METHOD OF PRODUCTION OF FIBREBOARD Russian patent published in 1997 - IPC

Abstract RU 2083747 C1

FIELD: production of fibreboard. SUBSTANCE: paper - base of fibreboard is impregnated with parchmentizing solution of 85-90% phosphoric acid. Monolithic web is formed from impregnated layers of paper, washed from parchmentizing solution, dried and pressed. Introduced into parchmentizing solution is monocalcium phosphate in the amount of 0.1-0.5% in terms of CaO. EFFECT: higher efficiency. 1 tbl

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RU 2 083 747 C1

Authors

Akaev O.P.

Natsevich O.P.

Dates

1997-07-10—Published

1995-04-20—Filed