A plastic netting is created in a continuous process in which plastic resin pellets are melted and pushed through a die in "meat-grinder" fashion to form a continuous mesh. Two important elements of this process are that it is continuous, and the product is produced in its final form as a plastic net.cast netting can be produced in configurations ranging from fine filtration-grade plastic netting to a more coarse extrusion, typical of plastic construction fencing.