ePTFE Waterproof Breathable Membrane Manufacturer Type: Adhesive Die-cut Vent Film Feature: IP68 Waterproof & Air Permeable Application: Battery, Auto Electronics, Wearable Devices   Inquire Now

Industrial Application Solutions of ePTFE Waterproof Breathable Membrane

Traditional sealing solutions only block moisture without balancing internal cavity pressure. Under long-term temperature fluctuation, rain and dust, failures such as shell bulging, internal condensation and component short circuit frequently occur. With micro-pore structure, ePTFE waterproof breathable membrane realizes integrated protection of waterproof, dustproof and pressure relief to solve sealing pain points of all kinds of industrial precision equipment.

Made of expanded PTFE substrate with 0.2~0.5μm pores smaller than water droplets but larger than air molecules, it stably reaches IP66~IP68 high protection rating. It resists temperature from -40℃ to 130℃, acid, alkali, salt spray and UV aging with stable air permeability for long service life.

Solution 1: New Energy Lithium Battery Industry

Power battery packs and energy storage power supplies release tiny gas during charging and discharging, accumulated pressure inside sealed housings easily causes shell deformation and adhesive separation. Custom self-adhesive die-cut vent membranes from Mimoyin continuously exhaust internal gas to balance pressure, eliminate battery bulging, condensation and water ingress, no extra pressure relief valves required to simplify product structure.

Solution 2: Automotive Electronics Supporting

Vehicle sensors, radars, electronic control units and charging pile boxes work in mud, water and oil. Day-night temperature difference easily generates condensate and corrodes circuit boards. Automotive-grade ePTFE vent membranes pass salt spray and temperature cycling tests, stick firmly with temperature-resistant adhesive, quickly drain internal moisture to guarantee long-term stable operation of auto electronics.

Solution 3: Outdoor Industrial Control & Security Equipment

Surveillance cameras, PLC control boxes and outdoor LED lamps face huge day-night temperature difference. Alternating cold and heat creates negative pressure to suck moisture, leading to lens fogging and circuit short circuit. The vent membrane blocks external rain and dust while balancing cavity pressure to fundamentally eliminate condensation and reduce equipment failure rate.

Solution 4: Consumer Electronics & Smart Wearables

TWS earphones, smart watches and action cameras are frequently exposed to sweat and rain. The ultra-thin composite vent film as thin as 0.15mm does not occupy narrow shell space, balancing IP67 waterproof performance and pressure balance to prevent button jamming, muffled sound and water damage.

Shenzhen Mimoyin Technology owns Class 10,000 dust-free workshop and complete waterproof, air permeability and aging testing equipment. Custom die-cut shapes and adhesive lamination are available with samples delivered within 3-5 working days. All products comply with RoHS standards and support stable mass supply.

If you have customization demands for cavity ventilation and waterproof pressure relief, welcome to contact us for free samples and exclusive industrial solutions.

ePTFE Waterproof Vent Membrane Accessories Series   Type: Self-adhesive Die-cut Vent Patch   Feature: IP68 Waterproof & Pressure Balancing, Wide Temp Resistance   Application: Lithium Battery, Auto Electronics, Wearable Devices   INQUIRE NOW

Earpiece Waterproof Sound Permeable Membrane

The earpieces of mobile phones, tablets and smart watches are often exposed to sweat, rain and mist. Ordinary dust nets cannot block liquid, and water vapor entering the cavity will cause distorted sound, noise and short circuit damage.

Mimoyin earpiece waterproof sound permeable membrane is made of ultra-thin ePTFE acoustic microporous material. It realizes IP67 waterproof and dustproof while transmitting sound waves without loss, avoiding muffled sound and volume attenuation.

The film is thin and flexible, can be laminated with strong double-sided adhesive, and supports round, oval and special-shaped die-cutting. It fits the narrow mounting slot of the earpiece without occupying internal space.

The product resists sweat corrosion and high-low temperature aging, maintains stable performance under long-term sweating and rain exposure, and passes RoHS environmental test.

Widely used in acoustic parts such as smart phones, smart bracelets, Bluetooth earphones, walkie-talkies and security camera earpieces.

We have Class 10,000 dust-free workshop and complete acoustic & waterproof testing equipment. Custom sizes are available, samples can be finished within 3-5 working days with stable mass delivery.

Contact Shenzhen Mimoyin Technology Co., Ltd. if you need earpiece waterproof sound membrane samples and technical solutions.

Speaker Waterproof Sound Membrane   Type: ePTFE Acoustic Film   Feature: IP67 Waterproof & Lossless Sound   Advantage: Ultra-thin Custom Die-cut     INQUIRE NOW

 Speaker Waterproof Sound Membrane Product Description

How does the speaker waterproof sound membrane provide dual protection for electronic devices?
Mimoyin ePTFE speaker membrane adopts micro-pore structure to block water, dust and sweat while allowing sound and air to pass freely. It achieves waterproof performance without sound loss and solves common problems such as water ingress, noise, condensation and blockage.

Will the membrane cause muffled sound or affect sound quality?
No. The ultra-thin film features low acoustic resistance. It does not cause muffled sound, volume attenuation or noise, ensuring original sound quality.

Is it suitable for mobile phone earpieces and speakers?
Yes. Customized for precision sound holes of mobile phone earpieces and speakers, it ensures clear call and playback sound with full waterproof and dustproof performance.

Is it suitable for TWS Bluetooth earphone acoustic cavities?
Perfectly suitable for earphone mic holes, sound outlets and charging case vents. Ultra-thin design avoids shell squeezing and prevents sweat and water mist intrusion.

Is it suitable for smart watches and smart bands?
Highly compatible. It maintains stable IP67 waterproof performance for long-term sweat and rain exposure, ensuring clear sound input and output without blockage or sound damage.

Is it suitable for action cameras and camera microphones?
Yes. With excellent water resistance and weather resistance, it prevents water and fog while keeping recording sound clear in outdoor and wet environments.

Is it suitable for car speakers and vehicle microphones?
Yes. It resists high and low temperature, sunlight aging and moisture, effectively eliminating noise and mic failure caused by internal condensation.

Is it suitable for outdoor waterproof speakers?
Fully compatible with outdoor Bluetooth speakers and waterproof audio devices. It prevents rain and dust without pore blockage or performance failure.

Is it suitable for walkie-talkies and portable communication devices?
Yes. It ensures clear voice communication in humid and rainy outdoor environments and prevents water damage.

Is it suitable for security camera sound pickup holes?
Yes. It protects camera mic holes from dust, water and insect blockage, achieving stable and noise-free recording all weather.

Will sweat and salt cause corrosion or failure?
No. ePTFE material is acid-proof, alkali-proof and salt spray resistant. It will not mold, harden or fail under long-term sweat exposure.

Will the membrane leak water after long rain or soaking?
No. It reaches stable IP67/IP68 waterproof grade, blocking liquid water completely while maintaining air permeability.

Will high or low temperature cause deformation or peeling?
No. The film works stably from -40℃ to 130℃. The temperature-resistant adhesive ensures no shrinking, bulging or peeling.

Can it prevent dust and fiber blockage?
Yes. The micro-pore structure blocks dust, fiber and fine sand, avoiding blocked sound holes and reduced volume.

Can it improve internal condensation and noise?
Yes. It balances internal and external air pressure, releases internal moisture and reduces fogging and abnormal noise.

Can it be die-cut into special shapes for irregular holes?
Yes. Custom shapes such as round, oval, runway and irregular sizes are available to fit various precision acoustic holes.

Will the adhesive edge lift or fall off?
No. High-viscosity temperature-resistant waterproof adhesive ensures stable lamination without lifting or falling off.

Will sound permeability decrease after long use?
No. The ePTFE material does not absorb water or dust, maintaining stable sound permeability for long-term use.

Is it suitable for high-frequency acoustic devices?
Yes. With low acoustic resistance and high sound transparency, it fits both high-frequency and low-frequency precision acoustic equipment.

Is the thin material easy to damage?
No. Although ultra-thin, the film features strong toughness, tear resistance and friction resistance, ensuring stable assembly and long service life.

Headline: SpeakerWaterproof Sound Membrane Type: Adhesive Die-cut Acoustic Film Feature: IP67 Waterproof, Lossless Sound Transmission Application: Earphones, Smart Watches, Car Speakers, Camera Mics INQUIRE NOW

Speakers and earphone microphones are easily corroded by sweat and rain. Ordinary dust nets can’t block water, which causes distorted sound and short circuits.

Mimoyin ePTFE acoustic film reaches IP67 waterproof grade, delivering clear sound without muffling. The thin adhesive film supports customized die-cut shapes.

It is sweat-proof, temperature-resistant and anti-aging, and complies with RoHS environmental standards.

Widely applied to Bluetooth earphones, smart watches, car speakers and camera microphones. Custom specs and fast sampling are available.

We own dust-free workshop and complete testing machines with stable quality. Feel free to contact us for samples.

Action Camera Speaker Waterproof Sound Membrane Type: ePTFE Acoustic Waterproof Film Feature: IP68 Waterproof, Clear Recording Underwater Advantage: Water Pressure Resistant, Ultra-thin Lamination, Sand & Dust Blockage Prevention INQUIRE NOW

Action Camera Speaker Waterproof Sound Membrane

The main cause of noisy outdoor shooting: water and sand clogging inside the speaker cavity.

Hard to balance deep water waterproof performance and clear sound for action cameras? ePTFE sound membrane is the optimal solution.

Water ingress equals loss: calculate the long-term hidden cost of action camera water damage maintenance.

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Electric Toothbrush Pressure Balance Vent Membrane Type: ePTFE Pressure Balance Vent Film Feature: IP67 Waterproof, Internal Air Pressure Balancing Advantage: Bathroom Steam Resistant, Ultra-thin Custom Die-cut, Toothpaste Corrosion Resistant INQUIRE NOW

Electric Toothbrush Pressure Balance Vent Membrane

The main cause of frequent toothbrush failure: condensation and unbalanced internal & external air pressure.

Hard to balance waterproof performance and pressure relief for electric toothbrushes? ePTFE vent membrane is the optimal solution.

Water ingress equals loss: calculate the long-term hidden cost of electric toothbrush short-circuit maintenance caused by water.

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Shaver Pressure Balance Vent Membrane Type: ePTFE Pressure Balance Vent Film Feature: IP67 Waterproof, Balance Internal Cavity Air Pressure Advantage: Resist Steam & Shaving Foam, Ultra-thin Custom Die-cut, Wide Temperature Resistance INQUIRE NOW

Shaver Pressure Balance Vent Membrane

The main cause of shaver malfunction: condensation and short circuit caused by unbalanced air pressure after washing.

Hard to balance waterproof performance and internal pressure relief for washable shavers? ePTFE vent membrane is the optimal solution.

Water ingress equals loss: calculate the long-term hidden maintenance cost of shavers damaged by water short circuit.

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Smart Helmet Acoustic MIC Waterproof Sound Membrane Type: ePTFE Acoustic Sound Film Feature: IP67 Waterproof, Clear Voice Pickup While Riding Advantage: Wind & Sand Resistant, Ultra-thin No Shell Squeezing, Vibration & Temperature Resistant INQUIRE NOW

Smart Helmet Acoustic MIC Waterproof Sound Membrane

The main cause of noisy riding calls: water and sand clogging the helmet microphone holes.

Hard to balance outdoor waterproof performance and high-definition voice pickup for smart helmets? ePTFE sound membrane is the optimal solution.

Water ingress equals loss: calculate the long-term hidden maintenance cost of smart helmets with failed microphones due to water damage.

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