Cakuda na roba shi ne ya tarwatsa daban-daban mahadi a ko'ina cikin roba tare da taimakon inji karfi na roba yin inji, don haka kamar yadda ya samar da Multi-lokaci colloidal watsawa tsarin tare da roba a matsayin matsakaici ko cakuda roba da wasu masu jituwa aka gyara (matching wakili, sauran polymers) a matsayin matsakaici, da kuma m matching jamiái (kamar foda fillers, zinc oxide lokaci, da dai sauransu). tsari. Ƙayyadaddun ƙayyadaddun buƙatun fasaha na tsarin haɓakawa sune: rarraba kayan aiki na kayan aiki, don haka mafi kyawun tarwatsawa na kayan aiki, musamman ma'auni mai ƙarfafawa irin su carbon baki, an samu don tabbatar da daidaiton aikin roba. Sakamakon roba ana kiransa 'compounding rubber' kuma ingancinsa yana da tasiri mai mahimmanci akan ƙarin sarrafawa da ingancin samfur.
Juriya ga tsufa na iska mai zafi ko tsufa na zafi yana ƙara zama mahimmanci, musamman a cikin aikace-aikacen mota inda aka fi amfani da sassan roba a wurare da aka rufe tare da yanayin yanayin zafi. Masana'antun kera motoci sun ji ƙara matsa lamba don ƙaddamar da tsawon rayuwar sabis don sassan robansu. Anaerobic zafin tsufa Properties da zafi da iska tsufa Properties ne daban-daban. Roba yana da mafi kyawun juriya na zafi, amma har yanzu bazai jure harin oxygen ba.
Juriya ga tsufa na iska mai zafi ko tsufa na zafi yana ƙara zama mahimmanci, musamman a cikin aikace-aikacen mota inda aka fi amfani da sassan roba a wurare da aka rufe tare da yanayin yanayin zafi. Masana'antun kera motoci sun ji ƙara matsa lamba don ƙaddamar da tsawon rayuwar sabis don sassan robansu. Anaerobic zafin tsufa Properties da zafi da iska tsufa Properties ne daban-daban. Roba yana da mafi kyawun juriya na zafi, amma har yanzu bazai jure harin oxygen ba.
A cikin babban gasa na masana'antar roba, farashin hadawa yana da mahimmanci ga nasarar tattalin arzikin samfur. Yana yiwuwa a samar da wani tsari na fili wanda ya dace da bukatun abokin ciniki dangane da ayyukan biyu, amma abokin ciniki ya ƙi shi saboda yana da tsada sosai. Bugu da ƙari, samfuran roba gabaɗaya ana sayar da su ta ƙarar fiye da nauyi (samfurin da aka ƙera gabaɗaya suna girma). Saboda haka, yana da ma'ana a kwatanta 'kudin kowane juzu'i' maimakon 'kudin kowane nauyi' na roba.