| D | SK | SECTION D — TEXTILES; PAPER |
| D02 | KL | YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING |
| D02G | UKL | CRIMPING OR CURLING FIBRES, FILAMENTS, YARNS, OR THREADS; YARNS OR THREADS |
| D02G 1/00 | HGR | Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics (yarns per seD02G 3/00; during formation of artificial filaments, threads, or the like D01D 5/22; general aspects of chemical treatment D06M) |
| D02G 1/02 | UGR1 | | . | by twisting, fixing the twist and backtwisting, i.e . by imparting false twist |
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| D02G 1/04 | UGR2 | | . . | Devices for imparting false twist |
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| D02G 1/06 | UGR3 | |
| D02G 1/08 | UGR3 | |
| D02G 1/10 | UGR1 | | . | using knife edges, e.g. heated knife edges, for edge crimping |
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| D02G 1/12 | UGR1 | |
| D02G 1/14 | UGR1 | | . | using grooved rollers or gear-wheel-type members |
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| D02G 1/16 | UGR1 | | . | using jets or streams of turbulent gases, e.g. air, steam |
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| D02G 1/18 | UGR1 | | . | by combining fibres, filaments, or yarns, having different shrinkage characteristics |
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| D02G 1/20 | UGR1 | | . | Combinations of two or more of the above-mentioned operations or devices; After-treatments for fixing crimp or curl |
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| D02G 3/00 | HGR | Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for (for producing crimped or curled yarns D02G 1/00) |
| D02G 3/02 | UGR1 | | . | Yarns or threads characterised by the material or by the materials from which they are made |
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| D02G 3/04 | UGR2 | | . . | Blended or other yarns or threads containing components made from different materials |
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| D02G 3/06 | UGR2 | | . . | Threads formed from strip material other than paper |
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| D02G 3/08 | UGR2 | | . . | Paper yarns or threads |
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| D02G 3/10 | UGR2 | | . . | Yarns or threads formed from collagenous materials, e.g. catgut |
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| D02G 3/12 | UGR2 | | . . | Threads containing metallic filaments or strips |
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| D02G 3/14 | UGR2 | |
| D02G 3/16 | UGR2 | | . . | Yarns or threads made from mineral substances |
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| D02G 3/18 | UGR3 | | . . . | from glass or the like |
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| D02G 3/20 | UGR3 | |
| D02G 3/22 | UGR1 | | . | Yarns or threads characterised by constructional features |
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| D02G 3/24 | UGR2 | | . . | Bulked yarns or threads, e.g. formed from staple fibre components with different relaxation characteristics |
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| D02G 3/26 | UGR2 | | . . | with characteristics dependent on the amount or direction of twist |
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| D02G 3/28 | UGR3 | | . . . | Doubled, plied, or cabled threads |
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| D02G 3/30 | UGR3 | | . . . | Crêped or other highly-twisted yarns or threads |
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| D02G 3/32 | UGR2 | | . . | Elastic yarns or threads |
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| D02G 3/34 | UGR2 | | . . | Yarns or threads having slubs, knops, spirals, loops, tufts, or other irregular or decorative effects, i.e. effect yarns |
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| D02G 3/36 | UGR2 | | . . | Cored or coated yarns or threads (elastic yarns or threads D02G 3/32) |
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| D02G 3/38 | UGR2 | | . . | Threads in which fibres, filaments, or yarns are wound with other yarns or filaments (covering endless core threads with fibres by using open-end spinning techniques D01H 4/00) |
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| D02G 3/40 | UGR2 | | . . | Yarns in which fibres are united by adhesives; Impregnated yarns or threads |
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| D02G 3/42 | UGR2 | |
| D02G 3/44 | UGR1 | | . | Yarns or threads characterised by the purpose for which they are designed |
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| D02G 3/46 | UGR2 | | . . | Sewing-cottons or the like |
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| D02G 3/48 | UGR2 | |