Adhesive bonding and miscellaneous chemical manufacture – Delaminating processes adapted for specified product – Delaminating in preparation for post processing recycling step
Patent
1978-05-25
1980-07-29
Coan, James F.
Adhesive bonding and miscellaneous chemical manufacture
Delaminating processes adapted for specified product
Delaminating in preparation for post processing recycling step
93 33H, 156290, 156253, 156510, 1565831, B31B 164, B31B 2760
Patent
active
042145090
ABSTRACT:
A method and apparatus for making bags from a thin thermoplastic material supplied as either a flat tube or a double-folded web to an advancing supporting path such as the common opposite flights of two sets of endless conveyors, thereby applying the loop-system principle, the supporting conveyors clamping the material at spaced intervals with two sets of clamping beams, lying close to each other, a separate set of cooperating sealing beams cooperating with the thermoplastic material for making the seals within the space between both sets of clamping beams.
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patent: 3223027 (1965-12-01), Soda et al.
patent: 3379101 (1968-04-01), Piazze
patent: 3419453 (1968-12-01), Levenson, Jr.
patent: 3666611 (1972-05-01), Joa
patent: 3901754 (1975-08-01), Simpson et al.
patent: 3971299 (1976-07-01), Whittle et al.
patent: 4061458 (1977-12-01), Windmoller et al.
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