What is PEEK?

PEEK (Polyetheretherketone) is a high-performance engineering plastic known for its exceptionally high heat resistance, with a continuous service temperature of approximately 260°C, making it one of the top-tier thermoplastic materials. It also exhibits high mechanical strength and rigidity over a wide temperature range, along with excellent creep resistance and wear resistance. Another key characteristic of PEEK is its natural flame retardancy, with an extremely low risk of generating toxic gases.

Challenges in PEEK Injection Molding
High processing temperatures: PEEK requires a cylinder temperature close to 400°C and a mold temperature of approximately 180°C, making it one of the most demanding thermoplastics in terms of processing temperature.
Poor flowability: Due to its low fluidity, PEEK requires high injection pressure, and careful design considerations must be made for gate positioning and gas venting inserts.
Difficult mold release: PEEK has poor mold release properties, which can lead to issues such as parts sticking to the mold or remaining inside the cavity. Therefore, proper draft angles must be incorporated into the product design.
Challenges in molding precision gear components: Due to molding difficulties, achieving high precision in gear components is challenging. Experience in designing gate positions, ejection mechanisms, draft angles, and insert structures is essential for producing accurate parts.