Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor
Patent
1986-12-30
1988-07-05
Dawson, Robert A.
Adhesive bonding and miscellaneous chemical manufacture
Methods
Surface bonding and/or assembly therefor
24576, 24587, 156 66, 156498, 156500, 156501, 2641771, 264250, 383 63, 425113, B32B 3130
Patent
active
047552484
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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Geiger Herbert B.
Kain, Jr. Donald L.
Dawson Robert A.
The Dow Chemical Company
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