WO2002028954A1 - Materiau contenant du plastique, du verre, des textiles, ou du papier, portant un marqueur en proche infrarouge, et procede d'identification de ce materiau - Google Patents

Materiau contenant du plastique, du verre, des textiles, ou du papier, portant un marqueur en proche infrarouge, et procede d'identification de ce materiau Download PDF

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Publication number
WO2002028954A1
WO2002028954A1 PCT/EP2001/010274 EP0110274W WO0228954A1 WO 2002028954 A1 WO2002028954 A1 WO 2002028954A1 EP 0110274 W EP0110274 W EP 0110274W WO 0228954 A1 WO0228954 A1 WO 0228954A1
Authority
WO
WIPO (PCT)
Prior art keywords
nir
marker
nir marker
added
absorption
Prior art date
Application number
PCT/EP2001/010274
Other languages
German (de)
English (en)
Inventor
Hans-Jürgen BACH
Wolfgang Holley
Original Assignee
Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. filed Critical Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
Publication of WO2002028954A1 publication Critical patent/WO2002028954A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
    • B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
    • B07C5/34—Sorting according to other particular properties
    • B07C5/342—Sorting according to other particular properties according to optical properties, e.g. colour
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/01—Use of inorganic substances as compounding ingredients characterized by their specific function

Definitions

  • Plastic, glass, textile or paper-containing material provided with an NIR marker and method for identifying this material
  • the invention is based on a method for identifying materials with NIR spectrometry on the basis of the characteristic absorption behavior of marker substances which are added to the materials during the processing process.
  • the characteristic is based on at least one dominant band in the NIR absorption spectrum.
  • Spectro etrical methods are increasingly used in process analytics as detection techniques in material flow systems and in process engineering. They often provide material parameters that serve as a signal for recognizing the presence or absence of certain materials or objects in the process or as separation criteria in sorting and separating processes.
  • Spectral (separation) criteria In addition to conventional criteria (e.g. mass density, particle size, (electro-) magnetic properties), they are established and enable, for example, the automated separation of mixtures of substances that cannot be separated using conventional criteria or detection methods (e.g. processing in mining: detection and separation of the target mineral by dyeing - or absorption band detection on the rock particles).
  • NIR spectrometers Under process technology conditions, NIR spectrometers have proven to be very reliable, robust detection systems for generating process measurement, control, regulation and monitoring signals (see Converter 33 (5), (1996), 7-8). Corresponding process spectrometers and the sorting units based on them have been state of the art in plastic sorting for a few years, e.g. for the purpose of waste treatment.
  • Spectro etrical detection methods always find their limits where substances with a similar spectral "fingerprint" are to be distinguished quickly and with little error.
  • the possibility of using labeling substances with dominant NIR spectral properties is known in one case from the patent literature.
  • US 5,397,819 and US 5,461,136 describe the use of organic NIR fluorophores for marking plastics.
  • the use of these NIR-active markers is limited to covalently integrating the NIR fluorophore into the polymer backbone or to distribute (i.e., dissolve) it in a molecularly dispersed manner in the polymer.
  • the detection of the marker is limited to NIR fluorescence spectrometry.
  • Plastics are often components of more complex ones Mixed waste / even pure plastic waste generally consists of several types of plastic (PE, PP, PS, PVC, etc.) and almost always of different types of plastic. Plastic grades are differently borrowed additives that are made of the same polymer. Common organic-based plastic additives (such as plasticizers, lubricants, antioxidants, UV absorbers, dyes, etc.) in the amounts usually used show only low NIR spectral signals. They are generally also lacking other properties that can be determined process-analytically with reasonable effort. To make matters worse, the abundance of plastic additives available on the market and the requirement profiles for plastics mean that there is an almost unmanageable combination of additives in different proportions in the different types of plastic.
  • the marking according to the invention is particularly advantageous when materials or objects are to be recognized or differentiated which do not have a characteristic or sufficiently distinguishable absorption or reflection spectrum in the NIR range.
  • a further advantage is that materials or objects marked according to the invention can also be recognized by their NIR spectrum if this spectrum is overlaid by substances that are adhering or mixed with the materials or objects.
  • more than one type of material or type of objects marked according to the invention can be recognized in parallel and also differentiated from one another. If more than one marker is used according to the invention on the same material or the same object, more complex information can also be stored in the material or on the object and recognized by means of NIR in the process, e.g. the date of manufacture, the intended application or the recipient of the material or object, its material composition, etc.
  • the detection of the marker is also possible if the base material has absorptions in the area of the marker, since the markers to be used according to the invention have much more intense signals (ie a larger absorption coefficient) than all additives / additives normally used in plastics processing.
  • the dominant band can be clearly recognized spectrally even in the case of an overlay with the NIR absorption spectra of the material and the substances associated with the material.
  • the NIR marker comprises at least one dominant-NIR absorption band having a half width of each less than 400 cm -1, more preferably less than 150 cm "1, comprising.
  • Examples of minerals with a NIR spectrum suitable for the use according to the invention are talc, kaolin and basic magnesium carbonate. Additional selection criteria for a marker substance are the heat resistance / physicochemical stability including structural stability of the marker with regard to the processing conditions when doping a material or when applying the marker to an object, as well as physical properties of the powders that can be produced from such minerals (agglomeration behavior, dispersing agent - hold in carriers, compatibility with materials, etc.).
  • the marking according to the invention can be used as a dopant on various materials, preferably on all types of synthetic thermoplastics, thermosets, elastomers and composite materials and articles made therefrom, by including the NIR marker in the matrix formed from the material.
  • this is not a covalent attachment of the marker to the polymer.
  • biopolymers such as starch, proteins, cellulose and their chemical modifications, polylactic acid, polycaprolactone and other biodegradable polymers of native or synthetic origin.
  • the NIR marker is preferably applied to the material in the form of a coating, the coating e.g. can be applied in the form of a varnish, an adhesive or other adhesion promoter.
  • the marker substance according to the invention can also be part of one or more layers in a composite structure (e.g. composite foil, object made from composite foil) or it can be introduced between the layers of a composite.
  • a composite structure e.g. composite foil, object made from composite foil
  • the marking according to the invention is applicable to all objects on the surface of which the marker according to the invention can be applied by means of a suitable carrier.
  • the method according to the invention is based on using dominant NIR spectral properties of certain NIR-active substances in order to use it to mark materials made of plastic, glass or paper-containing materials or composite materials therefrom
  • NIR spectrometric methods to recognize tral The purpose of the recognition is to distinguish materials or objects marked according to the invention from materials or objects not marked or otherwise marked or to be able to automatically detect the presence or absence of the material or object marked according to the invention in process engineering processes or in material flow systems.
  • the procedure according to the invention is such that a substance is added to the material during the processing process which has at least one dominant band in the NIR absorption spectrum, which also overlaps with the NIR absorption spectra of the material and that associated with the material
  • Substances is spectrally recognizable, or after the processing is completed, this substance is attached to the material.
  • This material can then e.g. in separation or sorting processes based on the characteristic absorption behavior of the NIR marker can later be identified with NIR spectrometry.
  • the detection by an “NIR eye” serves in particular to generate an (electrical or other) signal which indicates the presence or absence of a specific material or a specific type of objects in a process or at a specific point in the process.
  • Such signals can be used, for example, for the solution of monitoring, control and regulating tasks in the context of process control technology.
  • signals provide control and regulating criteria for sorting and separating processes in process engineering. This is a clear advantage over the current state of the technique.
  • the surface treatment of the material in the form of a coating containing the marker or consisting of the marker which e.g. is applied by means of PVD or CVD processes, it also being possible to coat on a carrier material which is subsequently connected to the material,
  • a coated or uncoated flat carrier e.g. a label that is applied to the material or object to be marked.
  • the spectrometric principle to be used in accordance with the invention to detect this property is based on the recording and evaluation of the specific absorption and / or the reflection of non-absorbed radiation in the wavelength range of the near infrared. Detection is usually carried out in reflection mode. NIR process spectrometers required for this are state of the art.
  • a material doped by manufacturer A according to the invention can be distinguished according to its origin compared to the same materials that come from other manufacturers.
  • a material compound that differs chemically only structurally or in terms of minor components in its additives from other compounds of the same material can be identified with the aid of the marking according to the invention and separated by sorting from mixtures according to this. This is the most important prerequisite for the production of high-quality recyclate from the corresponding material waste.
  • the bottler A uses a marker according to the invention for the plastic beverage bottles he uses (for example as a component of the printing ink for barcode printing, with which each bottle is provided in the course of the filling process) in order to “his” bottles in the course of the retribution be able to identify and sort them in returnable packaging or for bottler-specific recycling measures in the one-way packaging area.
  • the marking according to the invention could be used in the future when sorting out certain qualities of the packaging plastic polyethylene terephthalate (PET) from post-consumer packaging waste:
  • PET packaging plastic polyethylene terephthalate
  • a "high quality" recycling pool could be formed, the bottlers subject to disposal under certain conditions (bottle material Criteria) (keyword: "marking license”).
  • PET is predicted to have a large market potential for plastic beverage bottles - however, consumer acceptance of the material will be high Dimensions depend on a recognized high quality recycling of PET.
  • FIG. 1 This is the NIR spectrum of a PET bottle marked with talc-containing acrylic lacquer
  • talc (a), basic magnesium carbonate (b) and kaolin (c)

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)

Abstract

L'invention concerne un procédé d'identification de matériaux contenant du plastique, du verre, des textiles, ou du papier par spectrométrie en proche infrarouge sur la base du comportement d'absorption caractéristique de marqueurs additionnés aux matériaux lors du processus de traitement. Cette caractéristique est fondée sur au moins une bande dominante dans le spectre d'absorption en proche infrarouge, ladite bande pouvant également être reconnue spectralement en superposition avec les spectres d'absorption en proche infrarouge du matériau et des substances associées audit matériau.
PCT/EP2001/010274 2000-10-05 2001-09-06 Materiau contenant du plastique, du verre, des textiles, ou du papier, portant un marqueur en proche infrarouge, et procede d'identification de ce materiau WO2002028954A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10049404A DE10049404C2 (de) 2000-10-05 2000-10-05 Mit einem NIR-Marker versehener kunststoff-, glas-, textil- oder papierhaltiger Werkstoff und Verfahren zur Identifizierung dieses Werkstoffs
DE10049404.8 2000-10-05

Publications (1)

Publication Number Publication Date
WO2002028954A1 true WO2002028954A1 (fr) 2002-04-11

Family

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PCT/EP2001/010274 WO2002028954A1 (fr) 2000-10-05 2001-09-06 Materiau contenant du plastique, du verre, des textiles, ou du papier, portant un marqueur en proche infrarouge, et procede d'identification de ce materiau

Country Status (2)

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DE (1) DE10049404C2 (fr)
WO (1) WO2002028954A1 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1021182C2 (nl) * 2002-07-30 2004-02-03 Xpar Vision B V Analysesysteem en werkwijze voor het analyseren en controleren van een productieproces voor glasproducten.
FR2860325A1 (fr) * 2003-09-29 2005-04-01 Arjo Wiggins Secutity Sas Feuille authentifiable par spectroscopie proche infrarouge et methode d'authentification
AU2002217061B2 (en) * 2000-11-29 2005-04-28 Novartis Ag Use of bisphosphonates for pain treatment
FR2907136A1 (fr) * 2006-10-12 2008-04-18 Arjowiggins Soc Par Actions Si Ruban de securite, feuille et document de securite le comportant et procede d'incorporation
WO2012045567A1 (fr) * 2010-10-05 2012-04-12 Bundesdruckerei Gmbh Procédé de reconnaissance d'un document de valeur et/ou de sécurité
WO2015136431A1 (fr) 2014-03-13 2015-09-17 Arjowiggins Security Document de securite et particules synthetiques
EP2654977A4 (fr) * 2010-12-22 2017-06-21 Titanium Metals Corporation Système et procédé pour inspecter et trier des particules et procédé pour les qualifier avec des particules de germe
WO2019180438A3 (fr) * 2018-03-21 2019-12-12 Philip Sutton Procédé de recyclage et traceur pour un produit recyclable

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012214381A1 (de) 2012-08-13 2014-02-13 Krones Ag Markierungsvorrichtung zum Markieren von Behältern, Behälterbehandlungsvorrichtung und ein Verfahren zum Markieren von Behältern
DE102020113252A1 (de) 2020-05-15 2021-11-18 Sensor-Instruments Entwicklungs- Und Vertriebs-Gmbh Verfahren und Vorrichtung zur Sortierung von Kunststoffobjekten

Citations (5)

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Publication number Priority date Publication date Assignee Title
US5461136A (en) * 1991-11-08 1995-10-24 Eastman Chemical Company Method for tagging thermoplastic materials with near infrared fluorophores
JPH0873653A (ja) * 1994-09-09 1996-03-19 Daicel Chem Ind Ltd 近赤外線吸収透明樹脂組成物及びその成形体
JPH09208775A (ja) * 1996-01-30 1997-08-12 Kureha Chem Ind Co Ltd 塩化ビニル系樹脂組成物
JPH09263717A (ja) * 1996-01-25 1997-10-07 Mitsui Toatsu Chem Inc 近赤外線吸収剤分散水性塗料およびその用途
JP2000159956A (ja) * 1998-11-30 2000-06-13 Toray Ind Inc シートまたはカード用熱可塑性樹脂組成物

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4213323A1 (de) * 1992-04-23 1993-10-28 Bayer Ag Verbessertes Verfahren zur Kennzeichnung von Kunststoffen
DE4401207A1 (de) * 1994-01-18 1995-07-20 Tobias Fey Kunststoffidentifizierung von Kunststoffverpackungen
DE19522397A1 (de) * 1995-06-23 1997-01-02 Merck Patent Gmbh Lasermarkierbare Kunststoffe

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5461136A (en) * 1991-11-08 1995-10-24 Eastman Chemical Company Method for tagging thermoplastic materials with near infrared fluorophores
JPH0873653A (ja) * 1994-09-09 1996-03-19 Daicel Chem Ind Ltd 近赤外線吸収透明樹脂組成物及びその成形体
JPH09263717A (ja) * 1996-01-25 1997-10-07 Mitsui Toatsu Chem Inc 近赤外線吸収剤分散水性塗料およびその用途
JPH09208775A (ja) * 1996-01-30 1997-08-12 Kureha Chem Ind Co Ltd 塩化ビニル系樹脂組成物
JP2000159956A (ja) * 1998-11-30 2000-06-13 Toray Ind Inc シートまたはカード用熱可塑性樹脂組成物

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DATABASE WPI Section Ch Week 199750, Derwent World Patents Index; Class A82, AN 1997-545620, XP002191714 *
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DATABASE WPI Section Ch Week 200103, Derwent World Patents Index; Class A13, AN 2001-018707, XP002191712 *

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2002217061B2 (en) * 2000-11-29 2005-04-28 Novartis Ag Use of bisphosphonates for pain treatment
NL1021182C2 (nl) * 2002-07-30 2004-02-03 Xpar Vision B V Analysesysteem en werkwijze voor het analyseren en controleren van een productieproces voor glasproducten.
WO2004011935A1 (fr) * 2002-07-30 2004-02-05 Xpar Vision B.V. Systeme et procede d'analyse pour mesurer et controler un procede de production
AU2003261017B2 (en) * 2002-07-30 2008-01-03 Centrum Voor Technische Informatica B.V. Analytical system and method for measuring and controlling a production process
FR2860325A1 (fr) * 2003-09-29 2005-04-01 Arjo Wiggins Secutity Sas Feuille authentifiable par spectroscopie proche infrarouge et methode d'authentification
WO2005034049A1 (fr) * 2003-09-29 2005-04-14 Arjowiggins Security Feuille authentifiable par spectroscopie proche infrarouge et methode d'authentification
FR2907136A1 (fr) * 2006-10-12 2008-04-18 Arjowiggins Soc Par Actions Si Ruban de securite, feuille et document de securite le comportant et procede d'incorporation
WO2012045567A1 (fr) * 2010-10-05 2012-04-12 Bundesdruckerei Gmbh Procédé de reconnaissance d'un document de valeur et/ou de sécurité
EP3059713A1 (fr) * 2010-10-05 2016-08-24 Bundesdruckerei GmbH Procede de verification de l'authenticite d'un document de securite et/ou de valeur
EP2654977A4 (fr) * 2010-12-22 2017-06-21 Titanium Metals Corporation Système et procédé pour inspecter et trier des particules et procédé pour les qualifier avec des particules de germe
WO2015136431A1 (fr) 2014-03-13 2015-09-17 Arjowiggins Security Document de securite et particules synthetiques
WO2019180438A3 (fr) * 2018-03-21 2019-12-12 Philip Sutton Procédé de recyclage et traceur pour un produit recyclable
US12090520B2 (en) 2018-03-21 2024-09-17 Philip Sutton Recycling method and taggant for a recyclable product

Also Published As

Publication number Publication date
DE10049404C2 (de) 2003-01-30
DE10049404A1 (de) 2002-04-25

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