CPET sheet

CPET sheet (rapid crystallization PET) is a high-temperature resistant material made by adding a crystallization nucleating agent to PET. The following introduces relevant information from several dimensions: characteristics, applications, production, and appearance. However, image information cannot be directly provided. You can obtain images through professional chemical material websites, industry reports, or relevant product manuals.
Characteristics
Wide temperature resistance range: CPET sheet has excellent high and low-temperature resistance performance, with a wide usable temperature range. It can be used in environments as low as -40℃ and as high as 240℃, meeting the requirements of microwave ovens, ovens, and other high-temperature heating equipment.
Good barrier properties: It has good barrier properties and can effectively block the penetration of oxygen, water vapor, carbon dioxide, etc., helping to extend the shelf life of food and maintain its freshness and taste.
Environmentally friendly and non-toxic: Odorless, tasteless, colorless, and non-toxic, it is one of the world's recognized best food packaging materials. It does not release any harmful substances or gases during heating and meets food packaging safety standards.
Applications
Food packaging: Widely used in the food packaging field, such as airline meals, oven meal boxes, microwave-heating tableware, and oven trays. Its high-temperature resistance and good barrier properties ensure the safety and quality of food during heating and storage.
Other fields: It can also be used in electronics, auto parts, and machinery equipment fields to manufacture connectors, coil winding tubes, switchboard covers, ignition coils, gears, cams, and other components.
Production
Raw materials: Based on PET resin, crystallization nucleating agents and other additives are added and processed through special production processes. The addition of crystallization nucleating agents can accelerate the crystallization speed of PET resin, improve the crystallinity of the sheet, and thus give it good high-temperature resistance.
Process: The production process usually includes polyester chip drying, extrusion, casting, rolling, cooling drum cooling, traction, and winding. During the extrusion process, it is necessary to precisely control parameters such as temperature and pressure to ensure the quality and performance of the sheet.
Appearance
Color: Usually opaque milky white. This is because the macromolecular chains inside are in a crystalline state, and light is scattered inside, causing the sheet to appear opaque.
Form: Generally in sheet form, the thickness can be adjusted according to different application needs. Common thicknesses are around 0.5mm.