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PCE
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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

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