Abstract: A zipper closure for a reclosable thermoplastic bag includes two opposing interlockable rib and groove profiles, wherein at least a part of one or both of the profiles is divided into segments of materials having different elastic moduli. The zipper provides an audibly and/or tactilely perceptible indication of proper interlocking of the profiles.
Type:
Grant
Filed:
May 13, 1991
Date of Patent:
August 18, 1992
Assignee:
Dowbrands L.P.
Inventors:
Douglas P. Gundlach, Michael J. Banco, Larry R. Erickson, Marvin J. Kreh, William A. Kirksey, William E. LeBoeuf, Kevin J. Wagers, John O. McCree, Brian C. Dais, Jose Porchia
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