Method and apparatus for wrapping a product, particularly wrappi

Details Method and apparatus for wrapping a product, particularly wrappi Method and apparatus for wrapping a product, particularly wrappi

1989-01-27

1991-02-12

Spruill, Robert L.

Package making

Methods

Applying a partial cover

53 74, 53389, 53463, 53466, 53553, 53586, B65B 1304, B65B 2708, B65B 4116, B65B 5712

Patent

active

049913760

ABSTRACT:
A method and an apparatus for wrapping a product, particularly a bundle of newspapers or magazines, especially an extra thick bundle or an extra thin bundle comprising a few or a single newspaper or magazine. The product is carried on a conveyor system through a plane towards a curtain of film formed by an upper and a lower sheet of film. The curtain thus accompanies the product and is auto-sealed behind the product, after which the sheets of film are separated in the middle of the sealing region, the curtain of film being re-established and the product being provided with a wrapper. The deflection roller or the like which defines the upper limit of the sheet of film is carried by drive device such as cylinders which are arranged to displace the deflection roller in such a way that its upper portion will be supplied quickly and substantially without tensile force at the start of a wrapping operation if the height of the product is slight, or at the end of the wrapping operation if the height of the product is particularly great.

REFERENCES:
patent: 3465489 (1969-09-01), Monaghan
patent: 3559367 (1971-02-01), Misik
patent: 3990215 (1976-11-01), Elsner et al.
patent: 4024692 (1977-05-01), Young
patent: 4313288 (1982-02-01), Tassi
patent: 4413463 (1983-11-01), Lancaster
patent: 4509314 (1985-04-01), Bozza
patent: 4782648 (1988-11-01), Van Ottele
patent: 4831809 (1989-05-01), Ballestrazzi

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