ʻO ka polypropylene ka mea hana no nā membrane. ʻAʻole komo ka membrane a hoʻopaʻa i ka keke i loko o ke keʻena ma hope o ka pau ʻana o ke kaʻina kānana. Hiki ke hoʻohana ʻia ka wai a i ʻole ka ea (ea i hoʻopaʻa ʻia) ma ke ʻano he mea hoʻopūʻulu membrane.

Nā Hiʻohiʻona
● Nā pōʻaiapuni kānana pōkole
● Nā pōʻaiapuni holoi pōkole
● Haʻahaʻa ka makū koena
● ʻAʻohe ukana pololei ma luna o ka membrane ma muli o ka ikaika pani paʻi
● Elasticity kiʻekiʻe o ka membrane
● Ka neʻe ʻana o ka membrane kūʻokoʻa i ka manawa
● Ke sila ʻana o ka ʻōnaehana papa kānana
● ʻĀpana ʻāpana nui o ka puka kānana
● Ka palekana o ka ʻōnaehana membrane