CPC Subclass Not Allocatable
B31C MAKING WOUND ARTICLES, e.g. WOUND TUBES, OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
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.
7 direct subcodes
Child Classifications
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- B31C 1/00 Making tubes or pipes by feeding at right angles to the winding mandrel centre line
- B31C 11/00 Machinery for winding combined with other machinery
- B31C 3/00 Making tubes or pipes by feeding obliquely to the winding mandrel centre line
- B31C 5/00 Making tubes or pipes without using mandrels
- B31C 7/00 Making conical articles by winding
- B31C 9/00 Simultaneous forming of cylindrical and conical shapes by winding separate webs, e.g. forming bottles
- B31C 99/00 Subject matter not provided for in other groups of this subclass
Top Applicants
Top 10 applicants by patent filingsfor class B31, 2013–2023, worldwide · Source: EPO PATSTAT
- GPI (GRAPHIC PACKAGING INTERNATIONAL) US 496
- P&G (PROCTER & GAMBLE COMPANY) US 403
- KIMBERLY-CLARK CORPORATION US 332
- RANPAK CORPORATION US 279
- PULPAC SE 256
- BOBST MEX CH 251
- TETRA LAVAL HOLDINGS & FINANCE CH 246
- PREGIS INNOVATIVE PACKAGING US 210
- WESTROCK SHARED SERVICES US 204
- BHS CORRUGATED MASCHINEN- UND ANLAGENBAU DE 198