Acoustical Element Manufacturing With Mineral Wool Composites
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Solution Overview
Problem
Existing acoustical elements, such as ceiling tiles, are difficult to combine in a way that achieves the desired acoustic properties for each room, and their manufacturing often requires significant resources.
Innovation Solution
A method involving the use of mineral wool and bicomponent fibres with a thermoplastic outer layer, mixed and shaped with controlled ratios and compression to create acoustical elements with varying properties, using recycled materials and forming techniques like vacuum forming and calendaring to achieve tailored acoustic performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If different types of acoustical elements are used to achieve desired acoustic properties, then acoustic performance is improved, but complexity of selection and combination increases
Solution Approach 1:
The patent creates a universal acoustical element that can be manufactured in different acoustic configurations by controlling the mixing ratio and compression ratio of fibre components. A single element design can provide different NRC values (0.65, 0.75, 0.85, 0.95) and different thicknesses (50mm, 75mm, 100mm) without requiring multiple distinct element types, thereby simplifying selection while maintaining acoustic performance.
Solution Approach 2:
The patent varies physical parameters (mixing ratio of fibre components, compression ratio, thickness) to achieve different acoustic properties within a single element type. By changing these manufacturing parameters, the same basic element design can be produced with different sound absorption characteristics, eliminating the need to select from multiple complex element types.
2Ease of manufacture
If traditional acoustical elements are manufactured with standard materials, then manufacturing process is simple, but environmental impact increases
Solution Approach 1:
The patent incorporates recycled ceiling tiles (containing mineral wool and fibres) as a core component in the new acoustical element. By recovering and reusing materials from discarded ceiling tiles, the manufacturing process reduces environmental impact while maintaining ease of manufacture through a streamlined single-step process that integrates the recycled material with new bicomponent fibres.
Solution Approach 2:
The patent creates a composite material system combining recycled mineral wool fibres with new bicomponent fibres having thermoplastic outer layers. This composite approach allows the use of sustainable recycled materials while maintaining manufacturing simplicity through a unified heating and compression process that bonds both material types together.
3Reliability
If acoustical elements are customized for specific acoustic properties, then acoustic performance is improved, but manufacturing complexity increases
Solution Approach 1:
The patent achieves acoustic customization by varying manufacturing parameters (mixing ratio of fibre components, compression ratio, element thickness) rather than creating different element designs. This allows precise control of NRC values and thickness while using a single, relatively simple manufacturing process, thereby achieving acoustic performance without proportionally increasing manufacturing complexity.
Solution Approach 2:
The patent creates a universal manufacturing process that can produce multiple acoustic configurations from a single element design. The same basic manufacturing setup can produce elements with different NRC values and thicknesses by adjusting mixing and compression ratios, eliminating the need for complex specialized manufacturing lines for each acoustic configuration.
4Adaptability or versatility
If multiple fibre components are mixed and compressed, then acoustic properties can be tailored, but manufacturing process complexity increases
Solution Approach 1:
The patent merges the mixing and compression operations into a single integrated manufacturing step. The fibre components are mixed and compressed simultaneously in one process, rather than requiring separate mixing, shaping, and compression stages. This reduces manufacturing process complexity while maintaining the ability to tailor acoustic properties through controlled mixing ratios and compression levels.
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
Enables the production of acoustical elements with customizable acoustic properties, reducing environmental impact by utilizing recycled materials and allowing for tailored sound absorption and reflection characteristics in a suspended ceiling system.
Implementation Method 1
heating the single layered tile shaped elements in the compressed state for melting the thermoplastic outer layer of the bicomponent fibres
Implementation Method 2
shaping the mixture into tile single layered shaped elements whereby the mixture is compressed with a compression ratio to a compressed state
Data Source
AI summary
A method for manufacturing acoustical elements, includes providing a first fibre component in a form of mineral wool and a second fibre component in a form of bicomponent fibres having a core with a thermoplastic outer layer, mixing the first fibre component and the second fibre component, for provision of a mixture, shaping the mixture into single layered tile shaped elements whereby the mixture is compressed with a compression ratio to a compressed state, and fixating the single layered tile shaped elements in the compressed state for obtaining the acoustical elements.