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A kind of preparation method of high elasticity covered yarn

A technology of covering yarn and high elasticity, which is applied in the direction of yarn, textiles and papermaking, etc. It can solve the problems of high price and large production investment, and achieve the effect of improving processing performance, reducing cost and obvious toughness recovery effect

Active Publication Date: 2017-10-24
NINGBO WUTIAN TEXTILE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, spandex is currently the most widely used elastic fiber in the world. Its superior elasticity cannot be replaced by other fibers, but it is expensive and requires a large production investment. Therefore, it is necessary to research and develop fibers with reasonable prices and easy processing to meet market needs.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • A kind of preparation method of high elasticity covered yarn
  • A kind of preparation method of high elasticity covered yarn
  • A kind of preparation method of high elasticity covered yarn

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preparation example Construction

[0022] The embodiment of the present invention discloses a method for preparing a high-elastic covered yarn, which includes the following steps: winding two PBT / PET composite filaments in a spiral to form a main rib; winding the first braided rope with positive twist on the main rib, The second braided rope is helically reverse-twisted and wound on the main rib, and the first braided rope and the second braided rope are independently prepared according to the following method: L-polylactic acid, right-handed polylactic acid and polylactic acid / silk The plain protein copolymer is melt-spun to obtain toughened L-shaped polylactic acid fibers containing a D-shaped structure; multiple toughened L-shaped polylactic acid fibers containing a D-shaped structure are wound.

[0023] In the present invention, two-component polyester fiber is used as the main rib, and the outside is covered with L-type polylactic acid fiber. By adding a certain amount of D-type polylactic acid to L-type po...

Embodiment 1

[0036] The preparation process of PBT / PET composite fiber is:

[0037] Mix PBT and PET resin materials according to the mass ratio of 4:1. After drying in vacuum at 70°C, put them into the spinning hopper together. Raise the temperature to 245°C to completely melt the mixed resin. At 3000m / min The mixed resin is extruded and spun at high speed, and the primary composite filament is collected from the winding drum, and the PBT / PET composite filament is obtained after stretching and shaping.

[0038] The preparation process of polylactic acid / silk fibroin copolymer is as follows: add a certain amount of silk fibroin, lactide, stannous chloride and p-toluenesulfonic acid, stannous chloride and p-toluenesulfonic acid, etc. The amount of material is used, and the amount of stannous chloride is 0.5% of lactide, the molar ratio of silk fibroin and lactide is 8: 100, start the stirrer, vacuumize until the pressure of the reaction system is -0.1MPa, Maintain the temperature of the oil...

Embodiment 2

[0042] The preparation process of PBT / PET composite fiber is:

[0043] Mix PBT and PET resin materials according to the mass ratio of 3:2. After drying in vacuum at 70°C, put them into the spinning hopper together. Raise the temperature to 245°C to completely melt the mixed resin. At 2950m / min The mixed resin is extruded and spun at high speed, and the primary composite filament is collected from the winding drum, and the PBT / PET composite filament is obtained after stretching and shaping.

[0044] The preparation process of polylactic acid / silk fibroin copolymer is: add a certain amount of silk fibroin, lactide, stannous chloride and p-toluenesulfonic acid, stannous octoate and p-toluenesulfonic acid in the reaction device successively and the amount of stannous chloride is 0.7% of lactide, the molar ratio of silk fibroin and lactide is 12:100, start the stirrer, vacuumize the pressure of the reaction system to -0.1MPa, maintain Copolymerization was carried out at an oil bat...

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Abstract

The invention provides a method for preparing a high-elastic covering yarn, which combines fibers of different materials by setting main ribs and wrapping parts. First, PBT / PET composite yarn is used as the main reinforcement, and the good durability, dimensional stability and good elasticity of PBT fiber are used. At the same time, the addition of PET reduces the cost of the fiber and improves the processing performance of PBT. Second, polylactic acid is used as the coating layer to take advantage of the good wearing comfort, touch and antibacterial properties of polylactic acid fibers, avoiding the addition of additional antibacterial properties. Third, taking advantage of the strong interaction between silk fibroin and polylactic acid and the slight inhibition of the formation of stereocomplex crystals, the copolymer of polylactic acid and silk fibroin is used as a toughening modifier to alleviate the deformation caused by the shape. The brittleness of polylactic acid increases due to the formation of structural complex crystals. Therefore, the covered yarn prepared by the present invention has good elasticity and heat resistance.

Description

technical field [0001] The invention relates to the technical field of textiles, in particular to a method for preparing a high-elastic covered yarn. Background technique [0002] Covered yarn is a new type of yarn structure, which uses filament or short fiber as the yarn core, and is wrapped with another yarn sliver that is wound and covered in a certain way, and it can also be filament or short fiber. Covered yarn is generally used for spinning women's underwear, maternity pants, pantyhose, swimwear and tights, etc. clothing products that are in close contact with the human body. The basic requirements for it are evenness, fluffiness, high strength, and less broken ends Wait. [0003] Since the covered yarn is in direct contact with the human body for a long time, there are high requirements for its comfort and antibacterial properties. Polylactic acid fiber is a new type of eco-friendly fiber with superior performance. The softness of the fabric made of polylactic acid...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D02G3/36D02G3/04
Inventor 梁高峰孙金兵刘晓宜
Owner NINGBO WUTIAN TEXTILE