Process for extruding polyethylene
a process is provided wherein polyethylene is melt-extruded in tubular form while simultaneously maintaining an environment of an inert gas such as nitrogen internally of the tubular form of polyethylene to preclude formation of a layer of large spherulites.
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Description
Patent History
Patent number: T978005
Type: Grant
Filed: Mar 28, 1978
Date of Patent: Jan 2, 1979
Assignee: Alcan Aluminum Corporation (Cleveland, OH)
Inventor: Dennis L. Funck (Wilmington, DE)
Application Number: 5/891,063
Type: Grant
Filed: Mar 28, 1978
Date of Patent: Jan 2, 1979
Assignee: Alcan Aluminum Corporation (Cleveland, OH)
Inventor: Dennis L. Funck (Wilmington, DE)
Application Number: 5/891,063
Classifications
Current U.S. Class:
Utilizing Special Inert Gaseous Atmosphere Or Flushing Mold With Inert Liquid (264/85);
Including Deformation By Application Of Fluid Pressure (264/564);
Cooling (264/237)
International Classification: B29F 308;
International Classification: B29F 308;
