Automatic full-web stretch-wrapping apparatus

Details Automatic full-web stretch-wrapping apparatus Automatic full-web stretch-wrapping apparatus

1993-08-05

1995-04-25

Johnson, Linda B.

Package making

Apparatus for contraction of cover by stretching or shrinking

53587, B65B 1100, B65B 5300

Patent

active

054088089

ABSTRACT:
An automatic stretch-wrapping apparatus for wrapping a load, including empty PET bottles, with a stretchable film. The apparatus includes a turntable for placing the load thereon, and the stretchable film is supplied from a roll of stretchable film in a vertical position via film tensioning rollers to a gripper device. The gripper device is mounted on the turntable for gripping the leading end of the film and can rotate not only with the turntable but also relative to the turntable. Also, a swing arm device is arranged for movement toward and away from the gripper device to cooperate with the gripper device and includes pusher blades for pushing the film toward the gripping fingers of the gripper device, a heatsealer, and a cutter. It is possible to automatically wrap the load by the film in only one turn thereof.

REFERENCES:
patent: 3514920 (1970-06-01), Hoffler et al.
patent: 4077179 (1978-03-01), Lancaster et al.
patent: 4300326 (1981-11-01), Stackhouse
patent: 4413463 (1983-11-01), Lancaster
patent: 4514955 (1985-05-01), Mouser et al.
patent: 4662151 (1987-05-01), Mathes et al.
patent: 4779396 (1988-10-01), Stackhouse
patent: 4972656 (1990-11-01), Haugstad
patent: 5003752 (1991-04-01), Matsumoto
patent: 5161349 (1992-11-01), Lancaster et al.

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