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1. 发明授权

US5512752A Method of determining type of plastics 失效
标题翻译：确定塑料类型的方法
公开(公告)号：US5512752A
公开(公告)日：1996-04-30
申请号：US181517
申请日：1994-01-13
申请人： Katsuaki Aikawa , Tadashi Shiratama
发明人： Katsuaki Aikawa , Tadashi Shiratama
IPC分类号： G01J3/457 , G01N21/35 , G01N21/3563 , G01N21/359 , G01N33/44
CPC分类号： G01N21/359 , G01N21/3563
摘要： A method is provided for determining the type of an unknown plastic including the steps of irradiating an unknown plastic with near-infrared rays within a prescribed measurement wavelength range to measure an absorption spectrum, calculating the differential spectrum of the unknown plastic, measuring the differential spectrum at prescribed measurement intervals, determining the class of the differential spectrum by determining whether each measurement is on a plus-side, a minus-side or any other side, comparing the class of the differential spectrum measurement at each interval with a class of a differential spectrum measurement previously determined for each of the intervals over the range for a plurality of plastics of known types, and determining the type of the unknown plastic as the plastic having the highest class agreement ratio.
摘要翻译：提供了一种用于确定未知塑料的类型的方法，包括以下步骤：在规定的测量波长范围内用近红外线照射未知塑料以测量吸收光谱，计算未知塑料的差分光谱，测量差分光谱以规定的测量间隔，通过确定每个测量是否在正侧，负侧或任何其他侧面来确定差分频谱的类别，将每个间隔处的差分频谱测量的类别与差分类别进行比较先前针对已知类型的多种塑料的范围内的每个间隔先前确定的光谱测量，以及将未知塑料的类型确定为具有最高类一致比的塑料。

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