Process for producing thermoformable polypropylene films and she

Details Process for producing thermoformable polypropylene films and she Process for producing thermoformable polypropylene films and she

1991-03-01

1993-05-11

Hoag, Willard

Plastic and nonmetallic article shaping or treating: processes

Direct application of fluid pressure differential to...

Starting material is nonhollow planar finite length preform...

2642101, 264291, 264294, B29C 5104

Patent

active

052098923

ABSTRACT:
A process for thermoforming thermo-plastics including a random copolymer of polypropylene and polyethylene. The process including stretching in at least one direction, a film or sheet containing polypropylene and polyethylene random copolymer to partially orient the sheet sufficiently as to reduce sag during thermoforming and thermoforming the stretched sheet.

REFERENCES:
patent: 3859028 (1975-01-01), Van der Gaag et al.
patent: 3929953 (1975-12-01), Van der Gaag et al.
patent: 4101625 (1978-07-01), Haley
patent: 4198256 (1980-04-01), Andrews
patent: 4256687 (1981-03-01), Yazaki et al.
patent: 4307049 (1981-12-01), Winstead
patent: 4404162 (1983-09-01), Miki
patent: 4415520 (1983-11-01), Wiggins
patent: 4430852 (1984-02-01), Hatcher
patent: 4496408 (1985-01-01), Hahn
patent: 4666544 (1987-05-01), Whiteside et al.
Hackh'Chemical Dictionary, 4th ed McGraw-Hill, New York 1972, pp. 534-535.
"Modern Plastics Encyclopedia", R. Juran, Editor, McGraw-Hill Inc., 1990.
J. Arganoff, Editor, Modern Plastics Encyclopedia, McGraw-Hill, Inc., (1985), pp. 70-77 Aug. 27, 1990.
D. Irwin & H. J. Foster, Modern Plastics Encyclopedia, McGraw-Hill, Inc., (1989), pp. 301-306.
G. Crespi & L. Luciani, Kirk-Othmer Encyclopedia of Chemical Technology, Third Edition, John Wiley & Sons, New York, (1981), vol. 16, pp. 453-369.
D. Schulz & D. Tak, Kirk-Othmer Encyclopedia of Chemical Technology, Third Edition, John Wiley & Sons, New York (1979), vol. 6, pp. 798-818.
Z. Tadmar & G. Gogos, Principles of Polymer Processing, John Wiley & Sons, New York, (1979), pp. 7-11, 624-631, 637-641.
W. Park & J. Conrad, Extrusion and Other Plastics Operations, John Wiley & Sons, (1971), pp. 103-135.

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