Flooring Panel Compressible Layer Impact Sound Attenuation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Hard surface floor coverings with high rigidity and hardness have poor acoustic performance, particularly in reducing transmitted and reflected impact sound, limiting their suitability for sound management in buildings.
Innovation Solution
A flooring panel design featuring a decorative top layer with flexibility of 1800 MPa or less and a compressible layer with Shore A hardness of 75 or less, positioned between the core layer and the decorative top layer, which absorbs and transforms impact kinetic energy to reduce sound amplitude and pitch.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If hard surface floor coverings with high rigidity and hardness are used, then strength and scratch resistance are improved, but acoustic performance deteriorates
Solution Approach 1:
The flooring panel uses a composite structure combining a hard core layer (for strength and rigidity) with a soft compressible layer (for acoustic performance). This multi-material approach allows simultaneous achievement of mechanical strength and sound attenuation properties that cannot be obtained with single materials.
Solution Approach 2:
Different layers of the flooring panel have different local properties: the core layer provides hardness and structural integrity, while the compressible layer provides softness and acoustic damping. Each layer is optimized for its specific function, creating overall performance that balances strength and acoustic properties.
2Object-affected harmful factors
If the thickness of the buffer layer is increased to improve sound attenuation, then acoustic performance is improved, but device complexity and construction thickness increase
Solution Approach 1:
The patent optimizes the thickness and density parameters of the compressible layer to achieve effective sound attenuation within a limited thickness range (0.1-5 mm). By carefully selecting material parameters such as density (20-200 kg/m³) and thickness, the patent achieves acoustic performance without excessive construction thickness.
3Reliability
If the surface hardness is increased to maintain scratch resistance, then durability is improved, but reflected walking sound increases
Solution Approach 1:
The flooring panel has different local surface properties: the core layer maintains high hardness for scratch resistance, while the compressible layer provides a softer surface that reduces impact sound and reflected walking sound. This local differentiation allows simultaneous achievement of durability and acoustic comfort.
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 combination achieves a significant sound attenuation of up to 26 dB, improving sound management without the need for thick constructions, while maintaining the benefits of hard surface floor coverings such as scratch resistance and ease of cleaning.
Implementation Method 1
absorbs and transforms impact kinetic energy to reduce sound amplitude and pitch
Implementation Method 2
which absorbs and transforms impact kinetic energy to reduce sound amplitude and pitch
Implementation Method 3
at least one compressible layer situated between the core layer and the decorative top layer
Data Source
AI summary
The invention relates to a flooring panel suitable for constructing a floor covering, which panel comprises a core layer and a decorative top layer and a layer situated between the core layer and the decorative top layer which enables improves sound performance.