Ịkọwa eriri PP (eriri polypropylene) n'ụzọ ziri ezi dị mkpa maka ịrụ ọrụ nkwakọ ngwaahịa na arụmọrụ ọnụ ahịa. Ntuziaka a na-ekpuchi usoro nkọwapụta igodo: obosara (5-19mm), ọkpụrụkpụ (0.35-0.80mm), ike nkwụsị (45-230kg), njedebe elu, na mpịakọta mpịakọta. Ịghọta otu oke nke ọ bụla si emetụta ndakọrịta akụrụngwa, nchekwa ibu, yana ọnụ ahịa mkpokọta na-enyere ndị ọkachamara n'ịzụ ahịa aka ịkọwa eriri ziri ezi maka ngwa ha. Dị ka ụkpụrụ ụlọ ọrụ si dị, nkọwa ziri ezi na-ebelata oge nkwụsịtụ, na-eme ka nkwụsi ike ibu dị elu, ma na-ebuli ụgwọ ihe onwunwe.