Process of 3-layer co-extruded biaxial oriented polypropylene (B

Details Process of 3-layer co-extruded biaxial oriented polypropylene (B Process of 3-layer co-extruded biaxial oriented polypropylene (B

1994-10-14

1996-09-03

Thurlow, Jeffery R.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156229, 264414, 264423, 264469, 264 41, 264154, 26417314, 26417315, 2642888, B29C 3510

Patent

active

055520111

ABSTRACT:
The present invention is related to a process of manufacturing polyproylene (PP) synthetic paper and the product thereof, and particularly to a process of manufacturing synthetic paper by means of 3-layer co-extrusion wherein PP resin composite and resin composite are respectively extruded as an extrudate co-flow by one primary extruder and two secondary extruders and by same one T-type die to be a paper sheet with a paper surface layer, an intermediate layer and a paper surface layer, and through cooling/shaping, biaxial orientation, corona discharge treatment and laminating/rolling to be a synthetic paper depending on the required thickness.

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patent: 4780364 (1988-10-01), Wade et al.
patent: 5209884 (1993-05-01), Wood, Jr.
patent: 5211898 (1993-05-01), Shinmoto
patent: 5387574 (1995-02-01), Campbell et al.

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