Waterproof Sound-Permeable Membrane \| TPU \| Mimoyin
Waterproof Sound-Permeable Membrane
Mimoyin Technology Co., Ltd. manufactures high-performance TPU waterproof sound-permeable membranes optimized for smart helmets, two-way radios, bone conduction headsets, and outdoor communication devices. Our membranes deliver clear voice pickup while providing IP67/IP68 waterproof protection.
How Sound-Permeable Membrane Works
TPU sound-permeable membranes utilize a micro-perforated or semi-porous structure that allows acoustic waves to transmit with minimal distortion while blocking water droplets and dust. Unlike standard acoustic vents focused on music playback, sound-permeable membranes prioritize voice clarity and wind noise reduction for communication devices.
Technical Specifications
| Parameter | Typical Value | Custom Range |
|---|---|---|
| Base Material | TPU (Thermoplastic Polyurethane) | Customizable |
| Waterproof Rating | IP67 | IP68 available |
| Acoustic Loss | ≤1.5dB @ 1kHz | ≤1.0dB (premium) |
| Wind Noise Reduction | ≥10dB @ 80km/h | Optimized structure |
| Air Permeability | 1000–2500 ml/min @ 7kPa | Customizable |
| Operating Temperature | -30°C to +80°C | -40°C to +100°C |
| Membrane Thickness | 0.08–0.3 mm | Ultra-thin options |
| Adhesive Options | Acrylic PSA | Silicone / Hot-melt |
| MOQ | 1000 pcs (samples 500 pcs) | Negotiable |
All specifications can be customized. Sample lead time: 3–5 days. Mass production: 7–15 days.
Key Applications
- Smart Helmets — Bluetooth communication systems requiring clear voice transmission in high-speed wind. Compare with acoustic vent membranes →
- Two-Way Radios / Intercoms — Rugged communication devices for construction, security, and outdoor activities.
- Bone Conduction Headsets — Open-ear audio devices needing waterproof voice output.
- Action Cameras / Dash Cams — Microphone protection with minimal audio degradation.
- Marine Communication Devices — Saltwater-resistant voice membranes for boating and fishing.
Why Choose Mimoyin Sound-Permeable Membrane
- Voice Clarity Focused — Optimized for speech frequencies (300Hz–3.4kHz).
- Wind Noise Reduction — Structural design minimizes wind turbulence interference.
- Rugged & Flexible — Withstands impacts, vibrations, and repeated flexing.
- IP67/IP68 Certified — Reliable waterproofing in rain, splash, and immersion scenarios.
- Custom Die-Cutting — Precision shapes for helmet cutouts, radio grilles, and camera housings.
Frequently Asked Questions
What is the difference between sound-permeable and acoustic vent membranes?
Acoustic vent membranes focus on music playback quality (flat frequency response). Sound-permeable membranes prioritize voice clarity and wind noise reduction for communication devices.
Can this membrane reduce wind noise?
Yes, our TPU sound-permeable membranes feature structural optimization that reduces wind noise by ≥10dB at speeds up to 80km/h.
Is it suitable for bone conduction devices?
Yes, the membrane allows vibration transmission while protecting internal components from water and dust.
How does it perform in heavy rain?
IP67-rated membranes withstand heavy rain and temporary immersion. IP68 versions handle continuous submersion.
Can I get samples for testing?
Yes, we provide free samples (customer covers shipping). Lead time: 3–5 working days. Request samples now →
Is it compatible with existing helmet designs?
Yes, we offer custom die-cutting based on your CAD drawings or physical samples for seamless integration.
Improve Voice Clarity in Harsh Environments
Contact our engineering team for technical consultation, free samples, and custom die-cutting solutions for your communication devices.
Related guide: See the complete Acoustic Vent Membrane overview for material comparisons, selection criteria, and application design.