METHOD FOR MANUFACTURE OF IMPREGNATED WOODEN ARTICLES Russian patent published in 1999 - IPC

FIELD: production of wooden articles from wood blocks. SUBSTANCE: method involves first stage, at which wood block is subjected to isostatic pressing under pressure above 100 MPa, and second stage, at which wood block is placed into tank containing liquid impregnation substance for swelling so that at least part of impregnation substance is impregnated by wood block. Method may further involve third stage, at which wood block is subjected to isostatic pressing under pressure above 100 MPa for producing hard article. Method allows fire-resistant and/or decay-resistant impregnated articles, as well as stable-shape articles to be produced. EFFECT: increased efficiency and improved quality of articles.