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Fuel Barrier Property of "Soarnol®"

Fuel barrier property of "Soarnol®" is shown in the following.

(1)Test Method

Sample

Multilayer pouch	:	Thickness (HDPE/Tie/EVOH/Tie/HDPE)=(80/10/20/10/80)µm
	:	Surface Area 200cm2 for both sides(Dimensions 10cm*10cm)
EVOH	:	Soarnol 25mol%,29mol%,32mol%

Fuel

E10=(Fuel C/EtOH)=(90/10) vol%

M15=(Fuel C/MeOH)=(85/15) vol%

Fuel C=(Toluene/ｉ-Octane)=50/50 vol%

Measurement of Fuel Barrier Property

Hold under 40deg C, Dry Atmosphere

Weigh the pouch after predetermined time

(2)Result

E10 system

EVOH	Fuel Permeability （g·20µ/m2 day）
Soarnol 25mol%	0.081
Soarnol 29mol%	0.201
Soarnol 32mol%	0.302

In case of E10 system consisting of ethanol, low ethylene content "Soarnol®" shows high fuel barrier property.

M15 system

EVOH	Fuel Permeability （g·20µm/m2 day）
Soarnol 25mol%	10.4
Soarnol 29mol%	17.5
Soarnol 32mol%	21.5

In case of M15 system consisting of methanol, low ethylene content "Soarnol®" shows high fuel barrier property as well as E10 system.
However, its barrier level is lower than that of E10 system.

Fuel C system

EVOH	Fuel Permeability （g·20µm/m2 day）
Soarnol 25mol%	0.048
Soarnol 29mol%	0.048
Soarnol 32mol%	0.050

In case of Fuel C system which doesn't contain alcohol, each "Soarnol®" shows high fuel barrier property.
Its barrier level is the best of all three fuel systems.

Data Prepared : 1 Sep. 2003