Microfiber Sound Absorbing Felt

Filling density ranges from 16 to 48 kg/m³, with 24 kg/m³ being a common grade. Thickness can be customized from 1 to 200 mm.

A 25 mm product with a density of 32 kg/m³ provides an NRC of about 0.65–0.75 when installed directly against a surface.

A 50 mm product at 32–48 kg/m³ reaches about 0.85–0.90. A 100 mm product at the same density provides an NRC of at least 0.90.

A standard-density 50 mm, 24 kg/m³ product reaches about 0.79–0.80. By increasing thickness and density, the NRC can reach 0.90–0.94.

These options help purchasing teams match the material to wall depth, ceiling space, or equipment-cavity dimensions without automatically choosing the highest available density.

The material performs particularly well at medium and high frequencies, while absorption at 125 Hz is relatively limited.

Leaving a 30–100 mm air space behind the felt can extend the sound path and improve low-frequency performance. For example, a 50 mm, 32 kg/m³ grade installed with a 50 mm rear cavity can reach an NRC of about 0.90–0.95.

Microfiber Sound Absorbing Felt has a compression recovery of at least 85%. Rolls can be vacuum compressed for transportation and storage. After unpacking, the material can naturally recover its thickness.

This makes it practical for continuous installation and large-area filling in recording studios, audiovisual rooms, piano rooms, meeting rooms, equipment rooms, ventilation equipment, wall framing cavities, and suspended ceilings.

Jiangsu Haokai can adjust thickness, density, width, and pre-cut dimensions according to the installation cavity, required NRC, and project quantity.

The factory operates about 30,000 m² of production space and has material production, precision die-cutting, final-inspection, and warehouse-management capabilities. The stated monthly production capacity is 600 tons.

Standard and custom products normally take 7–15 days to produce. Repeat-order lead times may be shortened after the specifications have been confirmed. Photos or videos can be provided during production.

Packaging can be adjusted according to the vacuum-compression condition, transportation distance, and customer storage requirements. Products receive 100% inspection before packing, and third-party inspection is accepted.