Foam liner (for waterproof ventilation gaskets)

●Product Introduction

Generally, when a sealed container contains volatile solvents such as chemicals or detergents, the volume expands or contracts due to changes in temperature and pressure, creating the risk of leakage or explosion.
The risk of liquid leakage or explosion is caused by the expansion and contraction of the container due to changes in temperature and pressure. The polytetrafluoroethylene (PTFE) membrane used in this product (PTFE/PE foam liner) has excellent breathability, water resistance, and dust resistance, and when combined with a polyethylene gasket, it becomes a strong waterproof and breathable gasket that can be used in a variety of containers and packaging bags. In addition, it can be directly welded to the bottle, and when combined with a cap, it makes operation and handling easier.

*Examples of gasket appearances and shapes are shown below.


●Specifications

standard
ePTFE/PE
Highly breathable
ePTFE/PE
Highly breathable
ePTFE/PE/ePTFE
Membrane material
One side ePTFE
One side ePTFE
Double-sided ePTFE
Support Material
PE
PE
PE
Thickness
1.1mm
1.1mm, 1.5mm
1.1mm, 1.5mm
Water pressure resistance
>0.5bar
>0.3bar
>0.3bar
Initial airflow (at differential pressure = 12 mbar)
*Before contact with liquid
>6 L/hr/cm2
>16 L/hr/cm2
>16 L/hr/cm2

●Cross-sectional view (top: single-sided ePTFE, bottom: double-sided ePTFE)

*Before being processed into gaskets, the materials are wound as shown below.
If you would like us to supply the rolled material, please contact us separately.
At that time, we will ask you about your specific needs and requirements.


ePTFE / PE / ePTFE Foam Liner (3-layer highly breathable type)

ePTFE / PE / ePTFE Foam Liner (3-layer highly breathable type)

ePTFE / PE Foam Liner (2-layer highly breathable type)

ePTFE / PE Foam Liner (2-layer highly breathable type)

ePTFE / PE Foam Liner (2-layer standard type)

ePTFE / PE Foam Liner (2-layer standard type)