OPTIMIERUNG DER FADENBEANSPRUCHUNGEN BEI DER FACHBILDUNG

Abstract

The character and size of yarn stress during the shed formation are determined by its technological dimensions: the height and other measurements of the shed, the breaking angle of the basis level and the course of shed formation. On shuttle weaving machines the shed must be clear, i.e., each warp thread must be in the same plane in the front part of the shed. In clear shed the elongation of yarns depends on which heddles are threaded in with the yarn. Further variations of elongation come from various shed lengths that depend on the row of lamella and on the order of threading in. On shuttleless weaving machines clear shed is not necessary. It is useful to prescribe the order of threading in the lamella in that way that yarns drawn in the healds No. 1 to 2 should be threaded in row No. 1 of lamella, etc. and elliptic shed form should be set up determined by the various shed lengths and equal yarn elongations.