The synthesis of Ecotex PET was carried out in a pilot plant reactor,as shown below, by mixing BHET monomer, ethylene glycol (EG) and water under vacuum, all at high temperatures.

The reaction was stopped taking into account the viscosity of the melted product finally obtained. This mass was cooled with cold water, obtaining long threads, which were cut and sieved until obtaining the desired result, the chips or pellets.