TWI391545B - Stretch fabric - Google Patents

Description

Stretchable fabric

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 imparting a pattern as needed.

In recent years, a highly functional fabric that has been developed for various functions such as motor functional improvement, fatigue reduction, fatigue reduction, body shaping, or body shape correction has been developed, and the development of products has been expanded in various fields. . One of them has a highly stretchable fabric using elastic fibers such as polyurethane fibers, which can be used in sports or indoor fields. These products are products which can reduce the uncomfortable feeling during wearing and impart necessary stress to the necessary parts according to the purpose.

The method of exhibiting stress at a necessary portion includes a method of changing the fiberiness or type of the yarn to be used, or a method of changing the weaving condition of the structure or the like; a method of imparting a resin to a specific portion; and performing a etching process on a specific portion. The method and the method of laminating a cloth or a tape at a specific place.

The method of changing the weaving conditions, the stress difference is easy to obtain, and it is easy to control the stress. For example, by changing the fiberiness or silk type of the silk, or changing the structure, it may be uncomfortable to be seen, or the wearing feeling may be poor. .

The method of imparting the resin is a method of changing the stretchability of the cloth in the resin region, and the stress is easily controlled in the cloth. However, in order to impart a resin, the texture of the cloth is easily hardened, and the wearing feeling is deteriorated. Further, there is a concern that the air permeability of the resin portion is lowered, the resin is broken, cracked, peeled, or the like caused by repeated wearing or washing, and durability is feared.

The method of laminating the cloth or the tape is easy to obtain a stress difference by a method such as squeezing or slitting, but the texture is hardened by the adhesive resin, and the thickness of the attached portion is increased, which may cause wearing. Feeling damaged. Moreover, the laminated fabric or the like may be peeled off. There is still a problem that a step or unevenness occurs in the sewn portion during sewing, and the skin is in contact with the skin.

Also, many techniques have been disclosed regarding the etching process. For example, a method of etching a fiber cloth sheet which is treated with an amine (triethanolamine or the like) as a fiber embrittlement agent has been proposed in JP-A No. 2-91288 and JP-A No. 3-867. The alkali-treated is carried out to subject the modified polyester fiber to alkali hydrolysis. However, in the above method using an amine as a fiber embrittlement agent, fibers remaining in addition to the modified polyester fiber are also embrittled and the strength is lowered, so that the type of fiber that can be used is limited.

Further, when the etching process is performed, the elastic fibers in the etched portion are easily exposed on the surface of the cloth. Therefore, if the cloth is exposed to ultraviolet rays such as sunlight, the elastic fiber is embrittled and the stretchability is lowered.

(disclosure of the invention) (the purpose of the invention)

The object of the present invention is to solve the problems of the above-mentioned prior art, and in particular to provide a stretchable fabric having a stretchable portion having a different elastic modulus and having excellent air permeability or durability, in particular, A stretchable fabric comprising an etched portion and a non-etched portion capable of suppressing embrittlement of an elastic fiber is provided.

(invention offer)

According to a first aspect of the present invention, there is provided a stretchable fabric comprising: a corroded inelastic fiber, a non-corrosive inelastic fiber, and an elastic fiber, and having a etched portion and a non-etched portion, and etched. The non-elastic fiber is composed of a cationic dyeable polyester fiber, the elastic fiber is composed of an alkali-resistant polyurethane fiber, and the non-corrosive non-elastic fiber has an intensity coefficient of 170,000 or more.

The second aspect of the invention is the stretchable fabric according to the above item 1, wherein the polyurethane having a strength retention ratio of 60% or more after being immersed for 5 minutes at room temperature in a caustic soda aqueous solution having a urethane fiber concentration of 6% is used. Ester fiber.

According to a third aspect of the invention, the stretchable fabric of the above item 1 or 2, wherein the ratio of the constituent fibers before the etch treatment is 30 to 55% for the cationic dyeable polyester fiber and 25 to 55% for the inelastic fiber. Polyurethane fibers are 10 to 45%.

The fourth aspect of the invention is the stretchable fabric according to any one of the items 1 to 3, wherein the etched portion has a breaking strength of 200 KPa or more.

The stretchable fabric according to any one of the above items 1 to 4, wherein the non-corrosive inelastic fibers are Nylon fibers, and the elastic fibers are ether-based polyurethane fibers.

The stretchable fabric according to any one of the items 1 to 5 above, wherein the ultraviolet absorber is provided.

According to a seventh aspect of the invention, the stretchable fabric of the above-mentioned item 6, wherein the ultraviolet ray absorbing agent is applied to the benzotriazole-based ultraviolet ray absorbing agent containing chlorine in the structure.

The reinforced fabric of any one of the above items 1 to 7, wherein the stress retention rate of the etched portion after the irradiation of the carbon arc light for 40 hours is 90% or more, and the elongation of the etched portion is 30%. The stress at the time is 20 to 85% of the stress at 30% elongation of the non-etched portion, and the breaking strength of the elastic fiber in the etched portion is 90% or more of the breaking strength of the elastic fiber of the non-etched portion.

The fabric having the etched portion and the non-etched portion of the present invention is capable of suppressing the decrease in strength of the inelastic fiber or the elastic fiber other than the inelastic non-elastic fiber, and the specific portion is etched and has a stretchable portion It shows good flexibility over a long period of time.

(Embodiment of the invention)

The fabric of the present invention is a stretchable fabric comprising two or more kinds of inelastic fibers containing polyester fibers and alkali-resistant polyurethane fibers, and the polyester-based inelastic fibers are selectively selected. The cloth formed by the etched etched portion and the non-etched portion is preferably composed of a non-elastic fiber composed of a cationic dyeable polyester fiber of a corroded fiber and a non-corroded fiber. The elastic fiber is composed of an ether-based polyurethane fiber.

In the alkali resistance of the alkali-resistant polyurethane fiber, it was confirmed that the strength retention after immersion for 5 minutes at a normal temperature (20 ° C) in a 6% aqueous solution of caustic soda is preferably 60% or more.

The inelastic fibers used in the present invention use two types of non-etched and etched.

In the present invention, a cationically soluble polyester fiber can be used as the non-elastic fiber to be etched. It is preferably a cationic dyeable polyester fiber of a normal pressure type or a high pressure type, but in terms of excellent etchability, it is particularly preferably a cationic dyeable polyester fiber of a normal pressure type.

The non-elastic fiber which is not etched may be a synthetic fiber such as cotton or hemp, a synthetic fiber such as polyester fiber or polyamide fiber, or a semi-synthetic fiber such as regenerated fiber or cellulose acetate. Any of the fibers is not particularly limited, but an intensity coefficient of 170,000 or more can be used. It is generally preferred to use nylon fibers or polyethylene terephthalate fibers, and in particular, in terms of strength, durability or dye fastness, nylon fibers are preferred.

In the present invention, an elastic fiber is used in combination with a plurality of types of inelastic fibers different from the above-described erosion, but the elastic fiber is an alkali-resistant polyurethane fiber as described above.

Specifically, in terms of corrosion resistance, it is preferred to use a polyurethane fiber having a strength retention ratio of 60% or more after immersion at room temperature for 5 minutes at a concentration of caustic soda of 6%, particularly preferably an ether-based polyamino group. Ethyl formate fiber. If the strength retention of the polyurethane after the caustic soaking is less than 60%, the stress required for the etched portion may not be obtained.

Moreover, the cloth used in the present invention is preferably 30 to 55% of the cationic dyeable polyester fiber, 25 to 55% of the non-corroding inelastic fiber, and 10 to 30% of the elastic fiber before the etching treatment. The ratio consists of. If the cationic dyeable polyester fiber is less than 45%, the stress necessary for the non-etching portion may not be obtained, and if it is more than 55%, the stress difference between the etched portion and the non-etched portion becomes large, and the feeling of fear and wear is felt.

Further, if the ratio of the non-elastic fiber fibers which are not etched is less than 25%, the necessary breaking strength may not be obtained, and if it is more than 55%, the damage and stretchability may be obtained.

Further, if the ratio of the elastic fibers is less than 10%, the necessary stress may not be obtained. If it exceeds 45%, the fastness of the washing fastness or the like may not be ensured during the dyeing process.

Further, the strength coefficient of the non-corroded inelastic fiber must be 170,000 or more, and if the strength coefficient is less than 170,000, the breaking strength of the etched portion may not be sufficiently obtained.

Further, the breaking strength of the etched portion is preferably 200 KPa or more.

The elastic fiber used in the present invention and the two or more kinds of inelastic fibers may be used in a respective wire shape such as individual, blended, mixed fiber, combined, crosslinked, or woven. The fiberiness of the yarn is not particularly limited.

The form of the cloth may, for example, be a knitted fabric or a woven fabric, but is not particularly limited.

The fabric obtained by the above-described constitution is subjected to a etch treatment to obtain a fabric formed by the etched portion and the non-etched portion. The etched parts are mainly composed of elastic fibers and non-corroding inelastic fibers, and the non-corroded parts are composed of elastic fibers, corroded inelastic fibers and non-corroded inelastic fibers. However, even in the etched portion, a part of the erosive inelastic fiber can be left by weakening the processing conditions of the etched.

The etch-etching treatment is performed by etching the cationic dyeable polyester fiber of the erosive non-elastic fiber, and imparting a suitable etchant for the fabric without eroding other constituent fibers.

The etch-off processing agent may, for example, be a guanidine weak acid salt, a phenol, an alcohol, an alkali metal hydroxide or an alkaline earth metal hydroxide which is a conventional etching treatment agent. The concentration of the etching agent can be appropriately determined. Further, a fourth-order ammonium salt can also be used as the etch aid. After the etching treatment agent is applied to the cloth, the steaming treatment is carried out in a heating steam at 80 to 170 ° C for 1 to 30 minutes, and the non-elastic fibers which should be etched can be etched out without any influence on other components.

For the method of imparting the etching agent to the cloth, at least one selected from the group consisting of a dipping method, a rolling method, a rolling method, an inkjet printing method, a padding method, a dyeing method, a spray method, and the like may be used. The liquid containing the etching agent may be uniformly imparted to the portion not intended to be etched, and is not particularly limited.

In the present invention, it is preferred to apply the ultraviolet absorbing agent to the inside of the fiber to be used, and further to process the stretchable cloth having the etched portion and the non-etched portion.

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

Further, it is preferred to impart a benzotriazole-based ultraviolet absorber containing chlorine to the structure in the post-processing. The benzotriazole-based ultraviolet absorber containing chlorine in the structure may, for example, be 2-(2'-hydroxy-3'-t-butyl-5'-methylphenyl)-5-chlorobenzotriazole. , 2-(2'-hydroxy-3',5'-di-t-butylphenyl)-5-chlorobenzotriazole, and the like. Since the chlorine-containing benzotriazole-based ultraviolet absorber is ionically bonded to the amino terminal group in the polyurethane fiber, embrittlement due to ultraviolet rays can be effectively suppressed. When it is used for an ultraviolet absorber other than the benzotriazole-based ultraviolet absorber containing chlorine in the structure, the embrittlement of the polyurethane fiber due to ultraviolet rays may not be sufficiently suppressed.

The above-mentioned benzotriazole-based ultraviolet absorber can be obtained in any step after the cloth is obtained. However, in the case of dyeing the cloth, it is preferred to impart a benzotriazole-based ultraviolet absorber together with the dye. In this case, the benzotriazole-based ultraviolet absorber is preferably added 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 cloth. When the amount of the benzotriazole-based ultraviolet absorber is less than 0.1% by weight, the embrittlement of the polyurethane fiber due to ultraviolet rays cannot be prevented. Further, when the amount of the benzotriazole-based ultraviolet absorber is more than 20.0% by weight, the high stretchability of the polyurethane fiber is liable to be impeded, or even if the fabric is dyed, it is difficult to develop a clear hue.

As described above, it is preferred to apply the organic ultraviolet absorber twice before spinning and after the cloth is formed.

After the benzotriazole-based ultraviolet absorber is applied to the above-mentioned cloth, heat treatment is performed. By performing heat treatment, the benzotriazole-based ultraviolet absorber is adsorbed by the polyurethane fiber. This heat treatment is carried out after the dyeing process in the usual processing and stability step. The heat treatment conditions are preferably carried out at a temperature of 100 ° C or higher for a period of several seconds to several minutes.

The stress retention rate after 40 hours of irradiation of the carbon arc lamp in the etched portion of the stretchable cloth of the present invention is preferably 90% or more before the irradiation of the carbon arc lamp. If the stress retention rate is less than 90%, the etched portion may be damaged when worn, or the stretchability may be lowered.

Further, the stress at 30% elongation of the etched portion is preferably 20 to 85% of the stress at 30% elongation of the non-etched portion. If the stress ratio is less than 20%, it is difficult to obtain a feeling of tightness, and the recovery after stretching may not be sufficient, and the effects of improvement in motor function and body shape correction may not be obtained.

If the stress ratio is more than 85%, it is difficult to obtain the stress difference between the etched portion and the non-etched portion, and it is difficult to obtain the functional effect of the purpose.

Further, the breaking strength of the elastic fiber of the etched portion is 90% or more of the breaking strength of the elastic fiber of the non-etched portion. If the breaking strength ratio is less than 90%, the etched portion may be broken when worn, or the stretchability may be lowered.

These characteristics can be easily achieved by the combination of the non-treated cloth described above and the etch treatment and the ultraviolet absorber.

In the stretchable fabric of the present invention, a pattern, a color, and the like may be imparted to any of the etched portion and the non-etched portion.

Example

Hereinafter, the present invention will be specifically described by way of examples and comparative examples of the present invention, but the present invention is not limited by the following examples. In addition, "%" in the examples and comparative examples means "% by weight".

Further, the measurement method of the characteristic value in the examples is shown below. Either of them was measured at 20 ° C and 65% RH unless otherwise stated.

(The stress ratio of the etched part to the non-etched part) was prepared using Autograph (manufactured by Shimadzu Corporation) to prepare a sample with a width of 25 mm, a tensile length of 100 mm, and a chuck for a length of 100 mm, and extended to 180 mm at a speed of 300 mm/min. After (80% elongation), the load was removed and returned to the initial setting of 100 mm. This operation was repeated three times, and the load (30% elongation force) at 30% elongation was read from the third SS curve as a stress value. The stress value of the non-etched portion is taken as S ₀ , and the stress value of the etched portion is calculated as S ₁ from the following formula 1.

Stress ratio (%) = S ₁ ÷S ₀ × 100 (1)

(The breaking strength ratio of the elastic fiber of the etched portion to the elastic fiber of the non-corroded portion) is prepared by using Autograph (manufactured by Shimadzu Corporation) at 20 ° C and 65% RH, and the length of the chuck is 100 mm. The elastic fiber of 100 mm was elongated at a rate of 300 mm/min, broken, and the strength at the time of breaking was measured. The strength at the time of breaking of the elastic fiber taken from the material of the non-etching portion is taken as A ₀ , and the strength at the time of breaking of the elastic fiber taken from the material of the etched portion is taken as A ₁ . The breaking strength ratio was calculated according to the following formula 2.

Breaking strength ratio (%)=A ₁ ÷A ₀ ×100 (2)

The ultraviolet irradiation of the cloth was carried out by a carbon arc lamp method (63 ° C) in accordance with JIS L0842-1988. The irradiation was carried out for 40 hours using an ultraviolet carbon arc lamp type light resistance tester. Second, the stress retention rate was evaluated in the following manner. A sample having a width of 25 mm, a tensile length of 100 mm, and a chuck length of 100 mm was prepared using Autograph (manufactured by Shimadzu Corporation), and the sample was extended to 180 mm (80% elongation) at a speed of 300 mm/min, and the load was returned to the initial setting. 100mm. This action was repeated three times, and the load (30% elongation stress) at 30% elongation was read from the third SS curve.

The third 30% elongation stress of the cloth of the etched portion before the light resistance test is performed as the untreated value T ₀ , and the third 30% elongation stress of the cloth of the etched portion after the light resistance test is performed is used as T ₁ , the stress retention ratio is calculated as in the following formula 3.

Stress retention rate (%) = T ₁ ÷T ₀ × 100 (3)

(Alkaline resistance evaluation test of polyurethane fiber) The polyurethane fiber used is immersed in a 6% concentration of caustic soda at a normal temperature, and is naturally dried, and the polyurethane fiber is elongated. The state of 50% was heat-treated at 160 ° C for 10 minutes, and then washed with hot water of 40 ° C and then naturally dried. Thereafter, the tensile strength at break was measured at an angle of n=5 by Autograph (a tensile strength tester manufactured by Shimadzu Corporation). The breaking strength ratio to the untreated polyurethane fiber was calculated.

(Intensity coefficient of non-corroded inelastic fiber fiber) Strength coefficient = (denier (dtex) × monofilament strength (CN / dtex) × density per unit area (thickness × well beam or longitudinal density × horizontal density) × The mixing rate of the non-corroded inelastic fibers before the etched portion is etched.

The monofilament strength system Ny is 5CN/dtex, and the PET system is calculated at 6CN/dtex.

[Example 1]

It is made of nylon 6 fiber (made from Toray Co., Ltd., 33dtex/26f), and cationic dyeable polyester fiber (Mitsubishi 嫘萦, 56dtex/36f) and ether condensate. The warp-knitted satin weave composed of urethane fiber (made by Toyobo Co., Ltd., Espa Tester T-71, and monofilament fiber 44 dtex alkali resistance test), using nylon fiber 40.0% by weight, often A composite fabric (thickness: 1 mm) composed of 40.0% by weight of a cationically-dyeable polyester fiber and 20.0% by weight of a polyurethane fiber.

The treatment liquid composed of the following Formula 1 containing the fourth-order ammonium salt was printed on a stripe on the surface of the fabric by a screen printing machine, and then subjected to steaming treatment at a temperature of 110 ° C for 15 minutes. The fourth grade ammonium salt contained in the mash paste is absorbed by the cloth. Thereafter, the mixture was washed with water at 30 ° C for 10 minutes, and further heat-washed at 60 ° C for 10 minutes to completely remove the mash paste adhering to the surface of the fiber cloth sheet and the remaining fourth-order ammonium salt. Then, in the etching treatment, the mixture was immersed in a sodium hydroxide aqueous solution having a temperature of 90 ° C and a concentration of 1.2% by weight for 30 minutes, and then stirred and then taken out to completely remove the adhered sodium hydroxide. The warm water of °C was washed 3 times in 5 minutes. Thereafter, it was dried at 130 ° C for 2 minutes in a dryer.

[Formula 1] Laccol CT-2000 20% (Mingcheng Chemical Industry Co., Ltd., grade 4 ammonium salt) Fujichemie HEC BL30 40% (Fuji Chemical Co., Ltd., hydroxyethyl cellulose) water 40%

Thereafter, it was made into an aqueous solution of 2-(2-hydroxy-3,5-di-t-butylphenyl)-5-chloro-benzotriazole 20.0% owf as an ultraviolet absorber and 1.0 cc/liter of acetic acid. The above cloth was immersed at 100 ° C for 30 minutes, and the evaluation results are shown in Table 1.

[Embodiment 2]

In the fabric used in the first embodiment, the treatment liquid composed of the following formulation 2 was placed in a padding method in a manner of 2 g/m ^{2 in} the form of a solid film, and dried at 170 ° C for 2 minutes. Ink receiving layer.

[Formulation 2] DKS Fine Rubber HEL-1 2% (First Industrial Pharmaceutical Co., Ltd., etherified carboxymethylcellulose) MS solution 5% (Mingcheng Chemical Industry Co., Ltd., nitrobenzenesulfonate, Anti-reducing agent, active ingredient 30%) water 93%

Then, the etch-off ink of the following Formula 3 was printed in a stripe shape using a manual (On Demand) series scanning type ink jet printing apparatus in the cloth forming the ink receiving layer.

[Formulation 3] Barium carbonate (fiber decomposer) 20% urea (dissolving stabilizer) 5% diethylene glycol (drying inhibitor) 5% water 70%

Further, after drying the cloth, it was heat-treated at 160 ° C for 20 minutes using a HT steamer. Further, the mixture was washed at 50 ° C for 10 minutes in an adsorption bath containing 2 g / liter of Tripol TK (manufactured by Daiichi Takumi Co., Ltd., nonionic surfactant), washed with water, and dried. A corroded workpiece is obtained.

Thereafter, it was made into an aqueous solution of 2-(2-hydroxy-3,5-di-t-butylphenyl)-5-chloro-benzotriazole 20.0% owf as an ultraviolet absorber and 1.0 cc/liter of acetic acid. The above cloth was immersed at 100 ° C for 30 minutes, and the evaluation results are shown in Table 1.

[Example 3]

It is made of a general polyester fiber (made from Toray Co., Ltd., 33dtex/26f), a cationic dyeable polyester fiber (manufactured by Mitsubishi Rayon Co., Ltd., 33dtex/36f), and an ether-based polycondensation. A warp-knitted warp-knitted structure composed of urethane fibers (manufactured by Toyobo Co., Ltd., Espa Tester T-71, and a monofilament fiber degree 44 dtex alkali resistance test) was used in an amount of 43.0% by weight of a general polyester fiber. A composite fabric (thickness: 1 mm) composed of 43.0% by weight of a normal-pressure cationic dyeable polyester fiber and 14.0% by weight of a polyurethane fiber was processed under the same conditions as in Example 1. The evaluation results are shown in Table 1.

[Comparative Example 1]

Cationic dyeable polyester fiber (manufactured by Toray Co., Ltd., 33dtex/26f), and atmospheric pressure dyeable type (manufactured by Mitsubishi Rayon Co., Ltd., 56dtex/36f), and ether/ester A warp-knitted warp-knitted structure composed of elastic yarn (Lekuse made by Teijin and 40 dtex alkali resistance retention rate), using nylon fiber 40.0% by weight, atmospheric pressure cationic dyeable polyester A composite fabric (thickness: 1 mm) composed of 40.0% by weight of fibers and 20.0% by weight of polyurethane fibers.

The treatment liquid composed of the formulation 1 containing the fourth-order ammonium salt was printed on a surface of the fabric by a screen printing machine in a stripe shape, and dried at a temperature of 110 ° C for 2 minutes. Thereafter, the mixture was subjected to a steam heat treatment at a temperature of 110 ° C for 15 minutes to absorb the fourth-order ammonium salt contained in the mash paste. Thereafter, the mixture was washed with water at 30 ° C for 10 minutes, and further heat-washed at 60 ° C for 10 minutes to completely remove the mash paste adhering to the surface of the fiber cloth sheet and the remaining fourth-order ammonium salt. Then, in the etching treatment, the mixture was immersed in a sodium hydroxide aqueous solution having a temperature of 90 ° C and a concentration of 1.2% by weight for 30 minutes, and then stirred and then taken out to completely remove the adhered sodium hydroxide. The warm water of °C was washed 3 times in 5 minutes. Thereafter, it was dried at 130 ° C for 2 minutes in a dryer.

Thereafter, 2-(2-hydroxy-3,5-di-t-butylphenyl)-5-chloro-benzotriazole 20.0% owf as a UV absorber containing chlorine, 1.0 cc/liter of acetic acid The cloth was immersed in an aqueous solution at 100 ° C for 30 minutes, and the evaluation results are shown in Table 2.

[Comparative Example 2]

It is made of nylon 6 fiber (made from Toray Co., Ltd., 33dtex/26f), and cationic dyeable polyester fiber (Mitsubishi 嫘萦, 56dtex/36f) and ether condensate. The warp-knitted satin weave composed of urethane fiber (made by Toyobo Co., Ltd., Espa Tester T-71, and monofilament fiber 44 dtex alkali resistance test), using 20.0% by weight of nylon fiber, often A composite fabric (thickness: 1 mm) composed of 60.0% by weight of a cationically dyeable polyester fiber and 20.0% by weight of a polyurethane fiber.

The treatment liquid composed of the formula 1 containing the fourth-order ammonium salt was printed on the surface of the fabric by a screen printing machine, and then subjected to steaming treatment at a temperature of 110 ° C for 15 minutes to make a paste. The fourth grade ammonium salt contained is absorbed by the cloth. Thereafter, the mixture was washed with water at 30 ° C for 10 minutes, and further heat-washed at 60 ° C for 10 minutes to completely remove the mash paste adhering to the surface of the fiber cloth sheet and the remaining fourth-order ammonium salt. Then, in the etching treatment, the mixture was immersed in a sodium hydroxide aqueous solution having a temperature of 90 ° C and a concentration of 1.2% by weight for 30 minutes, and then stirred and then taken out to completely remove the adhered sodium hydroxide. The warm water of °C was washed 3 times in 5 minutes. Thereafter, it was dried at 130 ° C for 2 minutes in a dryer.

Thereafter, it was made into an aqueous solution of 2-(2-hydroxy-3,5-di-t-butylphenyl)-5-chloro-benzotriazole 20.0% owf as an ultraviolet absorber and 1.0 cc/liter of acetic acid. The above cloth was immersed at 100 ° C for 30 minutes, and the evaluation results are shown in Table 2.

[Comparative Example 3]

It is made of nylon 6 fiber (made from Toray Co., Ltd., 33dtex/26f), and cationic dyeable polyester fiber (Mitsubishi 嫘萦, 56dtex/36f) and ether condensate. The warp-knitted satin weave composed of urethane fiber (made by Toyobo Co., Ltd., Espa Tester T-71, and monofilament fiber degree 44 dtex alkali resistance retention rate) was 30.0% by weight of nylon fiber. In a composite fabric (thickness: 1 mm) composed of a normal pressure cationic dyeable polyester fiber of 45.0% by weight and a polyurethane fiber of 25.0% by weight, padding is performed in a manner of 2 g/m ² in terms of a solid film. The treatment liquid composed of the formulation 2 was applied and dried at 170 ° C for 2 minutes to form an ink receiving layer.

Then, the etch-off ink of the following Formula 3 was printed in a stripe shape using a manual (On Demand) series scanning type ink jet printing apparatus in the cloth forming the ink receiving layer.

Further, after drying the cloth, it was heat-treated at 160 ° C for 20 minutes using a HT steamer. Further, the mixture was washed at 50 ° C for 10 minutes in an adsorption bath containing 2 g / liter of Tripol TK (manufactured by Daiichi Takumi Co., Ltd., nonionic surfactant), washed with water, and dried. A corroded workpiece is obtained.

Thereafter, it was made into an aqueous solution of 2-(2-hydroxy-3,5-di-t-butylphenyl)-5-chloro-benzotriazole 20.0% owf as an ultraviolet absorber and 1.0 cc/liter of acetic acid. The above cloth was immersed at 100 ° C for 30 minutes, and the evaluation results are shown in Table 2.

Industrial use possibility

The stretchable fabric of the present invention is excellent in air permeability or durability, and is suitable for use as a garment for sports or indoors, etc., without impairing texture or wearing feeling.

Claims (7)

A stretchable fabric characterized by: a corroded inelastic fiber, a non-corrosive inelastic fiber, and an elastic fiber, and having a etched portion and a non-etched portion, wherein the etched inelastic fiber is It is composed of a cationic dyeable polyester fiber, the elastic fiber is composed of an alkali-resistant polyurethane fiber, and the strength coefficient (denier (dtex) × monofilament strength (CN) of the non-corroded inelastic fiber /dtex) × density per unit area (thickness × well beam or longitudinal density × lateral density) × mixing ratio of non-corroding inelastic fibers before etched by the etched portion) is 170,000 or more, and the aforementioned alkali-resistant polymerization The urethane fiber is an alkali-resistant polyurethane fiber having a strength retention rate of 60% or more after immersion for 5 minutes at normal temperature in a 6% strength aqueous solution of caustic soda. The stretchable fabric of the first aspect of the patent application, wherein the ratio of the constituent fibers before the etch treatment is 30 to 55% of the cationic dyeable polyester fiber, and the non-corrosive inelastic fiber is 25 to 55. %, the aforementioned polyurethane fiber is 10 to 45%. The stretchable fabric of claim 1, wherein the etched portion has a breaking strength of 200 KPa or more. The stretchable fabric of claim 1, wherein the non-corrosive inelastic fibers are Nylon fibers, and the elastic fibers are ether-based polyurethane fibers. Such as the patented scope of item 1 of the stretch fabric, which Give UV absorbers. The stretchable fabric of claim 5, wherein the ultraviolet ray absorbing agent is imparted by processing after the benzotriazole-based ultraviolet ray absorbing agent containing chlorine in the structure. The stretchable fabric of claim 1, wherein the stress retention rate of the etched portion after the irradiation of the carbon arc light for 40 hours is 90% or more, and the stress at the elongation of the etched portion is 30%. The stress at 30% elongation of the etched portion is 20 to 85%, and the breaking strength of the elastic fiber in the etched portion is 90% or more of the breaking strength of the elastic fiber in the non-etched portion.