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Multilayer cloth and forming method thereof

A cloth and block technology, applied in the field of multi-layer cloth, can solve problems such as the inability to ensure the quality of PTFE film/adhesive/cloth and differences in processing parameters

Inactive Publication Date: 2015-02-11
TAI YUEN TEXTILE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this way, even if the same PTFE membrane and glue are used, it may not be possible to ensure that the PTFE membrane / glue / cloth formed by each process has a consistent quality due to differences in processing parameters

Method used

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  • Multilayer cloth and forming method thereof
  • Multilayer cloth and forming method thereof
  • Multilayer cloth and forming method thereof

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Embodiment Construction

[0013] Such as figure 1 As shown, in one embodiment of the present invention, PTFE (polytetrafluoroethylene) powder, ethylene monomer, kerosene, and Ziegler-Natta catalyst are mixed to form a viscous mixture, and then the mixture is pressed into a film 10 through three rollers. In one embodiment of the present invention, the main catalyst of Ziegler-Natta catalyst is TiCl 4 , the secondary catalyst is triethylaluminum.

[0014] Then as figure 2 As shown, the upper surface of the film 10 is heated, so that the residual kerosene in the film 10 moves toward the upper surface of the film 10, and the ethylene monomer moves toward the upper surface of the film. During the heating process, the ethylene monomer mixed in the PTFE powder will undergo in-situ polymerization reaction under the action of Ziegler-Natta catalyst to form chain-like polyethylene 11 in the film-like PTFE13. Since the kerosene drives the ethylene monomer to move toward the upper surface of the film, the end ...

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PUM

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Abstract

The invention provides a multilayer cloth comprising a breathable waterproof film and a cloth unit, the breathable waterproof film comprises filmy polytetrafluoroethylene and a plurality of catenulate polyethylene units, main chains of the catenulate polyethylene units are inserted into the filmy polytetrafluoroethylene , and tail ends of the catenulate polyethylene units are exposed out of the surfaces of the filmy polytetrafluoroethylene and are not gathered to be in bulk, and the cloth unit and the breathable waterproof film are bonded through the tail ends of the catenulate polyethylene units. The polyethylene units and the PTFE (polytetrafluoroethylene) in the breathable waterproof film can coexist for a long time.

Description

technical field [0001] This invention relates to multilayer fabrics containing breathable and waterproof films, and more particularly to methods of forming them. Background technique [0002] Polytetrafluoroethylene (PTFE) is a synthetic polymer material in which fluorine replaces all hydrogen atoms in polyethylene (PE). This material is resistant to acids, alkalis, and various organic solvents, and is almost insoluble in all solvents. At the same time, PTFE has the characteristics of high temperature resistance, its friction coefficient is extremely low, so it can be used for lubrication, and it is also an ideal coating for non-stick pans and the inner layer of water pipes. In cloth applications, PTFE is waterproof and breathable. Generally speaking, if the PTFE film is to be attached to the fabric, it is usually necessary to adhere the PTFE film and the fabric by means of dispensing or surface glue. If the dispensing density is too low, it is easy for the PTFE film to f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B37/04B32B27/12B32B27/30B32B7/10
CPCB32B7/10B32B27/12B32B27/30B32B27/32B32B37/04B32B37/10B32B2307/724B32B2307/73
Inventor 应丞武吴昌任
Owner TAI YUEN TEXTILE