KR101000885B1 - Silk Fabric Mixed with Polyester for Water Cleaning and Process for Preparing Same - Google Patents

Abstract

Water-washable polyester blended silk fabrics according to the present invention employ less than 50% by weight of modified polyester filament yarns copolymerized with 5-10 wt% of polyethylene glycol having a molecular weight of 500-1,000 and at least 50% by weight of silk yarn. It is characterized by being woven by. The modified polyester filament yarn has a maximum dyeing amount as a disperse dye at a temperature of 100 ° C. or lower and an initial tensile modulus of 700 to 1,100 kg / mm ² . The polyester filament yarn and silk yarn are interwoven or interwoven into woven fabrics and interwoven fabrics, respectively. The polyester mixed silk fabric of the present invention can maintain the properties of silk fibers even after washing by using a polyester yarn which can be dyed at room temperature and normal pressure with a silk yarn.

Silk fabric, polyester, water washing, color fastness, initial tensile modulus

Description

Silk Fabric Mixed with Polyester for Water Cleaning and Process for Preparing Same}

Field of invention

The present invention relates to silk fabrics. More specifically, the present invention relates to a silk fabric capable of washing water with excellent morphological changes, feel, and color fastness even after washing, while maintaining the excellent advantages of silk.

Background of the Invention

Silk reigns as the finest fiber with its elegant luster, smooth touch, clarity, and natural feel, but water laundering is excessively shrinking, stiffness of touch, and poor color fastness. It has a disadvantage. Silk has also been limited in its use as a practical fiber due to its wrinkles, easy yellowing and weak friction.

Due to these problems, garments made of silk fabrics need to be carefully cleaned, such as dry cleaning, storage with hygroscopic and deoxygenating agents.

Various methods have been developed and attempted to overcome these disadvantages of silk products. As a representative method thereof, a method of improving silk fibers themselves, a method of improving silk fibers or fabrics by post-processing, a method of compensating disadvantages by mixing with other materials, and the like are known.

 Among these methods, post-processing is a method of controlling the content of sericin remaining in silk fibers, introducing a reactive crosslinking agent, or processing with urea, epoxy, silicone, acrylic or polyamide resins. Through such a method, it is intended to improve the functions of the friction resistance, wrinkle prevention, shrinkage, yellowing, etc. of the silk fabric. Republic of Korea Patent Application No. 1990-10820 discloses a method of manufacturing a silk fabric capable of washing water by processing the silk fabric with a resin, Republic of Korea Patent Application No. 1997-38183 a method for producing a silk fabric using a chemical composition Is starting. However, these patented methods can also improve some of the disadvantages of silk, but it can not be said to be a true improvement of silk fabrics because it impairs the silky soft touch or beautiful luster that is inherent in silk.

The method of compensating the disadvantages of silk by mixing other materials with silk fibers has also been tried for a long time. Almost all fibers such as cotton, wool, rayon, hemp, acetate, nylon, and polyester have been tried as materials to be mixed with silk. The advantage of mixing with other materials is that it can combine the cost reduction aspect and the advantages of the blended material to silk. However, depending on the content of the material used, the touch and gloss of the silk is fluctuated, and there is a side depending on the properties of other materials. For example, cotton is the most mixed with silk among natural materials, but due to the difference in the touch and specific gravity caused by the yarn, it is very different from the original feel of silk. Among synthetic fibers, polyester fiber was the most similar to silk in terms of specific gravity, gloss, and touch, and was developed most actively as a silk-like material. However, due to the different dyeing / processing conditions, it was difficult to develop due to problems with mixed use. . In other words, when the silk and polyester fibers are mixed, physical performances such as washability, wrinkle resistance, and friction resistance are remarkably improved.However, the weight loss process, which is the basic process of polyester, is impossible due to silk, so the touch of polyester fibers may be applied to silk. It is difficult to get close to each other, and it is difficult to obtain the quality of silk treated under this condition because it loses its inherent luster because it is secured only when proceeding at high temperature / high pressure during dyeing.

Therefore, the present inventors pay attention to the fact that using a polyester yarn which can be dyed at room temperature and atmospheric pressure together with a silk yarn can develop a polyester mixed silk fabric that can maintain the characteristics of silk fibers by solving problems in dyeing. To develop the invention.

An object of the present invention is to provide a silk fabric capable of water washing.

Another object of the present invention is to provide a silk fabric capable of water washing that can maintain the excellent advantages of silk as it is excellent in shape change, touch, dyeing fastness, etc. even after washing the water.

It is another object of the present invention to provide a polyester mixed silk fabric capable of water washing, which can maintain the properties of silk fibers even after washing by using a polyester yarn which can be dyed at room temperature and normal pressure with a silk yarn.

It is another object of the present invention to provide a polyester blended silk fabric and fabric which is water washable.

The above and other objects of the present invention can be achieved by the present invention described below.

Summary of the Invention

Water-washable polyester blended silk fabrics according to the present invention employ less than 50% by weight of modified polyester filament yarns copolymerized with 5-10 wt% of polyethylene glycol having a molecular weight of 500-1,000 and at least 50% by weight of silk yarn. It is characterized by being woven by.

The modified polyester filament yarn has a maximum dyeing amount as a disperse dye at a temperature of 100 ° C. or lower and an initial tensile modulus of 700 to 1,100 kg / mm ² .

The polyester filament yarn and silk yarn are interwoven or interwoven into woven fabrics and interwoven fabrics, respectively.

The woven polyester blended silk fabric is dyed in one bath at 95-98 ° C. temperature and atmospheric pressure using a disperse dye and an acid dye in an acidic atmosphere when the dye concentration is low in salt dyeing, and an acid when the dye concentration is relatively high. In the atmosphere, using a disperse dye, dye at a temperature of 95 ~ 98 ℃ and normal pressure, reduced washing, then dyed with a reactive dye in an alkaline atmosphere and washed with water. In printing, disperse dyes and acid dyes are mixed and in-printed, steam heated at a temperature of 100-110 ° C. for 20-40 minutes, and washed with a tenter after washing with water.

Hereinafter, specific contents of the present invention will be described in detail below.

Detailed Description of the Invention

The present invention relates to a polyester mixed silk fabric capable of washing water with excellent morphological changes, feel, color fastness, etc., even after washing, while maintaining the excellent advantages of silk.

Polyester fibers are most similar to silk in terms of specific gravity, gloss, and touch, and have been actively developed as silk-like materials. However, due to the different dyeing / processing conditions from silk, there were many problems in mixed use, which did not lead to active development. For example, general polyester should be dyed at high pressure at a high temperature of 130 ° C. or more using a disperse dye. However, if silk is dyed under these conditions, the gloss disappears and the touch becomes stiff. Therefore, the present inventors have come to develop the present invention with the understanding that using a polyester yarn that can be dyed at room temperature and atmospheric pressure together with a silk yarn can solve the problems in dyeing.

In another aspect, the present invention is to produce a silk fabric capable of washing water by mixing polyester in the silk. Even if it contains other materials, the silk content must exceed 50% by weight in order to be treated as a silk fabric. Accordingly, the polyester blend silk fabric of the present invention is preferably woven using 25-49 wt% modified polyester filament yarn and 75-51 wt% silk yarn.

If silk fabrics can be washed with water, they can be made into silk fabrics, including sweaters and pajamas. Since pajamas and underwear cannot be dry cleaned every time, they should be able to wash their clothes.

In the present invention, less than 50% by weight of modified polyester filament yarn copolymerized with 5 to 10 wt% of polyethylene glycol having a molecular weight of 500 to 1,000 is used as the polyester yarn which can be dyed at room temperature and normal pressure. In the polymerization process of the polyester fibers, copolymerized polyethylene glycol having a molecular weight of 500 to 1,000 is 5 to 10 wt% to obtain a modified polyester copolymer. When copolymerizing 5 to 10% by weight of polyethylene glycol having a molecular weight of 500 to 1000 molecular weight, a modified polyester having an initial tensile modulus similar to silk and dyed at a temperature of 100 ° C. or lower and atmospheric pressure can be obtained. However, these properties cannot be expected in the range below or above this numerical range. Polyester filament is manufactured using this copolymer. This modified polyester filament yarn has a maximum dyeing amount as a disperse dye at a temperature of 100 ° C. or lower and an initial tensile modulus of 700 to 1,100 kg / mm ² .

Silk is used as warp yarns and polyester filaments as weft yarns to make fabrics, or two types of fibers are made using circular knitting machines or flat knitting machines. At this time, the mixing ratio of the modified polyester is 25 to 49 wt%. The silk yarn used in the present invention can be either silk filament or silk spun yarn.

The polyester filament yarn and silk yarn are interwoven or interwoven into woven fabrics and interwoven fabrics, respectively. The silk fabrics or fabrics of the present invention prepared as described above are mostly arranged on the surface of the silk, the modified polyester is arranged on the inside or the back, maintaining the advantages of the silk, less overshrinkage or dripping after washing and feel It is possible to wash the water, and machine washing is possible depending on the fabric structure.

The woven polyester blended silk fabric is dyed in one bath at 95-98 ° C. temperature and atmospheric pressure using a disperse dye and an acid dye in an acidic atmosphere when the dye concentration is low in salt dyeing, and an acid when the dye concentration is relatively high. In the atmosphere, using a disperse dye, dye at a temperature of 95 ~ 98 ℃ and normal pressure, reduced washing, then dyed with a reactive dye in an alkaline atmosphere and washed with water. In printing, disperse dyes and acid dyes are mixed and in-printed, steam heated at a temperature of 100-110 ° C. for 20-40 minutes, and washed with a tenter after washing with water.

The present invention maintains the advantages of silky elegant luster, smooth feel, intimacy effect, natural feeling, and can improve the disadvantages of silk after washing, water shrinkage, stiff touch change and low wash fastness. Silk fabrics / textiles of the present invention can be obtained by dyeing and printing at room temperature and atmospheric pressure after using a modified polyester having a low initial tensile modulus and having a maximum dyeing at room temperature and atmospheric pressure. .

The polyester-containing silk fabrics / fabrics produced according to the present invention has a washing shrinkage rate of 3% or less and wash fastness of 3.5 or more, thus enabling water washing. Since it is possible to wash water, it can be used in various underwears including sweaters and pajamas.

The invention will be further elucidated by the following examples which are not intended to limit or limit the scope of the invention.

Example 1 Modified Polyester Yarn Preparation

Copolymerization polyester polymer was prepared by adding 3-15 wt% of polyethylene glycol (Polyethylene Glycol, PEG, thickening agent) having a molecular weight of 300 to 1500 to 80 wt% of terephthalic acid and 30 wt% of ethylene glycol during polyester polymerization. This polymer was produced from a modified polyester filament of 30 to 75 deniers at a spinning temperature of 270 to 280 캜 and a spinning speed of 3,500 to 4,200 m / min. The filaments were squeezed and dyed for 30 minutes with a disperse dye in a temperature range of 80 to 130 ° C., and then the equilibrium dyeing temperature was measured by measuring the K / S value (630 nm), which is a dyeing property. The properties of the modified polyester filaments and the properties of the dyeings are shown in Table 1. As shown in the table, it was observed that the equilibrium dyeing temperature and the initial tensile modulus vary greatly depending on the molecular weight and content of polyethylene glycol. In addition, a soft yarn of 700-1,100 kg / mm ² , similar to the initial tensile modulus of silk, was obtained.

Example 2: Fabrication of Modified Polyester-Containing Silk Fabrics

Silk 21 double, ie 42 denier filaments are twisted at 800 T / M to incline, and the modified polyester filament 70 denier of Example 1D is twisted at 800 T / M to be used as weft yarn. 5 Harness Satin was created. The warp density was 300 bones per inch and the weft density was 120 bones per inch. The weight of the fabric thus prepared was 84 grams per yard 44 inches wide and the polyester blend was 49%. The fabric was inlaid by mixing a disperse dye and an acid dye, heated at 105 ° C. for 20 minutes, and washed with water at 140 ° C. in a tenter after washing with water. The physical properties of this fabric are shown in Table 2. As a comparative example, the physical properties of the fabric in which five main fabrics woven with 100% silk were printed with acid dyes were compared in Table 2. As shown in Table 2, the knitted fabrics were machine washable and the touch and gloss were almost similar to 100% silk.

Example 3: Fabrication of Modified Polyester-Containing Silk Fabrics

Modified polyester filament of Example 1D, in which silk 2 in 2, ie 42 denier, filament was twisted at 2700 T / M, S-lined, Z-lined at 2: 2 Seventy deniers were twisted at 2500 T / M and used as weft yarns to weave the Chiffon Georgette. The warp density was 120 bones per inch and the weft density was 90 bones per inch. The weight of the fabric thus prepared was 53 grams per yard 44 inches wide and the polyester mix was 52%. The fabric was inlaid by mixing a disperse dye and an acid dye, and heated at 105 ° C. for 20 minutes, and washed with water at 140 ° C. in a tenter after washing with water. The physical properties of this fabric are shown in Table 3. As a comparative example, the physical properties of a fabric in which chiffon georgette woven from 100% silk was printed with an acid dye were compared in Table 3. As shown in the table, the fabric was machine washable, but the touch was slightly stiff compared to 100% silk, indicating that the softness fell.

Example 4: Fabrication of Modified Polyester-Containing Silk Fabrics

The silk 21 poly, i.e. 63 denier, filament and 40 denier modified polyester filaments of Example 1D were knitted with a 23 inch diameter, 28 Gauge circular knitting machine. At this time, the knit weight was 110 g / m ² and the polyester mixing ratio was 43%. The fabric was dyed at a temperature of 95 ° C. for 40 minutes in an acetic acid atmosphere having a bath ratio of 1:20 and pH 4.5 by mixing disperse dyes and acid dyes in a beam dyeing machine (Beam Dyeing Machine). The physical properties of this fabric are shown in Table 4. As shown in Table 4, the alternating knitted fabric was machine washable, and the appearance and touch were similar to 100% silk.

Example 5: Fabrication of Modified Polyester-Containing Silk Fabrics

The silk spun yarn 60 NM / 2, ie 300 denier, and the modified polyester filament 70 denier of Example 1D were combined in two and knitted into a 14 Gauge flat knitting machine. The fabric thus prepared had a weight of 220 g / m ² and a polyester mixing ratio of 30%. The fabric was dyed for 40 minutes at 98 ° C with a disperse dye in a Paddle Dyeing Machine, reducing agent (hydro) 2 gram / liter, refiner (Sunmorl RC 700L: Nikka Korea) 1 gram / liter, soda ash 2 Using gram / liter was reduced and washed at 80 ℃, 20 minutes. Reactive dye was added and dyed at 60 ° C. for 40 minutes, and then 2 grams / liter of detergent was washed with water. The physical properties of this fabric are shown in Table 5. As the silk content exceeded 70%, the shrinkage was increased, indicating that hand washing was necessary.

The present invention is to provide a silk fabric capable of water washing, and even after washing the water to provide a silk fabric capable of water washing to maintain the excellent advantages of the silk as it is excellent in morphological changes, feel, color fastness, etc., room temperature atmospheric pressure By using a polyester yarn that can be dyed in conjunction with a silk yarn can maintain the properties of the silk fiber even after washing, it has the effect of the invention to provide a polyester mixed silk garment capable of water washing.

Simple modifications and variations of the present invention can be readily used by those skilled in the art, and all such variations or modifications can be considered to be included within the scope of the present invention.

Claims (12)

Water-washable poly, characterized by weaving using 25 to 49% by weight modified polyester filament yarn and 75 to 51% by weight silk yarn copolymerized with 5 to 10% by weight polyethylene glycol having a molecular weight of 500 to 1,000. Process for the preparation of ester blended silk fabrics. 2. The method of claim 1, wherein the weaving step comprises weaving or weaving the polyester filament yarn and the silk yarn. The method of claim 1, further comprising the step of dyeing the woven polyester blended silk fabric using a disperse dye and an acid dye at an acidic atmosphere at a temperature of 95 to 98 ℃ and atmospheric pressure. Method for producing a polyester blend silk fabric possible. The method of claim 1, wherein the woven polyester blended silk fabrics are dyed at 95-98 ° C. and atmospheric pressure using a disperse dye in an acidic atmosphere, and then washed under reduced pressure, dyed with a reactive dye in an alkaline atmosphere, and washed with water. Method for producing a polyester mixed silk fabrics capable of water washing, further comprising the step of. The method of claim 1, wherein the woven polyester mixed silk fabric is inlaid by mixing a disperse dye and an acid dye, steam heating at a temperature of 100 to 110 ° C. for 20 to 40 minutes, and washing with water, followed by heat treatment in a tenter. Method for producing a polyester mixed silk fabric capable of washing water comprising a. Water washable characterized by woven using 25 to 49 wt% modified polyester filament yarn and 75 to 51 wt% silk yarn copolymerized with 5 to 10 wt% of polyethylene glycol having a molecular weight of 500 to 1,000 Polyester blend silk fabric. 7. The method of claim 6, wherein the modified polyester filament yarn has a maximum dyeing amount as a disperse dye at a temperature of less than 100 ℃ and atmospheric pressure, the initial tensile modulus of elasticity 700 to 1,100 kg / mm ² Polyester blend silk fabric available. 8. A water-launderable polyester blend silk fabric as claimed in claim 6 or 7, wherein the silk fabric is a fabric or a fabric. The method of claim 8, wherein the silk fabric has a shrinkage rate of less than 3% and washable polyester blend silk fabrics, characterized in that the wash fastness of 3.5 or more. The garment according to claim 6 or 7, wherein the garment is made of the polyester blended silk fabric. 10. The garment of claim 8, wherein the garment is made of said polyester blended silk fabric. 10. The garment of claim 9 made of said polyester blended silk fabric.