B
SECTION B — PERFORMING OPERATIONS; TRANSPORTING
 B01 - 
B07
Subsection index
LIQUID/LIQUID, LIQUID/GAS OR GAS/GAS SEPARATION
Method
General operationsB01D
by centrifugal force, using centrifuges or free-vortex apparatusB01D
using magnetic or electrostatic effectB03C
Apparatus
General operationsB01D
by centrifugal force, using centrifuges or free-vortex apparatusB04B, B04C
using magnetic or electrostatic effectB03C
SOLID/LIQUID OR SOLID/GAS SEPARATION
Method
General operationsB01D
by centrifugal forceB01D
using centrifuges or free-vortex apparatusB01D
using magnetic or electrostatic effectB03C
Apparatus
General operationsB01D
by centrifugal forceB01D
using centrifuges or free-vortex apparatusB04B, B04C
using magnetic or electrostatic effectB03C
SOLID/SOLID SEPARATION
Method
Dry methods
material in bulkB07B
Individual sortingB07C
Screening, sifting, pneumatic sortingB07B
using pneumatic tables or jigsB03B
by magnetic or electrostatic effectB03C
by centrifugal forceB07B
using centrifuges or free-vortex apparatusB07B
Wet methods
General operationsB03B
flotation, differential sedimentationB03D
screeningB07B
Combinations Dry methods - wet methodsB03B
Apparatus
Dry methods
material in bulkB07B
Individual sortingB07C
Screening, sifting, pneumatic sortingB07B
using pneumatic tables or jigsB03B
by magnetic or electrostatic effectB03C
by centrifugal forceB07B
using centrifuges or free-vortex apparatusB04B, B04C
Wet methods
General operationsB03B
flotation, differential sedimentationB03D
screeningB07B
Combinations Dry methods - wet methodsB03B
  
SHAPING
 B31
MAKING PAPER ARTICLES; WORKING PAPER (making layered products not composed wholly of paper or cardboard B32B; handling thin material, e.g. sheets, webs, B65H)
 B31

Note(s)

  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.
  2. This class does not cover:
  3. In this class, the following term is used with the meaning indicated:
    • "paper" covers material worked in a manner analogous to paper, e.g. plastics sheet materials, laminated materials or metal foils.
 B31D
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

Note(s)

This subclass covers the making, otherwise than by winding, of articles other than boxes, cartons, envelopes, bags, and tubes from paper, other than from paper pulp.

P:20 B31D 1/00
Multiple-step processes for making flat articles
 B31D 1/02
·  the articles being labels or tags (means or processes for attaching threads D05)
 B31D 1/04
·  the articles being napkins, handkerchiefs, towels, doilies, or the like
 B31D 1/06
·  the articles being handles
P:0 B31D 3/00
Making articles of cellular structure, e.g. insulating board
 B31D 3/02
·  honeycombed structures
 B31D 3/04
·  cellular packaging articles, e.g. for bottles
P:10 B31D 5/00
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
·  including pressing
 B31D 5/04
·  including folding or pleating, e.g. Chinese lanterns
P:30 B31D 99/00
Subject matter not provided for in other groups of this subclass  [8]