Radiant energy – Invisible radiant energy responsive electric signalling – Infrared responsive
Patent
1998-01-06
1999-09-14
Hannaher, Constantine
Radiant energy
Invisible radiant energy responsive electric signalling
Infrared responsive
2503418, 25033901, 25033902, 25033907, G01J 342, G01N 2135, G01N 2125
Patent
active
059526602
ABSTRACT:
A method and apparatus for use in the recycling of post consumer or post industrial waste carpet or Polyamide-6 and/or Polyamide-66 containing non-carpet waste utilizes a hand-held portable device utilizing spectroscopic principles to accurately and quickly identify the material of the waste (carpet). The spectrometer envisioned for this task includes an infrared radiation source for illuminating the waste (carpet) sample, a selector for selecting a predetermined number of discrete wavelengths and a detection system to detect reflected radiation within the discrete wavelengths. The selector can be either a plate with a plurality of slots which positionally correspond to locations in a dispersed light beam according to the predetermined discrete wavelengths or a plurality of filters selected to pass the discrete wavelengths. The selection of the discrete wavelengths can either take place before the carpet sample is irradiated or can take place by selecting the discrete wavelengths from reflected radiation.
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Happel Jens
Huth-Fehre Thomas
Kip Berend J.
Kowol Frank
Peters Edo A. T.
Biosensorik
DSM N.V. & Institut fur Chemo
Gagliardi Albert
Hannaher Constantine
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