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.
