Biodegradable barrier package materials
Nichigo G-Polymer™ as a Biodegradable Barrier Packaging Material
Fully biodegradable barrier package materials can be designed by using Nichigo G-Polymer™ as an intermediate barrier layer and combining it with biodegradable resins such as polylactic acid (PLA) and polybutylene succinate (PBS) and a biodegradable bonding resin developed by Mitsubishi Chemical.
Nichigo G-Polymer™ is used as an intermediate layer (barrier layer) for biodegradable barrier packaging materials, as shown in the photo below.
Recommended grades when using Nichigo G-Polymer™ as a material for biodegradable gas barrier packaging
The table below lists recommended grades and corresponding products, MFR, and OTR for using Nichigo G-Polymer™ as a material for biodegradable gas barrier packaging. The corresponding product and MFR of biodegradable bonding resins are also listed. All grades are recommended for food package applications.
| Type | Grades | MFR 1) | OTR 2) |
| Standard | BVE8049P | 4.3 | 0.4 |
| High MFR | AVE8077P | 30 | 0.4 |
| Flexibility | OKS-8074P | 3.5 | 0.5 |
| Biodegradable tie resin | G-Connect™ BTR8002P | ≦5 | – |
1): 2,160 gf, 210°C
2): 23°C, 65%RH
OKS: product under development
The numbers above are sample values, and are not guaranteed.
Biodegradability of Nichigo G-Polymer™
Nichigo G-Polymer™ BVE8049P, AVE8077P, OKS-8074P, and biodegradable bonding resin G-Connect™ BTR8002P have acquired the EU biodegradability certification of “OK compost” and US biodegradability certification.
Oxygen permeability of multilayer containers
The table below lists the oxygen permeability of Nichigo G-Polymer™ when used as a material for multilayer containers.
| Layer (µm) | OTR(cc/tray day air)23℃, inner 85%RH, outer 50%RH |
| PLA/G-Connect™ BTR8002P/ Nichigo G-Polymer™ BVE8049P/ G-Connect™ BTR8002P/PLA93/9/9/9/93 | 0.001 |