Labada UV (ultraviolet) iyo EB (electron beam) labaduba waxay isticmaalaan shucaaca korantada, kaas oo ka duwan IR (infrared) daaweynta kulaylka. Inkasta oo UV (Ultra Violet) iyo EB (Electron Beam) ay leeyihiin mawjadaha dhaadheer ee kala duwan, labaduba waxay keeni karaan isku-darka kiimikaad ee dareemayaasha khadka, ie, iskutallaabta-molecular-sare, taasoo keenta bogsiin degdeg ah.
Taas bedelkeeda, daawaynta IR waxay ku shaqeysaa kuleylinta khadka, taasoo soo saarta saameyno badan:
● Uumi-baxa qadar yar oo dareere ah ama qoyaan ah,
● Jilcinta lakabka khad iyo socodka oo kordha, kaas oo u ogolaanaya nuugista iyo qalajinta,
● oksaydhaynta dusha sare ee ay keento kulaylinta iyo xidhiidhka hawada,
● Qayb kiimikaad ah oo lagu daweeyo resins iyo saliidaha molecular ee kulaylka hoostiisa.
Tani waxay ka dhigaysaa daawaynta IR hannaan qallajin oo dhinacyo badan leh iyo qayb ahaan, halkii ay ka ahaan lahayd hal, habraac daaweyn oo dhammaystiran. Khadadka millatariga ku salaysan way kala duwan yihiin mar kale, maadaama daawayntoodu 100% lagu gaadho uumiga dareeraha oo ay caawiso socodka hawada.
Farqiga u dhexeeya UV iyo EB Curing
Daawaynta UV way ka duwan tahay daawaynta EB inta badan si qoto dheer oo laysula galo. Fallaadhaha UV waxay leeyihiin dhexgalka xaddidan; tusaale ahaan, lakab khad qaro ah oo ah 4-5 µm wuxuu u baahan yahay in si tartiib ah loo daaweeyo iftiinka UV ee tamarta sare leh. Laguma dawayn karo xawaare sare, sida 12,000-15,000 xaashi saacaddii marka la daabaco. Haddii kale, dusha sare ayaa laga yaabaa inay daaweyso halka lakabka gudaha uu ahaanayo dareere-sida ukun aan la karinin - taasoo keeni karta in dusha sare uu dib u dhalaalo oo uu dhejiyo.
Gelitaanka UV sidoo kale aad ayuu u kala duwan yahay iyadoo ku xiran midabka khad. Khadadka Magenta iyo Cyan si fudud ayaa loo galaa, laakiin khadadka Jaallaha iyo Madaw waxay nuugaan inta badan UV, iyo khad cad ayaa ka tarjumaysa UV badan. Sidaa darteed, nidaamka lakabka midabka ee daabacaadda ayaa si weyn u saameeya daaweynta UV. Haddii khadadka Madow ama Jaallaha leh ee nuugista UV sare ay kor saaran yihiin, khadyada casaanka ama buluugga ah ee hoose ayaa laga yaabaa inay si ku filan u bogsadaan. Taa beddelkeeda, dhigista khadadka cas ama buluuga ah ee sare iyo hoos jaalaha ama madow waxay kordhinaysaa suurtogalnimada in si buuxda loo bogsiiyo. Haddii kale, lakab kasta oo midab ah ayaa laga yaabaa inuu u baahdo daaweyn gooni ah.
EB-daawaynta, dhanka kale, ma laha kala duwanaansho midab-ku-tiirsan oo daaweyn ah waxayna leedahay dhexgalka aad u xoogan. Waxay gali kartaa warqad, balaastiig, iyo substrates kale, waxayna xitaa daawaysaa labada dhinac ee daabacaadda isku mar.
Tixgalin gaar ah
Khadadka cad ee hoosta ka hooseeya ayaa si gaar ah ugu adag daaweynta UV sababtoo ah waxay ka tarjumayaan iftiinka UV, laakiin daaweynta EB ma saameynayso tan. Tani waa hal faa'iido oo EB ku leedahay UV.
Si kastaba ha ahaatee, daawaynta EB waxay u baahan tahay in dusha sare uu ahaado jawi aan oksijiin lahayn si loo gaaro waxtarka daaweynta ku filan. Si ka duwan UV, kaas oo daweyn kara hawada, EB waa in ay kordhisaa awoodda hawada in ka badan toban laab si loo gaaro natiijooyin la mid ah-hawlgal aad u khatar ah oo u baahan taxadar badbaado adag. Xalka wax ku oolka ah waa in lagu buuxiyo qolka daaweynta nitrogen si looga saaro oksijiinta oo loo yareeyo faragelinta, taas oo u oggolaanaysa daaweyn waxtar leh.
Dhab ahaantii, warshadaha semiconductor, sawirka UV iyo soo-gaadhista ayaa inta badan lagu qabtaa nitrogen-buuxsan, qolal aan oksijiin lahayn isla sabab la mid ah.
Daaweynta EB sidaas darteed waxay ku habboon tahay oo keliya xaashida khafiifka ah ama filimada caagga ah ee daahan iyo daabacaadda codsiyada. Kuma haboona saxarada xaashida ah ee leh silsiladaha farsamada iyo xajinta. Daawaynta UV, si ka duwan, waxaa lagu shaqayn karaa hawada waana wax aad waxtar u leh, in kasta oo daawaynta UV-la'aanta ogsijiinta aan si dhif ah loo isticmaalin daabacaadda ama codsiyada dahaadhka maanta.
Waqtiga boostada: Seb-09-2025
