Sababtoo ah faa'iidooyinka ay ka mid yihiin isku-dhafka degdegga ah, isku-darka isku midka ah, nuugista resin ee wanaagsan ee caagagga, hawlgalka fudud, nadiifinta fudud, adkeysiga, iyo qaab-dhismeedka is haysta, waxaa si ballaaran loo isticmaalaa wax soo saarka warshadaha balaastikada kala duwan.
Isku darka balaastikada ah ayaa ah qalabka lagama maarmaanka u ah dhirta farsamaynta caaga ah, inta badan loo isticmaalo hababka sida isku dhafka polyvinyl chloride iyo midabaynta, qalajinta polyetylen/polypropylene, pretreatment resin ABS ee qaabaynta, qalajinta resin polycarbonate, iyo isku darka resin phenolic. Waxa kale oo ay codsiyo ku leeyihiin warshadaha caagga, dawooyinka, iyo warshadaha dheeha.
