(under subclass 428) Methods for subjecting the contents material to a treatment which either raises or lowers its temperature.
(1) Note. Included here are methods which effect a subatmospheric pressure on the contents by subjecting contents and receptacle to temperature variations.
SEE OR SEARCH THIS CLASS, SUBCLASS:
127, for corresponding apparatus.
SEE OR SEARCH CLASS
62, Refrigeration,
60, for methods involving specific refrigerating steps combined with packaging.
