Apparatus for drying a fibre web

Details Apparatus for drying a fibre web Apparatus for drying a fibre web

1994-08-01

1997-01-21

Larson, James

Drying and gas or vapor contact with solids

Apparatus

For diverse operations on treated material

34242, 34119, F26B 1310

Patent

active

055949967

ABSTRACT:
A drying apparatus for drying a fibre web (5) between two air-tight bands (1, 2) moving in the same direction. One band (1) is heated by hot steam and the other band (2) is cooled by water, and the fibre web (5) is passed through a drying zone formed by the bands (1, 2) with at least one felt or wire (3, 4) so that the fibre web (5) is in contact with the surface of the heated band, and the felt or wire (3, 4) is between the fibre web (5) and the cooled band (2). In the invention the drying zone and the water chamber (14) cooling the lower band (2) are in communication with each other for controlling the pressure difference between them by a simple connection, such as a pipe (25) opening at a suitable height.

REFERENCES:
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patent: 4461095 (1984-07-01), Lehtinen
patent: 4506457 (1985-03-01), Lehtinen
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patent: 4787641 (1988-11-01), Rautakorpi et al.
patent: 4887362 (1989-12-01), Rautakorpi
patent: 4899461 (1990-02-01), Lehtinen
patent: 4932139 (1990-06-01), Lehtinen
patent: 4958444 (1990-09-01), Rautakorpi et al.
patent: 5471765 (1995-12-01), Rautakorpi et al.

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