Coextrusion apparatus and process
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United States of America Patent
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-
Dec 6, 1988
Grant Date -
N/A
app pub date -
Jun 5, 1987
filing date -
Jun 5, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The present invention provides a novel coextrusion apparatus including, in a preferred embodiment, a die within a feedblock. The apparatus includes edge seam-forming channels, which provide a core layer sandwiched within adjacent layers having integrally seamed edges. Also provided in a unique process for sandwiching a core stream within adjacent layers.
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