Bridgestone Corporation

Shin-etsu Chemical Co., Ltd.

Yoshio Nohara

Masato Yoshikawa

Kazuo Naito

Yukihiro Kusano

Minoru Igarashi

Yoshiaki Hirata

Setsuo Akiyama

Shigeru Kaneko

Masashi Yano

Masayuki Yoshida

Fumihiro Matsuyama

Mahito Fuji

Eiichi Nagafuchi

Masahiro Manabe

Only an outer surface of an unvulcanized rubber sheet is preliminarily crosslinked by irradiating an infrared ray or a far infrared ray to the unvulcanized rubber sheet prior to subsequent final vulcanization, whereby the occurrence of rubber spew and rubber flash is considerably suppressed at the vulcanization step.

Process and apparatus for surface treatment of unvulcanized rubber sheet

A method for cleaning a curing mold to be used for manufacturing elastomer articles, and in particular a cleaning method by removing curing residual of elastomer stuck to the mold without damaging the mold. The method for cleaning the curing mold includes a process of eliminating curing residual of elastomer stuck to the mold in a treatment vessel under plasma conditions.

Method of cleaning a curing mold by oxidation reaction under plasma

An apparatus for carrying unvulcanized pneumatic tires in a tire vulcanizer, comprising: a plurality of upper arcuate segments disposed substantially within a cylindrical surface, each of the upper arcuate segment having at its lower end an upper bead support end for supporting an upper bead portion of the unvulcanized pneumatic tire and a plurality of lower arcuate segments disposed within the upper arcuate segments, each lower arcuate segment having rotatably mounted at its lower end a lower bead support member for supporting a lower bead portion of the unvulcanized pneumatic tire and being movably supported by the corresponding upper arcuate segment. The upper arcuate segments are expandable and contractable radially inward and outward together with the lower arcuate segments. Each of the upper and lower arcuate segments are movable toward and away from with each other and overlapped with each other when moved toward each other.

Apparatus for carrying unvulcanized pneumatic tires in tire vulcanizer

In a heating device for use in a vulcanizing apparatus in which a green tire is vulcanized by using a metal mold, three magnetic cores around each of which an electromagnetic coil is wound are arranged equidistantly on at least one surface of the metal mold, and a magnetic yoke is arranged on these magnetic cores. Then, three phase alternating currents are respectively supplied to the electromagnetic coils to generate uniform magnetic fluxes passing through portions of the metal mold between adjacent magnetic cores. Therefore, it is possible to obtain the heating device for use in the vulcanizing apparatus which can realize the uniform eddy current distribution i.e. the uniform temperature distribution in the metal mold by a simple construction.

Heating device for use in vulcanizing apparatus

Growing community of inventors

Tokyo, Japan

Yoshio Nohara