Packaging material for photosensitive materials

Details Packaging material for photosensitive materials Packaging material for photosensitive materials

1990-01-11

1991-05-21

Herbert, Thomas J.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Adhesive outermost layer

428354, 428355, 428458, 428461, 428516, 428522, 428913, C09J 702, B32B 1508

Patent

active

050174290

ABSTRACT:
A packaging material for photosensitive materials which comprises a laminated film comprising a thermoplastic resin heat seal layer and a metal foil or metallized flexible sheet layer laminated through a linear low density polyethylene resin extrusion laminating adhesive layer of which the resin composition is 30 to 90 wt. % of linear low density polyethylene resin being a copolymer resin of ethylene and .alpha.-olefin and 70 to 10 wt. % of high pressure low density polyethylene resin, the melt index of the blended resin is 5 to 20 g/10 minutes, the density of the blended resin is 0.870 to 0.930 g/cm.sup.3, the optical density of the transmitted light of said laminated film is more than 4.0, and the moisture permeability of the laminated film is less than 2.0 g/m.sup.2.24 hours.

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