Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor
Patent
1985-03-05
1986-10-21
Dawson, Robert A.
Adhesive bonding and miscellaneous chemical manufacture
Methods
Surface bonding and/or assembly therefor
24576, 24587, 156164, 156204, 15624425, 156459, 156465, 156499, 156500, 264177R, 383 63, 383 95, B29D 500
Patent
active
046183833
ABSTRACT:
In the manufacture of plastic bags having interlocking profiled extrusions for the closure, the extruded plastic profiles are applied to a moving web of film immediately after extrusion of the profiles. The profiles are fused to the web on a first section of a fusing/cooling arcuate plate-like support member. Thereafter, the web is moved to a second cooled section of the arcuate plate-like support which is maintained at a temperature to allow the profiles to freeze to the web. The moving web of film is maintained under tension so that contraction of the film upon release compensates for the contraction of the locking profile as it cools to prevent puckering of the web. The locking profiles are applied to the web in an in-line process, which includes folding and heat sealing the moving web of film to form plastic bags.
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Dawson Robert A.
Gilman Michael G.
McKillop Alexander J.
Mobil Oil Corporation
Speciale Charles J.
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