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OxyDisc® Membrane Discs

Easy Assembly of Die-Cut Hydrophobic & Hydrophilic Membranes

OxyDisc® die-cut membrane discs can be easily mounted and produced using either hydrophobic or hydrophilic membranes for any filtration or venting application. 

The discs can be manufactured on a liner for use in a high-speed processing system or individually in special blister packaging. While offered in standard sizes, customized shapes and sizes can be provided. Both of Porex’s track-etched membrane technologies, UNIQUE-MEM® and ROTRAC®, are available in this disc format. 

OxyDisc® die-cut membrane discs are available in both standard and customizable sizes for both unlaminated and laminated track-etched membranes.
  • 100% Free of PFOA: Compliant with (EC) 1907/2006 REACH / Regulation (EU) 2019/1021 POP
  • Easy to handle
  • Ideal for a disposable solution
  • Various mounting options, such as welding, clamping and sticking

  • Diameter (mm): 13, 25, 37, 47, 50 (Note: Other diameters available upon request)

  • PET with no lamination
  • PET with lamination of PET or PP (hydrophilic or hydrophobic)
Specification Unique-Mem® Track-Etched Membranes RoTrac® Track-Etched Membranes
Bandwidth (mm)
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
Thickness Ranges
8µm to 50µm
90µm to 220µm
Temperature Ranges
– 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)
Hydrophilic Treatments
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 Protection1
IP 64/65/66/67/68, according to DIN 40050

1 Testing in Progress

2 Based on Customer Validation

  PC POM PBT PE PET PA PP PVC Silicone PS TPE EVA Natural Rubber Synthetic Rubber Metal Glass
Adhesive Sealing x x x x x x x x x x x x x x x x
Ultrasonic welding x x x x x x x x x x x x – – – –
Heated dies x x x x x x x x x x x x – – – –
Mechanical fit x x x x x x x x x x x x x x x x
Insert molding x x x x x x x x x x x x – – – –

Membrane Technologies Available

Technologies

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.​.

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Technologies

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.

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Technologies

Fiber-Based Membranes

Fiber-based membranes are surface modified using a super-hydrophobic coating to repel water and other liquids while still allowing maximum airflow.

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