METHOD FOR PRODUCTION OF FOAM POLYSTYRENE GRANULES, PROCESS LINE FOR METHOD REALISATION AND STABILISATION UNIT USED IN THIS LINE Russian patent published in 2009 - IPC B29B9/16 B29B13/00 C08J9/16 

FIELD: technological processes.

SUBSTANCE: present invention is related to devices and methods intended for production of foam polystyrene in the form of granules. Method is described for production of foam polystyrene granules, which includes supply of foaming polystyrene granulated material into chamber of foaming device provided with blade mechanism, production of foam polystyrene granules by means of granulated material foaming in steam-air medium, temperature reduction and drying of granules directly after foaming in process of continuous mixing, pneumatic transportation of granules to stabilisation unit, aeration of granules in it in movable air medium, and the method differs by the fact that initial raw materials used is granulated material of self-extinguishing foaming polystyrene, which is powdered with antistatic substance prior to foaming, after foaming steam supply to chamber of foaming device is isolated, and granules are dried in it with simultaneous mixing by blade mechanism, with further cooling in intermediate reservoir, and in stabilisation unit granules are aerated in turbulent medium of heated air at the temperature that is not higher than temperature of hot plastic deformation of granules. Process line is also described as well as stabilisation unit for production of foam polystyrene granules.

EFFECT: method and process line simplification at high efficiency and production of foam polystyrene granules with preset properties suitable for filling of orthopaedic products.

4 cl, 1 dwg