Patent · US Expired

Method and apparatus for filling and sealing plastic bag fluid containers

US4360996A · kind A · utility

30Cited by
1References
8Claims
0Family size

Inventor

Key dates

Filing dateAug 13, 1980
Grant dateNov 30, 1982
Priority date—
Expiry dateAug 13, 2000

Classification

  • Technology area (CPC B)Performing Operations; Transporting
  • CPC primaryB65B39/04
  • WIPO fieldHandling
  • WIPO sectorMechanical engineering

Abstract

Flexible heat-sealable plastic bags to be filled with a fluid or loose particulate material without exposure to the atmosphere are connected to the elliptical nozzle of the filling machine by use of overlapping ellipses. A filling hole, either elliptical or circular, cut in a corner from another otherwise sealed bag will readily slip over the larger elliptical nozzle. The bag is then tightly clamped by a movable member pressing against the rear surface of the elliptical nozzle of the filling machine while the bag is filled with its material through the nozzle. The bag is subsequently heat-sealed around the hole with a heated ring, and a suction stem is inserted into the sealed-off filling hole to withdraw any residual fluid.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.