| Popis: |
To ensure the reproducibility of the dyeing of cotton knit by cold pad batch(CPB), the solubility, alkali sta-bility and substantivity of multi functional type reactive dyes were tested. The color difference of the cotton knit CPBdyeing products between laboratory and dye house was measured. The results showed that the equipments, dyes andfabrics, all of them influenced the color differences of the final samples between the laboratory and dye house. Thesefactors could not be controlled to reduce the color difference between the laboratory and dye house in the conventionalcomputer color matching algorithm. A new color match prediction method based on the non-negative matrix factor-ization(NNMF) algorithm was introduced and the applicability was studied by comparing with the conventional colormatch prediction method based on the Newton-Lapson algorithm. The color match prediction method based on theNNMF showed more accurate recipe prediction results than the conventional color matching method for the CPB dye-ing process of cotton knit fabric. Keywords: cold pad batch dyeing, cotton knit, recipe prediction, Newton-Lapson method, non-negative matrix factorization |
