Floor Panel Seam Sealing With Moisture-Expandable Core Layer
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Solution Overview
Problem
Existing flooring panels suffer from moisture penetration through panel joints, leading to bacterial and fungal growth due to dust and liquid ingress, which complicates installation and maintenance.
Innovation Solution
A panel design with a core comprising multiple layers, including an expandable material layer that swells upon moisture contact to create a seal between panels, enhancing waterproofing at the seam.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If panels are interlocked with tongue and groove coupling, then installation is easy and floor surface can move for expansion, but seams are formed allowing moisture penetration and bacterial growth
Solution Approach 1:
The patent applies a flexible waterproof foil or coating on the upper edge portions of panels. This thin film layer seals the seam between panels while maintaining the tongue-and-groove interlocking mechanism, preventing moisture penetration without compromising installation ease.
Solution Approach 2:
The patent combines multiple materials: the panel substrate (wood, wood-derived, plastic, or mineral-based), the coupling mechanism (tongue and groove), and the waterproofing layer (foil or coating). This composite structure integrates structural integrity with moisture protection, sealing seams while preserving the expansion capability of the floating floor.
2Object-affected harmful factors
If panels are glued or nailed to underlying floor, then moisture penetration is reduced, but installation becomes complicated and changes require breaking out panels
Solution Approach 1:
The flexible waterproof foil or coating provides moisture protection without requiring adhesive or mechanical fastening to the substrate. This allows the panel to remain part of a floating floor system that can be easily installed and reconfigured while still preventing moisture ingress through the seams.
3Object-affected harmful factors
If expandable material layer is exposed at panel interface, then seal between panels improves upon moisture contact, but panel structure becomes more complex
Solution Approach 1:
The patent incorporates an expandable material layer within the panel structure that changes its physical parameters (expands) upon contact with moisture. This dynamic response automatically seals the seam between panels without requiring complex mechanical sealing mechanisms, maintaining relative structural simplicity while effectively preventing moisture ingress.
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 expandable layer effectively seals the panel joints, preventing moisture ingress and reducing the risk of bacterial and fungal growth, while maintaining easy installation and preserving the panel's design aesthetics.
Implementation Method 1
at least one material layer of the core, preferably at least a part of the middle layer (B) of the core, comprises and/or is formed by at least one expandable material layer which comprises at least one material configured to expand or swell upon contact with moisture
Data Source
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Figure 3
AI summary
The present invention relates to a panel, such as a floor panel, a wall panel or a ceiling panel, in particular a decorative floor panel. The invention also relates to a covering, in particular a floor covering, comprising multiple interconnected panels according to the invention. The invention also relates to a method of manufacturing a panel according to the invention.