Kuvanga reberi ni ugukwirakwiza ibice bitandukanye bingana muri reberi hifashishijwe imbaraga zumukanishi wimashini ikora reberi, kugirango habeho sisitemu yo gukwirakwiza ibyiciro byinshi hamwe na reberi nkibiciriritse cyangwa uruvange rwa reberi hamwe nibice bimwe bihuye (bihuza agent, izindi polymers) nkibikoresho bihuza (nkibikoresho byuzuza ifu, okiside ya zinc, pigment, nibindi) nkibice bitatanye. inzira. Ibisabwa bya tekiniki byihariye byuburyo bwo guhuza ni: gutatanya kimwe cyumubumbyi, kugirango ikwirakwizwa ryiza ryumubumbyi, cyane cyane ibikoresho byongera imbaraga nka karubone yumukara, bigerwaho kugirango reberi ikore neza. Rubber yavuyemo yitwa 'compounding rubber ' kandi ubuziranenge bwayo bugira uruhare runini mugutunganya no gutunganya ibicuruzwa.
Kurwanya gusaza gushyushye cyangwa gusaza ubushyuhe biragenda biba ngombwa, cyane cyane mubikoresha amamodoka aho ibice bya reberi bikoreshwa ahantu hatwikiriwe nubushyuhe bukabije bwibidukikije. Abakora ibinyabiziga bumvise bongerewe ingufu kugirango biyemeze kuramba kubice byabo bya reberi. Anaerobic ubushyuhe bwo gusaza hamwe nubushyuhe nubusaza bwikirere biratandukanye. Rubber ifite ubushyuhe bwiza, ariko ntishobora kwihanganira igitero cya ogisijeni.
Kurwanya gusaza gushyushye cyangwa gusaza ubushyuhe biragenda biba ngombwa, cyane cyane mubikoresha amamodoka aho ibice bya reberi bikoreshwa ahantu hatwikiriwe nubushyuhe bukabije bwibidukikije. Abakora ibinyabiziga bumvise bongerewe ingufu kugirango biyemeze kuramba kubice byabo bya reberi. Anaerobic ubushyuhe bwo gusaza hamwe nubushyuhe nubusaza bwikirere biratandukanye. Rubber ifite ubushyuhe bwiza, ariko ntishobora kwihanganira igitero cya ogisijeni.
Mw'isi irushanwa cyane mu nganda za reberi, ikiguzi cyo guhuza ni ingenzi mu kuzamura ubukungu ku bicuruzwa. Birashoboka guteza imbere ibice byuzuza ibyo umukiriya akeneye muburyo bwimikorere yombi, ariko byangwa numukiriya kuko bihenze cyane. Mubyongeyeho, ibicuruzwa bya reberi bigurishwa mubunini kuruta kuburemere (ibicuruzwa bibumbwe mubunini). Kubwibyo, birumvikana kugereranya 'ikiguzi kuri volume ' kuruta 'igiciro kuburemere ' cya reberi.