초록 ▼

An improved light-tight package for a roll of a length of web material such as photographic paper or film. The package includes an opaque leader wound around the roll. Folded-over portions of opaque tearable flexible end disks are held in place by adhesive tape strips. A rigid disk is positioned int

An improved light-tight package for a roll of a length of web material such as photographic paper or film. The package includes an opaque leader wound around the roll. Folded-over portions of opaque tearable flexible end disks are held in place by adhesive tape strips. A rigid disk is positioned intermediate the end disks and the end surfaces of the roll. In a preferred embodiment, the adhesive tape is tearable and the leader includes a portion adapted to initiate a tear in the tearable tape and the end disks. Upon unrolling of the package by pulling the leader, the tape tears, and the end disks tear circumferentially, whereby the folded-over portions adhere to the leader when the leader separates from the roll, and the rigid disks provide support for the flexible end disks.

대표청구항 ▼

[ What is claimed is:] [1.] A light-tight package comprising:a core having opposite ends;a length of light-sensitive web material wound about the core to form a roll, the roll having end surfaces at the opposite ends of the core and an outer diameter, the web material having a leading end and a leng

[ What is claimed is:] [1.] A light-tight package comprising:a core having opposite ends;a length of light-sensitive web material wound about the core to form a roll, the roll having end surfaces at the opposite ends of the core and an outer diameter, the web material having a leading end and a length having a first width;a flexible opaque leader attached to the leading end of the web material and wound about the roll through at least a first convolution, the leader having a second width substantially equal to the first width, a length greater than a circumference of the roll, and opposite lateral edges separated by the second width;a pair of rigid disks having an outer diameter less than or equal to the outer diameter of the roll;a pair of flexible opaque end disks covering the end surfaces, the rigid disks positioned intermediate the end disks and the end surfaces, a central portion of each flexible end disk being attached to the core and a peripheral portion of each flexible end disk being folded over a circumferential edge of the leader, each folded over portion having an outer surface and a circumferential edge; andat least one strip of adhesive tape having an edge, the at least one strip adhering to the outer surface of the folded over portion and to the outer surface of the leader for at least one convolution.