METHOD FOR SORTING FLEXIBLE POLYURETHANE FOAMS

A method for sorting flexible polyurethane foams including: a) providing two or more calibration samples of conventional flexible polyurethane foams, two or more calibration samples of high resilience (HR) flexible polyurethane foams, and two or more calibration samples of viscoelastic flexible poly...

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Bibliographische Detailangaben
Hauptverfasser:	SEGURA FERNÁNDEZ, SONIA, DOMÍNGUEZ RAMOS, ENRIQUE, RUBIO MORENO, MIGUEL, CARVAJAL GONZÁLEZ, FRANCISCO JAVIER
Format:	Patent
Sprache:	eng
Schlagworte:	INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES MAKING GRANULES OR PREFORMS MEASURING PERFORMING OPERATIONS PHYSICS POSTAL SORTING PREPARATION OR PRETREATMENT OF THE MATERIAL TO BESHAPED RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIALCONTAINING PLASTICS SEPARATING SOLIDS FROM SOLIDS SORTING SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTEDPIECE-MEAL, e.g. BY PICKING TESTING TRANSPORTING WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:	A method for sorting flexible polyurethane foams including: a) providing two or more calibration samples of conventional flexible polyurethane foams, two or more calibration samples of high resilience (HR) flexible polyurethane foams, and two or more calibration samples of viscoelastic flexible polyurethane foams, and obtaining a mid-infrared (MIR) spectrum of each calibration sample; b) carrying out a spectral pre-processing of the spectra of all the calibration samples and, then a first PCA to define a first library; c) carrying out a spectral pre-processing of the infrared spectra of conventional and HR calibration samples and, then a second PCA to define a second library; d) obtaining the MIR spectrum of a sample of polyurethane foam and, based on the first and second libraries, classifying the sample of polyurethane foam as a conventional, HR or viscoelastic polyurethane foam, or as a foam that is neither a conventional, a HR or a viscoelastic polyurethane foam.