Method and apparatus for forming a plastic enclosure for fluids

Details Method and apparatus for forming a plastic enclosure for fluids Method and apparatus for forming a plastic enclosure for fluids

1981-01-09

1985-10-22

Culver, Horace M.

Package making

Methods

Forming or partial forming a receptacle and subsequent filling

604262, 604410, B65B 4704

Patent

active

045480230

ABSTRACT:
An apparatus and a method for forming a compartmentalized flexible plastic enclosure with selectively communicable compartments utilizing a pair of plates and at least one thin plastic sheet sandwiched between the plates. One plate has a surface which is conventionally plane facing the sheet and the other plate has a surface which includes a network of ridges facing the sheet and forming a sealing edge by pressure contact. The ridges defining at least the interior compartment of the bag to be formed with gaps in the ridges for defining communication channels between the compartments and valves disposed to close the gap in one position and to open the gap in the other position.

REFERENCES:
patent: 2524687 (1950-10-01), Uhlig
patent: 2691259 (1954-10-01), Weckesser
patent: 2876602 (1959-03-01), Ditlea
patent: 3251915 (1966-05-01), Pechthold
patent: 3257072 (1966-06-01), Reynolds
patent: 4146172 (1979-03-01), Cullis et al.

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