CPC Main Group
B31B 70/00 Making flexible containers, e.g. envelopes or bags
13 direct subcodes
Child Classifications
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- B31B 70/02 Feeding or positioning sheets, blanks or webs
- B31B 70/14 Cutting, e.g. perforating, punching, slitting or trimming (cutting window openings B31B70/83)
- B31B 70/26 Folding sheets, blanks or webs
- B31B 70/60 Uniting opposed surfaces or edges; Taping
- B31B 70/74 Auxiliary operations
- B31B 70/99 using hand tools