Izici namakhono okunyathelisa ngoyinki osekelwe emanzini wephepha elihlanganisiweibhokisi likashokoledi
Uyinki osekelwe emanzini uwumkhiqizo weyinki onobungani nemvelo oye wathandwa kakhulu eminyakeni yamuva njeibhokisi lekhekheUyini umehluko phakathi kweyinki esuselwe emanzini kanye neyinki yokunyathelisa evamile, futhi yiziphi izinto ezidinga ukunakwa lapho zisetshenziswa? Lapha, iMeibang izokuchazela ngokuningiliziwe.
Uyinki osekelwe emanzini usetshenziswe ekunyathelisweni kwephepha elihlanganisiwe isikhathi eside kwamanye amazwe kanye neminyaka engaphezu kwengu-20 ekhaya. Ukunyatheliswa kwephepha elihlanganisiwe kuthuthukiswe kusukela ekunyathelisweni kwe-lead (ukunyathelisa okusizayo), ukunyatheliswa kwe-offset (ukunyatheliswa kwe-offset) kanye nokunyatheliswa kwamanzi okugezwayo epuletini lerabha kuya ekunyathelisweni kweyinki okusetshenziswa emanzini okuguquguqukayo kwanamuhla. Uyinki osekelwe emanzini okuguquguqukayo uphinde wathuthuka kusukela ochungechungeni lwe-resin olushintshiwe lwe-rosin-maleic acid (ibanga eliphansi) kuya ochungechungeni lwe-resin ye-acrylic (ibanga eliphezulu). Ipuleti lokunyathelisa nalo lishintsha kusukela epuletini lerabha ukuya epuletini le-resin. Umshini wokunyathelisa uphinde wathuthuka kancane kancane kusukela ekunyathelisweni kombala owodwa noma imibala emibili enama-roller amakhulu kuya emishinini yokunyathelisa ye-FLEXO enemibala emithathu noma emine.
Ukwakheka kanye nezici zama-inki asekelwe emanzini kufana nokwama-inki ajwayelekile okunyathelisa. Ama-inki asekelwe emanzini avame ukwakhiwa ama-colorant, ama-binder, ama-auxiliaries kanye nezinye izingxenye. Ama-colorant ayi-colorant e-inki asekelwe emanzini, anikeza i-inki umbala othize. Ukuze kwenziwe umbono ukhanye ekunyatheliseni kwe-flexographic, ama-colorant ngokuvamile asebenzisa ama-pigment anokuqina okuhle kwamakhemikhali kanye namandla aphezulu okufaka imibala; I-binder iqukethe amanzi, i-resin, ama-amine compounds kanye nezinye izinyibilikisi eziphilayo. I-resin iyisakhi esibaluleke kakhulu kuma-inki asekelwe emanzini. I-resin ye-acrylic encibilikayo emanzini ivame ukusetshenziswa. Isakhi se-binder sithinta ngqo umsebenzi wokunamathela, isivinini sokomisa, ukusebenza kokunganamatheli, njll. kwe-inki, futhi sithinta nokugqwala kanye nokudluliswa kwe-inki ye-gloss. Ama-amine compounds agcina kakhulu inani le-alkaline PH le-inki esekelwe emanzini, ukuze i-acrylic resin ikwazi ukunikeza umphumela wokunyathelisa ongcono. Amanzi noma ezinye izinyibilikisi eziphilayo ziyi-resin ezincibilikisiwe kakhulu, Lungisa i-viscosity kanye nesivinini sokomisa se-inki; Ama-ejenti asizayo afaka phakathi: i-defoamer, i-blocker, i-stabilizer, i-diluent, njll.
Njengoba uyinki osekelwe emanzini uyinhlanganisela yensipho, kulula ukukhiqiza amabhamuza asetshenziswayo, ngakho-ke uwoyela we-silicone kufanele wengezwe njengesihlanzi sokuhlanza ukuze kuvinjelwe futhi kuqedwe amabhamuza, futhi kuthuthukiswe ukusebenza kokudluliselwa kweyinki. Ama-blocker asetshenziselwa ukuvimbela isivinini sokomisa uyinki osekelwe emanzini, ukuvimbela uyinki ukuthi ingomi emqulwini we-anilox nokunciphisa i-paste. Isiqinisi singalungisa inani le-PH loyinki, futhi singasetshenziswa njengesihlanzi ukuze kuncishiswe ukuthamba kweyinki. Isihlanzi sisetshenziselwa ukunciphisa umbala weyinki osekelwe emanzini, futhi singasetshenziswa njengesikhanyisi ukuze kuthuthukiswe ukukhanya kweyinki osekelwe emanzini. Ngaphezu kwalokho, kufanele kufakwe i-wax ethile kuyinki osekelwe emanzini ukuze kwandiswe ukumelana kwayo nokuguguleka.
Uyinki osekelwe emanzini ungaxutshwa namanzi ngaphambi kokuba wome. Uma uyinki womile, ngeke usancibilika emanzini nakuyinki. Ngakho-ke, uyinki osekelwe emanzini kumele uvuselelwe ngokuphelele ngaphambi kokusetshenziswa ukuze kugcinwe ukwakheka kweyinki kufana. Uma ungeza uyinki, uma uyinki osele ethangini loyinki uqukethe ukungcola, kufanele uhlungwe kuqala, bese usetshenziswa noyinki omusha. Uma uphrinta, ungavumeli uyinki wome ku-anilox roll ukuze ugweme ukuvimba umgodi wokuyinki. Ukuvimba ukudluliselwa kwe-inki okulinganiselwe kubangela ukungazinzile kokuphrinta. Ngesikhathi senqubo yokuphrinta, i-flexplate kufanele ihlale imanziswe yiyinki ukuze ugweme ukuvimba iphethini yombhalo epuletini lokuphrinta ngemva kokuba uyinki womile. Ngaphezu kwalokho, kutholakale ukuthi lapho i-viscosity yeyinki osekelwe emanzini iphakeme kancane, akufanele ukwengeza amanzi ngokunganaki ukuze ugweme ukuthinta ukuzinza kweyinki. Ungangeza inani elifanele le-stabilizer ukuze uyilungise.
Isikhathi sokuthunyelwe: Mashi-15-2023
