| 摘要 |
<p>Drying apparatus including pressure control of air supply feeding an air bar and subsequently impinging upon a web, so as to avoid or compensate for web shift without disturbing the cushion pressure and flotation techniques necessary for adequate web flotation and drying, as well as a method of regulating the pressure of supply air to such air bars. A damper or valve (18) is positioned in the header system (at 33) between first and second ducts (30, 31) feeding each air bar. Proper adjustment of the damper (18) regulates the pressure of supply air in each duct (30 and 31), and compensates for web shift, or minimizes said web shift, or prevents it from occurring. <IMAGE></p> |
