*4.4.3.1. By warp knitting method*

Wunner [32] designed a multiaxis warp knit machine for Liba GmbH. The machine is equipped with a pinned conveyor bed, a fiber carrier for each yarn set, a stitching unit, yarn creels and a take-up unit. It employs ±bias, warp and filling (90° yarn) yarn sets together with stitching yarn. Stitching yarn unites all the layers and provides structural integrity (Figure 43). Tricot pattern is generally used for this process.

**Figure 43.** (a) Stitching unit and (b) warp knitting machine [32].
