Patent ID: 7130040
Filing Date: 2006-10-31
Classification: G01N

Abstract:
1. A method for the continuous determination of the properties of a flow of wood fibers for use in the production of fiberboard comprising determining reference value characteristics for calibration samples of said fibers, determining predetermined relationships between said reference value characteristics relating to said properties and measured spectral values for said fibers utilizing multivariate statistical regression methods, measuring reflectance spectral values for said fibers illuminated by light, and determining said fiber characteristics relating to said properties from said measured spectral values utilizing said predetermined relationships, wherein said plurality of said fiber characteristics includes the resin content, the fiber moisture content, and the optical properties of said flow of wood fibers, said flow of wood fibers being in a fiber preparation process which is controlled based on said fiber characteristics, wherein the wood fibers include a moisture content of approximately from between 10% to 20%.