JPS63243389A - Production of discharge style sewn product - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] Industrial applications The present invention relates to a method for manufacturing discharge-printed sewn products.

Conventional technology Clothing made from dyed yarn with a white outer layer, such as indigo blue denim, is worn or washed repeatedly, causing the dye to fall off in worn areas, especially in puckered seams and uneven areas. As a result, the middle white part is exposed, and uneven discoloration due to wear and fading, so-called "hit", occurs.

The faded look and worn-out windows brought about by this atari have been accepted by consumers, mainly young people, as a fresh fashion sense, and this type of clothing has become so popular that it has become a genre of fashion. Nowadays, in order to give a new product the appearance of fading and worn windows due to wear and fading, it is common practice to stone wash the product after sewing. however,
The wear and fading unevenness caused by stonewashing is extremely unsatisfactory (particularly in the case of sewn products dyed with sulfur dyes or reactive dyes), and attempts to obtain sufficient fading unevenness result in strength deterioration due to abrasion. Therefore, there is a need for a technology that does not cause strength deterioration and further emphasizes the hit.

In order to meet these demands, a method of stonewashing in the presence of a bleaching agent such as sodium hypochlorite has been proposed, but in this case, bleaching is carried out to the back layer of the fabric. The disadvantage is that the rate of decrease in strength of the fabric is quite high (approximately 40% or more).

On the other hand, conventional hit of this kind is exclusively related to the combination of the ground color of the fabric (for example, blue, brown, etc.) and the white color of the thread core of the material, and is not related to the combination of the ground color and a color other than white. No sewn products have been obtained in which this phenomenon occurs. Most of the conventional dyeing methods for sewn products, except for special tie-dyeing, involve uniform dyeing, and the technology for dyeing sewn products in irregular areas while maintaining sufficient fabric strength has not been established. The development of this type of staining technology is also required in this field.

Problems to be Solved by the Invention The present invention satisfies the above-mentioned needs by creating a clear discharge printing unevenness of white or other colors over the entire shallow layer of the sewn product, thereby emphasizing the hit and not reducing strength. This was done to provide discharge-printed sewn products.

A means for solving the problem, that is, the present invention is characterized in that a discharge printing agent, a sizing agent, or a discharge printing agent, a sizing agent, and an abrasive stone to which a dye that is resistant to the discharge printing agent is attached are brought into contact with the sewn product in a washing machine. This invention relates to a method for producing discharge-printed sewn products.

Examples of the discharge printing agent used in the present invention include potassium permanganate, sodium hypochlorite, a mixture of hydrosulfide and sodium hydroxide, etc.
The dye may be appropriately selected and used depending on the type of dye used for dyeing the sewn product, the material of the sewn product, etc.

The optimal concentration of the discharge dye to be used depends on the type of discharge dye and the type of sewn product to be treated, etc., and is not particularly limited, but in general, potassium permanganate 20 VI! or more, preferably 50
~100Vl! , hydrosulfide 5f/1 or more, preferably mo-50f//1.

If the concentration is too low, it is difficult to obtain the desired discharge printing effect.

The amount of the aqueous discharge printing agent solution used may be sufficient to moisten the polishing stone.

Examples of the sizing agent used in the present invention include mineral sizing agents such as talc, china clay, kaolin, clay, talc loose sand, and white pigment, and if desired, two or more of these may be used as a mixture.

The amount of glue used is not particularly limited, but if it is too small, the intended purpose of the present invention cannot be achieved, and it is usually about 0.05 to 0.5, preferably 0.5 to 0.5 of the weight of the sewn product to be treated. 1-0.2
It is.

The dye used in the present invention is a dye that is resistant to the above-mentioned discharge printing agents, and may be appropriately selected depending on the type of discharge printing agent and the desired combination with the color of the fabric of the sewn product. For example, when a sewn product dyed with an indigo dye is discharge-printed using a mixture of hydrosulfide and sodium hydroxide, a threne dye is used.

The concentration of this type of dye used is also not particularly limited, but is usually about 1 to 100 f/l! It is.

Examples of the abrasive stone to which the above-mentioned discharge printing agent, paste agent, and dye are attached include various natural abrasive cloths, artificial abrasive cloths, and plastic abrasive cloths. Polishing stone material, shape, size,
The roughness and the like may be appropriately selected depending on the type of sewn product to be processed, the desired design of discharge unevenness, the type of washing machine, etc.

The amount of polishing stone used is usually greater than the weight of the sewn product to be treated, but is not limited thereto.

When discharging sewn products in white according to the present invention, a polishing stone to which the above-mentioned discharging agent and glue are attached is used, and when discharging colored products, a polishing stone to which the above-mentioned discharging agent, sizing agent and dye are attached is used. Use stones.

The method for attaching the discharge printing agent, glue, and dye to the polishing stone is as follows: 1) Put the polishing stone in a washing machine, add the aqueous solution of the discharge printing agent or the aqueous solution of the discharge printing agent and the dye, mix well for several minutes, and remove the excess aqueous solution. Drain.

After that, add a sizing agent such as talc and coat it while mixing well for several minutes. After immersing the polishing stone in an aqueous solution of a fit discharge printing agent or an aqueous solution of a discharge printing agent and dye, pull it out and apply a sizing agent such as talc to it. tii) a method of applying an aqueous solution of a discharge printing agent or a mixture of a discharge printing agent, an aqueous solution of a dye, and a sizing agent to the polishing stone; Examples include a method of applying it to a wet polishing stone, but method ti) is preferred.

The abrasive stone to which the discharging agent and the sizing agent or the discharging agent, the sizing agent, and the dye are attached is brought into dynamic contact with the sewn product to be processed while operating the device in the washing machine. In this case, it is effective to subject the sewn product to normal washing treatment in advance to remove processing agents such as finishing agents from the sewn product and to soften the fabric material.

Dehydration after washing is preferably 100% or less. More preferably 30% or less.

As the washing machine, any washing device that has been conventionally used for normal washing, stone washing, etc. of sewn products may be used. Suitable devices are rotary washers such as rotary drum washers, barrel sander type washers and rotary cylinder type washers.

As mentioned above, when a polishing stone with a discharge dye etc. attached and a pre-treated sewn product are placed in a washing machine and brought into dynamic contact with each other through movement such as rotation, the viscous material containing the discharge dye adhering to the surface of the polishing stone is removed. The material is transferred to the surface of the sewn product in irregular portions, and discharge printing is performed at the transferred portions. That is, when using a polishing stone to which a discharge printing agent and a sizing agent are attached, the ground color of the sewn product is destroyed and removed at the transfer section, and on the other hand, in addition to the discharge printing agent and sizing agent, the ground color of the sewn product is destroyed and removed. When a polishing stone coated with a durable dye is used, the dyeing is carried out at the transfer section at the same time as the background color of the sewn product is removed.

In this case, a larger amount of the viscous substance containing the discharge agent is transferred to the protruding parts, thick seams, wrinkled parts, etc. of the sewn product than to the flat parts, and the white discharge printing or colored discharge printing is performed relatively clearly. This, together with the comparatively weak discharge printing part of the flat part and the ground color of the sewn product, creates a pattern due to irregular partial discharge printing unevenness with a unique faded feeling.

Discharged sewn products are thoroughly washed with water and hot water.
After removing any glue or processing agent that remains on the fabric, it is dehydrated and dried.

Effects of the Invention According to the present invention, in addition to the type and concentration of the discharge printing agent and dye, the type and viscosity of the sizing agent, the shape and size of the polishing stone, and the dynamic contact between the sewing product and the polishing stone in the washing machine, By changing the time, the rotational speed of the washing machine, etc., a wide variety of distinct and irregular partial discharge printing uneven patterns are revealed, thereby producing a discharge-printed sewn product with emphasized hit.

Furthermore, the rate of decrease in strength of the fabric of the discharge-printed sewn product obtained in this manner is extremely small, so that it does not cause any practical problems.

Hereinafter, the present invention will be explained by examples.

Example 1 100% cotton rope dyed with indigo dye?
'S Indigo denim made from single yarn (500Vrr
e) By subjecting the sewn product (blue jeans) using the fabric to the following processing steps (1) to (8), discharge printing unevenness with sufficient whiteness is irregularly distributed over the entire surface layer of the product to be processed. A sewn product with visible appearance was obtained (strength reduction rate: 6%).

(1) Wash the sewn product 20KII in warm water (60°C) for 10 minutes (bath ratio 1:15), dehydrate and dry.

(2) Polishing stone (Material 2 artificial polishing stones, shape 2 spherical and triangular, size 2 spherical diameter 20mm, triangle - side 20III
I111 thickness 10I+! j+) to 100! 9 into the barrel washer.

(3) On top of this, permanganese perpotassium aqueous solution (50Fj
/l ) 2 I! After sprinkling and pouring the solution, run the barrel washer for about 2 minutes to thoroughly mix the polishing stone and the potassium permanganate aqueous solution, and then drain the excess potassium permanganate aqueous solution.

(4) Sprinkle 2 kg of talc evenly on the polishing stone from (3) above, and run the barrel washer for about 3 minutes to apply a sufficient amount of talc onto the polishing stone.

(5) The sewn product obtained in (1) above is placed in a barrel washer and treated for 10 minutes.

(6) Put 300j' of water into the barrel washer, wash with water for 5 minutes at room temperature, and then drain.

(7) Water 300/and acidic sodium sulfite o, sK! 9
was placed in a barrel washer and treated at 70°C for 5 minutes.

(8) Wash thoroughly with hot water and water.

Example 2 In place of the treatment step (3) of Example 1, a sodium hypochlorite aqueous solution (industrial available chlorine 13%) (750 f/l) was used instead of the potassium permanganate aqueous solution (50 Vl), and Instead of treatment step (7), put 3001 water and 0.5 sodium bisulfite into the barrel washer,
The same processing operations as in Example 1 were performed except that the treatment was carried out at 50°C for 5 minutes to obtain a sewn product with white discharge unevenness similar to the sewn product obtained in Example 1 (strength reduction rate 1O%). .

Example 3 Sulfur dye (Kamiyo Blue RDL 2%5o
7 was applied to blue denim 20 sewn from 100% cotton 30/2'S twill (300μ) fabric that was dyed blue in a continuous rack using lu (Chijigi Dye @)) as in Example 1. By subjecting it to similar treatment steps (1) to (8),
A sewn product was obtained in which discharging unevenness of sufficient whiteness appeared in irregular areas over the entire surface layer of the product (strength reduction rate: 9%).

Example 4 A reactive dye (RemazolYe) was used as a sewn product to be treated.
low G 2%, Sumifix Red B 2
% and Sumifix 5upra Blue BR
Cotton 1 that was dyed brown in a continuous rack using F 2% keratocontaining
00% 30/2's twill (300 Vrre) fabric was used in the same manner as in Example 1, except that brown denim 20mm was sewn with 30/2's twill (300 Vrre) fabric. A sewn product with visible appearance was obtained (strength reduction rate: 7%).

Example 5 A sewn product similar to the product used in Example 1 was subjected to the following processing step (
By subjecting to steps 1) to (8), a sewn product was obtained in which dyed areas of 8 shades of irregular spots caused by thren dye appeared over the entire surface layer of the product (strength reduction rate: 6%). .

(1) Sewn products? Wash OK7 normally for 10 minutes using warm water (60°C) (bath ratio 1:15), and dehydrate and dry.

(2) Polishing stone (Material: 2 artificial polishing stones, shape: 2 spherical and triangular, size: 2 spherical, diameter 20 mm, diagonal - 0 mm, thickness 1
Omm) Insert 9 into 100 into the barrel washer.

(3) Water 1.6/hydrosulfide 20f! , 20 g of caustic soda and thren dye (Nihonthre
nRed F2B 5. Of and N1honthre
Add water to a solution containing 5.0 g of Yel low 3GC) to make a total of 21. After putting this aqueous solution into the barrel washer and operating the device for 2 minutes,
Drain excess aqueous solution.

(4) Talc 2. OK9 Place the barrel into the washer and run the device for 3 minutes.

(5) Place the sewn product treated in (1) above into a barrel washer and operate the device for 10 minutes.

+61 Pour 300J of water into the barrel washer, wash with water for 5 minutes at room temperature, and then drain.

(250 liters of water in the barrel washer, 35w/
Put 31 parts of hydrogen peroxide solution and 3 parts of industrial 80 rw% acetic acid into a barrel washer, and add water to bring the total amount to 3,001 parts! After the temperature is reached, the apparatus is operated at 60° C. for 5 minutes and then drained.

(8) Wash thoroughly with hot water and water.

Example 6 Rongalite is used in place of hydrosulfide in the treatment step (3) of Example 5.

Further, after the treatment step (5), the sewn product was taken out and transferred to another barrel washer, and the same treatment as in Example 5 was carried out except that it was steamed for about 5 minutes.
A sewn product was obtained in which dyed areas with irregular partial unevenness of 8 tones similar to the sewn product obtained in (1) were obtained (strength reduction rate: 5%).

Example 7 The same treatment as in Example 6 was carried out except that the blue denim used in Example 3 was used as the product to be treated, and the entire blue surface layer was dyed with an irregular partial uneven dyeing tone using thren dye. A sewn product was obtained in which the parts were developed (strength reduction rate: 6%).

Example 8 The same treatment as in Example 5 was carried out except that the brown denim used in Example 4 was used as the product to be treated.
A sewn product was obtained in which irregularly uneven dyed areas caused by thren dye appeared over the entire brown surface layer (strength reduction rate: 5%).

Example 9 As a treated product, 100% cotton 30 subjected to underbleaching treatment
The same process as in Example 5 was carried out except that upper and lower garments sewn from fabric made of /2' S twill (300 da/d) were used, and the entire white surface layer was coated.
A sewn product was obtained in which dyed areas with an irregular and uneven dyeing tone due to the threne dye were obtained (strength reduction rate: 6%).

Claims (1)

[Claims] 1. A discharge printing sewn product characterized in that a discharge printing agent, a sizing agent, or a discharge printing agent, a sizing agent, and a polishing stone to which a dye that is resistant to the discharge printing agent is attached are brought into contact with the sewing product in a washing machine. Production method. 2. The method for producing a discharge-printed sewn product according to item 1, wherein the discharge-printing agent is potassium permanganate, sodium hypochlorite, or a mixture of hydrosulfide and sodium hydroxide. 3. The glue is talc, China clay, kaolin, clay,
and/or a white pigment. 4. The method for producing a discharge-printed sewn product according to item 1, wherein the dye is a threne dye. 5. The method for producing a discharge-printed sewn product according to item 1, wherein the polishing stone is a natural polishing stone, an artificial polishing stone, and/or a plastic polishing stone. 6. The method for producing a discharge-printed sewn product according to item 1, wherein the washing machine is a rotary drum washer, a barrel polisher type washer, or a rotary cylinder type washer.