To the estimation of yarn linear density change in the process of knitting

This article is devoted to the estimation of changes of linear density of yarn in the process of knitting. The conditions of varying the thickness of twisted yarn, self-twisted yarn, some of elastic threads and etc are shown. It is established that in consequence of the partial untwisting of twisted yarns and stretch elastic (rubber, elastomeric) threads in the process of knitting their linear density is decreased. The corresponding expressions for definition the linear density of each specific variant of the threads are listed.