Ubwiza bwo gusenya umutungo nigikorwa cyingenzi cyimvange ya silicone mugutunganya ibumba. Niba imitungo isenyutse ikennye, biroroshye gutera ibicuruzwa bifite inenge, kugabanya umusaruro wumurimo, kwanduza ibicuruzwa no kongera ibiciro.
Imwe mu mpamvu zituma uruganda rwa reberi rwizirika cyangwa rwonsa ifumbire ni uko amatsinda ya hydroxyl mu kigo cya reberi ahura n’imiti hamwe nitsinda rya hydroxyl hejuru yicyuma hejuru yubushyuhe bwinshi. Indi mpamvu nuko hariho ibintu bike - molekuline - uburemere bwibikoresho bya reberi, ingirabuzimafatizo nyinshi, kandi umusaraba w'imbere - guhuza ntibihagije.
Usibye kongeramo ibikoresho byo kurekura imbere hamwe nibindi bikoresho bivanga, ingamba zo kunoza imitungo ya demolding zirimo no kugenzura umubare w’amavuta ya hydroxyl silicone, kuzamura ubwiza bwa reberi mbisi, kugabanya ibikubiye mu matsinda ya hydroxyl na oligomers muri reberi mbisi, kandi muri icyo gihe, gushimangira kuvanga vacuum, kongera igihe cyo kuvanga, no kugabanya ibikubiye mu bintu bike {{}}}}