PVA txhais tau tias yog polyvinyl alcohol khoom siv uas tsim nyog rau systems siv dej hauv tsoj lij uas xav tau kev nyiaj sib cuag zoo, kev tsim cov duab, thiab kev nyiaj siab hauv kev tsim kho. Cov khoom PVA yog yooj yim tshaj plaws hauv kev siv adhesive, siv cov roj sib ntxoov rau daim ntawv, kev ntxoov hluas, kev lag luam kho tsoom, thiab kev ntxoov cov emulsion. Thaum muab nws cham tsis rau dej, PVA tsim tau cov solution sib xws uas muaj kev nyiaj sib cuag zoo rau cov ntawv thiab dej. Hauv kev lag luam kho tsoom, PVA pab txhim kho kev sib nyiaj, kev ua haujlwm zoo, thiab kev nyiaj siab. Qhov kev tsim nyog ntawm nws hauv tib che pab nws ua ib qho khoom tseem ceeb hauv kev tsim kho noj tsha. Rau cov ntaub ntawv sau npe ntau dua, cov ntaub ntawv tsim nyog tshwj tsis, lossis cov lus sib tham hauv tsoj lij, yuav tsum hu rau saum npog.