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Patent Searching and Data


Title:
MOLDING TOOL AND MOLDING METHOD FOR RUBBER PRODUCT
Document Type and Number:
Japanese Patent JPH1190960
Kind Code:
A
Abstract:

To provide a molding tool and a molding method for a rubber product for improving the release properties of the rubber product manufactured by molding from the molding tool and also improve the flash removing workability and the manufacturing quality of the rubber product.

A molding tool 1 for molding a product section by a method of injecting a flowing rubber-like elastic material into a cavity CV is provided with a top force 3 having the cavity CV, a gate section 5 and a spool section 6 disposed in said order starting from a parting line PL in the mold opening direction, and an umbrella-shaped valve V1 (a product section) and a spool section 6 combined integrally are retained on the top force 3 at the time of mold opening, the umbrella-shaped valve V1 is released from a bottom force 4.


Inventors:
NAKAMURA FUJIO
Application Number:
JP27331497A
Publication Date:
April 06, 1999
Filing Date:
September 22, 1997
Export Citation:
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Assignee:
NOK CORP
International Classes:
B29C33/44; B29C45/02; B29C45/26; B29K21/00; (IPC1-7): B29C45/26; B29C33/44
Attorney, Agent or Firm:
Kazunobu Sera (2 outside)