Internal deckle system
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United States of America Patent
Stats
-
Oct 21, 1997
Grant Date -
N/A
app pub date -
Jun 5, 1995
filing date -
Jul 17, 1992
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An extrusion apparatus having an internal deckle system, includes a deckle blade that extends through an end of the apparatus into a flow passageway. The apparatus may beneficially include a cold-formable, sealing member for preventing leakage through the apparatus end. In a variation, the apparatus may include an upstream deckle plug that includes a sealing member formable under heat and compression to prevent leakage transversely past the upper deckle plug. In a further variation, a full width, upper deckle plug may extend through an end of the main body into the manifold. A wavy or scalloped edge may be avoided by an extended portion that extends downwardly and terminates at or near the exit orifice.
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Cited Art Landscape
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