Research into cycloidal gearing gave Olly Dmitriev, CEO of Vert Rotors UK, the idea that the principles of this technology could be applied to a compressor. The new type of oil-free screw compressor developed and patented by Vert Rotors has proved to be 35 % more energy efficient than dry oil-free machines. The main reason for this energy saving is that there is no stator in the design, which is common in rotary twin shaft compressors and which allows the gas being compressed to leak back.
Thermoforming is a conventional plastics forming process where heat is used to bring a sheet of plastic to its sagging point, or when it becomes pliable. The heat source is removed and the plastic sheet is positioned onto a mold. A vacuum is then drawn through the mold and the sheet conforms to the surface of that mold.