Aluminium ntawv ci yog dav siv los kaw cov thawv yogurt (xws li lub khob yas) thiab feem ntau coated nrog ib txheej ntawm cov yas vim acidic xwm ntawm yogurt thiab xav tau rau tshav kub sealing. Yog tias siv cov khob yas preformed, lub hau ntawv ci feem ntau yog txiav ua ntej thiab kwv yees li ntawm 2500-3000 lub hau tau ntim rau hauv cov thawv tshwj xeeb kom txo qis kev puas tsuaj. Cov hau no yog<100mm in diameter and usually have a pull tab for easy opening.
Cov ntawv ci ntsuas yog li 40 μm thiab txhua lub hau feem ntau yog embossed. Cov qauv embossed tuaj yeem sib txawv kom tau raws li cov neeg siv khoom xav tau, nrog qhov tob tob txog li 100 μm. Embossing yog qhov tseem ceeb los pab kom yooj yim xaiv tus neeg lub kaus mom los ntawm cov ntawv xov xwm sib dhos ua ntej lawv muab tso rau hauv lub khob ntim thiab kub kaw.
