Paper making and fiber liberation – Processes and products – Running or indefinite length work forming and/or treating...
Patent
1999-05-06
2000-11-14
Hastings, Karen M.
Paper making and fiber liberation
Processes and products
Running or indefinite length work forming and/or treating...
162216, 162217, 162315, 162317, 162347, D21F 104
Patent
active
061465003
ABSTRACT:
A suction breast roll former has a support surface with a plurality of apertures formed therein that are operatively connected to a vacuum source. A headbox has a flexible roof extending downstream from a slice opening and disposed adjacent to a support surface of the suction breast roll. The headbox permits the flexible roof to bend over a range of movement relative to the support surface to match the shape of a drainage curve suiting current operating conditions. A method of forming a paper web includes the steps of supplying an aqueous suspension of papermaking fibers to a forming zone created between the suction breast roll and the headbox. The headbox includes a slice body and an apron that define a slice opening therebetween and also has a flexible roof extending from the slice opening and spaced from the support surface to define a forming zone therebetween. A forming fabric is passed through the forming zone to receive the aqueous suspension of papermaking fibers. The flexible roof is permitted to bend over a range of movement relative to the support surface to match the shape of a drainage curve. A restraining member is spaced from the flexible roof and positioned to limit the range of movement of the flexible roof.
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Glass Keith Douglas
Gropp Ronald Frederick
Hada Frank Stephen
Charlier Patricia A.
Connelly Thomas J.
Hastings Karen M.
Kimberly--Clark Worldwide, Inc.
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