Plastic article or earthenware shaping or treating: apparatus – With means applying coating material to work or work contact... – Immersion type
Patent
1990-07-13
1991-09-24
Chiesa, Richard L.
Plastic article or earthenware shaping or treating: apparatus
With means applying coating material to work or work contact...
Immersion type
118260, 118423, 264134, 264523, 425102, 425522, B29C 4942
Patent
active
050510800
ABSTRACT:
An apparatus for enhancing the uniformity of wall thickness of an article having a high aspect ratio horizontal cross section and produced from a parison in a blow molding process is disclosed. A barrier layer is applied to a selected area of the outer surface of each parison prior to its introduction into the blow molding apparatus, the barrier layer being effective to prevent premature freezing of the blown parison upon contact with a wall of the blow molding apparatus. The barrier layer application apparatus includes a generally contoured pad coupled to a supply of the barrier material, the pad being situated to contact a selected portion of each parison prior to its introduction into the blow molding apparatus.
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Hill Gary
Schoch Walter K.
Warkentien Michael
Chiesa Richard L.
Sewell Plastics Inc.
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