Kune nzira dzakawanda dzepre-printing surface pretreatment yeepurasitiki firimu kudhinda muchina, iyo inogona kazhinji kugoverwa mumakemikari ekurapa nzira, nzira yekurapa moto, corona discharge treatment method, ultraviolet radiation treatment method, etc. Nzira yemakemikari yekurapa inonyanya kuunza mapoka epolar pamusoro pefirimu, kana kushandisa makemikari reagents kubvisa zvinowedzera pamusoro pefirimu kuti ivandudze 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 kuburitsa mahara radicals, ion, nezvimwewo, uye kuita pamusoro pefirimu kuti igadzire zvikamu zvitsva zvepasi uye kushandura 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.