Flex crack resistance grades SF series
High stiffness is one of the weak point of Soarnol™ especially application require flex crack resistance. Soarnol™ SF series has far higher flex crack resistance than that of conventional EVOH. After development of this grades, application of Soarnol™ became wider than before.
Relationship between flexural time vs oxygen
Evaluated oxygen transmission rate after flexural test.
In case of conventional EVOH, gas barrier property deteriorated after a few hundred times flexural but SF grade keeps its property even after 500 cycle flexural.
- LL/Tie/EVOH/Tie/LL＝50/5/10/5/50μm Total120μm(multilayer film)
- Flexural condition:
- 440˚ twist in 9.98 cm stroke + 6.35 cm straight stroke
23℃,50%RH,average of N = 3
- OTR measurement conditions:
Bag In Box (BIB), vacuum packaging
- vacuum packaging