Embossed films obtained from ethylene-propylene copolymers, and

Details Embossed films obtained from ethylene-propylene copolymers, and Embossed films obtained from ethylene-propylene copolymers, and

1981-03-20

1983-11-01

Levin, Stanford M.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

264280, 264515, 425363, 425376R, 425383, 428156, 525240, B29D 714, C08F21016

Patent

active

044131097

ABSTRACT:
An embossed ethylene-propylene copolymer film having a thickness of less than or equal to 24 microns. A method and apparatus for making the film by blow-extruding the ethylene-propylene copolymer into a tubular web, pinching the tubular web between pinch rolls, and embossing the pinched web by passing it between an embossing roll and a pressure roll.

REFERENCES:
patent: 3857144 (1974-12-01), Bustin
patent: 3911187 (1975-10-01), Raley
patent: 3950480 (1976-04-01), Adams et al.

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