The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 07, 1998
Filed:
Jan. 24, 1997
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).