Machine for covering a pallet load with shrinkable plastic film

Details Machine for covering a pallet load with shrinkable plastic film Machine for covering a pallet load with shrinkable plastic film

1969-10-30

1976-06-29

Lake, Roy

Package making

With cover-adjunct application or formation

By printing

53386, B65B 4330, B65B 5302

Patent

active

039656527

ABSTRACT:
A loaded pallet is carried on a conveyor belt under a support frame carrying one or more rolls of double-layer plastic film. Motor driven drive rollers engage the end of a roll and draw it down where it is engaged by suction heads on opposite sides of the film. The suction heads carried by motor driven flexible suction ducts are moved down on opposite sides of the load to enclose the loaded pallet. A heater assembly fuses a seam in the film above the load and a cutter cuts the film above the seam. The suction ducts may have articulated duct sections. The film is folded flat on a roll and may be tubular or open at one lateral edge.

REFERENCES:
patent: 3112586 (1963-12-01), Luetzow
patent: 3210909 (1965-10-01), Cochrane
patent: 3308601 (1967-03-01), Masters
patent: 3429095 (1969-02-01), Huson
patent: 3508375 (1970-04-01), Myers
patent: 3522688 (1970-08-01), Kaliwoda et al.
patent: 3579948 (1971-05-01), Lerner

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