METHOD OF FABRICATING PRODUCTS FROM COMPOSITE MATERIAL BASED ON CELLULOSE-CONTAINING FILLER OF VEGETABLE ORIGIN AND MINERAL BINDER Russian patent published in 1997 - IPC

FIELD: wood working and manufacture of building materials. SUBSTANCE: method includes applying 5-15% of aqueous solution of commercial-grade lignosulfonates or hydrolysis lignin onto particles of cellulose-containing filler of vegetable origin, e.g. wood chips. The thus coated filler particles are treated with mineralizators, e.g. liquid glass and aluminium sulfate solutions, and then mixed with mineral binder. Mixture obtained is put into molds, aged, and heat treated. Products are characterized with density 506-1141 kg/cu.m, statistic bending strength 10-12 MPa, compression strength 0.38-0.98 MPa, and water uptake 6.5-9.0% for 24 h. EFFECT: improved consumer's quality. 1 tbl