PTFE (Polytetrafluoroethylene) packing

A PTFE, packing technology, used in engine sealing, engine components, household components, etc., can solve problems such as poor sealing, achieve good elasticity, good sealing, and maintain corrosion resistance.

Active Publication Date: 2017-04-26
浙江赛迅环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, its disadvantage is poor sealing

Method used

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Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0023] This specific embodiment is only an explanation of the present invention, not a limitation of the present invention. Any changes made by those skilled in the art after reading the description of the present invention will be subject to the patent law as long as they are within the scope of the claims. Protect.

[0024] PTFE packing, including a packing body braided by polytetrafluoroethylene material, is characterized in that: it also includes a silicone rubber core and an isolation film; the isolation film is wrapped outside the silicon rubber core, and the packing body is wrapped in an isolation The surface layer of the packing is formed outside the film; the packing body is woven by a plurality of braided wires through a packing braiding machine, and the braided wires are formed by winding a strip-shaped polytetrafluoroethylene film along the width direction.

[0025] The preparation process of braided wire is introduced as follows:

[0026] The braided wire is made...

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PUM

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Abstract

The invention relates to a PTFE (Polytetrafluoroethylene) packing. The PTFE packing comprises a packing body, a silicone rubber core and an isolating membrane, wherein the packing body is woven by PTFE materials, the isolating membrane wraps the silicone rubber core, and the packing body wraps the isolating membrane so as to form a surface layer of the packing. According to the PTFE packing, the outer layer of the packing is made of the PTFE materials, the inner core of the packing is made of silicone rubber, and the outer layer is isolated from the inner core by the PTFE membrane, so that the PTFE packing has the advantages of good elasticity, good sealing performance and good corrosion resistant performance.

Description

technical field [0001] The invention relates to a packing, in particular to a polytetrafluoroethylene packing. Background technique [0002] Packing, also called sealing packing, is usually a strip woven from relatively soft threads. Usually the section of the packing is square or circular, and the packing is filled in the sealed cavity to achieve sealing. The sealing packing was originally stuffed with fibers such as cotton and hemp in the leakage channel to prevent liquid leakage, and it was mainly used as a shaft seal for the shaft water lifting machine. Due to the wide range of packing sources, easy processing and low price, reliable sealing and simple operation, it is still used today. [0003] Now, packing is widely used in centrifugal pumps, compressors, vacuum pumps, mixers, etc. At present, the most widely used packing is PTFE packing, which is suitable for various corrosive environments. At the same time, because the PTFE material is very smooth, it will not ca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16J15/16B29D99/00B29K27/18
CPCB29D99/0053B29K2027/18F16J15/16
Inventor 徐淦芳
Owner 浙江赛迅环保科技有限公司
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