Package making – Apparatus for contraction of cover by stretching or shrinking
Patent
1990-07-31
1991-08-20
Sipos, John
Package making
Apparatus for contraction of cover by stretching or shrinking
53587, 533891, B65B 1104
Patent
active
050403583
ABSTRACT:
In a vertical and helical banding machine having a rotary table, a carriage mounted on a mast secured to a stand is driven between upper and lower positions and has a delivery roller rotatable about a vertically stationary axis for passing the banding film to helically wrap or band the load. The carriage includes a support for changing the direction of banding film from a horizontal to a veritcal position as the film is delivered to the delivery roll. A prestretching mechanism is provided for prestretching the film prior to delivery to the carriage. The mechanism includes a horizontal vertically movable bearing roller carrying the film reel and a horizontal support roller parallel to the bearing roller and positioned beneath the film reel and supporting same whereby the lower horizontal generatrix between the reel of film and the support roller forms a constant reference to control the speed of film being unwound from the reel and in conjunction therewith acts as a prestretching mechanism.
REFERENCES:
patent: 2716315 (1955-08-01), Jacoby
patent: 4050221 (1977-09-01), Lancaster, III et al.
patent: 4235062 (1980-11-01), Lancaster
patent: 4255918 (1981-03-01), Lancaster et al.
patent: 4271657 (1981-06-01), Lancaster, III et al.
patent: 4302920 (1984-06-01), Lancaster et al.
patent: 4336679 (1982-06-01), Lancaster et al.
patent: 4387548 (1983-06-01), Lancaster et al.
patent: 4387552 (1983-06-01), Lancaster et al.
patent: 4418510 (1983-12-01), Lancaster, III et al.
patent: 4590746 (1986-05-01), Humphrey
patent: 4757952 (1988-07-01), Balzer
Copy of French Search Report cited in Prosecution of the Priority Application.
Newtec International (Societe Anonyme)
Sipos John
LandOfFree
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