Material kemasan makanan yang umum digunakan adalah karton. Karton memiliki beberapa keunggulan diantaranya ringan, murah, mudah dibentuk, mudah dicetak, mudah disimpan dan mudah didaur ulang. Namun material kemasan ini mudah robek jika dibandingkan dengan material lain seperti plastic, kaleng, dan kaca. Laminasi dilakukan untuk meningkatkan nilai ketahanan sobek dari karton, sehingga tidak mudah robek. Jenis karton yang umum digunakan sebagai material kemasan pangan adalah ivory. Ivory yang digunakan sebagai bahan pengujian ini bergramasi 260 gsm dan 310 gsm. Ada tiga jenis perlakuan ivory yang diuji yakni ivory non laminasi dan ivory laminasi doff, dan ivory laminasi glossy. Penelitian ini bertujuan untuk menganalisis perbandingan nilai ketahanan sobek ivory laminasi dan non laminasi. Metode yang digunakan dalam pengujian adalah ISO 534:2011, ISO 536:2010, dan ISO 1974:2012. Hasil penelitian menunjukkan bahwa peningkatan nilai ketahanan sobek karton ivory laminasi doff sebesar 22%-24% dan untuk laminasi glossy meningkat 24%-26%.
Optical Density is one of the important parameters used to control print quality. Optical density in print materials is form of interaction of ink with paper. This research is oriented to the investigation of optical density value of Yellow printing ink on coated and uncoated paper. The main purpose of this study is to analyze the effect of printing ink thickness on optimal density value. The optical density value of yellow prints obtained using densitometer measurement, printed using IGT method on coated and uncoated paper. Ink thickness variations are applied (0.8 - 9.6 μm). Density values was found to increase as the ink layer thickness increased to a certain point called the optimal density (2.4 μm ink thickness on coated paper and 4.5 μm on uncoated paper). Optical density of yellow printing ink on coated paper is higher uncoated paper, which relates to porosity on paper
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