KR20190062012A - Method of High-pressure Garment dyeing of Sewing Bag - Google Patents

Abstract

The present invention provides a method of high-pressure garment dyeing of a sewing bag, dyeing under rotation of a dye bath in a closed drum type dye bath, and comprises (a) a step of supplying a dyeing solution having a bath ratio of 1 : 1 to 1 : 10 with respect to the weight of the sewing bag; and (b) a step of dyeing a sewing bag at a temperature of 40 to 130°C and an air pressure of 2.0 to 3.0 bar. According to the present invention, it is possible to secure excellent shape stability and reproducibility as well as to diversify materials applied to high-pressure garment dyeing by controlling the bath ratio, pressure, temperature, rotation speed and the like in dyeing the sewing bag.

Description

Method of High-pressure Garment Dyeing of Sewing Bag "

The present invention relates to a high pressure garment dyeing method of a sewing bag capable of realizing a natural vintage effect while maintaining a new sensibility. More specifically, the garment dyeing of the sewing bag is carried out under a pressure of 2.0-3.0 bar, so that the temperature can be easily controlled and the garment dyeing can be applied to the sewing bag of various materials. The high pressure garment having excellent shape stability and reproducibility ≪ / RTI >

Fiber dyeing means that the dye is fixed to the fiber, film, leather, or the like through the medium. The principle of dyeing is that the ionic water-soluble group of the dye is first dissolved in water molecules and dissolved to form a salt solution, and then the hydrophilic group (hydroxyl group, amino group, carboxyl group) of the fiber is wetted with the salt solution according to the dyeing temperature. That is, the dye diffuses toward the surface of the fiber in a water and hydrated state, reaches the surface of the fiber, adsorbs to the outer surface of the fiber, and then diffuses and adheres to the inside of the fiber with time. Dyeing is the type of dye and auxiliary agent (Carrier) that facilitates the penetration of the saline between tissues of the hydrophobic fiber (synthetic fiber), precise liquid ratio of water, solvent etc., pH, and so on. Also, the dyeing of the fiber includes dyeing, dyed in the state of the yarn, dyed in the state of the dyed fabric, the knitted fabric and the warp knitted fabric, and various dyeing techniques. Dyeing differs depending on the fiber material. First, polyamide based synthetic fibers, such as nylon, are dyed with disperse dyes, acid dyes, mordant dyes, etc. and dyed mainly using Rapid or jigger dyeing machines. Polyamides start to slowly dye in 30-40 ° C baths, raise to 80-90 ° C and stain for 30-60 minutes. If the dyeing is insufficient, the carrier will help the dyeing. On the other hand, in the case of polyester-based synthetic fibers, it is difficult to dye at a temperature of 85 ° C and only pale / neutral dyeing is possible at 100 ° C. Therefore, a dispersion dye or vat dye is used at a high temperature Dyeing can also be done in pigs or pigmented at high temperatures of 210-220 ° C. On the other hand, in the case of cotton, which is a natural fiber, direct dyes, reactive dyes, vat dyes and the like can be used and the dyeing temperature corresponds to 70-100 ° C. In particular, when dyes are dyed with reactive dyes, reactive dyes and cellulosic dyes are stained with strong covalent bonds. Therefore, once fixed dyes are not easily modified, uniform dyeing should be performed using a leveling agent before fixing.

Fiber dyeing is applied not only to single fibers, but also to blend fabrics, textile fabrics, and composite fabrics. For T / C (polyester and cotton) blends or fabrics, dyeing polyester side at 120-130 ° C To stain the cotton side. In case of N / P blend or woven fabrics, dyeing should be done at high temperature. In case of Polyester side, it may cause transfer to Nylon side. In case of N / C, nylon is stained with jigger or Rapid, and the cotton side is stained with Batch type. Dyeing technology has various kinds of fibers, and as the texture of the yarn and the fabric becomes complicated, the condition control required for dyeing may become difficult. In addition, in the case of textiles, the dyeing effect may vary depending on the texture of weft and slope, that is, the texture. For example, C / N, where the cotton side is exposed to the surface compared to N / C where the nylon side is exposed to the surface, can be excellent in fastness.

On the other hand, unlike the conventional method of making a bag by cutting with a dyed fabric, there is also a method of dyeing a finished bag as it is, which is called garment dyeing. If it is stained with garment, it will be sewed, water will fall out, and it will be dirty and used feeling can be realized. In addition, the garment dyeing is not only natural in color, it is also luxurious, and depending on how you manage it under the same conditions, you get different effects, and you can feel more natural and vintage style over time. In addition, the fashion trend is called "vintage", which preserves the past design, atmosphere, and sense by keeping the old and familiar remodeling feeling, not the new by protection mind in the destructed environment pursuing the eco-trend. More and more. The future vintage will evolve into a combination of various functions in addition to the atmosphere of the past, and this trend is expected to continue steadily in the future.

Of the conventional techniques related to fiber dyeing, in particular, patent technology for implementing garment dyeing or vintage effect is disclosed in Korean Patent Application No. 10-1998-0040996 entitled " Indigo dyeing method of garment using a buffer system and dyeing device thereof " exist. The patent discloses an indigo dye for dyeing garments using a buffer solution composed of sodium carbonate / formic acid and having a controlled pH during dyeing of garments using an indigo dye, A method of dyeing garments and a dyeing apparatus. Other patented technologies include European Patent Application EP 2002-733317 entitled " METHOD OF PROCESSING INDIGO-DYED FABRIC AND INDIGO-DYED FABRIC PROCESSED BY THE METHOD ", which includes a technique of applying a nitrogen-based oxidant to an indigo dyeing cloth and heat treating And an aqueous solution containing at least one substance selected from the group consisting of hydrochloric acid, magnesium chloride, sulfuric acid, aluminum sulfate, acetic acid, zinc acetate, phosphoric acid and magnesium phosphate is applied to the indigo dyeing cloth, There is also a Japanese Patent Application JP 2002-226255, in which a processing method imparting a feeling is described. However, existing patented technologies related to garment dyeing or vintage dyeing have a large number of atmospheric pressure garment dyeing, and there is no garment dyeing technique which is easy to control the shrinkage of fabric at high pressure and excellent color reproducibility.

Numerous papers and patent documents are referenced and cited throughout this specification. The disclosures of the cited papers and patent documents are incorporated herein by reference in their entirety to better understand the state of the art to which the present invention pertains and the content of the present invention.

Generally, garment dyeing has mainly used a single material capable of dyeing at room temperature and atmospheric pressure using a single dye such as cotton or nylon. These materials can be dyed at temperatures below 100 ℃ due to the nature of the dyes used (reactive or acidic dyes), and it is easy to add additional salt formers so that they are not difficult to dye at normal room temperature and atmospheric pressure. However, PET, Split fabrics had to be able to maintain controlled friction and high temperatures and to be able to predict changes in shape when dyeing in the form of bags, apparel, footwear, and finished products.

 Accordingly, the present inventors have made efforts to solve the above-mentioned problems. As a result, when controlling the bath ratio, pressure, temperature, rotation speed and the like in the dyeing of garments, it is possible to diversify materials applied to high pressure gauge dyeing, And the present invention has been completed.

Accordingly, the object of the present invention is to provide a dyeing method and dyeing method in which the dyeing is carried out in a closed drum type dyeing bath under the rotation of a dyeing bath, (a) a salt solution is introduced so that the bathing ratio is 1: 1 to 1:10; And (b) dyeing the sewing bag at a temperature of 40 to 130 DEG C and an air pressure of 2.0 to 3.0 bar.

According to one aspect of the present invention, there is provided a method of dyeing a garment of a sewing bag comprising dyeing under rotation of a dyeing bath in a closed drum dyeing tank, comprising the steps of: (a) injecting a salt solution so that the bath ratio of the sewing bag is 1: 1 to 1:10; And (b) dyeing the sewing bag at a temperature of 40 to 130 DEG C and an air pressure of 2.0 to 3.0 bar.

The drum type dyeing bath in this specification means a dyeing bath in which dyeing is performed in a rotary manner, and in particular, a dyeing bath having a shape similar to a washing tub of a conventional drum type washing machine, the rotation of which is made by a horizontal axis. In the present invention, the drum type dye bath is hermetically sealed so that the internal pressure can easily rise, and the steam inside is not discharged to the outside.

The term " garment dyeing " as used herein refers to a method of dyeing a bag, a garment, or a shoe, which is sewn and made in close proximity to a product form, unlike an existing method of cutting clothes with a dyed fabric. In particular, the garment dyeing in the present invention will be described as an example of a method of dyeing a sewing bag. Therefore, it is different from sewing dyed fabrics. Dyed fabric and garment dyeing can not be compared with each other because it is difficult to control dyeing more than general dyed fabric.

The main purpose of garment dyeing is to reproduce the old-fashioned feeling of color such as fade-out effect. Garment dyeing puts the sewed bag into dyeing machine, so that the sewing line is broken by the friction generated in the dyeing machine, and natural gradation effect can be obtained, so that it is possible to make a vintage feeling clothes which is commonly called . In the present specification, the term "vintage" is originally derived from French fine wines brewed in the year of harvest of grapes and good wines are meant to be "ripened and best state" as the ripening becomes better. It has become commonplace to say that it is fashionable or fashionable with appeal such as "Old-but goodies" or "New-Old fashion" will be.

As used herein, the term high pressure means a pressure of 2.0 to 3.0 bar as described in step (b). Generally, garment dyeing is applied to a single material such as cotton or nylon which can be dyed at normal pressure without applying pressure. However, in the case of composite fabrics such as PET fabrics, textile fabrics, and NPs, dyeability is poor with general atmospheric pressure garment dyeing, and there are many difficulties in implementing vintage effects. Because atmospheric garment dyeing is difficult to raise the temperature of 120-130 ° C, which is the temperature for dyeing composite fabrics such as PET fabric, textile fabric, NP, and even if the temperature can rise, This is because we can not predict. In particular, the change in fabric shape can be a major factor impeding the perfection of garment dyeing. For example, in the case of the NP-split composite yarn, the dyeing of the PET side and the nylon side must be separately performed because the nylon side and the PET side are produced by the combined spinning of a single filament. When the temperature is increased for the PET staining, side shrinkage or hardening is proceeding, it is necessary to be accompanied by a technique for controlling it. Accordingly, the present invention provides a high-pressure garment dyeing method for applying a pressure of 2.0 to 3.0 bar to easily control the temperature, thereby making it possible to expand a garment dyeing target with a material that is not easy to dye atmospheric pressure garments do. That is, the material to be dyed in the high-pressure garment of the sewing bag of the present invention is not only a single material such as nylon, cotton, and polyester but also N / P, P / N, C / N, N / C, NP-type composite yarns, and the like. Therefore, the high pressure of the present invention is a very important constitution in garment dyeing.

According to a preferred embodiment of the present invention, in the step (a), a salt solution having a bath ratio of 1: 1 to 1:10 relative to the weight of the sewing bag is introduced, and more preferably, the bath ratio of the step (a) 1: 7, and the most preferable bath ratio is 1: 2-1: 5. The term "liquor raito" as used herein means the weight ratio of the saline solution or cleansing bath to the fiber weight in processing and washing. The bath ratio of the present invention is very important. Because dyeing is generally done with a bathing ratio of 1:12 or more, whereas the present invention corresponds to a low bathing dyeing rate of 1:10 or less. When the bath ratio is less than 1: 1, the amount of the salt solution on the fibers is too small to achieve uniform dyeing. If the bath ratio exceeds 1:10, a natural wrinkling phenomenon (washer effect) and a fade-out effect can not be obtained. The garment dyeing of the present invention is carried out under rotation of a closed drum type dyeing tank, which will be described later in more detail, so that the amount of the salt solution can be efficiently reduced and thus a sufficient garment dyeing effect is obtained even with a low bath ratio of 1: 1-1: But it is possible to dye uniformly.

According to a preferred embodiment of the present invention, the garment dyeing in step (b) is performed at a temperature of 40 to 130 DEG C and an air pressure of 2.0 to 3.0 bar, more preferably a temperature of 60 to 120 DEG C And at a pressure of 2.3 to 2.8 bar. In the present invention, it is important that the proper dyeing temperature includes 40 캜. Because materials capable of being dyed at low temperature such as nylon and cotton are usually dyed at a temperature of 60 ° C or higher for uniform dyeing, the present invention has a high pressure-rate of 2.0-3.0 bar, This is because one dye can be made. If dyeing at such a low temperature is possible, it may be very easy to dye fabrics or composite fabrics containing fibers such as Nylon which are susceptible to temperature. For example, in the case of the NP-splitting composite fabric, in order to stain the PET side at normal pressure, the temperature should be raised to 120 ° C. However, if the nylon shrinkage exceeds 15%, the fabric will be torn off and eventually lead to defects . However, since PET can be stained near 100 ° C under high pressure, contraction or hardening of nylon can be easily controlled and prevented. As described above, since the high-pressure garment dyeing of the present invention enables low-temperature bathing and low-temperature dyeing, it is also a great feature that there is an environment-friendly advantage of reducing the amount of wastewater and energy.

According to a preferred embodiment of the present invention, the sewing bag of steps (a) and (b) is a finished semi-finished product or a finished sewing product cut and sewn in consideration of a shrinkage ratio of 1-15% -10% shrinkage ratio, and most preferably 6-8% shrinkage ratio. The term shrinkage rate in this specification means the rate at which the bag is reduced in size due to the increase in density before and after dyeing. In the present invention, density is changed due to application of high pressure during dyeing. Therefore, the size of the sewing bag after dyeing is reduced compared to the size of the sewing bag before dyeing. The increase in density leads to better touch and bulky properties, but in the case of sewing bags, when the density change occurs extreme, the shape of the bag is completely distorted and the value of the product drops. Garment dyeing can not be avoided immediately if defects occur, resulting in a huge loss of sewing costs and energy waste. Therefore, in the present invention, the sewing bag is cut and sewed considering the shrinkage ratio of 1-15% considering the shape change of the allowable range. If the shrinkage ratio is less than 1%, the shape change hardly occurs. Therefore, the unique shrinkage and wrinkle effect due to the garment dyeing can not be obtained. If the shrinkage ratio exceeds 15%, the above- have. In the present invention, it is very important to use finished and sewn semi-finished or sewn finished products considering the shrinkage ratio of 1-15%. Particularly, the sewing bag according to the present invention includes a sewing finished product which is completely sewn in the form of a product, that is, a sewing finished product in which auxiliary materials such as a zipper, a button, a handle, . When the high - pressure garment dyeing is extreme, the semi - finished garment can be selected to perform high - pressure garment dyeing and then to sew the subsidiary material.

In the present invention, since garment dyeing is performed at a high pressure, it may be important to preliminarily process the sewing bag material so as to have a shrinkage ratio of 1-15% together with sewing considering the shrinkage ratio. This may be the case for a fabric or composite fabric, rather than a single fabric. For example, in the case of an NP splittable composite fabric, it is necessary to melt the PET side in the alkali and sufficiently shrink it, and shrink at a high density by using a shrinking agent so that the shrinkage ratio within a shrinkage ratio of 1-15% will be. Therefore, various kinds of fibers having different characteristics are included in the fabric constituting the sewing bag, and as the texture is complicated, the materials processed with high-density and high-density materials can be appropriately selected and used.

According to a preferred embodiment of the present invention, in order to easily control a shape change caused by high-pressure garment dyeing, the semi-finished sewing product or the finished sewing product is manufactured by fabricating a shrinkage- And can be a sewn product. Axis anchoring can be important in the present invention because the size can be controlled such that the shrinkage rate is not significantly changed by providing a similar physical environment that can be achieved during high pressure garment dyeing of the dyed dyes prior to dyeing through shaft fixation. In addition, it is possible to lower the defect rate of the product through the fixing of the shaft and to predict the shrinkage. In the shaft fixing step, it is most important that the fabric is rotated at a temperature of 40-100 ° C and flushed. This is because it is necessary to control the twist of the garment by the torque generated during rotation during the dyeing process in the shaft fixing step. Therefore, shaft fixation needs to be done by providing temperature, rotation speed, and rotation direction similar to the possible dyeing process.

According to a preferred embodiment of the present invention, the sewing bag of the step (a) or (b) may be a post-processed product or a waste bag. The post-processing in this specification refers to the processing performed in the finishing step of the textile or clothing product in general, and the post-processing includes an antifouling processing, a waterproofing processing, a water repellent processing, a flexible processing, a balancing processing, a flame retarding processing, And the like. The present invention can dye high-pressure garments as a post-processed product, and can also dye a waste bag of a commercially available garment or a finished garment for recycling using a high-pressure garment method. In the present invention, it is because of the technical principle of the present invention that dyeing can be carried out to a post-processed product or a waste bag, and also dyeing is possible at a relatively low temperature by increasing the pressure. In the case of post-processing products or waste bags, various processing agents remain. When dyeing at high temperature, the processing agent may deform the clothes surface or may come off from clothes. However, since the present invention is capable of relatively low temperature dyeing, Or a garment bag, and can perform garment dyeing. In this respect, the recycling efficiency of the bag of the present invention can be enhanced, and the bag can be reborn as a bag with a unique feel, which is very economically and environmentally significant.

According to a preferred embodiment of the present invention, the step (b) is temperature-rising at a rate of 0.5-2 ° C per minute and is leveled at 40-100 ° C for 20-80 minutes, And cooling the fiber at 20-60 ° C for 20-80 minutes. In this case, it is preferable to use a fiber capable of dyeing at a low temperature of 100 ° C or below (atmospheric pressure), such as cotton or nylon . According to a preferred embodiment of the present invention, the step (b) is performed at a rate of 0.5-2 ° C per minute and leveled at 80-130 ° C for 20-80 minutes, followed by heating at 0.5-2 ° C per minute at 20-60 ° C And cooling for 20 to 80 minutes. This case corresponds to a fiber which should be dyed at a high temperature of 100 DEG C or more (atmospheric pressure) like PET. The leveling in this specification means to leave the dyed material in the dyeing tank for a certain period of time for the uniformity of dyeing. During this time, the dyeing bath may rotate or remain suspended for a while.

In addition, in dyeing a sewing bag composed of two-fiber fabrics or composite fabrics having different dyeing properties, the step (b) of the present invention is characterized in that (i) the temperature is raised by 0.5-2 ° C per minute, After leveling for 80 minutes, cooling at 20-60 < 0 > C for 20-80 minutes by warming at 0.5-2 [deg.] C per minute; (Ii) discharging the saline used in step (i) and washing the sewing bag; And (iii) adding a salt solution, raising the temperature by 0.5 to 2 DEG C per minute, leveling the mixture at 80 to 130 DEG C for 20 to 80 minutes, warming the mixture at 0.5 to 2 DEG C per minute and heating the mixture at 20 to 60 DEG C for 20 to 80 minutes The step (b) of the present invention is characterized in that [(i) the temperature is raised by 0.5 to 2 DEG C per minute, and the mixture is leveled at 80 to 130 DEG C for 20 to 80 minutes, Cooling at 20-60 < 0 > C for 20-80 minutes; (Ii) discharging the saline used in step (i) and washing the sewing bag; And (iii) adding a salt solution, raising the temperature by 0.5-2 ° C. per minute, leveling the mixture at 40-100 ° C. for 20-80 minutes, warming the mixture at 0.5-2 ° C. per minute and heating the mixture at 20-60 ° C. for 20-80 minutes And a cooling step. Here, after dyeing a specific part of the sewing bag, it is necessary to carry out a step of discharging and washing the salt solution, so that the dyeing may not occur in other parts. In the case of the high-pressure garment dyeing method of the present invention, even a sewing bag made of a woven fabric or a composite fabric having poor shape stability under high pressure is easy to dye, so that it includes both low temperature dyeing and high temperature dyeing . Further, the fabric or composite fabric has a higher density while controlling the shrinkage rate due to the dyeing of the sewing bag under high pressure, and as a result, the sense of touch improves, thereby increasing the value of the product. Relatively high-temperature dyeing may be performed first, or low-temperature dyeing may be performed first, which can be appropriately selected according to the nature of the material constituting the sewing bag.

According to a preferred embodiment of the present invention, the dyeing bath is rotated at a rotational speed of 50-80 rpm, and the dyeing bath is performed in a combination of forward rotation and reverse rotation. It is important in the present invention that the dyeing is carried out under rotation in a drum type dye bath. In general, high-pressure dyeing of fabrics is done by rapid dyeing (rapid dyeing time is as short as possible and the dyeing is carried out by transferring the salt and dyed materials together), but if the sewing bag is put into the rapid dyeing machine, Because the movement of the bag can not be controlled, the shape is completely distorted, which is not suitable for rapid dyeing. Therefore, rotary dyeing, that is, drum type rotary dyeing, which rotates about the horizontal axis is most suitable for garment dyeing. In this case, the spinning speed of the dyeing tank is most suitable at 50-80 rpm. If the speed is less than 50 rpm, dyeing in the sewing bag does not easily occur, and if it exceeds 80 rpm, high friction is given to the sewing bag. In particular, dyeing performed under the rotation of the drum type dyeing tank is an essential factor for enabling the above described low water saving. This is because the dyeing process such as rapid dyeing is required to keep the salt in the salt solution continuously until it is in contact with the dye, so that the amount of the salt solution should sufficiently immerse the salt solution in the salt solution, but the drum type rotary dyeing causes the salt solution to contact the salt solution As the dyeing bath rotates, it rises to the upper part, the direction changes, and it is dropped into the salt solution again, so that the dyed material comes into contact with the salt solution in various directions and becomes dyeable. Therefore, sufficient dyeing is possible even with a low bath ratio. As a result, the garment dyeing can achieve a vintage effect at a low bath ratio of 1: 1 to 1:10, and the dyeing which can be reduced in cost is cylindrical rotating type and cylindrical rotating type so that damage to the sewing bag can be minimized, It can be seen as a complex action. On the other hand, the rotation direction is another important factor for uniform dyeing. When the dyeing is performed in one direction only, the shape of the sewing bag is twisted to one side and unevenness is caused by the unevenness. It does not appear excellent. Therefore, when dyeing garments, the rotation should be able to proceed in both directions.

According to a preferred embodiment of the present invention, the drum type dye bath is equipped with a cooling means and is capable of maintaining or controlling the temperature within a set temperature range. In the present invention, it is very important to be able to maintain the temperature of the drum type dye bath within a certain range. This is because, since the present invention imparts a high pressure during dyeing of the garment, there is a possibility that the internal temperature due to the pressure may continuously increase. Therefore, if the temperature within the temperature range set by the cooling means can be maintained in the dyeing tank, the damage of the sewing bag due to the temperature increase and the shape change can be controlled.

According to a preferred embodiment of the present invention, the high-pressure garment dyeing may further include a washing step and a dewatering step of discharging and washing the saline solution after the step (b). Washing and dewatering is a step that must be accompanied by a conventional dyeing process. Therefore, the soaping agent used for flushing, the washing temperature, the flushing time and the dewatering time are not necessarily limited. However, it may be preferable to rinse the hot water at 30-110 캜 for 10-50 minutes, and dehydrate for 40-300 seconds in a rotary dehydrator at 100-500 rpm.

The features and advantages of the present invention are summarized as follows:

(a) dyeing under rotation of a dyeing bath in a closed drum type dyeing chamber, (i) adding a salt solution so that the bathing ratio by weight of the sewing bag is 1: 1 to 1:10; And (ii) dyeing the sewing bag at a temperature of 40 to 130 DEG C and an air pressure of 2.0 to 3.0 bar.

(b) According to the present invention, it is possible to improve the low color fastness caused by the conventional garment dyeing, and to produce a sewing bag excellent in natural washer effect (fine lines) and fade-out effect.

(c) According to the present invention, a garment dyeing material can be extended to a material which is dyed at a high temperature, and can easily be applied to a textile material, a composite fabric, or the like, .

(d) According to the present invention, high-value-added products can be developed by combining the new sensibility of synthetic fibers and meeting vintage trends.

(e) The high-pressure garment dyeing of the present invention can be used as an environmentally friendly dyeing method capable of reducing the amount of wastewater and energy by enabling low-temperature bathing and low-temperature dyeing.

(f) According to the present invention, since it can be easily applied to a sewing bag after water-repellent processing such as water repellency, it is possible to re-stain using clothes that can be discarded, and cost reduction and recycle effect can be obtained.

(g) According to the present invention, it is possible to secure competitiveness for the upgrading of clothing products and the technology for utilizing composite fabrics mainly in developed countries.

1 is a photograph showing a cross section of a high shrink fabric before high pressure garment dyeing.
Figure 2 is a photograph showing a section of a garment after high pressure garment dyeing of a high shrink fabric.

Hereinafter, the present invention will be described in more detail with reference to Examples. It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not to be construed as limiting the scope of the present invention. It will be self-evident.

Example

Throughout this specification, the percentages used to denote the concentration of a particular substance, unless otherwise noted, are as follows: solid / solid is (weight / weight), solid / liquid is (weight / volume) The liquid is (vol / vol)%.

Example 1. Selection of fabric dyeing fabric

The item number was assigned to PP209 as plain weave fabric with 60Denier / 36Filament NP splitting composite yarn woven with light / weft 50:50 and selected as garment dyeing fabric. The selected PP209 was divided and adhered by applying a high shrinkage processing method known in Korean Patent No. 10-0977677. The concrete method was as follows. First, water is supplied to the dyeing apparatus at a temperature of 20-40 ° C. Then, 10-30 g / L of sodium hydroxide and 1-4 g / L of a buffering agent, 1-4 g / L of 5 to 200 g / L of bath softener and water softener were added. Then, the PP209 raw material having been subjected to the digestion and refining process was added thereto, and the internal temperature of the dyeing apparatus was gradually raised from 0.5 to 2.0 ° C per minute to reach 90-120 ° C. After maintaining the temperature at the final elevated temperature for 30-60 minutes, . After the aging process, the temperature of the dyeing machine was gradually reduced from 0.5 to 2.0 ° C per minute to reach 55-65 ° C, and water, sodium hydroxide, buffering agent, bath softener, and watering agent were discharged. Then, the dough was washed with water for 20 to 30 minutes, the dough was heated at 2 캜 / min until the temperature of the dyeing machine became 40 캜, and the dough was taken out at 40 캜. The final shrinkage-treated fabric BURW PP209 (sample of highly shrunk PP209) was selected for high pressure garment dyeing.

Example 2. Testing and Sewing of Pants

In order to reduce the burden of garment sewing cost of sewing bag and to predict simple shrinkage, color reproducibility and dye usage, bag test was performed before high - pressure garment dyeing. The bag test was carried out as follows. The BURW PP209 prepared in Example 1 was cut to a size of 1.5m x 2m and each edge was sewn similarly to a bag. After preparing five identical BURW PP209 samples, they were washed with water at 70-100 ° C for 20 minutes in a rotary dyeing machine, and then put into a garment dyeing machine.

After preparing the fabrics, the dyeing agent was added to the dyeing machine so that the amount of the dyeing solution to be added to the dyeing machine could be 2-5 times the weight of the dyeing agent, and the leveling agent and dispersing dye (Synoron Black SMD Liq: 15.0000% , Serilene Y / Brown RIS: 0.4000%, Foron Rubin SzG5L: 0.0500%). The temperature of the dyeing machine is raised by 0.5-1 ° C. per minute, and leveling (fastness and uniform dyeing) is carried out at 100-120 ° C. for 20-80 minutes, and further heating at 1-1.5 ° C. per minute for 30-60 ° C. for 20-80 minutes And the primary poly side was stained. At this time, the pressure of the dyeing machine was maintained at 2.0-3.0 bar, and the spinning speed of the dyeing machine was set to be 50-80 rpm. After the dyeing of the poly side was completed, the saline was drained and washed, and then the secondary nylon side was stained by the same method. However, the nylon side was dyed with an acid dye (Acid Balck LDX: 1.0000% based on the weight of dye in terms of weight of water), the leveling temperature was 80-100 ° C, and the cooling temperature was maintained at 30-50 ° C. In this case, after dyeing the primary and secondary stains, 0.5 to 5 g / L of TK preparation was added to a liquid quantity of 10 L, and water was washed with hot water for 10 to 50 minutes at 60 to 110 ° C., And dehydrated for -300 sec.

The rate of change in length according to the length and width of the dyed BURW PP209 was calculated in the following Table 1, and the rate of change in density was measured and shown in Table 2 below. In this case, the shrinkage ratio was calculated as "{(length after staining) - (length before staining)} / (length before staining) Density before dyeing) ".

As a result of the bag test according to the dyeing of BURW-PP209, the length change rate and the density change rate occurred within 3-10%, and according to the result of the visual evaluation by the experts, . In order to perform full-scale garment dyeing, bags were sewn with an oversize of 6.5-7% on average considering the change rate.

ITEM Type Weight (g) direction Total (mm) After (mm) Length change rate (%) BURW-PP209 Trousers 20 slope 200 190 5.00 Weft 150 145 3.33

ITEM Type Weight (g) direction I (T) After (T) Density change rate (%) BURW-PP209 Trousers 20 slope 200 216 8.00 Weft 120 130 8.30

Example 3. High pressure garment dyeing

The above-mentioned 6.5-7% oversized sewing bag (BURW PP209) was dyed in the same manner as the dyeing method for the bag test of Example 2 above. The primary poly side dyeing was carried out using a disperse dye (Synoron Black SMD Liq, based on the weight of dye in terms of weight of water), with a bath ratio of 1: 2-1: 5 and a pressure of 2.0-3.0 bar at a rate of 50-80 rpm (Acid Balck LDX: 1.0000% based on the weight of water) was used for dyeing the secondary nylon side. The dyeing of the secondary nylon side was carried out using an acid dye (15.0000%, Serilene Y / Brown RIS: 0.4000%, Foron Rubin SzG5L: And the product was stained. During the primary dyeing, the temperature of the dyeing machine was raised by 0.5-1 ° C. per minute, maintained at 100-120 ° C. for 20-80 minutes, leveled again at 1-1.5 ° C. per minute, cooled at 30-60 ° C. for 20-80 minutes , While the final temperature elevation temperature during the secondary dyeing was maintained at 80-100 ° C and the cooling temperature was maintained at 30-50 ° C. In the same manner as in Example 2, after primary and secondary staining, 0.5 to 5 g / L of TK preparation was added to a 10 L liquid amount, and the flask was washed with hot water for 10 to 50 minutes at 60 to 110 DEG C, And dehydrated at a speed of 100-500 rpm for 40-300 sec.

Example 4. Product testing according to high pressure gauge dyeing

The density, dimensional change, tensile strength, tear strength, wash fastness, friction fastness, and dry fastness to washing of the high-pressure gauge fabric finished in Example 3 were tested. The test was conducted with the Korea Textile Research Institute (laboratory environment: temperature 20 ± 2 ° C, relative humidity 65 ± 2%). The results are shown in Table 3 below.

Test Items
(Unit standard) Test Methods
(unit) Test result Test conditions / Remarks division Before dyeing After dyeing density
(All / inchKS K 0511: 2004) (All / 2.54cm) slope 200 210 Weft 120 127.4 Dimensional change rate
(%) (KS K ISO 5077: 2007) Washing machine method
(%) slope -4.8 (-) contraction, (+) kidney
* 130 ℃ / 40 minutes at the request of the client Weft -1.2 The tensile strength
(N) (KS K 0520: 2009) Graffiti 10x15cm (N) slope 480 512 Weft 278 250 Phosphorus strength
(N) (KS K ISO 13937-1: 2009) Pendulum method
(N) slope 16.1 15.8 Weft 8.7 8.9 Wash fastness
(Grade) (KSK ISO 105-C06: 2007) A1S method
(class) Fading color 4-5 40 ° C, 30 minutes
0.4% ECE standard detergent, beads 10  PET contamination 4 Nylon Contamination 3-4 Friction fastness
(Grade) (KS K 0650: 2011) Croquette metric
(class) dry 3-4 10 times Wet 3-4 Dry cleaning fastness (grade) (KSK ISO 105-D01: 2010) Perchlorethylene
(class) Fading color 4-5 30 ± 2 ° C, 30 minutes PET contamination 4 Nylon Contamination 4

As a result, the BURW PP209 bag exhibited a dimensional change of less than 5% and exhibited a natural garment dyeing effect, and the density was higher than before dyeing. In addition, tensile and tear strength were not significantly changed within the similar range, and there was no fear of the strength deterioration due to garment dyeing. Also, the fastness values measured by the fastness tester were higher than the grade 4, Product completeness was evaluated to be very good.

Example 5. Panel evaluation

The panel evaluation was performed using the high pressure gauge dyeing product completed in Example 3 above. Panel evaluation was carried out with fertilizer and dyed dyed dyeing products of the same color (Nylon 100% material, comparative product below) divided into expert evaluation and public evaluation. In the expert evaluation, product evaluation was made by color evaluation, torsional evaluation, and thread loosening evaluation of sewing line. Expert evaluation consisted of 5 dyestuff experts, 5 sewing experts, and 5 designers. In the general evaluation, 10 men and 20 women were selected. The overall average results of the panel evaluations are shown in Table 4 below. The evaluation score was good or excellent (preferred) from 1 point to 5 points on a scale of 5 points.

Test Items Expert Reviews Public
Rating Color evaluation
(Vintage effect) torsion Thread loops Perfection Compare Products 4 4 4 4 3 High-pressure garment
Dyed product
(Invention) 5 4 4 5 5

As a result of the panel evaluation, the high pressure garment dyeing products obtained the same score as the comparative products of the pressure garment product in the twist and the loosening, but the color evaluation and the product completeness according to the vintage effect were rated higher than the comparative products. In particular, the experts evaluated the smooth wrinkles on the surface, the natural wash effect (fine wrinkle effect) and the fade out effect on the sewing line. On the other hand, the general preference was very good (out of five points) even for the general public who could not accurately judge the subtle difference of the product. Therefore, the customer satisfaction of the high pressure garment dyeing product was very good.

Claims (13)

A high pressure garment dyeing method in a sewing bag comprising dyeing under rotation of a dyeing bath in a closed drum dyeing tank, comprising:
(a) injecting a salt solution so that the bath ratio of the sewing bag is 1: 1 to 1:10; And
(b) dyeing the sewing bag at a temperature of 40 to 130 DEG C and an air pressure of 2.0 to 3.0 bar;
The method according to claim 1,
Wherein the sewing bag of steps (a) and (b) is a semi-finished sewing product or a finished sewing product which is cut and sewn in consideration of a shrinkage ratio of 1-15%.
3. The method of claim 2,
Wherein the semi-finished sewing product or the finished sewing product is a sewing product of a fabric whose shrinkage ratio is controlled through a shaft fixing step at a temperature of 40-100 ° C.
The method according to claim 1,
Wherein the garment of steps (a) and (b) is a post-processed product or a waste bag.
The method according to claim 1,
Wherein the bath ratio of step (a) is 1: 2 to 1: 5.
The method according to claim 1,
The step (b) is a step of raising the temperature by 0.5-2 ° C per minute, leveling the mixture at 40-100 ° C for 20-80 minutes, warming the mixture at 0.5-2 ° C per minute, and cooling the mixture at 20-60 ° C for 20-80 minutes Characterized in that the high-pressure garment dyeing method of the sewing bag.
The method according to claim 1,
In the step (b), the temperature is raised at a rate of 0.5-2 ° C per minute and the temperature is raised at 80-130 ° C for 20-80 minutes, followed by cooling at a rate of 0.5-2 ° C per minute and cooling at 20-60 ° C for 20-80 minutes ≪ RTI ID = 0.0 > 11. < / RTI >
The method according to claim 1,
Wherein the step (b) comprises the following steps: a high-pressure garment dyeing method of a sewing bag;
(I) the temperature is raised by 0.5 to 2 DEG C per minute, the temperature is raised at 40 to 100 DEG C for 20 to 80 minutes, the temperature is decreased by 0.5 to 2 DEG C per minute, and the cooling is performed at 20 to 60 DEG C for 20 to 80 minutes;
(Ii) discharging the saline used in step (i) and washing the sewing bag;
(Iii) adding salt solution, raising the temperature by 0.5-2 ° C per minute, leveling it at 80-130 ° C for 20-80 minutes, warming it by 0.5-2 ° C and cooling it at 20-60 ° C for 20-80 minutes step.
The method according to claim 1,
Wherein the step (b) comprises the following steps: a high-pressure garment dyeing method of a sewing bag;
(I) raising the temperature by 0.5 to 2 DEG C per minute, leveling it at 80 to 130 DEG C for 20 to 80 minutes, cooling by 0.5 to 2 DEG C and cooling at 20 to 60 DEG C for 20 to 80 minutes;
(Ii) discharging the saline used in step (i) and washing the sewing bag;
(Iii) adding a salt solution, raising the temperature by 0.5-2 ° C. per minute, leveling the mixture at 40-100 ° C. for 20-80 minutes, warming by 0.5-2 ° C., cooling at 20-60 ° C. for 20-80 minutes step.
The method according to claim 1,
Wherein the dyeing bath is rotated at a rotational speed of 50-80 rpm.
11. The method of claim 10,
Wherein the spinning of the dyeing bath is performed in such a manner that the drum dyeing bath is used in combination with the forward spinning and the reverse spinning.
The method according to claim 1,
Wherein the drum type dyeing bath is provided with cooling means to control the temperature within a set temperature range.
The method according to claim 1,
Wherein the high-pressure garment dyeing further comprises a water washing step of draining and washing the saline solution with the step after the step (b) and a dehydrating step.

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