Dabooleyaasha filimaanta polyester-ka ee birta ah ee la dahaadhay waxay caadi ahaan u adeegsadaan filim polyester-ka la bireeyay sida dielectric ahaan, oo leh lakabyo bir ah oo ku dahaaran labada dhinac sida taarikada, ka dibna waxaa lagu daboolaa walxo daboolaya (sida caadiga ah caag ama resin). Noocaan baakaduhu wuxuu caawiyaa ilaalinta qaab-dhismeedka gudaha ee capacitor-ka iyo ka hortagga saameynta deegaanka dibadda ee capacitor-ka.