Acoustic Ceiling Panel Perimeter Adhesive Segmentation

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Solution Overview

Problem

Existing laminate acoustic ceiling panels fail to effectively address the interface between layers, which impacts noise blocking and sound dampening characteristics, leading to suboptimal acoustical performance.

Innovation Solution

A multilayer acoustic ceiling panel design where the second major surface of the first layer is coupled to the first major surface of the second layer without adhesive in the central regions, allowing for improved sound attenuation and absorption by applying adhesive only to the perimeter regions, enhancing the Ceiling Attenuation Class (CAC) value while maintaining a high Noise Reduction Coefficient (NRC) value.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If adhesive is applied across the entire interface between layers, then bonding strength is improved, but sound absorption performance deteriorates

Engineering Contradiction:

Improvebonding strengthVSAvoidsound absorption performance

Core Design Contradiction:

StrengthVSObject-affected harmful factors

Solution Approach 1:

The interface between layers is segmented into perimeter region (with adhesive) and central region (without adhesive). This segmentation allows the bonding function to be concentrated at the edges while preserving sound absorption in the central area, resolving the contradiction between bonding strength and sound absorption performance.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Different regions of the interface are given different properties: the perimeter region has adhesive for bonding, while the central region is adhesive-free for sound absorption. This local differentiation allows each region to optimize its specific function without compromising the other.

Inventive Principle:

Principle #3Local quality

2Ease of manufacture

If single layered structure is used, then manufacturing simplicity is improved, but noise blocking performance deteriorates

Engineering Contradiction:

Improvemanufacturing simplicityVSAvoidnoise blocking performance

Core Design Contradiction:

Ease of manufactureVSObject-affected harmful factors

Solution Approach 1:

The patent uses a laminate structure combining multiple layers with different acoustic properties. The first layer provides sound absorption while the second layer provides noise blocking, creating a composite ceiling panel that achieves both functions simultaneously, overcoming the limitations of single-layer structures.

Inventive Principle:

Principle #40Composite materials

3Stability of the object's composition

If layers are bonded across entire interface, then structural integrity is improved, but sound dampening characteristics deteriorates

Engineering Contradiction:

Improvestructural integrityVSAvoidsound dampening characteristics

Core Design Contradiction:

Stability of the object's compositionVSObject-affected harmful factors

Solution Approach 1:

The bonding interface is segmented to provide structural support at the perimeter while maintaining sound dampening in the central region. The perimeter adhesive application creates a stable frame structure without compromising the acoustic performance of the central area.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Adhesive is applied partially only to the perimeter region rather than the entire interface. This partial action provides sufficient structural integrity for the ceiling panel while avoiding the excessive bonding that would harm sound dampening characteristics in the central region.

Inventive Principle:

Principle #16Partial or excessive action

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 achieves a marked improvement in soundproofing between adjacent rooms without substantial detrimental changes in sound absorption within a room, maintaining an NRC value of 0.7 or greater and a CAC value of 35 or greater, thus providing effective noise reduction and sound absorption.

Implementation Method 1

the second major surface of the first layer is coupled to the first major surface of the second layer and each of the central region of the second major surface of the first layer and the central region of the first major surface of the second layer being free of adhesive

Methodology Applied

Scientific EffectAdhesive bonding: Adhesive

Implementation Method 2

the first and second layers are coupled to each other to form a multilayer panel... achieving a marked improvement in soundproofing between adjacent rooms

Methodology Applied

Scientific EffectSound attenuation: Acoustic Absorption

Implementation Method 3

allowing for improved sound attenuation and absorption by applying adhesive only to the perimeter regions, enhancing the Ceiling Attenuation Class (CAC) value while maintaining a high Noise Reduction Coefficient (NRC) value

Methodology Applied

Scientific EffectSound absorption: Acoustic Absorption

Data Source

PatentUS9725898B2Laminate acoustic panel

Publication Date: 2017.08.08 AWI LICENSING LLC

AI summary

Described herein is a laminate acoustic panel comprising a first layer and a second layer, as well as a ceiling system that includes the laminate acoustic panel.