D
SECTION D — TEXTILES; PAPER
  
PAPER
 D21
PAPER-MAKING; PRODUCTION OF CELLULOSE
 D21H
PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C, D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR  [5]
 D21H

Note(s)

  1. This subclass covers also pulp compositions for the preparation of fibreboard or other fibrous articles by wet processes. [5]
  2. In this subclass, the following terms are used with the meaning indicated:
    • "pulp" means a dispersion comprising paper-making fibres and optional additives, which is to be processed, and covers the term "stock"; it also means dry paper-making fibres which are to be made into paper by either wet or dry processes; [5]
    • "paper" means paper, cardboard or wet-laid non-woven fabrics.
  3. If a pulp composition or a paper, or a constituent thereof, is characterised by more than one feature provided for in this subclass, for example, by both the fibrous material and a coating or by both a colorant and a water-repelling agent, classification is made in all places providing for these features.  [8]
  4. Processes using enzymes or micro-organisms in order to:
    1. liberate, separate or purify a pre-existing compound or composition, or to
    2. treat textiles or clean solid surfaces of materials
    are further classified in subclass C12S[5]
 D21H
Subclass index
PULP OR PAPER
comprising cellulose, lignocellulose or non-cellulose fibres or web-forming material 11/00, 13/00
comprising fibres or web-forming material not characterised by their chemical constitution 15/00
Processes or apparatus for adding material 23/00
NON-FIBROUS MATERIAL ADDED TO THE PULP, PAPER-IMPREGNATING MATERIAL 17/00, 21/00
COATED PAPER; COATING MATERIAL 19/00
OTHER AFTER-TREATMENTS OF PAPER 25/00
SPECIAL PAPER 27/00
 D21H 11/00 - 
D21H 15/00

Note(s)

In groups D21H 11/00-D21H 15/00, in the absence of an indication to the contrary, classification is made in the last appropriate place. [5]

P:30 D21H 11/00
Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only  [5]
P:20 D21H 13/00
Pulp or paper, comprising synthetic cellulose or non-cellulose fibres or web-forming material (chemical features in the manufacture of artificial fibres D01F)  [5]
P:10 D21H 15/00
Pulp or paper, comprising fibres or web-forming material characterised by features other than their chemical constitution  [5]
P:60 D21H 17/00
Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution  [5]
P:0 D21H 19/00
Coated paper (coated fibreboard D21J 1/00); Coating material (recording sheets characterised by the coating used to improve ink, dye or pigment receptivity B41M 5/50)  [5]
P:50 D21H 21/00
Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper impregnating or coating material, characterised by its function, form or properties (coatings characterised by a special visual effect D21H 19/00)  [5]
 D21H 21/06
·  Paper forming aids  [5]
 D21H 21/10
·  ·  Retention agents or drainage improvers  [5]
 D21H 21/14
·  characterised by function or properties in or on the paper (D21H 19/00, D21H 27/02 take precedence)  [5]
 D21H 21/22
·  ·  Agents rendering paper porous, absorbent or bulky  [5]
 D21H 21/34
·  ·  Ignifugeants  [5]
 D21H 21/40
·  ·  Agents facilitating proof of genuineness or preventing fraudulent alteration, e.g. for security paper (watermarking B41M 3/00, D21F 1/00; security printing B41M 3/14; securities or banknotes characterised by colour effects B44F 1/00; testing paper currency or valuable papers for genuineness G07D 7/00)  [5]
P:70 D21H 23/00
Processes or apparatus for adding material to the pulp or to the paper (applying liquids or other fluent material to surfaces, in general B05; processes for making continuous lengths of paper D21F 11/00)  [5]
P:80 D21H 25/00
After-treatment of paper not provided for in groups D21H 17/00-D21H 23/00  [5]
P:40 D21H 27/00
Special paper not otherwise provided for, e.g. made by multi-step processes  [5]
 D21H 27/00

Note(s)

This group provides for the classification of paper with special properties or applications which are only partially or not at all provided for elsewhere in the classification. Whenever possible, however, these papers are classified according to the criteria used in the other groups of this subclass. [5]

 D21H 27/02
·  Patterned paper (patterned coatings D21H 19/00; embossing B31F 1/00; prepared on the paper-making machines D21F 11/00)  [5]
 D21H 27/06
·  Vegetable or imitation parchment; Glassine paper  [5]
 D21H 27/08
·  Filter paper (self-supporting filtering material B01D 39/14; making on paper-making machines D21F 11/00)  [5]
 D21H 27/10
·  Packing paper (packaging materials of special type or form B65D 65/38)  [5]
 D21H 27/12
·  Electrically-insulating paper  [5]
 D21H 27/14
·  Paper having stable form or dimension; Curl-resistant paper (anticoil photographic support G03C 1/81)  [5]
 D21H 27/16
·  Pure paper, i.e. paper lacking or having low content of contaminants (after-treatment of cellulose pulp D21C 9/00)  [5]
 D21H 27/18
·  Paper- or board-based structures for surface covering (printed wallpapers B41M 3/00)  [5]
 D21H 27/30
·  Multi-ply (for surface covering D21H 27/18; making on paper-making machines D21F 9/00, D21F 11/00)  [5]
 D21H 27/30

Note(s)

Layered products classified in this group are also classified in subclass B32B.  [5]