Ultra-micro PerforatedSound Absorbing Panel

Structural Composition and Acoustic Working Principle

The surface is evenly perforated with ultra-micro holes of 0.2mm. Sound waves enter the micro-holes and generate friction with the air, dissipating energy and achieving resonant sound absorption.

Sound Energy Conversion: After sound waves enter the micro-holes, they cause friction and resonance within the air layer in the back cavity, converting sound energy into thermal energy that is then dissipated.

Fiber-Free Construction: Eliminates traditional acoustic cotton and relies solely on an all-metal structure combined with an air layer for sound absorption, preventing performance degradation caused by material aging.

Structure Composition & Acoustic Principles

Face Panel: Lightweight aluminum panel (color customizable).
Core Material: Inorganic fireproof core material, calcium sulfate / aluminum hydroxide core.
Specifications / Dimensions: Width 1220mm, length customizable upon request.
Environmental Performance: National Standard E1 Grade.
Key Features: Broadband sound absorption, high stain resistance, and high electromagnetic shielding performance.

How it functions

Air particle viscosity

Sound wave disruption

Microperforated Resonance Sound Absorption

Extremely Small Aperture: The panel features apertures of approximately 0.1mm (compared to 0.5–3mm for traditional micro-perforated panels), arranged densely to form a “parallel micro-tube” structure.

Sound Energy Conversion: After sound waves enter the micro-perforations, they generate frictional resonance within the air layer in the back cavity, converting sound energy into thermal energy that is dissipated.

Fiber-Free Construction: Traditional acoustic cotton is eliminated, and sound absorption is achieved solely through the all-metal structure combined with an air layer, preventing performance degradation caused by material aging.

In Comparison With Traditional Sound-absorbing Materials

Performance	Micro-Perforated Panel	Mineral Wool Panel	Fiberglass Panel	Polyester Fiber	Polyurethane Foam
Non-Toxic	Excellent	Excellent	Fair	Excellent	Fair
Durability	Excellent	Fair	Fair	Excellent	Fair
Sound Absorption	Excellent	Excellent	Excellent	Excellent	Excellent
Fire Resistance	Excellent	Fair	Fair	Fair	Poor
Moisture Resistance	Excellent	Poor	Poor	Fair	Poor
Dust Resistance	Excellent	Fair	Poor	Fair	Poor
Thermal Insulation	Excellent	Excellent	Excellent	Excellent	Excellent