Preparation method of low damping internal circular blow multipore spinning fiber

A low-damping, ring-blown technology, applied in the field of polyester production technology, can solve the problems of high investment cost, short service life, complicated production process of blowing head, etc., and achieve low one-time investment, low production equipment requirements, and simple maintenance process costs low effect

Active Publication Date: 2008-04-09
上海太平洋二纺机化纤成套设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The blower head is complicated in manufacturing process, and the polymer foam material is a "disposable" imported material with short service life (10-20 days), high investment cost (equivalent to 10 times of the technology of the present invention), and cleaning time Cleaning agent and water are required

Method used

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  • Preparation method of low damping internal circular blow multipore spinning fiber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] In the process of preparing 1.33dtex (spinneret holes: 3780) fibers with intrinsic viscosity of 0.63-0.65 polyester melt as raw material, in addition to other steps in the prior art, the cooling air main air duct of the inner ring blowing process Wind pressure ≤ 2500pa.s, the blower head is wire mesh plus porous metal rectifier, the blowing wind speed is 1~2m / s, the inlet pressure of the blower head rectifier is 1500pa.s, the rectification pressure drop is 1200pa.s, and the wind pressure of the hair dryer is 200~ 300pa.s. The performance of the obtained product is good, and the physical indexes of the obtained silk are shown in Table 1.

Embodiment 2

[0020] In the process of preparing 1.56dtex (spinneret holes: 3780) fibers using polyester melt with an intrinsic viscosity of 0.63-0.65 as raw material, in addition to other steps in the prior art, the cooling air main air duct of the inner ring blowing process Wind pressure ≤ 2500pa.s, the blower head is wire mesh plus porous metal rectifier, the blowing wind speed is 1~2m / s, the inlet pressure of the blower head rectifier is 1600pa.s, the rectification pressure drop is 1200pa.s, and the wind pressure of the hair dryer is 200~ 300pa.s. The performance of the obtained product is good, and the physical indexes of the obtained silk are shown in Table 1.

Embodiment 3

[0022] In the process of preparing 1.56dtex (spinneret holes: 4250) fibers with intrinsic viscosity of 0.63-0.65 polyester melt as raw material, in addition to adopting other steps in the prior art, the cooling air main air duct of the inner ring blowing process Wind pressure ≤ 2500pa.s, the hair dryer is made of wire mesh and porous metal rectifier, the wind speed is 1~2m / s, the inlet pressure of the hair dryer rectifier is 1600pa.s, the rectification pressure drop is 1200pa.s, and the wind pressure of the hair dryer is 300~ 350pa.s. The performance of the obtained product is good, and the physical indexes of the obtained silk are shown in Table 1. Table 1 The comparison of the performance index of the polyester staple fiber pre-spinning precursor made by the present invention and the prior art *

[0023] sample

Linear density

dtex

uneven linear density

rate cv%

Breaking strength

Cn.dtex

Breaking strength

cv%

elonga...

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Abstract

The present invention belongs to production process of polyester fibre, in particular, it relates to a preparation method of low-damping inner rice blown porous polyester short fibre. In addition to other steps of existent technique the inner race blowing process has the characteristics of that the air-pressure damping of main air-duct of cooling air passed through air-blowing head flow-spreading cylinder is low. It can reduce equipment cost of air-conditioning system, reduce, installed capacity of air conditioner unit and reduce the energy consumption of cold energy of air-conditioning system self-body.

Description

technical field [0001] The invention belongs to polyester production technology, in particular to a method for preparing low damping inner ring blown porous spinning fiber. Background technique [0002] Polyester fiber has good wearing performance and a wide range of applications, and its output and growth rate are much higher than other chemical fiber varieties. Reducing energy consumption is one of the ways to improve product competitiveness. In the production of polyester staple fiber, the energy consumption of the air conditioning system accounts for more than one-third of the fiber manufacturing cost. For the tow cooling process in the spinning process, it is required to have the characteristics of low investment, small installation capacity of the air conditioning unit, and low cooling energy consumption of the air conditioning system itself. [0003] In the current polyester staple fiber tow cooling process at home and abroad, the inner ring blowing process (using a ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01D5/00D01F6/62
Inventor 来可华杨洪平
Owner 上海太平洋二纺机化纤成套设备有限公司
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