Degreasing polusi utamané manifested ing lumahing aluminium foil ing 0 negara. Sawise aluminium foil wis anil, dites nganggo metode sikatan banyu, lan ora tekan tingkat sing ditemtokake ing tes sikat banyu.
Aluminium foil sing mbutuhake tes ngumbah banyu utamane digunakake kanggo nyetak, gabungan karo bahan liyane, lsp. Mulane, 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.
