Study of Acoustic Prototypes Based on Plastic Cap Waste

This paper presents the initial prototypes of solutions designed using plastic caps, seeking acoustic applications for both airborne sound insulation and the acoustic conditioning of rooms. Plastic caps are a waste product from the packaging sector and they constitute a major waste problem, given th...

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Bibliographic Details
Published in:Buildings (Basel) 2024-06, Vol.14 (6), p.1652
Main Authors: Del Rey, Romina, Crespo Amorós, José Enrique, Escales Tur, Joan, Alba, Jesús
Format: Article
Language:English
Subjects:
Absorption
Absorptivity
acoustic conditioning
Acoustic insulation
Acoustic properties
Acoustics
Architectural acoustics
Backup software
building acoustics
Circular economy
Conditioning
Configurations
Design
Emission standards
Insulation
Jute
Landfill
Landfills
Packaging
plastic
Plastics
Product development
Prototypes
Recycling
Recycling (Waste, etc.)
Reverberation chambers
Sound
sound insulation
Sound transmission
Sustainability
Sustainable materials
Textile industry wastes
Waste disposal sites
Waste management
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Summary:This paper presents the initial prototypes of solutions designed using plastic caps, seeking acoustic applications for both airborne sound insulation and the acoustic conditioning of rooms. Plastic caps are a waste product from the packaging sector and they constitute a major waste problem, given that, if they are not attached to the packaging, they get lost during the recycling cycle and end up in landfill. Finding an application for this waste that can provide acoustic improvements is a sustainable alternative. This paper shows the results of airborne sound insulation measurements obtained in a scaled transmission chamber and sound absorption measurements obtained in a scaled reverberation chamber for different combinations of single and double plastic caps and combinations with thin sheets of sustainable materials, such as jute weaving, textile waste, hemp felt and cork board. Tests have shown that obtaining sound reduction index values of up to 20 dB is possible with plastic cap configurations, or even up to 30 dB is possible at some frequencies with combinations of caps and certain eco-materials. With regard to the sound absorption coefficient tests, close to unity absorption values have been achieved with the appropriate configuration at frequencies that can also be selected. The results indicate that these panels can be eco-solutions for airborne sound insulation as lightweight elements, or they can be used for the conditioning of rooms, tailoring the sound absorption maximums to the desired frequencies.
ISSN:2075-5309
2075-5309
DOI:10.3390/buildings14061652