Patent ID: 7468155

Claim:
Method for calibrating electromagnetic-radiation spectroscopic instrumentation so as to enable use in quantitative measurement of resin-loading of wood-materials during in-line assembly for subsequent bonding during production of a composite wood-product, comprising (A) providing electromagnetic-radiation spectroscopic instrumentation with a wavelength range for penetration of resin-loaded wood material; (B) quantitatively pre-establishing resin-loading of reference-source test-samples of wood-materials of a type selected for in-line assembly, and capable of providing for bonding to produce a composite wood-product; (C) supporting said pre-established resin-loaded test-samples on a conveyance surface capable of establishing a controlled rate of relative movement between said supported test-samples and said spectroscopic instrumentation for irradiating wood-materials of said test-samples; (D) establishing said controlled rate of relative movement for said test-samples simulating a selected in-line controlled-rate of movement of resin-loaded wood-materials being directed in-line for assembly; (E) irradiating said pre-established resin-content test-samples with a selected wavelength range of radiation during relative movement between said spectroscopic instrumentation and said test samples at a selected controlled rate for quantitative measurement of absorption of said selected wavelength range of radiation of said wood-materials of said pre-established resin-content test-samples, and (F) calibrating said spectroscopic instrumentation by providing a calibration curve enabling quantitative analyses of resin-loading of test-sample during said controlled movement of said test samples, by measuring non-absorbed radiation energy within said selected wavelength range of radiation as reflected by said exposed test-samples on said conveyance surface.