E jiri ya tụnyere nzacha 60-mesh, nzacha 80-mesh ka mma. A na-egosipụtakarị nọmba ntupu n'usoro ọnụọgụ oghere kwa inch dị n'ụwa, ụfọdụ ga-eji nha nke oghere ntupu ọ bụla. Maka nzacha, nọmba ntupu bụ ọnụọgụ nke oghere dị na ihuenyo kwa inch square. Nọmba ntupu Ka ọnụọgụ ntupu ahụ dị elu, ka oghere ntupu na-abawanye, na nzacha kacha mma; na-agbada nọmba ntupu, oghere ntupu dị ole na ole, yana nzacha nke ukwuu.
Mesh nzacha, nke a na-akpọ nzacha nzacha, bụ ntupu igwe dị iche iche. A na-ekewakarị ya ka ọ bụrụ nzacha nzacha igwe na nzacha eriri textile. Ọrụ ya bụ nzacha ihe mgbaze gbazere na ịbawanye nguzogide ihe onwunwe, si otú a na-enweta nzacha. Ọ nwere ike wepụ ihe adịghị arụ ọrụ ma melite mmetụta nke ịgwakọta ma ọ bụ plasticizing. Nzacha ahụ nwere ihe ndị dị ka nguzogide okpomọkụ, nguzogide acid, nguzogide alkali, na iyi nguzogide. A na-ejikarị ya na mmanụ ala, ụlọ ọrụ kemịkalụ, nrụpụta igwe na ụlọ ọrụ ndị ọzọ.