Kukho iindlela ezininzi zokunyanga umphezulu ngaphambi kokuprintaumatshini wokuprinta ifilimu yeplastiki, enokwahlulwa ngokubanzi ibe yindlela yokunyanga ngamakhemikhali, indlela yokunyanga ilangatye, indlela yokunyanga ngokukhupha i-corona, indlela yokunyanga ngemitha ye-ultraviolet, njl. Indlela yokunyanga ngamakhemikhali ikakhulu kukungenisa amaqela e-polar kumphezulu wefilimu, okanye ukusebenzisa ii-reagents zamakhemikhali ukususa izongezo kumphezulu wefilimu ukuphucula amandla omphezulu wefilimu.

Umgaqo osebenzayo wendlela yokunyanga ilangatye kukuvumela ifilimu yeplastiki idlule ngokukhawuleza kwi-10-20mm ukusuka kwilangatye langaphakathi, kwaye usebenzise ubushushu belilangatye langaphakathi ukukhuthaza umoya ukuvelisa ii-free radicals, ii-ions, njl.njl., kwaye ziphendule kumphezulu wefilimu ukwenza izinto ezintsha zomphezulu kwaye zitshintshe iipropati zomphezulu wefilimu ukuphucula ukunamathela kwi-inki. Izinto zefilimu ezicociweyo kufuneka ziprintwe ngokukhawuleza, kungenjalo umphezulu omtsha uya kutshabalala ngokukhawuleza, nto leyo eya kuchaphazela isiphumo sonyango. Unyango lwelangatye kunzima ukululawula kwaye ngoku luthatyathelwe indawo lunyango lokukhupha i-corona.

Umgaqo osebenzayo wonyango lokukhupha i-corona kukudlulisa ifilimu kwindawo yombane, evelisa ii-pulses ezijikelezayo ezinyanzela umoya ukuba u-ionize. Emva kokufakwa kwe-ion, ii-ion zegesi ziyayithintela ifilimu ukuze yonyuse ukurhawuzelela kwayo.

Kwangaxeshanye, ii-athomu ze-oksijini ezikhululekileyo zidibana neemolekyuli ze-oksijini ukuze zenze i-ozone, kwaye amaqela e-polar aveliswa phezu komphezulu, nto leyo ekugqibeleni yonyusa uxinzelelo lomphezulu wefilimu yeplastiki, nto leyo enceda ekunamatheleni kwee-inki kunye nezincamathelisi.