Firimu yo gupfunyika iraboneka mu bunini n'ubugari butandukanye kugira ngo ihuze n'ibikenewe bitandukanye byo gupfunyika n'ubwoko butandukanye bw'ibicuruzwa.
Ubunini bukunze kugaragara muri mikoroni cyangwa gauge, aho ubunini busanzwe bwa stretch film ari mikoroni 12-30 (μm) cyangwa gauge 50 - 120 gaude.
Ubugari busanzwe buri hagati ya santimetero 30 na 50 (cm 30 na 50) kandi bushobora guhindurwa hakurikijwe ibisabwa byihariye.
Ubunini:
Ubunini butandukanye butanga imbaraga n'uburinzi bitandukanye.
Filimi nini, nka 20-35 μm (80-140 gauge), zikwiriye ibintu biremereye cyangwa bifite impande zisongoye, bitanga ubushobozi bwo guhangana n'ibitonyanga, filimi ituma ishobora kwihanganira imitwaro iremereye.
Filimi ntoya, nka mikoroni 10-15 (40-90 gauge), ni nziza ku bintu byoroheje cyangwa iyo ari ngombwa ko igiciro gikoreshwa neza.
Ubugari:
Filimi yo gupfuka iboneka mu bugari butandukanye, ubusanzwe ingana na santimetero 30 kugeza kuri santimetero 50.
Guhitamo ubugari biterwa n'ingano n'ingano by'ibintu bipfunyitse.
Hitamo ubugari bunini mu gihe upakiye ibintu binini cyangwa binini kugira ngo bitwikirirwe neza kandi bihamye.
Uburyo bwo kubara ibipimo bya firime yo kugorora ikenewe
| Kubara ibiro | Kubara Uburebure |
| Uburebure = Uburebure (m) * Ubunini (um) * Ubugari (cm) * 0.918 | Uburebure = Uburemere (kg) / Ubunini (um) / Ubugari (cm) / 0.918 |
| Tanga urugero: | |
| Uburebure bwa metero 550, ubugari bwa 22um, ubugari bwa cm 50, uburemere ni hafi kg 5.5. (550 * 0.022 * 0.5 * 0.918 = 5.5) | |
| Uburemere bwa kilo 3, ubugari bwa 22um, ubugari bwa 50cm, uburebure bungana na metero 297. (3/0.022/0.5/0.918=297) | |












