What is the difference between CPET plastic sheet (crystalline PET) and PET plastic sheet?

Material structure:
PET: Amorphous or semi-crystalline; mainly used for thermoformed transparent packaging.
CPET: Fully crystalline, with higher heat resistance.

High temperature resistance:
PET: Can withstand moderate heat; not suitable for direct high temperature use.
CPET: Suitable for temperatures up to 200°C, used in heat-resistant trays.

Applications:
PET: Transparent packaging for food, electronics and general items.
CPET: Heat-resistant food trays, often used for ready-to-eat foods.

Flexibility:
PET: More flexible, suitable for lightweight packaging.
CPET: Hard and strong, durable.

Recyclability:
Both are recyclable, but due to structural differences, they need to be processed separately.
CPET is specifically used for heat-resistant packaging, while PET is suitable for standard packaging needs.

How to Choose:

Temperature Requirements: Use CPET for high-heat applications, PET for general purposes.

Transparency Needs: PET is better for clear packaging; CPET is opaque.

Cost Consideration: PET is generally more economical for everyday use.

Application Durability: CPET offers greater rigidity for robust packaging.