Importance

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Abstract

A package for light sensitive materials, such as photographic film, generally includes a cylindrical body fabricated from wound paperboard or plastic and includes a closure member at each end to define a light excluding container. The body of the container includes end rings affixed to the body and capable of receiving either a fixed or a removable closure at each end. The ring is permanently attached to the cylindrical body and may provide cooperating means for receiving a removable closure on either or both ends of the container. A closure is removably secured to at least one end of the container by interengagement with cooperating threads or a bayonet joint. Each closure, whether permanent or removable, also includes a centering device which extends into the core of the wound film package and supports the film in a position out of contact with the interior of the container. A cooperating sealing device between the ring and the closure is provided to insure positive light exclusion from the interior of the package.

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First Claim