Fluent material handling – with receiver or receiver coacting mea – Processes – Gas or variation of gaseous condition in receiver
Patent
1979-09-14
1981-04-21
Schmidt, Frederick R.
Fluent material handling, with receiver or receiver coacting mea
Processes
Gas or variation of gaseous condition in receiver
34 21, 34104, 53434, 53512, 141 10, 141 91, B65B 3106
Patent
active
042627087
ABSTRACT:
A method and apparatus are disclosed for treating flexible pouch-like containers prior to heat sealing of the containers. The method comprises simultaneously injecting superheated steam into a filled container to evacuate air from the container and directing pressurized steam at the inside edge of the container which is to be heat sealed to remove contaminants from this region. Optionally, the method of the present invention may also include a simultaneous directing of steam under pressure to the outside edge of the container in the heat sealing region to enhance the cleaning operation. The apparatus for accomplishing this result comprises a nozzle having a first chamber through which steam may be injected into the container and a second chamber having a plurality of openings through which steam under pressure may be directed against the inside walls of the container from a line supplying the pressurized steam. Optionally, the nozzle may include a third chamber in fluid-flow connection with the pressurized steam line having a plurality of openings therein for directing pressurized steam at the outside edge of the container.
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de Echeandia Rafael A.
Hutcheson James L.
Reynolds Metals Company
Schmidt Frederick R.
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