Acoustic Ceiling Panel with Attenuation Coating for Sound Blocking
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Solution Overview
Problem
Existing acoustic building panels fail to achieve enhanced noise reduction and sound attenuation, often limiting maximum sound blocking performance.
Innovation Solution
The development of an acoustic ceiling panel with a first air-permeable body and an attenuation coating applied to its surfaces, which includes a multilayered structure comprising a noise-reducing air-permeable material and a sound attenuation material, with the attenuation coating positioned between these layers to enhance sound absorption and attenuation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If previous acoustic building panels are used to improve noise blocking between rooms, then speech privacy is improved, but maximum sound attenuation is limited and cannot be enhanced further
Solution Approach 1:
The patent applies composite materials by combining an air-permeable body (such as acoustic tile or porous material) with a sound attenuation coating (such as mass-loaded vinyl or other dense barrier materials) to create a hybrid structure that achieves both high NRC values for noise blocking and enhanced CAC values for sound attenuation, overcoming the limitations of single-material panels
2Object-affected harmful factors
If an attenuation coating is applied to seal the surfaces of the air-permeable body, then sound attenuation is improved, but airflow through the material is reduced
Solution Approach 1:
The patent applies local quality by selectively coating only certain surfaces of the air-permeable body - specifically coating the rear surface and edge surfaces with attenuation material while leaving the front surface uncoated or lightly coated. This localized approach provides sound attenuation benefits from the coated surfaces while preserving airflow characteristics through the uncoated front surface
3Object-affected harmful factors
If a multilayered structure with attenuation coating is used to enhance noise reduction, then NRC and CAC values are improved, but device complexity increases
Solution Approach 1:
The patent merges multiple functions into a single integrated panel structure where the air-permeable body and attenuation coating are combined into one composite acoustic panel. This unified structure simultaneously provides noise reduction, sound attenuation, and airflow management in a single component rather than requiring separate layers or assemblies
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 effectively increases the Noise Reduction Coefficient (NRC) and Ceiling Attenuation Class (CAC) values, providing improved noise reduction and sound attenuation performance while maintaining airflow and aesthetic appeal.
Implementation Method 1
an attenuation coating applied to the second major surface of the body and the side surface of the body, whereby the attenuation coating seals at least a portion of the second major surface and the side surface of the body
Implementation Method 2
a first air-permeable body comprising a first major surface opposite a second major surface and a side surface extending between the first and second major surfaces, the first body having an NRC value of at least 0.5
Data Source
AI summary
Described herein is an acoustic ceiling panel comprising: a first air-permeable body comprising a first major surface opposite a second major surface and a side surface extending between the first and second major surfaces, the first body having an NRC value of at least 0.5 as measured between the first and second major surfaces of the first body; and an attenuation coating applied to the second major surface of the body and the side surface of the body, whereby the attenuation coating seals at least a portion of the second major surface and the side surface of the body.