Apparatus for making a zipper for a reclosable thermoplastic bag

Details Apparatus for making a zipper for a reclosable thermoplastic bag Apparatus for making a zipper for a reclosable thermoplastic bag

1995-06-06

1999-10-05

Echols, P. W.

Plastic article or earthenware shaping or treating: apparatus

Preform severing means

Severing means is perforator

425306, 425307, 425814, 72198, 83109, 83176, 83669, B28B 1112

Patent

active

059620404

ABSTRACT:
Disclosed is a zipper for a reclosable thermoplastic bag having opposing rib and groove profiles wherein at least one of the opposing zipper profiles has an longitudinally extending part interlockable and substantially free of interdigitation with the opposing profile and wherein the part is structurally discontinuous along its length. When the rib and groove profiles are interlocked, an audible clicking sound and/or a vibratory or bumpy feel perceptible to the touch is imparted.
Further disclosed is a process and apparatus for making the zipper wherein a zipper profile is extruded and indentions are formed within and along it.

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