CPET sheet for vacuum forming

Features and advantages of CPET sheet

High temperature resistance: Safe to use in microwave ovens and ovens.

High mechanical properties: High hardness, strong pressure resistance, suitable for load-bearing packaging.

Sanitary: Meets FDA and EU food grade standards.

Barrier properties: Resistant to water vapor and oxygen penetration, extending the shelf life of food.

Physical properties

Crystallization characteristics: CPET is a crystalline polyester, which is hard and has high rigidity.
Heat resistance: High temperature resistance up to 200°C, suitable for use in high temperature environment.
Impact resistance: Maintains good strength at low temperature, suitable for frozen storage.
Dimensional stability: Minimal deformation when heated, suitable for precision molding.

Chemical properties

Chemical stability: Acid and alkali resistant, grease resistant, suitable for contact with food.
Non-toxic: Meets food grade standards, no migration of harmful substances.
Recycling performance: Recyclable, meets environmental protection requirements, but the process is complicated.

Application of CPET sheet

Food packaging: ready-to-eat food trays, microwave lunch boxes.
Pharmaceutical industry: high temperature sterilization medical device trays.
Industrial packaging: high temperature chemical product packaging.

Difference from ordinary PET sheet

Production process

Raw material drying: ensure low moisture content to avoid molding defects.
Extrusion process: form sheets through high-temperature extrusion.
Biaxial stretching: improve dimensional stability and mechanical properties.
Heat treatment: crystallization to enhance heat resistance.
Surface treatment: add anti-scratch layer or barrier coating as required.

CPET sheet has important value in food, medicine, industry and other fields due to its unique high temperature resistance and excellent mechanical properties. Compared with ordinary PET sheet, CPET is more suitable for high-performance and high-demand applications and is the core material for future high-end packaging solutions.