Method and apparatus for manufacturing a sack bottom

Details Method and apparatus for manufacturing a sack bottom Method and apparatus for manufacturing a sack bottom

1994-08-03

1996-10-29

Lavinder, Jack W.

Manufacturing container or tube from paper; or other manufacturi

Container making

Pliable container

493248, 493260, 493264, B31B 2100

Patent

active

055691455

ABSTRACT:
The invention concerns a method and an apparatus for manufacturing a bag or sack bottom from tubular sections of paper or plastic web. Tubular sections of web material are fed into a feeding plane where they are subsequently sealed along selected seams by a sealing means. The sections are then inverted and fed in parallel to a scoring, gluing and folding section. The tubular section is then inverted again and passed to a pressing section. The tubular sections are stacked on top of each other in a partially overlapping manner as they are passed through the pressing section. After pressing, the tubular sections are passed to a separating station for again separating them before being passed to a packaging station. The invention concerns, moreover, an apparatus for operating the above mentioned method.

REFERENCES:
patent: 2851934 (1958-09-01), Heywood
patent: 3077821 (1963-02-01), Sauerman
patent: 3664238 (1972-05-01), Baxter
patent: 3712185 (1973-01-01), Falasconi
patent: 3868894 (1975-03-01), Watson
patent: 3990354 (1976-11-01), Ward

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