The packing has a smooth, tension-proof, plastic and metallic foil arrangement which surrounds a stack of films in a light-proof and weather-proof manner. Two parallel weld seams weld the foil together at the stack edges and a third weld seam extends vertically thereto. The film stack is embraced somewhat loosely between the welds. The foil extends as a holding strip beyond one of the parallel weld seams and as a substantially longer pull strap beyond the other weld seam. A gusset of the foil arrangement disposed between one weld seam and the film stack has a width allowing the gusset to be cut open and off.
A package which loads a stack of single films into an internally bladed daylight cassette, has a waisted middle part accommodating the stack, a strip for retaining the package in the cassette, a transverse weld following the retaining strip, a pull tab for pulling the package out of the cassette, a transverse weld in the pull tab and a pair of longitudinal welds in the upper and lower side of the pull tab with widened portions in the zone where the cassette blades enter, which welds continue to the transverse weld.
A film package containing a stack of films provided with a clamp notch at a side edge in a flexible lighttight envelope is held vertically in a lighttight loading chamber. The films are held by a clamp engaging with the notch from outside the film package. The lower end of the envelope is then cut, and the clamp is released from the notch to make the films fall from the envelope. Then, a shutter is closed between the envelope and the films for shielding the films from light.
A radiographic film package for non-destructive testing, comprising a radiographic film sheet, an intensifying screen with a layer of lead bonded to a paper foil, and a vacuum heat-sealed wrapper with a layer of aluminium and a heat-sealable easy-peelable thermoplastic layer.
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. The first upper panel is secured to the lower panel by permanent heat seals extending adjacent their respective leading and side edges. The second upper panel is releasably secured to the lower panel by readily peelable seals extending adjacent their respective trailing and side edges, while also being releasably secured to the first upper panel by a readily peelable seal extending adjacent the leading edge of the second upper panel and the trailing edge of the first upper panel.
A magazine receives a package having a stack of film sheets, such as x-ray film sheets, enclosed within a light-tight flexible bag. When the bag is positioned within the magazine and the magazine closed, the bag is cut and then removed from the magazine through is lightlock. A pair of stripper bars in the magazine are located between the lightlock and the stack of film sheets in the bag. The bars form a curved slot that enables the bag to be withdrawn through the slot while the bars block movement of the film sheets through the slot with the bag.
