Patent ID: 6468461
Filing Date: 2002-10-22
Classification: B21B,B29C,F16C,F28F

Abstract:
A process for forming long sheet products by pressing molten plastic materials between a forming roller and a forming drum unit, each having an axis of rotation, the process comprising:pressing said forming drum unit against the outer surface of said forming roller with a desired force to elastically flex the surface of said forming drum unit inwardly in a curve along the outer surface of said forming roller, such that air pocket induction is avoided due to the pressing, to thereby form said sheet products between said forming drum unit and said forming roller while said sheet products are transferred and pressed between said forming roller and said forming drum unit, rotating said forming drum unit about an axis perpendicular to its axis of rotation and perpendicular to the direction of travel of said sheet products, while maintaining the desired force of the contact between said forming drum unit and the outer surface of said forming roller, in order to correct positional deviations and continue the pressing and formation of said sheet products.