Title:
METHOD AND APPARATUS FOR IDENTIFYING PLASTICS AND/OR THE ADDITIVES THEREIN
Document Type and Number:
WIPO Patent Application WO/2016/124197
Kind Code:
A3
Abstract:
The invention relates to a method for identifying a sample (3) of a plastic material and/or the additives therein, wherein at least some of the plastic material is irradiated with light of at least one wavelength, e.g. by a pulsed light source (2), at least some of the light reflected by the plastic material is detected by the sensor (6) and is analyzed, and the plastic material and/or the additives therein is/are identified on the basis of the result of the analysis. The disclosed method is characterized in that a fluorescence decay time constant of the intrinsic fluorescence of the plastic material and, if applicable, of the additive or additives therein is determined on the basis of the detected light, and the plastic material and/or the additive or additives therein is/are identified on the basis of the determined fluorescence decay time constant.
Inventors:
KRIEG GUNTHER (DE)
FEY DIRK (FR)
BOHLEBER JUERGEN (DE)
LANGHALS HEINZ (DE)
SCHLUECKER THORBEN (DE)
ZGELA DOMINIK (DE)
FEY DIRK (FR)
BOHLEBER JUERGEN (DE)
LANGHALS HEINZ (DE)
SCHLUECKER THORBEN (DE)
ZGELA DOMINIK (DE)
Application Number:
PCT/DE2016/200076
Publication Date:
October 06, 2016
Filing Date:
February 05, 2016
Export Citation:
Assignee:
UNISENSOR SENSORSYSTEME GMBH (DE)
International Classes:
B07C5/342; G01N21/64; B29B17/02; G01J3/44
Foreign References:
| GB2330409A | 1999-04-21 | |||
| DE4231477A1 | 1994-03-24 | |||
| US5329127A | 1994-07-12 | |||
| EP0563998A1 | 1993-10-06 | |||
| US20110232398A1 | 2011-09-29 | |||
| DE4433937A1 | 1996-03-28 | |||
| TWI468653B | 2015-01-11 |
Other References:
HEINZ LANGHALS ET AL: "High Performance Recycling of Polymers by Means of Their Fluorescence Lifetimes*", GREEN AND SUSTAINABLE CHEMISTRY, vol. 04, no. 03, August 2014 (2014-08-01), pages 144 - 150, XP055287985, ISSN: 2160-6951, DOI: 10.4236/gsc.2014.43019
ANONYMOUS: "Fluoreszenzlebensdauer - Wikipedia", 24 July 2012 (2012-07-24), XP055288692, Retrieved from the Internet [retrieved on 20160714]
EDINBURGH INSTRUMENTS LTD.: "Operating Instructions F900", 2004, XP055288367, Retrieved from the Internet [retrieved on 20160714]
ANONYMOUS: "Fluoreszenzlebensdauer - Wikipedia", 24 July 2012 (2012-07-24), XP055288692, Retrieved from the Internet
EDINBURGH INSTRUMENTS LTD.: "Operating Instructions F900", 2004, XP055288367, Retrieved from the Internet
Attorney, Agent or Firm:
ULLRICH & NAUMANN (Heidelberg, DE)
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