Drop-out steam profiling cartridge

Details Drop-out steam profiling cartridge Drop-out steam profiling cartridge

2011-01-18

2011-01-18

Hug, Eric (Department: 1741)

Paper making and fiber liberation

Processes and products

Running or indefinite length work forming and/or treating...

C162S290000

Reexamination Certificate

active

07871494

ABSTRACT:
A steam distributor for applying steam to a continuously moving paper sheet employs one or more drop-out steam profiling cartridges. Each cartridge is connected to a steam distribution apparatus and includes a number of profiling zones that are covered by a contoured, smooth profiling screen from which steam is applied. The profiling screens are welded to baffles which enhances the structural integrity of the cartridge. No external clamps or other devices are employed that would otherwise disrupt the smooth, curved exterior surface of the profiling screens. The spaced-apart baffles also eliminate the spilling over of steam from one profiling zone to the next which has the effect of minimizing the response width for steam profiling control. The use of the drop-out cartridges permits quick and easy removal of the profiling screens for change-out or cleaning.

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