Abstract
This article gives the results of theoretical studies made by the authors on the expanding mechanism of the bend-bar type roller expander. These studies have made it possible to figure out the state of contact of cloth with the roller, the tension on the cloth, the longitudinal relaxation of the cloth caused by imperfect contact of cloth and roller, and expanding capacity - on a single as well as a triple roller expander. Our studies have disclosed many other facts which we believe will be an effective aid in the manufacture and use of the bend-bar type roller expander.
