Package making – Methods – Applying a partial cover
Patent
1985-03-01
1986-12-16
Sipos, John
Package making
Methods
Applying a partial cover
53441, 53556, 53586, B65B 1108
Patent
active
046286683
ABSTRACT:
Apparatus and method for wrapping a resiliently stretchable film wrap around a group of articles stacked on a pallet, with the film wrap tensioned to a desired tension, by feeding the film wrap along a feed path from supply rolls to a wrapping station, with tension rollers placed serially along the feed path such that the film wrap is coupled for movement with the surface of each tension roller, the tension rollers being driven so that the surface speeds of the serially located roller surfaces differ from one another in order to stretch and tension the film wrap to a given tension, and the stretched and tensioned film wrap being applied to the stacked articles at a rate relative to the advancement of the film wrap from the tension rollers so as to attain the desired tension in the applied film wrap while limiting the magnitude of forces exerted upon the unit load by the tensioned film wrap.
REFERENCES:
patent: 1926457 (1933-09-01), Shields
patent: 1982720 (1934-12-01), Woodhead
patent: 3561134 (1971-02-01), Kruckels
patent: 3589091 (1971-06-01), Cloud
patent: 3672116 (1972-06-01), Ingmarson
patent: 3866389 (1975-02-01), Elsner
patent: 4302920 (1981-12-01), Lancaster
patent: 4313288 (1982-02-01), Tassi
patent: 4413463 (1983-11-01), Lancaster
Bemis Company Inc.
Sipos John
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