KR0173530B1 - Method for manufacturing suede woven fabric - Google Patents

Abstract

The present invention is a method of producing a suede tissue of excellent texture and showing a natural texture.

The present invention is a method of manufacturing by weaving the surface of high-elastic yarn, such as spandex yarn with a natural fiber spun yarn as a weft yarn, then dimensional stabilization treatment and raising, impregnated in a polyurethane resin and tentered.

The suede tissue produced by the present invention expresses the natural texture by the raised part of the natural fiber formed while having excellent elasticity by high elastic yarn.

Description

Manufacturing method of suede-like fabric of natural texture superior in elasticity

The present invention relates to a method for producing a suede-like brushed fabric having excellent elasticity and natural texture by applying a surface of a stretchable fabric and then continuously treating the water-based polyurethane resin.

Until now, suede-like fabrics are woven using a microfiber of 0.3 denier level, as described in Korean Patent Publication No. 94-3135, and then made into a needle and punched a nonwoven fabric instead of impregnating and impregnating polyurethane. It was prepared by impregnation, coagulation, and washing after washing with water. Such a conventional method not only has a flaw in which there is only partial elasticity due to a lack of elasticity and resilience, but also a flaw in which natural texture is not expressed.

The present invention has solved such a problem as a feature of the present invention is to coat the surface of high elastic yarn with excellent elasticity with natural fiber or synthetic fiber microfiber, then weaving the fabric with the coated yarn and then brushed and impregnated with polyurethane resin One point to express the texture of natural fibers with high elasticity, described in detail below.

The present invention uses a general polyester yarn for warp, or a biaxially blended yarn in which the polyester yarn and the high shrink polyester yarn are mixed.

In particular, the present invention uses a highly elastic coated yarn in which the surface of a high elastic yarn (Spandes, etc.) is coated with a natural fiber yarn or a synthetic fiber microfiber yarn as a weft yarn.

Weaving the fabric using the warp and weft, but weaving in a runner tissue, particularly preferably five runners so that it is easy to brush in the subsequent raising process.

The fabric is dewarped and refined with caustic soda at a concentration of 0.5-5% for 100-300 seconds in a 60 ° C-100 ° C refining bath.

When the temperature in the refining tank is less than 60 ℃, workability is low, manufacturing costs are also high, and if the temperature exceeds 100 ℃, elasticity is lowered, elasticity is reduced and the axial rate is severely generated, causing wrinkles of fabric due to over-axis. In addition, when the fabric is treated in less than 0.5% concentration of less than 100 seconds, complete refining is not performed. If the fabric is carried out in excess of 5% concentration for more than 300 seconds, the elastic modulus of the elastic yarn is remarkably lowered.

Subsequently, the fabric is heat treated at a temperature of 140 ° C. to 200 ° C. for 30 to 150 seconds to stabilize the shape of the fabric.

If it is less than 140 ℃ and less than 30 seconds, it is difficult to stabilize the form, and if it is over 200 ℃, it hardens and the elasticity is lowered. If the time exceeds 150 seconds, the elasticity problem occurs.

Next, the fabric is brushed by a conventional method, then treated with polyurethane resin and sent, then tentered at 120 to 140 ° C. for 40 to 120 seconds to complete the present invention.

If temperature is less than 120 ℃, shape stabilization is difficult. If it is over 140 ℃, wetness of surface is decreased. If time is less than 40 seconds, shape stability is difficult. If it exceeds 120 seconds, elastic recovery capacity is lowered.

Polyurethane resin used in the present invention is a thermally reactive water-soluble urethane resin as an isocyanate containing a blocking agent, the block isocyanate is protected by the active agent isocyanate with a blocking agent, the form is stabilized and protected in the normal state, but blocks during heat treatment The agent is removed to cause the active isocyanate group to harden and crosslink, thereby forming a water-resistant, solvent-resistant, three-dimensional network of urethane.

The high elastic yarn used in the present invention is polyurethane-based, spandex yarn of polyester elastic yarn, polyether ester high elastic yarn, polybutyl terephthalate fiber, stretch composite fiber, stretch processing or elastic yarn, and the stretch ratio is 200% to 500%. It is

If it is less than 200%, the stretching ratio after processing is significantly lowered, and the characteristics of the fabric are weakened. If it is more than 500%, manufacturing beauty increases and problems occur during weaving.

Moreover, the polyurethane resin used by this invention consists of diisocyanate of 500-10,000 molecular weights, and diol of a low molecular weight crosslinking system, and dimethyl form is melt | dissolved in amide as a linear form. In the present invention, the diol may be polyether glycol, polyester, glycol, polyester polyester, copolymer glycol, polycarbonate glycol, diisocyanate, and the like, but diisocyanate was used, and as a crosslinking agent, a porcelain having a molecular weight of 500 to less than 1,000 was used. Emulsified 4.4-butanediol and ethylene glycol are used. The above-mentioned elastomer solution is added to water together with an antioxidant, thickener, eye pigment, etc. to obtain an impregnation solution. It is preferable to make solid content 1 to 10% with respect to the fiber weight at the time of impregnation.

If it is less than 1%, the effect is reduced, and the value of the product is halved. If it exceeds 10%, the raised state of the raised part is unstable, and the value of the product is lowered in the aftermarket. Optimum conditions are 4% to 6%. The suede tissue manufactured by the present invention is composed of a high elastic yarn and a microporous polyurethane elastomer, so it has excellent elasticity and resilience, has excellent flexibility and drape, and has a surface effect of natural texture.

Example 1

Using a double-spun blended yarn 140d / 160fil interlaced between ordinary polyester yarn and high shrink yarn on the warp, it has a warp density of 165 bones / inch and a weaving yarn with a 30% spandex 30 monolithic covering covering 30 rayon. Weaving is done by 5 runners with 70 weft density per inch. After refining, the soda ash refining process was immersed in an immersion tank manufactured with a composition of 0.7%, and then 240 seconds were refined in a continuous refiner at 85 ° C. and subjected to dimensional stabilization treatment at 150 ° C. for 50 seconds before raising.

The brushed fabric was impregnated with a polyurethane resin impregnation solution, and then dried using a non-touch dryer to have a moisture content of 50% or less using a non-touch-dryer, and then evenly reshaped the hair. Solid content adhesion rate was set to about 0.05 mm of 5 weight% brushing length. In addition, a fabric was prepared by performing a tenter treatment for 40 seconds at 130 ° C. at the finishing width of the plane, and the results are shown in Table 1.

[Examples 2-5 and Fertilizer Examples 1-6]

In Example 1, the same results were obtained except that the elastic modulus, the refining conditions, the shape stabilization conditions, the tenting conditions, and the solid content adhesion ratio of the high elastic yarn were changed.

Claims (5)

The warp yarn is made of general polyester yarn, and the weft yarn is made by using the surface of high elastic yarn coated with natural fiber spun yarn, followed by refining treatment, shape stabilization treatment, brushed, impregnated in polyurethane resin solution, and tentering treatment. Manufacturing method of suede-like fabric of natural texture with excellent elasticity The method of manufacturing a suede-like fabric of excellent natural elasticity according to claim 1, wherein the elasticity of the high elastic yarn is 200 to 500%. The method according to claim 1, wherein the shape stabilization treatment is carried out for 30 to 150 seconds at a temperature of 140 ~ 200 ℃. The method of producing a natural textured sway-like fabric according to claim 1, wherein the solid resin of the polyurethane resin adheres to 1 to 10% by weight of the fiber when impregnated with the polyurethane resin solution. The method of claim 1, wherein the refining process uses a caustic soda at a concentration of 0.5 to 5% for 100 to 300 seconds at a temperature of 60 to 100 ° C.