B31B MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER (making wound articles, e.g. wound tubes, B31C; combined making and filling B65B)
Description
B31B covers manufacturing processes and machinery for producing containers, boxes, tubes, and similar hollow articles from paper, cardboard, and paper-like materials. This classification encompasses folding, gluing, forming, and assembly techniques used to create rigid or semi-rigid packaging structures, including corrugated boxes, folding cartons, paper bags, and composite containers. Technologies within this scope range from manual to fully automated systems for die-cutting, scoring, creasing, and bonding paper-based materials into functional containers. Related classes such as B31D address making other paper articles (e.g., envelopes, labels), while B65B covers filling and closing containers after manufacture.
12 direct subcodes
Child Classifications
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- B31B 2100/00 Rigid or semi-rigid containers made by folding single-piece sheets, blanks or webs
- B31B 2105/00 Rigid or semi-rigid containers made by assembling separate sheets, blanks or webs
- B31B 2110/00 Shape of rigid or semi-rigid containers
- B31B 2120/00 Construction of rigid or semi-rigid containers
- B31B 2150/00 Flexible containers made from sheets or blanks, e.g. from flattened tubes
- B31B 2155/00 Flexible containers made from webs
- B31B 2160/00 Shape of flexible containers
- B31B 2170/00 Construction of flexible containers
- B31B 2241/00 Making bags or boxes intended for a specific use
- B31B 2247/00 Manual operations for making bags or boxes
- B31B 50/00 Making rigid or semi-rigid containers, e.g. boxes or cartons
- B31B 70/00 Making flexible containers, e.g. envelopes or bags
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