Vertically Lapped Fibrous Flooring Acoustic Damping
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Solution Overview
Problem
Existing acoustic flooring systems are either labor-intensive and costly or inexpensive but fail to provide the desired sound damping, often relying on liquid adhesives, foams, and solvents, which complicate installation and increase thickness.
Innovation Solution
A flooring assembly comprising a vertically lapped fibrous material layer, pressure-sensitive adhesive (PSA) layers with a flexible substrate and mesh, and a moisture impermeable membrane layer, which can be installed without liquid adhesives or solvents, providing acoustic damping while maintaining ease of installation and low cost.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If liquid adhesives and solvents are used to bond flooring layers, then bonding strength is improved, but installation complexity and time increase
Solution Approach 1:
The patent removes liquid adhesives and solvents from the flooring assembly, replacing them with a self-adhering foam underlayment that has adhesive properties integrated directly into the foam structure. This extraction eliminates the need for separate adhesive application steps while maintaining bonding functionality.
Solution Approach 2:
The patent combines the adhesive function with the foam underlayment by integrating pressure-sensitive adhesive or hot-melt adhesive directly into the foam structure. This merging consolidates multiple functions (cushioning, moisture barrier, and bonding) into a single integrated component, simplifying installation.
2Object-affected harmful factors
If multiple adhesive layers and matting are used to achieve desired sound damping, then acoustic performance is improved, but installation time and cost increase
Solution Approach 1:
The patent merges the acoustic damping function with the foam underlayment by incorporating viscoelastic foam material that provides sound damping properties. This integration combines moisture barrier, cushioning, and acoustic damping functions into a single layer, eliminating the need for separate matting and adhesive layers.
Solution Approach 2:
The foam underlayment serves multiple functions simultaneously: it acts as a moisture barrier, provides cushioning, delivers sound damping, and offers adhesive bonding capability. This multi-functionality reduces the number of components and installation steps required.
3Strength
If foam and liquid adhesives are used in flooring assembly, then bonding and cushioning are improved, but installation simplicity is worsened due to use of liquid materials
Solution Approach 1:
The patent extracts liquid adhesives from the system and replaces them with self-adhering foam that has integrated adhesive properties. This eliminates the need for separate adhesive application, drying, and cleanup operations, significantly simplifying installation.
Solution Approach 2:
The foam underlayment is designed to be self-adhering through integrated pressure-sensitive or hot-melt adhesive, allowing it to bond to the subfloor without requiring external adhesive application. This self-service capability eliminates manual adhesive application steps and simplifies the installation process.
4Object-affected harmful factors
If conventional acoustic flooring assemblies are used, then sound damping is achieved, but assembly thickness increases
Solution Approach 1:
The patent merges the acoustic damping function into the foam underlayment layer itself, which has inherent viscoelastic properties for sound absorption. This integration eliminates the need for additional thick matting layers, maintaining a compact overall assembly thickness while achieving effective sound damping.
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 solution simplifies installation, eliminates the need for foams and liquid adhesives, and effectively dampens sound, achieving the desired acoustic performance without added thickness or cost.
Implementation Method 1
acoustic flooring assemblies comprising a vertically lapped fibrous material layer
Implementation Method 2
at least one PSA layer including a flexible substrate, a mesh and an adhesive located along the flexible substrate
Data Source
AI summary
A flooring assembly (10) comprising at least one vertically lapped fibrous material layer (14), at least one pressure sensitive adhesive layer (12a) including a flexible substrate (12b), a mesh (12c) and an adhesive (12d) located along the flexible substrate, and at least one moisture impermeable membrane layer (16).