Method and apparatus for continuous package making

Details Method and apparatus for continuous package making Method and apparatus for continuous package making

1990-05-24

1991-10-01

Sipos, John

Package making

Methods

With contents treating

53450, 53443, 53511, 53542, 53550, B65B 906, B65B 3100

Patent

active

050521667

ABSTRACT:
A method of continuously making packages from groups of stacked items includes the steps of advancing consecutive groups of flat, edgewise standing, stacked items on a conveyor while supporting each item group by holders engaging each article group; during the advancing step, wrapping a wrapper sheet about an item group by a wrapper folding device, whereby the wrapper sheet supports and holds together the items in consecutive item groups; removing the holders from a just-wrapped article group; drawing the wrapper sheet, together with an item group wrapped in the wrapper sheet for conveying the item groups after the holders are removed therefrom; and withdrawing air from the wrapper sheet at a suction location where at least a partial wrapping has been completed, for generating a vacuum inside the wrapper sheet for causing the wrapper sheet to be pressed against edges of items in wrapped item groups downstream of the suction location.

REFERENCES:
patent: 2546721 (1951-03-01), Campbell
patent: 2919990 (1960-01-01), Podlesak et al.
patent: 3274746 (1966-09-01), James et al.
patent: 3402524 (1968-09-01), Griner
patent: 3995407 (1976-12-01), Segale et al.
patent: 4170863 (1979-10-01), Schwanz
patent: 4272944 (1981-06-01), Suga
patent: 4642969 (1987-02-01), Johnson

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