ARPRO Porous

This rigid, shape-mouldable acoustic grade absorbs sound across a wide frequency range while also offering food contact approval and energy absorption.

Engineered specifically for acoustic applications, it reduces noise, vibration, and harshness (NVH) across 400 to 10,000 Hz. Unlike traditional materials, it is rigid, self-supporting, and shape-moldable, eliminating the need for extra installation structures.

Available in grey, bulk densities of 25 g/l and 36 g/l, and a moulded density range of 30 to 55 g/l. Particle weight is 1.5 mg with bead sizes from 2.0 to 6.0 mm. The two grades, ARPRO 4025 Porous and ARPRO 4036 Porous, allow density selection for optimised acoustic performance with energy- and cost-efficient processing.

With its closed-cell structure and hollow cylinder-shaped particle design, it absorbs, blocks, and dampens sound through internal air pockets. Tests show it reduces noise levels up to ten times more effectively than alternative materials, without adding weight — making it ideal for automotive interiors and other sound-sensitive applications. Like all ARPRO materials, it also provides excellent impact energy absorption.