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Method and apparatus for freely suspending moving webs of material

  • US 4,085,522 A
  • Filed: 10/29/1973
  • Issued: 04/25/1978
  • Est. Priority Date: 10/30/1972
  • Status: Expired due to Term
First Claim
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1. A method for freely suspending a moving web of material in a gaseous medium, which comprises impinging, by means of a stable emitting system, a stream of gaseous medium onto the surface of the web from one side only in order to produce at least one stationary stable pressure zone, in which a repelling force decreases continually with an increasing distance from the emitting system,forming at least one stationary stable suction zone adjacent said stationary pressure zone, in which a suction force decreases continually with an increasing distance from means forming the suction zone to a smaller degree than the repelling force in the pressure zone,and regulating the applied stable pressure of the stable emitting system and the suction of the stable suction zone in order to make the repelling force equal to the suction force at the zone where the web is freely suspended between the emitting system and the means forming the suction zone.

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