KR101458463B1 - Fabric of Blue Jeans with Multi Layers and Blue Jeans Made from the Same - Google Patents

Abstract

The present invention relates to a multi-layered jeans fabric and a jeans by which a multi-layered jeans fabric is formed, in which a membrane layer having a breathable and waterproof function is formed to improve defects of the jeans while maintaining the inherent characteristics of the jeans, It is about jeans by it. Fabrics for jeans include cotton / polyester fibers that form the outer surface; A polyester tricot forming an inner surface; And a membrane layer of a PTF or polyurethane material disposed between the cotton / polyester fiber and the polyester tricot. In the cotton / polyester fiber layer, the cotton fiber and the polyester fiber have a density ratio per unit area of cotton fiber: polyester Fiber = 100: 25-70.

Description

BACKGROUND OF THE INVENTION Field of the Invention [0001] The present invention relates to a multi-layered jeans fabric,

The present invention relates to a multi-layered jeans fabric and a jeans by which a multi-layered jeans fabric is formed, in which a membrane layer having a breathable and waterproof function is formed to improve defects of the jeans while maintaining the inherent characteristics of the jeans, It is about jeans by it.

Jeans are blue pants made of cotton fabrics such as twilled denim or cottonwood. Jeans are useful as daily wear or work clothes because of their thick and tough characteristics, and they have an advantage of being excellent in wearing comfort. However, due to its high hygroscopicity, jeans are susceptible to shrinkage in the course of washing, even if they are difficult to dry in contact with moisture and, on the other hand, they are pre-shrunk in the manufacturing process. In addition, it has a disadvantage that it can be easily discolored in the washing process. In order to compensate for these disadvantages of jeans, stretchy denim mixed with spandex is used instead of non-stretchable denim.

Prior art related to the material of jeans is disclosed in Patent Publication No. 2004-0091906 'Core spandex dye for jeans and its manufacturing method'. It is an object of the present invention to provide a core spandex cotton yarn which has been dyed instead of a cotton yarn which has no elasticity in the prior art in order to improve the elasticity, wearing comfort, convenience and practicality of jeans. For the above-mentioned purpose, the prior art discloses a method in which a core spandex cotton yarn is coated with a chlorine solution mixed with a dye and a foaming agent on the surface of a yarn in a stretched state with tension applied thereto, and the dye coated yarn is dried to fix the dye to the core spandex yarn In which the core spandex dyeing yarn for jeans is produced.

Another prior art related to jeans fabrics is Patent No. 1221494, 'Jeans Fabric'. The prior art is to provide a jeans fabric having good stretchability and improved wearing comfort, convenience and practicality by knitting a cotton yarn by mixing spandex yarn or by mixing polyester yarn and spandex yarn based on cotton yarn do. For the above purpose, prior art is knitted on both sides by mixing 77% of cotton yarn (1/20 number + 20 number of SLUB), 19% of polyester yarn (75D) and 4% of spandex yarn per 275 g / And a knitted fabric for jeans.

The prior art is disadvantageous in that it does not solve such problems as hygroscopicity, low heat insulation property or low water repellency which are other drawbacks of jeans for improving elasticity or comfort.

The present invention has been made to solve the problems of the prior art and has the following purpose.

An object of the present invention is to provide an absorbent article which comprises a polyester tricot on the inner side in contact with a human body and a membrane layer formed on the outer surface exposed to the external environment as cotton / So that the defect can be improved while maintaining the attractive characteristic.

Another object of the present invention is to provide a jeans with improved water repellency, moisture permeability and waterproofness.

According to a preferred embodiment of the present invention, the fabric for jeans comprises a face / polyester fiber layer forming an outer face; A polyester tricot layer forming an inner surface; And a membrane layer of polytetrafluoroethylene (PTFE or polyurethane, disposed between the cotton / polyester fiber layer and the polyester fiber, wherein the polyester fibers in the cotton / polyester fiber layer per unit area The density ratio is cotton fiber: polyester fiber = 100: 25 to 70.

According to another preferred embodiment of the present invention, the moisture permeability of the fabric for jeans is 9,400 to 13,000 g / m2 / 24 and the water pressure is 8,900 to 13,500 mm H2O.

According to another preferred embodiment of the present invention, the outer surface comprises a cotton / polyester fiber layer, the inner surface comprises a polyester tricot layer, and a membrane layer of PTFE or polyurethane fibers is formed between the inner and outer surfaces The water vapor permeability is 9,400 to 13,000 g / m 2/24, and the water pressure is 8,900 to 13,500 mm H2O.

The fabric for jeans according to the present invention has an advantage that the disadvantages of the jeans are complemented while maintaining the characteristics inherent to the jeans. The jeans according to the present invention have water repellency, moisture permeability and water resistance, and are excellent in water pressure, and the elasticity of the polyester yarn is improved by using a stretchable yarn (T-400). Further, the jeans according to the present invention have an advantage of being able to protect the body from external temperature changes while reducing the shrinkage phenomenon after washing.

1 shows an embodiment of a fabric for jeans according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the embodiments shown in the accompanying drawings, but the present invention is not limited thereto. In the following description, components having the same reference numerals in different drawings have similar functions, so that they will not be described repeatedly unless necessary for an understanding of the invention, and the known components will be briefly described or omitted. However, It should not be understood as being excluded from the embodiment of Fig.

The fabric for jeans according to the present invention comprises a face / polyester fiber layer forming an outer face; A polyester tricot layer forming an inner surface; And a membrane layer of PTFE or polyurethane disposed between the cotton / polyester fiber layer and the polyester tricot layer, wherein in the cotton / polyester fiber layer, the cotton fiber and the polyester fiber have a density ratio of 100: 25 < / RTI >

This is explained in detail below.

1 illustrates a cross-sectional view of an embodiment of a fabric for jeans according to the present disclosure.

Referring to Figure 1, the outer surface 11 of the fabric for jeans may be a face / polyester fiber layer and the inner surface 12 may be a polyester tricot layer. And the membrane layer 13 may be disposed between the cotton / polyester fiber layer and the polyester tricot layer. The membrane layer 13 can be made of, for example, polytetrafluoroethylene (PTFE) or polyurethane elastic fibers and can be made to adhere with adhesives 14a and 14b.

The face fibers 11 on the outer side 11 of the cotton / polyester fiber layer may be denim, such as denim, which corresponds to jeans-specific fabrics, but are not limited to, for example, COOLMAX denim, TENCEL denim, BAMBOO denim or anslum denim, which are used in jeans. In other words, the cotton fiber may be a cotton fabric generally used for jeans or jeans, and the present invention is not limited by the type of cotton fiber.

The polyester fiber can be a fiber having a strength of 4.3 to 5.5 (g / d), an elongation of 20 to 30%, a specific gravity of 1.38 and an elasticity of 60 to 70, For example, a T-400 polyester yarn having elasticity. Another advantage of polyester fibers is that it can be a quick-drying material due to high moisture evaporation.

The ratio of the density of the cotton fiber to the polyester fiber per unit area on the outer surface 11 which is the cotton / polyester fiber layer may be cotton fiber: polyester fiber = 100: 25 to 70. If the ratio of the polyester fibers is less than 25, the quick-drying material or stretchability may be small, and if the ratio of the polyester fibers is larger than 50, the characteristic inherent to the jeans can not be maintained.

The polyester tricot layer to be the inner surface 12 can be made into a tricot structure of the warp knitting method and can be a double tricot or a single tricot.

A membrane layer 13 may be formed between the outer surface 11 and the inner surface 12. The membrane layer 13 may be made of, for example, PTFE or polyurethane resin. The polyurethane membrane layer from the polyurethane resin can be made by the following method.

A polyurethane resin having a viscosity of 1000 to 2500 cps / 25 占 폚 may be mixed with a surfactant to prepare an emulsion state, and a slip agent, defoaming agent, pigment or water repellent agent may be added. Thereafter, an isocyanate-based crosslinking agent may be added to form a coating composition. And the coating composition may be coated using a laminating agent to a thickness of 5 to 30 [mu] m on a release paper such as, for example, a polyester. Then, using a hot-air drier to dry and separate the release paper, a breathable and waterproof membrane can be produced. The moisture permeability, water repellency, weight or water resistance of the membrane can be appropriately controlled by the kind, thickness or drying condition of the polyurethane resin.

The prepared membrane can be adhered between the outer surface 11 and the inner surface 12 using hot melt or resin adhesive as shown in Fig. For example, the resin adhesive may be a polyethylene adhesive, a polyvinyl chloride adhesive, or a polyester adhesive, but may preferably be a polyamide adhesive. As shown in Fig. 1, the bonding may be dotted or slit-shaped. The dot method means that a circular bonding portion having a small diameter is formed at regular intervals, and the slit method means that a linear bonding portion is formed. Such an adhesion scheme allows the appearance of the outer surface 11 of the face / polyester fiber and the inner surface 12 of the polyester tricot layer present on both sides of the membrane layer 13 to appear on the jeans fabric .

As an alternative to using adhesives, a polyurethane or PTFE membrane may be coated on the polyester tricot fiber layer or the cotton / polyester fiber layer. First, a cotton / polyester fiber layer or a polyester tricot can be prepared and the polyurethane coating composition or the PTFE coating composition on the cotton / polyester or polyester tricot can be coated using lamination to a predetermined thickness. After that, it may be completely dried or adhered to a cotton / polyester or polyester tricot layer using a hot melt adhesive after drying to a certain level.

The membrane layer can be formed in various ways and the present invention is not limited to the embodiments shown.

The characteristic of the jeans fabric according to the present invention is that water repellency, water resistance, moisture permeability, warmth and quick drying property are improved.

In order to test the characteristics of the fabric for jeans according to the present invention, the fabric for jeans was manufactured from each functional fiber, and the moisture permeability, shrinkage rate and water pressure were measured. The physical properties of the jeans fabric were such that the thickness of the cotton / polyester outer layer was between 0.60 and 0.75 mm and the thickness of the polyester tricot inner layer was between 0.10 and 0.50 mm. The weight of the cotton / polyester outer layer was 250 to 360 g / m 2 and the weight of the inner layer of the tricot was 70 to 200 g / m 2. The density of the cotton / polyester outer layer was such that the warp and weft were 60 to 68 and 10 to 50, respectively. The cotton fiber was twisted with a warp and the polyester fiber was twisted. The thickness was measured according to KS K 0506, the weight according to KS K 0514 and the density according to KS K 051. The moisture permeability of the manufactured fabric was measured by the water method (B-1 method) of the moisture permeability test method of JIS L 1099-1993 fiber products and the shrinkage ratio was measured according to the KS K0601 fabric shrinkage test method. lost. The measurement of the shrinkage percentage was carried out after washing and drying for 5 times with respect to the manufactured fabric. And the water pressure was made according to ISO 0811 (Waterproofness test method of textile products).

Example

Example 1

Polyester fibers and woven denim fibers were used to fabricate cotton / polyester fibers and polyester tricot fibers, and fabric was made of 3 layers of polyurethane membranes with breathable / waterproof properties. In the case of cotton / polyester fibers, the ratio of polyester fibers to cotton fibers per unit area was polyester: 100: 50, and the thickness of the membrane layer was 20 占 퐉 while bonding with a polyamide-based hot melt adhesive. The moisture permeability, shrinkage and water pressure were measured in the same manner as described above. The moisture permeability was 9,500 ~ 11,000 g / m2 / 24hr, the shrinkage rate was 2.5 ~ 3.2% and the water pressure was 9,600 ~ 12,000 mm H2O.

Example 2

Polyester fibers and woven denim fibers were used to fabricate cotton / polyester fibers and polyester tricot fibers, and 3layer jeans fabrics were fabricated using breathable and waterproof polyurethane membranes. In the case of cotton / polyester fibers, the ratio of polyester fibers to cotton fibers per unit area was polyester: 100: 60, and the thickness of the membrane layer was 15 占 퐉 while bonding with a polyamide-based hot melt adhesive. The moisture permeability, shrinkage and water pressure were measured in the same manner as described above. The water vapor permeability was 9,000 to 10,000 g / m 2/24 hr, the shrinkage rate was 2.2 to 2.8%, and the water pressure was 9,400 to 11,000 mm H2O.

Example 3

Polyester fiber and polyester tricot fiber were fabricated by using polyester fiber and woven denim fiber, and 3layer jeans fabric was fabricated by using PTFE membrane which is breathable and waterproof. In the cotton / polyester fiber, the ratio of the polyester fiber to the cotton fiber per unit area was polyester: 100: 30, and the thickness of the membrane layer was 25 占 퐉 while bonding with a polyamide-based hot melt adhesive. The moisture permeability, shrinkage and water pressure were measured in the same manner as described above. The water vapor permeability was 9,900 to 12,500 g / m 2/24 hr, the shrinkage rate was 2.5 to 3.3%, and the water pressure was 10,000 to 13,000 mm H2O.

Example 4

Polyester fiber and polyester tricot fiber were fabricated using polyester fiber and woven denim fiber, and fabric was fabricated with 3 layer using PTFE membrane with moisture permeability. The ratio of polyester fibers per unit area to cotton fibers in the cotton / polyester fibers is 100: 45 in the case of cotton: and the thickness of the membrane layer is 25 占 퐉 while being coated on the polyester tricot Respectively. The polyester tricot with the PTFE coating layer was then adhered to the cotton fiber layer with a polyamide hot melt adhesive. The moisture permeability, shrinkage and water pressure were measured in the same manner as described above. The water vapor permeability was 10,000 to 12,300 g / m 2/24 hr, the shrinkage rate was 2.2 to 2.9%, and the water pressure was 10,400 to 12,800 mm H2O.

The moisture permeability of the fiber according to the present invention was measured according to the measuring method of JIS L 1092 and the drying rate on the other side was measured according to JIS L 1018. The number of feet was in the range of 0 to 5, and the higher the score, the better the foot number. The drying time was measured by measuring the water content of specimens 1 cm × 1 cm in distilled water at 60% relative humidity at room temperature until the water content of the specimens became 5 wt% from the initial value. For the manufactured jeans fabric, the water repellency was 3 to 4 and the drying time was 15 to 25 minutes.

The fabric for jeans according to the present invention has an advantage that the disadvantages of the jeans are complemented while maintaining the characteristics inherent to the jeans. The jeans according to the present invention have an advantage that they are excellent in water pressure resistance and have water repellency and tear in a specific direction or have durability against wear. Further, the jeans according to the present invention have an advantage that shrinkage phenomenon is reduced after washing, and drying is easy even when the water is wet.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention . The invention is not limited by these variations and modifications, but is limited only by the claims appended hereto.

11: inner surface
12: outer surface
13: Membrane layer

Claims (3)

A face / polyester fiber layer forming an outer face;
A polyester tricot forming an inner surface;
A membrane layer of polyurethane or polytetrafluoroethylene (PTFE) disposed between said face / polyester fiber layer and said polyester tricot,
Wherein the density ratio of the polyester fiber to the cotton fiber in the cotton / polyester fiber layer per unit area is cotton fiber: polyester fiber = 100: 25 to 70. The jean fabric according to claim 1, wherein the fabric for jeans has a moisture permeability of 9,400 to 13,000 g / m 2/24 hr and a water pressure of 8,900 to 13,500 mm H2O. In jeans,
A polyurethane or PTFE membrane layer is formed between the inner surface and the outer surface, and the moisture permeability is 9,400 to 13,000 g / m < 2 > / 24 and the water pressure Wherein the water content is from 8,900 to 13,500 mm < RTI ID = 0.0 > H2O. ≪ / RTI >

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