
HIGH TEMPERATURE MOLDING WITH HIGH GRADE RESINS

ISO 13485, ISO 9001:2015, AC8160, ISO 14001:2015
What is High Temperature plastic injection molding?
High-temperature plastic injection molding is a specialized process used to shape heat-resistant polymers into precise parts. These polymers are ideal for extreme environments, where standard plastics would fail. The materials molded using this process offer enhanced thermal, chemical, and mechanical properties that ensure durability and performance.

Plastic injection molding techniques
tHE benefits of hIGH-tEMPERATURE INJECTION mOLDING
High-temperature plastic resins offer a range of advantages that make them ideal for critical components in industries such as aerospace, automotive, medical, and electronics.
Key Benefits of High-Temperature Resins:
- Superior mechanical strength and durability
- High chemical resistance for use in harsh environments
- Dimensional stability across temperature ranges
- Excellent electrical insulation properties
- Low flame and smoke toxicity, reducing the need for additives
At PTI, we work with a wide array of high-temperature resins, available in various colors, to meet the specific needs of your project.
Advanced Equipment for High-Temperature Plastic Injection Molding
Molding high-temperature resins requires specialized equipment designed for processing temperatures up to 850°F. At PTI, we have invested in state-of-the-art systems that maintain precise control over temperature and pressure.
Our equipment features:
- Ceramic heater bands for high-temperature applications
- Thermolators for maintaining consistent mold temperatures
- Unique mold base systems for optimal resin flow and cooling
- Clamping forces ranging from 35 to 150 tons for precision molding
This advanced technology allows us to mold high-temperature plastics while managing thermal expansion and ensuring proper mold cooling to prevent defects like warping or incomplete filling.

Specialized Process for High-Temperature Plastic Injection Molding
The success of high-temperature injection molding depends on precise process control. The equipment must handle the extreme temperatures without affecting the quality of the resin or final product. At PTI, our processes ensure:
- Exact temperature management
- Precise pressure control
- Careful mold cooling to avoid defects
Our dedicated high-heat molding cell operates under the strictest safety standards, ensuring that each product meets your high performance and safety requirements.
Design Considerations for High-Temperature Injection Molding
Designing for high-temperature plastic injection molding is critical for success. Factors such as draft angles, surface finishes, undercuts, and the type of steel used in molds must be considered from the beginning of the project. At PTI, we work closely with engineers to optimize designs for high-heat plastic injection molding to ensure perfect results.
Common high temperature resins
- PEEK (Victrex)
- PPA (Amodel)
- PAI (Torlon)
- PPS (Ryton, Fortron)
- PEI (Ultem)
Contact PTI for Your High-Temperature Plastic Injection Molding Needs
When it comes to high-temperature plastic injection molding, PTI is the trusted partner for engineers looking for precision, reliability, and expertise. Whether you’re developing engine parts, medical implants, or high-performance electrical components, we have the experience and equipment to bring your project to life.
Ready to get started? Contact us today to discuss your project and learn how PTI can deliver superior results with high-temperature plastic injection molding.
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Design For Manufacturing Guide
Made in the USA

Mold Design
Mold Design is a crucial step in the injection molding process. Once you’ve finalized your part in CAD software for fit and function, it must then be transformed into a design for molding to ensure the capture of all the specified details. In some cases, certain features of the part design may not be manufacturable via the injection molding process.
At PTI, we collaborate with you to achieve the best possible design for manufacturability. In fact, we have a FREE guide to help you with this.

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