Abstract: A package comprising first, second and third flexible panels of light-blocking material secured together for holding light sensitive sheet materials therein, with one of the panels being arranged to be completely peeled away and separated from the other panels to provide access to the materials within the package. The package is arranged for insertion into a rigid container where the sheets can be removed for processing. The package comprises a lower panel, a first upper panel, and a second upper panel. Each of the panels is formed of a web of flexible, light-blocking, material, e.g., a laminate of polyester and polyethylene, one or both of which incorporating a light blocking agent. The lower panel has a leading edge, a trailing edge, and a pair of side edges. The first upper panel has a leading edge, a trailing edge, and a pair of side edges. The second upper panel has a leading edge, a trailing edge, and a pair of side edges.

Abstract: A flexible tubular package having a longitudinal axis and formed from flexible sheet material. The package comprising first and second panels disposed opposite each other and connected on laterally opposite sides. The upper end portion of the package terminates in a free edge and is folded over itself along a transverse fold line to form a flap with the portion of the first panel between the free edge and the fold line abutting the contiguous portion of the first panel below the fold line. The abutting portions are releasably secured to each other by adhesive. The flap includes at least one opening extending through the first and second panels to form a handle. A first permanent seal line extends transversely across the panels adjacent the fold line from one of the sides to an intermediate point, while a second peelable seal line extends transversely across the panels adjacent the fold line from the intermediate point to the other of the sides.