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Record Nr. |
UNINA9911006814503321 |
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Autore |
Atkinson Colin |
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Titolo |
False twist textured yarns : principles, processing and applications / / C. Atkinson |
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Pubbl/distr/stampa |
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Philadelphia, Pa., : Woodhead Pub. in association with Textile Institute, 2012 |
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ISBN |
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1-62870-060-2 |
0-85709-559-5 |
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Descrizione fisica |
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1 online resource (222 p.) |
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Collana |
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Woodhead publishing series in textiles, , 2042-0803 ; ; no. 129 |
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Disciplina |
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Soggetti |
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Lingua di pubblicazione |
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Formato |
Materiale a stampa |
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Livello bibliografico |
Monografia |
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Note generali |
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Description based upon print version of record. |
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Nota di bibliografia |
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Includes bibliographical references and index. |
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Nota di contenuto |
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Cover; False twist textured yarns: Principles, processes and applications; Copyright; Contents; Woodhead Publishing Series in Textiles; Preface; 1 The development of textured yarns; 1.1 Artificial silk: an early history; 1.2 The arrival of melt spinning; 1.3 The melt spinning process; 1.4 Achieving desirable fabric properties through texturing; 1.5 References; 2 Basic principles of false twist texturing; 2.1 The concept of false twist texturing; 2.2 The false twist mechanism; 2.3 Twist application methods; 2.4 References; 3 Yarn texturing machine design |
3.1 The evolution of yarn texturing machines3.2 Yarn heating and residence time in the primary texturing zone; 3.3 Vapour phase heaters; 3.4 High-temperature (HT) heaters; 3.5 Intermediate-temperature heaters; 3.6 Comparison summary of heater types; 3.7 Yarn cooling in the texturing zone; 3.8 Secondary heaters; 3.9 Machine profiles; 3.10 References; 4 Yarn twist application methods; 4.1 Friction disc twisting; 4.2 Friction disc materials; 4.3 Influence of friction disc twisting parameters on texturing performance; 4.4 Friction disc systems advances; 4.5 Belt twisting |
4 6 Improving yarn elasticity by torque generation (self twist)4.7 References; 5 Process performance issues in yarn texturing; 5.1 Friction and surface texture of yarn contact surfaces; 5.2 Process instability: |
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tension transients and speed limitations due to 'surging'; 5.3 Creel design and management; 5.4 Package build specifications; 5.5 Oil application systems; 5.6 Automatic doffi ng systems; 5.7 References; 6 Newer yarn texturing machine designs; 6.1 Factors affecting machine design; 6.2 Examples of new designs; 6.3 References; 7 Air jet intermingling in yarn texturing |
7.1 The concept of air jet intermingling7.2 The intermingling process; 7.3 Downstream process issues; 7.4 References; 8 Optimisation of process parameters in yarn texturing; 8.1 Influence of texturing parameters on yarn characteristics and performance; 8.2 Single-position to plant-scale operation; 8.3 Resolving process quality issues; 9 Draw textured yarn variants and speciality yarns; 9.1 Double-density machines; 9.2 Machine variants for draw textured speciality yarns; 9.3 References; 10 Process control and quality assurance in yarn texturing; 10.1 In-process controls |
10.2 At yarn package doff10.3 Laboratory controls; 10.4 Final product inspection and packing; 10.5 Statistical process control; 10.6 References; 11 Process costs in yarn texturing operations; 11.1 Factors affecting costs; 11.2 Opportunities for yarn texturing outside low labour-cost countries; 11.3 Reference; 12 End uses for draw textured yarns; 12.1 Property benefits of textured yarns; 12.2 Nylon; 12.3 Polyester; 12.4 Polypropylene; 12.5 References; 13 The future of false twist texturing; 13.1 Global production trends; 13.2 Machine development; 13.3 Process integration |
13.4 Raw material yarns |
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Sommario/riassunto |
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A false twist textured yarn is a continuous filament yarn that has been processed to introduce crimps, coils, loops and other fine distortions along the yarn's length. These distortions give synthetic yarns such as nylon, polyester and polypropylene improved properties such as stretch, bulk, improved thermal insulation and an appearance similar to natural fibres. This important book summarises the key principles, technologies and process issues in the manufacture of high-quality false twist textured yarns.After an introductory chapter on the development of textured yarns, the book revi |
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