Zipper for reclosable thermoplastic bag
AssigneeDowbrands L.P.
InventorsDouglas 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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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.
Claims7
A zipper closure for a reclosable thermoplastic bag, comprising two opposing, longitudinally-extending and interlockable rib and groove profiles, wherein a part of one or both of the profiles is divided into segments of materials having different elastic moduli interlockable with a portion of the opposing profile, said interlockable profiles being substantially free of interdigitation with one another, the zipper producing an auditably or tactically perceptible difference in the force required to close adjacent portions of the zipper.
Dependencies are inferred from the claim text.