| IPC 7 English version |
| Class B31 |
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| SECTION B – PERFORMING OPERATIONS; TRANSPORTING |
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| B 31 | MAKING PAPER ARTICLES; WORKING PAPER (making layered products not composed wholly of paper or cardboard B32B; handling thin material, e.g. sheets, webs, B65H) |
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| Notes |
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| (1) | This class covers subject matter restricted to adaptations or associations of handling sheets, webs, or blanks peculiar to paper-working, e.g. bag or box making, machinery. |
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| (2) | This class does not cover: |
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| – | making articles directly from paper pulp, which is covered by D21J; |
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| – | handling sheets, webs, or blanks of wider applicability, irrespective of whether described or claimed only for paper-working machinery, which is regarded as being of a more comprehensive nature and is covered by B65H. |
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| (3) | In this class, the following term is used with the meaning indicated: |
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| – | "paper" covers material worked in a manner analogous to paper, e.g. plastics sheet materials, laminated materials or metal foils. |
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| B 31 B | MAKING BOXES, CARTONS, ENVELOPES, OR BAGS (incising, scoring, in general B26D 3/08; combined making and filling B65B) |
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| B 31 C | MAKING WOUND ARTICLES, e.g. WOUND TUBES (characteristics relating to the working of plastics B29; shaping of plastics or substances in a plastic state B29C) |
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| B 31 D | MAKING OTHER PAPER ARTICLES (manufacture by dry processes of articles made from particles or fibres consisting of wood or other lignocellulosic or like organic material B27N; making layered products not composed wholly of paper or cardboard B32B; making cardboard or paper D21F, D21H, making articles from wood pulp D21J) |
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| B 31 F | MECHANICAL WORKING OR DEFORMATION OF PAPER OR CARDBOARD (cutting, trimming, in general B26; incising, scoring, in general B26D 3/08; making layered products not composed wholly of paper or cardboard B32B; multi-ply material of paper or cardboard, its manufacture D21H) |
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