PULTRUSION HEAD TO PRODUCE LONG FIBRE REINFORCED THERMOPLASTIC MATRIX PROFILES

摘要

The present patent refers to the development and fabrication of a pultrusion head (1) to produce composite profiles from thermoplastic powder coated fibre tows (2) (towpregs). Mounted in a conventional thermosetting comprosite pultrusion machine, the head (1) allows to produce continuous of long fibre reinforced thermoplastic profiles when fed with powder coated fibre tows. The head (1) is composed by three main components: a pre-heating furnace (3), a consolidation die (4) and a cooling die (12). Carbon and glass fibre reinforced 24x4x2 (mm) U-shaped profiles based on polycarbonate (PC) and polypropylene (PP) matrices, respectively, were already successfully pultruded at linear production rates varying from 0.2 to 2 m/min.