This invention relates to process for the preparation of minwool fibre reinforced thermoplastic /thermoplastic blend composites. This invention particularly relates to making of minwool fibre reinforced thermoplastic/thermoplastic blend composites by melt blending. Minwool fibre mixed polymer composites can be used for moulding to make utility items such as tubes, profiles, bars, containers, boxes, cabinets, building materials, electrical insulations items and the like. Process steps are: drying the thermoplastic polymer/blends 1 to 95 wt % and minwool fibre 1-95 wt % of polymer in an oven at 70° C, mixing the said mixture of thermoplastic polymer and minwool in a single screw extruder at 220° C at rotation speed of screw being 20 rpm to obtain the product.
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