Apparatus for making flat packaging bags from a flexible sheet o

Manufacturing container or tube from paper; or other manufacturi – Container making – Pliable container

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Details

493194, B31B 2364

Patent

active

053563638

ABSTRACT:
An apparatus for making flat packaging bags from a flexible web of indeterminate length includes a machine frame; a sled mounted on the machine frame for travel parallel to the direction of web advance; a first drive for reciprocating the sled parallel to the direction of advance; a mandrel mounted on the sled; a tubular folding body fixedly mounted on the machine frame and coaxially surrounding the mandrel for bending the web about the mandrel to form a web hose; a first sealing shoe mounted on the sled; a second drive for pressing the first sealing shoe against an outer face of the mandrel for providing a longitudinal sealing seam on the web hose situated between the mandrel and the first sealing shoe; a second sealing shoe mounted on the machine frame for displacements perpendicularly to the direction of web advance; a third drive for actuating the second sealing shoe for providing a transverse sealing seam on the web hose; and a cutter for severing a length of web hose from the web.

REFERENCES:
patent: 2237119 (1941-04-01), Smith
patent: 2246043 (1941-06-01), Heinmets
patent: 2923115 (1960-02-01), Frank
patent: 4079662 (1978-03-01), Puccetti
patent: 4277302 (1981-07-01), Reid
patent: 4552613 (1985-11-01), Auer
patent: 4974396 (1990-12-01), Gaukler
patent: 4986054 (1991-01-01), McMahon

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