Method for producing an extruded molded article of ethylene...

Details Method for producing an extruded molded article of ethylene... Method for producing an extruded molded article of ethylene...

2011-01-18

2011-01-18

Harlan, Robert D. (Department: 1796)

Plastic and nonmetallic article shaping or treating: processes

Direct application of electrical or wave energy to work

Extrusion molding

C526S348100, C524S523000

Reexamination Certificate

active

07871557

ABSTRACT:
The object is to provide a method for producing a film excellent in a quality of odorless or free from deteriorating taste of food contained in a package of the extruded molded article by using an ethylene-α-olefin copolymer excellent in extrusion molding processability. This object is achieved by a method for producing an extruded molded article comprising a step of extruding a copolymer of ethylene and α-olefin of from 3 to 20 carbon atoms having an activation energy for melt flow of not less than 50 kJ/mol under one of the following conditions:(a) a temperature of melted resin at die gap of T-die is not more than 200° C.,(b) a temperature of melted resin at die gap of tubular tie is not more than 170° C.

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