Stretch film wrapping device

Details Stretch film wrapping device Stretch film wrapping device

1983-05-02

1985-08-20

Levy, Stuart S.

Winding, tensioning, or guiding

Coil holder or support

Spool or core

242 96, 242 99, B65H 2306, B44C 700

Patent

active

045359512

ABSTRACT:
A stretch film wrapping device for rotatably supporting a roll of plastic film having a tubular rigid central core includes a pair of opposed core holders interconnected by a length adjustable axle member to effect clamping of the film roll between the core holders. The bottom core holder is mounted on a base member. The top core holder is rotatably mounted on the axle member and is axially shiftable upwardly thereon. A top tension control assembly above the top core holder at the top of the axle member adjusts the clamping force on the film roll and includes a spring which engages the top core holder to resist upward axial shifting of the top core holder when the axle member is adjusted to reduce the distance between the core holders to effect clamping of the film roll between the core holders. The clamping force between the core holders on the film roll varies in direct proportion to the force of the spring in resisting upward axial movement of the top core holder with respect to the axle resulting in precise adjustment of the film tension for the wrapping operation.

REFERENCES:
patent: 556407 (1896-03-01), Esmond
patent: 811136 (1906-01-01), Eveland
patent: 2129903 (1938-09-01), Benson
patent: 2142582 (1936-01-01), Wright
patent: 2483528 (1949-10-01), Christoff
patent: 4102513 (1978-07-01), Guard

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