CPET plastic sheet for thermoforming
CPET plastic sheets are designed for packaging applications that require high-temperature processing or heating and are a model of high-performance packaging materials.
- Thickness: 0.18-1.8mm
- Width: 300-1400mm
- Color: White/Black
- Heat resistance: -40°C to 220°C
- Applications: Thermoformed packaging boxes, microwave heating food trays, airline tableware, frozen food packaging, etc.
- Delivery time: 7~15 days since receipt of PO and down payment.
- Payment Accepted: D/A, D/P, T/T, L/C, Westunion etc.
- Samples: Free samples supply
CPET (crystalline polyethylene terephthalate) is a polyester material that is crystallized through a special heat treatment. CPET plastic sheets are generally opaque, and common colors are black or white. Compared with traditional PET sheets, CPET’s high temperature resistance is significantly improved. CPET plastic sheets are used in thermoformed packaging boxes, often used as microwave oven lunch boxes or aviation lunch boxes.
CPET plastic sheet parameters
| Parameter | Value range/description |
| Thickness | 0.18mm – 1.8mm |
| Density | 1.35 g/cm³ – 1.45 g/cm³ |
| Heat resistance | -40°C to 220°C |
| Crystallinity | High crystallinity (improves heat resistance and dimensional stability) |
| Transparency | Translucent to opaque |
| Barrier properties | Good gas and water vapor barrier |
| Mechanical strength | High tensile and impact resistance |
| Food safety certification | Meets food contact safety standards such as FDA and EU |
| Chemical stability | Resistant to grease, acid, alkali and alcohol corrosion |
| Recyclability | Fully recyclable, environmentally friendly |
| Applications | Thermoformed packaging boxes: microwave heating food trays, airline tableware, frozen food packaging, etc. |
| Company Profile | 5 PET co-extruded production line & 2 PET coating production line. Production Capacity: 2,000MT/month. First-class R&D team, 30+ patents, CE, ISO 900, ROSH, GRS certificate. 40+ agents China, 100% return or original compensation Guarantee. |
Physical and chemical properties of CPET sheets
Physical properties
High temperature resistance
CPET can be used in the range of -40°C to 220°C and can not only withstand freezing environments, but is also suitable for direct heating in microwaves and ovens.
High strength and rigidity
It exhibits excellent compression and impact resistance, especially maintaining excellent mechanical properties at freezing temperatures.
Dimensional stability
During the thermoforming process, the sheet expands and deforms minimally due to heat, making it suitable for high-precision molding.
Chemical properties
Excellent barrier properties
Blocks oxygen, water vapor and grease, which can effectively extend the shelf life of food.
Chemical resistance
It has good tolerance to various chemical substances such as acids, alkalis, and greases.
Non-toxic and environmentally friendly
It complies with food-grade safety standards and can be recycled to reduce environmental pollution.
Characteristics and advantages of CPET sheets
High temperature resistance: It does not deform or release harmful substances in high temperature environments, making it an ideal choice for oven-heated and microwave-heated food packaging.
High mechanical properties: Maintain stable strength and rigidity in freezing and high temperature environments.
Food-grade safety: passed FDA and EU standard testing to ensure the safety of food packaging.
Environmental protection: supports recycling and reuse, can reduce carbon emissions and meet increasingly stringent environmental protection requirements.
Comparison between CPET and ordinary PET sheets
| Properties | CPET sheet | Ordinary PET sheet |
| Transparency | Opaque, milky white | Highly transparent, suitable for visual display |
| High temperature resistance | Up to 200°C | About 60-70°C, not suitable for high temperatures |
| Applications | Microwave lunch boxes, ready-to-eat food trays, etc. | General refrigerated or room temperature food packaging |
| Flexibility | More rigid | Softer for multipurpose molding |
| Cost | Slightly higher | Lower, suitable for general applications |
Typical application fields of CPET plastic sheet
Food industry
Microwave lunch box, oven tray: high temperature resistant and non-toxic, suitable for direct heating.
Ready-to-eat food packaging: Strong barrier properties extend the shelf life of food and facilitate cold chain transportation.
Medical field
High temperature sterilization medical device tray: resistant to high temperature sterilization and no chemical migration.
Industrial packaging
Precision equipment pallets or high-temperature packaging of chemicals.
PET sheet type we offer
| PET sheet type | Width (mm) | Thickness (mm) | Color | Resistance value (Ω) |
| Silicon-coated PET | 300-1400 | 0.18-2.0 | Transparent/Others | / |
| RPET sheet | Transparent/Others | / | ||
| GAG sheet | Transparent/Others | / | ||
| Anti-fog PET | Transparent/Others | / | ||
| High impact PET | Transparent/Others | / | ||
| PET lamination PE | Transparent/Others | / | ||
| PET sheet for electronic | ||||
| Conductive PET | 300-1400 | 0.18-2.0 | Transparent/Others | 104-106 |
| Semi-conductive PET | Transparent/Others | 106-109 | ||
| Anti-stactic PET | Transparent/Others | 109-1011 | ||
| Coated PET | Transparent/Others | 103-106 | ||
Production process of CPET sheet
The production process of CPET plastic sheets mainly includes the following steps:
- Raw material preparation: High-purity PET resin is used, combined with nucleating agents and additives to enhance the crystallization properties of the material.
- Extrusion process: PET resin is melted through an extruder to form a continuous and uniform melt.
- Crystallization treatment: During the cooling process, precise temperature control is used to promote the crystallization of PET molecular chains, giving the material high-temperature resistance.
- Calendering: Calender the molten material into sheets, and adjust the thickness to 0.18-1.8mm.
- Heat treatment stabilization: Heat treatment is performed within a specific temperature range to optimize the mechanical strength and dimensional stability of the material.
- Surface treatment: Coatings can be added to enhance barrier properties or scratch resistance to meet different application needs.
- Cutting and packaging: Cut sheets according to customer specifications and package them in rolls or flat sheets.
Process features:
- Use advanced temperature control technology to ensure uniform crystallization;
- Precise thickness control meets different applications;
- Surface treatment processes expand functional applications.
Development history and market prospects
Development history:
CPET originated in the 1970s and was originally used for ready-to-eat food packaging. As the demand for high-temperature applications grows, it gradually expands to pharmaceutical, industrial packaging and other fields.
Market prospects:
Against the backdrop of continued growth in global demand for high-performance, environmentally friendly packaging materials, CPET has huge market potential. In particular, environmental regulations and increasing consumer demand for sustainable materials have made CPET a popular choice in the high-end packaging market.
Why choose DESU plastic sheet?
DESU PET sheet roll factory
DESU is an excellent plastic sheet manufacturer in China, mainly developing and producing PET, HIPS, PP and other plastic sheets. The company has 12 co-extrusion production lines imported from Europe, 4 PET coating production lines, a completely dust-free production workshop and is equipped with the most advanced raw material air conveying/drying system and PLC intelligent control system. Our annual output exceeds 40,000 tons, and customers from more than 30 countries around the world have chosen us.
Cooperative partner
DESU PET sheet rolls are exported to many countries around the world. Our market is oriented to Southeast Asia, the Middle East, Europe, South America, North America, Africa, Central Asia, South Asia, etc.
Customers in more than 30 countries have chosen us. Thanks to advanced production equipment and strong productivity, we are able to deliver on time while ensuring quality.
We keep good quality and competitive price to ensure our customers benefit.
Certificate
DESU has passed many international certification standards such as ISO-9001, ISO-14001, GRS, SGS, ROHS, QS etc.
Purchase Notice
| Packing way | Packed in roll or flat sheet,50-150kg/roll or according to specific requests from clients. |
| Packing material | Inner PE film+ outer Woven plastic bags as standard, palletized for extra reinforcement if necessary. |
| Shipping marks | Neutral packing with printed marks. |
| Delivery time | 7~15 days since receipt of PO and down payment. |
| Freight | Sea(FCL & LCL) or air freight. |
| Special size | We provide cutting services for special sizes. |
| Payment Accepted | D/A, D/P, T/T, L/C, Westunion etc. |
