Adhesive bonding and miscellaneous chemical manufacture – Surface bonding means and/or assembly means therefor – With cutting – punching – piercing – severing – or tearing
Patent
1988-08-01
1989-11-07
Schmidt, Frederick R.
Adhesive bonding and miscellaneous chemical manufacture
Surface bonding means and/or assembly means therefor
With cutting, punching, piercing, severing, or tearing
156 66, 493213, 493380, B31B 190, B31B 2372, B32B 3110
Patent
active
048789879
ABSTRACT:
A method and apparatus for forming film capable of being converted into bags in an form, fill and seal machine or for providing bags attached to each other in end-to-end relationship including relatively advancing a continuous sheet of thin plastic film along a path having a fastener station therealong, moving first and second thermoplastic flexible fastener members laterally from opposite sides of the sheet to extend transversely substantially to the center thereof and attaching said fastener members to the surface of the sheet whereby the sheet can thereafter be formed into bags in an form, fill and seal machine or folded longitudinally to join the fastener members and to form a side seal to form a completed series of bags by cross-seaming the material at predetermined spaced intervals.
REFERENCES:
patent: 4328062 (1982-05-01), Off et al.
patent: 4355494 (1982-10-01), Tilman
patent: 4617683 (1986-10-01), Christoff
patent: 4709398 (1987-11-01), Ausnit
patent: 4735674 (1988-04-01), Pace
patent: 4736450 (1988-04-01), Van Erden et al.
patent: 4744856 (1988-05-01), Williams
Minigrip Inc.
Schmidt Frederick R.
Terrell William E.
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