NIR Binder Quantification in Wood Particle Mixtures
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Solution Overview
Problem
Existing methods for determining the distribution of powdery binders in wood-based panels are inadequate, leading to unclear distribution assessment, unnecessary raw material consumption, and increased costs due to the lack of continuous, non-destructive, and in-line analysis, particularly for renewable raw material-based binders.
Innovation Solution
A method utilizing near-infrared (NIR) spectroscopy to determine the quantity and composition of powdery binders in mixtures with wood particles, enabling continuous, non-destructive, and in-line analysis without requiring system modifications, using an NIR measuring head to record spectra and correlate them with reference samples for accurate binder quantification.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If powdery binders are used instead of liquid binders, then renewable raw materials can be utilized and water introduction is avoided, but homogeneous distribution assessment becomes difficult and raw material consumption increases
Solution Approach 1:
The patent applies colorimetric methods to detect and assess the distribution of powdery binders on wood particles. By utilizing color changes or color properties of the binder particles, the system enables visual and instrumental assessment of distribution homogeneity, directly resolving the measurement difficulty associated with powdery binders that have similar colors to wood particles
Solution Approach 2:
The patent replaces manual visual assessment with automated optical detection systems. Image analysis cameras and colorimetric sensors substitute human observation, providing objective, quantitative measurement of binder distribution. This mechanical-to-optical substitution enables precise measurement that was previously impossible with powdery binders
2Reliability
If higher dosage of glue powder is used, then minimum strength and swelling values are achieved, but raw material consumption and costs increase
Solution Approach 1:
The patent implements feedback control by continuously monitoring binder distribution and providing real-time information about distribution homogeneity. This feedback enables adjustment of dosing parameters to achieve optimal distribution with minimum necessary binder quantity, preventing both under-dosing (weak products) and over-dosing (waste)
Solution Approach 2:
The patent performs preliminary assessment of binder distribution before panel formation using image analysis and colorimetric detection. This preliminary action allows optimization of binder dosage and distribution patterns before the binding process is complete, ensuring minimum effective dosage is used while achieving required product strength
3Manufacturing precision
If continuous in-line assessment is implemented, then binder distribution can be optimized, but system complexity and measurement requirements increase
Solution Approach 1:
The patent employs measurement systems that serve multiple functions: colorimetric detection, image analysis, distribution assessment, and process control all within a single integrated system. This multi-functionality reduces overall system complexity while achieving precise binder distribution control through in-line measurement
Solution Approach 2:
The measurement system is designed to be self-contained and automated, requiring minimal external intervention. The system automatically captures images, analyzes color distribution, calculates homogeneity metrics, and provides control signals, making the complex measurement process self-service and reducing operational complexity
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables real-time monitoring and control of production processes, reducing raw material consumption, improving product quality, and minimizing production rejects by ensuring homogeneous binder distribution and optimizing production efficiency.
Implementation Method 1
at least one near-infrared radiation (NIR) spectrum is recorded from the mixture of at least one powdery binder and wood particles
Data Source
AI summary
A method for determining the amount of at least one biodegradable powdery binder in a mixture with wood particles. The method comprises the steps of: providing mixtures of at least one powdery binder and wood particles as reference samples, wherein the at least one powdery binder and wood particles are present in the mixtures in quantitatively defined mixing ratios in each case, recording of at least one NIR spectrum of the reference samples, providing a mixture to be measured consisting of at least one powdery binder and wood particles, recording of at least one NIR spectrum of the mixture of the at least one powdery binder with wood particles, and determining the quantitative amount of powdery binder in the mixture of powdery binder and wood particles by comparison with the NIR spectra recorded for the reference samples.