RN ni ibice bibiri bifatika. Nyuma yo kongeramo igipimo runaka cya RN kuri afashe, yiteguye-gukoresha-ibice bibiri-bigomba gukoreshwa mugihe runaka (ubuzima bwinkono) butagenwa gusa nibiri muri reberi, ariko nibindi bikoresho bigize formulaire (urugero: resin, antioxydants, umusemburo, nibindi). Niba ibifatika bidakoreshejwe muri iki gihe, birashobora kugorana kubishyira mu bikorwa kandi ububobere bwayo bwiyongera vuba kugeza igihe geli idasubirwaho amaherezo ibaye. Kubwibyo, ntibikiri gukoreshwa.
Tanga urugero:
Mugukiza ibifatika byibice 100 kuburemere (pbw) bishingiye kuri:
Graft-Chloroprene rubber(ibirimo reberi hafi 16%) | 3-5% pbw RN |
Rubber(ibirimo reberi hafi 20%) | 5-7% pbw RN |
Hydroxyl polyurethane(ibirimo polyurethane hafi 15%) | 3-5% pbw RN |