Smaller macromolecules penetrate more easily between individual fibres of the yarn bundle, binding the fibres with a minimum of yarn- to-yarn connections and resulting in better fullness.Individual fibres and yarns are bound together, which accounts for the stiffness observed. This is due to their attachment at the fabric surface and accumulation in spaces between yarns. High molecular weight and especially the crosslinked hand builders tend to provide mostly stiffness with some added fullness. Greater stiffness is usual for selected denim articles, work clothes and industrial uniforms, such as some jeans, overalls, aprons and lab coats Awning fabrics Fabrics for window treatments like blinds and curtains require a measure of stiffness Mechanism of Hand Building Finishes Examples Stiffening with starch is often used after laundering shirts, blouses and table linens. The second group provides stiffness or a resistance to bending.
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