Container for photographic film cartridge

Details Container for photographic film cartridge Container for photographic film cartridge

1987-10-21

1989-07-04

Dees, Jose G.

Stock material or miscellaneous articles

Hollow or container type article

Polymer or resin containing

206455, 206407, 524580, 524585, B27N 502

Patent

active

048449610

ABSTRACT:
In a container for a photographic film cartridge having a body and a cap made of a high-pressure branched low-density polyethylene resin and fitted to said body, the improvement comprising that said polyethylene resin has a melt index of 10 to 50 g/10 minutes, a density of 0.920 to 0.935 g/cm.sup.3 and a molecular weight distribution of 3.3 to 8.5 and contains 0.01 to 0.9 wt. % of a lubricant.
This resin for the cap is excellent in fluidity, mold shrinkage, moldability, etc., and molding troubles and coloring troubles at molding remarkably decrease. The molding cycle is also shortened. The resin is particularly suitable for molding using a mold for many pieces at once.

REFERENCES:
patent: 3455863 (1969-07-01), Williams
patent: 4117193 (1978-09-01), Tsuchiya et al.
patent: 4485217 (1984-11-01), Bunter et al.
patent: 4525257 (1985-06-01), Kurtz et al.
patent: 4639386 (1987-01-01), Akao
patent: 4738942 (1988-04-01), Nowlin
Patent Abstracts of Japan, vol. 6, No. 135 (C-115), Jul. 22, 1982.
R. Gachter et al., "Taschenbuch der Kunststoff-Additive", 1979, pp. 252-253.
Patent Abstracts of Japan, vol. 4, No. 16 (C-72), Feb. 7, 1980, p. 24 C 72.

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