Boucle and Loop Yarn Production Technology
topic
Boucle yarn production uses an assembly winding machine that feeds an effect yarn at higher rate than a core yarn with a binder yarn, creating loops and boucle effects by the differential feed ratio that causes the faster-feeding effect yarn to form loops constrained by the binder yarn, with loop frequency, loop height, and regularity controlled by feed ratio programming and effect yarn tension settings.
Role
Creates the looped boucle yarn structures used in fashion knitwear, tweed suiting, and upholstery fabrics where the random or regular loop effects provide distinctive surface texture, visual depth, and tactile interest that differentiate premium fashion fabrics from plain-spun yarn constructions, with loop stability and resistance to loop pullout governing the durability of boucle yarn in mechanical processing and end use.