Packaging material for photographic photosensitive materials

Details Packaging material for photographic photosensitive materials Packaging material for photographic photosensitive materials

1987-06-22

1989-10-24

Buffalow, Edith

Stock material or miscellaneous articles

Coated or structually defined flake, particle, cell, strand,...

Staple length fiber

428 353, 428349, 428408, 428516, 428913, B29D 2200

Patent

active

048761290

ABSTRACT:
A packaging material for photographic photosensitive materials which comprises a simultaneously coextruded multiple layer light-shielding film comprising the inner layer being a heat-sealing layer containing 30 to 99.49 wt. % of linear low density polyethylene resin, 0.5 to 10 wt. % of carbon black and 0.01 to 1 wt. % of a lubricant, having 0.12 to 0.37 of a statical friction coefficient and the outer layer formed of a thermoplastic resin having 0.19 or more of a statical friction coefficient which is greater than the above inner layer by 0.05 or more, and having 10 g/15 mm width or more of the binding strength between each layer of the coextruded multiple layer film. This coextruded multiple layer film may contain an intermediate layer formed of a thermoplastic resin.

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