Multi-layer headbox and separator vane therefor

Details Multi-layer headbox and separator vane therefor Multi-layer headbox and separator vane therefor

1999-02-23

2000-12-26

Hastings, Karen M.

Paper making and fiber liberation

Apparatus

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

162344, D21F 102

Patent

active

061653241

ABSTRACT:
A headbox for discharging a jet consisting of one or more stock layers to a forming zone in a former comprising at least one separator vane separating two stock channels in order to keep the stocks on each side of the separator vane separated from each other and having engagement dowels arranged in a row for detachable mounting on a turbulence channel group via an engagement part with a through-running groove to receive the upstream end portion of the separator vane and its engagement dowels to secure the separator vane in machine direction, said groove having two longitudinally extending recesses with support and guide walls facing the free engagement end portions of the engagement dowels. According to the invention the engagement dowels are yieldingly arranged in the separator vane to be displaced laterally in relation to an unaffected starting position when influenced by forces occurring at the support and guide walls, or to be inclined when the separator vane is pushed aside from its normal position to equalize a pressure difference between the two stock channels.

REFERENCES:
patent: 3843470 (1974-10-01), Betley et al.
patent: 4133715 (1979-01-01), Hergert
patent: 4445974 (1984-05-01), Stenberg
patent: 4812209 (1989-03-01), Kinzler et al.
patent: 5545294 (1996-08-01), Linden et al.

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