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Method for preparing super-high-density waterproof breathable fiber

An ultra-high-density, air-permeable technology, applied in fiber processing, fiber chemical characteristics, melt spinning, etc., can solve problems such as poor production stability, high number of spinning breaks, and high evenness unevenness, and achieve broken ends Fewer times, good production stability, and low evenness

Inactive Publication Date: 2018-12-07
TONGKUN GRP ZHEJIANG HENGTENG DIFFERENTIATION FIBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a preparation method of ultra-high-density waterproof and air-permeable fibers, which overcomes the many times of spinning breakage and relatively low production stability of ultra-high-density waterproof and air-permeable fibers in the prior art. Poor, high unevenness

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A method for preparing ultra-high-density waterproof and air-permeable fibers, the production process includes the following steps:

[0024] (1) Material selection: Purified terephthalic acid (PTA) and ethylene glycol (EG) are used to obtain a fiber-forming high polymer—polyethylene terephthalate (PET) through esterification and polycondensation Melt, the intrinsic viscosity of the melt is 0.631dl / g, the carboxyl-terminated content is 33mol / t, the diethylene glycol content is less than 0.9%, and the titanium dioxide content is 0.21%;

[0025] (2) Production process flow: The melt of ethylene terephthalate (PET) passes through the melt conveying pipe → booster pump → melt cooler → static mixer → melt distribution valve → spinning box →metering pump→single-plate spinning assembly→spinneret→circular blower cooling→oiling nozzle→passway→first godet→pre-network→second godet→winding forming→POY→automatic doffing, etc. Step, the specification is 138dtex / 144F ultrafine flat fi...

Embodiment 2

[0028] A method for preparing ultra-high-density waterproof and air-permeable fibers, the production process includes the following steps:

[0029] (1) Material selection: Purified terephthalic acid (PTA) and ethylene glycol (EG) are used to obtain a fiber-forming high polymer—polyethylene terephthalate (PET) through esterification and polycondensation Melt, the intrinsic viscosity of the melt is 0.629dl / g, the carboxyl-terminated content is 37mol / t, the diethylene glycol content is 1.160%, and the titanium dioxide content is 0.22%;

[0030](2) Production process flow: The ethylene terephthalate (PET) melt passes through the melt delivery pipe → booster pump → melt cooler → static mixer → melt distribution valve → spinning box →metering pump→single plate spinning assembly→spinneret→circular blower cooling→oiling nozzle→passway→first godet→pre-network→second godet→winding forming→POY→automatic doffing, etc. Step, the specification is 138dtex / 144F ultrafine flat fiber; wherein ...

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Abstract

The invention discloses a method for preparing a super-high-density waterproof breathable fiber. The method is characterized by comprising the steps that a terephthalic acid gylcol ester melt passes through a melt delivery pipe, a booster pump, a melt cooler, a static mixer, a melt distribution value, a spinning manifold, a metering pump, a single plate spinning assembly and a spinneret plate, issubjected to ring blower cooling and oil nozzle oiling, passes through a passage and a first draw-off godet, is pre-interlaced, passes through a second draw-off godet, and is subjected to winding formation, POY and automatic doffing in sequence. The method for preparing the super-high-density waterproof breathable fiber has the advantage of solving the problems in the prior art of more times of spinning end breakage in the production process, poor production stability and higher yarn unevenness.

Description

technical field [0001] The invention relates to a preparation method of an ultra-high-density waterproof and air-permeable fiber, which is mainly applied in the technical field of fiber production technology. Background technique [0002] Due to the small diameter of ultra-high density waterproof and breathable fiber, its bending stiffness is very small, the fiber feels very soft, and the specific surface area of ​​the fiber is large. The fabric has a good feel and a gorgeous appearance. The ultra-high-density fabric made of fine fibers, Although it has a high density, it is light in texture, good in drapability, soft and plump to the touch, and has high water resistance even without coating and waterproof treatment. It is light, easy to fold, and easy to carry. It is a high-value-added spinning raw material. [0003] However, in the current production process of ultra-high-density waterproof and breathable fibers, various problems and difficulties, such as high-end broken e...

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): D01D5/08D01D5/092D01D5/096D01F1/10D01F6/92
CPCD01D5/08D01D5/092D01D5/096D01F1/10D01F6/92
Inventor 张伟龙徐腾超杨飞
Owner TONGKUN GRP ZHEJIANG HENGTENG DIFFERENTIATION FIBER
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