I-double belt roll press ibona ukudluliswa kwamandla ebhandeni lensimbi ngokufudumeza nokupholisa umqulu ngamafutha okuqhuba ukushisa namanzi okupholisa. Izinto ezisetshenziswayo ziyashisisa, zipholile futhi zicindezelwe umshini wokunyathelisa phakathi kwemichilo emibili yensimbi.