Process for the production of a biaxially oriented polypropylene

Details Process for the production of a biaxially oriented polypropylene Process for the production of a biaxially oriented polypropylene

1998-08-10

1999-12-14

Aftergut, Jeff H.

Plastic and nonmetallic article shaping or treating: processes

With printing or coating of workpiece

264132, 264455, 15624417, 15624424, B29C 4700

Patent

active

060012900

ABSTRACT:
This invention disclose a process for producing a multi-layer biaxially oriented polypropylene synthetic paper of improved gloss and easy-drying printability by means of 3-layer co-extrusion wherein two different PP resin composites are separately extruded by one primary and two secondary extruders and then co-flowed by a same T-die to form a paper sheet having three layer coating material sheet, and through cooling, bi-axial orientation, surface-coating by prime coating and top coating, winding and calendering to be a synthetic paper depending on the required thickness.

REFERENCES:
patent: 3773608 (1973-11-01), Yoshimura et al.
patent: 4121006 (1978-10-01), Harada et al.
patent: 4652409 (1987-03-01), Leese et al.
patent: 5484560 (1996-01-01), Moriyama et al.
patent: 5552011 (1996-09-01), Lin
patent: 5637366 (1997-06-01), Davis et al.

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