Barrier Properties of Flexible Packaging Materials

Compare most commonly used, unconverted barrier materials in a table.

BARRIER PROPERTIES
OF FLEXIBLE PACKAGING MATERIALS
Category Material Trade Name Thickness
(mil)
MVTR
(g/100in2•day)
O2TR
(cc/100in2•day)
Thermoformable
Films oPET 1 1.5 4.5 No
Oriented Nylon 1 26.5 3 No
Cast Nylon 1 19 3.5 Yes
CPP Homopolymer 1 1 150 Yes
CPP Copolymer 1 1.3 180 Yes
OPP 1 0.33 150 No
LDPE 1 0.9 NA Yes
HDPE 1 0.37 NA Yes
PVC 1 2.3 11 Yes
Barrier Films Polyacrylonitrile Barex 1 4.5 0.7 Yes
EVOH 1 1.4 – 8.0 0.006 – 0.12 Yes
CoC Topas 8007 1 0.21 NA Yes
Copolymer PCTFE Aclar 22A 1 0.038 15 Yes
Homopolymer PCTFE Alcar UltRx/SupRx 1 0.016 7 Yes
mdo PCTFE Aclar Flex 1 0.01 NA No
Barrier Coatings PVdC-coated PET * 0.5 0.5 No
PVdC-coated OPP * 0.3 1.3 No
PVdC-coated Nylon * 0.6 0.5 No
PVOH-coated PET * 4 0.2 No
PVOH-acrylic-coated PET * 0.37 0.02 No
SiOx-coated PET ClearFoil A * 0.04 0.04 No
SiOx-coated PET ClearFoil F * 0.02 <0.003 No
Al2O3-coated PET ClearFoil V2 * 0.03 0.01 No
Al2O3-coated PET ClearFoil V * 0.02 0.05 No
SiOx-coated PET ClearFoil W3 * 0.004 0.007 No
Al2O3-coated PET ClearFoil M * 0.02 0.02 No
Al2O3-coated PET ClearFoil X * 0.003 0.004 No
Al2O3-coated PET ClearFoil Z * 0.0008 0.0008 No
Metallized PET * 0.05 0.1 No
Foil Aluminum Foil (flat) 0.35 0.002 0.001 No
Aluminum Foil (flat) 0.5 0.001 0.001 No
Aluminum Foil (flat) 1 <0.000 <0.000 Yes

*The barrier for these materials is due to the coating and is not dependent upon substrate thickness.

**Dependent upon the composite construction.

Values are typical data based upon Rollprint testing or manufacturer’s literature and are not intended for use as limiting specifications.