KR100298000B1 - Processing method of indigo jeans - Google Patents

Abstract

PURPOSE: A finishing method of indigo jeans is provided which is characterized by reducing contamination of a ground generated by migration of dyes, not turning a ground color, developing a final indigo color clearly, and preventing change of the color in time to wash by increasing frictional resistance. CONSTITUTION: The finishing method is comprised of the steps of: a first process of padding the indigo jeans textile into aqueous solution added desizing agent, followed by washing and dewatering; a second process of tumbling the desized jeans textile with resin solution with dissolved 1-3wt.% of catalyst and 3-10wt.% of at least one resin selected from the group containing melamine resin, urea resin, glyoxal resin and polyurethane resin for 2-5min.; a third process of taking out the jeans textile from aqueous solution, followed by dewatering, drying and curing; a fourth process of biostone-washing the jeans textile into 40-60deg.C of aqueous solution with dissolved 2%o.w.f. of bio-enzyme for 60-90min.; and then a fifth process of dewatering and washing.

Description

Processing method of indigo jeans

The present invention relates to a processing method of Indigo jeans, and more particularly, to a method of physically chemically processing a garment product or its fabric so that the Indigo jeans garments wear long and have an old feeling.

In the case of blue jeans such as jeans, the fabrics or clothing products are processed to give a feeling of worn out for long periods of time. Generally, the method is called the process of tumbling jeans fabrics or clothing by tumbling and bio stone washing. It is made by the process.

Specifically, it is as follows.

First, the jeans are tumbling at a temperature of about 60 ° C. in an aqueous solution in which the hair blowing agent is added and dissolved at about 2 g / L. Next, bioenzyme was added in 1% o.w.f. That is, the jeans washed with an aqueous solution of about 55 ° C. to which bioenzyme is added to 1% of the jeans weight are washed with water, and washed three times using hot and cold water.

However, according to this method, the discoloration (dye loss) is well achieved by the surface friction effect, but the dyes removed from the jeans when tumbling in the descaling process contaminate the jeans base again in the biostone washing process, and the color is changed. The process color was also difficult because the degree of fading of the background color changed with the washing time. In addition, in the biostone washing process, the parts peeled off by the stone friction and the inside of the pants, the pockets and the label, etc., are contaminated with blue by the dyeing dye, and the color of the ridge bone is also discolored. In addition, even when washing by the consumer according to the use of the product, the water continues to fall out of color fade, and also has a problem that the resistance to chlorine bleach is very weak.

On the other hand, the unique indigo color can solve the above problems when washed with sufficient water, for example, if the biostone washing in running water, but practically this processing is almost impossible considering the environmental pollution problem and water supply side It is impossible.

Accordingly, an object of the present invention is to prevent re-contamination of dyes that fall off when rubbing the indigo jeans in a constant amount of water again in fabric or clothing, and to sharpen the final indigo color to reproduce the quality and natural color. At the same time, it improves the frictional resistance and prevents the color from being thinned by washing by friction when worn, and prevents discoloration and improves the resistance to chlorine bleach. have.

Indigo gin processing method for achieving the object of the present invention, the first step of taking out the indigo gin fabric padded in an aqueous solution added to the hair removal agent, washed with water and dehydrated; A second step of tumbling the called jean fabric in an aqueous resin solution in which at least one resin selected from the group consisting of melamine resin, urea resin, glyoxal resin and polyurethane resin and a catalyst are dissolved; A third step of removing the original fabric from the aqueous resin solution and dewatering, drying and curing; A fourth step of washing the raw fabric which has undergone the third step in a 60-90 minute biostone wash in an aqueous solution of 40-60 ° C. in which a bioenzyme (cellulase) is dissolved in an amount of 2% o.w.f .; And, it is characterized in that it comprises a fifth step of final bleaching and washing the jin fabric through the fourth step.

Hereinafter, the processing method of the indigo jeans according to the present invention will be described in more detail for each process.

Call process

First, the indigo jeans fabrics or clothing products are padded for 50 to 70 minutes in an aqueous solution of about 10 g of the hair blowing agent per 1 liter of water. At this time, the temperature of the aqueous solution is maintained at 50 ~ 60 ℃. In this process, the hairs on the surface of the fabric or clothing product occurs and some dyes drop out, but the dye is removed by padding, so there is less dye dropout. Therefore, there is almost no contamination of the background color of the fabric by the eliminated dye.

Thereafter, the woven fabric (or the garment) is taken out of the aqueous solution in which the hair blowing agent is dissolved, and the washing and dehydration are performed. Water washing and dehydration are to proceed to facilitate the penetration of the resin into the original fabric in the following process.

Resin processing process

Resin processing dissolves one or more resins and catalysts selected from melamine resin, urea resin, glyoxal resin, polyurethane resin, etc. in water in amounts of 3-10 wt% and 1-3 wt%, respectively, and then tumbles the fabric using the same. It is a process.

At this time, the resin and the aqueous solution to which the catalyst is added are alkaline because the resin is alkaline and the catalyst is a strong acid. In addition, the amount of resin is changed depending on the thickness of the fabric, the thicker the thickness of the fabric is preferably less resin addition.

In this process, tumbling is carried out for 2 to 3 minutes with as little liquid as possible. The reason for this is that, although it varies slightly depending on the drying conditions and the concentration of the chemical, the pick-up rate of the resin reaches 65-85%, and by reducing the tumbling time, the recontamination of the dropped dye can be prevented as much as possible.

In the resin processing, a conventional water repellent agent (W / R), antifouling agent (S / R) or the like may be added and used depending on the state of the fabric and the desired processing purpose.

Subsequently, the original fabric is taken out from the aqueous resin solution, dehydrated and tumbling dried about 95% of the moisture content at a temperature of 120 ° C. or lower, and optionally steamed to remove fine wrinkles generated during the process. Removing fine wrinkles by steam ironing is preferable since it is possible to prevent the dyes of the fine wrinkles from being removed in the stone washing process over a wide range.

Next, using a predetermined chamber is left for about 5 to 10 minutes at about 150 ℃ to proceed with curing. Curing may vary slightly depending on the conditions of the fabric, the mechanical conditions (moving speed), the concentration of the resin, etc., but it is better to use the one that does not have a difference in temperature inside and outside the chamber.

In the curing process, crosslinking occurs between the fabric and the resin infiltrated into the fabric to improve the frictional resistance of the surface, and to prevent the contamination of dyes during washing and to prevent the dye from falling off during washing. do.

Bio Stone Washing Process

Next, stone washing is performed for 60 to 90 minutes in an aqueous solution in which bioenzyme (based on Denimax 991L) is dissolved at about 2% (o.w.f.). The temperature of the aqueous solution is maintained at 40 ~ 60 ℃, this temperature may vary depending on the degree of strength of the fabric. In this process, the fabric has a part where the dye is completely peeled off by friction.

Final flush process

Then, finally, three times of decolorization and washing are performed. First, water is washed over 10 to 20 minutes with water of about 60 ° C. in which sodium hypochlorite is dissolved at about 20 to 50 g / l. Sodium hypochlorite reacts with the resin penetrated to the jin fabric during the first washing, and decolorizes only the part peeled off from the stone washing process to give an ivory tone color.

Subsequently, the second washing with water of about 60 ° C. in which hydrogen peroxide and caustic soda were dissolved at about 5 g / l and 0.5 g / l, respectively, was carried out for 10 minutes, and then at room temperature using water in which glacial acetic acid was dissolved at about 0.5 g / l. Wash your car. Here, hydrogen peroxide and caustic soda act to bleach the fabric and neutralize sodium hypochlorite.

In this way, decolorization proceeds to have an old feeling from the jean fabric, and finally, after treating the silicone-based or fatty acid-based softener to steam drying at 140 ℃ can obtain the desired gin product in the present invention.

As described in detail above, the processing method of the indigo jeans according to the present invention is less likely to cause the contamination of the ground color because less dye dropout occurs in the initiation process and the resin penetrates into the fabric at the same time as the dye dropout occurs in the short resin process. In addition, since the crosslinking of the fabric and the resin occurs by curing, the background color change hardly occurs in the subsequent washing process, and during the final washing, the discoloration and ivory color are removed for the part where the dye is completely peeled off using chemicals. As a result, the overall indigo color is natural and free of pollution. In addition, when processing jeans garment products directly, there is little contamination due to the dropped dyes, so there is almost no color change on the back of the garments, bags, and labels. It will not change.

Claims (4)

A first step of padding the indigo jeans fabric in an aqueous solution to which a hair blowing agent is added, taking out the water, and washing and dehydrating; A second step of tumbling the called jean fabric for 2 to 5 minutes using at least one resin selected from the group consisting of melamine resin, urea resin, glyoxal resin and polyurethane resin and a resin solution in which a catalyst is dissolved; A third step of removing the original fabric from the aqueous resin solution and dewatering, drying and curing; A fourth step of washing the raw fabrics subjected to the third step with biostone water for 60 to 90 minutes in an aqueous solution of 40 to 60 ° C. in which bioenzyme is dissolved in an amount of 2% o.w.f .; And a fifth step of finally bleaching and washing the jean fabric which has undergone the fourth step. The method of claim 1, In the second step, the aqueous resin solution is an indigo gin processing method, characterized in that the resin and the catalyst are dissolved in an amount of 3 ~ 10wt% and 1 ~ 3wt%, respectively. The method of claim 1, In the fifth step, the final water washing is first washed with 60 ° C. water added with 20 to 50 g / l of sodium hypochlorite for 10 to 20 minutes, and then hydrogen peroxide and caustic soda are added to 5 g / l and 0.5 g / l, respectively. Indigo gin processing method characterized in that the second washing with water at 60 ℃ water for 10 minutes, and the third washing with water at room temperature to which glacial acetic acid is added at 0.5 g / l again. The method of claim 1, And an ironing step of removing the fine wrinkles between the third step and the fourth step.