Increasing requirements in air quality as well as the rising industrial safety demands are driving the need for gas sensor technology that performs reliably, accurately, and for longer lifespans. Whether these be wearables, smart home applications, or industrial applications such as power generation or chemical facilities, a key performance driver of these gas sensors is the track-etched membrane technology which can facilitate faster detection, pressure equalization, and protection against contaminants. Oxyphen utilizes decades of experience to supply track-etched membrane technology with the broadest range of pore sizes and distributions – all while offering the lowest tolerances on the market.
Our unique membranes offer distinct advantages over mechanical vents or physical openings, since intrusion of dust and moisture can be avoided and there are no moving parts that can stick or only work in one direction. Unlike competing track-etched technology, Oxyphen’s membranes will not have affinity to shrinkage or deformation and can withstand temperature fluctuations as well as exposure to most chemicals.
When manufacturers partner with Oxyphen, they can be assured of receiving a consistent membrane permeability that is 100% quality controlled, free of PFOA ingredients, and per their specific application’s pore size, air flow rate, adhesion level, and material requirements.
We look forward to partnering with you on new opportunities – from the conceptual phase to the product launch – so that we can bring your next-generation sensor product to life.
- Allows for faster diffusion of target gases, leading to faster detection
- Reduces pressure build-up and allows heat to escape electronic enclosures, preventing premature failure
- Protects the internal components by repelling water, sweat, oils and other liquids
- Free of PFOA: Compliant with (EC) 1907/2006 REACH / Regulation (EU) 2019/1021 POP
- Optimal flow control for better sensor accuracy
- Membrane permeability can be customized precisely to customer requirements
- Chemical inertness for most substances
- Good temperature resistance (-40OC to +180OC)
- Better recyclability
- No material shrinkage
- Great weldability
- Economically friendly compared to ePTFE
- High mechanical resistance
- Injection molding (2K)
- Punch & welding
- Cleanroom ISO class 7
- Membrane assembly
- Packaging for OEM businesses
|Water Entry Pressure||
Up to 3 bar
Up to 371 / (bar cm2 min)
-40 to +180°C
- PET Track-Etched Membranes unlaminated
- PET Track-Etched Membranes laminated with PET/ PP non-woven material
- Additional membrane materials available upon request
|Specification||Unique-Mem® Track-Etched Membranes||RoTrac® Track-Etched Membranes|
10, 13, 14.5, 20 & custom sizes
|High Quality Raw Materials||
PET – naturally slightly hydrophilic
PC – naturally slightly hydrophobic
PET-Membrane/ PET-Nonwoven –harder
PET-Membrane/ PP-Nonwoven – softer
|Pore Size Ranges||
0.1µm to 10µm
0.2µm to 3.0µm
|Pore Density Ranges||
105 to 109 pores per cm2
2×106 bis 3×108 pores per cm2
8µm to 50µm
90µm to 220µm
– 40°C and 160°C (for special application < 200°C)
– 40°C and 130°C (for special application < 160°C)
|Air Flow Ranges||
Up to 800 l / (bar cm2 min)
Up to 37 l / (bar cm2 min)
Various hydrophilic treatments increase water flow rate and wetting abilities of the membrane (example: PVP treatment)
|Hydrophobic / Oleophobic Treatment:||
Grade up to 7.5; AATCC TM 118
|Salt spray resistance test2||
According to IEC 60068-2-52, based on validation by the customer
|Temperature resistance test1||
In accordance with ISO 16750-4
|Ice water shock test1&2||
In accordance with ISO 16750-4
|Climate resistance test||
In accordance with ISO 16750-4
|Chemical resistance test1||
According LV124/ ISO 16750-5
IP 64/65/66/67/68, according to DIN 40050
1 Testing in Progress
2 Based on Customer Validation
OxyDisc® Product Brochure
Learn more about OxyDisc® die-cut membrane discs that can be produced using either hydrophobic or hydrophilic membranes and easily handled and mounted using multiple assembly options to suit a variety of industries.
OxySeal® Product Brochure
Learn more about OxySeal® pressure compensation units that are designed to be a plug & play solution for easy integration into existing product assemblies while protecting from any environmental impact.
OxyPad® Product Brochure
Learn more about OxyPad® 100% PFOA-free hydrophobic and oleophobic-treated self-adhesive pads that provide consistent pressure equalization to reduce seal stress, minimize condensation, and protect the housing.
Register for our On-Demand Webinar
Delivering Precision & Control: An Introduction to Track-Etched Membrane Technology
OxyPad® Self-Adhesive Pads
OxyPad® membrane pads, which are easily integrated inside or outside your housing design, promote consistent pressure equalization and protection against water, dust, and other harmful particulates.
OxyDisc® Die-Cut Membrane Discs
OxyDisc® die-cut membrane discs can be easily mounted and produced using either hydrophobic or hydrophilic membranes for a variety of filtration or venting application requirements.
OxySeal® Pressure Compensation Units
OxySeal® pressure compensated venting plugs, which are available with hydrophobic or oleophobic treated membranes, can prevent the ingress of liquid, water, dust, dirt, salt, and other contaminants.
Membrane Technologies Available
Unique-Mem® Unlaminated Track-Etched Membranes
Unique-Mem® track-etched membranes, available as hydrophilic or hydrophobic, are characterized by cylindrical shaped pores penetrating the membrane in different angles. They have a smooth flat surface and well-defined flow rates.
RoTrac® Laminated Track-Etched Membranes
RoTrac® track-etched membranes are Unique-Mem® membranes that are supported with non-wovens (PP or PET) to create a more robust membrane. They are available as either hydrophilic or hydrophobic membranes.
Fiber-based membranes are surface modified using a super-hydrophobic coating to repel water and other liquids while still allowing maximum airflow.
Interested in speaking with one of our track-etched membrane experts?