{"id":546,"date":"2026-04-21T06:02:27","date_gmt":"2026-04-21T06:02:27","guid":{"rendered":"https:\/\/isbm-blow-molding.com\/?p=546"},"modified":"2026-04-21T06:04:12","modified_gmt":"2026-04-21T06:04:12","slug":"pet-bottle-whitening-haze-root-causes-and-diagnostic-guide","status":"publish","type":"post","link":"https:\/\/isbm-blow-molding.com\/tr\/pet-bottle-whitening-haze-root-causes-and-diagnostic-guide\/","title":{"rendered":"PET \u015ei\u015felerde Beyazlama ve Bulan\u0131kl\u0131k: Temel Nedenler ve Te\u015fhis K\u0131lavuzu"},"content":{"rendered":"
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SORUN G\u0130DERME<\/p>\n

PET \u015ei\u015felerde Beyazlama ve Bulan\u0131kl\u0131k: Temel Nedenler ve Te\u015fhis K\u0131lavuzu<\/h1>\n

Bulan\u0131kl\u0131k ve beyazlama kusurlar\u0131, g\u00fcnl\u00fck PET \u015fi\u015fe \u00fcretiminin 10-201 tonunu bir gecede hurdaya \u00e7\u0131karabilir. Temel neden, yaln\u0131zca g\u00f6rsel incelemeyle neredeyse hi\u00e7bir zaman anla\u015f\u0131lamaz. Bu k\u0131lavuz, \u00fc\u00e7 farkl\u0131 beyazlama mekanizmas\u0131n\u0131, bunlar\u0131n \u00f6zel tan\u0131sal \u00f6zelliklerini ve Koreli \u00fcretim m\u00fchendislerinin her bir ar\u0131za modu i\u00e7in \u00f6ncelikle ayarlamas\u0131 gereken \u00f6l\u00e7\u00fclebilir proses parametrelerini ele almaktad\u0131r.<\/p>\n

Uzmanlardan Sis Te\u015fhis \u0130ncelemesi Al\u0131n \u2192<\/a><\/p>\n<\/div>\n<\/section>\n

<\/p>\n
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Bu K\u0131lavuzda<\/h3>\n
    \n
  1. \u00dc\u00e7 Farkl\u0131 Pus Mekanizmas\u0131<\/a><\/li>\n
  2. \u00d6n \u015eekillendirme S\u0131cakl\u0131\u011f\u0131: #1'in Temel Nedeni<\/a><\/li>\n
  3. Gerilme Oran\u0131 Eksikli\u011fi Analizi<\/a><\/li>\n
  4. PET'te Nem ve \u0130\u00e7sel Viskozite Sorunlar\u0131<\/a><\/li>\n
  5. Ana Direk Beyazlatma Te\u015fhisi<\/a><\/li>\n
  6. IR Is\u0131t\u0131c\u0131 Profili ve B\u00f6lge Optimizasyonu<\/a><\/li>\n
  7. Kal\u0131p S\u0131cakl\u0131\u011f\u0131 Etkisi<\/a><\/li>\n
  8. Ad\u0131m Ad\u0131m Tan\u0131lama Ak\u0131\u015f \u015eemas\u0131<\/a><\/li>\n
  9. Kore Fabrikas\u0131 Vaka \u00c7al\u0131\u015fmalar\u0131<\/a><\/li>\n
  10. \u00c7\u00f6z\u00fcm<\/a><\/li>\n<\/ol>\n<\/div>\n

    <\/p>\n

    1. \u00dc\u00e7 Farkl\u0131 Pus Mekanizmas\u0131<\/h2>\n

    <\/p>\n

    \n

    \"PET<\/p>\n

    Hedef PET \u015fi\u015fe berrakl\u0131\u011f\u0131 \u2014 amorf, sedefli ve stres kaynakl\u0131 beyazlama kusurlar\u0131n\u0131n belirlendi\u011fi temel \u00f6l\u00e7\u00fct.<\/p>\n<\/div>\n

    \u00dcretim m\u00fchendislerinin \u00e7o\u011fu \"bulan\u0131kl\u0131k\" terimini tek bir anlamda kullan\u0131r. Ger\u00e7ekte, PET \u015fi\u015felerdeki beyazlama, her birinin farkl\u0131 k\u00f6k nedenleri ve farkl\u0131 i\u015flem d\u00fczeltmeleri olan, mekanik olarak birbirinden farkl\u0131 \u00fc\u00e7 ar\u0131zadan kaynaklan\u0131r. Mekanizmay\u0131 yanl\u0131\u015f tan\u0131mlamak, yanl\u0131\u015f i\u015flem de\u011fi\u015fkenini d\u00fczeltmek, ger\u00e7ek kusuru \u00e7\u00f6zmeden b\u0131rakmak ve d\u00fczeltilen alanda yeni kusurlar yaratmak anlam\u0131na gelir. Ayl\u0131k 4 milyon \u015fi\u015fe \u00fcreten Koreli bir i\u00e7ecek \u00fcreticisi, deneme yan\u0131lma y\u00f6ntemiyle te\u015fhis yapmay\u0131 g\u00f6ze alamaz. \u0130lk te\u015fhis ad\u0131m\u0131 her zaman \u00fc\u00e7 mekanizmadan hangisinin bulan\u0131kl\u0131\u011fa neden oldu\u011funu belirlemektir.<\/p>\n

    \u00dc\u00e7 mekanizma \u015funlard\u0131r: amorf bulan\u0131kl\u0131k (yetersiz gerilmi\u015f PET zincirlerinden kaynaklanan \u0131\u015f\u0131k sa\u00e7\u0131lmas\u0131), sedefli beyazlama (a\u015f\u0131r\u0131 \u0131s\u0131nmadan kaynaklanan mikro kristalle\u015fme) ve gerilim beyazlamas\u0131 (molek\u00fcler hizalama \u00e7izgileri boyunca mekanik gerilim \u00e7atlamas\u0131). Her biri g\u00f6rsel olarak farkl\u0131 kusur desenleri \u00fcretir, farkl\u0131 \u015fi\u015fe b\u00f6lgelerinde yo\u011funla\u015f\u0131r ve farkl\u0131 i\u015flem ayarlamalar\u0131 gerektirir. A\u015fa\u011f\u0131daki te\u015fhis kartlar\u0131, \u00fcretim hatt\u0131n\u0131zda her birini nas\u0131l tan\u0131mlayaca\u011f\u0131n\u0131z\u0131 a\u00e7\u0131klamaktad\u0131r.<\/p>\n

    \n

    <\/p>\n

    \n
    \n

    T\u0130P 1<\/span><\/p>\n

    Amorf Pus (Bulan\u0131k, Tekd\u00fcze Saydaml\u0131k)<\/h3>\n<\/div>\n

    G\u00f6r\u00fcn\u00fcm: \u015ei\u015fe g\u00f6vdesi boyunca e\u015fit olarak da\u011f\u0131lm\u0131\u015f s\u00fctl\u00fc, bulan\u0131k bir saydaml\u0131k. I\u015f\u0131k i\u00e7inden ge\u00e7er ancak da\u011f\u0131l\u0131r, bu da \u015fi\u015feye kristal berrakl\u0131\u011f\u0131 yerine buzlu bir g\u00f6r\u00fcn\u00fcm verir. Bu kusur genellikle \u015fi\u015fenin t\u00fcm g\u00f6vdesini etkiler, belirli b\u00f6lgeleri de\u011fil. Temel neden: \u00dcfleme s\u0131ras\u0131nda yetersiz \u00e7ift eksenli gerilme, \u0131\u015f\u0131\u011f\u0131 sis damlac\u0131klar\u0131 gibi da\u011f\u0131tan rastgele y\u00f6nlendirilmi\u015f PET zincirleri b\u0131rak\u0131r.<\/p>\n

    Tipik tetikleyici:<\/strong> \u00dcfleme istasyonuna giren \u00f6n kal\u0131b\u0131n \u00e7ok so\u011fuk olmas\u0131, germe \u00e7ubu\u011funun zamanlamas\u0131n\u0131n yetersiz olmas\u0131 veya \u015fi\u015fe hacmine g\u00f6re \u00f6n kal\u0131p tasar\u0131m\u0131n\u0131n k\u00fc\u00e7\u00fck olmas\u0131 gibi sorunlar ortaya \u00e7\u0131kabilir.<\/p>\n<\/div>\n

    <\/p>\n

    \n
    \n

    T\u0130P 2<\/span><\/p>\n

    Sedefli Beyazlatma (I\u015f\u0131lt\u0131l\u0131, Parlak)<\/h3>\n<\/div>\n

    G\u00f6r\u00fcn\u00fcm: I\u015f\u0131k alt\u0131nda d\u00f6nd\u00fcr\u00fcld\u00fc\u011f\u00fcnde hafif yanard\u00f6ner bir de\u011fi\u015fim g\u00f6steren, inci benzeri parlak beyazl\u0131k. Genellikle taban kutbunda, boyun-omuz ge\u00e7i\u015finde veya kal\u0131p kal\u0131nt\u0131 b\u00f6lgelerinde yo\u011funla\u015f\u0131r. Temel neden: Polimer 120-180\u00b0C kristalle\u015fme aral\u0131\u011f\u0131ndan \u00e7ok yava\u015f so\u011fudu\u011funda veya \u00f6n kal\u0131p y\u00fczey s\u0131cakl\u0131\u011f\u0131 115\u00b0C'yi a\u015ft\u0131\u011f\u0131nda PET'in k\u00fcresel kristalle\u015fmesi.<\/p>\n

    Tipik tetikleyici:<\/strong> IR \u0131s\u0131t\u0131c\u0131n\u0131n profili belirli b\u00f6lgelerde \u00e7ok agresif, etkilenen alanlarda kal\u0131p so\u011futmas\u0131 yetersiz, IR \u00e7\u0131k\u0131\u015f\u0131 ile \u00fcfleme istasyonu aras\u0131nda \u00f6n kal\u0131p bekleme s\u00fcresi a\u015f\u0131r\u0131 uzun.<\/p>\n<\/div>\n

    <\/p>\n

    \n
    \n

    T\u0130P 3<\/span><\/p>\n

    Strese Ba\u011fl\u0131 Beyazlama (Yerel \u00c7izgiler veya Lekeler)<\/h3>\n<\/div>\n

    G\u00f6r\u00fcn\u00fcm: Molek\u00fcler hizalama y\u00f6nleri boyunca keskin beyaz\u0131ms\u0131 \u00e7izgiler veya \u015feritler, en yayg\u0131n olarak \u015fi\u015fe g\u00f6vdesinde dikey \u00e7izgiler veya omuzda radyal \u00e7izgiler. Kusur, b\u00fckme veya s\u0131kma testinde daha da belirginle\u015fir. Temel neden: Yerel mekanik stres, zaten hizalanm\u0131\u015f polimer zincirlerinin elastik deformasyon s\u0131n\u0131r\u0131n\u0131 a\u015farak, \u0131\u015f\u0131\u011f\u0131 da\u011f\u0131tan mikro bo\u015fluklar olu\u015fturur.<\/p>\n

    Tipik tetikleyici:<\/strong> \u00c7ubuk \u00e7ok h\u0131zl\u0131 gerdirilirse, hava \u00fcfleme zamanlamas\u0131 uyumsuzlu\u011fu olursa, asimetrik \u00f6n \u015fekillendirme \u0131s\u0131tmas\u0131 d\u00fczensiz genle\u015fmeye neden olursa veya \u00f6n \u015fekillendirme geometrisinden kaynaklanan duvar kal\u0131nl\u0131\u011f\u0131 da\u011f\u0131l\u0131m\u0131 sorunlar\u0131 olursa.<\/p>\n<\/div>\n<\/div>\n

    Do\u011fru mekanizma tan\u0131mlamas\u0131, do\u011fru s\u00fcre\u00e7 ayarlamas\u0131n\u0131n \u00f6n\u00fcn\u00fc a\u00e7ar. Bu k\u0131lavuzun geri kalan\u0131nda, her bir temel neden kategorisi, onu tetikleyen belirli s\u00fcre\u00e7 parametreleri ve Koreli \u00fcretim m\u00fchendislerinin \u00f6ncelikle denemesi gereken ayarlama aral\u0131klar\u0131 ayr\u0131nt\u0131l\u0131 olarak ele al\u0131nmaktad\u0131r.<\/p>\n

    <\/p>\n

    2. \u00d6n \u015eekillendirme S\u0131cakl\u0131\u011f\u0131: #1'in Temel Nedeni<\/h2>\n

    <\/p>\n

    \n

    \"ISBM<\/p>\n

    ISBM \u00f6n \u015fekillendirme i\u015flemi s\u0131ras\u0131nda, \u00fcfleme istasyonuna giri\u015f an\u0131nda y\u00fczey s\u0131cakl\u0131\u011f\u0131 100-110\u00b0C aral\u0131\u011f\u0131nda kalmal\u0131d\u0131r.<\/p>\n<\/div>\n

    \u015ei\u015fe berrakl\u0131\u011f\u0131n\u0131 kontrol eden en etkili de\u011fi\u015fken, \u00fcfleme istasyonundaki \u00f6n \u015fekillendirme y\u00fczey s\u0131cakl\u0131\u011f\u0131d\u0131r. PET, \u00fcfleme i\u015flemine girerken 100-110\u00b0C aras\u0131nda optimum bir y\u00fczey s\u0131cakl\u0131\u011f\u0131 aral\u0131\u011f\u0131na sahiptir. 100\u00b0C'nin alt\u0131nda polimer tam esneme i\u00e7in \u00e7ok serttir ve Tip 1 amorf bulan\u0131kl\u0131\u011fa neden olur. 115\u00b0C'nin \u00fczerinde polimer k\u00fcresel kristalle\u015fmeye ba\u015flar ve Tip 2 sedefli beyazlamaya neden olur. 10\u00b0C'lik aral\u0131k affedilmezdir; Kore'deki bir\u00e7ok bulan\u0131kl\u0131k kusuru buradan kaynaklanmaktad\u0131r.<\/p>\n

    <\/p>\n

    S\u0131cakl\u0131k b\u00f6lgesi te\u015fhis referans\u0131:<\/strong><\/p>\n