Spinning fibres and making a yarn 0.0 / 5 ? TextilesFibres and yarnsAll LevelsAQA Created by: Steff06Created on: 22-05-16 13:03 How are synthetics spun (3) Synthetic polymer chips are melted. Molten synthetic solution extruded through spinnerette. Dried/set using 1 of 3 methods. 1 of 13 What is produce from spinning? A smooth, continuous filament. 2 of 13 What are the 3 types of drying and setting the fibres? Wet spinning, dry spinning, melt spinning. 3 of 13 What is wet spinning? Where they are set in a chemical bath. 4 of 13 What are examples of fabrics that were wet spun? Viscose and acrylic. 5 of 13 What is dry spinning? Hardened in warm air. 6 of 13 What are examples of fabrics that were dry spun? Acrylic and acetate. 7 of 13 What is melt spinning? Hardened in cool air. 8 of 13 What are examples of fabrics that were melt spun? Nylon and polyester. 9 of 13 What is the basic process of making a yarn? (3) Cotton or wool fibres used. They are carded (combed) together to form a soft sliver. They are twisted together. 10 of 13 What are the reasons for twisting? Adds strength, aligns fibres, adds texture and bulk. 11 of 13 What are the properties of a low twist? Bulky and more insulating. 12 of 13 What are the properties of a high twist? Less insulating, tight, smoother and more reflective. 13 of 13
Comments
No comments have yet been made