Plastic article or earthenware shaping or treating: apparatus – Means feeding fluent stock from plural sources to common... – Extrusion shaping means
Patent
1985-10-07
1988-03-15
Hoag, Willard E.
Plastic article or earthenware shaping or treating: apparatus
Means feeding fluent stock from plural sources to common...
Extrusion shaping means
425462, B29C 4710, B29C 4714, B29C 4792
Patent
active
047310049
ABSTRACT:
A film of uniform thickness is formed by two or more materials (A, B, etc.) extruded side-by-side with their common edge joined and co-mingled to form a single piece film. The film is preferably formed in a conventional slot die by use of a barrier dividing the entry manifold into two passages so that the materials co-mingle downstream of the barrier at their common edge. In one application, the film can be extruded partially clear and partially opaque to form a bread wrapper.
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Hoag Willard E.
Princeton Packaging, Inc.
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