DIFF Subgroup
B31B 70/64 by applying heat or pressure (to unite areas where adhesives are applied B31B70/62)
Introduced: January 2017
Title
Titles differ between systems:
IPC: by applying heat or pressure
CPC: by applying heat or pressure (to unite areas where adhesives are applied B31B70/62)
Full Title
Full titles differ between systems:
IPC:
Making flexible containers, e.g. envelopes or bags > Uniting opposed surfaces or edges; Taping > by applying heat or pressure
CPC:
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)
CPC subdivides this area 7x more granularly than IPC with 6 additional codes.
6 codes are CPC-only extensions.
IPC defines codes here since 2017.
Child Classifications
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