Molding method and molding apparatus of mold product having thin film at inner surface

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United States of America Patent

PATENT NO 7833454
APP PUB NO 20090194905A1
SERIAL NO

12415133

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Abstract

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A molding method involves a first and a second sliding die, a first and a second fixed die, and a sliding film forming chamber. The first, the second sliding dies are moved in directions reverse to each other to take a primary molding position, a film forming position and a secondary molding position. The sliding film forming chamber includes a first, a second masking plate and are arranged to be remote from the first, the second fixed dies. Further, the sliding film forming chamber is slid in an up and down direction. The first, the second sliding dies are respectively formed with recess portions and cores, the first, the second fixed dies are respectively formed with cores and recess portions.

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Patent Owner(s)

Patent OwnerAddress
THE JAPAN STEEL WORKS LTD11 1 OSAKI 1 CHOME SHINAGAWA KU TOKYO 141-0032

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Nishida, Shoso Hiroshima, JP 37 118

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