Method and apparatus for drying web

Patent · Wed Jan 01 00:00:00 EST 1992

OSTI ID:868224

Orloff, David I ^[1]; Kloth, Gerald R ^[2]; Rudemiller, Gary R ^[3]

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1. Atlanta, GA
2. Kennesaw, GA
3. Paducah, KY

The present invention is directed to a method and apparatus for drying a web of paper utilizing impulse drying techniques. In the method of the invention for drying a paper web, the paper web is transported through a pair of rolls wherein at least one of the rolls has been heated to an elevated temperature. The heated roll is provided with a surface having a low thermal diffusivity of less than about 1.times.10.sup.-6 m.sup.2 /s. The surface material of the roll is preferably prepared from a material selected from the group consisting of ceramics, polymers, glass, inorganic plastics, composite materials and cermets. The heated roll may be constructed entirely from the material having a low thermal diffusivity or the roll may be formed from metal, such as steel or aluminum, or other suitable material which is provided with a surface layer of a material having a low thermal diffusivity.

• Research Organization: Institute of Paper, Science & Technology, Inc. (Atlanta, GA)
• DOE Contract Number: FG02-85CE40738
• Assignee: Institute of Paper, Science & Technology, Inc. (Atlanta, GA)
• Patent Number(s): US 5101574
• OSTI ID: 868224
• Country of Publication: United States
• Language: English

Related Subjects

method
apparatus
drying
web
directed
paper
utilizing
impulse
techniques
transported
pair
rolls
heated
elevated
temperature
roll
provided
surface
thermal
diffusivity
times
10
-6
material
preferably
prepared
selected
consisting
ceramics
polymers
glass
inorganic
plastics
composite
materials
cermets
constructed
entirely
formed
metal
steel
aluminum
suitable
layer
paper web
suitable material
composite materials
elevated temperature
composite material
surface layer
material selected
composite mat
surface material
omposite materials
drying techniques
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