Plastic zipper with end stops and method for manufacturing same

Details Plastic zipper with end stops and method for manufacturing same Plastic zipper with end stops and method for manufacturing same

2003-04-04

2008-08-12

Lavinder, Jack W. (Department: 3677)

Buckles, buttons, clasps, etc.

Bag fasteners

Resilient slot bag tie

C383S063000

Reexamination Certificate

active

07409750

ABSTRACT:
A method for producing a zipper for use in the production of reclosable plastic bags of the type having the zipper extending across a top end of the bag. The zipper has a first profile member and a second profile member that is interengageable with the first profile member. At bag length intervals of the zipper notches are formed by removing at least a portion of the first profile member and a portion of said second profile member. A mold is positioned about each of the notches and a molten thermoplastic material is introduced into the mold cavity filling the notch and extending beyond the notch and over the zipper top so that when the molten thermoplastic material is cooled an end stop is formed in situ at each of said notches.

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