The paper describes polymers, their formation, division, the use of polymers in today's world, polymeric materials, processes for the processing of polymeric materials and the simulation of injection of polymeric melt into a mold cavity with the goal of identifying possible disadvantages in order to reduce the cost of production and improve the quality of the shovel itself. The theoretical part of the thesis includes a description of the injection press as the basic simulation method. Simulation programmes for injection pressing of the current market situation are described. In the practical part, a simulation of the flow of the polymeric melt into the mold cavity for the amorphous and crystalline structure plasticiser was made, and the results obtained were described.