Polymer films containing platelet particles

Details Polymer films containing platelet particles Polymer films containing platelet particles

1985-04-15

1986-10-21

Herbert, Thomas J.

Stock material or miscellaneous articles

Structurally defined web or sheet

Including components having same physical characteristic in...

428220, 428331, 4284744, B32B 702, B32B 516, B32B 2734

Patent

active

046185283

ABSTRACT:
Thin polymer films containing small sized platelet type filler. The polymer has a melt index of from 0.01 to 10 grams per 10 minutes at 190.degree. C. to 250.degree. C. as measured on ASTM Test No. D-1238 at a load of 1000 to 2160 grams. The preferred polymer is polycaprolactam or high density polyethylene. There is from 10 to 50 percent of a platelet filler having an average equivalent diameter of from 1 to 8 micrometers, a maximum equivalent diameter of about 25 micrometers, and an average thickness of less than 0.5 micrometers. The preferred filler is talc. The film is from 10 to 100 micrometers thick and can be a single ply or a laminate.

REFERENCES:
patent: 3663260 (1972-05-01), Poppe et al.
patent: 3903234 (1975-09-01), Ikeda et al.
patent: 3949114 (1976-04-01), Viola et al.
patent: 4082880 (1978-04-01), Zboril
patent: 4369222 (1983-01-01), Hedrick et al.
Arina et al, Mineral Fillers in Low Density-Polyethylene Films, Helsinki University of Technology.
Abstract of French Pat. No. 1299089, 7-1962.
Abstract of Great Britain Pat. No. 1136350, 12-1968.

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