Soft high-shrinkage polyester composite yarn

Abstract

The utility model discloses a soft high-shrinkage polyester composite filament which comprises a composite filament body, and the composite filament body comprises a shrinkage core layer and a soft outer layer. The flexible outer layer is coated outside the shrinkage core layer; the shrinkage core layer comprises high-shrinkage polyester filaments; spandex wrap yarn is arranged on the periphery of the high-shrinkage polyester filament yarn. And the high-shrinkage polyester filament yarns and the spandex wrap yarns are twisted and wound together. Based on the soft high-shrinkage terylene composite filament, a skin-core structure combining the shrinkage core layer with the soft outer layer is adopted, so that on one hand, the composite filament main body is endowed with good elasticity and fatigue resistance, and on the other hand, the composite filament has full and soft hand feeling; in addition, the sheath-core polylactic acid filaments spirally wound outside the composite filament main body can reduce the extension of floating fibers on the surface of the soft outer layer, so that the anti-pilling performance of the composite filament main body is improved; therefore, the soft high-shrinkage polyester composite yarn is an ideal material for cuffs and necklines of woolen sweaters.

Description

Technical Field

[0001] The utility model relates to the technical field of composite yarns, in particular to a soft high-shrinkage polyester composite yarn. Background Art

[0002] With the improvement of people's living standards, people are more demanding on clothing that is light, soft, elastic, good in extensibility and drape, good in breathability, novel in style and bright in color. Since these demands are exactly the advantages of wool sweaters, wool sweaters occupy an increasingly important position in the entire clothing field. However, after wearing wool sweaters for a long time, their cuffs and necklines will become loose and bulky, which is very inappropriate and affects the appearance. Cuffs and necklines woven directly with ordinary elastic yarns are not soft and comfortable enough. Therefore, it is necessary to develop a soft and high-shrinkage polyester composite yarn as an ideal material for the cuffs and necklines of wool sweaters. Utility Model Content

[0003] The utility model aims to provide a soft high-shrinkage polyester composite yarn, which aims to solve the problems raised in the above background technology.

[0004] In order to solve the above technical problems, the purpose of the utility model is achieved as follows: a soft high-shrinkage polyester composite yarn, comprising: a composite yarn main body, the composite yarn main body comprising a shrinkage core layer and a soft outer layer; the soft outer layer is coated on the outside of the shrinkage core layer; the shrinkage core layer comprises high-shrinkage polyester filaments; spandex coated yarns are arranged around the high-shrinkage polyester filaments; the high-shrinkage polyester filaments and the spandex coated yarns are entangled together by twisting.

[0005] On the basis of the above scheme and as a preferred scheme of the above scheme: the spandex coated yarn has spandex filaments as the core and is spirally wound with nylon filaments on the outside.

[0006] On the basis of the above scheme and as a preferred scheme of the above scheme: the nylon filament is an antibacterial nylon high-elastic yarn.

[0007] On the basis of the above solution and as a preferred solution of the above solution: the soft outer layer is a sea-island fiber layer.

[0008] On the basis of the above solution and as a preferred solution of the above solution: the soft outer layer is a cashmere fiber layer.

[0009] On the basis of the above scheme and as a preferred scheme of the above scheme: the composite wire body is spirally wound with sheath-core type polylactic acid filaments outside; the core layer of the sheath-core type polylactic acid filaments is high melting point polylactic acid, and the sheath layer is low melting point polylactic acid.

[0010] The beneficial effects of the utility model are as follows: based on the soft and highly shrinkable polyester composite yarn of the utility model, a sheath-core structure of a shrinkable core layer combined with a soft outer layer is adopted, which, on the one hand, gives the composite yarn body good elasticity and fatigue resistance, and on the other hand, has a plump and soft hand feel; in addition, the sheath-core polylactic acid filaments spirally wound on the outside of the composite yarn body can reduce the extension of floating fibers on the surface of the soft outer layer, and improve the anti-pilling performance of the composite yarn body; therefore, the soft and highly shrinkable polyester composite yarn is an ideal material for the cuffs and collars of wool sweaters. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the cross-sectional structure of the composite wire body involved in the utility model;

[0012] Figure 2 This is a schematic diagram of the structure of the soft high-shrinkage polyester composite yarn involved in the utility model;

[0013] In the figure: 1-composite yarn body, 2-shrinkage core layer, 3-soft outer layer, 21-high shrinkage polyester filament, 22-spandex coated yarn, 4-skin-core type polylactic acid filament. DETAILED DESCRIPTION

[0014] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments.

[0015] Embodiment 1

[0016] Combination Figure 1-2 The present embodiment is described in detail. A soft high-shrinkage polyester composite yarn comprises: a composite yarn main body 1, wherein the composite yarn main body 1 comprises a shrinkage core layer 2 and a soft outer layer 3; the soft outer layer 3 is coated on the outside of the shrinkage core layer 2; the shrinkage core layer 2 comprises high-shrinkage polyester filaments 21; spandex coated yarns 22 are arranged around the high-shrinkage polyester filaments 21; the high-shrinkage polyester filaments 21 and the spandex coated yarns 22 are entangled together by twisting.

[0017] Specifically, the boiling water shrinkage of the high shrinkage polyester is between 50-60%. It is prepared by controlling the spinning process parameters and the fiber forming structure during the polyester melt direct spinning production process. Specifically, the boiling water shrinkage of the fiber can be increased by reducing the temperature of the second hot roller and the draft ratio. As a shrinkage core layer, it can enhance the elasticity of the composite yarn body 1 and give it sufficient strength, elongation and fatigue resistance. The shrinkage core layer 2 is combined with a soft outer layer 3. This skin-core structure can improve the elasticity and fatigue resistance of the composite yarn body 1 on the one hand, and has a plump and soft feel on the other hand, which is an ideal material for the cuffs and collars of wool sweaters.

[0018] Furthermore, the spandex coated yarn 22 has spandex filaments as the core and nylon filaments spirally wound around the outside. The spandex coated yarn 22 not only has the high elasticity and good elongation performance of spandex, but also makes up for the lack of strength performance, and improves its strength while maintaining the elasticity of spandex.

[0019] Furthermore, the nylon filament is an antibacterial nylon high-elastic yarn. Specifically, the antibacterial nylon high-elastic yarn has a fineness of 16.7 tex, has good elasticity, is soft and smooth, and has good antibacterial and moisture-conducting functions.

[0020] Furthermore, the soft outer layer 3 is a sea-island fiber layer. Specifically, the "island" of the sea-island fiber is polyester, and the "sea" component uses polyvinyl alcohol that is easily soluble in water. After being treated with hot water at 75-80°C, ultrafine fibers can be obtained. With the reduction of fiber size, the fiber diameter becomes thinner, and the fiber surface area per unit mass increases. The increased surface area enhances the fiber's coating ability and greatly improves the moisture absorption performance. With its tiny fineness, the sea-island fiber can make the composite silk body 1 soft and smooth, with obvious comfort and a plump and delicate appearance.

[0021] Furthermore, the outer part of the composite yarn body 1 is spirally wound with a core-sheath type polylactic acid filament 4; the core layer of the core-sheath type polylactic acid filament 4 is a high-melting point polylactic acid, and the skin layer is a low-melting point polylactic acid. Specifically, in this embodiment, the melting point of the high-melting point polylactic acid is 170-180°C, the melting point of the low-melting point polylactic acid is 125-135°C, and the volume ratio of the skin layer to the core layer is 30-50:50-70. After being treated at a temperature higher than the melting point of the low-melting point polylactic acid and lower than the melting point of the high-melting point polylactic acid, the low-melting point polylactic acid as the skin layer will melt, and the fibers in contact with it will bond, reducing the extension of the floating fibers on the surface of the soft outer layer 3, and improving the anti-pilling performance of the composite yarn body 1.

[0022] Embodiment 2

[0023] The difference from the first embodiment is that the soft outer layer 3 is a cashmere fiber layer. Cashmere fiber is a thin layer of fine wool that grows on the outer epidermis of goats and hides at the root of the goat's coarse hair. The special molecular structure of cashmere can absorb water vapor into the vacuum structure, and cashmere can absorb 35% of moisture, so that the composite silk body 1 remains dry and warm when in contact with the user. Cashmere fiber has the advantages of being fluffy and soft, not stiff. The natural elasticity of cashmere is greater than 40%, and it can recover to 90% of its original state after being pressed. Based on the characteristics of cashmere fiber, the composite silk body has excellent characteristics such as soft texture, soft luster, light and warm, comfortable and elastic.

[0024] The preferred specific embodiments of the utility model are described in detail above. It should be understood that ordinary technicians in this field can make many modifications and changes based on the concept of the utility model without creative work. Therefore, all technical solutions that can be obtained by technicians in this technical field based on the concept of the utility model through logical analysis, reasoning or limited experiments on the basis of the existing technology should be within the scope of protection determined by the claims.

Claims

1. A soft high shrinkage polyester composite yarn, characterized in that: include: A composite yarn body (1), the composite yarn body (1) comprising a shrinkable core layer (2) and a soft outer layer (3); the soft outer layer (3) is coated on the outside of the shrinkable core layer (2); the shrinkable core layer (2) comprises high-shrinkage polyester filaments (21); spandex coated yarns (22) are arranged around the high-shrinkage polyester filaments (21); the high-shrinkage polyester filaments (21) and the spandex coated yarns (22) are entangled together by twisting.

2. The soft high shrinkage polyester composite yarn according to claim 1, characterized in that: The spandex coated yarn (22) has spandex filaments as the core and nylon filaments are spirally wound around the outside.

3. The soft high shrinkage polyester composite yarn according to claim 2, characterized in that: The nylon filaments are antibacterial nylon high-elastic yarns.

4. The soft high shrinkage polyester composite yarn according to claim 1, characterized in that: The soft outer layer (3) is a sea-island fiber layer.

5. The soft high shrinkage polyester composite yarn according to claim 1, characterized in that: The soft outer layer (3) is a cashmere fiber layer.

6. The soft high shrinkage polyester composite yarn according to claim 1, characterized in that: The composite wire body (1) is spirally wound with a sheath-core type polylactic acid filament (4) on the outside; the core layer of the sheath-core type polylactic acid filament (4) is high melting point polylactic acid, and the sheath layer is low melting point polylactic acid.

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