Extrusion die for multilayer foils or plates of thermoplastic synthetic resin
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United States of America Patent
Stats
-
Nov 14, 1989
Grant Date -
N/A
app pub date -
Oct 14, 1988
filing date -
Oct 15, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An extrusion die for the extrusion of a multilayer thermoplastic foil or plate in which a stack of die plates is provided and each plate has an inlet fitting on a respective side of the rectangular outline of the die connected to a respective extruder and a broadening channel opening at an outlet along another edge of the respective plate. The outlets are located on the same side of the stack and open into a common die lip from which the multilayer extrusion emerges at an elongated slit for the broad-mouth die. The broadening channels of the upper and lower plates are sickle shaped and extend inwardly from the respective inlets mirror-symmetrically to receive a median plane along which the inlet of the broadening channel of the central plate is provided.
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