Apparatus for pulling open tube sections to form base squares in

Details Apparatus for pulling open tube sections to form base squares in Apparatus for pulling open tube sections to form base squares in

1980-07-24

1983-02-01

Coan, James F.

Manufacturing container or tube from paper; or other manufacturi

Container making

Pliable container

493259, B31B 152, B31B 180

Patent

active

043713670

ABSTRACT:
An apparatus for opening and folding the end of a flattened tubular sheet to define the rectangular base of a bag or sack to be made from the sheet comprises a table having a slot through which the flattened sheet projects, the projection being formed into a bag base by suckers locating the projection in a pre-opened condition and grippers which engage opposed margins of the projection, one of the grippers being fixed and the other being secured to a pivotable arm.

REFERENCES:
patent: 1165765 (1915-12-01), Duvall
patent: 2224656 (1940-12-01), Robinson
patent: 3250187 (1966-05-01), Kasting
patent: 3547010 (1970-12-01), Gennerich et al.

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