VARIASI FORMULASI TINTA BLACK FLEXOGRAPHY DALAM PEMENUHAN STANDAR KUALITAS WARNA DI PT. DIC GRAPHICS

The demand for paper packaging such as paper cups has increased significantly, thus driving the need for high-quality printing inks that are environmentally friendly. PT DIC Graphics as a flexography ink manufacturer faces challenges in black ink quality, especially related to color mismatch and print durability, for this reason the right formulation is needed to meet market needs. This study aims to analyze the effect of variations in the formulation of water-based flexography black ink on ink viscosity, color (ΔE), rub resistance, and condensation of the print. The results showed that increasing the amount of varnish decreased viscosity and increased rub resistance, but reduced color accuracy in some samples. Formula T3 gave the best overall performance. Condensation resistance testing proved that all formulas were resistant to moisture.

Permintaan kemasan kertas seperti paper cup mengalami peningkatan signifikan, sehingga mendorong kebutuhan akan tinta cetak berkualitas tinggi yang ramah lingkungan. PT. DIC Graphics sebagai produsen tinta flexography menghadapi tantangan dalam kualitas tinta black, khususnya terkait ketidaksesuaian warna dan daya tahan cetak, untuk itu diperlukan formulasi yang tepat guna memenuhi kebutuhan pasar. Penelitian ini bertujuan untuk menganalisis pengaruh variasi formulasi tinta black flexography water-based terhadap viskositas tinta, warna (ΔE), rub resistance, dan kondensasi hasil cetak. Hasil penelitian menunjukkan bahwa peningkatan jumlah vernis menurunkan viskositas dan meningkatkan ketahanan gosok, tetapi mengurangi akurasi warna pada beberapa sampel. Formula T3 memberikan performa terbaik secara keseluruhan. Pengujian ketahanan kondensasi membuktikan bahwa semua formula tahan terhadap kelembaban.