The knitted mesh can be produced two types, one is common knitted wire mesh(also named flattened knitted wire mesh), the other is crimped knitted wire mesh.
After knitting the common mesh, the tubular sock is flattened into 2 plys as it is made into rolls.
crimped knitted wire mesh
Crimped knitted wire mesh can be run through corrugating rollers to create crimped mesh. This makes the material thicker and more springy.