E nwere ọtụtụ ụzọ maka tupu ibipụta elu pretreatment nkeigwe eji ebipụta ihe nkiri plastik, nke enwere ike kewaa ya na usoro ọgwụgwọ kemịkalụ, usoro ọgwụgwọ ire ọkụ, usoro ọgwụgwọ ịgbapụ corona, usoro ọgwụgwọ radieshon ultraviolet, wdg. Usoro ọgwụgwọ kemịkalụ bụ tumadi iwebata ìgwè polar n'elu ihe nkiri ahụ, ma ọ bụ jiri kemịkalụ reagent wepụ. ihe mgbakwunye n'elu ihe nkiri ahụ iji meziwanye ike elu nke ihe nkiri ahụ.

Ụkpụrụ na-arụ ọrụ nke usoro ọgwụgwọ ọkụ bụ ikwe ka ihe nkiri plastik na-agafe ngwa ngwa 10-20mm site na ire ọkụ dị n'ime, ma jiri okpomọkụ nke ọkụ dị n'ime mee ka ikuku nwee ike ịmepụta free radicals, ions, wdg, ma meghachi omume na ya. elu nke ihe nkiri na-emepụta ihe ọhụrụ elu ma gbanwee ihe nkiri ahụ.Njirimara nke elu iji meziwanye nrapado na ink.Ekwesịrị ibipụta ihe nkiri a na-agwọ ọrịa ozugbo enwere ike, ma ọ bụghị ya, a ga-agafe elu ọhụrụ ahụ ngwa ngwa, nke ga-emetụta mmetụta ọgwụgwọ.Ọgwụ ire ọkụ siri ike ịchịkwa ma ugbu a ejiri ọgwụgwọ mwepu corona dochie ya.

Ụkpụrụ na-arụ ọrụ nke ọgwụgwọ ịgbapụ corona bụ ịfefe ihe nkiri ahụ site na mpaghara voltaji, nke na-eme ka ọkpụkpụ oscillating dị elu na-amanye ikuku iji ionize.Mgbe ionization gasịrị, ion gas na-agbanye na fim ahụ iji mee ka ọ dịkwuo njọ.

N'otu oge ahụ, ikuku oxygen n'efu na-ejikọta ya na mkpụrụ ndụ oxygen na-emepụta ozone, na-emepụta ìgwè ndị polar n'elu, nke na-emecha mee ka esemokwu dị n'elu nke ihe nkiri plastik dị elu, nke na-eme ka adhesion inks na nrapado dị elu.