I-roller ye-oyile ye-thermal heater yinto entsha, ekhuselekileyo, esebenzayo ephezulu kunye nokugcina amandla, uxinzelelo oluphantsi (phantsi koxinzelelo oluqhelekileyo okanye uxinzelelo oluphantsi) kwaye inokubonelela ngamandla obushushu obuphezulu beziko elikhethekileyo lemizi-mveliso, kunye ne-oyile yokudlulisa ubushushu njengesithwala sobushushu, ngokusebenzisa impompo yobushushu ukujikeleza umthuthi ubushushu, ukuhanjiswa kobushushu kwisixhobo sobushushu.
Inkqubo ye-oyile yokufudumeza ubushushu bombane iqulunqwe sisifudumezi sombane esingaqhushukiyo, isifudumezi sobushushu esiphilayo, isitshintshi sobushushu (ukuba sikhona), ibhokisi yokusebenza enobungqina bokudubula, impompo yeoli eshushu, itanki yokwandisa, njl. esetyenziswa kuphela ngokuqhagamshela kubonelelo lombane, ukungenisa nokuthumela ngaphandle imibhobho yombane ophakathi kunye nolunye ujongano lombane.