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TECHNOLOGIES

RoTrac® Laminated Track-Etched Membranes

Laminated Membranes for Increased Robustness, Weldability and Stress Resistance

SEM image showing the track-etched membrane with the supporting laminate layer for added strength

RoTrac®aminated track-etched membranes are based on Unique-Mem®Membrane technology – consisting of a single, unsupported PET or PC membrane layer – supplemented by an additional PP or PET nonwoven carrier layer. – Etched membranes are based on

The laminates are adhesive-free and are manufactured by thermal bonding for easier cleaning. RoTrac® laminated membranes are available in various thicknesses and custom dimensions and can be treated with hydrophilic, hydrophobic, or oleophobic properties as required.

​All Oxyphen membranes are PFOA-free and can be used freely in accordance with the latest REACH legislation from July 4, 2020.​

  • Improved mechanical robustness and weldability​
  • Thermal bonding process – adhesive-free​
  • Constant flow rates and WEP properties​
  • Adjustable burst pressure rate​
  • Hydrophil, hydrophob oder oleophob (erweiterte hydrophile Beschichtung verfügbar)​​
  • Protection class IP 6X according to DIN 40050​​
  • Protection class IP 6X according to DIN 40050​
  • Resistant to gamma ray and X-ray sterilization​​
  • 100% PFOA-free: Compliant with (EC) 1907/2006 REACH / Regulation (EU) 2019/1021 POP
    ​

Specification RoTrac® Track-Etched Membranes
Bandwidth (mm)
10, 13, 14.5, 20 & custom sizes
High Quality Raw Materials
PET-Membrane/ PET-Nonwoven –harder
PET-Membrane/ PP-Nonwoven – softer
Pore Size Ranges
0.2µm to 3.0µm
Pore Density Ranges
2×106 bis 3×108 pores per cm2
Thickness Ranges
90µm to 220µm
Temperature Ranges
– 40°C and 130°C (for special application < 160°C)
Air Flow Ranges
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

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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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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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