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Manufacturing method for filament non-woven fabric

A filament non-woven fabric and a manufacturing method technology, applied in textiles, papermaking, non-woven fabrics and other directions, can solve the problems of limited application range and production speed, poor dimensional stability, low production speed, etc., to achieve convenient reinforcement process, uniformity The effect of good performance and fast network speed

Active Publication Date: 2013-09-25
TIANJIN POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] High temperature resistant organic filament fibers such as polyphenylene sulfide fiber, aramid fiber, polytetrafluoroethylene fiber and polyimide fiber have a wide range of uses in the field of high temperature filter felts, but these filament fibers are not suitable for High speed melt spunbond production
At present, the high-performance non-woven high-temperature filter mat is prepared by cutting the filament fibers into short fibers, carding them into a web, and then performing acupuncture or hydroentanglement reinforcement molding. The products prepared by this method have relatively low strength and high dimensional stability. Poor, the product has a lot of fluff on the surface, needs singeing treatment, and consumes a lot of energy; while the woven filter cloth produced by traditional textile methods using filament fibers has a low production speed
[0004] Filament fibers prepared by traditional solution spinning such as polyacrylonitrile fibers and viscose fibers cannot be applied to the non-woven production of melt spunbond method. manufacturing method, which greatly limits the scope of application and production speed of the product

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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  • Manufacturing method for filament non-woven fabric
  • Manufacturing method for filament non-woven fabric
  • Manufacturing method for filament non-woven fabric

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Manufacture of glass filament fiber spunlace felt for high temperature filtration, weight 700g / m 2 .

[0031] The process flow of the glass filament fiber spunlace felt for high temperature filtration of the present embodiment (see figure 2 ), and its specific implementation steps:

[0032] Unwinding: Place the yarn bobbin 1 wound with untwisted glass filament fiber 7 on the creel 6, after which the glass filament fiber passes through the tensioner 2 and the infrared short-line self-stop device 3, and the spinning speed of the bobbin is set at 12000r / min.

[0033] Cleaning: the glass filament fiber 7 after unwinding passes through the ultrasonic cleaning pool 4, the power of the ultrasonic cleaning machine is 3000W, the working frequency is 40KHZ, the washing temperature is 60°C, and the water-soluble ultrasonic cleaning agent is selected.

[0034] Drying: the glass filament fiber 7 passes through the single fiber drying device 5, and the hot air temperature is set a...

Embodiment 2

[0038]Manufacture of PTFE filament needle felt for high temperature filtration, weight 500g / m 2

[0039] The process flow of the long needle-punched PTFE felt used for high-temperature filtration of this embodiment can be found in image 3 , and its specific implementation steps are as follows:

[0040] The PTFE fiber web forming steps (comprising unwinding, cleaning, drying and filament forming) are the same as in Example 1. The process conditions are specifically set as follows: the drafting air pressure is 0.45Mpa, the speed of the supporting net curtain 7 is 15m / min, and the step of fixing the net is that the supporting net curtain 12 sends the uniformly dispersed PTFE filament fiber web into the pre-acupuncture machine through The pre-acupuncture head 17 is pre-acupunctured, and then consolidated into a PTFE filament needle-punched felt after passing through three main acupuncture heads 18 for main acupuncture. The pre-acupuncture frequency was set to 600r / min, and the...

Embodiment 3

[0042] Manufacture viscose filament spunlace cloth, weight 100g / m 2 .

[0043] This embodiment manufactures the technological process of viscose filament spunlaced cloth (see figure 2 ) The specific implementation steps are the same as in Example 1. The process conditions are specifically set as follows: drying temperature 100°C, drafting airflow pressure 0.45Mpa, support screen curtain 7 speed 20m / min; water thorn head pressure set to 40bar, 60bar, 80bar, 80bar, 110bar in sequence from front to back , 110bar, 160bar, 160bar, 80bar, 80bar. The rest are the same as embodiment 1.

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Abstract

The invention discloses a manufacturing method for filament non-woven fabric. The manufacturing method for the filament non-woven fabric comprises the following technological steps that (1) a creel is used for unwinding filament fibers, wherein the filament fibers comprise polyphenylene sulfide fibers, aramid fibers, Teflon fibers, viscose fibers, polyimide fibers or polyacrylonitrile fibers, carbon fibers, and glass fibers or basalt fibers, and the filament fibers are zero-twist continuous filaments, and the fineness of the filament fibers is 1micron to 200 microns; (2) ultrasonic waves are used for washing the filament fibers; (3) sigle-fiber drying devices are used for drying the filament fibers; (4) the filament fibers are fed into a tubular drafting device to carry out drafting acceleration through speed adjusting rollers and tensioners, and the filament fibers are evenly dispersed through silk placement devices, and are laid on a net forming curtain to form a filament fiber net; (5) the filament fiber net is manufactured into the filament non-woven fabric through a needled processing method of the non-woven fabric or a spunlace processing method of the non-woven fabric or a hot-rolling processing method of the non-woven fabric.

Description

technical field [0001] The invention relates to a method for manufacturing non-woven fabrics, which is particularly suitable for the direct manufacture of organic filament fibers such as aramid fibers and inorganic filament fibers such as glass fibers and carbon fibers that cannot be directly or difficultly produced by melt spunbonding Filament non-woven fabric. Background technique [0002] Inorganic filament fibers such as carbon fiber, glass fiber and basalt fiber have the advantages of high tensile strength, high temperature resistance and stable chemical properties. They are widely used in aviation, aerospace, defense industry, high temperature filtration, automobile manufacturing, civil engineering and other industries. It has wide application and good application prospect. However, inorganic filament fibers such as carbon fiber, glass fiber, and basalt have poor web-forming performance and are not easy to reinforce due to their high rigidity, fragility, smooth surfac...

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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IPC IPC(8): D04H3/00D04H3/02
Inventor 钱晓明张恒邓辉
Owner TIANJIN POLYTECHNIC UNIV
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