Thermoplastic Wear-Resistant Foil with a Hard-Particle Interlayer
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Solution Overview
Problem
Luxury Vinyl Tiles and Planks (LVT) floor panels suffer from inferior wear resistance, with their wear layers and coatings being easily worn down, leading to scratches and loss of transparency, and the production process is complex.
Innovation Solution
A method involving the application of wear-resistant particles between two thermoplastic foils, adhered together to form a wear-resistant foil, which replaces conventional wear layers and coatings, using different thermoplastic materials for each foil to enhance properties like stain and scratch resistance, and is produced through processes like extrusion and calendering.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional wear layer and coating structure is used in LVT floor panels, then the basic protective function is provided, but the wear resistance is inferior and the layers are easily worn down
Solution Approach 1:
The patent combines the wear layer and the protective coating into a single integrated layer by incorporating particles (such as aluminum oxide, silicon carbide, or diamond) directly into the polymer matrix of the wear layer. This eliminates the need for a separate coating layer while providing enhanced wear resistance, thus resolving the contradiction between improving reliability and reducing device complexity.
Solution Approach 2:
The patent creates a composite material by dispersing hard particles (aluminum oxide, silicon carbide, diamond, etc.) within a thermoplastic polymer matrix (PVC, polyurethane, polyester, etc.). This composite structure provides superior wear resistance compared to conventional homogeneous wear layers, improving reliability without requiring additional layers.
2Reliability
If multiple separate layers (wear layer and coating) are applied to achieve wear resistance, then protective function is provided, but the production process becomes complex
Solution Approach 1:
The patent merges the application of the wear layer and coating into a single extrusion or calendering process where particles are mixed with the polymer material before forming the layer. This eliminates the need for separate coating application and curing steps, simplifying the production process while maintaining durability.
Solution Approach 2:
The patent incorporates particles into the polymer material during the extrusion or compounding stage, before the wear layer is formed and applied to the floor panel. This preliminary incorporation eliminates subsequent coating steps, making the manufacturing process easier while ensuring uniform particle distribution for optimal durability.
3Ease of manufacture
If conventional PVC wear layers are used, then cost-effectiveness is maintained, but scratch resistance and transparency are compromised
Solution Approach 1:
The patent creates a composite wear layer by combining thermoplastic polymers (PVC, polyurethane, polyester) with hard particles (aluminum oxide, silicon carbide, diamond). This composite structure maintains cost-effectiveness using common materials while dramatically improving scratch resistance. The particles are transparent or translucent, preserving optical clarity.
Solution Approach 2:
The patent applies local quality enhancement by incorporating hard particles specifically in the wear layer where wear resistance is needed, while keeping other layers (decor layer, core) made of conventional materials. This targeted approach improves scratch resistance and maintains transparency only where necessary, without increasing overall cost.
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 method provides a wear-resistant foil with improved durability, simplifies the production process, and maintains transparency, while reducing the number of layers and coatings, thereby enhancing the overall wear resistance and cost-effectiveness of LVT products.
Implementation Method 1
heating and pressing the layers to each other
Implementation Method 2
adhering the first foil to the second foil
Data Source
AI summary
A method to produce a wear resistant foil, including providing a first foil including a first thermoplastic material, applying wear resistant particles on the first foil, applying a second foil including a second thermoplastic material on the first foil, and adhering the first foil and the second foil to each other to form a wear resistant foil.