VAC-VBS is based on the differential pressure method, and is professionally applicable to the determination of gas transmission rate of films, sheeting, high barrier materials and aluminum foils.
Product Features
- The GTRs of various films for distinct gases are testable
- Tests 3 equivalent specimens at one operation and exports test results in average value
- Equipped with temperature control device (optional parts) to meet various test conditions
- The instrument comes with two test modes: proportional mode and standard mode
- The system is controlled by computer and test process is automatic
- Reference film for fast calibration to ensure accurate and universal test data
- Equipped with RS232 port for convenient data transfer
- Supports LystemTM Lab Data Sharing System for uniform management of test results and test reports
Principle
The pre-conditioned specimen is mounted in the gas diffusion cell as to form a sealed barrier between two chambers. The lower-pressure chamber is firstly evacuated, followed by the evacuation of the entire cell. A flow of gas is thereafter introduced into the evacuated higher-pressure chamber and a constant pressure difference is generated between two chambers. The gas permeates through the specimen from the higher pressure side into the lower side. The gas permeability and other barrier properties of the specimen can be obtained by monitoring the pressure changes in the lower chamber.
Standards
This test instrument conforms to the following standards:
ISO 15105-1, ISO 2556, GB/T 1038-2000, ASTM D1434, JIS K7126-1, YBB 00082003
Applications
This test instrument is applicable to the determination of gas permeability of:
| Basic Applications |
Films
Including plastic films, plastic composite films, paper-plastic composite films, coextruded films, aluminized films, aluminum foils, aluminum foil composite films and many others |
Sheeting
Including engineering plastics, rubber and building materials, e.g. PP, PVC, and PVDC |
| Extended Applications |
Various Gases
Test the permeability of various types of gases, e.g. O2, CO2, N2, Air and He |
Inflammable, Explosive Gases
Test the permeability of inflammable and explosive gases |
Biodegradable Films
Test gas permeability of various sorts of biodegradable films, e.g. starch-based biodegradable bags |
Materials for Aerospace Usage
This instrument can test the Helium permeability of airship gas bags |
Paper and Paper Board
Test gas permeability of paper and paper-plastic composite materials, e.g. aluminized paper for cigarette packages, Tetra Pak sheeting, paper bowls for instant noodles and disposable paper cups |
Paint Films
Test gas permeability of substrates coated paint films |
Glass Fiber Cloth and Paper
Including glass fiber cloth and paper materials, e.g. Teflon paint cloth, Teflon welding cloth and Teflon silicon rubber cloth |
Soft Tube Materials for Cosmetics
Including various types of cosmetic tubes, aluminum-plastic tubes and toothpaste tubes |
Rubber Sheeting
Including various sorts of rubber sheeting, e.g. car tires |
Technical Specifications
| Specifications | Film Test |
| Test Range | 0.1~100,000 cm3/m2·24h·0.1MPa (standard) |
| Number of Specimens | 3 |
| Vacuum Resolution | 0.1 Pa |
| Vacuum Degree of Test Chamber | <20 Pa |
| Test Temperature | 15°C~55°C (constant temperature controller is optional) |
| Accuracy | ±0.1°C |
| Specimen Size | Φ80 mm |
| Test Area | 28.27 cm2 |
| Test Gas | O2, N2 and CO2 (outside of supply scope) |
| Test Pressure | -0.1 MPa ~ +0.1 MPa (standard) |
| Gas Supply Pressure | 0.4 MPa ~ 0.6 MPa |
| Port Size | Φ6 mm PU Tubing |
| Instrument Dimension | 670 mm (L) x 490 mm (W) x 350 mm (H) |
| Power Supply | 220VAC 50Hz / 120VAC 60Hz |
| Net Weight | 57 kg |
Configurations
- Standard Configurations
- Instrument, Professional Software, Round Sample Cutter, Vacuum Grease, Fast Quantitative Filter Paper and Vacuum Pump
- Optional Parts
- Constant Temperature Control Device, Blades for Sample Cutter, Vacuum Grease and Fast Quantitative Filter Paper
- Note
- 1. The gas supply port of the instrument is Φ6 mm PU tubing;
2. Customers will need to prepare for gas supply.
Contact Us! We can help you select or customize the proper unit for your test requirements.
