KR102657889B1 - Manufacturing Method for Flat Type Yarn with Two Shrinkage Mixed Fiber - Google Patents

Abstract

The method for manufacturing a two-shrink mixed yarn three-dimensional type slub yarn of the present invention includes preparing a spun core yarn (1); Preparing bind yarn (2) made of filament yarn; Supplying the prepared core yarn (1) lengthwise; Covering the bind yarn (2) prepared on the outer periphery of the supplied core yarn (1), and turning the TPM (turns per meter) relative to the winding section so that the TPM (turns per meter) is high relative to the outer circumference of the core yarn (1) A covering step of winding the bind yarn (2) so that the winding sections are alternated so that the per meter is low, so that the shrinkage rates of the core yarn (1) in the diametric direction are different from each other by covering the bind yarn (2). ; It is characterized by comprising:

Description

{Manufacturing Method for Flat Type Yarn with Two Shrinkage Mixed Fiber}

The present invention relates to a method for manufacturing a two-shrink mixed yarn flat type yarn that allows different types of yarn to be maintained in a flat state while in contact with each other.

Flat yarn is a yarn processed into a flat shape with a certain width.

A method of manufacturing such flat yarn includes a method of heat-sealing a uniaxially stretched base layer and a surface layer on one or both sides of the base layer, which is disclosed in Japanese Patent No. 4157482 (title of the invention: Biodegradable Flat Yarn) , foam and sheet).

Since the flat yarn undergoes uniaxial stretching and is bonded by heat fusion, there are problems in that processing is complicated, the equipment is expensive, and processing costs are high. In addition, since it is a flat type and is uniaxially stretched and then heat-sealed, the width of the flat yarn is considerably wider than that of regular yarn, making it unsuitable for fabrics woven by weaving or knitting, making it a yarn with a wider width than fabric. It is generally used in sacks, gunny bags, etc.

Therefore, there is a need to develop a method for manufacturing flat yarn that can be applied to cloth using general yarn.

Registered Patent Publication No. 10-1884227

The present invention was devised to solve the above problems, and the purpose of the present invention is to improve the problems of conventional flat yarns processed by uniaxial stretching and heat fusion, so that they can be applied to cloth using general yarns. The purpose is to provide a method for manufacturing a two-shrink mixed flat type yarn.

The present invention for achieving the above object includes preparing a first core yarn (1) and a second core yarn (2); Preparing a first bind yarn (3) and a second bind yarn (4) to be covered with the first core yarn (1) and the second core yarn (2); Supplying the prepared first core yarn (1) and second core yarn (2) adjacent to each other in the longitudinal direction; The first core yarn (1) and the second core yarn (2) are arranged adjacent to each other in the longitudinal direction so that the central axes of each are located on the same plane. A first covering step of wrapping the outer periphery of ) in a first direction with a first bind yarn (3); And the first core yarn (1) and the second core yarn (2) arranged adjacent to each other in the longitudinal direction so that the central axes of each are located on the same plane. 2) A second covering step of wrapping the outer periphery of the yarn with a second bind yarn (4) in a second direction opposite to the first direction.

According to one embodiment of the present invention, the first core yarn (1) and the second core yarn (2) are spun yarns, and the first bind yarn (3) and the second bind yarn (4) are filament yarns. You can.

In addition, the first core yarn (1) and the second core yarn (2) are spun yarns, and the first core yarn (1) and the second core yarn (2) may be supplied so that the twist directions are opposite to each other. .

In addition, if the number of twists of the first core yarn (1) is smaller than the number of twists of the second core yarn (2), the first core yarn (1) among the first binder yarn (3) and the second binder yarn (4) ) can be covered so that the twist number of the binder yarn wound in the same direction as the twist direction of ) is greater than the twist number of other binder yarns.

Additionally, the thickness of the first and second bind yarns 3 and 4 may be 1/4 to 1/6 of the thickness of the first and second core yarns 1 and 2.

Additionally, the present invention provides a two-shrink mixed yarn flat type yarn manufactured by the manufacturing method of the present invention.

In addition, the present invention provides a fabric woven or knitted using the two-shrink mixed flat type yarn according to the present invention.

The yarn manufactured by the method of manufacturing the double-shrink mixed yarn flat type yarn of the present invention with the above configuration has improved stress relief and torsion balance of the spun core yarn, allowing the yarn to maintain smoothness. Accordingly, fabrics woven or knitted using manufactured flat-type yarns can also maintain smoothness, which has the advantage of contributing to maintaining the shape of the fabric by reducing deformation such as weeping, stretching, or shrinking of the woven or knitted fabric. . In addition, the quality of fabric can be improved by reducing the volume of slub generated after spinning of core yarn and reducing fluff that may be generated by washing. In addition, by improving the problems of conventional flat yarns processed by uniaxial stretching and heat fusion, it is possible to manufacture general yarns with a smaller width than conventional flat yarns in a flat type, which increases the range of application for textiles compared to conventional flat yarns. There is an advantage of being wider.

Figure 1 is a diagram showing the structure of a bi-shrink mixed flat type yarn of the present invention.
Figure 2 is a diagram showing a method for manufacturing a two-shrink mixed flat type yarn of the present invention.

Hereinafter, the method for manufacturing a double-shrink mixed yarn flat type yarn of the present invention will be described in detail with reference to the drawings.

Referring to Figures 1 and 2, the two-shrink mixed yarn flat type yarn according to an embodiment of the present invention includes a first core yarn (Core Yarn) (1) preparation step; Second core yarn (2) preparation stage; First bind yarn (3) preparation step; Second bind yarn (4) preparation stage; Supplying the first core yarn (1) and the second core yarn (2); A first covering step of winding the first bind yarn (3) in a first direction; A second covering step of winding the second bind yarn 4 in a second direction opposite to the first direction may be performed.

First, the step of preparing the first core yarn (1) (S100) and the step of preparing the second core yarn (2) (S200) are performed. At this time, steps S100 and S200 may be performed in any order.

The first core yarn (1) and the second core yarn (2) are spun yarns, such as cotton, rayon (Coray, viscose, Polynosic, Julon, Modal, Lyocell, Tencel, Cupra, Bemberg ( Bemberg, etc.), inorganic fibers (metal fibers, glass fibers, etc.), organic fibers (Casein Fiber, Recycle Silk, Zein Fiber, etc.), and recycled fibers (natural rubber fibers, alginate fibers, etc.). .

Additionally, the first core yarn 1 and the second core yarn 2 may be yarns made of different materials, or may be yarns made of the same material. For example, when the first core yarn (1) and the second core yarn (2) are made of different materials, it is possible to have two tone patterns and textures with one flat type yarn, and each spun yarn Two functions can be performed depending on the material.

In addition, as another example, even when the first core yarn (1) and the second core yarn (2) are yarns of the same material, if each spun yarn has a different twist number, the first core yarn (1) and As in the case where the second core yarn 2 is made of different materials, it is possible to have two tone patterns and textures with one flat type yarn, and two functions can be expressed according to different twist numbers. You can.

In addition, a first bind yarn (3) to be covered with the first core yarn (1) and the second core yarn (2) is prepared (S300), and the first core yarn (1) and the second core yarn (2) are prepared (S300). Prepare a second bind yarn (4) to cover the core yarn (2) (S400). At this time, steps S300 and S400 may be performed in any order. Additionally, steps S100 to S400 may also be performed independently and in any order.

The first bind yarn (3) and the second bind yarn (4) may be, for example, filament yarns, and through this, the slub caused by the first core yarn (1) and the second core yarn (2) provided as spun yarns is formed. It is advantageous to prevent The first bind yarn 3 and the second bind yarn 4 can be used without limitation as long as they are known materials that can be manufactured into filament yarns. As an example, the first bind yarn 3 and the second bind yarn 4 are made of polyester, nylon, PTT (polytetramethylene terephthalate), PBT (polybutylene terephthalate), PP (polypropylene), etc. It may be a filament yarn having any material.

Next, a step (S500) of supplying the prepared first core yarn 1 and the second core yarn 2 adjacent to each other in the longitudinal direction is performed.

At this time, the twist direction of the first core yarn 1 and the second core yarn 2 is opposite to each other, for example, the twist direction of the first core yarn 1 is clockwise (S twist) or In the case of a counterclockwise direction (Z twist), the twisted direction of the second core yarn 2 may be counterclockwise (Z twist) or clockwise (S twist), which is advantageous for achieving the desired effect of the present invention. You can.

Next, the first core yarn (1) and the second core yarn (2) are arranged adjacent to each other in the longitudinal direction so that the central axes of each are located on the same plane. A first covering step (S600) is performed in which the outer circumference of (2) is wound in the first direction with the first bind yarn (3).

In addition, the first core yarn (1) and the second core yarn (2) are disposed adjacent to each other in the longitudinal direction so that the central axes of each are located on the same plane. A second covering step (S700) is performed in which the outer circumference of (2) is wound with a second bind yarn (4) in a second direction opposite to the first direction.

If the first direction in which the first bind yarn 3 in the first covering step is wound and the second direction in which the second bind yarn 4 in the second covering step is wound are opposite to each other, then in the longitudinal direction The central axes of each of the first core yarn 1 and the second core yarn 2 supplied adjacent to each other may be positioned continuously on the same plane in the longitudinal direction. That is, it is possible to maintain stress relief and torsion balance between the supplied first core yarn (1) and the second core yarn (2), thereby preventing twisting of the flat yarn and maintaining a flat yarn. It is advantageous for maintaining the condition, and this improves the weaving or knitting properties, and the smoothness of the woven or knitted fabric can be excellent. In particular, it is possible to prevent the fabric from weeping, stretching, or shrinking regardless of the structure of the fabric despite washing. It has the advantage of contributing to maintaining the shape of the fabric by reducing deformation.

In addition, the quality of the fabric can be improved by reducing the volume of slub generated after spinning the core yarn and reducing the fluff that may be generated by washing. In addition, by improving the problems of the conventional flat yarn processed by uniaxial stretching and heat fusion, it can be manufactured as a flat type using yarn such as general spun yarn whose width is smaller than that of conventional flat yarn, making the fabric more attractive than conventional flat yarn. It has the advantage of widening the scope of application.

In addition, if the number of twists of the first core yarn (1) is smaller than the number of twists of the second core yarn (2), the first core yarn (1) among the first binder yarn (3) and the second binder yarn (4) ) can be covered so that the twist number of the binder yarn wound in the same direction as the twist direction of ) is greater than the twist number of other binder yarns. For example, the twist direction of the first core yarn (1) and the winding direction of the second bind yarn (4) may be the same, and the twist direction of the second core yarn (2) and the winding direction of the first bind yarn (3) may be the same. The winding direction may be the same. At this time, if the number of twists of the first core yarn (1) is smaller than the number of twists of the second core yarn (2), the number of twists of the second bind yarn (4) is the number of twists of the first bind yarn (3) It is preferred that the covering step is performed to a larger extent. In this case, it is possible to relieve stress and maintain torsion balance between the supplied first core yarn (1) and the second core yarn (2), so that the yarn is not twisted and is flat. It is advantageous to maintain .

In addition, according to one embodiment of the present invention, the thickness of the first and second bind yarns 3 and 4 is 1/4 to 1/6 of the thickness of the first and second core yarns 1 and 2. desirable. At this time, the thickness of the four types of yarn is determined by the length of the yarn, and for example, the unit of thickness may be tex.

When the thickness of the first and second bind yarns (3 and 4) independently becomes less than 1/6 of the thickness of the first and second core yarns (1 and 2), the first and second bind yarns (3, When 4) is wound around the outer peripheral surface of the first and second core yarns (1, 2), it is buried in the first and second core yarns (1, 2), thereby reducing the slub reduction effect, and reducing the slub that may be generated by washing, etc. There is a problem that the effect of reducing possible fluff is reduced.

When the thickness of the first and second bind yarns (3 and 4) independently exceeds 1/4 of the thickness of the first and second core yarns (1 and 2), the overall thickness of the yarn becomes thick and weaving Alternatively, the knitted fabric may be significantly deformed, such as weeping or stretching, which may adversely affect the shape maintenance of the fabric and reduce its smoothness.

In addition, according to an embodiment of the present invention, during the first covering step and the second covering step, the thicker the first and second bind yarns (3, 4), the thicker the first and second bind yarns (3, 4). ) It is desirable to cover by adjusting the number of twists to a relatively low level, which improves the torsion balance and allows the yarn to remain flat. As a result, the woven or knitted fabric also maintains smoothness. It is advantageous.

If the thickness of the first and second bind yarns (3, 4) is thick and the number of twists of the first and second bind yarns (3, 4) is covered relatively large, the first and second bind yarns (3, 4) As the tension in 4) increases, the torsion balance deteriorates and the yarn cannot maintain a flat state, which has the disadvantage of making it difficult to maintain smoothness in woven or knitted fabrics.

In addition, according to an embodiment of the present invention, when supplying the first and second core yarns 1 and 2, the first and second core yarns 1 and 2 have an elongation of 0.01 to 0.05% of the original length, More preferably, it is supplied stretched at an elongation rate of 0.03 to 0.05%, and when covering the first and second bind yarns (3, 4), the first and second bind yarns (3, 4) are 0.1% shorter than their original length. It is preferable to simultaneously cover the first and second core yarns (1, 2) while being stretched at an elongation rate of 0.2%. Through this, after covering, the first and second core yarns (1, 2) and the first and second core yarns (1, 2) It is possible to improve the bonding strength of the bind yarns (3, 4), thereby preventing separation of the first and second core yarns (1, 2) and the first and second bind yarns (3, 4), so that the yarn And by using this, the quality of woven or knitted cloth can be improved.

However, when supplying the first and second core yarns (1, 2) and covering the first and second bind yarns (3, 4), the first and second core yarns (1, 2) and the first , 2 If the elongation rate of the bind yarns (3, 4) is excessively increased, the elasticity may become too large and twisting may occur in the flat yarn, which may make it difficult to maintain the shape of the manufactured fabric. In addition, if flat yarn is manufactured with an elongation less than the above, there is a risk that the pilling properties will be weakened and the generation of fluff will increase during washing.

In addition, the first and second bind yarns 3 and 4 of the present invention can be used to provide functionality to the fabric by using filament yarns with functionality such as anti-fouling and anti-static properties.

Hereinafter, the present invention will be described in more detail through examples. However, the following examples do not limit the scope of the present invention, and should be interpreted to aid understanding of the present invention.

<Example 1>

Prepare cotton spun yarns of 45 tex each as the first and second core yarns, with the same number of twists and opposite twist directions, and polytrimethylene terephthalate (PTT) of 11 tex as the first and second bind yarns. ) Filament mono yarn was prepared.

Afterwards, the two types of core yarns prepared in the composite covering machine were supplied side by side and adjacent to each other in the longitudinal direction, and the outer circumferences of the two types of core yarns were covered in different directions with the first bind yarn and the second bind yarn, respectively.

At this time, the two types of core yarns supplied were supplied stretched at an elongation rate of 0.03% compared to the length of the supplied core yarn, and the two types of bind yarns were supplied side by side and adjacent to each other with an elongation rate of 0.15%. Two-shrink mixed flat type yarn was manufactured by supplying each core yarn covering in different directions.

<Examples 2 to 9>

Manufacture in the same manner as in Example 1, but change the thickness of the 2 types of core yarn and the 2 types of bind yarn, the ratio of the number of twists, and/or the elongation at supply as shown in Table 1 below to produce a two-shrink mixed yarn flat type yarn. did.

<Experimental example>

The bi-shrink mixed flat type yarn prepared in the example was supplied as yarn to a knitting machine to produce a weft knit with a flat knit structure, and then the following physical properties were evaluated, and the results are shown in Table 1 below.

1. Flat yarn flatness

An expert visually judged whether the implemented flat type yarn was flat in the longitudinal direction and evaluated whether the central axes of the first core yarn and the second core yarn per 10 m were located on the same plane in the longitudinal direction. Twist was defined as a change in the plane on which the central axis lies, and the length of the twisted part per 10 m was calculated as a percentage.

2. Peeling properties

It was evaluated using the KS K 0499 random tumble pilling test technique, and is rated on a scale of 1 to 5. Grade 1 refers to cases where fluff occurs so much that it covers the specimen, and grade 5 refers to cases where no fluff occurs on the specimen.

3. Smoothness

After manufacturing a specimen with the width and height of the weft knit fabric measuring 60cm x 60cm, 10 experts visually observed it and evaluated its smoothness. The average value was then calculated by counting the scores with 10 being very good and 1 being very poor. .

Example 1 Example 2 Example 3 Example 4 Example 5 Example 6 Example 7 Example 8 Example 9 2 types of core yarn
(A) Thickness (tex) 45 45 45 45 45 45 45 45 45 Elongation rate (%) 0.03 0.03 0.03 0.03 0.01 0.05 0.07 0.03 0.03 Type 2 binder yarn (B) Thickness (tex) 11 15 7.5 5.0 11 11 11 11 11 Elongation rate (%) 0.15 0.15 0.15 0.15 0.15 0.15 0.15 0.05 0.25 Thickness ratio (A) : (B) 4.1:1 3:1 6:1 9:1 4.1:1 4.1:1 4.1:1 4.1:1 4.1:1 Flat Yarn Flatness (%) 0.8 8.8 - 1.0 2.0 1.0 7.5 2.2 7.6 Peeling 4.0 4.5 4.0 1.5 2.5 4.0 4.5 3.0 4.5 Smoothness
(60㎝×60㎝) 8.8 4.5 8.5 7.0 8.0 8.8 5.0 8.0 5.2

As can be seen in Table 1,

Examples 1 and 3, in which the thickness ratio between the two types of core yarns and the two types of bind yarns are within the range of the present invention, show that the flatness, pilling properties, and smoothness of the flat yarn are very excellent compared to Examples 2 and 4, which deviate from this. Able to know.

In addition, flat yarn flatness, pilling properties, and smoothness may vary depending on the degree of elongation of the two types of core yarns and the two types of bind yarns supplied in the manufacturing process. Specifically, Examples 1 and 6 are different from Examples 5 and 7. It can be seen that the effect is excellent compared to ~9.

Although one embodiment of the present invention has been described above, the spirit of the present invention is not limited to the embodiment presented in the present specification, and those skilled in the art who understand the spirit of the present invention can add components within the scope of the same spirit. , other embodiments can be easily proposed by change, deletion, addition, etc., but this will also be said to be within the scope of the present invention.

1, 2: 1st, 2nd Core Yarn
3, 4: 1st, 2nd bind yarn
10: Flat type yarn

Claims (7)

Preparing a first core yarn (1) and a second core yarn (2), which are cotton spun yarns;
The first bind yarn (3) is 1/4 to 1/6 the thickness of the first core yarn (1) and the second core yarn (2) and is made of polytrimethylene terephthalate filament yarn. ) and preparing a second bind yarn (4);
Supplying the prepared first core yarn (1) and second core yarn (2) each stretched at an elongation rate of 0.03 to 0.05% and adjacent to each other in the longitudinal direction so that each twist direction is opposite to each other;
The first core yarn (1) and the second core yarn (2) are arranged adjacent to each other in the longitudinal direction so that the central axes of each are located on the same plane. A first covering step of wrapping the outer circumference of ) in a first direction with a first bind yarn (3) stretched at an elongation rate of 0.1 to 0.2%; and
The first core yarn (1) and the second core yarn (2) are arranged adjacent to each other in the longitudinal direction so that the central axes of each are located on the same plane. Manufacture of a two-shrink mixed flat type yarn comprising a second covering step of winding the outer periphery of ) in a second direction, which is opposite to the first direction, with a second bind yarn (4) stretched at an elongation rate of 0.1 to 0.2%. method. delete delete According to paragraph 1,
If the number of twists of the first core yarn (1) is smaller than the number of twists of the second core yarn (2), the number of twists of the first core yarn (1) among the first binder yarn (3) and the second binder yarn (4) A method of manufacturing a bi-shrink mixed yarn flat type yarn, characterized in that the binder yarn wound in the same direction as the twist direction is covered so that the number of twists is greater than the number of twists of other binder yarns.
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