Slot cast integrated interlocking film closure structure

Details Slot cast integrated interlocking film closure structure Slot cast integrated interlocking film closure structure

B - Operations, Transporting

29

C

220/12, 18/746,

B29C 47/06 (2006.01) B29C 47/00 (2006.01) B29C 47/12 (2006.01) B65D 33/25 (2006.01)

Patent

CA 1283269

ABSTRACT A method and apparatus is disclosed for producing a reclosable bag film. The bag film is produced by extruding a film web having a relatively thinner first portion and relatively thicker second portions which are formed unitarily with the first portion. Closure members preferably in the form of male and female fastener profiles, are formed separately from the film web and joined to the thicker second portions before the thicker second portions have become cooled to an ambient temperature. 35,324-F

554443

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