Untuk mendapatkan bahan yang cocok, dafam upaya mengaiasi terjadinya set-off pada hasil cetak intaglio, diperoleh bahan additive yang dibuai dari campuran bahan wax, yaitu wax poliethilen (wax PE), wax politetrafluorethilen ( wax PTFF ) dan wax carnauba. Wax PE dan wax PTFE yang digunakan sudah berupa campuran yang disebut dengan wax polifluo. Dalam proses pembuatan - nya wax polifluo di dicampur dengan wax carnauba dengan perbandingan 97 % dan 3 %. Selanjutnya campuran wax ini ditambah dengan solvent dengan perbandingan 70 % wax dan 30 % solvent, kemudian dipanaskan sambil diaduk sampai lemperatur 120"C, kemudian didinginkan perlahan-lahan sampai temperatur kamar. Bahan additive yang dibuai ini disebut anti set-off. Dalam proses cetak intaglio, tinta yang digunakan ditambah dengan bahan additive (anti set-off) ini, sebanyak 4 %, agar hasil cetak intaglio yang didapal tidak mengalami set-off.
To obtain the suitable material for solving set-off problem in intaglio printing, it was obtained the additive which made trom mixed waxs are polyethylene wax ( PE wax ), poiyielrafluorcthylene wax ( P'f IE wax ) and canmuba wax. PF wax and PTFE wax which using have already mixed, which called polyfluo wax. In it's production, polyfluo wax was mixed with carnauba wax in 97 % compared with 3 %, this mixed was added with solvent in 70 % wax compared with 3 % of solvent and stir up which it's heating in 120°C, then cooling off until reach the room temperature, this additive called anti set-off. In proses of intaglio printing, the ink which used was added by 4 % of this additive to obtain the result of intaglio printing without set-off problem. |
