Title:
SEALING MEMBER AND METHOD FOR PRODUCING THE SAME
Document Type and Number:
Japanese Patent JP3655199
Kind Code:
B
Abstract:
PROBLEM TO BE SOLVED: To provide a lightened sealing member having good compression set and low-temperature properties.
SOLUTION: This sealing member 1 is equipped with an expanded rubber part 9 formed from a raw material for forming comprising ethylene-propylene- diene terpolymer(EPDM), polypropylene and a foaming agent and vulcanized. The polypropylene preferably comprises in an amount of 10-30 pts.wt. based on 100 pts.wt. of the EPDM. The polypropylene is preferably compounded to the EPDM previously and supplied as a polymer alloy in which the polypropylene is dispersed into the EPDM. The raw material for forming comprises a pyrolytic foaming agent as the foaming agent. The expanded rubber part 9 of the sealing member 1 obtained thereby has high compression set and low-temperature properties, a low specific gravity and a smooth surface texture.
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Inventors:
Fukushima, Yasuhiro
Application Number:
JP2001000022054
Publication Date:
March 11, 2005
Filing Date:
January 30, 2001
Export Citation:
Assignee:
TOKAI KOGYO CO LTD
International Classes:
E04B1/684; B29C47/04; B60J10/08; B60R13/06; C08J9/04; C08L23/16; C09K3/10; E04B1/684; B29C47/04; B60J10/00; B60R13/06; C08J9/00; C08L23/00; C09K3/10; (IPC1-7): B60J10/08; B29C47/04; B60R13/06; C08J9/04