Zinthu zokhala ndi laminated zimatanthawuza chinthu choyikapo chomwe chimapangidwa pomangirira zigawo ziwiri kapena zingapo za filimu yapulasitiki ndi zinthu zina kudzera pansanjika yolumikizira. Matumba opaka ayisikilimu opangidwa ndi laminated samangokhala ndi madzi abwino kwambiri, osamva mpweya wabwino, komanso osamva UV, komanso amakhala ndi zotsatira zabwino pakusunga ndi kusunga ayisikilimu. Panthawi imodzimodziyo, ali ndi makhalidwe abwino monga kukana mphamvu, kukana misozi, ndi kukana kuvala, zomwe zingathe kuteteza ayisikilimu kuti asafike kwa ogula bwino komanso osawonongeka.