Package tightener and method

Details Package tightener and method Package tightener and method

1974-08-26

1976-06-29

McGehee, Travis S.

Package making

Interrelated or safety controls

53229, B65B 1148

Patent

active

039656454

ABSTRACT:
This disclosure relates to an improvement in a machine for automatically wrapping articles with a sheet of shrinkable plastic film to form individual packages. It is proposed to provide the machine with a support roller over which partially formed packages pass with the support roller having associated therewith a brake for retarding the rotation of the roller in timed relation to the passage of partially formed packages with the roller, when braked, frictionally engaging a leading bottom panel of the sheet material so as to tighten the sheet material around the article being packaged. The brake is automatically released as the rear half of the package engages the roller so as to permit the freedom of movement of the rear half of the package thereover.

REFERENCES:
patent: 2744371 (1956-05-01), Hoppe
patent: 3340675 (1967-09-01), Minalga
patent: 3470814 (1969-10-01), Tschappu
patent: 3596434 (1971-08-01), Zelnick
patent: 3660961 (1972-05-01), Ganz
patent: 3683586 (1972-08-01), Duckhinsky
patent: 3914893 (1959-12-01), Berst

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