Container for photographic film cartridge

Details Container for photographic film cartridge Container for photographic film cartridge

1989-12-08

1992-01-28

Seidleck, James J.

Stock material or miscellaneous articles

Hollow or container type article

Polymer or resin containing

524583, 524584, B27N 502

Patent

active

050843168

ABSTRACT:
A container body for a photographic film cartridge which comprises propylene-ethylene random copolymer resin composed of 96 to 98.5 wt. % of propylene units and 1.5 to 4 wt. % of ethylene units having a melt flow rate of 10 to 70 g/10 minutes and a molecular weight distribution of 2.5 to 5.5, Rockwell Hardness R of more than 80, and an organic nucleating agent. In the container body for a photographic film cartridge of the invention, breakage and cracking do not occur by the improvement in dropping strength. The white powder caused by the friction with the film cartridge packaged therein is prevented by the improvement of Rockwell hardness and wear resistance. The white powder caused by the sublimation or bleeding out of the organic nucleating agent is also prevented by the resin composition.

REFERENCES:
patent: 4639386 (1987-01-01), Akao
patent: 4844961 (1989-07-01), Akao
patent: 4921737 (1990-05-01), Akao
patent: 4960626 (1990-10-01), Akao et al.

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