Packaging material for photographic photosensitive materials

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

1990-10-09

1993-07-13

Herbert, Jr., Thomas J.

Stock material or miscellaneous articles

Composite

Of polyamide

428910, B32B 2708

Patent

active

052272559

ABSTRACT:
A packaging material for photographic photosensitive materials which comprises a biaxially stretched polyamide resin film layer and a very low density ethylene-.alpha.-olefin copolymer resin film layer laminated through an adhesive layer and contains a light shielding material at least in one layer. By laminating the very low density ethylene-.alpha.-olefin copolymer resin film to the biaxially stretched polyamide resin film through the adhesive layer, tear strength, impact strength and the like of the laminated film are improved by the notch effect. Particularly, resistance to the occurrence of pinholes is much superior to the other laminated films containing similar ethylene-.alpha.-olefin copolymer resin film layer.

REFERENCES:
patent: 4356224 (1982-10-01), Akao et al.
patent: 4663218 (1987-05-01), Akao
patent: 4784906 (1988-11-01), Akao

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