Demolding Solution for Pebax Material Products
Product Requirements:
The product is a medical surgical consumable with dimensions of D2.4 x 15 mm. The part is small and requires tight tolerances. The mold has a 1 x 2 cavity configuration.
The material is medical‑grade Pebax 3533 + 30% barium sulfate (BaSO₄). This material tends to stick to the mold during production, so the ejection method must be carefully considered during mold design.
Mold Solution:
To meet the product requirements, detailed mold flow analysis was performed before mold manufacturing to determine the precise gate location, ensuring uniform filling of the part. Given the special characteristics of this new material, the mold design incorporates a specific mold steel and a specialized surface treatment, along with a well‑planned mold opening sequence and ejection method. This perfectly resolved the issue of material sticking to the mold.
Injection Molding Production Precautions:
Maintain cleanliness of the surrounding environment and all related equipment during injection molding.
Control the ejection parameters appropriately.
Perform regular maintenance on venting channels, mold surfaces, etc., during production.
Result Feedback:
The mold was trialed using the injection parameters derived from the mold flow analysis. The part achieved mass production readiness at T1, and the customer was highly satisfied.
