Harness, Dickey & Pierce, P.L.C.
Seal component manufacturing method and mold
To prevent defective molding, a base member is set between split molds of a metal mold, a molding rubber material is injected into an endless shape cavity defined between the base member and the split mold, an injection amount thereof is made such that the molding rubber material fills the cavity and thereafter flows from an air vent hole open to a confluence position in the cavity into a surplus material reservoir provided downstream but does not fill the surplus material reservoir, pressure drop due to flow resistance is caused to the molding rubber material flowing into the surplus material reservoir, and thereby pressure in the cavity is maintained to be not lower than pressure required to mold a gasket and lower than pressure causing leakage from the cavity.
NOK Corporation
H B B Y H B Y
H01M B29C B29C Y02E H01M B29L Y02P
inventional inventional inventional additional inventional additional additional
Shigeru
Watanabe