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Patent Searching and Data


Title:
METHOD FOR PROCESSING POLYTETRAFLUOROETHYLENE TEMPERATURE-RESISTANT GASKET WITH STEEL LINING, AND PRODUCT
Document Type and Number:
WIPO Patent Application WO/2019/109282
Kind Code:
A1
Abstract:
A polytetrafluoroethylene temperature-resistant gasket with a steel lining and a processing method therefor, relating to the technical field of high temperature-resistant gaskets and comprising: obtaining, by means of machining, a polytetrafluoroethylene framework (3) having an I-shaped section; then heating the polytetrafluoroethylene framework (3) to 200-230°C for softening same, mounting an annular steel lining (1) in an annular groove (7), and simultaneously mounting an annular non-asbestos cushion (2) between two side edges of the steel lining (1) and the polytetrafluoroethylene framework (3); and finally, in a hot state, sandwiching two sides of the polytetrafluoroethylene framework (3) between two flat plates, and then after slowly cooling to room temperature, taking out a restored and molded workpiece. When manufacturing the temperature-resistant gasket, the dimensional precision is easy to control; a gap is reserved between the steel lining and the non-asbestos gasket so that better sealing performance is achieved after mounting; the steel lining can be prevented from offset in an injection molding process; moreover, a non-asbestos cushion layer of the temperature-resistant gasket is easy to mount. The device is applicable to sealing the mouth of a ceramic reaction kettle and is durable so that a good and long-term sealing effect is ensured.

Inventors:
XU, Wensheng (41#Xinyangcun of Yangmiao, Hanjiang DistrictYangzhou, Jiangsu 0, 225000, CN)
Application Number:
CN2017/114910
Publication Date:
June 13, 2019
Filing Date:
December 07, 2017
Export Citation:
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Assignee:
XU, Wensheng (41#Xinyangcun of Yangmiao, Hanjiang DistrictYangzhou, Jiangsu 0, 225000, CN)
International Classes:
B23B1/00; F16J15/12
Domestic Patent References:
WO2008010081A22008-01-24
Foreign References:
GB2229047A1990-09-12
CN104923806A2015-09-23
CN201884635U2011-06-29
CN203516720U2014-04-02
CN101144541A2008-03-19
US20060181032A12006-08-17
JPS57192670A1982-11-26
CN102069195A2011-05-25
CN103447833A2013-12-18
Attorney, Agent or Firm:
NANJING SUKE PATENT AGENT CO., LTD. (1-210 of Xinghuo Venture Building, XU Subai20# of Xinghuo Road, Hi-tech Development Zon, Nanjing Jiangsu 8, 210008, CN)
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