Web controlling apparatus.

摘要

An apparatus for controlling an outgoing web leaving an air cushion turning bar, which enables a convenient transport of longitudinally curved webs over such air turning bar. The apparatus comprises first (24) and second (26) constraint means for the outgoing web (22), movable laterally normal to the true outgoing web path, and web tension gradient control means (25) disposed between said first (24) and second (26) lateral constraint means.