Profiled Board Zones with Localized Binding Agent Concentration
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Solution Overview
Problem
Existing pressed boards, such as wood fiber boards, often have material compositions that are expensive due to uniform material characteristics, which are not optimized for specific applications like floor panels, and require additional treatments for enhanced features like waterproofness, leading to limited penetration and potential leaching of impregnating agents.
Innovation Solution
A board with a pressed material mass comprising organic and binding agents, where the composition differs in specific zones along the length and width directions, allowing for localized variations in component concentrations or materials, such as increased binding agent or organic material, to achieve enhanced strength, waterproofness, or other properties without additional treatments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If uniform material composition is used throughout the board, then manufacturing simplicity is maintained, but material costs increase and performance is not optimized for specific applications
Solution Approach 1:
The patent applies local quality by creating zones with different material compositions within the board. Specifically, edge zones contain higher concentrations of binding agents and hydrophobic materials for waterproofing and strength, while central zones use standard wood fiber composition for cost-effectiveness. This localized differentiation optimizes performance for specific applications (like floor panel edges requiring waterproofing) without unnecessarily increasing costs throughout the entire board.
2Reliability
If additional impregnating treatments are applied to enhance waterproofness, then waterproof features are improved, but penetration is limited and agents may leach out
Solution Approach 1:
The patent applies preliminary action by incorporating hydrophobic binding agents and waterproofing materials directly into the board composition during the initial pressing stage, rather than applying impregnating treatments after board formation. The binding agents are mixed with wood fibers before pressing, ensuring thorough penetration and binding throughout the material matrix. This prevents subsequent leaching issues and eliminates the need for separate impregnation steps.
3Strength
If higher concentration of binding agent is used throughout the board, then strength and waterproofness are improved, but material costs increase unnecessarily
Solution Approach 1:
The patent applies local quality by concentrating higher binding agent concentrations specifically in edge zones where strength and waterproofing are most critical for floor panel applications. The central zones of the board use standard binding agent concentrations, reducing overall material costs while maintaining sufficient strength for the panel's core structure. This localized approach ensures performance optimization only where needed.
4Ease of manufacture
If homogenous pressed material is used, then manufacturing process is simple, but density varies in thickness direction due to non-uniform pressure and temperature distribution
Solution Approach 1:
The patent applies parameter changes by modifying the composition parameters (binding agent concentration, hydrophobic material content) in different spatial zones of the pressed material before forming the board. Edge zones are formulated with higher binding agent and hydrophobic material content, while central zones use standard composition. This compositional differentiation compensates for the inherent non-uniform pressure and temperature distribution during pressing, ensuring that critical edge areas achieve the desired density and properties despite manufacturing variations.
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 enables the creation of boards with improved features like increased strength and waterproofness in specific zones, reducing costs and eliminating the need for extra treatments, while maintaining uniformity in other areas, thus offering a cost-effective and efficient solution for applications like floor panels.
Implementation Method 1
a second component functioning as a binding agent, more particularly as a binding agent for said first component
Data Source
AI summary
A method for manufacturing a board as well as a profiled element for manufacturing the board. The method including the steps of providing a material mass including an organic material and a binding agent for binding the organic material together, pressing the material mass so as to form the board, and removing material from the material mass in one or more material zones before pressing so as to obtain after pressing a lower density in those zones compared to the remainder of the board.