The rolling man da sauran man tabo da suka rage a saman foil, wanda aka kafa akan bangon bango zuwa digiri daban-daban bayan annashuwa, ana kiransu wuraren mai.
Babban dalilai na wuraren mai: babban mataki na mai a aluminum tsare mirgina, ko kewayon distillation na mirgina mai bai dace ba; infiltration mai na inji a cikin mai birgima na aluminum; tsari mara kyau na annealing; excessive oil on the surface of the product during rolling; The slitting tension is too large, causing the aluminum foil roll to be too tight.
