Kunshan Xinzhenpin New Thin Film Material Technology Co LTD.
| Thickness | 0.10 – 0.50 mm |
| Oleophobicity Grade | ≥ 7 |
| Chemical Resistance | Corrosion-resistant，Acid-resistant |
| Packaging Details | Small orders by express; bulk orders by FCL sea freight. |
| Moisture Vapor Transmission Rate | 8,000 – 18,000 g/m²·24h |
| Delivery Time | 15 working days |
| 90° Peel Strength | ≥ 15 N/25mm |
| Material Compliance | PFAS Free |
| Air Permeability | Gurley：3 – 30 s/100ml @ 300 ml |
| Waterproof Rating | IP68 |
| Operating Temperature | -40°C to +150°C |
| Water Entry Pressure | ≥ 400 kPa |
| Size | Customizable |
| Supply Ability | Monthly Output: 300,000 sqm |
| Color | White |
| Payment Terms | T/T |
| Place of Origin | China |
| Certification | IATF16949/ISO |
| Brand Name | OEM/ODM |
| Model Number | OEM/ODM |
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Product Specification
| Thickness | 0.10 – 0.50 mm | Oleophobicity Grade | ≥ 7 |
| Chemical Resistance | Corrosion-resistant，Acid-resistant | Packaging Details | Small orders by express; bulk orders by FCL sea freight. |
| Moisture Vapor Transmission Rate | 8,000 – 18,000 g/m²·24h | Delivery Time | 15 working days |
| 90° Peel Strength | ≥ 15 N/25mm | Material Compliance | PFAS Free |
| Air Permeability | Gurley：3 – 30 s/100ml @ 300 ml | Waterproof Rating | IP68 |
| Operating Temperature | -40°C to +150°C | Water Entry Pressure | ≥ 400 kPa |
| Size | Customizable | Supply Ability | Monthly Output: 300,000 sqm |
| Color | White | Payment Terms | T/T |
| Place of Origin | China | Certification | IATF16949/ISO |
| Brand Name | OEM/ODM | Model Number | OEM/ODM |
| High Light | White Acoustic Vent Membrane ，Microphone Array Acoustic Vent Membrane ，Automotive Microphone Array EPTFE Vent | ||
EPTFE Automotive Hands Free Microphone Array Acoustic Vent Membrane
This EPTFE acoustic vent membrane is specifically designed for in-vehicle hands-free microphone arrays mounted in headliners, overhead consoles, seatbelt assemblies, or integrated into the infotainment system. It protects the MEMS microphones from humidity, spilled drinks, and interior cleaning fluids while ensuring crystal-clear voice pickup for Bluetooth calls and voice commands. The membrane maintains precise acoustic phase and amplitude matching across all microphones in the array, which is essential for beamforming and echo cancellation algorithms used in modern cars. With a thickness of just 0.10 mm and a matte black finish, it integrates invisibly into the cabin’s aesthetic surfaces. The material is tested for automotive interior fogging, odor, and VOC emissions, meeting OEM specifications for in-cabin components. It operates flawlessly from sub-zero cold starts to extreme summer greenhouse temperatures, maintaining consistent acoustic impedance over the full automotive temperature range.
In-car voice communication is central to the connected car experience, but microphones located in the headliner or overhead console are vulnerable to condensation from sunroof leaks, spilled beverages, and cleaning sprays. Moisture bridging across microphone ports causes crackling, muting, or permanent sensitivity loss. This EPTFE vent acts as an invisible shield that prevents liquid ingress while remaining acoustically transparent. By keeping all microphones in an array at the same dry, clean condition, it ensures beamforming accuracy and reliable wake-word detection for voice assistants. The solution reduces OEM warranty claims related to microphone failure and improves scores in customer satisfaction surveys for hands-free calling quality.
| Parameter | Typical Value |
|---|---|
| Material | EPTFE, matte black |
| Thickness | 0.10 ± 0.02 mm |
| Acoustic Insertion Loss (100 Hz – 8 kHz) | ≤ 1.0 dB |
| Inter-Microphone Phase Match | ≤ 2° at 1 kHz |
| Water Entry Pressure | ≥ 0.12 MPa |
| Fogging (DIN 75201) | Pass (low fogging) |
| VOC/Odor | Pass VDA 270 |
| Operating Temperature | -40°C to +105°C |
| Adhesive | Automotive-approved, UV-resistant acrylic |
Overhead console microphone arrays, seatbelt integrated microphones, sun visor mics, and central infotainment system voice command mics.
Sound waves from the driver and passengers pass through the EPTFE membrane with minimal amplitude and phase alteration. The hydrophobic pores prevent any liquid—from coffee spills to condensation—from wetting the MEMS microphone element. The membrane’s low mass and high compliance ensure that it does not introduce resonant peaks in the voice band. Because each microphone in the array sees an identical vent, the beamforming algorithm’s directional calculations remain accurate.
A: Yes, the hydrophobic surface repels coffee, soda, and other sugary drinks. The liquid beads up and can be blotted away without reaching the microphone.
A: No. The broadband acoustic transparency preserves the full voice spectrum, so automatic speech recognition performance is identical to an unprotected microphone.
A: We validate using AEC-Q100-REV H stress tests: 1000 temperature cycles (-40°C to +105°C), 1000 hours of biased humidity (85°C / 85% RH), and vibration profiles per ISO 16750-3.
Company Details
Business Type:
Manufacturer,Exporter
Year Established:
2018
Total Annual:
1,000,000-2,000,000
Employee Number:
30~50
Ecer Certification：
Verified Supplier
Kunshan Xinzhenpin New Thin Film Material Technology Co., Ltd. Established in 2018, Kunshan Xinzhenpin is a specialized manufacturer dedicated to ePTFE waterproof and breathable membrane solutions. We operate a fully integrated production chain covering ePTFE raw membrane manufacturing, composite a... Kunshan Xinzhenpin New Thin Film Material Technology Co., Ltd. Established in 2018, Kunshan Xinzhenpin is a specialized manufacturer dedicated to ePTFE waterproof and breathable membrane solutions. We operate a fully integrated production chain covering ePTFE raw membrane manufacturing, composite a...
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