Apparatus for forming flat-bottomed plastic bags

Details Apparatus for forming flat-bottomed plastic bags Apparatus for forming flat-bottomed plastic bags

1997-12-12

2000-05-02

Kim, Eugene L.

Manufacturing container or tube from paper; or other manufacturi

Container making

Pliable container

493228, 493936, 493197, 493 24, B31B 190

Patent

active

060566817

ABSTRACT:
A method and apparatus for forming flat-bottomed plastic bags uses a flattened plastic tubing as a raw material. The tubing is unwound from a roll, and is passed around a gusset plate assembly, where guide members on opposite sides of the gusset plate assembly guide outside edges of the tubing inwardly between a pair of gusset plates to form gussets in the tubing. In a preferred embodiment, microperforations are formed in the bag material to provide ventilation to the finished bags.

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patent: 5149315 (1992-09-01), Muhs
patent: 5853360 (1998-12-01), Jeffrey et al.

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