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Ultrathin wide teflon turning film and manufacturing technology thereof

A polytetrafluoroethylene, manufacturing process technology, applied in the field of ultra-thin and wide-width polytetrafluoroethylene turning film, processing and manufacturing technology, can solve the problems that cannot meet the requirements of ultra-thin and wide-width polytetrafluoroethylene film, and it is not easy to achieve Curl, even thickness effect

Active Publication Date: 2013-06-12
JIANGSU TAIFULONG TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The manufacture of PTFE film usually has two methods: stretching and turning. The existing PTFE turning film is limited by production equipment and processing technology. The width of the turning film is generally less than 1 meter, and the thickness is usually greater than 0.1 mm. , can not meet those requirements for ultra-thin and wide PTFE film

Method used

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  • Ultrathin wide teflon turning film and manufacturing technology thereof
  • Ultrathin wide teflon turning film and manufacturing technology thereof

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Embodiment Construction

[0023] The manufacturing process of the ultra-thin wide polytetrafluoroethylene turning film comprises the following steps:

[0024] (1) Raw material sieving: the PTFE suspended fine powder raw material is mashed, mixed and stirred by a high-speed mixer, and then sieved by a 60-mesh vibrating sieve to obtain PTFE raw material;

[0025] (2) Blank production: The above-mentioned PTFE spare raw materials are molded into hollow cylindrical blanks, and the demoulded blanks are stored in an environment of 45°C to 55°C for 20 hours to 24 hours to eliminate the roughness of the blanks. Internal stress;

[0026] (3) Sintering: Place the blank obtained in step (2) in a numerically controlled sintering furnace, sinter and cool for 48 to 96 hours according to the set program to obtain a blank;

[0027] (4) Turning or rotary cutting: Put the blank obtained in step (3) into an oven at 100°C to 120°C for preheating, and keep the temperature for 4 hours to 6 hours to make the inner and outer...

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Abstract

The invention relates to an ultrathin wide teflon turning film and a manufacturing technology thereof. The technology comprises the steps of: (1) sieving raw materials, namely, screening Teflon suspension fine powder coarse waste by a 60-mesh vibrating sieve; (2) manufacturing blank, namely, manufacturing a cylindrical blank through a mould pressing manner and removing the inner stress of the blank; (3) sintering; (4) after preheating of the blank, turning the blank by a high-precision numerically-controlled lathe; and (5) rolling. The width of the turning film is 200-2000mm, and the thickness of the turning film is 0.02-0.50mm. According to the technology, the calendering step in the traditional technology is omitted, the technology steps and construction installation equipment are improved, the turning film is doubled in width compared with the traditional products, the film is uniform in thickness, is not easy to curl, has excellent performances such as impact resistance, wear resistance, chemical attack resistance and self-lubrication, can be used for a long time under an environment being +250 DEG C to -180 DEG C, and can basically meet the requirement of the market on the ultrathin wide teflon film.

Description

technical field [0001] The invention relates to a functional plastic film, especially an ultra-thin and wide-width polytetrafluoroethylene turning film and a processing and manufacturing process of the film. Background technique [0002] Polytetrafluoroethylene (PTFE) is commonly known as the "King of Plastics". Among various plastics, PTFE has particularly superior characteristics. For example: its heat resistance, low temperature resistance, chemical resistance, electrical insulation and high frequency characteristics are particularly superior, and it also has unique non-adhesion, sealing, low friction and good aging resistance. Due to these excellent properties, PTFE products are not only used in chemical industry, electrical, electronic industry and mechanical industry, but also widely used in various fields from aviation, aerospace, military industry to medical treatment and household products. [0003] The manufacture of PTFE film usually has two methods: stretching a...

Claims

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Application Information

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IPC IPC(8): B29D7/01
Inventor 赵文杰赵文六侯金国赵晖
Owner JIANGSU TAIFULONG TECH
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