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Manufacturers in food and temperature-sensitive industries face a critical challenge: packaging must endure extreme heat without losing strength, shape, or safety. No matter if products move from freezer to oven, microwave to table, or through high-temperature production lines, packaging failure is not an option. That’s why many manufacturers rely on CPET packaging. This proven solution is designed to withstand demanding thermal conditions while maintaining product integrity.
If your product requires packaging that performs consistently under heat, Munot Plastics is the supplier to trust. We’ve been manufacturing CPET trays since 1963, and we’re ready to partner with your company to deliver packaging solutions engineered for real-world performance.
CPET packaging is made from crystalline polyethylene terephthalate, a specialized form of PET that undergoes a crystallization process during manufacturing. This crystallization allows the new material to withstand temperatures up to approximately 400°F without warping, melting, or compromising structural integrity. This makes it an ideal material for thermoformed trays commonly used for prepared meals, ready-to-eat foods, institutional food service products, and other applications where consistent thermal performance is essential.
Beyond heat resistance, CPET packaging also has other advantages, including its rigidity, durability, and compatibility with automated filling and sealing equipment. Its dimensional stability even helps the packaging maintain its shape throughout processing, transport, and end-use.
When it comes to heat-resistant food packaging, crystalline polyethylene terephthalate stands out as one of the most versatile and dependable materials available.
The primary benefit of CPET trays is their ability to retain their shape under high heat. While other plastics might sag or leech chemicals into the food when heated, CPET maintains a rigid, cool-to-the-touch rim that allows consumers to handle the tray safely even after it has been in a 400-degree oven.
CPET is often referred to as dual-ovenable. This versatility is essential for modern food brands that sell into diverse markets. A single package can serve a customer who prefers the speed of a microwave or a customer who prefers the browning and texture results of a conventional oven.
CPET provides excellent barrier properties against oxygen, moisture, and carbon dioxide. This helps to preserve flavor profiles and ensure that the product remains fresh from the moment it is sealed until it is opened by the end user.
Many heat-resistant materials become brittle when frozen. However, CPET is specifically engineered to remain impact-resistant at freezing temperatures. This makes it ideal for the freezer-to-oven supply chain, where the plastic packaging must survive shipping and handling while frozen without cracking.
At Munot Plastics, we understand that no two products are exactly alike. That’s why we specialize in custom CPET trays designed to meet specific product, processing, and distribution requirements. Our approach combines engineering expertise, material knowledge, and manufacturing precision to deliver trays that perform exactly as intended.
From the earliest design phase, we work closely with customers to understand their operational needs. This includes tray dimensions, compartment layouts, stackability, sealing requirements, and compatibility with existing equipment. Whether you need a shallow tray for single-serve meals or a multi-compartment design for portioned foods, our team ensures that every detail supports performance and efficiency.
Our in-house design and tooling capabilities allow us to then fine-tune tray geometry for optimal strength, heat resistance, and material efficiency. The result is CPET packaging that integrates seamlessly into your workflow while meeting the highest standards for durability and reliability.
Munot Plastics isn’t just a supplier. We’re a packaging partner invested in helping your products succeed in competitive, high-performance markets.
Manufacturers consistently trust us with their CPET plastic packaging needs because of our:
Our integrated approach allows us to maintain strict quality control while remaining flexible and responsive. You can rely on us to adapt quickly, maintain tight tolerances, and deliver dependable results — batch after batch.
When packaging must perform flawlessly under extreme temperatures, choose Munot Plastics for CPET packaging. Our solutions offer the strength, stability, and versatility manufacturers depend on. Connect with our experts today to discover how our heat-resistant food packaging solutions can help your products perform at their best.
