KR101699131B1 - Silicone coating yarn, manufacturing method thereof, woven fabrics therefrom and coating composition used therefor - Google Patents

Abstract

The present invention relates to a core yarn; And a silicone coated portion coated on the outside of the core yarn, wherein the coated yarn is made of a coating composition containing silicon to improve the antifouling property, the water repellency, the weather resistance, and the light resistance of the coated yarn and the woven fabric It is effective.

Description

TECHNICAL FIELD [0001] The present invention relates to a silicone-coated yarn, a method for producing the same, a woven fabric thereof, and a coating composition used therefor. BACKGROUND ART [0002]

The present invention relates to a silicone-coated yarn, a method for producing the same, a woven fabric using the same, and a coating composition used for the silicone-coated yarn, and more particularly, to a silicone-coated yarn excellent in antifouling property, water repellency, light resistance and weather resistance.

Techniques for fabricating coated yarns and fabricating woven fabrics using the same have been developed in various ways.

Most commonly, as a core yarn for producing a coated yarn, a yarn core layer is formed mainly using polyethylene terephthalate (PET), and a facility technology for allowing the core yarn applied to the core yarn to go to the center of the coated yarn Development and extrusion processing technology are being studied. As a material to be applied to the coating layer as the coating layer, a polyolefin (polyvinyl chloride) material, such as polyvinyl chloride (PVC), a polyurethane resin, a polyethylene resin, a polyethylene copolymer resin, a polypropylene resin, a polypropylene copolymer resin, Based resins have been used. Various materials have been studied to improve the adhesion between the coating yarns and the bonding between different fabrics by varying the materials of the coating layers.

For example, in order to improve the adhesion of coated yarn, a technique for producing a coating yarn using a hot-melt polyurethane resin, ethylene-vinyl acetate (EVA) based coating material has been developed.

Various researches have been conducted on the coating yarn including the flame retardant component or the glass beads in the resin used in the coating layer and the technique capable of firing the flame retardancy and the retroreflective characteristics of the coated yarn and the fabric woven therefrom ought.

For example, fibers made by extruding and coating polyvinyl chloride (PVC) on a polyester yarn are excellent in elasticity, wrinkle-free, shape-wise, antimicrobial and various colors are applied, and blinds, Or fibers for living, deco, electronic products and furniture.

However, various developments have been made on such coating yarns, but conventional fiber yarns are difficult to achieve anti-fouling and water repellency. Especially, water repellency is difficult due to thermal properties. In other words, conventional fiber yarn does not meet the demands of various markets.

Korean Patent Laid-Open Publication No. 2005-79896 discloses a method for producing a woven fabric by coating a coating agent containing a plasticizer and a flame retardant together with a polymer material such as PVC on the outer surface of a glass fiber or a polyester fiber.

PVC coated fibers are excellent in flame retardancy, flame retardancy, antimicrobial properties, tensile strength and elongation, but they are difficult to separate between PET yarn and PVC coating layer when extrusion coating, . Also, when PVC coated fiber is burned, toxic harmful substances may occur due to reaction between chlorine ion present in PVC and phthalate plasticizer present in coating agent.

Disclosure of Invention Technical Problem [8] The present invention has been proposed in order to solve the above-mentioned problems, and it is an object of the present invention to provide a silicone coated yarn excellent in antifouling property, water repellency, light resistance and weather resistance and a manufacturing method thereof.

In order to solve the above-mentioned technical problems, the silicone coating yarn of the present invention comprises core yarn; And a silicone coating portion coated on the outside of the core yarn.

In one embodiment of the present invention, the core yarn is made of a filament fiber made of polyethylene terephthalate (PET), a draw texture yarn (DTY) fiber, an ethylene (PE), a polypropylene (PP) It is preferable that one or more of the groups are selected.

In one embodiment of the present invention, it is preferable that the core yarn has a diameter of 100 to 400 denier and a diameter of the silicon-coated yarn is 300 to 1200 denier.

In one embodiment of the present invention, it is preferred that the silicone coating comprises silicon and comprises a mixed and dispersed coating composition comprising at least one selected from the group consisting of polyurethanes, polyolefins and flame retardants.

In one embodiment of the present invention, the coating composition preferably comprises 20 to 95 parts by weight of silicon relative to the total mass of the coating composition.

In one embodiment of the present invention, the polyurethane is preferably an aromatic isocyanate or an aliphatic isocyanate.

In one embodiment of the present invention, the polyolefin is preferably at least one selected from the group consisting of a polyethylene resin, a polyethylene copolymer resin, a polypropylene resin and a polypropylene copolymer resin.

In one embodiment of the present invention, the coating composition preferably further comprises silica, pigment, silicone oil.

According to an aspect of the present invention, there is provided a method of manufacturing a silicone coated yarn, comprising: preparing a coating composition for forming a coating; And coating a coating composition on the core layer, wherein the coating composition comprises silicon and comprises a mixed and dispersed coating composition comprising one or more selected from the group consisting of polyurethane, polyolefin, and flame retardant .

In one embodiment of the present invention, the step of preparing the coating composition comprises: blending the material comprising the coating composition; And then compounding and extruding the blended coating composition.

In order to solve the above technical problems, the coating composition for producing the silicone coating yarn of the present invention comprises silicon; Polyurethane; And a polyolefin,

The polyurethane is an aromatic isocyanate or an aliphatic isocyanate, and the polyolefin includes one selected from the group consisting of a polyethylene resin, a polyethylene copolymer resin, a polypropylene resin and a polypropylene copolymer resin.

In one embodiment of the present invention, it is preferable to further include at least one selected from the group consisting of silica, pigment, silicone oil and flame retardant copolymer resin.

In one embodiment of the present invention, the flame retardant preferably further comprises 5 to 60 parts by weight based on the total weight of the coating composition.

In one embodiment of the present invention, the flame retardant preferably further comprises 5 to 60 parts by weight based on the total weight of the coating composition.

In order to solve the above-mentioned technical problems, the silicon-coated yarn fabric of the present invention is a silicon-coated yarn fabric woven from a silicon-coated yarn.

The present invention has the effect of improving the antifouling property, the water repellency, the weather resistance, and the light resistance of the coated yarn and the woven fabric by producing the coated yarn with the coating composition containing silicon.

1 is a cross-sectional view of a silicon-coated yarn according to an embodiment of the present invention.
2 is a view showing an extrusion process for producing a silicone-coated yarn according to an embodiment of the present invention.

While the invention is susceptible to various modifications and alternative forms, specific embodiments thereof are shown by way of example in the drawings and will herein be described in detail. It should be understood, however, that the invention is not intended to be limited to the particular embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

Terms including ordinals such as first, second, etc. may be used to describe various elements, but the elements are not limited by such terms. These terms are used only to distinguish one component from another.

When an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, but other elements may be present in between . On the other hand, when an element is referred to as being "directly connected" or "directly connected" to another element, it should be understood that there are no other elements in between.

The terminology used in this application is used only to describe a specific embodiment and is not intended to limit the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In this application, the terms "comprises", "having", and the like are used to specify that a feature, a number, a step, an operation, an element, a component, or a combination thereof, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a cross-sectional view of a silicon-coated yarn according to an embodiment of the present invention.

As shown in the drawing, the silicon-coated yarn of the present invention includes a core yarn 10 and a silicon coating portion 20 coated on the outside of the core yarn 10. [

The core yarn 10 is a basic yarn of a silicon-coated yarn and can be selected to suit the application of the coating yarn. The core yarn 10 may be made of filament fibers of polyethylene terephthalate (PET), draw texture yarn (DTY), ethylene (PE), polypropylene (PP), para aramid, But is not limited thereto.

The polyethylene terephthalate type filament fiber is about 50 to 500 denier, and the thickness of the fiber yarn can be selected according to the kind of the fabric to be produced using the coating yarn of the present invention.

The thickness of the core yarn 10 may range from 100 to 400 deniers depending on the extrusion diameter of the extrusion step in the process of manufacturing the coated yarn and the silicone coated yarn of the present invention may be adjusted to 300 to 1200 denier.

The silicone coating 20 may be coated on the core yarn 10 using a coating composition prepared by blending silicon and polyurethane.

In the coating composition to be applied to the silicone coating portion 20, silicon can realize antifouling and water repellent functions, and polyurethane has strong adhesiveness, so that adhesion between different materials can be realized. Thus, by controlling the content of silicone and polyurethane, a coating composition can be prepared for a desired application. For example, if you want to make coating yarns important in antifouling properties, you can control the functionality of the coated yarn by increasing the content of silicone and reducing the content of polyurethane.

In the coating composition to be applied to the silicone coating portion 20, an aromatic isocyanate may be used or an aliphatic isocyanate may be used in consideration of light resistance and mechanical and chemical properties of the finished product.

Such coating compositions are selected according to the use of the fabric produced using the coating yarn. For example, an aliphatic isocyanate can be used to produce a woven fabric requiring light resistance because of its excellent light resistance, and an aromatic system can be used to produce a coating yarn having good mechanical properties and low cost .

When the coating portion is formed on the core yarn 10 with such a coating composition, the physical properties of the woven fabric using the coating yarn or coating yarn can be blended into a material having a hardness (Shore A) of 40 to 60, or 60 to 80.

 According to an embodiment of the present invention, the coating composition for forming the silicon coating portion 20 of the silicone coating yarn may be a composition prepared by further blending a polyolefin.

The polyolefin may be a polyethylene resin, a polyethylene copolymer resin, a polypropylene resin, a polypropylene copolymer resin, or a blend resin thereof. When a coating composition that further comprises a polyolefin to form a coating portion is prepared, properties of antifouling property, water repellency and abrasion strength can be enhanced. Therefore, the silicone coating film formed with the coating composition comprising the polyolefin can be used for products such as sheets, furniture, bags, shoes, etc., which are important in terms of abrasion resistance and antifouling property.

The silicone, polyurethane and polyolefin constituting the coating part may be blended with 30 to 90 parts by weight of silicon, 1 to 69 parts by weight of polyurethane and 1 to 69 parts by weight of polyolefin.

In order to improve the anti-fouling and water repellency of the coated yarn, the content of silicon can be increased or the content of polyolefin can be increased. Further, in order to improve the adhesive strength with the release material of the coating yarn, the content of the polyurethane is increased, so that the adhesion with the release material can be improved.

In addition, the coating composition forming the coated yarn may further comprise silica, pigment, silicone oil and flame retardant. The coating composition may further comprise abrasion strength of the coating yarn, convenience of the work of manufacturing the coating yarn, color developing silica, pigment, silicone oil and flame retardant.

Silica is added for surface touch control or gloss control of a coating to be prepared, and silicone oil is added in order to improve the mixing property of a main composition (silicone, polyolefin, polyurethane) with a composition to be added (flame retardant, silica, etc.) .

The pigment may be selected depending on the color of the coated yarn, which causes the color of the coated yarn to appear.

The flame retardant is a halogen-based, phosphorus-based or nitrogen-based flame retardant and an inorganic flame retardant, and includes metal oxides and metal hydroxides. The coating composition of the present invention can be prepared by selecting the type of the flame retardant according to the use in which the coating yarn of the present invention is used, and one or more flame retardants may be mixed and used. The flame retardant may comprise from 5 to 60 parts by weight based on the total weight of the coating composition.

The coating composition for forming the silicon coating portion 20 of the silicone coating yarn according to another embodiment of the present invention may further include a functional additive. The functional additive may be a mixture of a lubricant, an ultraviolet stabilizer, an antibacterial agent or other functional filler And the content of the functional additive may be 0.1 to 10 parts by weight based on the total weight of the coating composition.

The method of making the silicone coated yarn of the present invention comprises the steps of preparing a coating composition forming the coating part and coating the coating composition on the core layer to prepare the coating yarn.

The step of preparing the coating composition forming the coating portion is a step of blending a material constituting the coating composition such as silicone, polyurethane and polyolefin. That is, the material constituting the coating composition is compounded and dispersed. When a functional agent such as a lubricant, an ultraviolet stabilizer, an antibacterial agent, or other functional filler for forming a coating composition is included, the functional material may be injected into a step of compounding and dispersing and may be mixed in an extrusion compounding step .

At this time, depending on the use of the coating yarn formed by forming the coating portion with the coating composition, the content of the components constituting the coating composition may be controlled and blended, and the coating composition forming the coating portion may be a coating composition of compounding type. The coating composition in the form of compounding of such a coating composition is generally manufactured by a compound manufacturing method available to those skilled in the art, and there is no limitation to the method.

The step of dispersing the coating composition may further comprise a compounding extrusion step. In the compounding extrusion step, an extruder equipped with a twin screw may be used to optimize the dispersion of the coating composition. The temperature of the extruder may be in the range of 100 ° C. to 220 ° C., and the length of the cylinder is preferably 1 m or more. The dispersion-completed composition is put into a hopper of an extruder and extruded at a temperature of 100 to 220 캜. In this extrusion step, a functional material such as a lubricant, a UV stabilizer, an antibacterial agent or other functional filler can be compounded. The functional material may be added to the extruder hopper using the master batch to proceed the compounding extrusion step. Further, the flame retardant and the additive may be first processed and then recycled.

A coating composition containing such silicon may be prepared in the form of compounding, and the coating composition may be coated on the core yarn 10 using an extrusion processing method. In the extrusion processing method, the core yarn 10 is put into the nozzle of the extruder in accordance with the coating direction of the extruder. When the core yarn 10 enters the extruder, the coating composition is coated on the coating yarn to a constant thickness. The extrusion processing method may be carried out while controlling the extrusion temperature from 170 캜 to 195 캜 in accordance with the melting characteristics of the coating composition. The core yarn 10 having passed through the extruder may be a coating yarn coated with the coating composition, and may further include a step of cooling and winding the coated yarn. The coated yarn can be passed through a step of preparing a coating yarn by winding it on a beam according to the texture of the weaving yarn and its density before the weaving step to be made into a woven fabric form. This cannon step can be accomplished in the same manner as the cannon made in general fabric manufacturing and can be accomplished in a variety of ways that will be apparent to those skilled in the art.

A method of making a woven fabric comprising a silicone coated yarn according to an embodiment of the present invention includes the steps of weaving a silicone coated yarn and heating the woven fabric to fix the woven fiber.

The step of weaving a silicone-coated yarn is generally a method by which a person skilled in the art can weave woven fabrics using yarns that can be practiced without limitation.

The woven fabric made of such a silicone-coated yarn can be used for various purposes such as shoes, bags, sheets, etc., and it is possible to manufacture woven fabrics so as to utilize the adhesive properties between different fabrics by controlling the content of polyurethane, And a woven fabric excellent in water repellency.

<Preparation of Core Yarn 10>

Two yarns of polyethylene terephthalate (PET) filament yarn and two types of polyethylene terephthalate (PET) DTY 150 denier yarn were prepared as the yarn used as the core yarn 10.

&Lt; Preparation of coating composition >

To prepare the coating composition, silicone and polyurethane were blended in a weight ratio of 30:70. A flame retardant and a functional additive were added to and dispersed in the blended composition to prepare a coating composition. At this time, the coating composition was prepared such that the weight ratio of the blended composition to the flame retardant and the functional additive was 90:10, and the weight ratio of the silicone: polyurethane: flame retardant and the functional additive was 27:63:10.

As the functional additive, phosphorus flame retardant 5 parts by weight silicone oil 3 parts by weight calcium carbonate 2 parts by weight was used for the total weight. Calcium carbonate is an additive that removes stickiness.

<Compounding Process>

After the coating composition is dispersed, an extrusion compounding step is carried out. The compounding extruder was an extruder equipped with a twin screw for optimizing the dispersion of the coating composition, the temperature of the extruder was 220 ° C., the length of the cylinder was 1 m, And this was carried out at an extrusion temperature of 220 ° C.

&Lt; Preparation of coated yarn &

The core yarn 10 prepared in advance for preparing the coated yarn is passed through the core yarn 10 in the die nozzle of the extruder in accordance with the direction of warp or weft in the coating direction of the extruder, Coating. At this time, the coating composition was coated to a thickness of 400 탆 and coated yarn discharged from an extruder was wound. The temperature of the extrusion coating was 195 [deg.] C and the coating speed was 600 m / min.

<Fabrication of Fabrics>

The coated yarn prepared in the above step was wound by a light yarn, made into a net structure having a width of 1.6 m, and then subjected to a tentering process at 170 캜 to produce a woven fabric.

The coating composition was prepared in the same manner as in Example 1 except that the ratio of silicon to polyurethane was 50:50 in the preparation of the coating composition in Example 1. The preparation of the core yarn 10, Coated yarn was manufactured through a manufacturing process of a coated yarn, and a woven fabric was produced using the same.

The coating composition was prepared in the same manner as in Example 1 except that the ratio of silicon to polyurethane was 70:30, and the preparation of the core yarn 10, the preparation of the coating composition, the compounding step, Coated yarn was manufactured through a manufacturing process of a coated yarn, and a woven fabric was produced using the same.

A polypropylene material was used in place of the polyurethane in the preparation of the coating composition in Example 1 and the ratio of silicon to polypropylene was set to 30:70. In the same manner as in Example 1, ), A coating composition, a compounding process, and a coating yarn, and then a woven fabric was prepared using the coated yarn.

The coating composition was prepared in the same manner as in Example 1 except that the ratio of silicon to polypropylene was 50:50 in preparing the coating composition in Example 4. The preparation of the core yarn 10, Coated yarn was manufactured through a manufacturing process of a coated yarn, and a woven fabric was produced using the same.

The coating composition was prepared in the same manner as in Example 1 except that the ratio of silicon to polypropylene was 70:30 when preparing the coating composition in Example 4. The preparation of the core yarn 10, Coated yarn was manufactured through a manufacturing process of a coated yarn, and a woven fabric was produced using the same.

[Comparative Example 1]

In preparing the coating composition in Example 1, a flame retardant agent and a functional additive were added to and dispersed in polyurethane except for silicone to prepare a coating composition. The preparation of the core yarn 10, the preparation of the coating composition, the compounding process, and the coating process were carried out in the same manner as in Example 1, except that the weight ratio of the polyurethane to the flame retardant and the functional additive was 90:10. A coated fabric was prepared and used to prepare a woven fabric.

[Comparative Example 2]

In preparing the coating composition in Comparative Example 1, a coating composition was prepared using polypropylene instead of polyurethane. In the same manner as in Example 1, the preparation of the core yarn 10, the preparation of the coating composition, The coating process, and the coating process.

The properties of the woven fabrics produced by the manufacturing methods of Examples 1 to 6 and Comparative Examples 1 and 2 were compared, and the results are shown in Table 1 below.

division Antifouling Water repellency Weatherability Light resistance Example 1 ○ ○ ○ ○ Example 2 ○ ◎ ◎ ◎ Example 3 ◎ ◎ ◎ ◎ Example 4 ○ ○ ◎ ◎ Example 5 ◎ ◎ ◎ ◎ Example 6 ◎ ◎ ◎ ◎ Comparative Example 1 X X △ △ Comparative Example 2 △ △ △ △

(?: Very good,?: Good,?: Fair, X: poor)

As shown in the above table, when the coating composition is prepared from the coating composition containing no silicon, it is found that the properties of the woven fabric are poor in terms of antifouling property, water repellency, weather resistance and light resistance.

While the invention has been shown and described with reference to certain preferred embodiments thereof, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. Accordingly, the true scope of the present invention should be determined by the following claims.

Claims (14)

Core yarn; And
And a silicone coating portion coated on the outside of the core yarn,
Wherein the silicon coating portion comprises a mixed and dispersed coating composition comprising silicon and a polyolefin,
Wherein the coating composition comprises a silicone: polyolefin in a weight ratio of 45:45 to 63:27 based on 100 parts by weight of the total weight of the coating composition.
The method according to claim 1,
In the core yarn,
A silicone-coated yarn selected from the group consisting of polyethylene terephthalate (PET), polyethylene (PE), polypropylene (PP), para-aramid and meta-aramid.
The method according to claim 1,
In the core yarn,
A silicon-coated yarn having a fineness of 100 to 400 denier and a fineness of the silicon-coated yarn of 300 to 1200 denier.
The method according to claim 1,
Wherein the silicone coating further comprises a polyurethane or a flame retardant.
delete 5. The method of claim 4,
Wherein the polyurethane is an aromatic-based isocyanate or an aliphatic-based isocyanate.
The method according to claim 1,
The polyolefin,
A silicone-coated yarn selected from the group consisting of a polyethylene resin, a polyethylene copolymer resin, a polypropylene resin and a polypropylene copolymer resin.
5. The method of claim 4,
Wherein the coating composition further comprises silica, pigment, silicone oil.
Preparing a core yarn;
Preparing a mixed and dispersed coating composition comprising silicon: polyolefin in a weight ratio of 45:45 to 63:27 based on 100 parts by weight of the total mass; And
Coating the coating composition on the outside of the core yarn while passing the core yarn through an extruder;
&Lt; / RTI &gt;
10. The method of claim 9,
The step of preparing the coating composition comprises:
Blending the material comprising the coating composition;
And a step of compounding and extruding the blended coating composition
silicon; And a polyolefin,
Wherein the polyolefin is at least one selected from the group consisting of a polyethylene resin, a polyethylene copolymer resin, a polypropylene resin, and a polypropylene copolymer resin,
Wherein the coating composition comprises a silicone: polyolefin in a weight ratio of 45:45 to 63:27, based on 100 parts by weight of the total weight of the coating composition.
12. The method of claim 11,
Silica, pigment, silicone oil, and flame retardant copolymer resin. &Lt; Desc / Clms Page number 24 &gt;
13. The method of claim 12,
Wherein the flame retardant comprises 5 to 10 parts by weight based on 100 parts by weight of the total weight of the coating composition.
A silicone-coated fabric woven from the silicone-coated yarns of any one of claims 1 to 4 and 6 to 8.

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