Nsalu yamthunzi imapangidwa kuchokera ku polyethylene yoluka.Ndiwosinthasintha kuposa nsalu ya mthunzi wolukidwa.Itha kugwiritsidwanso ntchito ngati maukonde oyala, chivundikiro cha wowonjezera kutentha, mauna opumira mphepo, nswala ndi ukonde wa mbalame, ukonde wa matalala, makhonde ndi mithunzi ya khonde.Chitsimikizo chakunja chikhoza kukhala zaka 7 mpaka 10.