Sealed WPC Panel Edge via Thermal Treatment
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Solution Overview
Problem
Decorative panels made from wood plastic composite (WPC) materials face swelling issues due to moisture exposure, particularly at cut or profiled edges where wood fibers are exposed, leading to potential damage.
Innovation Solution
A decorative WPC panel with a profiled or cut edge featuring a substantially sealed surface, achieved through thermal treatment that partially melts the WPC material near the surface, preventing moisture penetration and fiber exposure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the plate-shaped carrier is processed by cutting or profiling to create panels with functional profiles, then the panels can be connected during assembly to provide a contiguous surface, but wood fibers of the WPC material are exposed at the cutting surfaces which may swell when exposed to moisture leading to damage of the panel
Solution Approach 1:
The patent applies preliminary action by sealing the cut edges and profiles through thermal treatment before the panels are installed and exposed to moisture. The melting process closes the porous structure of the WPC material at the edges, preventing future moisture ingress that would cause swelling and damage.
Solution Approach 2:
The patent utilizes parameter changes by applying thermal energy to change the physical state of the WPC material at the cut surfaces. The heat treatment melts the thermoplastic binder in the WPC, transforming the porous cut surface into a dense, sealed surface that resists moisture penetration while maintaining the functional profile for assembly connectivity.
2Reliability
If thermal treatment is applied to seal the surface of the profile and cut edge, then the WPC material is partially melted and the surface is sealed preventing moisture penetration, but additional processing steps and energy consumption are required
Solution Approach 1:
The patent merges the profiling/cutting operation with the sealing operation into a single integrated process step. The thermal treatment is applied immediately after or during the cutting/profileing operation, combining two previously separate operations (cutting then sealing) into one continuous process, thereby reducing overall process complexity despite adding a thermal treatment function.
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
The sealed surface significantly reduces swelling and associated damage from moisture exposure, enhancing the durability and water resistance of the panels.
Implementation Method 1
subjecting a surface of the introduced profile and/or cut edge to a thermal treatment to at least partially melt the WPC material in the region of the profile and the surface is sealed
Implementation Method 2
subjecting a surface of the introduced profile and/or cut edge to a thermal treatment
Data Source
AI summary
A decorative panel comprising a plate-shaped carrier made of a wood plastic composite (WPC) material, wherein the plate-shaped carrier comprises a profile and/or a cut edge in at least one edge region, and wherein the profile and/or the cut edge has a substantially sealed surface. A method for producing such panel including a step of subjecting a surface of a profile and/or cut edge to a thermal treatment to at least partially melt the WPC material in the region of the profile and seal the surface.