Abstract
For high speed press forming of fibre reinforced thermoplastic sheet materials, a high impregnation quality is advantageous for utilisation of the potential regarding mechanical properties. Hence, the impregnation process is crucial to material properties and economy. In this paper the influence of process parameters on mechanical properties is investigated using an isobaric double belt press technique. Relevant process parameters are defined and varied using the Taguchi technique. Evaluating impregnation quality with 3-point bending tests and micrographs, the influence and meaning of process parameters is specified. Process parameters are optimised regarding flexural stress and strength, and a process window for a fabric reinforced polyamide PA 12 is defined.
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