KR101180321B1 - Composite yarn used paper yarn and manufacturing method thereof - Google Patents

Abstract

The present invention relates to a composite yarn using a branch having reduced fineness, improved strength, and improved surface roughness, and a method of manufacturing the same, comprising: twisting a paper tape to obtain a branch, and twisting the branch and the different yarn to the branch. And twisting by applying twist more than the number of twists of the branch in the opposite direction.

Description

Composite yarn using paper and manufacturing method thereof

The present invention relates to a composite yarn using a branch having reduced fineness, improved strength and improved surface roughness, and a method of manufacturing the same.

In recent years, clothing materials have been rapidly developed due to the development of chemical fibers, but the demand for wearing eco-friendly and harmless clothes is increasing due to the improvement of living standards and the development of civilization. It is focused on developing natural fibers such as hemp and strengthening its functionality.

However, in the case of such Hanji, low and hemp yarns, the elongation is less than 3.0%. When knitting using circular knitting machines, automatic knitting machines and hosiery knitting machines, the elongation and repulsion are low, so the nose and trimming occur frequently. There is a difficult problem.

In this regard, an invention for improving elasticity by granting elongation to low-yielding yarns such as Hanji has been proposed in Korean Utility Model Publication No. 20-352850.

The Utility Model Registration No. 20-352850 relates to a covering yarn having a structure in which a polyurethane yarn is wrapped at a predetermined interval with a polyurethane elastic yarn, but has an advantage in manufacturing a thick fabric product by good elasticity inherent to polyurethane elastic yarn, The use of Hanji yarn of 500 ~ 1500 denier or more limits the application of general apparel products, and in particular, the manufacturing of knitted products is difficult.

In addition, a composite yarn for improving the elongation of low elongation yarn and a method of manufacturing the same have been proposed in Korean Patent No. 10-0689604. The above Patent No. 10-0689604 has the advantage of improving the elongation of low elongation yarns, such as the branch, but the low elongation yarn is made of a structure that covers the cotton yarn, etc., the limit to reduce the fineness and improve the strength There is.

The present invention for solving the above problems is to provide a composite yarn and a method of manufacturing the same using a branch with reduced fineness, improved strength and improved surface roughness.

The present invention for achieving the above object is a) a step of obtaining a branch by twisting the paper tape;

b) twisting the branched yarn and the heterologous yarn by twisting the branched yarn larger than the number of twisted branches of the branched yarn in the opposite direction to the twisted direction of the branched yarn.

In the step b), it is preferable that the branch yarn and the hetero yarn are twisted by adding 1.2 to 2.5 times the twist of the branch yarn.

In the step a), it is preferable to obtain a branch by applying twist in a state where water is not supplied to the paper tape, and in the step b), it is preferable to ply the heterogeneous yarn in a state where water is supplied to the branch.

In addition, the present invention provides a composite yarn characterized in that the branch and the heterogeneous yarn is made by applying twist to the paper tape is twisted larger than the number of twist of the branch in the opposite direction of the twisting direction of the branch.

In particular, the branch and the heterogeneous yarn is preferably twisted 1.2 to 2.5 times the number of twists of the branch.

The branch office is preferably made by twisting the paper tape without supplying water to the paper tape, and twisting the yarn with the different yarns while supplying water to the branch office.

Composite yarn using the branch of the present invention and a method of manufacturing the same has the effect of obtaining a composite yarn with reduced fineness, improved strength and improved surface roughness.

1 is a micrograph (× 100) of the composite yarn of Example 1 of the present invention,
2 is a micrograph (× 100) of Comparative Example 1 composite yarn.

Hereinafter, the composite yarn and the manufacturing method using the branch of the present invention will be described in detail.

The present invention largely comprises a branch manufacturing step and a joint step.

First, the branch manufacturing step is produced by applying twist to a paper tape made by cutting paper such as Hanji into a tape having a predetermined width.

The twisting method of the paper tape is not particularly limited, such as a ring spinning machine or a throwing gun twister.

Meanwhile, in the related art, in order to uniformly and smoothly apply the twist to the paper tape, twist was applied in a state in which water, steam, or the like was supplied to the paper tape. However, in the present invention, twist is applied in a state where water is not applied to the paper tape. It is good. The reason why the paper tape is twisted without adding moisture is that the branch twists in a bulky manner so that the heterologous yarn is not covered by the branch at the joint stage and the branch and the heterologous yarn are intertwined with each other.

In addition, it is better to give less twist compared to the number of twists in the conventional twisting process for manufacturing the branch. For example, the branch is manufactured by giving a twist of 0.6 to 0.85 times as compared with the conventional twist.

Next, the combining step is a step of manufacturing a composite yarn by combining the branch and the heterogeneous yarn manufactured in the branch manufacturing step larger than the number of twists of the branch in the direction opposite to the twisting direction of the branch.

The heterogeneous yarn is not limited to one or two or more selected from cellulose fibers such as cotton fibers, hemp fibers, rayon, and synthetic fibers such as PET and nylon.

In the joining step, the twist is given in the opposite direction to the twisting direction in the branch manufacturing step, and the twist is greater than the number of twists in the branch manufacturing step.

For example, when the paper tape is twisted in the Z direction in the branch manufacturing step, the branching and heterogeneous yarns are joined in the S direction in the joining step.

When joining in the opposite direction to the twisting direction of the branch in the joining step, the twist given to the branch is released again and the twist is given in the opposite direction, so that the branch becomes softer and the branch and the heterogeneous yarn are joined together unlike the conventional art. As a result, the fineness is lowered, and the strength and surface roughness are greatly improved.

And it is preferable to have a twist of 1.2 to 2.5 times as compared to the number of twists of the branch so as to have a lower degree of fineness, and have a further improved strength and surface roughness.

In addition, in the coalescing step, it is preferable to coalesce with the heterogeneous yarn in a state in which water is supplied to the branch. When combined with the heterogeneous yarn in a state where water is supplied to the branch, the heterologous yarn is coalesced into the branch, thereby increasing the strength and improving the surface roughness.

Hereinafter, the present invention will be described in detail with reference to Examples.

Example 1

The branch was manufactured by supplying 1.3mm width of Hanji paper tape from Jirisan Hanji Co., Ltd. of Namwon, Jeollabuk-do, and twisting it with 9.9 TPI in the Z direction by using a Topowon twister. And 100's cotton yarn was used as a hetero yarn. The yarn was passed through a roller immersed in water to twist the cotton yarn and twisted with 15.42TPI in the S direction while supplying water to produce a composite yarn. The micrograph of the prepared composite yarn is shown in FIG.

[Example 2]

Unlike Example 1, the composite yarn was prepared by twisting the branch and cotton yarns in the S direction at 19.3TPI.

[Example 3]

Unlike Example 1, the composite yarn was prepared by twisting the branch and cotton yarns in the S direction at 20.49 TPI.

Comparative Example 1

The paper was supplied with 1.3mm width Hanji paper tape from Jirisan Hanji Co., Ltd., Namwon Material, Jeonbuk, Korea, and twisted with 12.1 TPI in the Z direction using a two-pore twisting machine, and the paper tape was immersed in water. Twist was applied while passing moisture.

The yarn was twisted at 16.4TPI in the Z direction with a yarn of 100's in the Z direction, whereby the yarn was not supplied with moisture. The micrograph of the prepared composite yarn is shown in FIG.

[Microscopy observation]

In contrast to the micrograph of the composite yarn of Example 1 and the microscopic intensities of the composite yarn of Comparative Example 1, in the case of Comparative Example 1, the yarn is covered in the branch, whereas in the composite yarn of Example 1, the yarn and the cotton yarn are co-pumped together. You can observe the twisted structure that seems to be.

[Measurement of Fineness and Strength]

The fineness and the intensity of the Examples 1 to 3 and Comparative Example 1 were measured, respectively, and the results are shown in Table 1 below.

Example 1 Example 2 Example 3 Comparative Example 1 Denier 225 233 223 254 Tensile strength (g / d) 1.60 1.59 1.77 0.977

As shown in Table 1, in the case of the composite yarns of Examples 1 to 3, the fineness decreased to 233 denier or less than Comparative Example 1, and the tensile strength was significantly improved to 1.59 g / d or more compared to 0.977 g / d of Comparative Example 1. You can check it.

[Characteristic characteristics]

Surface roughness (SMD), coefficient of friction (MIU) and coefficient of friction standard deviation (MMD), which are the characteristics of fabrics woven from the composite yarns of Example 1 and Comparative Example 1, were measured and shown in Table 2. And as a comparative example 2, 100% cotton fabric was used.

Surface characteristics Example 1 Comparative Example 1 Comparative Example 2 MIU (-) 0.213 0.217 0.207 MMD (-) 0.0246 0.0241 0.0219 SMD (μm) 13.955 14.45 13.225

As shown in Table 2, Comparative Example 1 has the highest surface roughness value, and in Example 1, the improved surface roughness and the surface friction coefficient may be observed. In the case of Example 1, the yarn and the cotton yarn are not the twisting structure of the covering yarn as in Comparative Example 1, and as the yarn is twisted together with the cotton yarn in the opposite direction in the twisted state, the cotton yarn enters into the yarn and is joined together to increase physical properties. It is believed to be the result of the smooth surface.

Claims (8)

a) applying a twist to the paper tape to obtain a branch;
b) twisting the branched yarn and the heterologous yarn by twisting the branched yarn larger than the number of twists of the branched yarn in a direction opposite to the twisting direction of the branched yarn.
The method of claim 1,
The step b) is a method of manufacturing a composite yarn using a branch, characterized in that the yarn and the hetero yarn added by twisting 1.2 ~ 2.5 times twisted than the number of twists of the branch.
The method of claim 2,
The step a) is a method of manufacturing a composite yarn using a branch, characterized in that the step of obtaining a branch by applying twist in a state of not supplying water to the paper tape.
The method of claim 3,
The step b) is a method for manufacturing a composite yarn using a branch, characterized in that the step of coalescing with the heterogeneous yarn in the state of supplying water to the branch.
The composite yarn characterized in that the yarn and the heterogeneous yarn produced by applying twist to the paper tape is twisted in a direction opposite to the twisting direction of the branch, which is larger than the number of twists of the branch.
The method of claim 5,
The branch and the hetero yarn is twisted 1.2 to 2.5 times more than the twisted yarn of the branch composite yarn, characterized in that made.
The method of claim 6,
Said branch is a composite yarn, characterized in that to use the one produced by applying twist in a state that does not supply water to the paper tape.
The method of claim 7, wherein
Composite yarn characterized in that the yarn is added by twisting and twisting with the hetero yarn in the state of supplying water to the branch.

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