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Rock Wool Perforated Acoustic Panel
Rock wool perforated acoustic panels are a type of architectural acoustic material that combines rock wool sound-absorbing material with perforated panel design. They are primarily used for noise control and indoor acoustic optimization. Below is a detailed introduction to this product:
1. Structure and Composition
Core Material: Made of rock wool (basalt fiber), offering excellent sound absorption, thermal insulation, and fire resistance.
Surface Layer: Covered with perforated metal panels (e.g., aluminum, galvanized steel) or other materials (e.g., gypsum board, wood panel). The perforations can be round, square, or custom patterns, arranged in various layouts (e.g., linear, staggered).
Composite Process: The rock wool and surface panel are bonded with adhesive or mechanically fixed. Some products include a non-woven fabric backing to prevent fiber shedding.
2. Core Functions
Sound Absorption & Noise Reduction:
The porous structure of rock wool absorbs mid-to-high-frequency sound waves, while the perforation size and open area ratio (typically 15%~30%) can be adjusted for optimal frequency absorption.
Ideal for reducing reverberation and improving indoor acoustics (e.g., conference rooms, theaters).
Fire Resistance: Rock wool is a Class A non-combustible material, complying with building fire safety standards.
Additional Features: Thermal insulation, moisture resistance (some products are hydrophobically treated), lightweight (density ~40-200 kg/m³).
3. Applications
Architectural Acoustics: Cinemas, recording studios, gymnasiums, open-plan offices.
Industrial Noise Control: Equipment rooms, factories, HVAC ducts.
Public Facilities: Subway stations, airports, hospitals (some with antibacterial treatment).
Decorative Use: Customizable colors and patterns for aesthetic appeal.
4. Key Selection Parameters
Open Area Ratio: Affects sound absorption coefficient; higher ratios are better for high-frequency noise.
Thickness: Typically 50–100 mm; thicker panels improve low-frequency absorption.
Noise Reduction Coefficient (NRC): Usually 0.6–1.0; NRC ≥ 0.75 indicates high efficiency.
Fire Rating: Class A (GB8624-2012), Euroclass A1.
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