(under subclass 111) Apparatus in which the contents material is subjected to the action of either a partial vacuum or a gas which does not react with the contents.
(1) Note. The vacuum or inert gas atmosphere may or may not be continued within the package after the closing thereof.
SEE OR SEARCH THIS CLASS, SUBCLASS:
79+, for apparatus for gas filling or evacuating a receptacle and then closing the receptacle.
403+, for methods of gas filling and/or evacuating receptacles and closing the receptacle.
432+, for methods of packaging including treating the contents by subjecting it to a vacuum.
527, for apparatus which utilize suction to compact material.
SEE OR SEARCH CLASS 141, Fluent Material Handling, With Receiver or Receiver Coacting Means,
37+, for closed systems for gas filling or evacuation of a receiver or modification of the gaseous conditions in a receiver being filled with fluent material; subclass 70 for fluid treatment of contents not in a closed system, i.e., jetting.
