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US 7,100,487 B2Granted
Punch device for creating a guide notch in a polymeric fastener attached to a plastic package
AssigneePactiv Corporation
InventorAaron L. Strand
Life of this patent
Estimating the term…
Abstract
A method and apparatus for punching a guide notch in a polymeric zipper having a male and female track with respective fins. The method includes sliding the zipper into position in a punch housing and punching a guide notch into the zipper. The guide notch is defined by a plurality of edges in the zipper, which are guided out of the punch housing.
Claims21
A punching apparatus for punching a guide notch in a strip of a polymer zipper, said zipper having a female track and a male track, said punching apparatus comprising:
- a housing having a first slot, a second slot, and an open region between said first and second slots, said first and second slots defining a slot plane extending therebetween, said slot plane having upper and lower slot plane boundaries corresponding to respective upper and lower edges of said first and second slots;
- a punch slideably moveable within said open region, said punch entering said open region orthogonal to said slot plane defined by said first and second slots, at least a portion of said punch being aligned with one of said upper and lower slot plane boundaries;
- and
- a guide slideable into said open region, said guide entering said open region in a plane that is generally parallel to said slot plane.
1 more element
Dependencies are inferred from the claim text.