Plastic and nonmetallic article shaping or treating: processes – Direct application of electrical or wave energy to work – Measuring – testing – or inspecting
Reexamination Certificate
2004-12-13
2008-12-23
Huson, Monica A (Department: 1791)
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
07468155
ABSTRACT:
Calibrating visual (VIS) and near infra red (NIR) spectroscopic instrumentation for quantitative measurement of resin-loading of prepared wood materials, as moving in an assembly-forming line, for subsequent pressing under heat and pressure for manufacture of engineered-composite wood product. Feedback of measured data of resin-loading, during in-line assembly operations, enables maintaining consistent resin-loading and optimizes resin usage. Calibration of VIS/NIR spectroscopic instrumentation can be carried out on equipment simulating in-line movement of pre-established reference-source test-samples; or, can be carried out during on-line movement of wood-material test samples. The developed calibration method removes absorptive effects at wavelengths for constituents other than resin, such as the moisture content of the wood-materials and of the resin, while maintaining accurate and prompt VIS/NIR spectroscopic measurements of resin-loading in a continuous assembly line.
REFERENCES:
patent: 3196072 (1965-07-01), Wirtz
patent: 5619038 (1997-04-01), Parigi et al.
patent: 6461743 (2002-10-01), Tanzer et al.
Congleton Tyler G.
Mbachu Reginald A.
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