Title:
【発明の名称】製紙機械の乾燥機部及びペーパーウェブの乾燥方法
Document Type and Number:
Japanese Patent JP3225315
Kind Code:
B2
Abstract:
A new dryer section or an existing dryer section of the two tier double-felted type has air caps disposed over the upper dryer rolls to simultaneously dry both sides of the web to increase drying rates. The heated pressurized air is blown through multiple air impingement holes in the air cap nozzle plates to impinge the web at a temperature of 500-900 degrees Fahrenheit and air speeds of 20,000-40,000 feet per minute. The dryer fabric employed is foraminous with a permeability of between 400-1,200 cubic feet per minute per square foot and is designed to withstand peak temperatures of up to 900 degrees Fahrenheit and average temperatures of between 500-600 degrees Fahrenheit. The design of the air caps utilizes recirculation of the blowing air to control drying rates.
Inventors:
Deshpande, Rajendra Dee
Pulkowski, Jeffrey H.
Pulkowski, Jeffrey H.
Application Number:
JP51083398A
Publication Date:
November 05, 2001
Filing Date:
July 31, 1997
Export Citation:
Assignee:
Beloit Technologies, Inc.
International Classes:
F26B13/16; D21F5/04; (IPC1-7): D21F5/04; F26B13/16
Domestic Patent References:
| JP7252793A | ||||
| JP5247871A | ||||
| JP7301488A | ||||
| JP5209393A | ||||
| JP5222692A | ||||
| JP3174084A | ||||
| JP8114386A | ||||
| JP8114385A | ||||
| JP8120587A | ||||
| JP7189163A | ||||
| JP10502711A | ||||
| JP11511816A |
Other References:
【文献】米国特許3134653(US,A)
【文献】欧州特許出願公開516918(EP,A1)
【文献】欧州特許出願公開516918(EP,A1)
Attorney, Agent or Firm:
Arata Ishikawa (1 person outside)
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