Ku hlanganisiwa ka rhaba i ku hangalasa swihlanganisi swohambana hambana hiku ringana eka rhaba hiku pfuniwa hi matimba ya michini ya muchini wo endla rhaba, leswaku kuta endliwa multi-phase colloidal dispersion system na rhaba tani hi xikarhi kumbe nkatsakanyo wa rhaba na swiphemu swin’wana leswi fambelanaka (matching agent, ti polymers tin’wana) tani hi xikarhi, na switirhisiwa swo fambelanisa leswinga fambelaniki (kufana na ti powder fillers, zinc oxide, . ti pigments, na swin’wana) tani hi xiphemu lexi hangalakeke. endlelo. Swilaveko swokarhi swa xithekiniki swa maendlelo ya compounding i: ku hangalasiwa loku fanaka ka compounding agent, leswaku ku hangalasiwa lokunene ka compounding agent, ngopfu ngopfu reinforcing compounding agent yofana na carbon black, swifikeleriwa kutiyisisa matirhelo lawa yanga cincekiki ya rhaba. Raba leyi humelelaka yi vuriwa 'compounding rubber' naswona khwalithi ya yona yina nkucetelo wa nkoka eka ku lulamisiwa kuya emahlweni na khwalithi ya swihumelerisiwa.
Ku lwisana na ku dyuhala ka moya wo hisa kumbe ku dyuhala hi ku hisa swiya swiva swa nkoka swinene, ngopfu ngopfu eka switirhisiwa swa mimovha laha swiphemu swa rhaba switirhisiwa ngopfu eka tindzhawu leti funengetiweke letingana mahiselo yale henhla ya ndzhawu. Vaendli va timovha va twe ntshikilelo lowu andzaka wo tinyiketela ku hanya vutomi byo leha bya swiphemu swa vona swa rhaba. Swihlawulekisi swa ku dyuhala ka ku hisa ka anaerobic na swivumbeko swa ku dyuhala ka ku hisa na moya swa hambana. Rhaba yina ku tiya ko antswa ka kuhisa, kambe yinga ha tsandzeka ku tiyisela nhlaselo wa oxygen.
Ku lwisana na ku dyuhala ka moya wo hisa kumbe ku dyuhala hi ku hisa swiya swiva swa nkoka swinene, ngopfu ngopfu eka switirhisiwa swa mimovha laha swiphemu swa rhaba switirhisiwa ngopfu eka tindzhawu leti funengetiweke letingana mahiselo yale henhla ya ndzhawu. Vaendli va timovha va twe ntshikilelo lowu andzaka wo tinyiketela ku hanya vutomi byo leha bya swiphemu swa vona swa rhaba. Swihlawulekisi swa ku dyuhala ka ku hisa ka anaerobic na swivumbeko swa ku dyuhala ka ku hisa na moya swa hambana. Rhaba yina ku tiya ko antswa ka kuhisa, kambe yinga ha tsandzeka ku tiyisela nhlaselo wa oxygen.
Emisaveni leyi phikizanaka swinene ya bindzu ra rhaba, ntsengo wa compounding i wa nkoka swinene eka ku humelela ka ikhonomi ya xitirhisiwa. Swinga koteka ku tumbuluxa xivumbeko xa compound lexi fikelelaka swilaveko swa muxavi hi tlhelo ra matirhelo hivumbirhi bya swona, kambe xi ariwa hi muxavi hikuva xi durha ngopfu. Ku engetela kwalano, switirhisiwa swa rhaba hi xitalo swi xavisiwa hi volume kutlula hi ntiko (switirhisiwa leswi vumbiweke hi xitalo swixavisiwa hi sayizi). Hikwalaho, swa twala ku pimanisa 'cost per volume' ku tlula 'cost per weight' ya rhaba.