Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for reducing fiber hairiness of polytetrafluoroethylene membrane cracks

A technology of polytetrafluoroethylene film and fiber, which is applied in the direction of suction liquid/gas/vapour removal, textile and papermaking, fabric surface trimming, etc. Problems such as large pores

Active Publication Date: 2017-09-15
灵氟隆新材料科技江苏有限公司 +1
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method for effectively reducing the fiber hairiness of polytetrafluoroethylene film cracks, so as to overcome the poor uniformity of carding caused by the large number of hairiness of the polytetrafluoroethylene film crack fibers made by the prior art , slow carding speed and other processing technology defects, and the product performance defects of the made filter material have large average pores, low pore uniformity, and poor dust removal efficiency

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
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for reducing fiber hairiness of polytetrafluoroethylene membrane cracks
  • Method for reducing fiber hairiness of polytetrafluoroethylene membrane cracks
  • Method for reducing fiber hairiness of polytetrafluoroethylene membrane cracks

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0071] The polytetrafluoroethylene film-split fiber tow with a linear density of 2000 denier and a number of hairiness per unit length of 48 produced by the conventional film-split method is used as the primary tow, and then 50 of them are flattened into a layer with a width of 250 mm. 1. The tow layer with a thickness of 1.5 mm is regularly arranged after being combed by the comb needles 1002 of the first comb part 1, and fed into the first horizontal layer with three spunlace head parts through the first pair of rubber feeding roller parts. Type spunlace unit performs the first horizontal spunlace impact dehairing, and its process parameters are: the surface linear speed of the first upper rubber feed roller and the first lower rubber feed roller are both 10 m / min, and the spunlace head The distance between the parts and the top of the dehydration box is 30 mm, the water pressure of the water thorn head parts is 20 MPa, the diameter of the water jets injected from top to bott...

Embodiment 2

[0073] The polytetrafluoroethylene membrane split fiber tow that is 2200 and the number of hairs per unit length is 46 as the primary tow is the linear density obtained by the conventional membrane split method, and then its 40 bundles are tiled into a layer with a width of 200 mm. The tow layer with a thickness of 1.5 mm is regularly arranged after being combed by the comb needles 1002 of the first comb part 1, and then fed into the first horizontal type with three hydroentanglement head parts through the first pair of rubber feeding roller parts. The spunlace unit performs the first horizontal spunlace impact dehairing, and its process parameters are: the surface linear speed of the first upper rubber feed roller and the first lower rubber feed roller are both 6.5 m / min, the spunlace head The distance between the parts and the top of the dehydration box is 20 mm, the water pressure of the water thorn head part is 17 MPa, the diameter of the water jets injected from top to bot...

Embodiment 3

[0075]The polytetrafluoroethylene film-split fiber tow with a linear density of 2400 denier and a number of hairiness per unit length of 45 produced by the conventional film-split method is used as the primary tow, and then 30 bundles are flattened into a layer with a width of 150 mm. 1. The tow layer with a thickness of 1.5 mm is regularly arranged after being combed by the comb needles 1002 of the first comb part 1, and fed into the first horizontal layer with three spunlace head parts through the first pair of rubber feeding roller parts. Type spunlace unit performs the first horizontal spunlace impact dehairing, and its process parameters are: the surface linear speed of the first upper rubber feed roller and the first lower rubber feed roller are both 3 m / min, the spunlace head The distance between the part and the top of the dehydration box is 10 mm, the water pressure of the water thorn head part is 15 MPa, the diameter of the water jet injected from top to bottom is 0.1...

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
Login to View More

PUM

PropertyMeasurementUnit
widthaaaaaaaaaa
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention relates to a method for reducing the hairiness of PTFE (Polytetrafluoroethylene) film-broken fiber. The method comprises the following steps: paving 30 to 50 bundles of conventional PTFE film-broken fiber bundles into a tiled bundle layer; then continuously carried out three times of processing steps of combing and tidy arrangement of a guide bar, feeding of a feeding roller and jet impact cutting and hairiness removing of vertical water sprayed by a horizontal type spunlacing unit which is provided with three spunlacing head components, thus realizing nine times of spunlaced hairiness removing on the tiled bundle layer, and preparing the PTFE film-broken fiber of which the hairiness quantity in unit length is reduced by 55.5 to 68.7 percent than that of the prior art. According to the method for reducing the hairiness of the PTFE film-broken fiber, disclosed by the invention, a flexible spunlacing technology is adopted, and high-speed and sustainable hairiness removing can be carried out; after the prepared PTFE film-broken fiber is cut off, the combining speed is high, the wet formation is uniform, and a prepared filter material is small in pores and high in pore uniformity degree, and the prepared PTFE film-broken fiber can be widely applied to high temperature-resisting filter material with high dedusting efficiency.

Description

technical field [0001] The invention relates to a method for manufacturing polytetrafluoroethylene split fibers, in particular to a method for reducing hairiness of polytetrafluoroethylene split fibers. The polytetrafluoroethylene membrane crack fiber prepared by this method has less hairiness, and when used to prepare filter material, its carding speed is high, and the net is uniform, and the pore of the prepared filter material is small, and the pore uniformity is high, so it can be widely used. High temperature resistant filter material for high dust removal efficiency. Background technique [0002] PTFE has excellent physical and chemical properties, outstanding high and low temperature resistance, excellent chemical corrosion resistance, insoluble in any other chemical solvents except for its own fluoride and molten alkali metal; oxidation resistance it is good. In addition, PTFE has outstanding surface non-stick properties, especially when it is used as a high-temper...

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
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): D04H3/007D06C13/00D06B1/02D06B15/04
CPCD04H3/007D06B1/02D06B15/04D06C13/00
Inventor 薛士临徐玉康陈银青靳向煜陈迎妹朱尚杜婷婷贾亚楠
Owner 灵氟隆新材料科技江苏有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com