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China Acoustics Vent Membrane Factory - High-Quality Suppliers for Soundproofing Solutions
Membrane Properties
| PHYSICAL PROPERTIES | REFERED TEST STANDARD | UNIT | TYPICAL DATA |
|---|---|---|---|
| Membrane Color | / | / | Grey |
| Membrane Construction | / | / | ePTFE |
| Membrane Surface Property | / | / | Hydrophobic |
| Thickness | ISO 534 | mm | 0.01 ± 0.005 |
| Air Permeability | ASTM D737 (Test Area: 1 cm²) |
ml/min/cm² @ 7KPa | >5000 |
| Water Entry Pressure | ASTM D751 (Test Area: 1 cm²) |
KPa for 30 sec | >50 KPa |
| Transmission Loss | Internal Control (@1kHz, I.D. = 2.0mm) |
dB | < 1 dB |
| IP Rating | IEC 60529 (Test I.D. = 2.0mm) |
/ | IP67 / IP68 |
| ISO Rating | ISO 22810 (Test I.D. = 2.0mm) |
/ | NA |
| Operation Temperature | IEC 60068-2-14 | ℃ | -40℃ ～ 260℃ |
| ROHS | IEC 62321 | / | Meet ROHS Requirements |
| PFOA & PFOS | US EPA 3550C & US EPA 8321B | / | PFOA & PFOS Free |
Product Structure
Product Model & Dimension
| Product Model | Outer Diameter (OD) | Inner Diameter (ID) | Airflow (ml/min @ 7Kpa) | Acoustic Loss (@ 1KHz) |
|---|---|---|---|---|
| 100G20-A2040 | 4.0 | 2.0 | >157 | ≤1dB |
| 100G20-A2450 | 5.0 | 2.4 | >226 | ≤1dB |
| 100G20-A3347 | 4.7 | 3.3 | >427 | ≤1dB |
| 100G20-A3060 | 6.0 | 3.0 | >353 | ≤1dB |
| 100G20-A3376 | 7.6 | 3.3 | >427 | ≤1dB |
| 100G20-A4080 | 8.0 | 4.0 | >628 | ≤1dB |
| 100G20-A5094 | 9.4 | 5.0 | >981 | ≤1dB |
(Note: Dimensions can be customized.)
Transmission Loss Curve
Transmission Loss of ZZPIP-100G20-A acoustics membrane < 1dB @ 1KHz, and < 2.5 dB in the whole frequency range. (XZP-100G20-A)
Technical Notes
(1) Acoustic Response and IP Grade test part dimension: I.D. 2.0 mm / O.D. 6.0 mm.
(2) The results are tested using a typical digital output MEMS microphone system and self-designed test device in ZZPIP laboratory with representative sample size. The design of the device will affect final performance.
(2) The results are tested using a typical digital output MEMS microphone system and self-designed test device in ZZPIP laboratory with representative sample size. The design of the device will affect final performance.
Applications
This series of membranes can be used in waterproof and acoustics membrane for portable and wearable electronic devices, such as Smart Phone, Earphone, Smart Watch, and Bluetooth Speaker, Alertor etc.
Key Protection Benefit
The membrane could provide the device with immersed waterproof protection and minimal sound transmission loss, keeping the device with the excellent acoustics transmission performance.
Shelf Life
Shelf life is 5 years from the date of receipt for this product as long as this product is stored in its original packaging in an environment below 80° F (27° C) and 60% RH.
Important Notice
All data above are typical data for the membrane raw material, for reference only, and should not be used as special data for outgoing quality control.
All technical information and advice given here is based on ZZPIP’s previous experiences and test results. ZZPIP gives this information to the best of its knowledge, but assumes no legal responsibility. Customers are asked to check the suitability and usability in the specific application, since the performance of the product can only be judged when all necessary operating data are available.
Frequently Asked Questions (FAQ)
What is the primary material and structure of the acoustic membrane?
The membrane is constructed using ePTFE (expanded Polytetrafluoroethylene) with a hydrophobic surface property to ensure reliable water resistance and high air permeability.
What IP rating does this membrane achieve?
When tested under IEC 60529 standards (with an inner diameter of 2.0 mm), the membrane achieves an IP67/IP68 rating, providing excellent waterproof capabilities.
What is the typical sound transmission loss of the membrane?
The sound transmission loss is less than 1 dB at 1KHz (with an inner diameter of 2.0 mm), ensuring minimal impact on acoustic performance.
Can the dimensions of the membrane be customized?
Yes, the outer diameter (OD) and inner diameter (ID) dimensions can be fully customized based on client requirements.
What are the storage requirements and shelf life?
The product has a shelf life of 5 years when stored in its original packaging in conditions below 80° F (27° C) and 60% Relative Humidity (RH).
Is this product compliant with environmental standards?
Yes, the membrane meets all RoHS requirements and is certified PFOA & PFOS free under standard US EPA testing methods.