(0)B29B:0/1:
IPC6
SECTION B - PERFORMING OPERATIONS; TRANSPORTING
PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED;...
B29B
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B 29

 WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL (processing doughs A 21 C; working chocolate A 23 G; casting of metals B 22; working cement, clay B 28; chemical aspects, see section C, particularly C 08; working glass C 03 B ; candle making C 11 C 5/02; making soap C 11 D 13/00; manufacture of artificial filaments, threads, fibres, bristles or ribbons D 01 D, D 01 F; manufacture of articles from cellulosic fibrous suspensions or from papier-mβche D 21 J)
 

Notes

(1)

 This class does not cover the working of plastics sheet material in a manner analogous to the working of paper, which is covered by class B 31. [4]

(2)

 In this class, the following term is used with the meaning indicated:
 

-

 "plastics" means macromolecular compounds or compositions based on such compounds.

(3)

 In this class, the following rules apply:
 

(a)

 The working of plastics is, as far as possible, classified primarily according to the particular shaping technique used, e.g. in subclass B 29 C. [4]
 

(b)

 A product is not classified in this class unless it results from a technique which is covered by this class.
 

(c)

 Classification according to production of particular articles in subclass B 29 D is restricted to:
 

(i)

 aspects which are characteristic for the production of a particular article, and not classifiable in subclass B 29 B or B 29 C;
 

(ii)

 combined operations for making the particular article which are not fully classifiable in subclass B 29 C. [4]

(4)

 The codes of subclass B 29 K are only for use as indexing codes associated with subclasses B 29 B , B 29 C, or B 29 D so as to provide information concerning moulding materials or materials for reinforcements, fillers or preformed parts, e.g. inserts. [4]

(5)

 The codes of subclass B 29 L are only for use as indexing codes associated with subclass B 29 C, so as to provide information concerning the articles produced by the techniques classified in subclass B 29 C. [4]

B 29 B

 PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS [4]
 

Note
 

In this subclass, it is desirable to add the indexing codes of subclass B 29 K. The indexing codes should be unlinked. [4]

 

 

 
 

 7
/ 00 Mixing; Kneading (in general B 01 F; combined with calendering B 29 C 43/24, with injection B 29 C 45/46, with extrusion B 29 C 47/36) [4]

7
/ 02 • non-continuous, with mechanical mixing or kneading devices, i.e. batch type [4]  

7
/ 04 • • with non-movable mixing or kneading devices [4]  

7
/ 06 • • with movable mixing or kneading devices [4]  

7
/ 08 • • • shaking, oscillating or vibrating [4]  

7
/ 10 • • • rotary [4]  

7
/ 12 • • • • with single shaft [4]  

7
/ 14 • • • • • with screw or helix [4]  

7
/ 16 • • • • • with paddles or arms [4]  

7
/ 18 • • • • with more than one shaft [4]  

7
/ 20 • • • • • with intermeshing devices, e.g. screws [4]  

7
/ 22 • • Component parts, details or accessories; Auxiliary operations [4]  

7
/ 24 • • • for feeding [4]  

7
/ 26 • • • for discharging, e.g. doors [4]  

7
/ 28 • • • for measuring, controlling or regulating, e.g. viscosity control [4]  

7
/ 30 • continuous, with mechanical mixing or kneading devices [4]  

7
/ 32 • • with non-movable mixing or kneading devices [4]  

7
/ 34 • • with movable mixing or kneading devices [4]  

7
/ 36 • • • shaking, oscillating or vibrating [4]  

7
/ 38 • • • rotary (B 29 B 7/52 takes precedence) [4]  

7
/ 40 • • • • with single shaft [4]  

7
/ 42 • • • • • with screw or helix [4]  

7
/ 44 • • • • • with paddles or arms [4]  

7
/ 46 • • • • with more than one shaft [4]  

7
/ 48 • • • • • with intermeshing devices, e.g. screws [4]  

7
/ 50 • • • • with rotary casing [4]  

7
/ 52 • • • with rollers or the like, e.g. calenders [4]  

7
/ 54 • • • • with a single roller co-operating with a stationary member [4]  

7
/ 56 • • • • with co-operating rollers [4]  

7
/ 58 • • Component parts, details or accessories; Auxiliary operations [4]  

7
/ 60 • • • for feeding, e.g. end guides for the incoming material [4]  

7
/ 62 • • • Rollers, e.g. with grooves [4]  

7
/ 64 • • • Stripping the material from the rollers [4]  

7
/ 66 • • • Recycling the material [4]  

7
/ 68 • • • Positioning of rollers [4]  

7
/ 70 • • • Conditioning of rollers, e.g. cleaning [4]  

7
/ 72 • • • Measuring, controlling or regulating [4]  

7
/ 74 • using other mixers or combinations of dissimilar mixers [4]  

7
/ 76 • • with stream impingment mixing head [4]  

7
/ 78 • • by gravity, e.g. falling particle mixers [4]  

7
/ 80 • Component parts, details or accessories; Auxiliary operations (B 29 B 7/22, B 29 B 7/58 take precedence) [4]  

7
/ 82 • • Heating or cooling [4]  

7
/ 84 • • Venting or degassing [4]  

7
/ 86 • • for working at sub- or superatmospheric pressure [4]  

7
/ 88 • • Adding charges [4]  

7
/ 90 • • • Fillers or reinforcements [4]  

7
/ 92 • • • • Wood chips or wood fibres [4]  

7
/ 94 • • • Liquid charges [4]  
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