Closed draw transfer system with gaseous pressure direction of web

  • US 3,981,084 A
  • Filed: 05/01/1974
  • Issued: 09/21/1976
  • Est. Priority Date: 06/19/1972
  • Status: Expired due to Term
First Claim
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1. A paper making apparatus for assuring movement of paper in the desired path of travel after passing through a nip in a closed draw transfer system, said apparatus comprising, in combination, a gas permeable top pick-up felt having paper carried thereon for processing, a Yankee dryer for assisting in defining said nip with said felt, said paper being located between said felt and said Yankee dryer at said nip, said nip having an outgoing side and an incoming side, means for moving said felt and thereby said paper to said nip for processing said paper at said nip, a roller associated with said felt for cooperating in defining said nip, a chamber defined with said roller, means for communicating the outer surface of said roller with the interior of said chamber, means for substantially continuously applying gaseous pressure from within said chamber through said communicating means in a direction towards said Yankee dryer on said outgoing side of said nip through said gas permeable felt and against said paper being passed through said nip so as to urge said paper onto said Yankee dryer, only said felt carrying said paper to said nip and only said Yankee dryer carrying said paper from said nip after passing through said nip.

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