Spectroscopic monitoring of resin-application prior to assembly of composite wood veneer product

Method for spectroscopically monitoring resin applied to a planar surface of veneer-wood sheets during travel in an assembly line. Spectroscopic instrumentation for monitoring applied resin is calibrated by measurements of predetermined resin applications to reference-test-samples, so as to provide...

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Bibliographische Detailangaben
Hauptverfasser:	CONGLETON TYLER G, MBACHU REGINALD A
Format:	Patent
Sprache:	eng
Schlagworte:	ACCESSORY MACHINES OR APPARATUS AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL ATOMISING APPARATUS INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES MEASURING NAILING OR STAPLING MACHINES IN GENERAL NOZZLES PERFORMING OPERATIONS PHYSICS SAFETY DEVICES, e.g. THOSE FOR SAWS SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS SPRAYING APPARATUS SPRAYING OR ATOMISING IN GENERAL TESTING TRANSPORTING WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL
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Beschreibung
Zusammenfassung:	Method for spectroscopically monitoring resin applied to a planar surface of veneer-wood sheets during travel in an assembly line. Spectroscopic instrumentation for monitoring applied resin is calibrated by measurements of predetermined resin applications to reference-test-samples, so as to provide a pre-determined relationship enabling monitoring of applied resin, during commercial production of a veneer-wood product using the visible light spectrum and near infrared extending to 2500 nm. Monitoring of selected radiation absorbance by the applied resin is carried out by spectroscopic measurement of non-absorbed electromagnetic radiation, as reflected back by the wood-veneer matrix; selected wavelengths are utilized for determining average resin-weight per designated surface area of a sheet. Selecting penetrative wavelengths enables use of multiple types of hardwood and softwood for veneer sheets during in-line production, providing for separate calibration for selected wood type and resin combinations measuring instrumentation.