• Saray polystyrene granules et ilalaok ed foaming agent insan i-extrude ed atagey a temperatura tan pressure ya uusaren so extruder.
• Kayari na pangi-extrude, say mixture et maples ya onlemew tan naporma pian magmaliw ya tuloytuloy ya sheet.
• Saray katangian na proseso: Say atagey a temperatura na extrusion et manresulta ed sakey a masimpit ya istruktura na molekula tan sigpot ya akasara iray pores.
