Polyethylene terephthalate (PET) is a thermoplastic polymer used as film, sheet or fiber in many industrial sectors. Two important variants are R-PET and A-PET:
- R-PETstands for “Recycled PET”, meaning polymer produced from recycled materials.
- A-PETstands for “Amorphous PET”, a transparent, non- crystallized PET with particular optical and mechanical properties.
In short: R-PET stands for sustainability through reuse, A-PET stands for transparency and dimensional stability. Both variants play an important role in packaging, automotive and electrical insulation applications.
A-PET: Amorphous PET
Properties
- High transparency and gloss.
- Good impact resistance.
- High dimensional stability due to the amorphous structure.
- Temperature resistance up to approx. 60 to 70 degC (lower than crystalline PET).
- Recyclable.
Areas of Application
- Packaging for food, electronics and medical technology.
- Viewing covers, displays, blister packaging.
- In the electrical sector: cover films, interlayers with low thermal requirements.
R-PET: Recycled PET
Properties
- Sustainable: contains post-consumer (PCR) or post-industrial (PIR) recyclates.
- Mechanical properties can vary depending on recyclate quality.
- Typically somewhat lower transparency than virgin material.
- Electrical and thermal properties must be verified.
- Temperature range similar to standard PET (up to approx. 120 degC in film form).
Areas of Application
- Films and sheets with documented recycled content.
- Electrical insulation films (HOSTAPHAN R-PET) in defined applications.
- Automotive interior parts (for example covers, carriers).
- Sustainable packaging and technical sheets.
Differences between R-PET and A-PET
R-PET and A-PET differ fundamentally in origin, material properties and typical fields of application. While R-PET focuses on sustainability and resource conservation, A-PET stands out through optical quality and dimensional stability.
| Property | R-PET (Recycled PET) | A-PET (Amorphous PET) |
|---|---|---|
| Origin | Recycled materials (PCR/PIR) | Virgin material |
| Transparency | Lower than virgin material | High, clear gloss |
| Impact resistance | Variable | Good |
| Dimensional stability | Standard | High |
| Temperature resistance | up to approx. 120 degC (film form) | up to approx. 60 to 70 degC |
| Quality consistency | Variable (depending on recyclate) | Consistent |
| Recyclability | Yes | Yes |
| Sustainability | High (reuse) | Low (virgin production) |
| Typical applications | Insulation films, automotive parts | Packaging, displays, covers |
R-PET and A-PET in the Electrical and Automotive Industries
- Electrical insulation industry: R-PET is increasingly used for insulation films, provided that dielectric strength and aging resistance are assured. A-PET plays a subordinate role here because its temperature resistance is limited.
- Automotive industry:
- R-PET: for sustainable components, for example carrier plates, interior parts, covers.
- A-PET: for transparent covers and viewing parts.
- Sustainability and regulation: EU regulations increasingly require a minimum recycled content in plastic products. R-PET is therefore a key material for future supply chains.
Advantages and Challenges
R-PET Advantages
- Sustainability, CO2 reduction.
- Reduced raw material use.
- Compliance with regulatory requirements.
R-PET Challenges
- Quality fluctuations.
- Required evidence and testing for safety-critical applications.
A-PET Advantages
- High transparency.
- Good dimensional stability and impact resistance.
- Recyclable.
A-PET Challenges
- Limited temperature resistance.
- Not suitable for high-performance insulation.
Standards and Norms
- DIN EN 15343: Traceability of recycled plastics.
- ISO 14021: Environmental labeling, definition of recycled content.
- DIN ISO 2768: Dimensional tolerances for manufactured parts.
- IEC 60085: Insulation material classes when PET is used as an electrical insulation material.
GOBA Takeaway
R-PET and A-PET are variants of the same base polymer with different focuses. A-PET stands out through transparency and dimensional stability, R-PET through sustainability and resource efficiency. For the electrical insulation industry, R-PET is particularly interesting because it combines ecological benefits with electrical functionality, provided the quality is stable and verified through testing. For buyers and designers: A-PET for optical applications, R-PET for sustainable film and sheet solutions.