Polypropylene (PP) single-polymer composites (SPCs) with sandwiched woven fabric were successfully
produced by insert injection moulding. The woven fabric was set in the middle of the mould cavity and
fixed by the clamping force. The injected melt could fill and permeate the fibres from both sides of the
woven fabric, so both improved mechanical properties and good appearance could be obtained. A processing
temperature window (160e200 C) with a short cycle time (less than 30 s) could be realized.
Orthogonal experimental method was used. The tensile strength of the PP SPCs could reach up to
38.22 MPa, 45% higher than that of the non-reinforced PP. The effects of different processing parameters
including nozzle temperature, injection pressure, holding pressure and holding time were discussed.
Among the processing parameters, the nozzle temperature is the most important influence factor. The
morphological properties were also observed using camera and microscope. It confirmed the processing
temperature window and good interfacial adhesion.