Restraint dryer for the drying end of a papermaking machine and

Drying and gas or vapor contact with solids – Process – Gas or vapor contact with treated material

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34117, 34124, D21F 500

Patent

active

059339799

ABSTRACT:
A drying section in a papermaking machine has a first section with a series of single-tiered drying cylinders having vacuum transfer rolls with external vacuum chambers therebetween for improving web runnability, and a second dryer section with a series of single-tiered drying cylinders having movable vacuum transfer rolls disposed therebetween for providing improved cross-directional web shrinkage restraint.

REFERENCES:
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patent: 4934067 (1990-06-01), Wedel
patent: 5063689 (1991-11-01), Sollinger
patent: 5065529 (1991-11-01), Skaugen et al.
patent: 5248390 (1993-09-01), Fissmann et al.
patent: 5269074 (1993-12-01), Sims et al.
patent: 5269075 (1993-12-01), Brunnmair et al.
patent: 5319863 (1994-06-01), Kotitschke et al.
patent: 5321899 (1994-06-01), Kade et al.
patent: 5551164 (1996-09-01), Brunnmair et al.
patent: 5600897 (1997-02-01), Sollinger et al.
Patent Application No. 08/657,754 filed May 30, 1996 entitled "Curl Control With Dryer Aircaps".
Patent Application-Papermaking Dryer with Pivoting Vacuum Transfer Rolls Application No.: 08/740,136.

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