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1, When packing dry materials (foods).
| 1) |
SiOx layer must face outer. |
| 2) |
Laminating a plastic film on SiOx layer in order to protect. The appropriate films are OPP, OPET. The higher humid barrier material, the better. |
| 3) |
Don't laminate OPA film on SiOx layer because the barrier property would be deteriorated when it exposed humid atmosphere. |
| 4) |
Recommendable structures are as follows.
OPP / SiOx-TECHBARRIER -S / Sealant / (inside, dry material)
OPET / SiOx-TECHBARRIER-S / Sealant / (inside, dry material) |
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| 3, |
Please find Table 1 and 2 that show the effect of structure on gas barrier property. |
Table 1 : Effect of Lamination Structure on Gas Barrier Property.
| Item |
Structure |
OPET(12 m)/SiOx- TECHBARRIER-S/CPP(50m) |
OPP(20m)/SiOx- TECHBARRIER-S/CPP(40m) |
Oxygen Transmission Rate
{cc/(m2 datm)}
25 , 80%RH |
0.1 |
< 0.1 |
Water Vapor Transmission Rate
{g/(m2d)}
40, 90%RH |
0.2 |
0.1 |
Notes: 90%RH atmosphere by OPP or OPET side when measured.
Table 2 : Effect of SiOx face on Gas Barrier Property.
| Item |
Structure |
| OPP(20m)/SiOx- TECHBARRIER-S/CPP(40m) |
Oxygen Transmission Rate
(cc/(m2datm)
25, 80%RH |
< 0.1 |
Water Vapor Transmission Rate
{g/(m2d)}
40, 90%RH |
40, 90%RH
outside |
0.1 |
40, 90%RH
inside |
0.4 |
The above data is NOT guaranteed.
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