| 摘要 |
A process for treatment of a web by means of impingement by high velocity gaseous fluid is provided. The process constitutes the provision of a web to a treatment zone at a tension of between about 1 and about 5 pounds force per linear inch of web width. In the treatment zone the web is subjected to the imposition of high velocity gaseous fluid substantially tangential to the web and in the direction of travel by the web through the treatment zone, such that a series of saw-tooth waves are formed in and move along the web in the direction of travel by the web. An apparatus for carrying out the process is also provided.
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