Extruded rubber products differ from moulded rubber products based on how they’re made. Extruded parts are forced through a die of the required cross section under pressure of an extruder. These parts are often made with soft, unvulcanised rubber compounds that are fed into the extruder. The resulting extrusion leaves the rubber in a soft, pliable state. The rubber extrusion process begins with a rubber compound being fed into an extruder. The material is fed into a feed hopper, which takes the material and feeds it into various flutes in a revolving screw. The screw will begin to carry the rubber forward into the die, with an increase in pressure and temperature occurring as the material gets closer to the die itself.