Elastic forming roller and an elastic roller manufacturing method for forming the film sheet thin

The present invention relates to an elastic forming roller for producing a medium thick film sheet, and a manufacturing method thereof. Has been provided a method of supporting a rubber roller and guide rollers by disposing a small diameter rubber roller in a topmost central portion of the inner circumference of a metal belt having a thin thickness and a large diameter and disposing a plurality of guide rollers formed of metal in the inner circumference of the metal belt except for the topmost central portion. However, when a casting roller pressurizes and presses the rubber roller, a bending phenomenon still exists, and there has been occurrence of a phenomenon that a coiled metal belt has been leaning to one side by the plurality of guide rollers. Therefore, the purpose of the present invention is to provide the elastic forming roller for producing the medium thick film sheet. The elastic forming roller has an effect of remarkably lowering a defect rate of the medium thick film sheet due to the leaning phenomenon exhibited in an existing metal belt by constructing the elastic forming roller such that a split pipe expanded by a universal chuck pushes an elastic rubber to enable the elastic rubber to be closely fixed to the inner circumference of a thin film metal pipe. Also, the purpose of the present invention is to provide the manufacturing method of the elastic forming roller. The elastic forming roller of the present invention, as an elastic forming roller (1) which is installed to be closely attached to a rolling roller to roll a molten resin supplied through a die, comprises a rotary center shaft (10), the split pipe (20), the elastic rubber (30), a wave shaped cutting unit (41) formed in the split pipe (20), a wave shaped cutting unit (42) formed in the elastic rubber (30), the universal chuck (50), and a thin metal pipe (60). 본 발명은 중박필름시트 제조용 성형탄성롤장치 및 그 제조방법에 관한 것으로서, 종래에는 두께가 얇고 큰 직경을 갖는 금속벨트) 내주연에 소경의 고무롤러를 최상단 중앙에 배치하고, 그 부분을 제외한 금속벨트 내주연에 다수의 금속으로 이루어진 가이드롤러를 배치하여 지지하는 방법이 제공되었으나, 고무롤러를 캐스팅롤러가 가압 압착하게 되면 휨현상이 여전히 존재하게 되고, 또한 다수의 가이드롤러에 의해서 권취된 금속벨트가 어느한 쪽으로 쏠리는 현상이 발생하게 되는 현상이 있었던 바, 본 발명은 연동척으로 확관 되는 분할파이프가 탄성고무를 밀어 박막금속파이프 내주연과 밀착고정 되도록 구성시킴으로써, 기존 금속벨트에서 나타나는 쏠림형상에 의한 중박필름시트의 불량률을 현저하게 낮출 수 있는 효과를 갖는 중박필름시트 제조용 성형탄성롤장치 및 그 제조방법을 제공하는 것이다.