Dalilai da mafita na faɗuwa (discoloration) na samfuran da aka buga

Discoloration yayin aiwatar da bushewar tawada

Yayin aikin bugu, sabon launin tawada da aka buga ya fi duhu idan aka kwatanta da busasshen launin tawada. Bayan wani lokaci, launin tawada zai zama haske bayan bugu ya bushe; Wannan ba matsala ba ne kasancewar tawada yana da juriya ga bushewar haske ko canza launi, amma galibi saboda canza launin da aka samu ta hanyar shigar da oxidation na fim yayin aikin bushewa. Tawadan taimako galibi yana shiga ya bushe, kuma layin tawada na samfurin da aka buga daga injin bugu yana da ɗan kauri. A wannan lokacin, yana ɗaukar ɗan lokaci don shigarwa da fim ɗin iskar shaka don bushewa mara kyau.

Tawada kanta ba ta jure wa haske da fadewa

Fashewar tawada da canza launin ba makawa ne lokacin da aka fallasa su ga haske, kuma duk tawada za su fuskanci nau'i daban-daban na dushewa da canza launin bayan bayyanar haske. Haske mai launin tawada yana bushewa kuma yana canza launi sosai bayan tsawan lokaci ga haske. Yellow, crystal ja, da kore suna shuɗewa da sauri, yayin da cyan, shuɗi, da baki suna faɗuwa a hankali. A cikin aiki mai amfani, lokacin haɗuwa tawada, yana da kyau a zabi tawada tare da tsayayyar haske mai kyau. Lokacin daidaita launuka masu haske, ya kamata a biya hankali ga juriya na haske na tawada bayan dilution. Lokacin haɗa tawada, daidaiton juriyar haske tsakanin launukan tawada da yawa ya kamata kuma a yi la'akari da shi.

Tasirin acidity da alkalinity na takarda akan faɗuwar tawada da canza launin

Gaba ɗaya, takarda yana da rauni alkaline. Madaidaicin ƙimar pH na takarda shine 7, wanda shine tsaka tsaki. Saboda buƙatar ƙara sinadarai irin su caustic soda (NaOH), sulfides, da chlorine gas a lokacin aikin takarda, magani mara kyau a lokacin ɓangaren litattafan almara da takarda zai iya sa takarda ta zama acidic ko alkaline.

Alkalinity na takarda ya fito ne daga tsarin yin takarda da kansa, kuma wasu ana haifar da su ta hanyar adhesives masu ɗauke da sinadarai na alkaline da ake amfani da su wajen samar da ɗauri. Idan aka yi amfani da kumfa alkali da sauran mannen alkaline, abubuwan alkaline za su shiga cikin filayen takarda kuma su mayar da martani ta hanyar sinadarai tare da barbashi na tawada a saman takarda, suna sa su shuɗe kuma su canza launi. Lokacin zabar albarkatun kasa da adhesives, ya zama dole a fara nazarin abubuwan da ke cikin jiki da sinadarai na manne, takarda, da tasirin acidity da alkalinity akan tawada, takarda, foil na aluminum electrochemical, foda na zinariya, foda na azurfa, da lamination.

Zazzabi ya haifar da canza launi da canza launi

Wasu alamomin kasuwanci da marufi da kayan ado suna maƙala a kan injinan shinkafar lantarki, injin dafa abinci na matsa lamba, murhu na lantarki, da kayan dafa abinci, kuma tawada da sauri ya bushe kuma ya canza launin ƙarƙashin yanayin zafi. Juriyar zafin tawada yana kusa da digiri 120 ma'aunin celcius. Injin buga bugu da sauran injunan bugu ba sa aiki cikin sauri yayin aiki, kuma tawada da na'urorin bugu, da farantin farantin tawada da farantin bugu suna haifar da zafi saboda tashin hankali mai saurin gaske. A wannan lokacin, tawada kuma yana haifar da zafi.

Rarraba launi da aka haifar ta hanyar layin launi mara kyau a cikin bugu

Jerin launi da aka saba amfani da su don injin monochrome masu launi huɗu sune: Y, M, C, BK. Na'ura mai launi guda huɗu tana da jerin launi na baya: BK, C, M, Y, wanda ke ƙayyade abin da tawada za a buga da farko sannan kuma, wanda zai iya yin tasiri ga digewa da canza launin tawada.

Lokacin da ake tsara jerin launi na bugu, launuka masu haske da tawada masu saurin shuɗewa da canza launin yakamata a fara bugawa, sannan a buga launuka masu duhu daga baya don hana shuɗewa da canza launin.

Rarrabewa da canza launin da ke haifar da rashin amfani da busasshen mai

Adadin man bushewar ja da fari mai bushewa da aka saka a cikin tawada kada ya wuce kashi 5% na adadin tawada, kusan kashi 3%. Man bushewa yana da tasiri mai ƙarfi a cikin tawada kuma yana haifar da zafi. Idan adadin man busar da shi ya yi yawa, zai sa tawada ya yi shuɗe kuma ya canza launi.

Idan kuna da wasu buƙatun Marufi, zaku iya tuntuɓar mu. A matsayin mai ƙera marufi mai sassauƙa sama da shekaru 20, za mu samar da mafita na marufi daidai gwargwadon buƙatun samfuran ku da kasafin kuɗi.

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Lokacin aikawa: Oktoba-14-2023