--- title: "7.3 Production of yarn from cottonised hemp fibres" canonical: "https://wiki.groenkennisnet.nl/space/HNPE/295011570/7.3%20Production%20of%20yarn%20from%20cottonised%20hemp%20fibres" format: markdown --- The wet, semi-wet or dry ring spinning processes are relatively slow. Rotor spinning (also called 'open-end spinning') is much faster. This requires short fibres of a few cm length. Among biobased fibres, cotton is a well-known example that can be spun this way. However, the 'short fibres' coming from the scutching and hackling processes (§[7.1.1](https://wiki-groenkennisnet.atlassian.net/wiki/spaces/HNPE/pages/295011283), [7.1.3](https://wiki-groenkennisnet.atlassian.net/wiki/spaces/HNPE/pages/295011368)) are still too long for rotor spinning. These hemp fibres can be made shorter and finer by means of cottonisation (§[7.3.1](https://wiki-groenkennisnet.atlassian.net/wiki/spaces/HNPE/pages/295011596)), so that they can be spun into yarn like cotton by rotor spinning (§[7.3.2](https://wiki-groenkennisnet.atlassian.net/wiki/spaces/HNPE/pages/295011622)). [§7.3.1 Cottonisation](https://wiki-groenkennisnet.atlassian.net/wiki/spaces/HNPE/pages/295011596) [§7.3.2 Spinning of short staple fibres](https://wiki-groenkennisnet.atlassian.net/wiki/spaces/HNPE/pages/295011622) > ℹ️ Further information > ℹ️ > ℹ️ - HOGENT, 2020. ‘Yarn technology 1: Mechanical spinning’ (Dutch) > ℹ️ - Very broad information on yarns: types, structure, spinning methods (traditional, new and advanced), and properties. > ℹ️ - [https://issuu.com/communicatie-hogent/docs/garentechnologie_1](https://issuu.com/communicatie-hogent/docs/garentechnologie_1) > ℹ️ - 141 pages > ℹ️ - Carl A. Lawrence, ‘Fundamentals of spun yarn technology’, 2003, CRC Press > ℹ️ - Very comprehensive information on fibre raw materials, raw material preparation, spinning principles and techniques, yarn structure and properties, and background information on relationships between raw materials, processing and properties. > ℹ️ - [www.eopcw.com/find/downloadFiles/237](http://www.eopcw.com/find/downloadFiles/237) > ℹ️ - 500 pages