Slot-cast intergrated interlocking film closure structure
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United States of America Patent
Stats
-
Jul 5, 1988
Grant Date -
N/A
app pub date -
Dec 30, 1986
filing date -
Dec 30, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method and apparatus is disclosed for producing a reclosable bag film. The bag film is produced by extruding a bag 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 web portion and joined to the thicker second portions before the thicker second portions have become cooled to an ambient temperature.
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