| B | SK | PERFORMING OPERATIONS; TRANSPORTING |
| B31 | KL | MAKING PAPER ARTICLES; WORKING PAPER (making layered products not composed wholly of paper or cardboard B32B; handling thin material, e.g. sheets, webs, B65H) |
| B31D | UKL | 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) |
| B31D 1/00 | HGR | Multiple-step processes for making flat articles |
| B31D 1/02 | UGR1 | | . | the articles being labels or tags (means or processes for attaching threads D05) |
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| B31D 1/04 | UGR1 | | . | the articles being napkins, handkerchiefs, towels, doilies, or the like |
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| B31D 1/06 | UGR1 | | . | the articles being handles |
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| B31D 3/00 | HGR | Making articles of cellular structure, e.g. insulating board |
| B31D 3/02 | UGR1 | |
| B31D 3/04 | UGR1 | | . | cellular packaging articles, e.g. for bottles |
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| B31D 5/00 | HGR | Multiple-step processes for making three-dimensional articles (assembly of garlands A41G 1/00; making receptacles or containers B31B; making tubes B31B , B31C) |
| B31D 5/02 | UGR1 | |
| B31D 5/04 | UGR1 | | . | including folding or pleating, e.g. Chinese lanterns |
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