Analysis of knitting technologies of warp knitted glass fiber fabrics

In view of the phenomena that the glass fibre yarns break and damage easily due to brittleness of the yarns during knitting process,the warp knitting performances of glass fibre yarns are analyzed by experiments.Some precautions during warping processes are discussed.Several single bar and double bar fabrics are knitted on a Raschel latch needle warp knitting machine.The knitting technology of warp knitted glass fabrics is studied.The experimental results revealed that the larger the curvature and the wrap angle of glass fibre yarns bended at the hook of needle and the pinhole of guide bar needle,the easier the rupture of the yarns.The technological parameter adjustment is important during warping processes.In course of the stitch formation,the collapse of yarns occurs largely at the moment of landing.The needles hook with narrower width is preferred.In the precondition of stitch formation ensured smoothly,the tension of warping yarns ought to be decreased.The fabric surface is fuzzed when the fabric of high density is knitted.