Title:
EXTRUSION DIE AND METHOD OF EXTRUDING THERMOPLASTIC POLYMER USING SAID DIE
Document Type and Number:
Japanese Patent JPS60210421
Kind Code:
A
Abstract:
This invention relates to an apparatus and a method for extruding polymer melts, especially to produce blown films of reduced surface damage caused by melt-fracture. The apparatus is an extrusion die which has a means for heating the die lips provided on or embedded into the face thereof. The extrusion die of this invention may be used for extrusion of melts of polyolefins, polyesters, polystyrene, polyamides, polyvinyl chloride and polyvinylidene chloride.
Inventors:
JIYON AREKUSANDAA TOOKINTON
Application Number:
JP28207184A
Publication Date:
October 22, 1985
Filing Date:
December 28, 1984
Export Citation:
Assignee:
BP CHEM INT LTD
International Classes:
B29C48/09; B29C48/10; B29C48/32; B29C48/06; B29C48/08; (IPC1-7): B29C47/86
Attorney, Agent or Firm:
Hideto Asamura