Acoustic Ceiling Panel Sealing Structure for Higher Sound Attenuation
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Solution Overview
Problem
Existing acoustic building panels fail to achieve enhanced sound attenuation and often lack the desired noise-reducing performance, limiting their effectiveness in blocking noise between rooms and dampening sound within a single space.
Innovation Solution
The acoustic ceiling panel comprises multiple layers, including a first layer with a porous body for sound absorption and a second layer for sound attenuation, combined with a sealing layer that forms a gasket seal with the ceiling grid, enhancing soundproofing capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If previous acoustic building panels are used, then basic ceiling coverage is provided, but noise reducing performance is insufficient and maximum sound attenuation is limited
Solution Approach 1:
The panel is divided into multiple functional layers including a rigid core layer, flexible layer, and sealing layer, each contributing different acoustic properties. This segmentation allows optimization of sound attenuation at different frequencies and mechanisms, achieving superior overall noise reduction compared to single-layer panels.
Solution Approach 2:
The panel combines dissimilar materials with complementary acoustic properties: rigid materials (gypsum, cement board) for mass and sound blocking, flexible materials (rubber, foam) for vibration damping and decoupling. This composite structure creates synergistic noise reduction effects that exceed the sum of individual material performances.
2Ease of manufacture
If traditional single-layer panels are used, then installation is simple, but soundproofing capabilities are limited
Solution Approach 1:
The sealing layer is pre-formed with integrated gasket features that automatically engage with ceiling grid channels during installation. This preliminary preparation of sealing surfaces and structures ensures effective soundproofing without requiring additional sealing steps or complex assembly procedures.
Solution Approach 2:
The sealing function is merged into the panel structure itself through an integrated sealing layer that combines acoustic sealing with mechanical attachment functions. This eliminates the need for separate sealing components while maintaining ease of installation.
3Device complexity
If panels without extended sealing layers are used, then manufacturing is simpler, but gasket seal formation with ceiling grid is inadequate
Solution Approach 1:
The sealing layer extends beyond the panel edges in the lateral dimension, creating an overlapping configuration that forms effective gasket seals with adjacent panels and ceiling grid channels. This dimensional extension transforms a potentially complex sealing requirement into a simple geometric solution.
Solution Approach 2:
The sealing layer uses flexible material that can deform to conform to ceiling grid channel profiles and accommodate installation variations. This flexibility ensures reliable air barrier seals without requiring precise manufacturing tolerances or complex sealing mechanisms.
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 achieves improved sound insulation with a Noise Reduction Coefficient (NRC) of at least 0.5 and a Ceiling Attenuation Class (CAC) of 35 dB, effectively reducing noise transmission and enhancing speech privacy.
Implementation Method 1
a first layer comprising a porous body
Data Source
AI summary
An acoustical ceiling panel including a first layer having a first major surface opposite a second major surface and a side surface extending therebetween, a second layer having a first major surface opposite a second major surface and a side surface extending therebetween, and a sealing layer having a first major surface opposite a second major surface and a side surface extending therebetween. The sealing layer may be positioned between the first major surface of the first layer and the second major surface of the second layer. The side surface of the sealing layer may extend beyond the side surface of the first layer and the side surface of the second layer.