Anti-noise Floor Panel with Variable Stiffness Layers
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Solution Overview
Problem
Existing soundproofing solutions for floors, such as using sound-absorbing foam under tiles or bitumen-based panels, are time-consuming, unsuitable for renovations, create thickness issues, and pose indoor contamination risks due to bitumen and mineral granule detachment.
Innovation Solution
An anti-noise panel comprising a non-bituminous plastic layer filled with mineral filler, sandwiched between layers of non-woven fabric and/or cork and/or recycled rubber, with varying dynamic stiffness, to absorb and damp different sound frequencies, ensuring quick installation and safe indoor use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a screed of at least 5 cm of mortar and/or cement is used to cover sound-absorbing foam, then noise transmission is reduced, but the time for making the floor increases to at least twenty days for complete solidification
Solution Approach 1:
The invention divides the floor construction into separate functional layers: a pre-manufactured panel containing the sound-absorbing foam core, and a separate finishing layer. This segmentation allows the soundproofing function to be achieved without requiring a thick, time-consuming screed, thus reducing both the time for floor making and maintaining noise transmission reduction.
Solution Approach 2:
The sound-absorbing foam is pre-installed within the panel structure before the final floor surface is applied. This preliminary action ensures that noise transmission reduction is achieved without waiting for a thick screed to solidify, thereby reducing the overall floor making time while maintaining acoustic performance.
2Reliability
If a screed of at least 5 cm of mortar and/or cement is used, then noise transmission is reduced, but the thickness creates an inconvenient step at perimeter edges and requires door cutting or replacing
Solution Approach 1:
The invention segments the soundproofing function into a separate, thin panel that can be installed without adding significant thickness to the floor assembly. This allows the sound transmission reduction to be achieved while maintaining perimeter accessibility and avoiding the need for door modifications.
Solution Approach 2:
The invention changes the thickness parameter of the soundproofing layer from at least 5 cm (screed) to a much thinner panel structure, thereby maintaining noise transmission reduction while eliminating the creation of inconvenient steps at perimeter edges and avoiding door cutting or replacing requirements.
3Reliability
If bitumen-based panels are used for soundproofing, then noise reduction is achieved, but indoor contamination risks arise due to bitumen and mineral granule detachment
Solution Approach 1:
The invention extracts and removes the harmful bitumen and loose mineral granules from the panel composition, replacing them with alternative materials that provide equivalent sound absorption without the contamination risk. This maintains noise reduction performance while eliminating indoor contamination hazards.
Solution Approach 2:
The invention converts the harmful properties of bitumen-based panels (granule detachment and contamination) into a beneficial alternative formulation using bound mineral fillers in a plastic matrix, which provides the same sound absorption function without releasing contaminants into the indoor environment.
4Reliability
If known anti-noise panels with mineral granules are used, then noise reduction is achieved, but the granules detach during movement and handling, soiling the room and transport environments
Solution Approach 1:
The invention extracts the loose mineral granules from the panel structure and replaces them with mineral fillers that are chemically or physically bound within a plastic matrix. This maintains the noise reduction capability while eliminating the detachment and soiling problem during movement and handling.
Solution Approach 2:
The invention uses a composite material structure where mineral fillers are embedded within a plastic matrix, creating a unified panel that provides sound absorption without the mineral components detaching. This composite approach maintains noise reduction performance while preventing granule detachment and associated soiling issues.
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 effectively reduces both aerial and footfall noise, is suitable for renovations, can be installed in under a day, and is safe for indoor use without releasing contaminants, with a reduced thickness and weight for easy transport and installation.
Implementation Method 1
a first layer (2) of non-bituminous plastic material, filled with a mineral filler, adapted to absorb the noise
Implementation Method 2
a second layer (4) and a third layer (5) having different dynamic stiffness, so as to damp, respectively, different sound frequencies
Data Source
Figure 1~2
Figure 3
AI summary
The present invention relates to an anti-noise panel (1) for floors, characterized by comprising a first layer (2) of non-bituminous plastic material, filled with a mineral filler, adapted to absorb the noise, enclosed between a second layer (4) and a third layer (5) having different dynamic stiffness, so as to damp, respectively, different sound frequencies.