Copolyester is CHDM* based, Glycol Modified PET material. Because it has excellent transparency, durability and chemical resistance, it’s widely used for various applications including cosmetics, packaging, electronics, household, construction and medical. Only two global leading companies produce copolyester resin.
SK has been a faithful world wide copolyester supplier for more than 10 years.
Below are the registered brand names of copolyester resin manufactured by SK Chemicals.
Brand | Type | Grade | Tg | Chemical Resistant | Impact Strength | Application |
 | PET | BR | 79℃ | ● ● ● | ● ● | 5 Gallon Water Container, Household Item |
| | PET | S | 79℃ | ● ● | ● ● | Medical Packaging, Film |
| | PET G | K | 80℃ | ● ● | ● ● | Heavy gauge sheet, Household Item |
 | PET G | PN | 80℃ | ● ● | ● | Packaging (Thin gauge sheet, Bottle) Cosmetics Packaging (Injection molding) |
| | PET G | J | 85℃ | ● ● | ● ● ● | Home Appliances, Household Items, Cosmetics Packaging |
 | Bio-based Copolyester | T | 90~120℃ | ● ● ● | ● ● ● | Food Packaging, Cosmetics Packaging, Home Appliances |
Oxygen Transmission Rate (OTR) and Moisture Vapor Transmission Rate (MVTR) Tested by SK Chemicals R&D
Resin | cc X mil / (100in2 X Day X atm) |
EVOH | 0.02 |
Nylon | 3.5 |
Oriented PET | 6 |
PETG | 11 |
PVC | 9 ~24 |
ECOZEN® T95 | 24 |
ECOZEN® T110 | 26 |
ECOZEN® T120 | 30 |
Competitor 1 | 85 |
Competitor 2 | 100 |
Competitor 3 | 120 |
PS | 220~240 |
PC | 230 |
PE | 170 |
PP | 200 |
Resin | cc X mil / (100 in2 X Day X atm) |
A-PET | 2 |
PETG | 3.28 |
PCTG | 5 |
ABS | 4.14 |
SAN | 5.52 |
Oriented PP | 0.21 |
PS | 3.8 |
PE | 4.4 |
Oxygen Transmission Rate (OTR) and Carbon Dioxide Transmission Rate (CTR) Tested by SK Chemicals R&D
Material | Oxygen | Carbon Dioxide |
Unit | cc X mil / | cm3 X cm / |
ECOZEN | 24 | 20 |
PC | 230 | 53 |
Oriented PET | 6 | 1.75 |
A-PET | 11 | 9 |
S2008 | 25 | 125 |
PCTG | 28 | 125 |
PP | 200 | 86 |
PE | 400~500 | 88 |
PS | 220~240 | 70 |
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