makina a alu blister, ndi zida zolongedza zomwe zimagwiritsidwa ntchito makamaka kuyika zinthu m'matuza apulasitiki owonekera. Kupaka kwamtunduwu kumathandizira kuteteza katunduyo, kukulitsa mawonekedwe ake, motero kumalimbikitsa molimba mtima zolinga zogulitsa. Makina opangira ma blister nthawi zambiri amakhala ndi chipangizo chodyera, chopangira, chosindikizira kutentha, chida chodulira ndi chotulutsa.
