A method of rolling aluminum foils and aluminum foils obtained by the above method

摘要

Process for rolling aluminium foils, comprising the steps of: a)-b) providing a first and a second laminate (1, 2) each comprising two aluminium foils overlapped one to another between which a lubricant is interposed; c) lubricating one face of one laminate between the first and second laminate; d) coupling the first laminate with the second laminate obtaining a double laminate, wherein d′) the lubricated face is a contact face between the first and second laminate; or wherein d″) the lubricated face is a non-contact face between the first and second laminate, in this case being provided the intermediate steps of d′″) winding the double laminate obtaining a wound double laminate (13) comprising n coils; ″″) partially separating the wound double laminate (13) by unwinding, by one coil, both the aluminium foils of one of the first and second laminate, obtaining an at least partially wound double laminate (18) comprising an end portion (19) constituted by a respective portion of both the aluminium foils of only one of the first and second laminate; d′″″) unwinding the at least partially wound double laminate (18) obtaining a double laminate; e) rolling the double laminate; f) separating the double laminate obtaining two aluminium foils (4, 5) each have both faces opaque, and two aluminium foils (6, 7) each have an opaque face and a bright face.