KR20130050140A - Method for preparing environmental friendly fabric using recycle pet fiber for car seat - Google Patents

Abstract

PURPOSE: A manufacturing method of woven fabric for environmentally-friendly vehicle seats using recycle PET (polyethylene terephthalate) yarn is provided to enhance rebound resilience and woven fabric manufacture similar to natural suede which has soft feeling. CONSTITUTION: A manufacturing method of woven fabric for environmentally-friendly vehicle seats using recycle PET yarn comprises the following steps: weaving by spin-drawing using one or more of polyester yarns, air textured yarn and recycle PET high multi-yarn as a wrap thread and using one or more of low-melting fiber, recycle PET high multi-yarn, and air textured yarn as weft thread; extracting elution compounds inside the weaved fabric woven; napping or buffing surface of the woven fabric; and coating and drying rear side of the napped or buffed woven fabric with urethane resin composition.

Description

Method for preparing environmental friendly fabric using recycle PET fiber for car seat}

The present invention is a recycled PET yarn manufactured by coating a urethane resin composition on the back side of a woven fabric made of biaxially blended mixed yarn, low melting point yarn (LM, low-melting fiber) and recycled PET high multifilment. It relates to a method for manufacturing environmentally friendly car seat fabric using.

Efforts to reduce GHG emissions for the preservation of the global environment are being made policy-driven, especially in advanced countries in the United States, and international environmental regulations in response to climate change have expanded and evolved into economic problems, leading to national competitiveness.

Accordingly, global companies are interested in eco-product production and eco-marketing in order to enhance the national image and brand image by placing emphasis on environmental management. In developed countries such as Europe, recycled materials are mandatory to use more than 20% of automobile interior materials, and it is recommended to review and use textile materials using environmentally friendly methods.

In a situation where fundamental measures against the weakness of our economy due to energy and resource depletion crisis are needed, it is time for the textile industry to enter the eco-friendly green fiber industry market led by developed countries with green textile as a new growth engine.

Global textile companies as well as fashion brands are focusing on eco-friendly products, with the expansion of the purchase of various textile products reflecting the LOHAS trend of consumers. It is launching recycled materials and biodegradable fibers one after another, and is entering a competition for preoccupation of the eco-friendly textile market in earnest.

Meanwhile, various proposals for recycling methods of PET, which are widely used among synthetic resins, have been made, and the methods can be largely classified as follows.

The chemical recycling method is to chemically decompose waste PET bottles and use them as chemical raw materials. The recycling method is semipermanently and is an optimal method in a cyclical economic society, but it is difficult in terms of technology and cost. The material recycling method is the melting and regeneration of homogeneous or dissimilar materials after selection, and is an optimal method in terms of cost, but there is a practical problem that thorough selection is required. In addition, thermal recycling is reused as thermal energy, and it is not recommended as a recycling method due to the inability to repeatedly use resources and to burn and generate carbon dioxide.

On the other hand, among the PET waste, the problem of handling a bulky PET bottle relative to its weight is becoming more serious. At present, the recycling method of the PET bottle is a material recycling method, and the recycling of the PET bottle recovered after the end of use is carried out only to form short fibers (staple yarn). It is impossible to use in PET filament (filament yarn) due to the deterioration of processability and physical properties and color discoloration and dyeing unevenness.

In addition, the discarded PET bottles generally have a problem that it is difficult to dispose of the labels and caps of various plastic materials such as polypropylene, polyethylene, polyvinyl chloride, and the like, various adhesives, pigments, dyes, and the like.

Domestic Patent No. 10-1048082 Domestic Patent No. 10-0457680

In order to solve the problems of the prior art as described above, the present invention is to provide a method for manufacturing an environmentally friendly car seat fabric using recycled PET yarn capable of developing a LOHAS (LOHAS) car seat by applying a recycled material to the car seat. For the purpose of

In addition, an object of the present invention is to provide a method for producing an environmentally friendly vehicle seat fabric using recycled PET yarn capable of producing a suede type fabric having a texture and appearance similar to that of natural suede.

In addition, an object of the present invention is to provide a method for producing an environmentally friendly car seat fabric using recycled PET yarn having excellent resilience effect, moisture permeability and breathability, and showing a soft feel.

In order to achieve the above object, the present invention uses any one or more selected from a ramp polyester yarn, di-shrink blended yarn and recycled PET multi-threaded yarn, weft low-melting yarn (LM, low-melting fiber), recycled PET Spin-draw and weaving using any one or more selected from a high multi-threaded yarn and a biaxial blended yarn; Extracting the elution component in the woven fabric; Brushing or buffing the surface of the fabric; And coating and drying a urethane resin composition on the back side of the brushed or buffed fabric. The method provides a method for manufacturing an environmentally friendly car seat fabric using a recycled PET yarn.

The urethane resin composition is an acrylic copolymer mixed with 2-ethyl acrylate, n-butyl acrylate, methyl methacrylate and acrylic acid, polyoxyethylene tridecyl ether, polyoxyethylene alkyl aryl ester, and Ion-exchanged water.

In particular, the urethane composition, the urethane resin composition is preferably coated so that the coating amount is 10 ~ 60g / ㎡ in the wet state per fabric m 2.

According to the present invention, by applying a recycling material to a car seat, it is possible to develop an environmentally friendly LOHAS car seat, and has a natural feel and a suede type having a dobby or jacquard pattern with a feel and appearance similar to that of natural suede. Fabric manufacturing is possible. In addition, the fabric for automobile seats of the present invention is excellent in the resilient elasticity effect, the moisture permeability and breathability is expressed to show a soft texture, suitable for use in automobile seats.

1 is a photograph of fabrics for automobile seats manufactured according to one embodiment of the present invention.
2 is a photograph of a car seat manufactured using a fabric for a car seat manufactured according to an embodiment of the present invention.

Hereinafter, the present invention will be described in detail.

The present invention uses a recycled PET fiber, biaxially blended yarn, and a low melting point yarn (LM, low-melting fiber) that does not require a coating to induce a natural feel, and coating during post-processing to give a texture and appearance similar to natural suede As an alternative, the urethane resin composition was used to develop environmentally friendly fabrics for LOHAS car seats.

Of course, the vehicle seat fabric of the present invention can be used both inside the vehicle, that is, the portion where the fabric is used for the seat or interior of the vehicle interior. Although the present invention is described in detail with reference to an example in which the fabric for an automobile seat is applied to an automobile seat, the scope of the present invention is not limited thereto.

Hereinafter will be described in detail with respect to the manufacturing method of the environment-friendly car seat fabric using the recycled PET yarn of the present invention.

First, the fabric for automobile seats of the present invention is recycled PET high multifilment (single yarn), biaxially blended blended yarn, low melting point yarn (LM company, low-melting fiber) and general polyester yarn alone or in combination of two as a warp or weft yarn Weaving by using

Specifically, it is preferable to use two combinations of polyester yarn and di-shrink blended yarn, or to use recycled PET high-multi yarn alone, and as the weft yarn, low melting point yarn (LM, low-melting fiber) and recycled PET high multi yarn. It is good to use two combinations of yarns or two combinations of low-melting fiber (LM) and low shrink melt blended yarns.

At this time, the polyester yarn used as the warp yarn can be used a conventional polyester yarn, as a biaxial blended yarn composite composite polyester polymer and a usable polyester polymer by a conventional method to produce an eluted polyester composite yarn False twisting can be used by air entanglement with high shrink polyester yarn.

In addition, the recycled PET high multi yarn is a recycled fiber manufactured by recycling waste PET bottles, wet grinding and drying the PET bottle after the pre-treatment to form a PET flake, and then wet grinding and drying the PET powder formed by It can be melted, molded into pellets, and produced by melt spinning. Low melting point yarn is a conventional low melting fiber (LM company, low melting fiber) used in the art, refers to a yarn that is melted and molded at a low temperature of 130 ~ 180 ℃.

In the present invention, by using a mixture of the yarn as described above can be produced a fabric having a natural and soft texture, such as natural suede, may be formed by selecting a dobby or jacquard pattern as needed.

In addition, in the present invention, by using the yarn as the warp or weft yarn as described above, weaving according to a conventional method, it is apparent that the weaving method does not limit the scope of the present invention.

Next, the dough of the woven fabric is refined and the elution component in the dough is extracted to minimize the yarn. In this case, the refining and extraction may be performed by treating 1 ~ 10% by weight of caustic soda in a rotary washer according to a conventional method carried out in the art.

After extracting the elution component as described above, the microfiber dough is dried and heat treated at 150 to 190 ° C, preferably 170 ° C, to give shape stability, and the surface of the fabric is brushed or buffed to cut a part of the microfiber. Raise up. At this time, the brushing treatment is treated 2 to 10 times with a conventional brushing machine, it is good to use a sandpaper 100-240 times when buffing treatment.

After foaming or buffing the surface of the fabric as described above, the urethane resin composition is coated on the back of the fabric.

In general, the coating agent used in the fabric is an acrylic emulsion polyurethane resin, which has a problem in that it is low in breathability and shortens the life and creates a harmful environment in manufacturing products for interior and living products.

Therefore, in the present invention, by using a urethane resin composition as described below in place of the coating agent used in the conventional post-processing to extend the life of the product, prevent the composition of the harmful environment, while having a texture similar to the natural suede excellent moisture permeability and breathability To prepare.

The urethane resin composition used in the present invention is an acrylic copolymer of 2-ethyl acrylate, n-butyl acrylate, methyl methacrylate and acrylic acid, and polyoxyethylene tridecyl ether. , Polyoxyethylene alkyl aryl esters and ion exchanged water.

Specifically, the urethane resin composition is a mixture of 15 to 20% by weight of 2-ethyl acrylate, 15 to 20% by weight of n-butyl acrylate, 5 to 10% by weight of methyl methacrylate and 2 to 4% by weight of acrylic acid 35 to 55% by weight of copolymer, 2 to 4% by weight of polyoxyethylene tridecyl ether, 2 to 4% by weight of polyoxyethylene alkyl aryl ester and residual amount of ion-exchanged water. The above components are mixed and stirred for 1 hour or more so that the concentration of solids in the composition is 40 ㅁ 1%, the viscosity is 100 cps or less, pH 6.5-7.5 or so.

As the coating method of the urethane resin composition, both dry coating or wet coating may be used. In addition, the coating amount of the urethane resin composition can be appropriately adjusted according to the use, design, thickness of the fabric, etc. of the final product to be manufactured.

As a specific example, the prepared urethane resin composition is evenly applied to the back side of the fabric using a dry coating method, using a knife having a thickness of 0.3 to 3.0 mm in a coater in a wet state per square meter of fabric 10 Coating is carried out to ˜60 g / m 2. If the coating amount is less than 10g / ㎡ the physical property improvement effect of the product is weak, and if it exceeds 60g / ㎡ the suede effect is not sufficiently expressed and the touch can be stiff.

The urethane resin coated fabric is then dried and cured. At this time, the drying temperature is 80 ~ 180 ℃, the drying speed is 5 ~ 65m / min using a dryer to cure the urethane resin applied to the fabric to form a coating layer on the back of the fabric. At this time, when the drying temperature and the drying speed is out of the above range, the coating of the urethane resin is not smoothly made, and thus the desired effect cannot be obtained.

In addition, in the case of coating the urethane resin by the wet coating method, a hydrophilization treatment is performed by immersing a fabric coated with the urethane resin in water, a hydrophilizing agent, or a mixture thereof as needed or shortly before the coating for ease of coating. You may.

As described above, when the urethane resin is coated on the back side of the fabric, the woven fabric prevents the bleeding and can be easily carried out afterwards, and the yarn is not easily dropped by friction or brushing. In addition, the strength deviation between the longitudinal direction and the width direction of the fabric is reduced, making it suitable for use in automobile seats, and also having excellent rebound elasticity effect, expressing moisture permeability and breathability, to give a smooth and moist texture.

Fabrics for automobile seats of the present invention prepared as described above may have a touch and appearance similar to natural suede, and may be manufactured as a fabric having a dobby or jacquard pattern as needed. In addition, the car seat fabric completed through the process as described above may be subjected to the subsequent step of subsequent dyeing, gloss, embossing, etc., or may be subjected to the subsequent step after brushing or buffing once again. .

As described above, the fabric for automobile seats manufactured according to the present invention is environmentally friendly using recycled PET material, and it is possible to manufacture a suede type fabric having a jacquard pattern similar to natural suede, and thus has excellent touch and appearance. In addition, the resilient elasticity effect is excellent, the moisture permeability and breathability are expressed, and it shows a soft texture, so it is very suitable to be used as an alternative material for interior materials or seats for automobile interiors, and is also applied to shoes, clothing, gloves, furniture, etc. It is also appropriate.

Hereinafter, the present invention will be described in more detail with reference to examples. These embodiments are for purposes of illustration only and are not intended to limit the scope of protection of the present invention.

Recycled PET high-multi yarn, di-shrink blended yarn, and low melting point yarn used in the following examples were prepared as follows.

(Recycled PET High Multi Yarn Ready)

The collected PET bottles were pretreated by removing impurities from the collected PET bottles, and the pretreated PET bottles were crushed by a wet mill to form PET flakes having an average length of 5 mm. Then, after separating and removing the foreign matter from the PET flakes, the PET flakes were pulverized by a wet grinder to form a PET powder having an average length of 0.1 mm, and then separated and removed from the PET powder. The PET powder was melted at 295 ° C. in an extruder, followed by extrusion molding and cooling to form a PET recycled resin. After molding the PET recycled resin into a pellet form, using an 8-leaf cross-section spinneret, C is 0.08mm, A / B is 1.6, D / C is 5, θ 60 ㅀ, spinneret hole length is 0.5mm The number of filaments was 36, and the discharge amount was adjusted so that the single yarn fineness of the final drawn yarn was 2 denier, and was melt spun at a spinning speed of 4,500 m / min.

(Isu livestock blending yarn)

General polyester polymer and usable polyester polymer are mixed in a weight ratio of 7.5: 2.5 in a 36-inch circular knitting machine, and 100 denier / 48 filament-dissolving polyester composite yarn having a mono fineness of 0.2 denier is mixed at a speed of 4,500 m / min. Elution type polyester composite yarn produced by spinning and combusting according to a conventional method, 40 denier / 12 filament high shrink polyester filament yarn having 30% of heat shrinkage (100w), and air entangled with entanglement 90 / m Ready.

(Low melting point company)

Usually, a low melting point yarn melted and molded at a low temperature of 130 to 180 ° C was used.

Example 1

A fabric dough of 200 g / yd was prepared by radially direct stretching two polyesters of an inclined polyester and two shrinking blended yarns 300d, and two low melting point yarns 300D and a recycled PET high multi yarn 450D. Subsequently, the produced fabric dough was refined in a rotary washer at a temperature of 120 ° C. for 40 minutes, and 1% by weight of caustic soda was bio-processed at 120 ° C. for 30 minutes to make the fibers extremely fine.

Subsequently, the bio-treated paper was dry-heated at a temperature of 170 ° C. to extract the elution component, and then subjected to buffing by applying mesh # 180 sandpaper. Then, 44% by weight of the acrylic copolymer mixed with 15% by weight of 2-ethyl acrylate, 15% by weight of n-butyl acrylate, 10% by weight of methyl methacrylate and 4% by weight of acrylic acid, nonylphenol polyethylene oxide The urethane resin composition, which was stirred for 1 hour or more by mixing 2% by weight, 4% by weight of polyoxyethylene alkyl aryl ester and the balance of ion-exchanged water, was dry coated on the back side of the buffing fabric. At this time, using a knife (knife) of 0.3 ~ 3.0mm thickness was coated so that the coating amount is 50g / ㎡ in the wet state per ㎡ fabric. Then, the urethane resin-coated fabric was dried using a dryer at a temperature of 150 ° C. at a rate of 30 m / min.

After coating the urethane resin, it was dyed in a high-pressure rapid dyeing machine with a disperse dye, and after the water repellent and antistatic agent treatment process was produced car fabric for car seat of the present invention.

Examples 2-10

To carry out in the same manner as in Example 1 using the conditions shown in Table 1.

The fabric for automobile seats of the present invention prepared in Examples 1 to 10 is shown in FIG.

As shown in Figure 1, the car seat fabrics of the present invention prepared in Examples 1 to 10 it was confirmed that dobby (jabby) and jacquard (jaquard) pattern similar to natural suede was formed.

In addition, an automobile seat was manufactured according to a conventional method using the fabric for automobile seat manufactured in Example 1. As shown in Fig. 2, the car seat manufactured by using the fabric for car seat manufactured according to the present invention had a soft feel while forming a pattern similar to natural suede.

In addition, by using the fabric for automobile seats prepared in Examples 1 to 10 of the present invention, the appearance, wear strength, moisture permeability and breathability were measured, and the results are shown in Table 2 below.

At this time, the wear strength was worn until a hole was formed in the roll which rotates the woven suede (sample) by the Taber method, and the roll rotation speed up to this time was measured. Moisture permeability was measured by JIS L 1099 A-1 method (CaCl ₂ method). The moisture-permeable unit is g / m 2 .24hr, and the breathable unit is cc / cm 2 / sec.

division Exterior Texture Wear strength Breathable Breathability Example 1 Dobby Good 29,000 8.325 0.62 Example 2 Dobby Good 28,000 9.115 0.57 Example 3 Jacquard Good 30,000 9.103 0.53 Example 4 Jacquard Good 31,000 9.452 0.60 Example 5 Jacquard Good 30,000 8.650 0.50 Example 6 Dobby Good 28,000 9.440 0.71 Example 7 Dobby Good 29,000 9.650 0.68 Example 8 Jacquard Good 32,000 9.110 0.65 Example 9 Jacquard Good 35,000 8.956 0.70 Example 10 Jacquard Good 33,000 8.687 0.66

As shown in Table 2, the fabrics for automobile seats of Examples 1 to 10 manufactured according to the present invention not only have a dobby or jacquard pattern similar to natural suede, but also have a soft and natural feel. It was confirmed that it has excellent wear strength, moisture permeability and breathability.

Although the present invention has been described as the preferred embodiment mentioned above, it is possible to make various modifications or variations without departing from the spirit and scope of the invention. The appended claims also cover such modifications and variations as fall within the spirit of the invention.

Claims (7)

Any one or more selected from a ramp polyester yarn, bishrink blended yarn, and recycled PET high-multi yarn, and selected as a weft yarn of low melting point yarn Spin-draw and weaving using one or more;
Extracting the elution component in the woven fabric;
Brushing or buffing the surface of the fabric; And
Coating and drying a urethane resin composition on the back side of the brushed or buffed fabric;
Method for producing an environmentally friendly car seat fabric using recycled PET yarn, characterized in that it comprises a. The method of claim 1,
The recycled PET high multi yarn wet grinding and drying the PET bottle after the pretreatment process to form a PET flake; Wet grinding and drying the PET flakes to form a PET powder; Melting the PET powder to form a pellet; And melt spinning the PET powder in the form of pellets. The method of claim 1,
The polyester yarn has a single yarn fineness of 0.1 ~ 0.5 denier, the number of single yarns 70 or more, characterized in that the manufacturing method of environmentally friendly car seat fabrics using recycled PET yarn. The method of claim 1,
The di-shrink blended yarn is a method for producing an environmentally friendly car seat fabric using recycled PET yarn, characterized in that it is produced by air entangled polyester composite yarn and high shrink polyester yarn. The method of claim 1,
The urethane resin composition is an acrylic copolymer 35 of 15 to 20% by weight of 2-ethyl acrylate, 15 to 20% by weight of n-butyl acrylate, 5 to 10% by weight of methyl methacrylate, and 2 to 4% by weight of acrylic acid. Eco-friendly car seat using recycled PET yarn, comprising: 55 wt%, 2-4 wt% polyoxyethylene tridecyl ether, 2-4 wt% polyoxyethylene alkyl aryl ester, and residual ion-exchanged water Method for producing a dragon fabric. The method of claim 1,
The urethane resin composition is a method of producing an environmentally-friendly car seat fabric using recycled PET yarn, characterized in that the coating amount is coated in a wet state per ㎡ fabrics 10 ~ 60g / ㎡. The method of claim 1,
Drying of the urethane resin composition is a method for producing an environmentally friendly car seat fabric using recycled PET yarn, characterized in that at a temperature of 80 ~ 180 ℃ 5 ~ 65m / Min.

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