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<\/p>\nSerigrafi veya ekran bask\u0131s\u0131 olarak da bilinen serigrafi, delikli bask\u0131ya aittir. Serigrafi bask\u0131 plakas\u0131 g\u00f6zenekli bir \u015fablon, do\u011frudan fotopolimer veya ekrana yerle\u015ftirilen grafiklerden yap\u0131lm\u0131\u015f filmdir, kau\u00e7uk bir silecekle bask\u0131 yapar, b\u00f6ylece m\u00fcrekkep ekran grafik a\u00e7\u0131kl\u0131\u011f\u0131ndan a\u011f\u0131n alt\u0131ndaki alt tabakaya bask\u0131 s\u0131z\u0131nt\u0131s\u0131n\u0131n bir par\u00e7as\u0131 olur. Ekran \u015fablonu ipek, naylon, polyester veya paslanmaz \u00e7elik tel, bak\u0131r tel, ekran \u00e7er\u00e7evesi \u00fczerinde gergin nikel teldir, b\u00f6ylece gerginli\u011fi sabitlenir ve yap\u0131l\u0131r.<\/p>\n
1.2.1 serigrafi bask\u0131 kal\u0131b\u0131 haz\u0131rlama
\nSerigrafi bask\u0131, bir serigrafi bask\u0131 kal\u0131b\u0131n\u0131n haz\u0131rlanmas\u0131yla ba\u015flar. Serigrafi bask\u0131 \u00f6ncesi bask\u0131 plakas\u0131 \u00fc\u00e7 a\u015famadan ge\u00e7mi\u015ftir: manuel plaka yap\u0131m\u0131, foto\u011frafik plaka yap\u0131m\u0131 ve bilgisayarl\u0131 do\u011frudan plaka yap\u0131m\u0131. Manuel kli\u015fe, analog kli\u015fe i\u00e7in foto\u011frafik kli\u015fe, dijital kli\u015fe i\u00e7in bilgisayarl\u0131 direkt kli\u015fe. Dijital plakan\u0131n serigrafi bask\u0131ya uygulanmas\u0131, bask\u0131 kalitesini art\u0131rmak, y\u00fcksek hassasiyetli \u00fcr\u00fcnler basmak i\u00e7in iyi bir ko\u015ful sa\u011flar. Serigrafi kli\u015fe \u00fcretim y\u00f6nteminin do\u011frudan y\u00f6ntemi, dolayl\u0131 y\u00f6ntemi ve bilgisayar do\u011frudan kli\u015fe y\u00f6ntemi olmak \u00fczere \u00fc\u00e7 y\u00f6ntemi vard\u0131r. Do\u011frudan y\u00f6ntem, do\u011frudan kaplanm\u0131\u015f serigrafi fotopolimer plakas\u0131nda, dolayl\u0131 y\u00f6ntem serigrafi yap\u0131\u015ft\u0131rma serigrafi fotopolimer film plakas\u0131nda, dijital bilgisayar do\u011frudan plakas\u0131 da serigrafi fotopolimerinde kaplanmal\u0131d\u0131r. Aradaki fark, do\u011frudan y\u00f6ntem ve dolayl\u0131 y\u00f6ntemin \u00f6nce negatifin g\u00f6r\u00fcnt\u00fcleri ve metni ile foto\u011fraf filminden yap\u0131lmas\u0131 ve ard\u0131ndan bask\u0131 plakalar\u0131ndan yap\u0131lan pozlama, geli\u015ftirme ve dijital bilgisayar do\u011frudan plakas\u0131n\u0131n foto\u011fraf filmi gerektirmemesi, yaln\u0131zca ilk g\u00f6r\u00fcnt\u00fc ve metin bilgilerinin bilgisayara girilmesi ve ard\u0131ndan bilgisayarlar\u0131n kullan\u0131lmas\u0131d\u0131r. ekran plakas\u0131 \u00fczerine serigrafi bask\u0131l\u0131 fotopolimer ile kaplanm\u0131\u015ft\u0131r. Ayn\u0131 \u015fey, serigrafi fotopolimerini kullanmak i\u00e7in \u00fc\u00e7 plaka yap\u0131m y\u00f6ntemidir.<\/p>\n
(1) Serigrafi bask\u0131 fotopolimer
\nD\u00f6rt tip fotopolimer i\u00e7eren serigrafi bask\u0131 kal\u0131b\u0131: dikromat fotopolimer, alkolde \u00e7\u00f6z\u00fcn\u00fcr naylon fotopolimer, diazo fotopolimer ve stiren bazl\u0131 piridin tuzu fotopolimer.<\/p>\n
Dikromat fotopolimer. Fotopolimerin en eski kullan\u0131m\u0131, dikromat \u0131\u015f\u0131\u011fa duyarl\u0131 kullan\u0131m\u0131 ve serigrafi fotopolimer yapmak i\u00e7in kar\u0131\u015ft\u0131r\u0131lan baz\u0131 organik kolloidlerdir (jelatin, bal\u0131k tutkal\u0131, arap zamk\u0131, polivinil alkol, vb.). Ancak, sadece \u015fimdi kullan\u0131labilir, k\u0131sa \u00f6m\u00fcrl\u00fc, karanl\u0131k reaksiyon, d\u00fc\u015f\u00fck \u00e7\u00f6z\u00fcn\u00fcrl\u00fck, \u00f6zellikle krom tuzu toksisitesi, sadece insan sa\u011fl\u0131\u011f\u0131na zarar vermekle kalmaz, ayn\u0131 zamanda \u00e7evrenin ciddi kirlili\u011fi, bu y\u00fczden art\u0131k kullan\u0131lmamaktad\u0131r.<\/p>\n
\u2461 alkolde \u00e7\u00f6z\u00fcnen naylon fotopolimer. Fotoba\u015flat\u0131c\u0131lar i\u00e7in daha fazla benzoin ve t\u00fcrevleri, karanl\u0131k reaksiyon ve bu tip fotopolimer plaka filmden \u00e7\u0131kar\u0131lamaz, ekran tekrar kullan\u0131lamaz ve art\u0131k kullan\u0131lmamaktad\u0131r.<\/p>\n
\u2462 diazo fotopolimer. Polivinil alkol ve suda \u00e7\u00f6z\u00fcnmeyen polimer em\u00fclsiyonu (polivinil asetat em\u00fclsiyonu, etilen-propilen em\u00fclsiyonu, vb.), diazo bile\u015fikleri i\u00e7in hassasla\u015ft\u0131r\u0131c\u0131, yayg\u0131n olarak kullan\u0131lan \u00e7ift diazo tuzu, diazo re\u00e7inesi veya kompozit diazo re\u00e7inesi vb. Y\u00fcksek \u00e7\u00f6z\u00fcn\u00fcrl\u00fck, iyi \u00e7\u00f6z\u00fcn\u00fcrl\u00fck, h\u0131zl\u0131 hassasiyet ve a\u015f\u0131nma direnci, su direnci ve solvent direnci m\u00fckemmel oldu\u011fundan ve su geli\u015fiminin yan\u0131 s\u0131ra filmin \u00e7\u0131kar\u0131lmas\u0131 kolay oldu\u011fundan, en yayg\u0131n kullan\u0131lan serigrafi fotopolimeri haline gelmi\u015ftir.<\/p>\n
\u2463 Stirilpiridin fotopolimeri. SBQ fotopolimeri olarak da adland\u0131r\u0131l\u0131r, tek s\u0131v\u0131 tip serigrafi fotopolimeridir. Ultraviyole \u0131\u015f\u0131nlama ile stiril piridin tuzu fotodimerizasyon reaksiyonunun kullan\u0131lmas\u0131d\u0131r, bu da su dimerinde \u00e7\u00f6z\u00fcnmeyen d\u00f6rt \u00fcyeli bir halka yap\u0131s\u0131, grafik olu\u015fumundan sonra ekranda kalmak i\u00e7in su geli\u015fimi ile sonu\u00e7lan\u0131r.SBQ fotopolimer termal stabilite, y\u00fcksek hassasiyet, a\u011f\u0131r nitrojen fotopolimerden 4 ila 5 kat daha y\u00fcksek, 315 ~ 430nm aral\u0131\u011f\u0131nda \u0131\u015f\u0131\u011fa duyarl\u0131 spektrum, 370nm'deki en b\u00fcy\u00fck absorpsiyon zirvesi; y\u00fcksek \u00e7\u00f6z\u00fcn\u00fcrl\u00fck, g\u00f6r\u00fcnt\u00fc netli\u011fi, bask\u0131lar\u0131n y\u00fcksek kalitesi; Su geli\u015ftirme, iyi geli\u015ftirme performans\u0131; plaka filmi ve ekran yap\u0131\u015fma performans\u0131 iyidir, y\u00fcksek bask\u0131 direnci oran\u0131; at\u0131k plaka filminin filmi \u00e7\u0131karmas\u0131 kolayd\u0131r, ekran plakas\u0131n\u0131n geri d\u00f6n\u00fc\u015f\u00fcm\u00fc ve yeniden kullan\u0131m\u0131 i\u00e7in elveri\u015flidir. Ana dezavantaj\u0131, fiyat\u0131n daha pahal\u0131 olmas\u0131 ve kullan\u0131m\u0131n yayg\u0131nla\u015fmas\u0131n\u0131 etkilemesidir.<\/p>\n
Serigrafi bask\u0131 plakas\u0131 i\u015flemi yapmak i\u00e7in serigrafi fotopolimer:<\/p>\n
Germe \u2192 fotopolimer kaplama \u2192 kurutma \u2192 pozlama \u2192 geli\u015ftirme \u2192 kurutma \u2192 plaka<\/p>\n
Ah\u015fap \u00e7er\u00e7evede veya al\u00fcminyum \u00e7er\u00e7evede belirli say\u0131da \u00f6rg\u00fc ekran (naylon, polyester, paslanmaz \u00e7elik, bak\u0131r, nikel tel \u00f6rg\u00fc vb.) Se\u00e7ecek, \u00e7er\u00e7eveye gergin \u00f6rg\u00fc yap\u0131\u015ft\u0131r\u0131c\u0131s\u0131 ile belirli bir gerginli\u011fe sahip olacak. Ve daha sonra fotopolimer ile kaplan\u0131r, (40 \u00b1 5) \u2103 f\u0131r\u0131nda kurutulur, genellikle 2 ila 3 kez kaplan\u0131r. Negatifin \u00fczerine bir grafik, vakum emme vard\u0131r, \u00e7\u00fcnk\u00fc serigrafi fotopolimer yakla\u015f\u0131k 400nm ultraviyole \u0131\u015f\u0131\u011f\u0131 emer, plaka yap\u0131m\u0131 floresan lambalar\u0131n kullan\u0131m\u0131 veya metal halide lamba maruziyeti, su geli\u015ftirme, kurutma, plaka onar\u0131m\u0131, bask\u0131 plakalar\u0131ndan yap\u0131lm\u0131\u015ft\u0131r. Serigrafi bask\u0131 plakas\u0131 kullan\u0131ld\u0131ktan sonra, s\u0131yr\u0131l\u0131p geri d\u00f6n\u00fc\u015ft\u00fcr\u00fclebilir ve fotopolimer s\u0131y\u0131rma \u00e7\u00f6zeltisi ile \u00e7\u0131kar\u0131ld\u0131ktan sonra ekran yeniden kullan\u0131labilir.<\/p>\n
(2) Serigrafi bask\u0131 foto\u011fraf filmi
\nFoto\u011fraf filmi veya filmi olarak da bilinen foto\u011fraf filmi, polyester tabaka taban\u0131na e\u015fit \u015fekilde kaplanm\u0131\u015f serigrafi foto\u011fraf yap\u0131\u015ft\u0131r\u0131c\u0131s\u0131, kurutma ve sarma depolamadan sonra, yani a\u00e7\u0131k ve kullan\u0131ma haz\u0131r, zaman kazand\u0131ran ve h\u0131zl\u0131. Serigrafi fotopolimerize film plakas\u0131n\u0131n kullan\u0131m\u0131, serigrafi bask\u0131 y\u00fczeyinin p\u00fcr\u00fczs\u00fcz olmas\u0131n\u0131 sa\u011flayabilir ve ekran\u0131n kal\u0131nl\u0131\u011f\u0131n\u0131, hassasiyetini ve dayan\u0131kl\u0131l\u0131\u011f\u0131n\u0131 kolayca kontrol edebilir.<\/p>\n
<\/p>\n
Serigrafi foto\u011fraf filmi kli\u015fesi yap\u0131m s\u00fcreci:<\/p>\n
Germe \u2192 Foto\u011fraf filmi yap\u0131\u015ft\u0131rma \u2192 Kurutma \u2192 Pozlama \u2192 Geli\u015ftirme \u2192 Kurutma \u2192 Bask\u0131 plakas\u0131<\/p>\n
Serigrafi bilgisayar do\u011frudan g\u00f6r\u00fcnt\u00fcleme plakas\u0131 (CTS), ofset bask\u0131 ve fleksografik bask\u0131 ba\u015far\u0131s\u0131 alan\u0131nda bilgisayar do\u011frudan plaka teknolojisi (CTP) ile birlikte, serigrafi bask\u0131n\u0131n da geni\u015f kapsaml\u0131 bir etkisi olmu\u015ftur ve CTS'nin ortaya \u00e7\u0131k\u0131\u015f\u0131, bilgisayar taraf\u0131ndan giri\u015f g\u00f6r\u00fcnt\u00fcs\u00fcne ve metin \u00e7\u0131kt\u0131s\u0131na do\u011frudan serigrafi ekran plakas\u0131na, bir serigrafi bask\u0131 plakas\u0131 olu\u015fturmak i\u00e7in geli\u015ftirme s\u00fcrecidir. \u015eu anda CTS'yi ger\u00e7ekle\u015ftirmenin iki yolu vard\u0131r: m\u00fcrekkep p\u00fcsk\u00fcrtmeli do\u011frudan plaka (jet ekran\u0131) ve do\u011frudan pozlama plakas\u0131 (do\u011frudan \u0131\u015f\u0131k i\u015fleme, DLP).<\/p>\n
\u2460 M\u00fcrekkep p\u00fcsk\u00fcrtmeli do\u011frudan plaka yap\u0131m\u0131. Ekran, fotopolimer katman \u00fczerine p\u00fcsk\u00fcrt\u00fclen siyah m\u00fcrekkebi veya balmumunu bloke etmek i\u00e7in inkjet sistemi arac\u0131l\u0131\u011f\u0131yla fotopolimer ve kuru veya macun film ile kaplanacak, ultraviyole \u0131\u015f\u0131\u011fa maruz kalacak, p\u00fcsk\u00fcrt\u00fclmemi\u015f m\u00fcrekkep veya balmumu yeri \u0131\u015f\u0131kla k\u00fcrlenmeyi g\u00f6recek, p\u00fcsk\u00fcrt\u00fclm\u00fc\u015f m\u00fcrekkep veya balmumu geli\u015fimin bir k\u0131sm\u0131 kald\u0131r\u0131ld\u0131, metin ile plakan\u0131n olu\u015fumu.<\/p>\n
\u2461 Do\u011frudan Pozlama Plakas\u0131 Yap\u0131m\u0131. Ekran plakas\u0131n\u0131 fotopolimer veya macun filmi kaplamak i\u00e7in ayn\u0131 ihtiya\u00e7, bilgisayar kontroll\u00fc UV \u0131\u015f\u0131k kayna\u011f\u0131 arac\u0131l\u0131\u011f\u0131yla do\u011frudan ekran plakas\u0131na maruz kalma, fotopolimer \u00e7apraz ba\u011flanma k\u00fcrlenmesinin \u0131\u015f\u0131k k\u0131sm\u0131n\u0131 g\u00f6rme, geli\u015fme k\u0131sm\u0131n\u0131n \u0131\u015f\u0131\u011f\u0131n\u0131 g\u00f6rmeme s\u0131v\u0131n\u0131n geli\u015fimi kald\u0131r\u0131l\u0131r, metin ile plakan\u0131n olu\u015fumu.<\/p>\n
\u015eimdi CTS, fotopolimer kaplamas\u0131z serigrafi bask\u0131 plakas\u0131 i\u00e7in daha da geli\u015ftirilmi\u015ftir, yani bilgisayar arac\u0131l\u0131\u011f\u0131yla do\u011frudan bir t\u00fcr kaplama p\u00fcsk\u00fcrt\u00fcl\u00fcr, \u015fablon \u00fczerinde g\u00f6r\u00fcnt\u00fc olu\u015fumundan sonra, plaka geli\u015ftirmeden sonra ekran plakas\u0131 teknolojisi ile elde edilebilir. Plaka nokta a\u00e7\u0131s\u0131, p\u00fcsk\u00fcrtme malzemesi kal\u0131nl\u0131\u011f\u0131, yo\u011funlu\u011fu, pozlama s\u00fcresi vb. bilgisayar taraf\u0131ndan orijinal g\u00f6r\u00fcnt\u00fc tarama g\u00f6r\u00fcnt\u00fclemesine, do\u011frudan tarama plakas\u0131 yap\u0131m\u0131na ve ard\u0131ndan reaksiyona girmemi\u015f kimyasal malzemeleri y\u0131kamak i\u00e7in suya g\u00f6re ayarlan\u0131r ve bask\u0131 plakalar\u0131ndan yap\u0131l\u0131r. \u015eablon plakas\u0131 y\u00f6ntemi \u00fczerindeki bu do\u011frudan g\u00f6r\u00fcnt\u00fcleme, serigrafi bask\u0131n\u0131n gelecekteki y\u00f6n\u00fcd\u00fcr.<\/p>\n
Buna ek olarak, do\u011frudan g\u00f6r\u00fcnt\u00fcleme plakas\u0131 yapma y\u00f6ntemi vard\u0131r, do\u011frudan bilgisayar lazer tarama a\u015f\u0131nd\u0131rma g\u00f6r\u00fcnt\u00fclemesinde \u00f6zel bir metal ala\u015f\u0131ml\u0131 filmdedir, bu plaka yapma y\u00f6nteminin \u015fablonda deformasyonu yoktur, hizalama yar\u0131 hassasiyeti, y\u00fcksek bask\u0131 do\u011frulu\u011fu, uygulamas\u0131 serigrafi y\u00fcksek kaliteli bask\u0131lar yapar.<\/p>\n
Do\u011frudan dijital g\u00f6r\u00fcnt\u00fcleme plakas\u0131n\u0131n (CTS) bir\u00e7ok avantaj\u0131 vard\u0131r, teknolojik olarak daha geli\u015fmi\u015ftir, bir ad\u0131m tamamen g\u00fcm\u00fc\u015f tuz filmi kullan\u0131lmadan bir bask\u0131 plakas\u0131 haline getirilebilir, bu da y\u0131kama kimyasallar\u0131n\u0131n neden oldu\u011fu \u00e7evre kirlili\u011fini \u00f6nler. Bilgisayar destekli tasar\u0131m verileri do\u011frudan \u015fablona aktar\u0131labilir, ara fotografik ad\u0131mlar yoktur, b\u00f6ylece g\u00f6r\u00fcnt\u00fcn\u00fcn netli\u011fi daha iyi ve kontrol\u00fc daha kolayd\u0131r. Plaka basit, h\u0131zl\u0131, kirlili\u011fi \u00f6nleyen, plaka ve bask\u0131 \u00f6zelliklerinin kalitesini art\u0131ran bilgisayar do\u011frudan plakas\u0131n\u0131n kullan\u0131m\u0131, g\u00fcn\u00fcm\u00fcz\u00fcn en son plaka y\u00f6nteminin fotopolimer serigrafi plakas\u0131d\u0131r, g\u00f6r\u00fcn\u00fcm\u00fc ve geleneksel serigrafi bask\u0131 plakas\u0131 i\u015flemine uygulanmas\u0131 temel de\u011fi\u015fiklikleri beraberinde getirmi\u015ftir, serigrafi plakas\u0131 teknolojisi dijitalle\u015fmenin yeni bir a\u015famas\u0131na girmi\u015ftir.<\/p>\n
1.2.2 Serigrafi bask\u0131n\u0131n \u00f6zellikleri
\nSerigrafi bask\u0131n\u0131n temel \u00f6zellikleri a\u015fa\u011f\u0131daki gibidir.<\/p>\n
\u2460 Kal\u0131n m\u00fcrekkep katman\u0131. Genel ofset, tipo, fleksografik m\u00fcrekkep kal\u0131nl\u0131\u011f\u0131 sadece birka\u00e7 mikron, grav\u00fcr sadece 9 ~ 20\u03bcm, serigrafi m\u00fcrekkep kal\u0131nl\u0131\u011f\u0131 ise 30 ~ 100\u03bcm'ye kadar, bu nedenle m\u00fcrekkep kaplama yetene\u011fi \u00f6zellikle g\u00fc\u00e7l\u00fcd\u00fcr.<\/p>\n
\u2461 \u00e7e\u015fitli m\u00fcrekkep bask\u0131s\u0131 kullanabilir. Serigrafi, solvent bazl\u0131, su bazl\u0131, \u0131s\u0131yla sertle\u015fen, \u0131\u015f\u0131kla sertle\u015fen, elektron \u0131\u015f\u0131n\u0131yla sertle\u015fen ve di\u011fer m\u00fcrekkep t\u00fcrleri, u\u00e7ucu kurutma, penetrasyon kurutma, oksidasyon polimerizasyon kurutma, \u0131s\u0131yla sertle\u015fen kurutma, \u0131\u015f\u0131kla sertle\u015fen kurutma, elektron \u0131\u015f\u0131n\u0131yla kurutma ve benzeri dahil olmak \u00fczere bask\u0131 m\u00fcrekkebi kurutma kullan\u0131labilir.<\/p>\n
\u2462 Plaka yumu\u015fakt\u0131r, bask\u0131 bas\u0131nc\u0131 k\u00fc\u00e7\u00fckt\u00fcr, \u00e7e\u015fitli alt tabakalara bas\u0131labilir. Serigrafi bask\u0131 plakas\u0131 yumu\u015fak ve esnektir, bu nedenle sadece ka\u011f\u0131t, film, tekstil ve di\u011fer yumu\u015fak malzemelere de\u011fil, ayn\u0131 zamanda metal, sert plastikler, seramikler ve do\u011frudan bask\u0131 gibi di\u011fer sert malzemelere de bas\u0131labilir, \u00e7\u00fcnk\u00fc serigrafi bask\u0131 bas\u0131nc\u0131 \u00e7ok k\u00fc\u00e7\u00fckt\u00fcr, bu nedenle cam gibi k\u0131r\u0131lgan malzemelere de bas\u0131labilir.<\/p>\n
\u2463 Alt tabakan\u0131n \u015fekli ve boyutu konusunda herhangi bir s\u0131n\u0131rlama yoktur. Serigrafi, \u00f6zel \u015fekilli kal\u0131planm\u0131\u015f nesneler (\u015fi\u015feler, bardaklar, end\u00fcstriyel par\u00e7alar vb.) ve \u00e7e\u015fitli d\u00fcz nesneler \u00fczerine bas\u0131labilir ve b\u00fcy\u00fck boyutlu reklamlar, arka planlar, bayraklar ve di\u011fer malzemelerin yan\u0131 s\u0131ra kal\u0131n film entegre devreler gibi ultra k\u00fc\u00e7\u00fck, ultra y\u00fcksek hassasiyetli malzemeler \u00fczerine de bask\u0131 yapabilir.<\/p>\n
Serigrafi bask\u0131n\u0131n yukar\u0131daki \u00f6zellikleri, ofset bask\u0131, tipo bask\u0131, flekso bask\u0131 ve grav\u00fcr bask\u0131n\u0131n zor oldu\u011fu durumlarda serigrafi bask\u0131 ile bask\u0131 yap\u0131lmas\u0131n\u0131 m\u00fcmk\u00fcn k\u0131lmaktad\u0131r. Serigrafi bask\u0131, \u015fekli, kal\u0131nl\u0131\u011f\u0131 ve boyutu ne olursa olsun ka\u011f\u0131t, karton, plastik, metal, ah\u015fap, cam, seramik, elyaf, kal\u0131n film ve di\u011fer malzemeler i\u00e7in hem elle \u00e7al\u0131\u015ft\u0131r\u0131lan hem de otomatik makine bask\u0131s\u0131 i\u00e7in kullan\u0131labilir, bu nedenle ambalajlama, dekorasyon, reklamc\u0131l\u0131k, bask\u0131l\u0131 devreler, elektronik bile\u015fenler ve benzeri alanlarda yayg\u0131n olarak kullan\u0131lmaktad\u0131r.<\/p>\n
![\"\"](\"https:\/\/longchangchemical.com\/wp-content\/uploads\/2024\/12\/UV-screen-printing-2.jpg\")
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Genellikle serigrafi m\u00fcrekkebinin \u00f6zellikleri a\u015fa\u011f\u0131daki gibi ifade edilebilir.<\/p>\n
\u2460 Viskozite. Bir \u00f6zelli\u011fin s\u0131v\u0131 ak\u0131\u015f\u0131n\u0131 durdurmakt\u0131r, e\u011fer s\u0131v\u0131 ak\u0131\u015f direnci viskozitesi \u00e7ok b\u00fcy\u00fckse, m\u00fcrekkebin ekrandan ge\u00e7mesi kolay de\u011fildir, bu da m\u00fcrekkep bask\u0131s\u0131 ile sonu\u00e7lan\u0131r; viskozite \u00e7ok d\u00fc\u015f\u00fckse, bask\u0131n\u0131n geni\u015flemesine neden olur, bask\u0131lar\u0131n netli\u011fini ve \u00e7\u00f6z\u00fcn\u00fcrl\u00fc\u011f\u00fcn\u00fc etkiler.<\/p>\n
Plastisite. M\u00fcrekkebin d\u0131\u015f kuvvetler taraf\u0131ndan deforme edilmesini ifade eder, ancak m\u00fcrekkep plastisitesinin do\u011fas\u0131 bask\u0131 do\u011frulu\u011funu art\u0131rmaya elveri\u015fli olmadan \u00f6nce deformasyonunu korur.<\/p>\n
Tiksotropi. Kal\u0131nla\u015fma, viskozite, inceltme, viskozite ve daha k\u00fc\u00e7\u00fck hale geldikten sonra kar\u0131\u015ft\u0131r\u0131lan m\u00fcrekkepten sonra belirli bir s\u00fcre sonra m\u00fcrekkepte ortaya \u00e7\u0131kan m\u00fcrekkep sol ve jel de\u011fi\u015ftirilebilir fenomendir, ayn\u0131 zamanda bask\u0131 do\u011frulu\u011funu artt\u0131rmaya da yard\u0131mc\u0131 olur.<\/p>\n
\u2463 Ak\u0131\u015fkanl\u0131k (d\u00fczle\u015ftirme). D\u0131\u015f kuvvetlerin etkisi alt\u0131nda m\u00fcrekkebin her y\u00f6ne yay\u0131lma derecesini ifade eder. Hareketlilik viskozitenin tersidir, hareketlilik ve m\u00fcrekkep plastisitesi ve tiksotropi aras\u0131nda bir ili\u015fki vard\u0131r, plastisite ve tiksotropi, hareketlilik k\u00fc\u00e7\u00fckt\u00fcr ve bunun tersi de ge\u00e7erlidir. Hareketlili\u011fin bask\u0131y\u0131 geni\u015fletmesi kolayd\u0131r, hareketlili\u011fin k\u00fc\u00e7\u00fck d\u00fc\u011f\u00fcmlerin bask\u0131s\u0131nda g\u00f6r\u00fcnmesi kolayd\u0131r. M\u00fcrekkep fenomeninin i\u00e7 i\u00e7e ge\u00e7mi\u015f d\u00fc\u011f\u00fcmlerinin d\u00fc\u011f\u00fcmleri de a\u011f olarak bilinir. Serigrafi m\u00fcrekkebinin hareketlili\u011fi genellikle 30-50 mm'dir.<\/p>\n
\u2464 Visko-elastisite. Kaz\u0131y\u0131c\u0131 kaz\u0131ma i\u015flemindeki m\u00fcrekkebin h\u0131zl\u0131 geri tepme performans\u0131ndan sonra kesildi\u011fini ifade eder. M\u00fcrekkep deformasyon h\u0131z\u0131 i\u00e7in gereklilikler, m\u00fcrekkep bask\u0131 lehine h\u0131zl\u0131 bir \u015fekilde geri teper.<\/p>\n
\u2465 kuruluk. Elek plakas\u0131 \u00fczerinde m\u00fcrekkep kurumas\u0131 i\u00e7in gereklilikler, ne kadar yava\u015f olursa o kadar iyidir, alt tabakaya aktar\u0131lan m\u00fcrekkep, ne kadar h\u0131zl\u0131 olursa o kadar iyidir.<\/p>\n
\u2466 \u0130ncelik. Pigment ve kat\u0131 madde partik\u00fcl boyutu 15 ~ 45\u03bcm, bask\u0131 m\u00fcrekkebi inceli\u011fi i\u00e7in uygun a\u011f a\u00e7\u0131kl\u0131\u011f\u0131n\u0131n 1\/4 ~ 1\/3'\u00fc olmal\u0131d\u0131r.<\/p>\n
\u2467 \u00c7izim. M\u00fcrekkebi almak i\u00e7in m\u00fcrekkep k\u00fcre\u011fi, ipek m\u00fcrekkebin gerilmesi ve k\u0131r\u0131lma derecesi de\u011fil, m\u00fcrekkebin ipek uzunlu\u011funda \u00e7ekilmesi olarak adland\u0131r\u0131l\u0131r, bask\u0131 y\u00fczeyindeki m\u00fcrekkep \u00e7ok say\u0131da filament g\u00f6r\u00fcn\u00fcr, b\u00f6ylece alt tabaka ve bask\u0131 plakas\u0131 lekelenir (nokta geni\u015flemesi, nokta t\u0131kanma sa\u00e7\u0131), bask\u0131 yap\u0131lamamas\u0131na neden olur. \u00c7ekme fenomeni, ba\u011flay\u0131c\u0131 molek\u00fcler a\u011f\u0131rl\u0131\u011f\u0131ndaki m\u00fcrekkebin \u00e7ok b\u00fcy\u00fck olmas\u0131 ve m\u00fcrekkebin viskozitesinden, bazen m\u00fcrekkebin sona ermesinden ve daha fazla \u00e7ekme fenomeni \u00fcretmesinden kaynaklanmaktad\u0131r.<\/p>\n
\u2468 Renk. Rengin \u00fc\u00e7 \u00f6zelli\u011fi vard\u0131r, yani ton, parlakl\u0131k, safl\u0131k. Ton, rengin do\u011fas\u0131nda bulunan renk faz\u0131 g\u00f6r\u00fcn\u00fcm\u00fcd\u00fcr, \u0131\u015f\u0131k dalgalar\u0131n\u0131n belirli bir dalga boyu belirli bir sabit tonu temsil eder, ton farkl\u0131d\u0131r, \u0131\u015f\u0131k dalgalar\u0131n\u0131n dalga boyu farkl\u0131d\u0131r, ton renk ve renk aras\u0131ndaki temel farkt\u0131r. Parlakl\u0131k, ayn\u0131 zamanda parlakl\u0131k olarak da bilinir, ayn\u0131 renk tonuna sahip bir dizi renk i\u00e7in, parlakl\u0131k nedeniyle farkl\u0131d\u0131rlar, derin ve hafif g\u00f6r\u00fcn\u00fcrler, beyaza ne kadar yak\u0131nsa, parlakl\u0131k o kadar b\u00fcy\u00fck olur. Doygunluk olarak da bilinen safl\u0131k, yani standart renge yak\u0131n renk derecesi, standart renge ne kadar yak\u0131nsa, safl\u0131k o kadar y\u00fcksek ve tam tersi, safl\u0131k o kadar d\u00fc\u015f\u00fckt\u00fcr.<\/p>\n
M\u00fcrekkep \u015feffafl\u0131\u011f\u0131 ve gizleme g\u00fcc\u00fc. Bunlar bir \u00e7ift \u00e7eli\u015fkili ili\u015fkidir, m\u00fcrekkebin \u00f6rtme g\u00fcc\u00fc ne kadar iyiyse, \u015feffafl\u0131k o kadar k\u00f6t\u00fcd\u00fcr ve tam tersi, m\u00fcrekkebin \u015feffafl\u0131\u011f\u0131 iyidir, \u00f6rtme g\u00fcc\u00fc zay\u0131ft\u0131r.<\/p>\n
M\u00fcrekkebin hava ko\u015fullar\u0131na dayan\u0131kl\u0131l\u0131\u011f\u0131. Alt tabaka \u00fczerine bas\u0131lan m\u00fcrekkebin, rengi, hasl\u0131\u011f\u0131 vb. do\u011fal ko\u015fullarda d\u0131\u015f mekana maruz kald\u0131\u011f\u0131nda do\u011fada de\u011fi\u015fmeden kalmas\u0131na hava ko\u015fullar\u0131na dayan\u0131kl\u0131l\u0131k denir. M\u00fcrekkebin hava ko\u015fullar\u0131na dayan\u0131kl\u0131l\u0131\u011f\u0131 esas olarak pigmente ba\u011fl\u0131d\u0131r, fotoba\u015flat\u0131c\u0131lar\u0131n varl\u0131\u011f\u0131 nedeniyle UV m\u00fcrekkep de m\u00fcrekkebin hava ko\u015fullar\u0131na dayan\u0131kl\u0131l\u0131\u011f\u0131n\u0131 etkileyecektir.<\/p>\n
1.2.3 UV Serigrafi Bask\u0131 M\u00fcrekkeplerinin Haz\u0131rlanmas\u0131
\nSerigrafi m\u00fcrekkebinin viskozitesi b\u00fcy\u00fckt\u00fcr (1-10 Pa-s), bask\u0131 h\u0131z\u0131 d\u00fc\u015f\u00fckt\u00fcr (5-30 m\/dak) ve m\u00fcrekkep tabakas\u0131 kal\u0131nd\u0131r (10-30 \u03bcm), bu nedenle UV serigrafi m\u00fcrekkebi haz\u0131rlan\u0131rken form\u00fclasyon yukar\u0131daki performans \u00f6zelliklerine g\u00f6re tasarlanmal\u0131d\u0131r.<\/p>\n
(1) Oligomer Se\u00e7imi
\nUV Serigrafi M\u00fcrekkebi, epoksi akrilik re\u00e7ine i\u00e7in yayg\u0131n olarak kullan\u0131lan oligomer, h\u0131zl\u0131 \u0131\u015f\u0131kla sertle\u015fme oran\u0131, iyi genel performans, ucuz, ancak ayn\u0131 zamanda k\u0131r\u0131lganl\u0131\u011f\u0131 art\u0131rmak, esnekli\u011fi ve yap\u0131\u015fmay\u0131 art\u0131rmak i\u00e7in poli\u00fcretan akrilik re\u00e7ineye kat\u0131lmak i\u00e7in de uygundur. Polyester akrilik re\u00e7ine ve amino akrilik re\u00e7inenin bir k\u0131sm\u0131n\u0131 da kullanabilir.<\/p>\n
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When technical buyers or formulators screen photoinitiators, the most useful decision frame is usually cure quality plus application fit: which package cures reliably, keeps appearance acceptable, and still works under the lamp, film thickness, and substrate conditions of the actual process.<\/p>\n
Why are blended photoinitiator packages so common?<\/strong> Should incomplete cure always be solved by adding more initiator?<\/strong> <\/p>\n <\/p>\n Quick answer:<\/strong> In most UV systems, photoinitiators are selected by balancing wavelength fit, through-cure, color control, and line speed. Buyers usually compare a blended package instead of one isolated product.<\/p>\n <\/p>\n <\/p>\n <\/p>","protected":false},"excerpt":{"rendered":" Screen printing, also known as screen printing or screen printing, belongs to the perforated printing. Screen printing plate is a porous screen stencil, directly photopolymer or film made of graphics<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[185],"tags":[],"class_list":["post-7791","post","type-post","status-publish","format-standard","hentry","category-photoinitiator"],"yoast_head":"\n
Because one product may control yellowing or lamp fit well while another improves cure depth or line-speed performance, so the full package is often stronger than any single grade.<\/p>\n
Not automatically. The real limitation may be the lamp, film thickness, pigment shading, or the rest of the reactive system rather than simple under-dosage.<\/p>\n\u015eimdi Bize Ula\u015f\u0131n!<\/b><\/strong><\/h2>\n
Fiyata ihtiyac\u0131n\u0131z varsa, l\u00fctfen a\u015fa\u011f\u0131daki forma ileti\u015fim bilgilerinizi doldurun, genellikle 24 saat i\u00e7inde sizinle ileti\u015fime ge\u00e7ece\u011fiz. Bana e-posta da g\u00f6nderebilirsiniz info@longchangchemical.com<\/span><\/a>\u00a0\u00c7al\u0131\u015fma saatleri i\u00e7inde (8:30 - 6:00 UTC+8 Pzt.~Sat.) veya h\u0131zl\u0131 yan\u0131t almak i\u00e7in web sitesi canl\u0131 sohbetini kullan\u0131n.<\/b><\/strong><\/h4>\n
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\n Fotoba\u015flat\u0131c\u0131 TPO<\/span><\/a><\/td>\n CAS 75980-60-8<\/td>\n<\/tr>\n \n Fotoba\u015flat\u0131c\u0131 TMO<\/span><\/a><\/td>\n CAS 270586-78-2<\/td>\n<\/tr>\n \n Fotoba\u015flat\u0131c\u0131 PD-01<\/span><\/a><\/td>\n CAS 579-07-7<\/td>\n<\/tr>\n \n Fotoba\u015flat\u0131c\u0131 PBZ<\/span><\/a><\/td>\n CAS 2128-93-0<\/td>\n<\/tr>\n \n Fotoba\u015flat\u0131c\u0131 OXE-02<\/span><\/a><\/td>\n CAS 478556-66-0<\/td>\n<\/tr>\n \n Fotoba\u015flat\u0131c\u0131 OMBB<\/span><\/a><\/td>\n CAS 606-28-0<\/td>\n<\/tr>\n \n Fotoba\u015flat\u0131c\u0131 MPBZ (6012)<\/span><\/a><\/td>\n CAS 86428-83-3<\/td>\n<\/tr>\n \n Fotoba\u015flat\u0131c\u0131 MBP<\/span><\/a><\/td>\n CAS 134-84-9<\/td>\n<\/tr>\n \n Fotoba\u015flat\u0131c\u0131 MBF<\/span><\/a><\/td>\n CAS 15206-55-0<\/td>\n<\/tr>\n \n Fotoba\u015flat\u0131c\u0131 LAP<\/span><\/a><\/td>\n CAS 85073-19-4<\/td>\n<\/tr>\n \n Fotoba\u015flat\u0131c\u0131 ITX<\/span><\/a><\/td>\n CAS 5495-84-1<\/td>\n<\/tr>\n \n Fotoba\u015flat\u0131c\u0131 EMK<\/span><\/a><\/td>\n CAS 90-93-7<\/td>\n<\/tr>\n \n Fotoba\u015flat\u0131c\u0131 EHA<\/span><\/a><\/td>\n CAS 21245-02-3<\/td>\n<\/tr>\n \n Fotoba\u015flat\u0131c\u0131 EDB<\/span><\/a><\/td>\n CAS 10287-53-3<\/td>\n<\/tr>\n \n Fotoba\u015flat\u0131c\u0131 DETX<\/span><\/a><\/td>\n CAS 82799-44-8<\/td>\n<\/tr>\n \n Fotoba\u015flat\u0131c\u0131 CQ \/ Camphorquinone<\/span><\/a><\/td>\n CAS 10373-78-1<\/td>\n<\/tr>\n \n Fotoba\u015flat\u0131c\u0131 CBP<\/span><\/a><\/td>\n CAS 134-85-0<\/td>\n<\/tr>\n \n Fotoba\u015flat\u0131c\u0131 BP \/ Benzofenon<\/span><\/a><\/td>\n CAS 119-61-9<\/td>\n<\/tr>\n \n Fotoba\u015flat\u0131c\u0131 BMS<\/span><\/a><\/td>\n CAS 83846-85-9<\/td>\n<\/tr>\n \n Fotoba\u015flat\u0131c\u0131 938<\/span><\/a><\/td>\n CAS 61358-25-6<\/td>\n<\/tr>\n \n Fotoba\u015flat\u0131c\u0131 937<\/span><\/a><\/td>\n CAS 71786-70-4<\/td>\n<\/tr>\n \n Fotoba\u015flat\u0131c\u0131 819 DW<\/span><\/a><\/td>\n CAS 162881-26-7<\/td>\n<\/tr>\n \n Fotoba\u015flat\u0131c\u0131 819<\/span><\/a><\/td>\n CAS 162881-26-7<\/td>\n<\/tr>\n \n Fotoba\u015flat\u0131c\u0131 784<\/span><\/a><\/td>\n CAS 125051-32-3<\/td>\n<\/tr>\n \n Fotoba\u015flat\u0131c\u0131 754<\/span><\/a><\/td>\n CAS 211510-16-6 442536-99-4<\/td>\n<\/tr>\n \n Fotoba\u015flat\u0131c\u0131 6993<\/span><\/a><\/td>\n CAS 71449-78-0<\/td>\n<\/tr>\n \n Fotoba\u015flat\u0131c\u0131 6976<\/span><\/a><\/td>\n CAS 71449-78-0 89452-37-9 108-32-7<\/td>\n<\/tr>\n \n Fotoba\u015flat\u0131c\u0131 379<\/span><\/a><\/td>\n CAS 119344-86-4<\/td>\n<\/tr>\n \n Fotoba\u015flat\u0131c\u0131 369<\/span><\/a><\/td>\n CAS 119313-12-1<\/td>\n<\/tr>\n \n Fotoba\u015flat\u0131c\u0131 160<\/a><\/span><\/td>\n CAS 71868-15-0<\/td>\n<\/tr>\n \n Fotoba\u015flat\u0131c\u0131 1206<\/span><\/a><\/td>\n <\/td>\n<\/tr>\n \n Fotoba\u015flat\u0131c\u0131 1173<\/span><\/a><\/td>\n CAS 7473-98-5<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n