Support sheet for photographic printing sheet

Details Support sheet for photographic printing sheet Support sheet for photographic printing sheet

1991-09-26

1993-01-12

Thibodeau, Paul J.

Stock material or miscellaneous articles

Structurally defined web or sheet

Including components having same physical characteristic in...

428335, 428342, 428500, 428511, 430538, B32B 702, B32B 2710

Patent

active

051789361

ABSTRACT:
A support sheet for a photographic printing sheet, having a high resistance to scratching, curling and a enhanced ability to be sharply cut, and provided with front and back surface coating layers formed respectively on the front and back surfaces of a substrate sheet and comprising, as a main component, a polyolefin resin; the polyolefin resin in the front surface coating layer comprising 30 to 70% by weight of a linear low density ethylene-propylene or butene-1 copolymer (L-LDPE) having a density of 0.915-0.935 g/cm.sup.3 and a melt index of 15-30 g/10 min and 30 to 70% by weight of a high pressure-processed low density polyethylene (HP-LDPE) having a density of 0.915-0.928 g/cm.sup.3 and a melt index of 1 to 5 g/10 min.

REFERENCES:
patent: 4396671 (1983-08-01), Wanka et al.
patent: 4452846 (1984-06-01), Akao
patent: 4801509 (1989-01-01), Uno et al.
Polyolefins: Structure and Properties by Herman V. Boenig, p. 55 (1966) Elsevier Publishing Company.

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