Welded vent membrane

SST-Porous® BD01 Weldable ePTFE Vent Membrane is independently developed by SST. It is formed by thermally laminating SST-Porous® PTFE breathable membrane with polyester non-woven fabric substrate under precise temperature, pressure, and speed conditions. The composite maintains high air permeability and average pore size while offering excellent delamination resistance. It is easily weldable with various plastic materials using ultrasonic or thermal fusion methods. Delivers IP67/IP68/IP69 protection, reliable pressure equalization, and simple installation. Widely used in Home Electronics, Outdoor Lighting, Photovoltaic Equipment, Security Electronic Equipment, Communication Devices, and Portable Electronic Devices.

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Spider Protective Vents for Welding Integration

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描述

Sealed electronic housings often face pressure differentials caused by temperature changes, leading to condensation, seal failure, and reduced reliability. Traditional vent membranes can be difficult to integrate and prone to delamination when welded with plastic housings.

SST-Porous® BD01 Weldable ePTFE Vent Membrane, independently developed by SST, solves these challenges. By thermally laminating high-performance PTFE membrane with polyester non-woven fabric under precise conditions, it maintains excellent air permeability while achieving strong bonding strength and delamination resistance. This makes it ideal for direct ultrasonic or thermal fusion welding with various plastic materials, enabling simple, reliable, and permanent integration into equipment housings.

SST is committed to providing professional waterproof, dustproof, and breathable solutions with high consistency and long-term stability to enhance equipment reliability and extend service life.

1. Breathability
SST-Porous^® welded BD01 series vent membrane is composed of SST-Porous^® breathable membrane and polyester non-woven fabric (non-woven fabric), which is compounded by hot pressing Made of, has excellent breathability.

BD 01 series breathable membrane-small air permeability

BD 01 series breathable membrane-medium air permeability

BD 01 series breathable membrane-large air permeability

BD 01 series breathable membrane-extra large air permeability

Typical breathability

gt; 500

1000~2000

2500~3000

Above 5000

Note:

※ The air permeability test is the air permeability before use, unit: ml/min/cm2

※ Test pressure difference, at ΔP = 70 mbar, RT

2. Waterproof
In the structure of the SST-Porous^® welded BD01 series breathable membrane, the SST-Porous^® breathable membrane is composed of “fibers” and “nodes”. The mesh structure not only has excellent breathability, but also has excellent waterproof effect.

	BD 01 series breathable membrane-small air permeability</td >	BD 01 series breathable membrane-medium air permeability</td >	BD 01 series breathable membrane – large air permeability</td >	BD 01 Series Breathable Membrane – Extra Large Breathability</td >
Hydrostatic pressure	gt; 100	gt; 50	gt; 20	gt; 10
IPProtection level<& ==&td>	IP54, IP65/ IP66 (depending on the installation structure), IPX7, IPX8, IP69K<&== &td>	IP54, IP65/ IP66 (depending on the installation structure), IPX7, IPX8	IP54, IP65/ IP66 (depending on the installation structure), IPX7	IP54, IP65/ IP66 (depending on installation structure), IPX7
Note: ※ Hydrostatic pressure test conditions, Dynamic WEP 30 sec, RT, unit: kPa

3. Hydrophobic and oleophobic properties
In order to meet different application requirements, SST-Porous^® can provide water-blocking film (hydrophobic film) and super water-blocking film (oleophobic film). When faced with low surface tension liquids, SST- Porous^®Welded BD01 series breathable membranes can meet the requirements of hydrophobic and oleophobic<&== &span>Function.

※ BD 01 series breathable membrane oleophobic properties: Level 8 oleophobic

4 .Weldability
SST-Porous^®Welded BD01 series breathable membrane can be hot melt or ultrasonic welding Fixed to the plastic shell.

1). Common plastic categories that can be welded: ABS, PBT, PP, HDPE, PA6, PC, etc.

2).Selection of hot melt welding temperature: mainly depends on the melting point (Tm) of the plastic, which is generally higher than the melting point of the selected plastic 30~50℃ can be successfully welded.

5. Reliable welding
The carefully designed SST-Porous^® welded BD01 series breathable membrane takes into account the welding characteristics of different material surfaces, and has the characteristics of high welding fastness, safety and reliability. Welding fastness performance.

6. High and low temperature resistance
SST-Porous^®Welded BD01 series breathable membrane, high and low temperature characteristics:- 40 °C ~ 160 °C

Description:

1) The use temperature of the product mainly depends on the final use temperature of the double-sided tape or the base material of the breathable film;

2) For specific temperature requirements, SST application engineers can provide adhesive breathable membrane products with a wider operating temperature range

7. Does not contain PFOA
SST-Porous^® welded BD01 series breathable membrane uses a different material from the PTFE raw material used in e-PTFE. It is obtained from suspension and does not require an emulsifier – perfluorinated Octanoic acid (PFOA) (PFOA is suspected of being carcinogenic). Therefore, SST-Porous^® welded BD01 series breathable membrane does not contain PFOA harmful substances.

For the specially designated SST-Porous^® welded BD01 series breathable membrane, you can choose PTFE dispersion raw materials prepared with environmentally friendly emulsifiers, thus making SST-Porous^{®< /sup>Waterproof and breathable membrane does not contain PFOA.}

8. Customizability
SST-Porous^®Welded BD01 series breathable membranes can be selected in different stacking methods, different specifications, sizes or shapes according to customer needs.

※The outer diameter (OD) and inner diameter (0) of the breathable membrane can be selected

Outer diameter (OD) size: 0mm

Inner diameter (ID) size: 1~28 mm

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Note:

SST can finalize welded breathable membrane products of different shapes or specifications according to customer drawings or ideas

※Supply method

Supply method	Description of supply
Format	Normal version is between 50~150Pcs
Single row roll	Single roll length 50~100 meters/roll
Multiple rows of rolls	Single roll length 50~100 meters/roll

Featured Resources

Data Sheet & Installation Guide: GORE® Protective Vents – Screw-In Series

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Proven Venting Strategies to Improve Electronics’ Reliability

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A Durable and Easy-To-Apply Vent Solution

STT® Protective Vents Adhesive Series provides:

Large ventilation capacity

Sound loss is less than 2dB, maintaining excellent sound quality

High protection level

IP67 / IP68 / IP69K optional

Easy to solder

Ultrasonic or hot melt welding optional

Automotive Electronics

Prevent Condensation and Corrosion: In automotive environments with rapid temperature fluctuations, welded vent membranes allow water vapor to escape quickly while blocking liquid water, dust, and oil, effectively preventing internal condensation and corrosion.
Protect Sensitive Electronic Components: The permanent welded installation provides superior protection for ECUs, sensors, ADAS modules, and circuit boards against moisture and contaminants.
Balance Internal and External Pressure: Temperature and altitude changes create pressure differentials that can damage seals. Welded vent membranes enable real-time gas exchange to maintain pressure equilibrium.
Withstand Vibration and Shock: The strong welded bond ensures excellent durability under high vibration and mechanical shock, maintaining long-term reliability in vehicles.

In summary, Welded vent membrane in automotive electronics effectively prevents condensation and corrosion, protects sensitive components, balances pressure differentials, and withstands vibration and shock, significantly enhancing the reliability and longevity of electronic systems in vehicles.

Outdoor and Industrial Electronics

Prevent Condensation and Corrosion: Outdoor and industrial equipment exposed to harsh weather conditions easily suffers from condensation. Welded vent membranes allow moisture vapor to escape while blocking rainwater, dust, and pollutants, keeping interiors dry.
Protect Precision Components: The robust welded design effectively shields circuit boards, power modules, and sensors from environmental ingress, extending equipment service life.
Balance Internal and External Pressure: Extreme temperature variations generate significant pressure differences. Welded vent membranes provide reliable real-time pressure equalization to prevent enclosure damage.
Enhance Durability in Harsh Environments: The permanent weld ensures high resistance to UV, salt spray, and mechanical stress, improving overall system reliability in demanding outdoor and industrial settings.

In summary, Welded vent membrane in outdoor and industrial electronics effectively prevents condensation and corrosion, protects precision components, balances pressure differentials, and enhances durability in harsh environments, greatly improving equipment protection and long-term performance.

Consumer Electronics and Precision Instruments

Prevent Condensation and Corrosion: Compact consumer electronics and precision instruments are susceptible to internal condensation due to environmental changes. Welded vent membranes enable efficient vapor transmission while blocking moisture and dust.
Protect Core Components: The welded installation offers reliable protection for delicate electronics, batteries, and sensors against contamination and moisture damage.
Balance Internal and External Pressure: Temperature fluctuations in portable devices create pressure issues. Welded vent membranes allow rapid gas exchange to avoid stress on housings and seals.
Support Automated Production and Miniaturization: The weldable design is ideal for high-volume automated assembly and low-profile enclosures, ensuring consistent quality and space efficiency.

In summary, Welded vent membrane in consumer electronics and precision instruments effectively prevents condensation and corrosion, protects core components, balances pressure differentials, and supports automated production, significantly improving product reliability, compactness, and manufacturing efficiency.

SST® PolyVent XS

Compact, low-profile design; 30% smaller than our Standard vents

STT® PolyVent XS

Compact, low-profile design; 30% smaller than our Standard vents

STT® PolyVent XS

Compact, low-profile design; 30% smaller than our Standard vents

Every Screw-In Series vent undergoes in-line quality inspection at Gore before it is shipped. All vents with M6 and M12 thread sizes are individually laser-marked, to provide full product traceability.

Products in the GORE Protective Vents Screw-In Series have been fully tested by independent laboratories and certified to meet a range of IEC and DIN testing standards for durability/resistance to environmental challenges including:

IP Ratings
Mechanical Impact Testing
Solar Industry Testing
Salt Fog Testing

Temperature Testing
Humidity Testing
Flammability and UV Resistance Testing
Vibration Testing

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Technical Parameters

Products	Low air permeability, high protection level			Trademark		Smart Membrane®-Vent
product name	BD W0020045			Product ID		/
Product performance and features
Waterproof breathable product main function		Our products can provide excellent protection performance and durability in harsh environment
		Test Standard	Characteristic value		Notes
IP grade		IC	IP67/IP68		Specific depends on the actual application requirements
Water entry pressure, kPa			≥ 70		The testing area is 1cm2, and the testing time is 50seconds
typical air permeability mL/min/cm2@7kPa		Industry Standards	600		Actual test air permeability with a test area of 1cm2
Minimum air permeability mL//min/cm2@7kPa		Industry Standards	400
Operation Temperature		GB/T2423.1-2008	T min = _40℃ ；T max = +160℃		To make a finished product, the temperature of use needs to consider other components, such as the type of double-sided adhesive and the type of plastic
Surface Properties		（AATCC） 118-2018	Hydrophobic		Oil repellent modification can be carried out according to practical applications
Category			100% Expanded Polytetrafluoroethylene(e-PTFE)

Structure		Pure film, no backing material
Thickness ，mm	GB 6672-86	0.2±0.03
Application	Waterproof, breathable, and filtered
Function	Quickly balance pressure to extend service life, effectively manage condensation, and reduce the design complexity, weight, and cost of the casing； Provide reliable protection for sensitive electronic devices from water and other liquids； Effectively shield pollutants such as dirt, dust, or salt.

Welded vent membrane

Welded vent membrane