Wrapping materials for photographic materials

Details Wrapping materials for photographic materials Wrapping materials for photographic materials

1984-07-16

1986-04-22

Ives, Patricia C.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Including a second component containing structurally defined...

428340, 428408, 428513, 428516, 428906, 430538, B32B 516, B32B 900

Patent

active

045842345

ABSTRACT:
Wrapping materials for photographic materials comprising laminated layers of a paper support and at least one thermoplastic resin layer superposed on at least one surface of said paper support; said thermoplastic resin layer comprises a blended resin of (a) a high-density polyethylene having a density of 0.950 g/cm.sup.3 or more and a melt index of 10-40 and (b) a low-density polyethylene having a density of 0.930 g/cm.sup.3 or less and a melt index of 1-40, the weight ratio of (b)/(a) being 70/30-5/95, preferably 70/30-20/80, more preferably 60/40-40/60.
At least one layer of said wrapping materials optionally comprises light-shielding substance in an amount of 1.0-30 g/m.sup.2.

REFERENCES:
patent: 4312937 (1982-01-01), Kasper et al.
patent: 4331508 (1982-05-01), Miyama et al.
patent: 4352861 (1982-10-01), von Meer et al.
patent: 4357191 (1982-11-01), Bullard et al.
patent: 4447524 (1984-05-01), Uno et al.
patent: 4452846 (1984-06-01), Akao

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