Definition
Polyester film with high dimensional stability and excellent printability, commonly used as a durable outer layer.
Applications
- Reverse-printed laminates
- High-gloss pouches
- Lidding films
Benefits
- Improves stiffness
- Resists stretching on press
- Supports high-quality graphics
Industry Examples
- Medical: PET lidding/overwrap films for device trays requiring stability.
- Industrial: PET outer layers for scuff resistance on heavy-duty packs.
- Electronics: provides dimensional stability and durability in printed outer layers of ESD packaging.
FAQ
Q: Why is PET used as an outer web?
A: It holds registration and provides durable, high-quality printing.
Q: Can PET be heat sealed?
A: Not typically without a sealant coating or lamination to a sealant layer.