Gas Permeability Tests of Polymers

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Summary

Gas permeability of various plastic materials for food packages and electronic Products etc. under the specified temperature and humidity condition.

Table 1 Apparatus

Apparatus OX-TRAN
MOCON
PERMATRAN-W MOCON GAS PERMEABILITY
TOYO-SEIKI
OX-TRAN
MOCON
Gas O2 H2O Variou gas
(N2,H2,C2H4 etc)
O2
Method Equal-pressure Equal-pressure Differential-pressure Equal-pressure
Satandard JIS K7126-2
ASTM D3985
ISO 2782-2
JIS K7129
ASTM F1249
ISO 15106-2
JIS K7126-1
ASTM D1434
ISO 2782-1
JIS K7126-2
ASTM D3985
ISO 2782-2
Permeability Range 0.02-2000
(cm3/(m2・24h・atm))
0.01-600
(g/(m2・24h))
1-10,000
(cm3/(m2・24h・atm))
0.001-0.05
(cm3/(pkg・24h))
Temperature 10-40℃ 10-40℃ 10-80℃ 23-55℃
Humidity(RH) 0, 35-90% 35-90%, 100% 0% 50-90%
Sample Film, Sheet
( <1mm )
Film, Sheet
( <1mm )
Film, Sheet
( <2mm )
Bottle(pkg.)
(300-1500ml)

Example

Fig.1 Temperature dependence of O2 permeability of polymers

Table 2 O2 permeability coefficients of polymers ( reduced by biaxial orientation )

Sample O2 CO2 H2O
cm3・mm/
(m2・24h・atm)
cm3・mm/
(m2・24h・atm)
g・mm/
(m2・24h)
PET Non oriented 5.0 15.6 1.38
Biaxially oriented 1.7 5.2 0.65
HDPE Non oriented 85.0 290 0.55
Biaxially oriented 37.8 125 0.25
PP Non oriented 78.9 284 0.76
Biaxially oriented 32.0 110 0.20
PA
(NY6)
Non oriented 1.2 4.8 6.00
Biaxially oriented 0.4 1.6 2.00

Search Number 6H001

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