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  • 3M™ Thinsulate™ Acoustic Insulation TAI4031AL
  • 3M™ Thinsulate™ Acoustic Insulation TAI4031AL

    3M ID B40068144
    • Lightweight mat material is engineered specifically as an acoustic absorber for automotive interiors
    • Non-woven sound absorbing fibers create a quieter vehicle environment
    • Hydrophobic fibers resist moisture, mold and mildew
    • Can be converted through standard techniques such as die-cutting
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    Product Details
    • Lightweight mat material is engineered specifically as an acoustic absorber for automotive interiors
    • Non-woven sound absorbing fibers create a quieter vehicle environment
    • Hydrophobic fibers resist moisture, mold and mildew
    • Can be converted through standard techniques such as die-cutting
    • Global portfolio and technical expertise help ensure you choose the right solution to meet your goals

    Our 3M™ Thinsulate™ Acoustic Insulation TAI4031AL is engineered specifically for automotive sound absorption in a thin, lightweight mat material. With an overall thickness of just 26 mm and a basis weight of 472 g/m2, this material features excellent compressibility and recovery. An aluminized polyester film surface provides an excellent vapor barrier.

    Designed for Automotive Acoustic Performance
    Part of our TAI family of acoustic absorbers for automotive OEM, 3M™ Thinsulate™ Acoustic Insulation TAI4031AL is a thin, light mat insulation and an excellent NVH material for applications where noise and mass reduction (PDF, 2.59 Mb) are major goals. Its internal web features thick and thin fibers and is designed specifically to absorb vibration and help reduce unwanted noise from traveling throughout vehicles.

    Built for Lasting Noise Absorption
    The internal web of the product is composed of a combination of polyester (PE) and polypropylene (PP) fibers. The PP fibers are extremely fine, allowing for high-energy absorption without adding weight. The thicker PE fibers add loft, strength and stability to the web. The aluminized scrim provides an excellent vapor barrier.

    Properties of 3M™ Thinsulate™ Acoustic Insulation TAI4031AL
    This acoustic insulation mat material has a caliper of 26 mm and a basis weight of 472 gm/m².

    Compressible and Conformable for a Range of Applications
    Thinsulate Acoustic Insulation TAI4031AL is designed for excellent compressibility and recovery. This is ideal for application to vertical surfaces in vehicle cabins, such as inside door panels and for stuffing pillars. Its light weight also makes it effective for non-load bearing horizontal surfaces, such as package trays, luggage compartments and in combination with headliners, for extremely consistent noise absorption throughout the application.

    Our Thinsulate Acoustic Insulation TAI4031AL can be processed by conventional techniques such as die cutting. It attaches easily using ultrasonic welding, hot melt adhesive or mechanical fasteners.

    Recommended Applications:

    • Instrument panels
    • Head liners
    • Wheel wells
    • Truck liners
    • Vehicle pillars
    • Instrument panels
    • Parcel trays

    Reasons Why Automotive Manufacturers Choose 3M™ Thinsulate™ Acoustic Insulation
    • Quieter Vehicles. Provides highly efficient acoustic absorption, particularly in middle- to high-frequency ranges.
    • Lighter Vehicles. Thinsulate acoustic insulation products are made from lightweight polyester and polypropylene non-woven fibers.
    • Easy to Install. Lightweight and easy to handle compared fiberglass, shoddy, felt and PET.
    • Mold, Mildew and Moisture Resistant. Install just the insulation — there's no need for an additional waterproof layer during application. Thinsulate acoustic insulation is also resistant to mildew growth, reducing the risk of offensive odors.
    • Efficient Assembly. Attach our acoustic insulation using a variety of methods including ultrasonic welding, double-sided tape or mechanical clips.
    • Manufacturing Support. Thinsulate acoustic insulation is supported by a global network of 3M experts. Custom die cutting services are available.

    The Science Behind How Thinsulate Acoustic Insulation Absorbs Noise
    All sound is transmitted through the air as waves. These acoustic waves oscillate at differing frequencies. When oscillating waves contact the fine fibers of our Thinsulate acoustic insulation, the resulting friction turns their acoustic energy into heat. The heat irreversibly dissipates and reduces sound. As a result, Thinsulate acoustic insulation applied to automotive interiors reduces interior noise for a quieter, more comfortable ride.


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