Apparatus in a drying section of a paper machine

Details Apparatus in a drying section of a paper machine Apparatus in a drying section of a paper machine

1985-02-19

1986-12-16

Makay, Albert J.

Drying and gas or vapor contact with solids

Apparatus

Rotary drums or receptacles

34122, 34123, F26B 1308

Patent

active

046286187

ABSTRACT:
In the drying section of a paper machine, apparatus for preventing conditions tending to deteriorate the contact between a web and a supporting fabric which carries the web from a drying cylinder in one line to a drying cylinder in another line and, in particular, for preventing a positive pressure from being generated in the narrowing gaps defined by the surfaces of the drying cylinders and the web supporting fabric as it approaches and/or moves away from the drying cylinder. The apparatus includes a blow box extending transversely substantially over the width of the web, the blow box including at least two transversely extending gas discharge slots between which a substantially planar carrying surface is provided in opposed, parallel relationship to the web carrying fabric and spaced a distance therefrom which is at least twice, and preferably ten to thirty times, as large as the width of a gas discharge slot.

REFERENCES:
patent: 4190964 (1980-03-01), Schiel
patent: 4441263 (1984-04-01), Vedenpaa
patent: 4502231 (1985-03-01), Fissmann et al.
patent: 4516330 (1985-05-01), Eskelinen

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