| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a vinyl chloride discriminating method capable of discriminating vinyl chloride simply and precisely from other plastics and the like. SOLUTION: Waste plastic material containing vinyl chloride is irradiated with a plurality of lights different in wavelength, and intensities of the reflected lights are measured. By obtaining the correlation of the index of the reflected light intensity and the wavelength of the reflected light, negative correlation of at least 98% is recognized in only the vinyl chloride material. By using the correlation, vinyl chloride is discriminated from other plastic material.</p> |
