DIFF Subclass Not Allocatable
B31C MAKING WOUND ARTICLES, e.g. WOUND TUBES, OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
Introduced: September 1968
Description
B31C covers the manufacture of tubular and spiral wound articles produced from paper, cardboard, or paper-like materials through winding and lamination processes. This subclass includes paper tubes, cores, spools, and similar hollow cylindrical products formed by winding continuous sheets of material around a mandrel or former. The classification encompasses machinery, methods, and apparatus for controlling winding tension, adhesive application, cutting, and finishing of wound articles across various industrial applications such as packaging, textiles, and paper handling.
IPC and CPC are identically structured here. All 7 subcodes exist in both systems.
Child Classifications
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- B31C 1/00 Making tubes or pipes by feeding at right angles to the winding mandrel centre line IPC+CPC Available in IPC and CPC
- B31C 3/00 Making tubes or pipes by feeding obliquely to the winding mandrel centre line IPC+CPC Available in IPC and CPC
- B31C 9/00 Simultaneous forming of cylindrical and conical shapes by winding separate webs, e.g. forming bottles IPC+CPC Available in IPC and CPC
- B31C 99/00 Subject matter not provided for in other groups of this subclass since 2009 IPC+CPC Available in IPC and CPC