초록 ▼

A method of manufacturing a sealing apparatus. A rubber-like elastic material for forming a rubber-like elastic material sealing lip and a resin material for forming a resin sealing lip are placed within a mold for manufacturing a sealing apparatus by effecting vulcanization forming. The mold is cla

A method of manufacturing a sealing apparatus. A rubber-like elastic material for forming a rubber-like elastic material sealing lip and a resin material for forming a resin sealing lip are placed within a mold for manufacturing a sealing apparatus by effecting vulcanization forming. The mold is clamped with contents placed therein, and the contents are pressurized and heated. During this process, a surface of the resin material is pressed by the forming pressure of the fluidized rubber-like elastic material against a thread formed on an inner wall surface the mold, thereby forming a thread groove on that surface of the resin material pressed against the thread.

대표청구항 ▼

A method of manufacturing a sealing apparatus comprising the steps of: preparing a mold for manufacturing the sealing apparatus by effecting vulcanization forming, said mold having threads formed on an inner wall surface thereof; placing within said mold a rubber-like elastic material and a resin ma

A method of manufacturing a sealing apparatus comprising the steps of: preparing a mold for manufacturing the sealing apparatus by effecting vulcanization forming, said mold having threads formed on an inner wall surface thereof; placing within said mold a rubber-like elastic material and a resin material for providing sealing lips of the sealing apparatus; and clamping said mold in such a manner that said rubber-like material is pressurized and vulcanization formed thereby forming a portion of said rubber-like elastic material as a radially-inner sealing lip, so that the radially-inner sealing lip of the rubber-like elastic material overlaps and extends beyond the sealing lip of the resin material while a radially-inner surface of said resin material which is to serve as a surface of the sealing lip is pressed against said threads by forming pressure generated by fluidized rubber-like elastic material during the vulcanization forming, thereby forming a thread groove on that surface of said resin material; and cutting off a superfluous portion of molded rubber-like elastic material which extends from the radially-inner sealing lip formed of said rubber-like elastic material.