FIELD: films.
SUBSTANCE: invention relates to a method for producing a polystyrene film. Said method includes the stages of preparing an initial mixture from 80 to 83 wt.% crushed polystyrene and 17 to 20 wt.% crushed modifier - thermoplastic elastomer; melting the initial mixture, preparing mixture (2) including a dye based on polyethylene and titanium dioxide, hydrophobic chalk, and zinc stearate in the ratio 2.9:3.5:0.01; melting mixture (2); mixing the initial mixture and mixture (2) in the ratio 93.3–93.6:6.4–6.7; drying with hot air at 90 °C to a moisture content of 18% and extruding the molten mixture so as to form a sheet. The modifier — thermoplastic elastomer is a thermoplastic elastomer based on artificial rubber, polypropylene, mineral oil, and synthetic wax.
EFFECT: increase in the effect of modification of general-purpose polystyrene with a thermoplastic elastomer, reduced duration of the process and amount of waste; resulting polystyrene film has increased impact strength, tear resistance, water impermeability, hygienic properties, and heat resistance.
1 cl, 3 tbl, 3 ex
