Polyester Fiber Acoustic Panel Fire Resistance
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Solution Overview
Problem
Building panels, particularly ceiling panels, face a challenge in balancing flame and smoke resistance with aesthetic and structural properties, often compromising on desired properties to meet safety standards.
Innovation Solution
The development of an acoustic building panel comprising a fibrous material with at least 70% polyester fiber by weight, featuring a specific bulk density range of 76.9 kg/m3 to 96.1 kg/m3, which is used in ceiling systems and manufactured through a process involving blending with pressurized air and compression to achieve improved fire resistance, sound absorption, and structural integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If building panels use traditional materials to meet flame and smoke resistance standards, then safety requirements are satisfied, but aesthetic and structural properties are compromised
Solution Approach 1:
The patent employs composite materials by combining polyester fibers (at least 70 wt.%) with other fibrous materials to create a building panel that simultaneously achieves flame and smoke resistance while maintaining structural integrity. This composite approach allows the panel to meet safety standards without sacrificing aesthetic or structural properties, directly resolving the technical contradiction between reliability and strength.
2Object-affected harmful factors
If building panels meet strict safety standards for flame and smoke resistance, then fire safety is improved, but desired aesthetic and structural properties are compromised
Solution Approach 1:
The patent changes the material composition parameters by specifying that polyester fibers constitute at least 70 wt.% of the total fibrous material, with the bulk density controlled within a specific range (76.9-96.1 kg/m³). This parameter optimization enables the panel to achieve flame and smoke resistance while maintaining aesthetic properties through proper density control and material selection.
3Strength
If building panels use higher density materials to improve structural integrity, then strength is improved, but fire resistance and acoustical properties deteriorate
Solution Approach 1:
The patent optimizes the bulk density parameter within a specific range (76.9-96.1 kg/m³) to achieve the desired balance between structural integrity and fire resistance. This controlled density range ensures the panel maintains sufficient strength while preserving the acoustical properties and fire resistance characteristics that would be compromised by higher density materials.
4Stability of the object's composition
If building panels use lower density materials to improve acoustical properties, then sound absorption is improved, but structural integrity and fire resistance deteriorate
Solution Approach 1:
The patent establishes a minimum bulk density threshold (76.9 kg/m³) to ensure structural integrity and fire resistance are maintained while still allowing sufficient porosity for acoustical performance. This lower bound parameter prevents the panel from becoming too dense, thereby preserving sound absorption capabilities while ensuring adequate structural strength and fire resistance.
Data Source
AI summary
Described herein is an acoustic building panel comprising: a body comprising a fibrous material and having a first major surface opposite a second major surface and a side surface extending there-between, the fibrous material comprising polyester fiber in an amount of at least 70 wt. % based on the total weight of the fibrous material; wherein the body has a bulk density as measured between the first major surface, the second major surface, and the side surface, the bulk density ranging from about 4.8 lb./ft3 to about 6.0 lb./ft3.