Dryer section with moistening devices at latter ends

Details Dryer section with moistening devices at latter ends Dryer section with moistening devices at latter ends

1994-11-23

1996-09-24

Sollecito, John M.

Drying and gas or vapor contact with solids

Process

Gas or vapor contact with treated material

34117, D21F 504, F26B 304

Patent

active

055578608

ABSTRACT:
A drying section includes a plurality of single-tier dryer groups, optionally followed by one or more double-tier groups. To control curl in the final paper product, a moistening device extending over the width of the drying section is provided near the end of the single-tier dryer groups. The moistening device can be divided into various zones to control the profile of the paper. Alternatively, or in addition to the moistening device, a contact-less dryer such as a infrared dryer can be provided after the dryer section, upstream of a calender section of the paper making machine. The moistening device can be provided to moisten the bottom or, optionally, the top side of the paper web. Where a double-tier dryer group is provided, to control curl the upper drying cylinders and the lower cylinders can be provided with different steam pressures to control curl. Alternatively, each of the cylinders can be individually controlled.

REFERENCES:
patent: 3079699 (1963-03-01), Fry, Jr.
patent: 3938261 (1976-02-01), Anderson
patent: 3948721 (1976-04-01), Winheim
patent: 4646540 (1987-03-01), Blackwood et al.
patent: 4663862 (1987-05-01), Gorissen
patent: 4700493 (1987-10-01), Wedel et al.
patent: 4702015 (1987-10-01), Taylor et al.
patent: 5072527 (1991-12-01), Loomie
patent: 5257465 (1993-11-01), Marx, Jr.
patent: 5269074 (1993-12-01), Sims et al.
patent: 5416980 (1995-05-01), Ilvespaa

Affiliated with

Also associated with

Rating

Dryer section with moistening devices at latter ends does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Dryer section with moistening devices at latter ends, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dryer section with moistening devices at latter ends will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1920958