CPC Subgroup
B31B 70/64 by applying heat or pressure (to unite areas where adhesives are applied B31B70/62)
Full Title
Making flexible containers, e.g. envelopes or bags > Uniting opposed surfaces or edges; Taping > by applying heat or pressure (to unite areas where adhesives are applied B31B70/62)
7 direct subcodes
Child Classifications
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- B31B 70/66 by high-frequency electric heating