Paper making and fiber liberation – Apparatus – Running or indefinite length product forming and/or treating...
Patent
1996-07-25
1998-05-05
Hastings, Karen M.
Paper making and fiber liberation
Apparatus
Running or indefinite length product forming and/or treating...
162369, 277 2, D21F 310
Patent
active
057468915
ABSTRACT:
Wear indicators (80) are formed in the seal strips (52, 54) of a suction box (44) of a suction roll assembly (15) of a papermill. The wear indicators include a space such as a bore (74) formed in the seal strip, extending through the arcuate seal surface (68, 70), and extending inwardly of the seal strip. The bores are filled with colored fill material, with red fill material (81) located deep in the bore, yellow fill material (82) placed on top of the red fill material, and green fill material (83) placed on top of the yellow fill material and reaching the seal surface of the seal strip. As the seal strip wears during the operation of the papermill, the colored fill material will be visible upon inspection of the seal strips, informing the inspector of how much farther the seal strips can be urged outwardly into engagement with the suction roll (22) in response to inflation of the inflatable biasing tubes (56, 58 and 60).
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patent: 5240564 (1993-08-01), Niskanen et al.
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patent: 5485653 (1996-01-01), Knowlton et al.
SealPak--Custom Fitted Suction Roll Packing Material (one sheet, two sides) by Voith Sulzer.
Robaseal Sealing Strips (one sheet, two sides) by Fox International Corporation, U.S.A.
Robaseal Sealing Strips, 4 page brochure, by Leripa Kunststoff GmbH + Co. KG.
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