Ana samun ƙwayoyin roba na halitta galibi daga latex na itacen Hevea brasiliensis, wanda asalinsa daga Brazil ne amma yanzu ana noma shi a ƙasashen kudu maso gabashin Asiya kamar Malaysia da Indonesia. Idan aka yanke ɓawon itacen, latex, wani ruwa mai launin madara, yana fitowa. Wannan latex ya ƙunshi kusan kashi ɗaya cikin uku na ruwa da kashi ɗaya cikin uku na roba a cikin wani tsari na colloidal. Waɗannan ƙwayoyin suna samuwa a cikin ƙwayoyin halitta na musamman waɗanda ke samar da latex da ake kira laticifers. Robar da ke cikin latex polymer ce ta isoprene, tare da dabarar sinadarai (C₅H₈)ₙ. Bayan tattarawa, latex ɗin yana aiki don ware da kuma tsaftace ƙwayoyin roba.

A gefe guda kuma, ƙwayoyin roba na roba an yi su ne a masana'antun sinadarai. Man fetur suna aiki a matsayin kayan farawa. Misali, ana yin neoprene (polychloroprene) ta hanyar yin acetylene da hydrochloric acid. Emulsion styrene – robar butadiene (E – SBR), wacce ake amfani da ita sosai a cikin tayoyin abin hawa, wani nau'in roba ne. Tsarin ya ƙunshi halayen polymerization a ƙarƙashin takamaiman yanayi don ƙirƙirar polymers tare da halaye irin na roba, waɗanda daga nan ake sarrafa su zuwa barbashi.

Baya ga tushen robar da ba a iya amfani da ita ba, robar da aka sake yin amfani da ita ita ma babbar tushen barbashin roba ce. Ana tattara kayan sharar gida kamar tayoyin da aka yi amfani da su, tafin roba, da sauran kayayyakin roba. Ana yanka su, a niƙa su, sannan a sarrafa su don samun barbashin roba.