CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS

Description

This subclass covers mechanical processes and apparatus for introducing permanent crimp, curl, or wave structures into textile fibres, filaments, yarns, and threads. It encompasses heat-setting methods, mechanical deformation techniques, and devices that create textured properties for improved elasticity, bulk, and aesthetic characteristics in yarns. The classification includes equipment for continuous and batch processing of various fibre types and the resulting crimped or curled yarn products intended for subsequent textile manufacture.