BELT VULCANIZING DEVICE AND UNVULCANIZED BELT MOLDED PRODUCT

Japanese Patent JP3550121

B2

PROBLEM TO BE SOLVED: To avoid the generation of a defective product due to porosity caused by insufficient deaeration from an unvulcanized belt molded product during a vulcanizing process and an adhesion failure between a core and a rubber.
SOLUTION: This unvulcanized belt molded product 5 of a double ribbed type has a core material 5b sandwiched between an inside rubber 5a and an outside rubber 5c. In addition, this molded product is used for a vulcanizing device K of such a structure that a heating steam and a pressurizing steam are freely supplied to the inside of a mold 2 to be internally fitted to the molded product and to the outer peripheral side of a jacket 6 to be externally fitted to the molded product respectively. Further, a nonwoven fabric 20 which is of such a length that it is vertically short and wound around an upper and a lower end part between the core material 5b and the outside rubber 5c and makes a single wrapping round around the unvulcanized belt molded product 5, is interposed in a ring-like form in such a state that the nonwoven fabric 20 slightly protrudes in the axial direction ahead of the unvulcanized belt molded product 5.

Takashi Hamada
Kaoru Doi

JP2001346635A

August 04, 2004

November 12, 2001

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Mitsuboshi Belting Co., Ltd.

F16G1/08; B29C33/04; B29C35/04; B29D29/10; F16G5/20; B29K21/00; B29K105/08; B29K105/24; B29L29/00; (IPC1-7): B29C35/04; B29C33/04

JP2060716A
JP10156962A
JP5169452A
JP6039944A
JP8048410A
JP1275128A
JP2000085030A
JP2000355054A

Yoshiyuki Kaji
Makoto Suhara

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