초록 ▼

A method for the production of a unitary or laminated film or sheet of finely controlled thickness from a molten material utilizes spaced, first and second parallel rolls rotating in opposite directions to form a kissing zone between the rolls. The method moves the surface of a cooling rotating roll

A method for the production of a unitary or laminated film or sheet of finely controlled thickness from a molten material utilizes spaced, first and second parallel rolls rotating in opposite directions to form a kissing zone between the rolls. The method moves the surface of a cooling rotating roll past a region of contact with a molten material to form a rapidly solidifying layer of material thereon, which then is passed into the kissing zone, wherein the solidified layer is either pressed to form a unitary film or is fused by contacting another solidified layer.

대표청구항 ▼

A method for the production of a film or sheet of finely controlled thickness and microstructure from a molten material which utilizes spaced, first and second parallel rolls rotating in opposite directions to form a kissing zone between the rolls, the method comprising: contacting a molten material

A method for the production of a film or sheet of finely controlled thickness and microstructure from a molten material which utilizes spaced, first and second parallel rolls rotating in opposite directions to form a kissing zone between the rolls, the method comprising: contacting a molten material overflowing from the uppermost portion of a molten material receptacle onto the rotating first roll and cooling thereon to form an at least partially solidified first film of predetermined thickness, wherein the direction of rotation of said first roll is such that the partially solidified film is conveyed upward and away from the surface of the molten material and over the uppermost portion of said first roll; rotating the second roll around a higher circumferential axis than the first roll, whereby the second roll does not contact the molten material in the molten material receptacle; pressing the first film on the first roll with the second roll in the kissing zone to form a substantially solidified film product, whereby neither the first nor the second roll is immersed in the molten material; removing the solidified film product.