Yog'sizlantirish ifloslanishi asosan alyuminiy folga yuzasida namoyon bo'ladi 0 davlat. Alyuminiy folga tavlangandan keyin, u suv cho'tkasi usuli bilan sinovdan o'tkaziladi, va u suv cho'tkasi sinovida ko'rsatilgan darajaga etib bormaydi.
Suv bilan yuvish sinovini talab qiladigan alyuminiy folga asosan chop etish uchun ishlatiladi, boshqa materiallar bilan kompozitsion, va boshqalar. Shuning uchun, the surface of the aluminum foil must be degreasing clean and reach the level specified by the water-washing test.
The main reasons for unclean degreasing: excessive oil on the surface of the aluminum box; excessive slitting tension; unreasonable annealing process.
