METHOD OF AMBER TREATMENT Russian patent published in 2001 - IPC

FIELD: treatment of amber raw materials, mainly, fine fractions and manufacture of amber articles and production of various compositions including amber. SUBSTANCE: method includes charging of amber raw materials into working chamber; heating of raw materials to temperature of their softening but not lower than 130^oC: holding at this temperature and cooling. After sealing of charged chamber, raw materials are subjected to uniform compression, filtration and removal of amber thermal destruction products. Compression, filtration and removal are carried out by evaluation of working chamber during the entire cycle of articles manufacture. EFFECT: increased quality of amber articles, high coefficient of chamber use, utilization of manufacture wastes. 3 dwg