Stock material or miscellaneous articles – Hollow or container type article – Cellular material derived from plant or animal source
Patent
1986-11-12
1988-04-05
Epstein, Henry F.
Stock material or miscellaneous articles
Hollow or container type article
Cellular material derived from plant or animal source
215 1K, 4285428, B65D 2300
Patent
active
047358343
ABSTRACT:
A die ring for use in a blow molding apparatus is provided with depressions at the downstream end of the land to provide the parison with a longitudinally thickened rib and depressions at the upstream end of the land to counteract parison deformation caused by the downstream depressions.
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Morgan Bill T.
Mozer Larry P.
Epstein Henry F.
Phillips Petroleum Company
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