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Hydrophobic Membrane for Venting Caps & Priming Filters - China Supplier & Factory for Medical Applications
Product Introduction
We choose Hydrophobic PTFE membrane which is wide used filter media for medical air vents, closing caps, priming filters. It is a high-end micro porous material which possesses natural hydrophobicity and broad chemical compatibility. Which as part of IV set: closing caps, priming filters with PTFE membrane is a venting device whose main function is covering the distal end of the intravenous (IV) line, which is not attached to a catheter or a needle.
To be an air vent: air elimination is an important feature, it prevents the flow and spillage of the intravenous fluid to the outside environment. But allows the passage of air that has been entrapped in the intravenous line or tubing.
Air flow key performance indicator that should be considered when choosing a venting membrane.
Our biaxially stretched PTFE venting membrane has wide options of substrates of non-woven materials to ensure material compatibility between the membrane and its housing, also guarantee welding integrity.
Working with us, you can expect tailored membrane solutions to satisfy your complicated applications and functional demand. The expanded structure of PTFE itself allows a range of customized options of pore sides to meet various requirements on airflow rate and bacteria or particulate filtration.
Features
- Naturally Hydrophobic and wide Chemical compatibility
- With medical-class PET or PP support
- High air flow (depends on the filtration area and pore size of the membrane)
- Great performance on air elimination
- Excellent mechanical strength
- Anti-bacterial (depends on the pore size of the membrane)
- Good welding strength
Specifications
| Parameter | Specification Details |
|---|---|
| Material | PTFE-PP/PTFE-PET |
| Thickness | Customizable |
| Pore size | 0.22μm/0.45μm/1.2μm |
| WBT | 0.22μm：200Kpa@15min; 0.45μm：150Kpa@15min; 1.2μm：60Kpa@15min |
| Air Flow (mL/cm2/min) | 0.22μm：300; 0.45μm: 700; 1.2μm: 2300 |
| Endotoxin | ＜0.5EU/ml |
Performance
Applications
- Air venting
- Closing caps
- Priming filters
- Gas filtration
- TSP ambient air monitoring
- Bacterial isolation
Closing caps which is also called priming caps are equipped on the infusion set end , have strict requirements for breathability and waterproofness, even bacterial resistance during use. XINNA PTFE membrane with pore size 0.22/0.45/1.2μm perfectly solve these problems, achieving a dual effect of breathability and protection.
This material has long-term durability to meet various working conditions. We can provide rolls ,sheets or discs.
Warning & Handling Instructions
- Handle with care to avoid damaging the filter material.
- Sterilization by irradiation is not available
- Do not use glue or cyclohexanone for adhesion as it can clog the material itself, preventing gas from passing through.
- Avoid contact with alcohol or high-permeability solvents, otherwise, the material will become hydrophilic before it is fully dried.
Ordering Information
| Material | Pore Size (μm) | Thickness (μm) | Format / Size |
|---|---|---|---|
| PTFEs | 0.22 | 120 | Roll |
| 0.45 | 150 | Sheet | |
| 1.20 | 200 | Customizable | |
| Customizable | Customizable | Customizable |
Frequently Asked Questions (FAQ)
Q
What are the main applications of the hydrophobic PTFE venting membrane?
The hydrophobic PTFE venting membrane is widely used for medical air vents, closing caps (priming caps), priming filters, gas filtration, TSP ambient air monitoring, and bacterial isolation.
Q
What pore sizes and thicknesses are available for ordering?
We offer standard pore sizes of 0.22μm, 0.45μm, and 1.2μm, with standard thicknesses of 120μm, 150μm, and 200μm. Custom sizes, thicknesses, and pore sizes can also be tailored to meet your specific requirements.
Q
Can this medical PTFE membrane be sterilized using irradiation?
No, sterilization by irradiation is not available for this PTFE membrane. Alternative sterilization methods compatible with PTFE should be utilized.
Q
Why should we avoid using glue or cyclohexanone for adhesion?
Glue or cyclohexanone can clog the microporous structure of the PTFE material itself, which blocks the passage of gas and compromises the venting performance.
Q
What happens if the PTFE membrane contacts alcohol or high-permeability solvents?
Contact with alcohol or high-permeability solvents will temporarily cause the hydrophobic membrane to become hydrophilic before it has completely dried. Care should be taken to avoid such contact during handling.