B31B2237/00 - CPC Classification Index

ClassID:

55157 ⎘

B31B2237/00 - CPC Classification

Classification description:

Sub-classes:

B31B2237/05 » the bags having multilayered walls, e.g. lined or laminated 18
B31B2237/10 » the bags having no structural provision at the base for thickness of content, e.g. flat bags 60
B31B2237/20 » the bags having structural provision at the base for thickness of content 42
B31B2237/25 » the bags being of pointed or tapered shape 1
B31B2237/40 » involving folding webs longitudinally 10
B31B2237/50 » involving joining superimposed webs, e.g. with separate bottom webs 38
B31B2237/60 » starting from tubular webs 15

Recent Application in this class:

20170095989

SHOPPING BAG CLOSING SYSTEM

20170057722

Packing bag and manufacturing method for the same

20140305587

Back seam welder and method of operation