Typical Properties of Barriers Used in Multiwall
and Consumer Bags (cont.)
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Barrier
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WVTR (a)
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02TR (b)
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Odor Barrier
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Grease Barrier
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Heat Sealable
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Saran Grades (Coated and Coextruded) Polypropylene (Saran Coated) |
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0.70 MIL C1S |
0.50
|
3-5
|
Excellent
|
Excellent
|
Yes
|
0.75 MIL C2S |
0.45
|
3-5
|
Excellent
|
Excellent
|
Yes
|
1.00 C2S |
0.30
|
1-3
|
Excellent
|
Excellent
|
Yes
|
Saranex (PE/Saran/PE) |
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Saranex 5 (1.25 MIL) |
0.50
|
2.0
|
Good
|
Excellent
|
Yes
|
Saranex 10 (1.5 MIL) |
0.40
|
1.5
|
Good
|
Excellent
|
Yes
|
Saranex 14 (2.0 MIL) |
0.20
|
0.50
|
Excellent
|
Excellent
|
Yes
|
Saranex 15 (3.0 MIL) |
0.15
|
0.30
|
Excellent
|
Excellent
|
Yes
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Specialty Grades Nylon (Mono or Biaxially Oriented) |
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0.48 MIL |
2.40
|
2.7
|
Fair
|
Fair
|
No
|
0.60 MIL Saran Coated |
0.70
|
0.5
|
Excellent
|
Excellent
|
Yes
|
Polyester Film (Mylar) |
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0.48 MIL |
2.8
|
9.0
|
Good
|
Excellent
|
No
|
0.75 MIL |
1.9
|
7.0
|
Good
|
Excellent
|
No
|
0.92 MIL |
1.3
|
5.0
|
Good
|
Excellent
|
No
|
Metallized Film |
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0.5 MIL Mylar (DuPont 50 MMC) |
0.04
|
0.01
|
Excellent
|
Excellent
|
Yes
|
0.8 MIL Polypropylene (Normet 380) |
0.07
|
4.00
|
Good
|
Good
|
Yes
|
1.0 NIL Nylon |
0.50
|
0.07
|
Good
|
Good
|
No
|
Valeron |
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2.5 MIL |
0.25
|
90
|
Fair
|
Good
|
No
|
4.0 MIL |
0.15
|
60
|
Fair
|
Good
|
No
|
Cellophane (Saran Coated) |
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1.0 MIL |
0.50
|
0.8
|
Excellent
|
Good
|
Yes
|
Glassine |
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57# Wax Laminated |
1.0-2.5
|
2-5
|
Good
|
Excellent
|
No
|
(a) Water Vapor Tranmission Rate in g/100 in2/24 hours (ASTM E-96) (b) Oxygen Gas Transmission Rate in cc/100 in2/24 hours/atms (ASTM D-1434) Source: Smurfit-Stone Bag Packaging Division
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