Plastic and nonmetallic article shaping or treating: processes – Carbonizing to form article – Agglomeration or accretion
Patent
1989-07-25
1990-12-11
Thurlow, Jeffery
Plastic and nonmetallic article shaping or treating: processes
Carbonizing to form article
Agglomeration or accretion
264512, 264514, 264524, 264567, 264173, 264230, 2642902, B29C 7104
Patent
active
049768980
ABSTRACT:
Method of manufacturing a heat shrinkable biaxially oriented thermoplastic film by extruding a primary tube including very low density polyethylene (VLDPE), heating the primary tube and biaxially stretching the heated primary tube using a double bubble method to form a tube which is heat shrinkable from about 30% to about 50% in at least one of the transverse and machine directions.
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Lustig Stanley
Mack Nancy M.
Schuetz Jeffrey M.
Vicik Stephen J.
LeFever John C.
Thurlow Jeffery
Viskase Corporation
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