CONDUCTIVE ROLL AND ITS PRODUCTION - Tokai Rubber Industry Co., Ltd.

Title:

CONDUCTIVE ROLL AND ITS PRODUCTION

Document Type and Number:

Japanese Patent JP3575054

Kind Code:

B2

Abstract:

PURPOSE: To provide a conductive roll which has a high stable quality and performance, can be made to have a low hardness advantagenously without compounding a softening agent and can be improved in absorption characteristics to vibration are effectively and also provide its production method.
CONSTITUTION: First, a laminated body comprising an inner layer to form a conductive rubber foamed layer 14 and an outer layer to form a non-foaming semiconductive rubber layer 16 are formed, and a conductive shaft 12 is inserted into the hole of the laminated body. Then, the laminated body is subjected to vulcanization and foaming at one time in a cylindrical die so that a conductive rubber foamed layer 14 and a non-foaming semiconductive rubber layer 16 are formed into one body on the conductive shaft. Or, a laminated body before vulcanization and foaming having a three-layer structure is formed. The three-layer structure consists of an inner layer to form a semiconductive rubber foamed layer, intermediate layer to form a non- foaming conductive rubber layer 16, and outer layer to form a non-foaming semiconductive rubber layer 16. By using this laminated body and a conductive shaft 12, the same procedure as above-described is carried out to form a one body of the laminated structure on the conductive shaft.

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Inventors:

Takashi Yamamoto
Keita Shiraki
Saburo Hayashi

Application Number:

JP8469294A

Publication Date:

October 06, 2004

Filing Date:

April 22, 1994

Export Citation:

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Assignee:

Tokai Rubber Industry Co., Ltd.

International Classes:

B29C44/04; B29C44/24; B29C70/72; B29C70/88; B29D99/00; F16C13/00; G03G15/02; G03G15/08; B29K21/00; B29K105/04; (IPC1-7): G03G15/02; B29D31/00; F16C13/00; G03G15/08

Domestic Patent References:

JP3223878A
JP6019277A
JP64066674A
JP64066676A

Attorney, Agent or Firm:

Michio Nakajima
Kobe Norikazu
Haruyuki Ikeda

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