PET Acoustic Nonwoven 30 mm (2.0 kg/m²) – High-Density Backing Nonwoven Made from Pure PET, Made in Germany
The vitAcoustic PET nonwoven is a soft, open-pore fiber absorber made from 100 % PET (polyester, with approx. 60 % of the fiber content from recycled PET bottles). Unlike our PET felt panels, the nonwoven is not hot-pressed and therefore not self-supporting – it remains soft and flexible and is used as an insulating and sound-absorbing core behind cladding.
Here, we offer it as a standalone nonwoven panel without a composite layer – intended for backfilling by a carpenter, for example within furring, behind acoustic slats, or in drywall/stud walls. It combines two functions: sound absorption and thermal insulation in one. Panel size 2440x1220x30 mm, thickness 30 mm, areal weight 2.0 kg/m² (approx. 6 kg per panel).
Acoustic Performance (Derived from Reference Measurements According to ISO 354)
As a soft, open-pore absorber, the nonwoven is significantly more effective than a rigid panel of the same thickness even when mounted directly on the wall – with an air cavity behind it or as part of a composite, it achieves peak performance. We specify the weighted sound absorption coefficient αw and the NRC value:
-
Directly on the wall: αw 0.65 / NRC 0.75 – class C
-
Within furring / with a cavity behind it: up to class B
-
Freestanding or suspended with a large gap: up to sound absorption class A
-
As a nonwoven composite with our 9-mm PET felt panel: sound absorption class A (our standard nonwoven composite uses the 40-mm version; the 30-mm panel produces a slightly thinner assembly)
Values derived from reference measurements of comparable 100 % PET nonwovens (tested according to ISO 354), adjusted for our specific thickness and density – no separate test report is available for this configuration. Rated according to DIN EN ISO 11654; conservatively estimated. The exact performance depends on the assembly (air cavity, cladding).
The nonwoven thus helps reduce reverberation time in accordance with DIN 18041 – particularly effectively as cavity fill behind open or perforated cladding.
Maximum Absorption: Nonwoven Composite with the 9-mm Panel
Combined with our 9-mm PET felt panel, the nonwoven forms the vitAcoustic nonwoven composite: the rigid, designed panel forms the visible surface, while the soft nonwoven behind it provides absorption extending into lower frequencies. This composite achieves sound absorption class A when mounted flat directly on the surface – without an air gap or furring. We supply finished composite panels ready to install; the loose nonwoven panel offered here is the alternative for custom assembly by a carpenter.
Applications
Backfilling furring: as an absorber core behind acoustic slats, wood strips, or perforated/open cladding – fills the cavity and makes the assembly acoustically effective.
Drywall and stud walls: as a sound-absorbing and insulating infill in wall linings and partition walls.
Sloped ceilings and interior insulation: sound absorption and thermal insulation in a single step – warm, quiet living spaces, workspaces, and hobby rooms.
DIY absorbers: as fill for homemade ceiling clouds, wall absorbers, or bass traps.
Thermal Insulation and the Advantage of High Density
PET nonwoven is a recognized thermal insulation material – for example, for attic conversions and interior wall insulation. Conventional insulating nonwovens, however, have a significantly lower density and therefore cannot be sawed cleanly with woodworking machinery. At 67 kg/m³, our nonwoven is considerably denser: it can be cut to size with a circular saw as usual and processed cleanly. Its thickness tolerance of +0/−2 mm is also tighter than that of insulating nonwovens – which is why it is also suitable for our ready-to-install composite panels.
As vapor-permeable PET fiber insulation, the nonwoven regulates wall moisture and creates a comfortable indoor environment: noticeably warmer surfaces, no clammy walls, and consequently often a lower heating demand. It is widely used for interior wall and sloped ceiling insulation – sound insulation and thermal insulation in a single step. PET fiber insulation materials typically fall within thermal conductivity group WLG 035–040; since our nonwoven is denser than conventional insulating nonwovens, its insulating performance is at least comparable. We deliberately do not provide a declared λ value for this specific panel.
Processing and Installation
The high-density nonwoven can be cut to size with standard circular saws. The same processing rules apply as for PET felt panels:
-
Nothing should vibrate or flutter: the workpiece and saw must remain stable, flat, and aligned throughout the cut – otherwise, frictional heat can partially melt the PET (fused areas).
-
Clean, sharp tools and a consistent feed rate ensure a smooth cut.
-
Securing within the cavity: insert, friction-fit, or secure with a tested adhesive; fit snugly between furring strips.
Note: The nonwoven is not self-supporting – it requires a supporting structure (furring, studs, cladding) or bonding to the rigid panel.
Material and Origin
The nonwoven consists of 100 % PET (thermally bonded nonwoven made from PES staple fibers, with approx. 60 % of the fiber content from recycled PET bottles) and is manufactured in Germany (Made in Germany). It contains no chemical additives, is allergy-friendly, resistant to mold, pests, and dust mites, and recyclable at the end of its service life.
- High density (67 kg/m³) – can be sawed with machinery, tight thickness tolerance of +0/−2 mm
- Minimal sorption moisture content (approx. 1.02 % according to DIN 52620)
- Soft and flexible – not self-supporting
- Vapor-permeable – combines sound absorption with thermal insulation
Certifications and Standards
-
Flame-resistant according to EN 13501-1 (B-s1,d0) – corresponds to fire class B1
-
OEKO-TEX Standard 100 – tested for harmful substances
- Resistant to fungi according to DIN EN ISO 846
Technical Properties
| Property |
Value |
| Construction |
Soft, open-pore PET nonwoven (thermally bonded, not hot-pressed); not self-supporting |
| Material |
100 % PET (PES staple fibers), without chemical additives |
| Thickness |
30 mm |
| Areal weight |
2.0 kg/m² (67 kg/m³); approx. 6 kg per 2440x1220x30 mm panel |
| Acoustic function |
Porous broadband sound absorber; also provides thermal insulation |
| Sound absorption class |
C mounted directly on the wall · up to B in a cavity/furring · A suspended or as a nonwoven composite with a 9-mm panel |
| αw |
0.65 (mounted directly on the wall); higher with an air cavity/composite · derived from reference measurements, according to DIN EN ISO 11654 |
| NRC |
0.75 (mounted directly on the wall); higher with an air cavity/composite |
| Frequency range |
Broadband; primarily mid/high frequencies when mounted directly on the wall, extending into the low-midrange with an air cavity |
| Color configuration |
Natural white (technical backing/insulating nonwoven, usually concealed) |
| Made to measure |
Panel size 2440x1220x30 mm; cut to size with a circular saw, thickness tolerance +0/−2 mm |
| Origin |
Made in Germany |
| Recycled content |
Approx. 60 % of the fiber content from recycled PET bottles |
| Environmental declaration |
OEKO-TEX Standard 100; recyclable |
| Fire classification |
Flame-resistant B-s1,d0 according to EN 13501-1 (corresponds to B1) |
| Harmful substance testing |
OEKO-TEX Standard 100 |
| Stability |
Not self-supporting – requires a supporting structure or composite assembly |
| Care |
Maintenance-free when used as concealed infill |
Samples, Data Sheets, and Shipping
Free samples are available in the Samples and Miscellaneous category. Technical data sheets, absorption values, and certificates are available in our download section. As a bulky, lightweight product, the nonwoven is shipped on a pallet as palletized freight via a freight forwarder.
Are you planning a project or do you need custom dimensions? Call us at +49 7248-93566-90 or email [email protected].
