Kune nzira dzakawanda dzepre-printing surface pretreatment yeepurasitiki firimu kudhinda muchina, iyo inogona kazhinji kukamurwa kuita makemikari kurapwa nzira, murazvo kurapwa nzira, corona discharge kurapwa nzira, ultraviolet nemwaranzi kurapwa nzira, etc. Kemikari kurapwa nzira inonyanya kusuma mapoka polar pamusoro pefirimu, kana kushandisa kemikari reagents kubvisa. izvo zvinowedzera pamusoro pemufirimu kuti uvandudze simba repamusoro refirimu.

Nheyo yekushanda yenzira yekurapa moto ndeyekurega firimu repurasitiki richikurumidza kupfuura 10-20mm kure nemurazvo wemukati, uye kushandisa tembiricha yemurazvo wemukati kukurudzira mhepo kugadzira mahara radicals, ion, nezvimwewo, uye kuita pa pamusoro pefirimu kuti iite zvikamu zvitsva zvepamusoro uye kuchinja firimu.pamusoro zvivakwa kuvandudza adhesion kuti ingi.Iyo yakarapwa firimu zvinhu inofanira kudhindwa nekukurumidza sezvinobvira, kana zvisina kudaro iyo nyowani nyowani ichapfuudzwa nekukurumidza, izvo zvinokanganisa maitiro ekurapa.Kurapa kwemoto kwakaoma kudzora uye iko zvino kwatsiviwa nekurapa kwekubuda kwecorona.

Musimboti wekushanda wecorona discharge treatment ndeyekupfuudza firimu kuburikidza nevolti field, iyo inogadzira yakakwirira-frequency oscillating pulses inomanikidza mweya kuti ionize.Mushure meiyo ionization, iyo gasi ion inopinza firimu kuti iwedzere kuomarara kwayo.

Panguva imwecheteyo, maatomu eokisijeni emahara anosanganiswa nemamorekuru eokisijeni kugadzira ozone, uye mapoka epolar anogadzirwa pamusoro, izvo zvinozopedzisira zvawedzera kusawirirana kwepamusoro kwefirimu repurasitiki, rinobatsira pakunamira kweingi nemanamira.