Plastic article or earthenware shaping or treating: apparatus – Preform assembly means and means for bonding of plural... – Reshaping means utilizing fluid pressure directly contacting...
Patent
1985-05-01
1986-06-03
Woo, Jay H.
Plastic article or earthenware shaping or treating: apparatus
Preform assembly means and means for bonding of plural...
Reshaping means utilizing fluid pressure directly contacting...
425525, 264524, B28B 2136
Patent
active
045927189
ABSTRACT:
Apparatus for producing a hollow molded synthetic resin article includes a split mold having an inner molding surface with a contour conforming to the configuration of the desired article, a space between the opposing mold members of the split mold for receiving a heated parison of a thermoplastic synthetic resin in the form of a tube or two parallel-laid sheets, vacuum suction holes provided in the molding surface and the parting surfaces of the split mold, means for opening and closing the split mold, means for applying negative pressure to the vacuum suction holes, and means for blowing heated compressed air against the inside surface of that portion of the parison which corresponds to the parting surfaces in the direction facing the parting surfaces. The attachment of the parison to the parting surfaces is thereby facilitated.
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patent: 3548043 (1970-12-01), Held, Jr.
Cabaniss J. E.
Woo Jay H.
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