Isano n'itandukaniro riri hagati yo kuvura irangi rya UV na EB

UV (ultraviolet) na EB (electron beam) byombi bikoresha imirasire ya electromagnetic, itandukanye na IR (infrared) ubushyuhe. Nubwo UV (Ultra Violet) na EB (Electron Beam) bifite uburebure butandukanye, byombi bishobora gutera ubwiyongere bw'ibinyabutabire mu byuma bitanga ubwiza, ni ukuvuga, guhuza cyane kw'amaseli, bigatuma habaho ubwiyongere bw'izuba ako kanya.

Mu buryo bunyuranye, IR curing ikora ikoresheje gushyushya wino, igatanga ingaruka nyinshi:

● Guhumeka k'umushongi muto cyangwa ubushuhe,

● Koroshya urwego rw'iwino no kwiyongera k'umuvuduko w'amazi, bituma inyurwa kandi ikamanukira,

● Oxidation y'ubuso iterwa no gushyushya no gukorana n'umwuka,

● Gutunganya igice cy'imiti ya resins n'amavuta afite molekile nyinshi mu gihe cyo gushyushya.

Ibi bituma IR processing iba uburyo bwo kumisha ibintu mu buryo butandukanye kandi igice, aho kuba uburyo bumwe bwo kumisha ibintu mu buryo bwuzuye. Wino zishingiye ku solvent ziratandukanye, kuko solvent yazo igerwaho 100% binyuze mu guhumeka kw'ibintu bishongeshejwe n'umwuka utemba.

Itandukaniro riri hagati yo kuvura UV na EB

Gupima UV bitandukanye no gupima EB ahanini mu buryo bwinjira. Imirasire ya UV ifite ubushobozi bwo kwinjira mu buryo buke; urugero, urwego rw'iwino rufite ubugari bwa µm 4–5 rusaba gupima buhoro buhoro hamwe n'urumuri rwa UV rufite ingufu nyinshi. Ntirushobora kuvurwa ku muvuduko mwinshi, nko ku mpapuro 12.000–15.000 ku isaha mu icapiro rya offset. Bitabaye ibyo, ubuso bushobora kuvurwa mu gihe urwego rw'imbere ruguma ari amazi—nk'igi ritetse nabi—bishobora gutuma ubuso bwongera gushonga no gufatana.

Kwinjira kwa UV nabyo biratandukanye cyane bitewe n'ibara rya wino. Wino ya Magenta na Cyan yoroshye kwinjiramo, ariko wino y'umuhondo n'umukara yinjiza UV nyinshi, kandi wino y'umweru igaragaza UV nyinshi. Kubwibyo, uburyo amabara ashyirwa mu icapiro agira ingaruka zikomeye ku gushonga kwa UV. Iyo wino y'umukara cyangwa umuhondo ifite UV nyinshi iri hejuru, wino y'umutuku cyangwa umukara iri munsi ishobora gushonga neza. Ku rundi ruhande, gushyira wino y'umutuku cyangwa umukara hejuru n'umuhondo cyangwa umukara munsi byongera amahirwe yo gushonga burundu. Bitabaye ibyo, buri bara rishobora gusaba gushonga ukwaryo.

Ku rundi ruhande, EB curing nta tandukaniro ishingiye ku ibara ry’umuti ikoresha kandi ifite ubushobozi bwo kwinjira cyane. Ishobora kwinjira mu mpapuro, pulasitiki, n’ibindi bice, ndetse ikanakiza impande zombi z’icyapa icyarimwe.

Ibitekerezo byihariye

Irangi ry'umweru riri munsi y'urumuri riragoye cyane mu gupima UV kuko rigaragaza urumuri rwa UV, ariko gupima EB ntabwo bihinduka. Iyi ni imwe mu nyungu za EB kuruta UV.

Ariko, gukaraba EB bisaba ko ubuso bw'aho hantu hatagira ogisijeni kugira ngo habeho imikorere ihagije yo gukaraba. Bitandukanye na UV, ishobora gukaraba mu kirere, EB igomba kongera imbaraga zirenze icumi mu kirere kugira ngo igere ku musaruro nk'uwo—igikorwa giteje akaga cyane gisaba ingamba zikomeye zo kwirinda. Umuti ufatika ni ukuzuza icyumba cyo gukarabamo azote kugira ngo ukureho ogisijeni no kugabanya ingaruka mbi, bigatuma habaho imikorere myiza yo gukaraba.

Mu by’ukuri, mu nganda zikora ibikoresho bya semiconductor, gupima no kwerekana imirasire ya UV bikunze gukorwa mu byumba byuzuye azote, bidafite ogisijeni kubera iyo mpamvu.

Bityo, EB curing ikwiriye gusa impapuro nto cyangwa filime za pulasitiki mu gusiga no gucapa. Ntabwo ikwiriye imashini zikoresha sheet-feeded presses zifite iminyururu n'udupira two gufata. Gusiga UV, mu buryo bunyuranye, bishobora gukoreshwa mu kirere kandi ni ingirakamaro kurushaho, nubwo gusiga UV idafite ogisijeni idakoreshwa cyane mu gucapa cyangwa gusiga muri iki gihe.