Spun yarn production
Yarn spinning is a process of converting fibres from the compressed bale into a yarn. In textile industry, the size of yarns is determined by unit of Denier, Tex, Worsted and Woolen.
True or False?
Mark true or false for each of the following statements:
Spun yarns are generally smoother, stronger and more lustrous then filament yarns?
Spun yarns are all the opposite. They are less lustrous due to the protruding fibre ends that stick out of the yarns produced by these measurable lengths of fibres. Filament fibre yarns are stronger then staple spun yarns due to the continuous fibres in the yarn.
Some fibres are only available in staple form?
All natural fibres, with the exception of silk, are “born” as staple fibres; this means that they are measurable in their length. They have a specific length.
Natural fibres grow or develop in fibre form and come from plant, animal or mineral sources?
Natural fibres can be found in ready fibre form already in nature and do not need manufacturing.
Microscopy works well to identify all fibres?
Identification of natural fibres is best done by microscopy and in many cases both the cross-section and lengthwise view of the fibre should be done to best identify an unknown fibre. Man-made fibres are more difficult to identify under microscopy since their appearance can vary during their manufacturing (different cross-sections, lengthwise surface, dulling, etc.).
A fibre with a denier of 1 would be softer and more flexible then a fibre with a denier of 10?
The higher the fibre number, the thicker the fibres are and thus less soft, flexible, etc. 1 Denier = the fibre weighs 1 gram per 9.000 meters of fibre and 10 denier = fibre weighs 10 grams per 9.000 meters of the fibre.
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Project
This resource was developed as part of an Erasmus+ project, funded with support from the European Commission under grant agreement 2016-1-SE01-KA203-22064.
The project was a collaboration between:
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