Polystyrene Foam Tile Backer Board with Composite Face
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Solution Overview
Problem
Traditional structural panels used in wet environments like showers and baths are heavy, brittle, and require additional waterproofing, making them difficult to transport, handle, and install while providing adequate waterproofing and tile adhesion.
Innovation Solution
A lightweight structural panel with a polystyrene foam core and a composite face structure that includes a waterproof film layer and non-woven fabric for enhanced adhesion and resistance to water penetration, featuring a laminated structure with a central film layer and copolymer layers for stability and adhesion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional structural panels (water resistant drywall or cementitious panels) are used, then waterproofing and tile adhesion are provided, but the panels are heavy and require additional waterproofing coating or membrane
Solution Approach 1:
The patent uses a composite structure combining polystyrene foam core with waterproof membrane layers and reinforcing mesh. This composite material approach provides waterproofing functionality while maintaining lightweight properties, eliminating the need for additional waterproofing coatings required by traditional heavy panels.
Solution Approach 2:
The panel integrates multiple functions into a single product: the polystyrene foam core provides structural support and insulation, the waterproof membrane provides water resistance, and the reinforcing mesh provides structural integrity. This multi-functional design eliminates the need for separate waterproofing coatings that traditional panels require.
2Strength
If traditional structural panels are used, then structural support is provided, but the panels are brittle and difficult to transport and handle
Solution Approach 1:
The patent incorporates a flexible waterproof membrane and thin polystyrene foam core that provides structural support without brittleness. This flexible construction makes the panel easier to transport and handle compared to traditional brittle cementitious panels, while still providing adequate structural support for tile installation.
Solution Approach 2:
The composite structure of polystyrene foam core with waterproof membrane and reinforcing mesh creates a panel that is both strong and flexible. The foam core provides structural support, while the membrane and mesh layers add flexibility and resistance to brittleness, improving ease of transport and handling.
3Weight of moving object
If lightweight foam core is used, then weight is reduced and ease of installation is improved, but nail and screw pull through resistance may be compromised
Solution Approach 1:
The patent combines polystyrene foam core with waterproof membrane layers and reinforcing mesh to create a composite structure. The foam core provides lightweight structural support, while the membrane and mesh layers work together to enhance nail and screw pull-through resistance, compensating for the lower density of the foam material.
Solution Approach 2:
The reinforcing mesh is strategically positioned within the composite structure to provide localized strength at fastening points. This local reinforcement ensures adequate nail and screw pull-through resistance in critical areas while maintaining the overall lightweight property of the foam core structure.
Data Source
AI summary
A moisture resistant composite backing board that includes a polystyrene foam core and a composite face structure laminated to each face of the foam core. The composite face structure includes an outer non-woven fabric layer; a central film layer; and an inner film layer, wherein the central film layer and the inner film layer include distinct materials having distinct properties. The composite face structure is laminated to each side of the polystyrene foam core along the inner film layer.