PROCESS FOR MANUFACTURING WOOD FIBER BOARDS Russian patent published in 1994 - IPC

Abstract RU 2009888 C1

FIELD: manufacture of wood fiber materials. SUBSTANCE: process includes the use of paper currency material to be shredded to fines of 40-50 ^° as plant raw material and a flocculating agent, preferably 0.025-0.1 % aqueous solution of 1.2-dimethyl-5-vinyl-pyridinium-methyl sulfate, pH 6-9 as electrolyte. Formation and dehydration of fibrous structure is carried out in vacuum at pressure of 0.09 to 0.1 MPa and moisture content of 68-72 % with subsequent hot molding of it at temperature of 160 to 180 C, pressure of 0.5 to 2.5 MPa and 0.5-1 % moisture content of the end product. EFFECT: improved quality of wood fiber boards. 1 tbl

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RU 2 009 888 C1

Authors

Pjak B.N.

Kiseleva G.V.

Dmitrienko G.A.

Dates

1994-03-30—Published

1991-10-31—Filed