Processing of Commingled Yarns in 3D Skeleton Winding (3DSW)

3D skeleton winding (3DSW) enables the robot-based processing of commingled yarns (CY) to fiber skeleton structures that can be used as local continuous fiber reinforcements in structural injection molded components. This paper presents the latest version of the developed 3DSW prototype line and shows how PPS/GF CY can be processed into loop structures. This includes the investigation of the impregnation quality on different loop sections as well as the study of additional convective heating of the 3D winding area on the achievable tensile failure loads. In addition, compression shear strength test specimens are used to investigate how preheating of CY can increase the adhesion to the injection molding matrix.