Abrasion-Resistant Wood Panel Production via Wet-on-Wet Resin Coating
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Solution Overview
Problem
Existing methods for applying abrasion-resistant particles to wood-based panels face issues such as sedimentation, inhomogeneous coatings, increased material consumption, and health hazards due to corundum dust, leading to inefficiencies and higher production costs.
Innovation Solution
A method involving the application of a first liquid resin layer to the panel without drying, followed by uniform sprinkling of abrasion-resistant particles, which then sink into the resin, and subsequent application of additional resin layers, with the use of a roller to collect and reapply excess particles, ensuring even distribution and reducing particle loss.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If corundum-containing melamine resin is applied to the surface, then wear resistance is improved, but sedimentation occurs causing deposits in tanks, pumps, pipes and roller application units
Solution Approach 1:
The patent uses a circulation system with a pump and filter as an intermediary mechanism to continuously move the resin formulation through the system, preventing sedimentation by maintaining constant motion and allowing periodic removal of settled particles through filtration, thus eliminating deposits in tanks, pumps, and pipes while maintaining wear resistance
Solution Approach 2:
The patent implements continuous circulation of the corundum-containing resin formulation through the application system using a pump, ensuring that the resin remains in constant motion during the coating process. This continuous action prevents sedimentation and maintains homogeneous distribution of abrasive particles throughout the resin, eliminating the need for frequent cleaning of system components
2Strength
If higher dosage of corundum is applied to achieve certain wear value, then wear resistance is improved, but transparency deteriorates particularly in dark decors
Solution Approach 1:
The patent optimizes the concentration of corundum particles in the resin formulation to achieve the minimum effective dosage required for the desired wear class (AC3, AC4, or AC5). By precisely controlling particle concentration and size distribution, the patent achieves adequate wear protection while minimizing the impact on optical properties, thereby maintaining transparency in dark decors without sacrificing necessary wear resistance
3Stability of the object's composition
If corundum particles are sprinkled onto liquid resin layer, then sedimentation is avoided, but particles lie loosely on top and are blown off by air flows causing wear in downstream system parts
Solution Approach 1:
The patent incorporates corundum particles into the resin formulation before application, allowing the particles to be thoroughly mixed and uniformly distributed within the liquid resin. This preliminary incorporation ensures that particles are embedded in the resin matrix rather than lying loosely on the surface, preventing them from being blown off by air flows in downstream equipment while maintaining stable composition
Solution Approach 2:
The patent creates a composite resin formulation by combining corundum particles with melamine resin in a controlled manner. The composite structure ensures that abrasive particles are integrated into the resin matrix, providing both wear resistance and stability. The composite material maintains particle distribution stability while preventing particle loss during subsequent drying and processing operations
4Strength
If corundum particles are applied to achieve high wear resistance, then abrasion resistance is improved, but health risks to employees increase due to dust distribution in production hall
Solution Approach 1:
The patent implements continuous circulation of the corundum-containing resin through the application system, ensuring particles remain suspended in the liquid resin throughout the process. This continuous motion prevents particle settlement and minimizes dust generation during application, reducing health risks to employees while maintaining high abrasion resistance in the final product
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
This approach enhances wear resistance, reduces material consumption and dust pollution, extends equipment lifespan, and lowers production costs by preventing particle loss and ensuring homogeneous particle distribution.
Implementation Method 1
the differences in density between the melamine resin and the corundum cause problems due to sedimentation
Implementation Method 2
subsequent drying of the structure of the first resin layer and second resin layer on the upper side of the wood-based material board in at least one drying device
Data Source
Figure 1
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AI summary
The present invention relates to a method for producing an abrasion-resistant wood composite board having an upper side and an underside, wherein at least one decorative layer, in particular in the form of a printed decoration, and a protective layer made from a not yet fully set resin are provided on the upper side, the method comprising the following steps: (i) applying at least one first resin layer to the upper side of the wood composite board provided with the decorative layer and the protective layer, wherein the wood composite board provided with the protective layer and decorative layer is not heated in a dryer prior to the first resin layer being applied, (ii) uniform scattering of abrasion-resistant particles onto the first resin layer on the upper side of the wood composite board; wherein the first resin layer provided with the abrasion-resistant particles on the upper side of the wood composite board is not dried following the application, and (iii) applying at least one second resin layer to the first, moist resin layer provided with the abrasion-resistant particles on the upper side of the wood composite board, (iv) subsequent drying of the construction made from the first resin layer and second resin layer on the upper side of the wood composite board in at least one drying apparatus. The present invention likewise relates to a production line for implementing said method.