Method of producing an electrically charged film

Details Method of producing an electrically charged film Method of producing an electrically charged film

2005-01-25

2005-01-25

Eashoo, Mark (Department: 1732)

Plastic and nonmetallic article shaping or treating: processes

Direct application of electrical or wave energy to work

Extrusion molding

C264S484000

Reexamination Certificate

active

06846449

ABSTRACT:
A method of producing an electrically charged film includes the steps of forming a molten thermoplastic material into a web, electrically charging the web while the web is at a temperature substantially at or above a solidification temperature thereof, cooling the web below the solidification temperature thereof after charging and winding the web into individual rolls immediately following the cooling step.

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