Rotomolding is a ideal process for the design of pieces with greater impact resistance, high durability and easy maintenance without investing too much money in moulds. It consists in inserting a liquid or powder polymer inside of a mold that continuously rotates at a temperature between 250°C and 450°C, melting and synthesizing the material until it sticks to its walls, the result is a hollow closed piece, most of them with uniform thickness. The rotomolding process can develop projects than work as thermal insulation.