METHOD FOR FORMING FABRIC FROM AEROSUSPENSION OF FIBROUS MATERIAL Russian patent published in 2000 - IPC

Abstract RU 2157867 C2

FIELD: pulp-and-paper industry. SUBSTANCE: method involves feeding aerosuspension onto movable forming grid inclined relative to aerosuspension flow; removing air component from aerosuspension by means of suction device positioned at reverse side of grid. Inclination angle α of forming grid in the direction of movement of grid in countercurrency to aerosuspension flow is selected from ratio arcctg (Vs/Vf+ ) <α <arcctg (Vs/Vf- ), where Vs is speed of forming grid; Vf is rate of filtering of air via layer of formed fabric and forming grid by means of suction device at set stationary air flow rate from aerosuspension into suction device; η is coefficient of filament sliding friction against forming grid. As a result, produced fabric is prevented from shifting under the action of aerodynamic pressure of aerosuspension flow. Method allows extent of homogeneity of produced paper to be increased. EFFECT: increased efficiency and improved quality of paper fabric. 1 dwg, 1 tbl

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RU 2 157 867 C2

Authors

Drobosjuk V.M.

Dates

2000-10-20Published

1998-11-16Filed