SPC Flooring Panel With Core Cavities for Acoustic Absorption
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Solution Overview
Problem
Rigid Stone Plastic Composite (SPC) flooring panels have unsatisfactory acoustic performance compared to flexible Luxury Vinyl Tiles (LVT), while increasing mineral content improves rigidity but worsens sound absorption, necessitating a solution that balances rigidity and acoustics.
Innovation Solution
A panel with a composite core layer comprising at least 20% mineral material and featuring cavities on the bottom surface extending towards the top surface, enhancing sound absorption without compromising rigidity, potentially eliminating the need for additional sound-dampening layers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If mineral content is increased in the core layer, then rigidity and dimensional stability are improved, but acoustic performance deteriorates
Solution Approach 1:
The patent introduces cavities within the core layer structure, transforming the solid mineral-thermoplastic composite into a porous configuration. These cavities create air pockets that absorb sound waves, improving acoustic performance while preserving the rigidity provided by the mineral-thermoplastic matrix. The porous structure allows the material to maintain structural integrity while adding sound absorption capabilities.
Solution Approach 2:
The patent employs a composite material system consisting of mineral material (such as ground natural stone) combined with thermoplastic material. This composite provides the necessary rigidity and dimensional stability, while the integrated cavity structure within this composite enables sound absorption. The composite nature allows simultaneous achievement of structural and acoustic requirements.
2Ease of operation
If the panel is made substantially rigid with high mineral content, then handling and installation become easier, but sound absorption capability is reduced
Solution Approach 1:
The cavity structure creates a porous configuration within the rigid panel body. These cavities act as sound traps, absorbing acoustic energy while the surrounding mineral-thermoplastic composite maintains the panel's rigidity for easy handling and installation. The porous structure does not compromise the overall structural integrity.
Solution Approach 2:
The panel's core layer is segmented into multiple regions by the cavities, creating a distributed structure throughout the panel body. This segmentation allows sound waves to be absorbed at multiple locations, improving overall sound absorption while the segmented structure still maintains sufficient rigidity for practical handling and installation operations.
3Device complexity
If a solid core layer is used to ensure rigidity, then the panel structure is simplified, but additional sound-dampening layers are required
Solution Approach 1:
The patent merges the structural core layer function with the sound absorption function into a single integrated component. The cavities are formed directly within the core layer during manufacturing, eliminating the need for separate sound-dampening layers. This merging reduces overall panel complexity while achieving both structural and acoustic requirements.
Solution Approach 2:
The core layer is designed to perform multiple functions simultaneously: providing structural rigidity through the mineral-thermoplastic composite and providing sound absorption through the integrated cavity structure. This multi-functionality eliminates the need for additional dedicated sound-dampening layers, simplifying the overall panel construction.
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 panel achieves improved acoustic performance with increased rigidity, allowing for better sound dampening and reduced vibration, making it suitable for use as both a floor, wall, and ceiling panel without requiring additional sound-dampening layers.
Implementation Method 1
The presence of at least one cavity in the bottom surface core layer which extends towards to top surface of the core layer causes at least one local reduction of material in the core layer. This may affect the absorption, transmission, reflection, refraction and/or the diffraction of sounds waves interacting with the panel. It is experimentally found that the combination of a composite core according to the present invention being provided with at least one cavity provides a positive effect on the acoustic performance of the panel, wherein a sound dampening effect is obtained.
Data Source
AI summary
The invention relates to a panel for constructing a floor or wall covering. The panel comprises a substantially planar top surface, at least one core layer composed of a composite material which core layer is provided with at least one cavity, and a bottom surface. The panel further comprises at least one pair of opposite edges, said pair of opposite edges preferably comprising complementary coupling parts configured for mutual coupling of adjacent panels.