Pressurized forming board

Details Pressurized forming board Pressurized forming board

1991-02-26

1992-01-14

Hastings, Karen M.

Paper making and fiber liberation

Apparatus

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

162352, 162354, 162211, D21F 120, D21F 154

Patent

active

050807609

ABSTRACT:
A paper making machine forming board is described wherein the rate of drainage of the stock through the forming fabric is curtailed and controlled by applying a low positive air pressure (above ambient atmospheric) to the machine side of the forming fabric. Additionally, a controlled level of agitation is induced in the stock on the forming board, providing better initial paper formation.

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patent: 4734164 (1988-03-01), Irwin et al.
patent: 4802954 (1989-02-01), Malashenko

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