Plastic and nonmetallic article shaping or treating: processes – Direct application of electrical or wave energy to work – Measuring – testing – or inspecting
Reexamination Certificate
2006-10-31
2006-10-31
Johnson, Christina (Department: 1732)
Plastic and nonmetallic article shaping or treating: processes
Direct application of electrical or wave energy to work
Measuring, testing, or inspecting
C264S410000, C264S488000, C264S492000, C264S040100
Reexamination Certificate
active
07128867
ABSTRACT:
Process for calibration of spectroscopic instrumentation for non-invasive monitoring of resin-loading of furnish-type wood materials, such as particles or fibers for particleboard or medium density fiberboard, respectively. Selection of ranges of wavelengths within a 350 nm to 2500 nm region by providing selection of spectrometers and sensors for wavelength ranges of 350–1000 nm, 1000 to 1800 nm, 1000 to 2500 nm, and 400 to 2200 nm, for use by engineered-wood manufacturing installations. Resin-loaded wood material is exposed to selected VIS/NIR energy and monitored as it moves on-line in relation to calibrated spectroscopic instrumentation; a sensor collects non-absorbed radiation energy reflected by the wood materials. Measurements are processed, in relation to pre-established calibration data, to determine whether the resin-loading is within manufacturing objectives; monitoring and feedback are used to maintain desired specifications.
REFERENCES:
patent: 3196072 (1965-07-01), Wirtz
patent: 5619038 (1997-04-01), Parigi et al.
Congleton Tyler G.
Mbachu Reginald A.
Dynea Chemicals Oy
Huson Monica A
Johnson Christina
Shanley and Baker
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