ePTFE · Venting & pressure managementbronrytechnology@gmail.com
1.0 mm PE high-barrier foil vent liner

Catalogue images illustrate reference configurations. Please confirm BRONRY availability, final appearance, materials and performance specifications for your project.

BRONRY / BR-29

1.0 mm PE high-barrier foil vent liner

Foam and foil liner formats for vented packaging closures.

Reference specificationsAirflow500-3000 mL/min/cm2

Application-led selection

Closure integration; confirm liner diameter, thickness, sealing process and cap interface.

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01 / TECHNICAL DATA

A closer look at the specification.

Reference catalogue values for this configuration. Confirm the final BRONRY specification and test report before use.

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Airflow500-3000 mL/min/cm2
Ingress protectionIP67–IP68; 2 m immersion for 1 hour stated in reference
Membrane materialExpanded PTFE (ePTFE)
Membrane propertiesWater protection, Dust protection, Breathable, Oil resistance
Sealing methodInduction sealing
ConstructionePTFE / sealing film + aluminum foil + wax + paperboard
Liner materialPE

An airflow value without a stated pressure differential cannot be directly compared with another test. Component IP information does not establish the rating of your finished enclosure.

02 / DESIGN & DIMENSIONS

Check the interface before integration.

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Reference illustrations may contain Chinese annotations. They are for format comparison; use the approved drawing for production and tooling.

03 / INSTALLATION

Good integration starts with the interface.

  1. Check the cap interface, liner size and sealing land before installation.
  2. Match the sealing process to the liner construction: compression or induction where applicable.
  3. Keep the sealing area clean and avoid blocking the gas path.
  4. Validate the filled package for liquid compatibility, leakage and pressure balancing.
04 / TECHNICAL SUPPORT

Questions before you specify?

How do I choose a vent?+

Start with the mounting interface, enclosure volume, temperature, exposure and target airflow. Evaluate the chosen configuration in the complete assembly.

What determines airflow?+

Membrane structure, exposed area and pressure differential all affect flow. Compare data only when units and test conditions are aligned.

Does an IP rating apply to my finished product?+

A component result does not establish the rating of the complete enclosure. Seals, mounting and other openings must be tested as part of the final assembly.

Can a vent eliminate condensation?+

Venting can support pressure and moisture exchange. Condensation also depends on temperature, humidity, enclosure geometry and operating conditions.

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