Packaging material for photosensitive materials comprising polyo

Details Packaging material for photosensitive materials comprising polyo Packaging material for photosensitive materials comprising polyo

1979-07-25

1981-03-31

Cannon, James C.

Special receptacle or package

With specified material for container or content

Plural different lamina wall

229 53, 229 55, 428218, 428240, 428244, 428246, 428283, 428339, 428340, 428461, 428507, 428508, 428509, 428513, 428516, B32B 1508, B32B 2708, B32B 2720, B32B 2732, B65D 6540

Patent

active

042588480

ABSTRACT:
A packaging material for photosensitive materials comprising a laminate of two or more high-density polyethylene films incorporating carbon black, the films being uniaxially stretched at a draw ratio in the range of from about 2.2 to 4.2 and the stretching axis of one film forming an angle of from about 45 to 90 degrees with those of the film(s) nearest it.

REFERENCES:
patent: 3322613 (1967-05-01), Rasmussen
patent: 3445055 (1969-05-01), Port et al.
patent: 3816230 (1974-06-01), Carreras et al.
patent: 3973063 (1976-08-01), Clayton
patent: 4022646 (1977-05-01), Casey
patent: 4147291 (1979-04-01), Akao et al.

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