Zipper construction for enhanced sealing

Details Zipper construction for enhanced sealing Zipper construction for enhanced sealing

2006-06-26

2009-06-02

Sandy, Robert J (Department: 3677)

Buckles, buttons, clasps, etc.

Zipper or required component thereof

Having interlocking surface with continuous cross section

C024S585120, C024SDIG050

Reexamination Certificate

active

07540072

ABSTRACT:
The use of coextruded or integral sealing ribs on zipper flanges enhances the quality of the sealing between the flanges and the walls of a reclosable package. The coextruded sealing ribs may be made from sealing resins or similar materials. Additionally, grip strips are placed on the opposite side of the flanges from the ribs in order to improve the quality of the sealing even further and to inhibit inner flange sealing.

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patent: 5638586 (1997-06-01), Malin et al.
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patent: 2007/0206888 (2007-09-01), Chang
patent: 1 579 780 (2005-09-01), None
patent: WO 2006/090693 (2006-08-01), None

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