AE-TECH helps identify the noise or vibration source, compare NVH401 and NVH201 by installation location, and define a technical-evaluation pathway for NVH Foam.
Quick answer
The same vehicle may require different approaches by transmission path and location. Better inputs make the material direction easier to evaluate.
Air-borne noise
Record where the noise is heard and the operating conditions in which it appears.
Structure-borne vibration
Review the source or transmission point together with the related surface and structure.
Location-based treatment
Floor, doors, luggage area, roof and engine-bay-adjacent locations have different packaging constraints.
The models are not complete substitutes. Select by location, space and whether the materials are used independently or together.
| Criterion | NVH401 | NVH201 |
|---|---|---|
| Structure | Four layers: MLV, foam rubber, aluminium foil and butyl rubber. | Two layers: butyl rubber and aluminium foil. |
| Thickness | 5 mm. | 2 mm. |
| Role | A multilayer structure for locations with sufficient installation space. | A thinner, more flexible structure used independently or alongside NVH401. |
| Suitable locations | Floor, doors, luggage area and engine-bay-adjacent locations. | Roof, doors, luggage area and locations where NVH401 is difficult to install. |
NVH401 and NVH201 support location-based vehicle treatment; NVH Foam follows a project-specific technical evaluation.
NVH401
NVH401 combines MLV, foam rubber, aluminum foil and butyl rubber in a four-layer, 5 mm structure. It can be considered where a multilayer structure is required; final selection depends on the vehicle model, location and installation conditions.
NVH201
NVH201 combines butyl rubber and aluminum foil in a two-layer, 2 mm structure. It is thinner and more flexible than NVH401 and may be used independently at suitable locations or together with NVH401 in the same treatment plan.
NVH Foam
NVH Foam is intended for automotive production and assembly contexts, not as a conventional aftermarket adhesive sheet. Selection must begin with the location, substrate, process step, technical requirements and integration method.
These blocks show source-supported components, not the ratio or thickness of each individual layer.
MLV
NVH401
Foam rubber
NVH401
Aluminium foil
NVH401 + NVH201
Butyl rubber
NVH401 + NVH201
AE-TECH compares the configuration with the vehicle and treatment scope before implementation.
A project-specific technical-evaluation pathway, not an aftermarket sheet-material choice.
Describe the component, operating conditions or technical issue so AE-TECH can prepare the right discussion.
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