Gas Barrier Performance

Gas barrier performance of Nichigo G-Polymer™



Despite its low crystallinity, Nichigo G-Polymer™ exhibits higher gas barrier performance than conventional PVOH, owing to its high hydrogen bonding strength.

Nichigo G-Polymer™ has a 30- to 600-fold higher oxygen gas barrier performance under dry conditions compared to ethylene vinyl alcohol (EVOH), which is commonly used as an oxygen gas barrier material.

Sample: solution coating film (single layer film is used for Nylon 6 and polypropylene)
Measurement conditions: 20°C, dry

Nichigo G-Polymer™ demonstrates the highest hydrogen gas barrier performance among thermoplastic resins.

Sample: single layer film
Measurement conditions: dry
Nichigo G-Polymer™, EVOH: 41°C
Nylon resin: room temperature

Nichigo G-Polymer™ demonstrates extremely high carbon dioxide gas barrier performance.

Sample: biaxial stretched film
Measurement conditions: 20°C, dry

The gas barrier performance of Nichigo G-Polymer™ is humidity-dependent.

Samples: PP/tie/Nichigo G-Polymer™ BVE8049P (or EVOH)/tie/PP multilayer film
Measurement conditions: 23°C

Nichigo G-Polymer™: BVE8049Q (extrusion cast film: BVE8049P)
Measurement method: cup method
Sample: 30 μ single layer film