Manufacturing method for irregular-section differential-shrinkage polyester filament yarn

A technology of polyester filament and manufacturing method, applied in filament/thread forming, single-component polyester artificial filament, textile and papermaking, etc., can solve the problems of increased manufacturing cost and complicated spinning process, and achieve high economic benefits , the effect of flexible production methods

Active Publication Date: 2011-08-17
SUZHOU LONGJIE SPECIAL FIBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the same polyester can also be used as the spinning raw material, but different hot water shrinkage must be obtained through different multiples of drafting. Usually, different multiples of drafting are carried out on the drafting equipment using different processes. In this way, the whole spinning process is more complicated, and the use of two kinds of polyester raw materials requires two sets of systems for providing polyester melts in their own spinning positions, which obviously increases the manufacturing cost of the product

Method used

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  • Manufacturing method for irregular-section differential-shrinkage polyester filament yarn
  • Manufacturing method for irregular-section differential-shrinkage polyester filament yarn

Examples

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Effect test

Embodiment 1

[0014] A method for manufacturing polyester filaments with different cross-sections and different shrinkages. A polyester is used as a spinning raw material. The polyester melt is extruded through a screw extruder, and then sent to the spinning assembly 1 for spinning after passing through a metering pump. Obtain the as-spun filament bundle, the structure of described spinning pack 1 is as follows figure 1 As shown, its distributing plate 2 is irregular concavo-convex type, and in described primary silk tow, thin monofilament fineness is at 0.4 dtex, and thick monofilament fineness is at 3dtex, and primary silk tow is through cooling, oiling, After drafting, networking and winding, different cross-section and different shrinkage polyester filament products are obtained. The spinning and winding speed is 4500 m / min. The different shrinkage difference of the obtained different cross-section and different shrinkage polyester filament products exceeds 15%. The difference is 5~6 ti...

Embodiment 2

[0016] A method for manufacturing polyester filaments with different cross-sections and different shrinkages. A polyester is used as a spinning raw material. The polyester melt is extruded through a screw extruder, and then sent to the spinning assembly 1 for spinning after passing through a metering pump. Obtain the as-spun filament bundle, the structure of described spinning pack 1 is as follows figure 1 As shown, its distributing plate 2 is irregular concavo-convex type, and in described spun silk tow, thin monofilament fineness is at 1 dtex, and thick monofilament fineness is at 6 dtex, and spun silk tow is cooled, oiled, After drafting, networking and winding, different cross-section and different shrinkage polyester filament products are obtained. The spinning and winding speed is 5300 m / min. The different shrinkage difference of the obtained different cross-section and different shrinkage polyester filament products exceeds 15%. The difference is 5~6 times.

Embodiment 3

[0018] A method for manufacturing polyester filaments with different cross-sections and different shrinkages. A polyester is used as a spinning raw material. The polyester melt is extruded through a screw extruder, and then sent to the spinning assembly 1 for spinning after passing through a metering pump. Obtain the as-spun filament bundle, the structure of described spinning pack 1 is as follows figure 1 As shown, the distribution plate 2 is an irregular concave-convex shape. Among the primary filament bundles, the fineness of the single filaments is 0.7 dtex, and the fineness of the thick single filaments is 4.5 dtex. The primary filament bundles are cooled and oiled. , drafting, networking and winding to obtain different cross-section and different shrinkage polyester filament products, wherein the spinning and winding speed is 5000 m / min, and the different shrinkage difference of the obtained different cross-section and different shrinkage polyester filament products excee...

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Abstract

The invention relates to a manufacturing method for an irregular-section differential-shrinkage polyester filament yarn; the steps of the manufacturing method are as follows: polyester is used as a spinning raw material, polyester melts are squeezed out and measured and then are sent to a spinning component for spinning so as to obtain spun filament tows, wherein a distributing plate arranged in the spinning component is irregularly concave-convex type; and the spun filament tows are cooled, oiled, drafted, webbed and wound so as to obtain the irregular-section differential-shrinkage polyester filament yarn product, wherein the winding speed of the spinning is 4500 to 5300m / min. The manufacturing method is suitable for manufacturing the irregular-section differential-shrinkage polyester filament yarn, only needs the polyester to be used as the spinning raw material and has simple spinning path.

Description

technical field [0001] The invention relates to a method for manufacturing polyester filaments, in particular to a method for manufacturing polyester filaments with different cross-sections and different shrinkages. Background technique [0002] In the existing manufacturing process of polyester filaments with different cross-sections and different shrinkages, spinneret assemblies with special-shaped spinneret holes are generally used for spinning to achieve the effect of different cross-sections, and polyesters with different intrinsic viscosities are usually used for spinning. In order to achieve the effect of differential shrinkage of raw materials, the same or different drafting ratios can be used in the drafting of the tow, and a larger differential shrinkage difference can be obtained by using different drafting ratios. In addition, the same polyester can also be used as the spinning raw material, but different hot water shrinkage must be obtained through different mul...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01D13/00D01D13/02D01D5/253D01F6/62
Inventor 赵满才宋少丰赵卫星
Owner SUZHOU LONGJIE SPECIAL FIBER
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