| 摘要 |
PROBLEM TO BE SOLVED: To provide a color adjusting method for adding a colorant to a main raw material changed in color at every arrival lot and applying processing treatment to the obtained mixture before adjusting the color of a molded product to a target color. SOLUTION: This color adjusting method of the molded product comprises a process (1) for obtaining the color value of a sample main raw material and the color value of a sample molded product (plain) manufactured using only the sample main raw material, a process (2) for measuring the color value of a sample molded product (single color) obtained by adding each of colorants to the sample main raw material independently to clculate a discoloration efficiency P, a process (3) for obtaining the color value of an arrival lot main raw material, a process (4) for calculating the estimate color value of an arrival lot molded product (plain) estimated to be produced when only the arrival lot main raw material is subjected to processing treatment, a process (5) for calculating an estimate discoloration efficiency R at every colorant caused between the arrival lot molded product (plain) and the arrival lot molded product (single color) and a process (6) for calculating the amount to be added of each of the colorants necessary for obtaining a target color using the estimate discoloration efficiency R. COPYRIGHT: (C)2005,JPO&NCIPI
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