METHOD OF PLASTIC GRANULATOR PRODUCING Russian patent published in 1997 - IPC

FIELD: chemical technology, plastics. SUBSTANCE: plastic granulator is based on thermoplastic (26-70 mas. p. p.) and mineral and/or organic additions (30-74 mas. p. p.). Method of granulator producing involves grinding, mixing and extrusion stages. Extrusion is carried out at temperature 30-60 C above that of thermoplastic melting point followed by granulate cutting at granule size 3.5-10.0 mm. Also, mineral and/or organic additions (their solubility in water is 8-1800 g/dm³) were combined preliminary with thermoplastic part at the ratio = (1:0.25)-(1:4.0) and a mixture is added before extrusion stage. Product can be used for drinking water treatment in food industry, in part, for water hardness decrease. EFFECT: improved method of producing. 3 cl, 2 tbl