The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 11, 2001
Filed:
Jan. 05, 1998
Nobukazu Takano, Yokohama, JP;
Shingo Kato, Tokyo, JP;
Hiroshi Takada, Yokohama, JP;
Shingo Iizumi, Yokohama, JP;
Masanao Ieyoshi, Yokohama, JP;
Bridgestone Corporation, Tokyo, JP;
Abstract
A processes for adhering a vulcanized rubber to a vulcanized rubber or an unvulcanized rubber. Adhesion of vulcanized rubbers to each other is conducted by using at least one of the vulcanized rubbers before vulcanization thereof according to steps of: (1) laminating a sheet material which can easily be peeled from a surface of a rubber after vulcanization to a rough surface of the rubber before vulcanization, (2) vulcanizing a resultant laminate, (3) removing the sheet material from the vulcanized laminate immediately before adhesion of the vulcanized rubber in the laminate to another vulcanized rubber, and (4) adhering the vulcanized rubbers to each other according to a method of adhesion. The adhering of the vulcanized rubbers to each other is also conducted by using a rubber composition for adhesion inserted between the vulcanized rubbers without procedures using the sheet material. An unvulcanized rubber is used in place of another vulcanized rubber in the process for adhering a vulcanized rubber and an unvulcanized rubber to each other. A rubber composition for adhesion which contains sulfur in an amount greater than that of the vulcanized rubber may be used in the method of adhesion. Various types of rubber products, such as a large size rubber weir, a steep slope conveyor belt, a rubber gasket used for a joint portion of immersed elements for an immersed tunnel, and a retreaded tire, can be produced by using the processes for adhering.