Building Panel Bevel Formation by Heating High-Filler Edges
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Solution Overview
Problem
Existing methods face challenges in creating desirable embossings or bevels on building panels with high-filler content, such as Luxury Vinyl Tiles (LVT) and Stone Plastic Composite (SPC) panels, which are typically rigid and difficult to process.
Innovation Solution
A method involving heating an edge portion of the panel and applying pressure to form a bevel in the substrate, which may include a surface layer, using IR, hot air, UV, laser, or ultrasound heating, and optionally cooling to control elasticity and material recovery, with specific pressure and temperature ranges.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If building panels with high inorganic filler content (50-85 wt%) are used to achieve rigidity and durability, then the panel strength and modulus of elasticity are improved, but the ability to form embossings or bevels deteriorates due to the rigid and difficult-to-process nature of the material
Solution Approach 1:
The patent applies local heating to change the temperature parameter of the building panel material, transforming it from a rigid state to a softened state that can be easily formed. The heating softens the polymer-based material and inorganic filler composite, enabling embossing and bevel formation, after which cooling restores the rigid final structure.
Solution Approach 2:
The patent applies preliminary heating to the building panel before the forming operation. By pre-heating the material to a softened state, the subsequent embossing or bevel formation becomes feasible, and the final cooling step locks in the desired shape, achieving the contradiction resolution through staged parameter changes.
2Manufacturing precision
If pressure is applied to form a bevel in the substrate, then the desired shape and dimensions are achieved, but material recovery and elasticity control become challenging
Solution Approach 1:
The patent utilizes phase transition of the material from solid (rigid) to softened state through heating, enabling formability during the transition phase. After pressing to achieve precise bevel dimensions, cooling transitions the material back to solid state, locking in the shape and controlling material recovery by eliminating elastic rebound in the softened state.
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 the formation of bevels with controlled dimensions and aesthetics, enhancing the panel's appearance and allowing for a broader range of materials by managing material elasticity and recovery, while maintaining efficient manufacturing processes.
Implementation Method 1
heating at least an edge portion of an edge of the building panel, along which edge the bevel is to be formed
Implementation Method 2
optionally cooling to control elasticity and material recovery
Data Source
AI summary
A method to manufacture a bevel at least partly along at least one edge of a building panel, such as a floor panel or wall panel, where the building panel includes a substrate having an inorganic filler of an amount of 50-85 wt % and a polymer-based material. The method including heating at least an edge portion of an edge of the building panel, along which edge the bevel is to be formed, and forming the bevel in the edge portion by applying pressure to the portion, where the bevel is at least partly formed in the substrate.