Cylinder group provided with single-wire draw in the dryer secti

Details Cylinder group provided with single-wire draw in the dryer secti Cylinder group provided with single-wire draw in the dryer secti

1998-04-17

2000-06-06

Bennett, Henry

Drying and gas or vapor contact with solids

Apparatus

Rotary drums or receptacles

D06F 5800

Patent

active

060703407

ABSTRACT:
A dryer group with single-wire draw in the dryer section of a paper machine including heated drying cylinders having a smooth face against which a paper web to be dried is brought into direct contact, reversing cylinders and a drying-wire guided by guide rolls, the drying cylinders and the reversing cylinders in a loop whereby the drying cylinders are situated outside the wire loop and the reversing cylinders are situated in gaps between the drying cylinders and inside the wire loop of the drying wire. The drying cylinders consist of large cylinders and small cylinders, the diameter D of the large cylinders being larger than the diameter d of the small cylinders. The small cylinders are situated in gaps between adjacent pairs of large cylinders so that their centers of rotation are on a level substantially different from the level of the centers of rotation of the large cylinders. The reversing cylinders are situated on the runs of the drying wire and the web from a large cylinder to a small cylinder and from a small cylinder to a large cylinder. The centers of rotation of the reversing cylinders is on a level or levels different from the corresponding levels of the large cylinders and the small cylinders.

REFERENCES:
patent: 4850121 (1989-07-01), Ely
patent: 5022163 (1991-06-01), Ilvespaa et al.
patent: 5279050 (1994-01-01), Tormanen
patent: 5539999 (1996-07-01), Kuhasalo

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