BOPP film (bi-oriented polypropylene film) and PET film (polyester film) are both commonly used plastic film materials, but there are a number of differences in their performance, application and price.
Performance Comparison
| Performance | BOPP | PET |
| Transparency | High | High |
| Rigidity | Stronger | Higher |
| Strength | High | High |
| Toughness | Poor | Better |
| Heat resistance | Poor | Better |
| Cold resistance | Good | Poor |
| Weather resistance | Poor | Better |
| Chemical stability | Better | Better |
| Printability | Better | Better |
| Restorability | Poor | Better |
| Environmental friendliness | Good | Poor |
The advantages of BOPP film are high transparency, high strength, good cold resistance, biodegradable and cheap.
The advantages of PET film are high gloss, high rigidity, high strength, good toughness, good heat resistance, good weather resistance, good recoverability.
Application Comparison
| Application | BOPP film | PET film |
| Food packaging | √ | √ |
| Pharmaceutical packaging | √ | √ |
| Electronic product packaging | √ | √ |
| Tag | √ | √ |
| Tape | √ | √ |
| Textile | √ | √ |
| Others | V | √ |
Price Comparison
Overall, BOPP films are less expensive than PET films.
Conclusion
To summarize, although both BOPP and PET films are excellent packaging materials, there are some differences between them in terms of physical properties, thermal properties, transparency and application areas. When choosing materials, you can consider these factors comprehensively according to the actual needs and product characteristics to ensure that the most suitable material is selected.