6. Reinforcing knitted 3D objects

A knitted fabric is made up of loops, each of which contains a reserve of yarn that makes it highly deformable. However, it is possible to block the structure by inserting straight (non-corrugated), non-meshed yarns in the desired directions (figure 26 ). If these wires have a high Young's modulus, i.e. are not very extensible, then the knitted fabric will have little or no deformability in these particular directions. An example is given in figure 27 with a circumferential reinforcement yarn in a bent tube.