Method for eliminating pollutants contained in an elastic part
A method of eliminating pollutants contained in an elastomer part, the method including a step of extracting pollutants by immersing the part in a solvent, the solvent being ethanol.
1. A method of eliminating pollutants contained in an elastomer pump gasket, said method being characterized in that it comprises a step of extracting pollutants by immersing the pump gasket in a solvent, said solvent being ethanol.
2. A method according to claim 1 , in which said extraction step is performed in an extraction column in which the ethanol flows.
3. A method according to claim 1 , in which said extraction step is performed at a temperature lying in the range 20° C. to 75° C., and preferably in the range 25° C. to 70° C.
4. A method according to claim 1 , in which said extraction step is conducted over a duration lying in the range 1 h to 72 h, and preferably in the range 2 h to 48 h.
5. A method according to claim 1 , in which said pollutants are pollutants of low molecular weight.
6. A method according to claim 1 , in which said pollutants are pollutants of high molecular weight.
7. A method according to claim 1 , in which the ethanol is renewed continuously during the pollutant extraction step.
8. A method according to claim 1 , wherein the pump gasket is formed as a solid one-piece construction.