COMPOSITION FOR SOFT GROUNDWOOD BOARD Russian patent published in 2005 - IPC

Abstract RU 2245890 C2

FIELD: woodworking industry, in particular composition for soft groundwood board.

SUBSTANCE: claimed composition contains (mass %): wood fiber 86.7-92.5; fiber-containing precipitate 9.6-3.8; paraffin emulsion 2.5; and sulfuric acid 1.2; wherein ratio of wood fiber and fiber-containing precipitate is 90-96:10-4, respectively. Fiber-containing precipitate used as wood raw material represents waste from wet method for production of soft groundwood board and sulfate method for production of cellulose.

EFFECT: method for production of soft groundwood board with reduced prime wood mass consumption without deterioration of characteristics.

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RU 2 245 890 C2

Authors

Denisov S.V.

Chelysheva I.N.

Varankina G.S.

Dates

2005-02-10—Published

2003-02-25—Filed