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Method for producing polytef amosite

A technology of polytetrafluoroethylene and its manufacturing method, which is applied in the field of fiber manufacturing, can solve problems such as difficulty in processing, difficulty in becoming a raw material for a bag filter bag, difficulty in making polytetrafluoroethylene fibers, etc., and achieve a good service life Effect

Active Publication Date: 2007-11-21
SHANGHAI JINYOU FLUORINE MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the difficult processability of PTFE, it seems that it is very difficult to make PTFE fibers, and it is difficult to become a bag material for bag filter

Method used

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  • Method for producing polytef amosite

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Embodiment Construction

[0011] Embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0012] Referring to Fig. 1, the steps of the manufacture method of a kind of polytetrafluoroethylene long fiber of the present invention are as follows:

[0013] 1. Put 100% polytetrafluoroethylene into the screw extruder for extrusion. The working temperature of the screw extruder is 325-420°C and the speed is 3-100r / min;

[0014] 2. After passing through the screw extruder, it enters the calender for calendering. The working temperature of the calender is 10-50°C and the line speed is 0.5-1m / min;

[0015] 3. After entering the stretching machine for stretching, the working temperature of the stretching machine is 10-50°C, and the line speed is 0.3-1.2m / min;

[0016] 4. Then enter the heating and stretching machine for heating and stretching. The working temperature of the heating and stretching machine is 130-190°C and the line speed is 0.4-...

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Abstract

This invention provides one method for producing PTFE long fiber. The raw materials for this invention is 100% PTFE, the use of processing equipment includes spiral extrusion machine, calendar, stretching machine, heating tensile machine, Slitter, twisting machines, extrusion tensile machine, and roll-up. Firstly put the PTPE into spiral extruder and crash, secondly put into heating tensile machine to heat and stretch, do it once more, thirdly cut through slitter, twist into beam by twisting Machine, fourthly roughly stretch by squeeze tensile machine, and then stretch finely by squeeze tensile machine, finally put into heating tensile machine to heat and stretch, roll up by the roll-up machine, after which the production of PTFE long fiber is done. The PTFE long fiber in this invention can produce the monofilament long fiber and multi long fiber which can be used as the fabric filter substrate of bag filter as well as high-intensity industrial sewing thread which longer the durability of the filter bag for Teflon bag.

Description

Technical field: [0001] The invention relates to a method for manufacturing fibers, in particular to a method for manufacturing polytetrafluoroethylene long fibers. Background technique: [0002] The bag filter has been widely used in industry, mainly used for the treatment of flue gas and dust discharged in industrial production or in the surrounding environment, which removes environmental pollution and purifies the air, which plays a positive and effective role. Function, the work of the bag filter mainly depends on the filter bag of the bag filter to filter the flue gas and dust, and the bag material of the bag filter determines the adaptability of the bag of the bag filter to various smoke and dust. performance, and service life, at present, the main raw materials of the bag filter are aramid fiber, polyphenylene sulfide fiber, polyaramid fiber and glass fiber, etc., the characteristics of aramid fiber It has a specific gravity of 1.38g / cm 3 , the limiting oxygen inde...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F6/12D01D5/098
Inventor 黄斌香黄磊苏韵芳徐欧
Owner SHANGHAI JINYOU FLUORINE MATERIALS
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