Process for the qualitative analysis of plastic particles
US5256880A · kind A · utility
33Cited by
1References
13Claims
0Family size
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Key dates
| Filing date | Jan 24, 1992 |
| Grant date | Oct 26, 1993 |
| Priority date | — |
| Expiry date | Jan 24, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W30/62
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A process and apparatus for the qualitative analysis of particles of various kinds of plastic which comprises passing said particles serially in a predetermined path, irradiating each particle with light of short wavelength from 180 to 500 nm, whereby each particle emits light radiation of a longer wavelength, and detecting such longer wavelength emissions for radiation intensities within a narrow wavelength range to form an emission spectrum, the emission spectrum generating a sorting signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.