A headbox in a paper-making machine having a flow rectifier

Details A headbox in a paper-making machine having a flow rectifier A headbox in a paper-making machine having a flow rectifier

1984-05-07

1985-03-12

Alvo, Steve

Paper making and fiber liberation

Apparatus

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

162344, D21F 102, D21F 106

Patent

active

045043604

ABSTRACT:
A headbox for a paper-making machine having a flow rectifier which comprises a first flow control member disposed in a flow path and a second flow control member disposed in a downstream side of the first flow control member. Being in contact with the first flow control member, the second flow control member is so constituted that the flow stagnation phenomena generated by the first flow control member is eliminated by the second flow control member. In other words, a uniform flow rate distribution or speed is achieved across the outlet of the second flow control member by rapidly decelerating the flow therein.

REFERENCES:
patent: 3486972 (1969-12-01), Nagell
patent: 3514372 (1970-05-01), Boyce et al.
patent: 4070238 (1978-01-01), Wahren

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