by Dawn Group

PET VS. PETG Plastic: Understanding the Key Differences in Properties and Applications

PET VS. PETG Plastic

In the plastics industry, PET and PETG are two prominent materials with different properties and applications. Understanding their differences is crucial to choosing the right material for your business.

1. Key Differences in Properties

1.1 Chemical Structure

Property PET PETG
Chemical Composition Terephthalic acid + Ethylene glycol Terephthalic acid + Ethylene glycol + Glycol modification

1.2 Durability and Strength

Property PET PETG
Tensile Strength High High
Impact Resistance Moderate Superior
Flexibility Brittle Flexible

1.3 Flexibility and Processing

Processing Aspect PET PETG
Ease of Processing More Challenging Easier
Thermoforming Limited Excellent

1.4 Transparency and Appearance

Aspect PET PETG
Clarity Excellent Excellent
Finish Matte Glossy

2. Application Differences

Application Area PET PETG
Packaging Bottles, food packaging Complex containers
Medical Disposable devices Sterilizable packaging
3D Printing Less common Very popular
Consumer Goods General use Eyewear, electronics

3. Cost and Availability

  • Due to its widespread production, PET is generally cheaper.
  • PETG has a higher cost due to its modification properties and processing advantages.
  • While PET is cheaper, PETG lasts longer in some applications, saving costs in the long run.

4. Conclusion

To sum up, PET is suitable for traditional packaging and applications, while PET is more suitable for applications that require durability, processability and aesthetics.

Choosing between PET and PETG depends on your specific application needs, budget and environmental considerations.

5. PETG Supplier

Shandong Dawn Helf New Materials Co., Ltd. is committed to the R&D, production and sales of copolyester PETG & PCTG Plastic.

We have 30+ years of experience in the chemicals and plastics trading industry. Our PETG Plastic has been exported to many countries and has received praise from many customers. We can also provide customized services according to your project needs.

Click here to learn more about PETG Plastic: PETG Plastic