Pultrusion-Extrusion Hybrid Lines

Pultrusion-Extrusion Hybrid Lines

The Latest Technological Breakthroughs in Pultrusion‑Extrusion Hybrid Lines

1. Optimized Impregnation Using Extrusion–Pultrusion Methods

In a recent study, researchers developed a hybrid extrusion–pultrusion process for fabricating carbon-fiber-reinforced polypropylene filaments. They meticulously optimized key processing variables—melt temperature, pulling speed, number of spreader pins, and fiber surface treatment—to enhance fiber–matrix adhesion, known as interfacial shear strength (IFSS).

Key findings:

Surface treatment with liquid nitrogen notably improved IFSS by increasing fiber surface roughness.

The optimal conditions: 190 °C melt temperature, 40 cm/min pulling speed, and three spreader pins delivered the best impregnation quality.

These advancements contribute to producing structurally coherent and mechanically robust composite profiles.

2. Curved Profile Capability with Radius‑Pultrusion

Traditional pultrusion has been limited to straight profiles. Now, Radius‑Pultrusion—a process innovation introduces a moving die configuration. This allows the creation of curved 2D or 3D reinforced profiles, enabling more complex, form-adapted components

3. Intelligent Composite Design with Polymer Informatics

A forward-thinking development involves using AI-driven modeling in composite formulation. A new polymer composites informatics platform trains machine learning models using datasets on flame behavior, mechanical, thermal, and electrical performance.

Though not pultrusion-specific, this digital tool empowers predictive design for reinforced profiles, eliminating many trial-and-error cycles in material development.