Slabs with a pyramidal surface configuration. The pyramids are made from a special quality of flexible polyester-based polyurethane foam, with a homogeneous mass and an optimal percentage of closed cells for high sound absorption performance. The polyhedral cells have 20-30% open walls to allow the air carrying the sound wave to penetrate. At the same time, they are 70-80% closed with elastic membranes to absorb the energy of the air molecules resulting in sound absorption. Their distinctive feature is the "pyramid" surface configuration, which provides a multiple effective sound-absorbing surface compared to flat products of the same average thickness.

Dimensions:

• Form: slabs
• Dimensions: 500x1000mm ± 3mm
• Pyramid type/dimensions: HF-PY/40-50: standard pyramid, base 50x50mm and height 25mm.
• Average thickness 27.5mm, maximum thickness 40mm

Uses-Applications:

• Sound-absorbing cladding in recording & broadcasting studios
• Home cinema
• Laboratories
• Entertainment venues
• Construction of non-outdoor sound barriers

Technical Characteristics:

• Density (ISO 845): 30 ± 3 kg/m3
• Fire behavior: UL94: HF1, MVSS 302: SE
• Thermal conductivity coefficient: 0.035 W/mK (10°C)
• Application temperature limits: -50°C, +130°C (short-term use), -50°C, +100°C (continuous use)
• Color: anthracite (material color)
• Sound absorption coefficient (as): [Reverberation chamber method EN ISO 354]