KR102561228B1 - The Process Of Producing 3―Dimensional Tri―Layer Fabric Having Excellent Elasticity - Google Patents

Abstract

The present invention relates to a method for manufacturing a three-dimensional triple-layer fabric with excellent elasticity. According to the present invention, synthetic fiber monofilaments are used as weft yarns for the surface layer and the back layer, so that air permeability is excellent, and resilience and elasticity are excellent during long-term use while air permeability is excellent. By providing three-dimensional triple fabric, it can be usefully used for shoe uppers and bag backboards.

Description

Manufacturing method of three-dimensional trilayer fabric having excellent elasticity {The Process Of Producing 3―Dimensional Tri―Layer Fabric Having Excellent Elasticity}

The present invention relates to a method for manufacturing a three-dimensional tri-layer fabric with excellent elasticity, and relates to a three-dimensional triple layer fabric with excellent elasticity and restoring force that can be usefully used for shoe uppers and bags.

In general, mesh fabric, which is widely used as the back of a bag or a shoe upper material, secures elasticity and air permeability when wearing a bag to improve the comfort and comfort of the back. It is a fabric knitted or woven to form large and small ventilation holes with synthetic fiber yarns such as polyester or nylon in order to make it feel comfortable.

In the past, double raschel fabric woven with a double raschel machine was mainly used for this mesh fabric, and the double raschel fabric is usually composed of three layers and is a triple knitted fabric in which the front and back fabrics are connected by cross-linking yarns, and are more buffered than woven fabrics. Although it has excellent properties, it has poor resilience and elasticity when used for a long time, so its use in the field of sporting goods is limited.

Accordingly, in Korean Patent Registration No. 10-1418300, surface yarns, which are yarns forming the surface layer, are coated yarns in which resin is coated on the surface of multifilaments, and intermediate yarns, which are yarns forming an intermediate layer, are monofilaments. not exposed

It provides a 3-layer double raschel warp knitted fabric with excellent abrasion resistance, air permeability and cushioning properties, but the elasticity of the intermediate yarn monofilament is weakened when used for a long time, resulting in a decrease in restoring force. When the density of the intermediate yarn is increased, the air permeability is reduced there was

Republic of Korea Patent Registration No. 10-1418300 (published on August 11, 2014)

Therefore, according to the present invention, it is a technical task to solve the problems of the prior art to provide a three-dimensional triple fabric having excellent resilience and elasticity during long-term use and excellent air permeability.

Therefore, according to the present invention, the warp yarn is composed of synthetic fiber yarn, the weft yarn is composed of synthetic fiber monofilament yarn, the surface layer and the back layer,

As the warp yarn is composed of synthetic fiber yarn and the weft yarn is made of an intermediate layer composed of spandex covering yarn,

A triple weave portion in which the surface layer, the back layer, and the intermediate layer are formed in a triple weave and a joint portion in which the surface layer, the back layer, and the intermediate layer are joined are alternately formed,

A three-dimensional triple-layer fabric with excellent elasticity is provided, characterized in that the surface layer and the back layer are formed to form a curved surface in the weft direction by shrinking the weft of the middle layer by a shrinkage process, which is two heat treatment processes at a processing temperature of 150 to 180 ° C. .

In addition, in the three-dimensional triple fabric with excellent elasticity of the present invention, the warp yarn is a synthetic fiber yarn that is any one of nylon yarn, polyester yarn, and polypropylene yarn,

The weft yarn of the surface layer and the back layer is a synthetic fiber monofilament yarn that is any one of nylon yarn, polyester yarn, and polypropylene yarn,

It is characterized in that the weft yarn of the middle layer is a spandex covering yarn in which a synthetic fiber yarn, which is any one of nylon yarn, polyester yarn, and polypropylene yarn, is covered on the core spandex yarn.

In addition, the bonding portion is characterized in that the weft yarn of the surface layer and the back layer and the weft yarn of the middle layer are connected to one warp yarn, and one or more caking defects are continuously formed in the weft yarn direction.

In addition, as a preferred method for producing a three-dimensional triple fabric having excellent elasticity of the present invention, after warping the synthetic fiber yarns in a warp,

Synthetic fiber monofilament yarn, which is the weft yarn for the surface layer and the back layer, and spandex covering yarn, which is the weft yarn for the middle layer, are woven in a triple weave, and the surface layer, the back layer, and the middle layer are formed of triple weave. The surface layer, the back layer and After weaving so that the joints where the middle layers are connected are formed alternately,

By performing a shrinkage process, which is heat treatment twice, at a processing temperature of 150 to 180 ° C., the middle layer shrinks by 25 to 35% in the weft direction, so that the surface layer and the back layer are curved in the weft direction. Three-dimensional triple fabric, characterized in that A manufacturing method is provided.

In addition, the shrinkage process is performed at a processing temperature of 150 to 180 ° C. at a processing speed of 25 to 30 yards / min. 10 to 15% shrink processing is performed first, and then 15 to 20% shrink processing is performed secondly to obtain a total of 25 Characterized in that it causes ~35% shrinkage.

Therefore, according to the present invention, synthetic fiber monofilaments are used as the weft of the surface layer and the back layer, and after weaving, the surface layer and the back layer are curved in the direction of the weft by a shrinkage process, so that the shape stability of the curved surface is excellent, resulting in resilience and elasticity during long-term use. This excellent three-dimensional triple fabric with excellent air permeability can be usefully used for shoe uppers and backboards of bags.

1 is a schematic cross-sectional view of a three-dimensional triple fabric having excellent elasticity of the present invention;
Figure 2 is a perspective view of the three-dimensional triple fabric excellent in elasticity of the present invention,
Figure 3 is a photograph of a three-dimensional triple fabric with excellent elasticity of the present invention,
Figure 4 is an enlarged cross-sectional view of one embodiment of the three-dimensional triple fabric excellent in elasticity of the present invention,
Figure 5 is an enlarged cross-sectional view of one embodiment of the three-dimensional triple fabric excellent in elasticity of the present invention,
6 is a photograph of the fabric before shrinkage of the three-dimensional triple fabric having excellent elasticity of the present invention.
7 to 10 are test reports of the three-dimensional triple fabric having excellent elasticity of the present invention.

Hereinafter, with reference to the accompanying drawings, embodiments of the present invention will be described in detail so that those skilled in the art can easily carry out the present invention. The invention may be embodied in many different forms and is not limited to the embodiments set forth herein. In order to clearly explain the present invention in the drawings, parts irrelevant to the description are omitted.

The three-dimensional triple weave having excellent elasticity according to an embodiment of the present invention is a triple weave of a surface layer, a back layer, and an intermediate layer, as shown in FIG. The triple weave portion (A) formed of and the joint portion (B) in which the surface layer, the back layer and the middle layer are joined are alternately formed, and the weft yarn of the middle layer is contracted by the shrinking process, so that the surface layer and the back layer are curved in the weft direction. it is formed to achieve.

As shown in Figure 4, the surface layer 10 is a synthetic fiber monofilament yarn weft yarn (1) and The warp yarn 2 is woven, the back layer 20 is made by weaving the weft yarn 1 and the warp yarn 2, which are synthetic fiber monofilament yarns, and the middle layer 30 is made by weaving the weft yarn 3 and the warp yarn, which are spandex covering yarns. (2) is made by weaving.

The warp yarn 2 of the surface layer, the back layer, and the middle layer uses the same synthetic fiber yarn, which is any one of nylon yarn, polyester yarn, and polypropylene yarn.

The surface layer and the back layer are composed of the warp yarn and synthetic fiber monofilament weft yarn, and in particular, the weft yarn of the surface layer and the back layer uses a synthetic fiber monofilament yarn that is any one of nylon yarn, polyester yarn, and polypropylene yarn. It is preferable that the surface layer and the back layer are curved in the weft direction by the shrinkage process, so that the shape stability of the curved surface is excellent when forming a three-dimensional triple layer fabric.

The wefts of the middle layer are contracted more severely than the wefts of the surface layer and the back layer by the shrinkage process using spandex covering yarns, so that the wefts of the surface layer and the back layer are bent around the joint point (4) This is so that the surface layer and the back layer are curved in the weft direction. In particular, it is preferable that the spandex covering yarn is covered with a synthetic fiber yarn, which is any one of nylon yarn, polyester yarn, and polypropylene yarn, on the core spandex yarn.

The triple weave portion, which is part A in FIG. 1, is a portion formed in a triple weave by weaving the surface layer, the back layer, and the middle layer by crossing the weft yarns of the surface layer, the back layer, and the middle layer at individual warp yarns. In FIG. 1, the joint portion, which is part B, is a portion formed so that the weft yarns of the surface layer, the back layer, and the middle layer cross together at the warp of one strand to form a joint point. In this case, the number of warp yarns at the junction point may be not only one yarn but also two or more yarns. As shown in the perspective view of FIG. 2, the joint portion (B) is formed continuously in an oblique direction (α) and is formed alternately with the triple weave portion (A).

The bonding portion is one in which the weft yarns of the surface layer and the back layer are connected to one warp yarn, and it is preferable that one or more point defects are continuously formed in the weft direction. As shown in FIG. The constituent wefts of may be crossed together with the warp of one strand to form the connection point (4). In addition, as shown in FIG. 5, a plurality of connection points 4 are formed continuously in the weft direction, so that the pattern of the three-dimensional triple weave can be varied.

The feature of the three-dimensional triple fabric of the present invention is that the surface layer, the back layer, and the middle layer are contracted by the shrinking process, which is heat treatment twice at 150 to 180 ° C., so that the surface layer and the back layer are curved in the direction of the weft. it is formed to achieve.

That is, as the spandex covering yarn, which is the weft yarn of the middle layer, shrinks more severely than the constituent weft yarns of the surface layer and the back layer by shrinkage processing, the constituent weft yarns of the surface layer and the back layer are bent around the junction point, as shown in FIGS. 1 to 3 The surface layer and the back layer form a curved surface in the weft direction. The curved surface may be formed in a semicircular or semielliptical shape by adjusting the shrinkage rate.

In this way, since the surface layer and the back layer are curved in the direction of the weft, even with a low weft density, resilience and elasticity can be excellent against external force for a long time, and air permeability can be excellent.

Hereinafter, an embodiment of a method for manufacturing a three-dimensional trilayer fabric having excellent elasticity according to the present invention will be described.

First, a synthetic fiber yarn to be used as a warp yarn is selected. For the warp yarn, any one of nylon yarn, polyester yarn, and polypropylene yarn may be used.

Thereafter, synthetic fiber monofilament yarns, which are weft yarns for the surface layer and back layer, and spandex covering yarns, which are weft yarns for the middle layer, are supplied to the loom to be woven in a triple weave. Any one of the synthetic fiber monofilament yarns is supplied, and the weft yarn of the middle layer is supplied with a spandex covering yarn in which the core spandex yarn is covered with a synthetic fiber yarn of any one of nylon yarn, polyester yarn, and polypropylene yarn.

According to the set organizational chart, the triple weave portion in which the surface layer, the back layer, and the intermediate layer are formed in a triple weave and the joint portion where the surface layer, the back layer, and the intermediate layer are joined are alternately formed so that the joint portion is continuously formed in the oblique direction (α) weave The triple weave thus woven has a flat triple weave form as shown in FIG. 6, but the surface layer and the back layer are curved in the weft direction by a later shrinkage process to become a three-dimensional triple weave as shown in the photo of FIG. 3.

The shrinkage process causes the middle layer to shrink by 25 to 35% in the weft direction by two heat treatment processes at a processing temperature of 150 to 180 ° C. so that the surface layer and the back layer are curved in the weft direction. 150 ~ 180 ℃ at a processing speed of 25 ~ 30 yards / minute 10 ~ 15% shrink processing first, then 15 ~ 20% second shrink processing so that the overall shrinkage is 25 ~ 35% It is desirable for imparting and elastic restoring power.

As described above, as the spandex covering yarn, which is the weft yarn of the middle layer, shrinks more severely than the constituent weft yarns of the surface layer and the back layer by shrinkage processing as described above, the constituent weft yarns of the surface layer and the back layer are bent around the junction point, as shown in FIGS. 1 to 3 As such, the surface layer and the back layer are curved in the weft direction.

In the following examples, there is a non-limiting example of manufacturing a three-dimensional triple fabric having excellent elasticity of the present invention.

[Example 1]

Polyester black dope yarn (150d/48fila SD yarn) is used as the ramp, polyester monofilament (diameter 0.16mm) as weft yarn for the surface layer and back layer, and spandex covering yarn as weft yarn for the middle layer (core: spandex 70d, covering: poly Ester 300d/96fila) was used.

The weft yarns are intersected with the warp yarns (see FIG. 5), and the weft yarn (1) of the surface layer (10) intersects one warp yarn (2), and the weft yarn (1) of the back layer (20) is warp yarn (2). ), and the weft yarn (3) of the middle layer 30 is crossed with one yarn of the warp yarn (2), and such crossing is repeated to form the triple weave portion (A).

In the joint part (B), the weft yarn 1 of the surface layer 10, the weft yarn 1 of the back layer 20, and the weft yarn 3 of the middle layer 30 are crossed together at one warp yarn at the same vertical position to form a joint (4) is formed, and a plurality of joint points are continuously formed to complete the joint portion.

In this way, the triple weave portion (A) and the joint portion (B) were alternately repeated to create a triple weave with a weaving width of 63 inches (see Fig. 6).

After weaving, during heat treatment at Tenta, the first 11% shrinkage processing is performed at a processing temperature of 150℃ and a processing speed of 25 yards/min to shrink the fabric width to 56 inches, and then the second 18% shrinkage processing is applied to the fabric The width was shrunk to 46 inches for an overall shrinkage of 27%.

By this shrinkage processing, the spandex covering yarn, which is the weft yarn of the middle layer, is contracted more severely than the constituent weft yarns of the surface layer and the back layer, so that the constituent weft yarns of the surface layer and the back layer are bent around the joint point. As shown in FIG. 3, the surface layer and the back layer In this weft direction, a curved surface was formed. The physical properties of the manufactured three-dimensional trilayer fabric are measured and shown in FIGS. 7 to 10. In the test results of FIG. 9, the wale direction (weft direction) shows an elongation recovery rate of 75% and the course direction (warp direction) of 95% when measured. According to the measurement results, it was found that the shape stability of the curved surface was excellent because the elongation recovery rate of the curved surface formed in the weft direction of the surface layer and the back layer was excellent.

1: surface layer and back layer weft 2: warp
3: middle layer weft 4: junction
10: surface layer 20: back layer
A: Triple weaving part B: Jointing part

Claims (5)

delete delete delete After warping with synthetic fiber yarn as a slant,
Synthetic fiber monofilament yarn, which is the weft yarn for the surface layer and the back layer, and spandex covering yarn, which is the weft yarn for the middle layer, are woven in a triple weave, and the surface layer, the back layer, and the middle layer are formed of triple weave. The surface layer, the back layer and After weaving so that the joints where the middle layers are connected are formed alternately,
After the first 10 to 15% shrink processing at a processing temperature of 150 to 180 ° C and a processing speed of 25 to 30 yards / min, the second 15 to 20% shrink processing is performed so that the middle layer is 25% in the weft direction as a whole A method for producing a three-dimensional triple-layer fabric having excellent elasticity, characterized in that the surface layer and the back layer are curved in the weft direction by shrinking ~ 35%. delete