Fine denier high intensity low shrinkage polyester filament yarn processing method

A polyester filament and processing method technology, applied in filament/thread forming, single-component polyester artificial filament, textiles and papermaking, etc., can solve the problems of long drawing process and inconvenient operation, and achieve short process flow , low equipment requirements and significant economic benefits

Active Publication Date: 2007-12-12
SINOPEC YIZHENG CHEM FIBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Chinese patent application 03113412.2 introduces "a preparation method of high-strength and low-stretch polyester filaments for sewing threads", which uses pre-oriented yarns as raw materials, and sequentially undergoes primary drafting, tension heat setting, secondary drafting, and relaxation heat. Shaping, winding and other processes are produced, which effectively solves the defects in the existing technology, but at the same time it also brings other problems: the drafting process is long, the operation is inconvenient, and the existing flat drafting machine needs to be compared. big makeover

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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  • Fine denier high intensity low shrinkage polyester filament yarn processing method
  • Fine denier high intensity low shrinkage polyester filament yarn processing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] The conventional POY polyester pre-oriented yarn obtained by spinning at a spinning speed of 2500-3300m / min, with a specification of 520dt / (48-72)f, and a circular cross-section, is drawn in parallel on the FTF1001 double-heated disc. On the stretching and winding machine, it is processed through the processes of "pre-drawing roller → upper hot plate → lower hot plate → hot plate → cold plate → winding". , the package is well formed, and the physical indicators of the obtained DT wire are shown in Table 2.

Embodiment 2

[0017] The conventional POY polyester pre-oriented yarn obtained by spinning at a spinning speed of 2500-3300m / min, with a specification of 390dt / (36-48)f, and a circular cross-section, is drawn in parallel on the FTF1001 double-heated disc. On the stretching and winding machine, it is processed through the processes of "pre-drawing roller → upper hot plate → lower hot plate → hot plate → cold plate → winding". , the package is well formed, and the physical indicators of the obtained DT wire are shown in Table 2.

Embodiment 3

[0019] The conventional POY polyester pre-oriented yarn obtained by spinning at a spinning speed of 2500-3300m / min, with a specification of 390dt / (36-48)f, and a triangular cross-section, is drawn in parallel with FTF1001 double-heated discs On the winding machine, it is processed through the processes of "pre-drawing roller→upper hot plate→lower hot plate→hot plate→cold plate→winding". The process conditions of the main process are shown in "Process 3" in Table 1. The package is well formed, and the physical indicators of the obtained DT yarn are shown in Table 2.

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Abstract

The invention provides a processing method of fine denier, high-strength and low-shrinkage polyester filament. The method uses the ordinary POY polyester pre-oriented silk as pre-processing raw materials which is obtained in spinning speed of 2500 - 3300m/min and in the condition of need not be increased control-cooling, improves the prior dual-heat-discs horizontal traction machine, adjusts the design of traction technology, processes consecutively through several procedures of first level drafting, one-shot relaxed heat forming and rolling to control the drafting temperature, drafting magnification and shaping relaxation rate accurately, then produces fine denier, high-strength and low-shrinkage polyester filament which denier is 30D-200D. The strength of products can reach 8.0 +- 0.5g / d (7.0 +- 0.4cN/dtex), the broken elongation is 14.0% +- 3.0% and the boiling-water shrinkage ratio is below 2.0%, it meets the requirements of producing high and middle grade polyester filament sewing thread.

Description

technical field [0001] The invention relates to polyester filaments, in particular to fine-denier polyester filaments, in particular to a processing method for fine-denier, high-strength, and low-shrinkage polyester filaments, and belongs to the technical field of synthetic fiber production. Background technique [0002] Polyester filament sewing thread has the characteristics of high strength, good wear resistance, corrosion and mildew resistance, smooth thread feel and no needle stagnation when sewing, and is widely used in bags, shoes, leather products, decorations, sportswear and other items sewing. The preparation of polyester filament sewing thread generally adopts high-strength, low-shrinkage and low-elongation polyester filament, which requires properties such as high strength, low elongation and low heat shrinkage. This kind of high-strength, low-shrinkage and low-elongation polyester filament has a strength of at least 5.8cN / dtex, and a boiling water shrinkage of ...

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 Applications(China)
IPC IPC(8): D01D5/00D01F6/62
Inventor 史利梅李刚邓飞
Owner SINOPEC YIZHENG CHEM FIBER
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