Gypsum Panel Acoustic Ceiling Monolithic NRC
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Solution Overview
Problem
Existing acoustical ceiling solutions, such as perforated gypsum panels, do not achieve a high enough noise reduction coefficient (NRC) to qualify as monolithic and aesthetically pleasing, as they retain visible divisions and do not provide sufficient sound absorption.
Innovation Solution
Modifying ordinary gypsum panels by creating a perforated core with restricted perforations and covering them with non-woven porous scrim fabric on the front and optional acoustical fabric on the back, allowing for installation as a monolithic ceiling or wall with enhanced sound absorption properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If perforated gypsum panels are used to achieve sound absorption, then the noise reduction coefficient improves, but the monolithic appearance deteriorates due to visible perforations and grid divisions
Solution Approach 1:
The patent applies porous non-woven fabric materials to the surface of the gypsum panel. This fabric layer provides the necessary porosity for sound absorption while maintaining a smooth, continuous visual appearance that eliminates the visible grid divisions and perforations, thus achieving both high NRC and monolithic appearance simultaneously
Solution Approach 2:
The patent creates a composite structure by combining gypsum board with non-woven fabric materials. The gypsum core provides structural integrity while the porous fabric layers (applied to one or both surfaces) provide acoustic absorption properties, achieving synergistic performance that neither material could achieve alone
2Shape
If ordinary gypsum panels are used to maintain monolithic appearance, then the seamless look is achieved, but the sound absorption capacity deteriorates due to insufficient NRC
Solution Approach 1:
The patent transforms ordinary gypsum panels into acoustical panels by applying porous non-woven fabric materials to the surface. This fabric layer maintains the smooth monolithic appearance while introducing the porosity necessary for sound absorption, achieving NRC values of 0.70 or higher
Solution Approach 2:
The patent changes the surface properties of the gypsum panel by applying porous fabric materials, thereby altering the acoustic parameters (NRC) without changing the visual parameters. This allows the same panel to achieve both monolithic appearance and high sound absorption capacity
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 modified gypsum panels achieve an NRC of 0.70 or more, providing effective sound absorption while maintaining a seamless, monolithic appearance, comparable to better-grade acoustical ceiling tiles.
Implementation Method 1
a painted non-woven porous scrim fabric or veil at the front face and, optionally, a non-woven porous acoustical fabric at the back side
Implementation Method 2
Such panels can achieve an NRC of 0.70 or more
Data Source
AI summary
An acoustical panel for forming a monolithic ceiling or wall, the panel extending across a rectangular area, and having a core made primarily of gypsum, the core being essentially coextensive with the panel area such that it has two opposed sides, each of an area substantially equal to the area of the panel, the core having a multitude of perforations extending generally between its sides, the perforations being distributed substantially uniformly across the full area of the core and being open at both sides of the core, the face side of the core being covered by a porous layer, the perforations being optionally restricted at a rear side of the core, the porous layer at the face side of the core being suitable for adherence of drywall joint compound and a water-based non-blocking paint.