National Institute of Industrial Property, Brazil (BR)
Project: D271
Subject: SHAPING OR JOINING OF PLASTICS OR
SUBSTANCES IN A PLASTIC STATE, IN GENERAL
IPC: B29C
Acction: Rapporteur Proposal - Definitions
Date: 10/02/2012
Title – B29C
Shaping or joining of plastics; shaping of substances in a plastic state,
in general; after- treatment of the shaped products, e.g. repairing.
Definition statement
This subclass covers:
Processes and apparatus for shaping or joining substances in a plastic state. This
subclass is subdivided into two guidance heading:
1. 'Component parts, details or accessories; Auxiliary operations' which covers:
 Handling;
 Moulds or cores;
 Heating, cooling or curing;
2. 'Particular shaping techniques and apparatus' which covers:
 Types of moulding and shaping;
 Applying preformed layers, lining or sheathings;
 Joining of preformed parts;
 Repairing and after-treatment of plastic or plastic-like articles.
Relationship between large subject matter areas
As it is for the whole B29 class, this subclass does not cover the working of plastics sheet
material in a manner analogous to the working of paper, which is covered by class B31.
B29C covers the production of plastic or plastic-like articles. This subclass is often
connected with the following areas:
 B29B, related to preparation or pretreatment of the material to be shaped,
making granules or preforms, beyond recovery of plastics or other constituents
of waste material containing plastics;
 B29D, related to processes and apparatus for the production of particular
articles from plastic or plastic-like substances, characterised by their global
structure, e.g. flat, hollow, or tubular articles, by their structural features, e.g.
provided with screw threads, corrugations, grooves or projections, or by their
purpose, e.g. buttons, optical elements, tyres or footwear;
 B32B, related to layered products (products built-up of strata of flat or nonflat, e.g. cellular or honeycomb form);
 C08J, related to chemical aspects or features for treating, compounding,
working-up or recovery of macromolecular substances not covered by
subclasses C08B, C08C, C08F, C08G or C08H;
 C08K, related to the use of inorganic or non-macromolecular organic
substances, or mixture thereof, as additives in composition of macromolecular
compounds;
 C08L, related to composition of organic macromolecular compounds, such as
polysaccharides and derivates, rubbers and derivates, macromolecular
compounds obtained by reactions involving or not carbon-to-carbon unsaturated
bonds, natural macromolecular compounds and derivatives.
References relevant to classification in this subclass
This subclass does not cover:
Curing devices for plastics prostheses
A61C 13/14
Making performs
B29B 11/00
Conditioning or physical treatment of the material to be shaped
B29B 13/00
Retreading of pneumatic tyres
B29D 30/54
Methods or apparatus for laminating
B32B 37/00
Ancillary operations in connection with laminating processes
B32B 38/00
Layout of apparatus or plants
B32B 39/00
Arrangements for controlling or monitoring lamination processes
B32B 41/00
Devices for covering leaks in pipes or hoses
F16L 55/16
Examples of places where the subject matter of this subclass is covered when specially
adapted, used for a particular purpose, or incorporated in a large system:
Working cement, clay
B28
Working glass
C03B
Candle making
C11C 5/02
Making soap
C11D 13/00
Manufacture of artificial filaments, threads, fibres, bristles or ribbons
Places in relation to which this subclass is residual:
D01D, D01F
None.
Informative references
Attention is drawn to the following places, which may be of interest for search:
Foundry moulding
B22C
Machine tools
B23
Grinding or polishing
B24
Machines, devices or processes for grinding or polishing of optical elements B24B
Cutting work and details of apparatus related with
B26D
Means of perforating, punching, cutting-out, stamping-out and severing
B26F
Presses in general
B30B
Extrusion presses
B30B 11/22
Feeding material to presses
B30B 15/30
Making of boxes, cartons, envelopes, or bags
B31B
Making wound tubes
B31C
Devices or methods of sealing or securing package folds or closures
B65B 51/00
transport or storage devices
B65G
Preparation, chemical working-up
macromolecular compounds
and
compositions
of
Processes of treating or compounding macromolecular substances
organic C08
C08J 3/00
Manufacture of articles or shaped materials containing macromolecular C08J 5/00
substances
Chemical treatment or coating of shaped articles made of macromolecular C08J 7/00
substances
Adhesive processes in general
C09J 5/00
Materials for sealing or packing joints or covers
C09K 3/10
Devices for fastening or securing constructional elements or machine parts F16B
together
Measuring volume, volume flow, mass flow, or liquid level
G01F
Splicing of light guides
G02B 6/255
Basic electric elements such as spark gaps; overvoltage arresters using H01T
spark gaps; sparking plugs; corona devices
Plasma technique
H05H
Special rules of classification within this subclass
In this subclass the following rules must be applied:
1) The working of plastics is, as far as possible, classified primarily according to the
particular shaping technique used in this subclass;
2) Combined operations for making a particular article which are not fully classifiable in
this subclass must be classified in subclass B29D;
3) Products per se are not classified in this subclass. However, if a product is
characterised by the way it is produced and not by its structure or composition, the
production method should be classified in this subclass;
4) In this subclass:
a) repairing of articles made from plastics or substances in a plastic state, e.g. of
articles shaped or produced by using techniques covered by this subclass or
subclass B29D, is classified in group B29C 73/00;
b) component parts, details, accessories or auxiliary operations which are
applicable to more than one moulding technique are classified in groups B29C
31/00 – B29C 37/00;
c) component parts, details, accessories or auxiliary operations which are only
applicable or only of use for one specific shaping technique are classified only in
the relevant subgroups of groups B29C 39/00 – B29C 71/00.
5) In this subclass, it is desirable to add the indexing codes of subclass B29K and/or
B29L.