Classifying – separating – and assorting solids – Precedent preparation of items or materials to facilitate... – Sorting special items or sorting by methods and apparatus...
Patent
1997-04-16
1999-03-16
Bollinger, David H.
Classifying, separating, and assorting solids
Precedent preparation of items or materials to facilitate...
Sorting special items or sorting by methods and apparatus...
209579, 209583, B07C 502
Patent
active
058818863
ABSTRACT:
A method is disclosed for sorting textiles, as is a system that operates in accordance with the method. The method includes steps of (a) providing a plurality of textiles to be sorted, each of the textiles comprising a portion that includes an electromagnetic radiation emitting and amplifying material; for each textile, (b) illuminating at least the portion with laser light that exceeds a threshold fluence; (c) detecting a narrow band laser-like emission of at least one wavelength from the portion in response to the step of illuminating; and (d) sorting the textiles based on the detected laser-like emission. In one embodiment the textile has at least one stitched-in thread, the thread comprising a substrate material and the electromagnetic radiation emitting and amplifying material in combination with scatterers for providing the laser-like emission. In another embodiment the textile has an applied patch containing the electromagnetic radiation emitting and amplifying material. In this case the scatterers can comprise the material of the textile either alone or in combination with the material of the patch. The emission wavelength(s) are selected so as to encode desired information, such as a customer identification, a date the textile was first placed into service, an identification of the vendor of the textile, an identification of the type and/or size of the textile, etc.
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Bollinger David H.
Brown University Research Foundation
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