Hydroxypropyl methyl cellulose (HPMC) ndi non-ionic cellulose ether yomwe imapezeka ndi cellulose alkalization, etherification, neutralization ndi kuchapa.HPMC ali thickening wabwino, dispersing, emulsifying, filimu kupanga katundu, etc. Ndilo kusankha koyamba kupanga apamwamba zomangira zowonjezera.Mu zomangira, kuchuluka kwa HPMC ndi otsika kwambiri, kokha 0.1% -1%, koma imagwira ntchito yosasinthika ndipo imatha kusintha kwambiri kasungidwe kamadzi, madzimadzi komanso kutsekemera kwazinthu zomangira.Zipangizo zomangira zomwe zawonjezeredwa ndi HPMC ndizosavuta kusakaniza ndikugwiritsa ntchito, kupititsa patsogolo luso la ogwira ntchito yomanga, kuwonjezera nthawi yotseguka, kulimbitsa mphamvu zomangira, ndikupanga zokutira zosalala komanso zofewa.