Basis examination for nondestructive qualitative analysis of textile by infrared absorption features

The descriptive labels of textile products are obligated in Household Goods Quality Labeling law. The composition display is managed by identification and quantitative analysis of fiber mixtures in JIS (Japan Industrial Standards). But, this JIS method is the destructive inspection, and a lot of time is necessary for the analysis. In this study, using cotton, polyester and wool, we examined the possibility of qualitative analysis of fiber mixtures by Infrared spectroscopy and SIMCA (Soft Independent Modeling of Class Analogy). The identification technique that we propose is nondestructive and a prompt method. Result of using this method, we obtained feature spectral form of each fiber. And using the measuring spectrum for SIMCA, high distinction rate was obtained. This result is underqualify for practical use, but we was able to find out the possibility of nondestructive identification of fiber mixtures by IR absorption spectrum and SIMCA.