larịị waya ntupu, ejikari nwere suuare ntupu na Dutch mesh na herringbone ntupu .Otu n'ime anyị akacha mee "ahaziri nzacha" bụ ihe extruder ihuenyo. Mgbe ụfọdụ, a na-akpọkwa nzacha ndị a na ntanetị, ha abụọ pụtara otu ihe.
Ihe nchoputa nke ndi ozo bu ihe di nkpa maka onye obula nke polymer ma obu plastic. Anyị ga-enyocha ihe niile gbasara ntanetị na isiokwu a, site na nkọwa maka ịnye ọnụahịa na otu esi eme ha.