Packaging for photographic paper

Details Packaging for photographic paper Packaging for photographic paper

1997-01-24

1998-07-07

Fidei, David T.

Special receptacle or package

For roll or reel

With end protector

206389, B65D 8567

Patent

active

057755019

ABSTRACT:
Daylight loading packaging for photographic paper in the form of rolls comprising lateral, annular flanges and a casing lengthening piece welded to the flanges, which casing lengthening piece is connected at one end to the start of the paper roll and is free at the other end, the flanges presenting a concentric annular hole the edge of which is welded to the edge of the roll tube and which on one side of a paper base has at least one blackened layer forming a light barrier, at least one aluminium layer forming a vapour barrier, at least one layer which increases resistance to puncture, and furthest away from the paper base a layer which permits welding to the casing lengthening piece and the roll tube, and which has on the other side of the paper base a layer of a synthetic polymer applied by extrusion which imparts a tension to the material which prevents an inward collapse of the flange (seen from the roll).

REFERENCES:
patent: 2797804 (1957-07-01), Pomeroy et al.
patent: 5161685 (1992-11-01), Harris et al.
patent: 5246111 (1993-09-01), Shibazaki et al.
patent: 5447829 (1995-09-01), Tamai et al.
Research Disclosure, Bd. 229, Nr. 32, May 10, 1983, Havant GB, Seite 190 XP00209731 H. Cornelissen et al "Roll Package".

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