{"id":7489,"date":"2024-11-05T07:41:21","date_gmt":"2024-11-05T07:41:21","guid":{"rendered":"https:\/\/longchangchemical.com\/?p=7489"},"modified":"2026-04-28T10:42:40","modified_gmt":"2026-04-28T10:42:40","slug":"how-to-solve-ink-crystallisation","status":"publish","type":"post","link":"https:\/\/longchangchemical.com\/tr\/how-to-solve-ink-crystallisation\/","title":{"rendered":"M\u00fcrekkep kristalle\u015fmesi nas\u0131l \u00e7\u00f6z\u00fcl\u00fcr?"},"content":{"rendered":"

Ambalaj bask\u0131s\u0131, y\u00fcksek katma de\u011ferli mallar\u0131n pe\u015finde grafik s\u00fcslemelerin y\u00fcksek kalitesini vurgulamak i\u00e7in genellikle temel rengi basan ilk bask\u0131d\u0131r. Uygulamada, b\u00f6yle bir bask\u0131 sipari\u015finin m\u00fcrekkep kristalle\u015fmesi fenomeni \u00fcretmesi \u00e7ok kolayd\u0131r. Sonu\u00e7ta, bunun nedeni nedir? Ve bu sorun nas\u0131l \u00e7\u00f6z\u00fcl\u00fcr?<\/p>\n

 <\/p>\n

M\u00fcrekkep kristalle\u015fmesinin (kristalizasyon) nedenlerinin analiz edilmesi<\/p>\n

\u0130lk olarak, parlak ve canl\u0131 renklerin amac\u0131na ula\u015fmak i\u00e7in, genellikle \u00e7ok kal\u0131n bas\u0131lan m\u00fcrekkep tabakas\u0131n\u0131n bask\u0131s\u0131nda veya bir kez yeniden bas\u0131ld\u0131\u011f\u0131nda veya bask\u0131 bas\u0131nc\u0131n\u0131 artt\u0131rd\u0131\u011f\u0131nda, kuru ya\u011f da daha fazla eklenir. M\u00fcrekkep tabakas\u0131 ta\u015f\u0131y\u0131c\u0131y\u0131 tamamen kaplam\u0131\u015f olsa da, \u00e7ok h\u0131zl\u0131 kuruma nedeniyle ve y\u00fczey \u00e7ok p\u00fcr\u00fczs\u00fcz m\u00fcrekkep filmi tabakas\u0131 haline geldikten sonra bask\u0131 m\u00fcrekkep filmine yol a\u00e7ar, sanki cam\u0131n ince \u00fcst bask\u0131 yapmas\u0131 zordur, b\u00f6ylece m\u00fcrekkep \u00fczerine bask\u0131 yap\u0131ld\u0131ktan sonra d\u00fczensiz veya tamamen m\u00fcrekkep \u00fczerine bas\u0131lm\u0131\u015f, boncuk benzeri sunumda temel renkte m\u00fcrekkep \u00fczerine bas\u0131lm\u0131\u015f kapak (istiflenmi\u015f) veya \u00e7ok zay\u0131f desenin bask\u0131s\u0131n\u0131n renginin bir par\u00e7as\u0131, m\u00fcrekkep ba\u011flant\u0131s\u0131 \u00e7ok zay\u0131ft\u0131r ve hatta baz\u0131lar\u0131 silinebilir. Bask\u0131 end\u00fcstrisi m\u00fcrekkep filmi kristalizasyonu, cam veya ayna olarak adland\u0131r\u0131l\u0131r.<\/p>\n

 <\/p>\n

Grafi\u011fin kenar\u0131n\u0131n netli\u011fini art\u0131rmak i\u00e7in, son y\u0131llarda m\u00fcrekkep sistemindeki \u00e7o\u011fu \u00fcretici silikon ya\u011f\u0131 eklemektedir, ancak \u00e7ok fazla silikon ya\u011f\u0131 m\u00fcrekkep filminin dikey b\u00fcz\u00fclmesine neden olma e\u011filimindedir.<\/p>\n

 <\/p>\n

\u015eu anda m\u00fcrekkep filmi kristalle\u015fmesinin nedenlerine ili\u015fkin a\u015fa\u011f\u0131daki gibi birka\u00e7 farkl\u0131 g\u00f6r\u00fc\u015f bulunmaktad\u0131r. Kristalle\u015fme teorisine g\u00f6re kristalle\u015fme, s\u0131v\u0131 halden (s\u0131v\u0131 veya erimi\u015f cisim) veya gaz halinden kristaller olu\u015fturma s\u00fcrecidir. S\u0131cakl\u0131\u011f\u0131n azalmas\u0131 ve maddede \u00f6nemli bir azalma ile \u00e7\u00f6z\u00fcn\u00fcrl\u00fck, \u00e7\u00f6zeltinin so\u011futulmas\u0131 yoluyla doyurulabilir ve daha sonra kristalle\u015ftirilebilir; s\u0131cakl\u0131\u011f\u0131n azalmas\u0131 ve maddenin azalmas\u0131 ile \u00e7\u00f6z\u00fcn\u00fcrl\u00fck, \u00e7\u00f6z\u00fcc\u00fcn\u00fcn bir k\u0131sm\u0131 buharla\u015ft\u0131\u011f\u0131nda ve daha sonra so\u011futuldu\u011funda ve kristalle\u015fti\u011finde b\u00fcy\u00fck de\u011fildir. Baz\u0131 insanlar, yeniden kristalize olan kristalizasyonun ambalaj bask\u0131 grafiklerinin (m\u00fcrekkep film tabakas\u0131) ...... bask\u0131 m\u00fcrekkep film sistemi \u00e7\u00f6z\u00fcc\u00fc buharla\u015fmas\u0131 (u\u00e7ucu) ve daha sonra yeniden kristalizasyon olarak da bilinen olu\u015fturmak i\u00e7in so\u011futuldu\u011funa inanmaktad\u0131r.<\/p>\n

 <\/p>\n

\u0130kinci olarak, ambalaj bask\u0131 m\u00fcrekkebi kristalizasyonunun (kristalle\u015fme) esas olarak m\u00fcrekkep sistemindeki pigmentlerin kristalle\u015fmesinden kaynakland\u0131\u011f\u0131na inananlar\u0131n bir k\u0131sm\u0131 da vard\u0131r. Pigment kristalle\u015fmesi anizotropik oldu\u011funda, kristal halinin i\u011fne, \u00e7ubuk oldu\u011funu biliyoruz. M\u00fcrekkep filmi olu\u015ftu\u011funda, uzunluk y\u00f6n\u00fc sistemdeki re\u00e7inenin (ba\u011flay\u0131c\u0131) ak\u0131\u015f y\u00f6n\u00fc boyunca kolayca d\u00fczenlenir, b\u00f6ylece daha b\u00fcy\u00fck bir daralma meydana gelir; k\u00fcresel kristaller durumunda y\u00f6nl\u00fc bir d\u00fczenleme yoktur, bu nedenle daralma k\u00fc\u00e7\u00fckt\u00fcr. Ambalaj bask\u0131 m\u00fcrekkebi sistemindeki inorganik pigmentler genellikle kadmiyum pigment ambalaj bask\u0131 m\u00fcrekkebi gibi k\u00fcresel kristallere sahiptir, b\u00fcz\u00fclmesi (kristalle\u015fmesi) de k\u00fc\u00e7\u00fckt\u00fcr. Partik\u00fcl boyutu ayr\u0131ca kal\u0131plama b\u00fcz\u00fclmesini ve kal\u0131plama b\u00fcz\u00fclme oran\u0131n\u0131 da etkiler, pigment partik\u00fclleri belirli bir dereceye kadar b\u00fcy\u00fck veya belirli bir dereceye kadar k\u00fc\u00e7\u00fck oldu\u011funda, kal\u0131plama b\u00fcz\u00fclmesi ve b\u00fcz\u00fclme oran\u0131 minimumdur. \u00d6te yandan, kristalin b\u00fcy\u00fck k\u00fcresel kristal re\u00e7ine kal\u0131plama b\u00fcz\u00fclmesi k\u00fc\u00e7\u00fckt\u00fcr, aksine, kristalin b\u00fcy\u00fck, k\u00fcresel olmayan kristal kal\u0131plama b\u00fcz\u00fclmesi b\u00fcy\u00fckt\u00fcr. Sonu\u00e7 olarak, ister renk pigmentlerinin bir kar\u0131\u015f\u0131m\u0131 ister renk ve \u0131\u015f\u0131\u011f\u0131n bir kar\u0131\u015f\u0131m\u0131 olsun, pigmentlerin do\u011fru kullan\u0131m\u0131 sadece kimyasal yap\u0131yla ilgili de\u011fildir, ayn\u0131 zamanda kristal faz boyutunun da\u011f\u0131l\u0131m\u0131, kohezyon fenomeni, kat\u0131 \u00e7\u00f6zelti ve di\u011fer etkileyen fakt\u00f6rler gibi fiziksel \u00f6zelliklerinin \u00e7o\u011funa da ba\u011fl\u0131d\u0131r; ayn\u0131 zamanda inorganik pigmentler ve organik pigmentlerin adil bir de\u011ferlendirme yapmak i\u00e7in kendi g\u00fc\u00e7l\u00fc ve zay\u0131f y\u00f6nleri olmal\u0131d\u0131r, b\u00f6ylece ikisi bir arada bulunur ve ikincisi birincil bir konuma sahiptir.<\/p>\n

 <\/p>\n

Ambalaj bask\u0131 m\u00fcrekkebini (pigment) se\u00e7me s\u00fcrecinde, renklendirme g\u00fcc\u00fcn\u00fc (da\u011f\u0131l\u0131m derecesi ne kadar ince olursa, renklendirme g\u00fcc\u00fc o kadar y\u00fcksek olur, ancak renklendirme g\u00fcc\u00fcn\u00fcn azalaca\u011f\u0131 bir s\u0131n\u0131r de\u011fer vard\u0131r), \u00f6rtme g\u00fcc\u00fcn\u00fc (pigmentin kendi \u0131\u015f\u0131k emici \u00f6zellikleri) de dikkate almal\u0131y\u0131z, Pigmentin ve renklendirme i\u00e7in gerekli re\u00e7ine ba\u011flay\u0131c\u0131n\u0131n k\u0131r\u0131lma indisindeki fark, pigment partik\u00fcllerinin boyutu, pigmentin kristal formu, d\u00fc\u015f\u00fck kristalli formun simetrisinden daha y\u00fcksek derecede simetrik molek\u00fcler yap\u0131), d\u00fc\u015f\u00fck \u00f6rtme g\u00fcc\u00fc; Kristal formu en \u00f6nemli fakt\u00f6rd\u00fcr. \u00d6rtme g\u00fcc\u00fc d\u00fc\u015f\u00fckt\u00fcr; kristal tipi \u00e7ubuk \u00f6rtme g\u00fcc\u00fcnden daha pul puldur, y\u00fcksek kristallik pigmenti d\u00fc\u015f\u00fck kristallik \u00f6rtme g\u00fcc\u00fcnden daha fazlad\u0131r, bu nedenle ambalaj bask\u0131 m\u00fcrekkebi m\u00fcrekkep filminin \u00f6rtme g\u00fcc\u00fc ne kadar b\u00fcy\u00fckse, vitrifikasyonunun ba\u015far\u0131s\u0131z olma \u015fans\u0131 o kadar artar), \u0131s\u0131, g\u00f6\u00e7, ayr\u0131\u015fma, \u00e7\u00f6z\u00fcn\u00fcrl\u00fck ve polimerler (re\u00e7inenin m\u00fcrekkep sistemi) veya katk\u0131 maddeleri vb. hafife al\u0131nmamal\u0131d\u0131r.<\/p>\n

 <\/p>\n

\u00dc\u00e7\u00fcnc\u00fcs\u00fc, baz\u0131 operat\u00f6rler se\u00e7imin uygun olmamas\u0131 durumunda kristalle\u015fme ba\u015far\u0131s\u0131zl\u0131\u011f\u0131na da neden olaca\u011f\u0131na inanmaktad\u0131r. Bunun nedeni, temel renk m\u00fcrekkebinin \u00e7ok sert (kuru) kurumas\u0131, y\u00fczey serbest enerjisinin azalmas\u0131d\u0131r. \u00c7ok uzun bir depolama s\u00fcresinden sonra bas\u0131lan \u00f6nceki renk, at\u00f6lye s\u0131cakl\u0131\u011f\u0131 \u00e7ok y\u00fcksek veya bask\u0131 m\u00fcrekkebi kurutucu \u00e7ok fazla, \u00f6zellikle kobalt kurutucu, kurutma ve benzeri gibi h\u0131zl\u0131 ve yo\u011fun kurutma y\u00f6ntemlerinin kullan\u0131lmas\u0131 durumunda kristalle\u015fme fenomeni \u00fcretecektir.<\/p>\n

 <\/p>\n

M\u00fcrekkep kristalle\u015fme hatas\u0131n\u0131n \u00f6nlenmesi y\u00f6ntemi<\/p>\n

1, daha fazla solvent i\u00e7eren h\u0131zl\u0131 kuruyan m\u00fcrekkep \u00fcst bask\u0131s\u0131 ile (etki daha iyi olmas\u0131na ra\u011fmen ikinci rengin bask\u0131s\u0131 \u00fczerinde kurumas\u0131n\u0131 beklemeyin, ancak bu y\u00f6ntem zahmetli, zaman al\u0131c\u0131 ve maliyetlidir), solvent kullan\u0131m\u0131 m\u00fcrekkep filmi katman\u0131n\u0131n bir sonraki katman\u0131na dald\u0131r\u0131labilir ve yumu\u015fat\u0131labilir (ancak bazen yard\u0131mc\u0131 olmaz).<\/p>\n

 <\/p>\n

2, master \u00fcst bask\u0131 s\u00fcresi, \u00f6nceki renk bask\u0131da ikinci renk bask\u0131dan sonra m\u00fcmk\u00fcn oldu\u011funca h\u0131zl\u0131 olmal\u0131d\u0131r.<\/p>\n

 <\/p>\n

3. M\u00fcrekkebe yava\u015f kuruyan bir ko-polimer (hidrokinon gibi) veya yava\u015f kuruyan malzemeler (vazelin, lanolin, balmumu katk\u0131lar\u0131) ekleyin.<\/p>\n

 <\/p>\n

4, ambalaj bask\u0131s\u0131nda dekoratif desen tasar\u0131m\u0131, temel rengin \u00fczerine bask\u0131 yapmak i\u00e7in farkl\u0131 kolay kullan\u0131labilir.<\/p>\n

 <\/p>\n

5, m\u00fcrekkep form\u00fcl\u00fcnde daha az kobalt kurutucu olmal\u0131d\u0131r.<\/p>\n

 <\/p>\n

6, m\u00fcrekkep kurutucu miktar\u0131n\u0131 azaltmak i\u00e7in h\u0131zl\u0131 kuruyan sentetik re\u00e7ine tipi ba\u011flay\u0131c\u0131 kullanabilir.<\/p>\n

 <\/p>\n

7, ikinci renk m\u00fcrekkebin yap\u0131\u015fmas\u0131n\u0131 artt\u0131r\u0131n, ama\u00e7 kristalize olmu\u015f m\u00fcrekkep filmini yok etmektir. S\u0131f\u0131r m\u00fcrekkep harmanlama ya\u011f\u0131 veya alkid re\u00e7ineleri, epoksi re\u00e7ineleri ve poliamid re\u00e7inelerinin kullan\u0131m\u0131 gibi daha fazla yap\u0131\u015fma malzemesidir, m\u00fcrekkep eklemek yap\u0131\u015fmas\u0131n\u0131 art\u0131rabilir, ancak bu re\u00e7ineler ofset bask\u0131 m\u00fcrekkebinin kar\u0131\u015fabilirli\u011fi ile iyi de\u011fildir, eklenemez, \u00e7\u00fcnk\u00fc \u00e7ok fazla kat\u0131l\u0131m bask\u0131 m\u00fcrekkebinin rengini seyreltme e\u011filimindedir ve \u00e7ok az etkisi iyi olmayacakt\u0131r.<\/p>\n

 <\/p>\n

8, m\u00fcrekkep film tabakas\u0131n\u0131 \u00e7\u00f6zmek i\u00e7in organik \u00e7\u00f6z\u00fcc\u00fcler eklemek i\u00e7in bask\u0131 m\u00fcrekkebinde kristalize olmu\u015ftur. Bu, bask\u0131 operat\u00f6rleri taraf\u0131ndan yayg\u0131n olarak kullan\u0131lan y\u00f6ntemlerden biridir, ancak kristalize m\u00fcrekkep film tabakas\u0131, a\u011f yap\u0131s\u0131n\u0131n p\u00fcr\u00fczs\u00fcz m\u00fcrekkep film tabakas\u0131n\u0131n ana g\u00f6vdesi haline gelmi\u015ftir, etkisi iyi olmad\u0131\u011f\u0131nda \u00e7ok fazla \u00e7\u00f6z\u00fclmesi kolay de\u011fildir.<\/p>\n

 <\/p>\n

9, polariteyi artt\u0131rmak i\u00e7in alkali veya sabun ile bask\u0131 m\u00fcrekkebinde, b\u00f6ylece \u00fczerine bask\u0131 yapmak daha kolay olur, ancak o zaman, \u00fczerine bas\u0131lm\u0131\u015f gibi g\u00f6r\u00fcnse de, kuruduktan sonra s\u0131k\u0131ca tutturulmaz ve silinmesi \u00e7ok kolayd\u0131r.<\/p>\n

 <\/p>\n

Ambalaj bask\u0131 grafiklerinin kalitesini sa\u011flamak i\u00e7in yukar\u0131daki y\u00f6ntemleri ve \u00f6nleyici tedbirleri \u00f6zetlemek gerekirse, m\u00fcrekkep filminin ikinci renk bask\u0131n\u0131n ba\u015flang\u0131c\u0131nda kurumas\u0131na izin vermemek i\u00e7in bask\u0131 m\u00fcrekkebinin kurulu\u011funu en iyi \u015fekilde kavramakt\u0131r.<\/p>\n

<\/p>\n

Bask\u0131 ve m\u00fcrekkep i\u015fleme konular\u0131na pratik bir form\u00fclasyon bak\u0131\u015f a\u00e7\u0131s\u0131<\/h2>\n

M\u00fcrekkep performans\u0131 sorunlar\u0131 genellikle \u00e7ok de\u011fi\u015fkenli sorunlard\u0131r. Ekipler, net bir karar \u00e7er\u00e7evesi olmadan tek tek hammaddeleri de\u011fi\u015ftirmek yerine, transfer, ak\u0131\u015f, kuruma veya k\u00fcrlenme ve alt katman tutunmas\u0131n\u0131 birlikte de\u011ferlendirdiklerinde genellikle daha h\u0131zl\u0131 ilerlerler.<\/p>\n