Dryer fabrics, often called dryer “felts”, are used to hold paper against the outer surfaces of steam-heated drying cylinders. The pressure from the dryer fabrics increases the rate of heat transfer from the dryer to the paper. The pressure that is applied to the paper depends on the fabric tension and the diameter of the dryer. The pressure can be calculated, as a first approximation, by the equation:
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Written by Greg Wedel
on September 16, 2014.
Kadant Johnson Inc. has expanded its corrugator steam and condensate handling systems to now include Donahue steam systems, Donahue steam traps, and corrugator audit services.
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Written by Danielle Rohrer
on August 06, 2014.
Rotary steam joints have been a part of the corrugating manufacturing process since the 1930’s. Since then, there have been significant advances in sealing technology, rotary joint design, and materials to extend the application range of the conventional pressure-type rotary joint.
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Written by Bob Tuesley
on July 24, 2014.
It has been well-documented that the distance between the condensate entrance of a syphon and the dryer shell, referred to as the syphon clearance, has considerable influence on the operational efficiency of a paper dryer. Suboptimal clearance adversely affects heat transfer capacity and the cross-machine temperature uniformity of the cylinder.
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Written by Jerry Timm
on July 09, 2014.
Pulling a sharp doctor blade from a doctor blade holder with compacted fibers, glue, and wood pitch can be a safety risk, especially without the proper tools.
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Written by Vicki Hunsberger
on June 17, 2014.