Gusset bag for photographic photosensitive materials

Details Gusset bag for photographic photosensitive materials Gusset bag for photographic photosensitive materials

1988-07-22

1989-10-24

Epstein, Henry F.

Stock material or miscellaneous articles

Hollow or container type article

Nonself-supporting tubular film or bag

206455, 383 88, 383 90, 428130, 428194, 428195, 428214, 428507, 428516, B65D 8500, B32B 2704

Patent

active

048761257

ABSTRACT:
A single-sheet gusset bag for photographic photosensitive materials comprising a laminated sheet of which the inner surface layer is a light-shielding polyolefin resin film layer and the outer surface layer is a heat-resistant flexible sheet layer, and having a botom seal portion fixed by a hot-melt adhesive having a softening point by ring and ball method of 75 to 115 C of which the coating amount in the center portion is less than the coating amount of the side portion.
In the gusset bag of the invention, the bottom seal portion can be effectively sealed without incidence of fogging and uneven gloss caused by the heat of the hot-melt adhesive. Since the gusset bag is formed of a single sheet, packaging is readily achieved. The cost of the packaging material is also inexpensive.

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