MANUFACTURE OF EXTREMELY THIN FOIL

PURPOSE:To manufacture an extremely thin foil material by heating a thin material up to a temp. just before melting in the vicinity of the inlet of rolling rolls, forming and cooling the material with the rolling rolls at the time of rolling the long-sized thin material in the longitudinal direction with a two-roll type rolling mill. CONSTITUTION:The long-sized thin material 3-l is rolled in the longitudinal direction with the two roll type rolling mill. That thin material is heated to a temp. just before melting or the melting temp. in the vicinity of the inlet of the rolling/forming rolls 1-1, 1-2, formed and cooled with the rolling rolls. The heating means of a heating device 2 is executed by electric resistance heating, laser beam heating or the like. The '''temp. just before melting 'or' melting temp.' means a temp. corresponding to solid-liquid mixed phase or solid phase and liquid phase in the vicinity of that. In this way, the thin material 3-1 as a base stock can be easily manufactured into the extremely thin material 3-3 which is formed with the rolls and whose thickness is equal to or below a prescribed mum through a heated material 3-2 on the inlet side of the rolls.