Webs are subjected to large out-of-plane deformations when transiting rollers in process machinery. Webs are often treated as membranes in analysis but become subject to significant bending strains when transiting rollers. Anticlastic bending of thick plates is a known phenomenon. The anticlastic effect is often ignored for webs which are thin. The objective of this paper is to demonstrate that the large bending deformations webs are subjected to on rollers influence the internal membrane stresses and deformations in the web. The results will show that the concept of normal entry of a web to a roller has complexity that has previously not been considered. It will be demonstrated that a cross direction tensile membrane stress results from the large deformations that acts to stabilize the web and inhibit wrinkle formation.

在过程机械中运输辊子时，纤维网会承受较大的平面外变形。腹板在分析中通常被视为膜，但在运输滚筒时会受到很大的弯曲应变。厚板的抗弹性弯曲是一种已知现象。对于薄的纤维网，通常不考虑其抗塑性作用。本文的目的是证明在辊上经受大弯曲变形的幅材会影响内部膜的应力和幅材中的变形。结果将表明，纸幅正常进入辊的概念具有以前没有考虑过的复杂性。将证明横向拉伸膜应力是由大的变形引起的，该大的变形起到稳定纤维网并抑制皱纹形成的作用。