 25 to 55% for non-elastic fibers, and 10 to 45% for polyurethane fibers. Elastic fabric.

4. The stretchable fabric according to any one of claims 1 to 3, wherein the fracture strength of the removed portion is 200 KPa or more.

5. The stretchable fabric according to any one of claims 1 to 4, wherein the non-extractable inelastic fiber is a nylon fiber, and the elastic fiber is an ether-based polyurethane fiber.

6. The stretchable fabric according to any one of claims 1 to 5, which is provided with an ultraviolet absorber.

7. The stretchable fabric according to claim 6, wherein the application of the ultraviolet absorber is performed by post-processing of a benzotriazole-based ultraviolet absorber containing chlorine in the structure.

8. The stress retention rate of the extracted part after irradiation with carbon arc lamp for 40 hours is 90% or more, and the stress at the time of 30% extension of the extracted part is the stress at the time of 30% extension of the non-extracted part. The elongation according to any one of claims 1 to 7, wherein the breaking strength of the elastic fiber in the extracted portion is 90% or more of the breaking strength of the elastic fiber in the non-extracted portion. Shrinkable fabric.