METHOD OF ALUMINUM FOIL ROLLING AND ALUMINUM FOILS PRODUCED BY SAID METHOD Russian patent published in 2020 - IPC B21B1/38 

FIELD: rolling.

SUBSTANCE: method includes steps of producing first (1) and second (2) laminar materials, each of which comprises two superimposed aluminum foils, between which there is a lubricant, one surface of one laminar material is lubricated. First laminar material (1) is connected to the second laminar material (2) to produce double laminar material (3). Lubricated surface is a contact surface between first laminar material (1) and second laminar material (2) or the lubricated surface is a non-contact surface between the first laminar material (1) and the second laminar material (2), in this case, following steps are provided: coiling of double layered material (12) to produce coiled double layered material (13) comprising n turns, partial separation of coiled double layered material (13) by unreeling onto one coil, both aluminum foils of one of first laminated material and second laminated material to obtain at least partially coiled double layered material (18), containing end part (19) formed by corresponding part of both aluminum foils of only one of first laminated material and second laminated material. Partially wound double layered material (18) is unwound to produce double layered material, rolled and separated to produce four aluminum foils. Each of the two aluminum foils (4, 5) has both opaque surfaces (4a, 5a), and each of the other two has matte surface (6a, 7a) and a shiny surface.

EFFECT: invention provides the possibility of increasing productivity when making foil of reduced thickness.

12 cl, 3 dwg