Tinthu ta rabara lachilengedwe timachokera makamaka ku latex ya mtengo wa Hevea brasiliensis, womwe umachokera ku Brazil koma tsopano umalimidwa kwambiri m'maiko akumwera chakum'mawa kwa Asia monga Malaysia ndi Indonesia. Khungwa la mtengo likadulidwa, latex, madzi oyera ngati mkaka, limatuluka. Latex iyi ili ndi madzi pafupifupi gawo limodzi mwa magawo atatu ndi limodzi mwa magawo atatu a tinthu ta rabara mu colloidal suspension. Tinthu ta rabara timeneti timapangidwa mkati mwa maselo apadera a latex - omwe amapanga laticifers. Rabala mu latex ndi polima ya isoprene, yokhala ndi formula ya mankhwala (C₅H₈)ₙ. Pambuyo posonkhanitsa, latex imakonzedwa kuti ipatule ndikuyeretsa tinthu ta rabara.

Tinthu ta rabara topangidwa, kumbali ina, ndi topangidwa ndi anthu m'zomera za mankhwala. Ma petrochemicals amagwira ntchito ngati zinthu zoyambira. Mwachitsanzo, neoprene (polychloroprene) imapangidwa pogwiritsa ntchito acetylene ndi hydrochloric acid. Emulsion styrene – butadiene rabara (E – SBR), yomwe imagwiritsidwa ntchito kwambiri m'matayala a magalimoto, ndi mtundu wina wopangidwa. Njirayi imaphatikizapo polymerization reactions pansi pa mikhalidwe inayake kuti apange ma polima okhala ndi zinthu zofanana ndi rabara, zomwe kenako zimakonzedwa kukhala tinthu.

Kuwonjezera pa magwero a rabara omwe sanagwiritsidwe ntchito, rabara yobwezeretsedwanso ndi gwero lofunika kwambiri la tinthu ta raba. Zinthu zotayira monga matayala akale, zidendene za rabara, ndi zinthu zina za rabara zimasonkhanitsidwa. Zimadulidwa, kuphwanyidwa, ndikukonzedwa kuti zipeze tinthu ta raba.