Izici namakhono okuphrinta kayinki osuselwe emanzini wephepha likathayelaibhokisi likashokoledi
Uyinki osuselwe emanzini uwumkhiqizo oyinki ohambisana nemvelo othole ukunakwa kabanzi eminyakeni yamuvaibhokisi lekhekhe. Uyini umehluko phakathi kukayinki osekelwe emanzini noyinki ovamile wokunyathelisa, futhi yimaphi amaphuzu adinga ukunakwa ekusetshenzisweni? Lapha, u-Meibang uzokuchazela ngokuningiliziwe.
Uyinki osuselwe emanzini usetshenziselwe ukuphrinta iphepha likathayela isikhathi eside phesheya futhi iminyaka engaphezu kwengama-20 ekhaya. Ukuphrinta iphepha likathayela kuthuthukile kusukela ekuphrinteni komthofu (ukuphrinta kwe-relief), ukuphrinta kwe-offset (ukuphrinta kwe-offset) kanye nokuphrinta kwepuleti lerabha lamanzi okuwasheka kuye ekuphrinteni kwanamuhla kukayinki ovumelana nezimo wamanzi. Uyinki osekelwe emanzini okhululekile uthuthukile futhi kusukela kuchungechunge lweresin eguquguqukayo ye-rosin-maleic acid (ibanga eliphansi) ukuya kuchungechunge lwe-acrylic resin (ibanga eliphezulu). Ipuleti lokuphrinta nalo lisuka kupuleti lerabha liye kupuleti le-resin. Umshini wokunyathelisa nawo uye wathuthuka kancane kancane usuka emshinini wokunyathelisa wombala owodwa noma onemibala emibili enamarola amakhulu ukuya emishinini yokunyathelisa ye-FLEXO yemibala emithathu noma emine.
Ukwakheka kanye nezici zama-inki asekelwe emanzini ziyafana neziyinki zokuphrinta ezijwayelekile. Ama-inki asekelwe emanzini ngokuvamile akhiwa ama-colorants, ama-binder, ama-axiliary nezinye izingxenye. Ama-colorants ayimibala kayinki osuselwe emanzini, enikeza uyinki umbala othize. Ukuze wenze okubonakalayo kukhanye ekuphrinteni kwe-flexographic, ama-colorants ngokuvamile asebenzisa ama-pigments ngokuzinza okuhle kwamakhemikhali namandla aphezulu ombala; I-binder iqukethe amanzi, i-resin, i-amine compounds nezinye izincibilikisi eziphilayo. I-resin iyingxenye ebaluleke kakhulu kumayinki asekelwe emanzini. I-resin ye-acrylic encibilikayo emanzini ivame ukusetshenziswa. Ingxenye yokuhlanganisa ithinta ngokuqondile umsebenzi wokunamathela, isivinini sokumisa, ukusebenza okunqanda ukunamathela, njll. kayinki, futhi iphinde ithinte isicwebezelisi nokudluliswa kukayinki. Izinhlanganisela ze-amine ikakhulukazi zigcina inani le-alkaline elingu-PH likayinki osuselwe emanzini, ukuze inhlaka ye-acrylic inikeze umphumela wokuphrinta ongcono. Amanzi noma ezinye izincibilikisi eziphilayo ngokuyinhloko ziyizinhlayiya ezincibilikisiwe, Lungisa i-viscosity kanye nesivinini sokumisa sikayinki; Ama-agent asizayo ikakhulukazi afaka: i-defoamer, i-blocker, i-stabilizer, i-diluent, njll.
Njengoba uyinki osuselwe emanzini ukwakhiwa kwensipho, kulula ukukhiqiza amabhamuza asetshenziswayo, ngakho uwoyela we-silicone kufanele wengezwe njenge-defoamer ukuze uvimbele futhi uqede amabhamuza, futhi uthuthukise ukusebenza kokudlulisela kukayinki. Ama-blocker asetshenziselwa ukuvimbela ijubane lokumisa likayinki osekelwe emanzini, ukuvimbela uyinki ukuthi wome ku-anilox roll futhi unciphise ukunamathisela. I-stabilizer ingalungisa inani elingu-PH likayinki, futhi ingasetshenziswa njenge-diluent ukunciphisa i-viscosity kayinki. I-diluent isetshenziselwa ukunciphisa umbala we-inki osekelwe emanzini, futhi ingasetshenziswa njengesikhanyisi ukuthuthukisa ukugqama kukayinki osekelwe emanzini. Ngaphezu kwalokho, enye i-wax kufanele yengezwe kuyinki osekelwe emanzini ukuze kwandiswe ukumelana kwayo nokugqoka.
Uyinki osuselwe emanzini ungaxutshwa namanzi ngaphambi kokoma. Uma uyinki womile, ngeke usancibilika emanzini nakuyinki. Ngakho-ke, uyinki osuselwe emanzini kufanele ushukunyiswe ngokugcwele ngaphambi kokusetshenziswa ukuze ugcine umfaniswano wokwakheka kweyinki. Uma wengeza uyinki, uma uyinki oyinsalela ethangini likayinki uqukethe ukungcola, kufanele uhlungwe kuqala, bese usetshenziswa ngoyinki omusha. Uma uphrinta, ungavumeli uyinki ome kuroli ye-anilox ukuze ugweme ukuvimba imbobo kayinki. Ukuvimbela ukudluliswa kwenani likayinki kubangela ukungazinzi kokuphrinta. Phakathi nenqubo yokunyathelisa, i-flexplate kufanele ihlale imanziswa yi-inki ukuze igweme ukuvimba iphethini yombhalo epuleti lokuphrinta ngemva kokuba uyinki usomile. Ngaphezu kwalokho, kutholakala ukuthi uma i-viscosity ye-inki esekelwe emanzini iphakeme kancane, akufaneleki ukwengeza amanzi ngokunganaki ukugwema ukuthikameza ukuzinza kweyinki. Ungakwazi ukwengeza inani elifanele lesiqinisi ukuze usilungise.
Isikhathi sokuthumela: Mar-15-2023
