发明授权
US4413109A Embossed films obtained from ethylene-propylene copolymers, and a process and apparatus for manufacturing the films 失效
由乙烯 - 丙烯共聚物获得的压花膜,以及用于制造薄膜的方法和装置

Embossed films obtained from ethylene-propylene copolymers, and a
process and apparatus for manufacturing the films
摘要:
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.
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