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Barrier Properties
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PROPERTIES |
LDPE |
HDPE |
PVC |
PS |
PC |
PP |
OPP |
OPET |
EPET |
PETG |
PEN |
GLASS |
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DENSITY |
0.92 |
0.96 |
1.32 |
1.05 |
1.20 |
0.91 |
0.91 |
1.36 |
1.33 |
1.27 |
1.35 |
2.23 |
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GAS TRANS. |
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O2 |
300 |
185 |
17 |
330 |
234 |
135 |
68 |
4.4 |
12 |
24 |
0.8 |
0 |
|
CO2 |
2700 |
580 |
27 |
1160 |
925 |
390 |
195 |
31 |
77 |
105 |
6 |
0 |
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WATER VAPOR |
1.3 |
0.3 |
3.0 |
8.5 |
10 |
0.3 |
0.3 |
1.85 |
4 |
4.5 |
0.52 |
0 |
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HOT FILL TEMP. |
220 |
250 |
160 |
220 |
280 |
260 |
260 |
140 |
160 |
160 |
248 |
x |
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CLARITY |
P |
P |
G |
E |
E |
P |
G/E |
E |
E |
G/E |
E |
E |
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DROP IMPACT |
F/G |
F/G |
G |
F |
F |
F |
F |
E |
F/G |
F |
E |
P |
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CHEMICAL RES. |
F/G |
F/G |
F/G |
F/G |
F |
F/G |
F/G |
E |
G |
F |
E |
E |
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PROCESS |
I/E |
I/E |
I/E/S |
I |
I/E |
I/E |
S |
S |
E |
E |
S |
x |
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RECYCLE CODE |
4 |
2 |
3 |
6 |
7 |
5 |
5 |
1 |
1 |
1 |
(1?) |
x |
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DENSITY: G/CC
O2 BARRIERE (oxygen) CC-MIL/100 SQ IN. - 24 HR (lower = better)
CO2 BARRIERE (carbon dioxide) CC-MIL/100 SQ IN. - 24 HR (lower = better)
GM-MIL/100 SQ IN. - 24 HR (lower = better)
HOT FILL TEMPERATURE: DEGREES FAHRENHEIT
PROCESS: I = IBM / E = EBM / S = SBM
RATINGS: P = POOR / F = FAIR / G = GOOD / E = EXCELLENT
DISCLAIMER: This matrix may only be used as an indication of how different materials relate to each other. Testing and manufacturing conditions can influence the properties of the materials and bottles. Most numbers mentioned in the matrix are under ideal circumstances. Preform design, mold and machine maintenance, resin drying time and different variations of resin can vary the properties drastically.
Matrix compiled under the authority of PET Power on 26th January 1996
Sources used: PET Partners Europe, Shell Chemical Company, Polytechnical Handbook, Chemical Engineer’s Handbook, Polymer Handbook, Sterile Packaging, Advances in Polymer Technology, Modern Plastics Encylopedia
