(under subclass 331) Method or apparatus combined with (a) the application applying of thermal energy to the workpiece or to the flowable material; or combined with (b) allowing the vapor pressure of the flowable material to cause the material to solidify.
SEE OR SEARCH THIS CLASS, SUBCLASS:
41, for making a cigarette filter including application of heat to secure the wrapper thereto.
129+, for making a rigid container with application of adhesive and heat sealing.
133+, for making a rigid container including heat sealing.
189+, for making a pliable container including heat sealing.
274+, for making a tube with coating and heating.
341, for an operation of this class including heat sealing combined with cutting, breaking, tearing, or abrading.
