Test principle
The pre-treated sample is clamped between the test chamber, nitrogen with stable relative humidity flows on one side of the film, and dry nitrogen flows on the other side of the film. Due to the existence of humidity difference, water vapor will be diffused from the high wet side through the film to the low wet side. On the low wet side, the water vapor is carried by the flowing dry nitrogen to the electrolytic sensor, and then the water vapor permeability of the sample is obtained. It can also be used to measure the water vapor transmittance of packaging containers.
Reference standard
ISO15106-2, GB/T26253, YBB00092003-2015 and other standards
Test application
application | Thin film | Water vapor transmittance test of various plastic film, plastic composite film, paper plastic composite film, co-extrusion film, aluminum plating film, aluminum foil composite film, glass fiber aluminum foil paper composite film and other membrane materials. |
sheet | Water vapor transmittance test of PP sheet, PVC sheet, PVDC sheet, metal foil sheet, rubber sheet, silicon sheet and other sheet materials. |
Paper composite | Test of water vapor transmittance of paper and board, such as cigarette coated aluminized paper and paper aluminum-plastic composite sheet. |
package | Water vapor permeability test of bottles, Coke bottles, peanut oil drums, Tetra Pak packaging, vacuum packaging bags, three-piece cans, cosmetic packaging, toothpaste hose, medicinal ointment tubes, jelly cups, yogurt cups and other plastic, rubber, paper, paper-plastic composite, glass, metal bottles, bags, cans, boxes, buckets. |
Technical parameter
Test range: 0.005 ~ 40g/(m2·24h) (conventional)
0.01 ~ 1000g/(m2·24h) (expandable)
Sample quantity: 3 pieces (data are independent)
Resolution: 0.001g/(m2·24h)
Test temperature: 15℃ ~ 90℃
Temperature control accuracy: ±0.1℃
Test humidity: 0%RH, 35%RH ~ 90%RH, 100%RH
Humidity control accuracy: ±1%RH
Test area: 50cm2
Sample thickness: ≤3mm
Sample size: 108mm×108mm
Carrier gas: 99.999% high purity nitrogen (air source provided by the user)
Carrier gas flow rate: 0-200mL/min
Interface size: 1/8 inch metal tube
Power supply: 220VAC50Hz
Standard configuration
Equipment host, embedded professional software, communication cable, vacuum grease, sampler, air supply valve fittings, keyboard, mouse, display, precision pressure reducing valve
