Patents Represented by Attorney Cederic M. Richeson

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  • Differentially cross-linked multilayer film
    Patent number: 5055328
    Abstract: A tubular article formed of multilayer differentially cross-linked heat sealable film suitable for the manufacture of bags used in the packaging of meats. The multilayer film contains at least two layers the inner of which is a heat sealable layer containing an antioxidant cross-linking inhibitor in an amount sufficient to inhibit the cross-linking of that layer by irradiation. Accordingly, upon exposure of the multilayer film to radiation, the outer layer will be cross-linked to a greater extent than the first heat sealable layer.
    Type: Grant
    Filed: June 16, 1989
    Date of Patent: October 8, 1991
    Assignee: Viskase Corporation
    Inventors: Charles P. Evert, John Nelson