KR102650265B1 - Method for manufacturing fabric including blended yarn of cotton and polyester - Google Patents

Abstract

The present invention relates to a fabric manufacturing method, and more specifically, to manufacture fabric by knitting blended yarns of cotton and polyester, with improved weight, warmth, and soft touch, and further excellent durability and abrasion resistance properties. It relates to a method of manufacturing a fabric containing a blended yarn of cotton and polyester, which allows it to represent.

Description

{Method for manufacturing fabric including blended yarn of cotton and polyester}

The present invention relates to a fabric manufacturing method, and more specifically, to manufacture fabric by knitting blended yarns of cotton and polyester, with improved weight, warmth, and soft touch, and further excellent durability and abrasion resistance properties. It relates to a method of manufacturing a fabric containing a blended yarn of cotton and polyester, which allows it to represent.

Recently, in the textile industry, the casual clothing market and sports clothing market that pursue activity and convenience have grown rapidly due to the rapid increase in interest in well-being and health around the world. Accordingly, interest in and scale of textile and fabric manufacturing, which is a core industry in these markets, is gradually expanding, and technology development in this industry is taking place steadily.

In general, cotton materials have significant advantages such as warmth, breathability, moisture absorption, texture, feel, natural ingredients, and compatibility with functional substances, so the more cotton they contain, the better the product is. Considerable research and efforts are being made in each field.

However, in the case of pure cotton made of 100% cotton, not only is it difficult to maintain the fabric, such as the need for frequent ironing because the wrinkles are very severe, but it also shrinks or shrivels compared to its original state when washed (lack of shape stability). Because there are problems that arise, it is not easy to overcome them.

Accordingly, in order to compensate for the shortcomings of cotton, such as wrinkling and lack of shape stability, a mixed weaving method that mixes some synthetic fibers such as polyester with cotton material has been widely used.

However, it can be said that the conventional blended weaving method described above (mixing cotton with other chemical fibers) can overcome the shortcomings of pure cotton to some extent, but compared to the case of weaving using pure cotton (100% cotton), Thermal insulation, absorbency, texture, fit, and compatibility with natural functional materials are greatly reduced, which inevitably limits the high-performance and high-end quality of cloth.

Meanwhile, polyester fiber is the most widely used synthetic fiber. It is usually obtained by melting and spinning Poly(ethylene terephthalate) polymerized using PTA (pure terephthalic acid) and EG (ethylene glycol) as raw materials. Therefore, it is often called ‘PET fiber’. Such polyester is used as a general-purpose fiber suitable for various types of clothing, including woven fabrics, knitted fabrics, thick fabrics, and thin fabrics.

Polyester is heat-resistant, does not wrinkle easily, and maintains its shape well due to low elasticity. In addition, it absorbs almost no water, dries quickly after washing, does not deteriorate or discolor even after long-term exposure, is resistant to chemicals, and has a unique refreshing texture, so it can be said to be the most balanced fiber in terms of performance among synthetic fibers. .

However, because the hygroscopicity is very low, it generates static electricity, causes an unpleasant sensation of sticking to the body when worn, and makes it difficult for moisture in the body to dissipate to the outside air, making it feel muggy in the summer and cold in the winter. It also has the drawback of being difficult to dye and the colors are not vivid. Because of these shortcomings, blends with other fibers are more common than 100% polyester products.

Republic of Korea Patent Publication No. 10-2013-0062546

The present invention is intended to solve the above problems, and manufactures fabric by knitting blended yarns of cotton and polyester, but improves weight, warmth, and soft touch, and further exhibits excellent physical properties in terms of durability, abrasion resistance, etc. The aim is to provide a method for manufacturing fabric including blended yarn of cotton and polyester.

The above and other objects and advantages of the present invention will become apparent from the following description of preferred embodiments.

The above purpose is to produce a blended yarn containing cotton yarn and polyester yarn at a weight ratio of 55-70:30-45; Manufacturing a blended fabric by knitting the blended yarn; A dyeing process step of dyeing the blended fabric; And performing post-processing including bio-processing on the dyed fabric; It can be achieved by a fabric manufacturing method including a blended yarn of cotton and polyester.

The blended yarn is a first blended yarn in which the cotton yarn and polyester yarn are blended at a weight ratio of 70:30, or a second blended yarn in which the cotton yarn and polyester yarn are blended in a weight ratio of 55:45, or the cotton yarn and polyester yarn are blended in a weight ratio of 62:45. Characterized by a third blended yarn blended at a weight ratio of 38, the first blended yarn is knitted to produce a special cotton fabric, the second blended yarn is knitted to produce a special cotton raised fabric, and the third blended yarn is knitted. It is characterized by manufacturing terry fabric.

The dyeing is performed using a supercritical dyeing method using a supercritical fluid, and the supercritical dyeing method includes dissolving a dye in a supercritical fluid; Moving the supercritical fluid in which the dye is dissolved to the fabric to allow the dye to diffuse into the fabric; A supercritical dyeing step in which the diffused dye is adsorbed to the surface and inside of the fabric; and washing and drying the remaining dye after dyeing is completed; It is characterized by being carried out including.

According to the present invention, a fabric is manufactured by knitting blended yarns of cotton and polyester, and a blended fabric can be provided that improves weight, warmth, and soft touch, and exhibits excellent physical properties such as durability and abrasion resistance. .

However, the effects of the present invention are not limited to the effects mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the description below.

Figure 1 is a flow chart showing a fabric manufacturing method according to an embodiment of the present invention.

Hereinafter, the present invention will be described in detail with reference to embodiments of the present invention and drawings. These examples are merely presented as examples to explain the present invention in more detail, and it will be apparent to those skilled in the art that the scope of the present invention is not limited by these examples. .

Additionally, unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by a person skilled in the art to which the present invention pertains, and in case of conflict, this specification including definitions The description will take precedence.

In order to clearly explain the proposed invention in the drawings, parts unrelated to the description have been omitted, and similar reference numerals have been assigned to similar parts throughout the specification. And, when it is said that a part "includes" a certain component, this means that it does not exclude other components, but may further include other components, unless specifically stated to the contrary. Additionally, “unit” as used in the specification refers to a unit or block that performs a specific function.

The identification codes (first, second, etc.) for each step are used for convenience of explanation. The identification codes do not describe the order of each step, and each step does not clearly state a specific order in context. It may be carried out differently from the order specified above. That is, each step may be performed in the same order as specified, may be performed substantially simultaneously, or may be performed in the opposite order.

In the present invention and this specification, the mixed yarn is a yarn spun by mixing different types of fibers, and the cotton/polyester blended yarn of the present invention refers to a yarn mixed with cotton fibers and polyester fibers. Additionally, the blended yarn of the present invention may be a knit yarn.

At this time, the knit is a general term for a knitted fabric, and is a fabric in which a single strand of yarn is sequentially supplied to several needles in the horizontal direction of the fabric, and the loops formed are intertwined to form a knitted fabric. Such knits have excellent elasticity and do not wrinkle easily. It has good bulkiness, so it has good thermal insulation and breathability, and has great flexibility, so it has a soft feel.

One aspect of the present application includes manufacturing a blended yarn containing cotton yarn and polyester yarn at a weight ratio of 55 to 70:30 to 45; Manufacturing a blended fabric by knitting the blended yarn; A dyeing process step of dyeing the blended fabric; And performing post-processing including bio-processing on the dyed fabric; It provides a method for manufacturing fabric including blended yarn of cotton and polyester.

Hereinafter, implementation examples and examples of the present application will be described in detail. However, the disclosure may not be limited to these implementations and examples.

Figure 1 is a flow chart showing a fabric manufacturing method according to an embodiment of the present invention.

Referring to FIG. 1, first, in step S1, a blended yarn containing cotton yarn and polyester (polyester) yarn can be manufactured.

The blended yarn combines the soft touch and hygroscopicity of cotton and the high elastic recovery rate and shape stability of polyester, thereby suppressing the wrinkle-prone nature of cotton and the tendency of polyester to generate static electricity, making it soft to the touch like cotton. It makes it possible to manufacture blended fabrics that have various advantages such as being soft, not easily wrinkled, and drying easily when washed.

The cotton yarn may include CM yarn (Combed yarn). CM yarn is a fiber that has excellent hygroscopicity and is human-friendly, and can provide excellent touch when included in the cotton and polyester blended yarn of the present invention.

The polyester yarn may be a polyester filament yarn, specifically, a polyester filament yarn drawn yarn. The polyester yarn may have a fineness of 60 to 100 denier.

The cotton yarn and polyester yarn may be blended at a weight ratio of 55 to 70:30 to 45.

For example, the first blended yarn can be manufactured by mixing the cotton yarn and polyester yarn at a weight ratio of 70:30.

As another example, the cotton yarn and polyester yarn can be mixed at a weight ratio of 55:45 to produce a second blended yarn.

As another example, the third blended yarn can be manufactured by mixing the cotton yarn and polyester yarn at a weight ratio of 62:38.

The blended yarn of cotton yarn and polyester yarn may have a total fineness of 10 to 60. If the total fineness of the blended yarn is less than 10 cotton count, the weight of the fabric may become too high and there may be a problem that it cannot be applied for clothing. If the total fineness exceeds 60 cotton count, the feel of the fabric becomes soft, but the mechanical strength decreases. There are concerns that it may decline.

The specific method for producing the blended yarn of cotton yarn and polyester yarn is not particularly limited, and may follow a known method for producing a conventional blended yarn.

Next, in step S2, the blended yarn can be knitted to produce a blended fabric.

The knitting may be performed using a knitting machine commonly used to produce fabric specialized for high weight, for example, a circular knitting machine or a flat knitting machine. The knitting needles provided in the knitting machine may be special knitting needles made in Germany. In the prior art, needles commonly used in knitting have a loop on only one side, but the special knitting needle has loops on both sides, making it possible to manufacture fabric capable of expressing high density.

The special knitting needle of the present invention can increase weight and create a tight density, and can minimize many defects such as fabric spreading and yarn breakage that can occur when knitting heavy fabric with conventional needles.

The special knitting needles can have a knitting stitch count of 2,400 or more. As a result, a higher sense of weight and touch can be provided.

Meanwhile, the manufactured blended fabric can be knitted by selecting the blended yarn according to the specific purpose and use for using the fabric.

For example, the fabric manufactured by knitting the first blended yarn in which the cotton yarn and polyester yarn are blended at a weight ratio of 70:30 is preferably used as a special cotton fabric in the future. Special cotton refers to a fabric produced by knitting the front and back sides equally.

The fabric manufactured by knitting the first blended yarn blended at the above-mentioned weight ratio can have a firmer texture and a softer touch compared to conventional special cotton. The specific knitting method for producing the special cotton fabric may follow conventional techniques.

As another example, the fabric manufactured by knitting the second blended yarn in which the cotton yarn and polyester yarn are blended at a weight ratio of 55:45 is preferably used as a fabric for raising special cotton in the future.

Special-sided brushing refers to the process of raising the upper and lower yarns using a brush roller, excluding the connecting yarn located in the middle of a fabric made with three strands of yarn and connecting the upper and lower yarns. It refers to a double-sided brushed fabric that has been piled.

At this time, the second blended yarn blended at the above-mentioned weight ratio is used, the connecting yarn located in the middle is thicker than the conventional yarn to add weight, and the raising operation is performed in one step, making it much more effective than the conventional brushed fabric. It provides a thick texture and thickness to provide warmth, coziness, and a soft touch.

In addition, conventional techniques can be followed for the specific knitting method for manufacturing the special cotton raised fabric and the raising work to be performed in post-processing described later.

As another example, the fabric manufactured by knitting the third blended yarn in which cotton yarn and polyester yarn are blended at a weight ratio of 62:38 is preferably used as a terry fabric.

TERRY fabric is commonly called Juri (or Juri) and is mainly used for hoodies and sweatshirts due to its excellent sweat absorption and elasticity properties.

The terry fabric manufactured by knitting the third blended yarn blended at the above-mentioned weight ratio can exhibit appropriate thickness and a firm touch by increasing the weight and knitting with more stitches compared to the conventional terry fabric. In addition, compared to conventional cotton/poly terry fabrics, sweat discharge characteristics and drying effect after washing can be further improved.

In some cases, the terry fabric may be manufactured by further including, for example, spandex yarn in addition to the third blended yarn described above.

Conventional techniques can be followed for the specific knitting method for manufacturing the terry fabric and post-processing, which will be described later.

Next, in step S3, a dyeing process for dyeing the blended fabric can be performed. The dyeing is intended to form colors and patterns in the blended fabric, and can be performed by selecting a commonly used known technique according to the specific type of fabric.

For example, various dyeing methods can be applied, such as dip dyeing, which applies heat in a dyeing machine to uniformly color the entire surface of the fabric, or printing, which freely expresses desired colors and patterns by mixing dyes or pigments, but is limited to this. That is not the case.

Preferably, the dyeing may be performed using a bio-dyeing process. As a result, it is possible to effectively improve the harmfulness caused by chemicals in conventional dyes and environmental problems caused by residual wastewater after dyeing.

The bio-dyeing process may include, for example, a supercritical dyeing method using a supercritical fluid. Supercritical dyeing is a dyeing technique that uses a supercritical fluid existing in a region above critical temperature and critical pressure as a solvent, and the supercritical fluid may be carbon dioxide in a supercritical state.

The supercritical dyeing method uses carbon dioxide fluid instead of the water and toxic organic solvents used in large quantities in conventional dyeing, making dyeing possible without generating wastewater, making it environmentally friendly. In addition, due to the high solubility of supercritical fluid, the dye is easily dissolved without a dispersant, so the process steps can be reduced, and further, it can contribute to improving productivity by securing price competitiveness.

The supercritical dyeing method includes dissolving dye in a supercritical fluid; Moving the supercritical fluid in which the dye is dissolved to the fabric to allow the dye to diffuse into the fabric; A supercritical dyeing step in which the diffused dye is adsorbed to the surface and inside of the fabric; and washing and drying the remaining dye after dyeing is completed; It can be performed including.

At this time, the washing does not use water, so there is no wastewater treatment process, and the dye can be recycled and used, so it is environmentally friendly, and the drying can show an energy saving effect due to the low drying temperature of carbon dioxide.

The supercritical dyeing step is preferably performed, for example, at 110 to 125°C for 60 to 100 minutes, specifically, 60 to 90 minutes, and more specifically, 65 to 85 minutes. If the above-mentioned dyeing time is less than 60 minutes, there is a risk that the dyeing efficiency may be lowered due to the small amount of CO ₂ contact.

In addition, known techniques commonly used to perform the supercritical staining method may be followed.

Meanwhile, in order to increase the efficiency of the dyeing, the usual pre- and post-treatment processes performed before and after the dyeing process, such as scouring, tentering, padding, heat treatment and drying, and washing, are performed according to the characteristics of each fabric. You can choose to include more depending on your needs.

For example, scouring may be performed before the dyeing process.

The scouring may be performed by treating the blended fabric with a pretreatment solution containing a scouring agent.

The scouring agent may include at least one selected from the group consisting of surfactant, softanol, tridecyl alcohol, and chelating agent. The surfactant may be a nonionic surfactant or an anionic surfactant. The nonionic surfactant includes, but is not limited to, polyethylene glycol and fatty acid esters of polyhydric alcohols. The anionic surfactant includes, but is not limited to, carboxylate, sulfuric acid ester, sulfonate, and phosphoric acid ester. As the chelating agent, phosphonic acid, polyacrylate, etc., which are complex agents having at least two functional groups, may be used, but are not limited thereto.

If necessary, the pretreatment solution may further include at least one selected from the group consisting of an emulsifier, a leveling penetrant, a de-emulsifier, and a carrier dispersant to further improve scouring and dyeing properties.

Preferably, the refining may be performed by a bio-refining process using enzymes.

The bio-refining process using enzymes is environmentally friendly because it uses natural substances called enzymes, has excellent biodegradability, reduces wastewater load, and does not use harmful chemicals.

After the refining, ultrasonic pretreatment can be performed. The ultrasonic pretreatment uses waves between 10 and 30 KHz to more effectively remove impurities that appear during the refining process, while reducing water use and time used in the refining process.

For example, the ultrasonic pretreatment is preferably performed for 5 to 15 seconds.

Next, in step S4, post-processing including bio-processing can be performed on the dyed blended fabric.

The bio-processing may be used to remove fine hair from dyed blended fabrics to maximize a softer, firmer touch.

The bio-processing may be enzyme processing that reduces fluff or fine hair on the fabric surface by adding enzymes to the fabric and activating the enzymes while adjusting a certain temperature and pH. The enzymatic processing can be performed according to commonly known techniques.

The post-processing may further include softener processing, brushing processing, water-repellent processing, etc.

The softener processing may be intended to not only provide flexibility to the fabric through the softener, but also remove remaining oil components, and further implement hygroscopicity, anti-static properties, and waterproof properties. The softener may be used differently as a common ingredient depending on the type of fabric.

The brushing process can be performed by processing brushing on the surface in contact with the wearer's skin, and through this, the feeling of touch on the skin can be improved. Regarding the specific method of the above brushing processing, conventional techniques may be followed.

The water repellent treatment can be performed by treating the blended fabric with a water repellent agent. For example, the water repellent finishing agent preferably includes a fluorine water repellent, and considering its safety to the human body, it is more preferable to include C6 fluorine-based water repellent, which is an eco-friendly water repellent that is harmless to the human body.

In addition, in terms of improving the touch sensation of the blended fabric, the water repellent agent may further include a silicone water repellent agent. When the water repellent agent includes both a fluorine water repellent and a silicone water repellent, the mixing ratio of the fluorine water repellent and the silicone water repellent may be 1:0.2 to 0.4 by weight per liter, but is not limited thereto.

In this specification, only a few examples of various embodiments performed by the present inventors are described, but the technical idea of the present invention is not limited or limited thereto, and of course, it can be modified and implemented in various ways by those skilled in the art.

Claims (3)

Manufacturing a blended yarn containing cotton yarn and polyester yarn at a weight ratio of 55 to 70:30 to 45;
Manufacturing a blended fabric by knitting the blended yarn;
A dyeing process step of dyeing the blended fabric; and
Post-processing the dyed fabric including bio-processing; Including,
The blended yarn includes a first blended yarn in which the cotton yarn and polyester yarn are blended at a weight ratio of 70:30, a second blended yarn in which the cotton yarn and polyester yarn are blended in a weight ratio of 55:45, and a second blended yarn in which the cotton yarn and polyester yarn are blended in a weight ratio of 62:38. It is characterized as a third blend yarn blended by weight ratio,
The first blended yarn is knitted to produce a special cotton fabric, the second blended yarn is knitted to produce a special cotton raised fabric, and the third blended yarn is knitted to produce a terry fabric,
The cotton yarn is a CM yarn (Combed yarn), the polyester yarn is a polyester filament yarn drawn yarn having a fineness of 60 to 100 denier, and the first blended yarn, the second blended yarn, and the third blended yarn are Each is characterized by having a total fineness of 10 to 60 cotton count (Nec),
The knitting is characterized by using special knitting needles with a knitting stitch count of 2,400 or more,
The dyeing is performed using a supercritical dyeing method using a supercritical fluid, and the supercritical dyeing method includes dissolving a dye in a supercritical fluid; Moving the supercritical fluid in which the dye is dissolved to the fabric to allow the dye to diffuse into the fabric; A supercritical dyeing step in which the diffused dye is adsorbed to the surface and inside of the fabric; and washing and drying the remaining dye after dyeing is completed; Including,
A fabric manufacturing method comprising a blended yarn of cotton and polyester, characterized in that the supercritical dyeing step is performed at 110 to 125 ° C. for 65 to 85 minutes. delete delete