read out u201c on fly u201d of the table should be sufficient to demonstrate a dynamic performance anyhow it would be useful to calculate the dynamic response index according to the thereinbelow stated method dt37h an average of all the dt corresponding to temperature larger than 37 u00b0 c dt37c an average of all the dt corresponding to temperature less or equal to 37 u00b0 c the ird value is calculated as a dispersion increase as the temperature move up over 37 u00b0 c by reading from t20 to t1 whereas the irc u2212 value is calculated as a decrease of the dispersion as the temperature move down under 37 u00b0 c by reading from t1 to t20 it should be apparent that being dt37h gt dt37c we will have ird u2212 lt ird anyhow it should be expedient to use ird since these values are more near to reality a temperature increase due to motion finally are herein proposed some evaluations related to the advantages of the inventive method found in the terms of ecosustainability with respect to conventional methods the virgin polyester polymer has an energy contents of about 83 mj hg a production of 1 kg of the virgin polymers causes moreover an emission of 20 10 u2212 3 kg so 2.