深綠花桿紙之顏色配方

Dyestuff Formulation of A Dull Greenish Flora Tape Paper

作者受國內某大紙廠之託，尋找有著明顯色變之起皺深綠花桿紙之顏色配方。依據作者之長期配色經驗及色混原理，找出利用1.80 % Direct Sky Blue 5B，1.71-1.75 % Direct Yellow 12, 0.09 % Direct Scarlet 4BS 及0.17 % Basic Violet10 混合染料染著70 % NBKP 及30 % LBKP（游離度450 ml CSF）混合漿，並藉明礬之固色作用，可抄出與標準紙色（CIE L*a*b*= 48.11/-3.87/13.97）色差（△E*）小至2.0 以下，人眼不易辨識之深綠色花桿色紙顏色配方。 The authors studied the dyestuff formulation for shade matching of creped dark greenish flora tape paper having metamerism at the request of a big paper mill in Taiwan. According to the color mixing principle and our past experience in paper dyeing, a formulation of 1.80% Direct Sky Blue 5B, 1.71- 1.75% Direct Yellow 12, 0.09% Direct Scarlet 4 BS and 0.17% Basic Violet 10 mix can dye the mixed pulp of 70% NBKP and 30% LBKP (freeness: 450 ml CSF) in acidic alum-aided dyeing to the desired shade of flora tape paper (CIE L*a*b* = 48.11/-3.87/13.97) under D65 light with an acceptable color difference (△E*<2.0).

The authors studied the dyestuff formulation for shade matching of creped dark greenish flora tape paper having metamerism at the request of a big paper mill in Taiwan. According to the color mixing principle and our past experience in paper dyeing, a formulation of 1.80% Direct Sky Blue 5B, 1.71- 1.75% Direct Yellow 12, 0.09% Direct Scarlet 4 BS and 0.17% Basic Violet 10 mix can dye the mixed pulp of 70% NBKP and 30% LBKP (freeness: 450 ml CSF) in acidic alum-aided dyeing to the desired shade of flora tape paper (CIE L*a*b* = 48.11/-3.87/13.97) under D65 light with an acceptable color difference (△E*<2.0).