%0 Journal Article %T Modification by tannins extract of binding for production of chipboard %A Vakhnina, T.. %A Borovkova, A.. %K the cortex, tannids (tannins), wood composite, binding, strength, swеlling, mathematical model %J Actual directions of scientific researches of the XXI century: theory and practice %D 2014 %N 2 %P 5 %I FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov