Madzi opangidwa ndi ? kuyanika ndi viscous madzi ndi utomoni, kapena mafuta, kapena emulsion monga chothandizira chachikulu, ndi organic zosungunulira kapena madzi. Zovala zokhala ndi madzi zomwe zimagwira ntchito bwino zimakhalanso ndi magwiridwe antchito abwino kwambiri, mphamvu zobisala bwino, zomatira zolimba, kusunga bwino madzi ndi mawonekedwe ena; Cellulose ndiye zopangira zoyenera kwambiri zoperekera zinthu izi.