Patents Represented by Attorney Donald C. Breh

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  • Apparatus and method for making Z-folded zippered film
    Patent number: 5047002
    Abstract: A method and apparatus for producing rolls of thermoplastic film stock wherein zipper elements are interlocked for structural support while the web is open, resembling a "Z" in cross-section, and ready for use on container and packaging machines.
    Type: Grant
    Filed: September 27, 1990
    Date of Patent: September 10, 1991
    Assignee: Zip-Pak, Inc.
    Inventors: Larry M. Zieke, James C. Pawloski