公开(公告)号：US5394622A

公开(公告)日：1995-03-07

申请号：US76672

申请日：1993-06-15

申请人： Kent J. Evans ,  Warren R. Smith ,  Robert F. Dunham ,  Timothy J. Leenhouts ,  Barbara D. Ceglinski ,  Richard A. Cairncross

发明人： Kent J. Evans ,  Warren R. Smith ,  Robert F. Dunham ,  Timothy J. Leenhouts ,  Barbara D. Ceglinski ,  Richard A. Cairncross

IPC分类号： F26B13/10 ,  F26B19/00

CPC分类号： F26B13/10

摘要： A dryer with zone temperature controls for drying thick polymer-solvent layers on a substrate. The dryer is formed with several heating elements located in an air duct. The cool air is heated a specific amount as it passes each heating element. The heated air is then applied to the polymer-solvent solution on the substrate in a continuous fashion so that the polymer-solvent solution slowly heats up as it passes through the drying apparatus. The preferred design is to ensure a zone residence time of less than 10 seconds and a web heating rate of 10.degree. F./second or less. Most preferred design is a zone residence time less than 5 seconds and a heating rate less that 5.degree. F./second. The dryer is designed to have a continuous temperature gradient, especially in the critical later stages of drying when the solvent content of the film is less than 20%.

摘要翻译： 具有区域温度控制的干燥器，用于干燥基底上的聚合物 - 溶剂层。 干燥器形成有位于空气管道中的多个加热元件。 冷空气通过每个加热元件时加热一定量。 然后将加热的空气以连续的方式施加到基底上的聚合物 - 溶剂溶液中，使得聚合物 - 溶剂溶液在其通过干燥装置时缓慢加热。 优选的设计是确保区域停留时间小于10秒，网加热速率为10°F /秒以下。 最优选的设计是区域停留时间小于5秒，加热速率小于5°F /秒。 干燥器设计为具有连续的温度梯度，特别是当膜的溶剂含量小于20％时，在干燥的关键后期阶段。