Patent ID: 6349867
Filing Date: 2002-02-26
Classification: B65H,Y10T

Abstract:
An apparatus for transporting at least one continuous elongate material web, comprisinga transport arranged to transport the material web at a constant speed between a most upstream position and a most downstream position as seen along the path of transport of the material web, and at least two material web guides arranged between the most upstream and most downstream positions along the transport path, at least one upstream guide being arranged upstream and at least one downstream guide being arranged downstream of an intermediate material web processing position between the most upstream and most downstream positions, the upstream and downstream guides being moved relative to each other so as to impart a continuous sinusoidal variation in speed to the material web along the transport path and through the intermediate processing position, each upstream and downstream guide being eccentrically rotatably mounted so as to move substantially continuously between a first position in which a maximum partial length of the material web and a second position in which a minimum partial length of the material web is temporarily supported by the respective guide, and the upstream guide moving at the same speed as the downstream guide and in a first direction between the first and second positions generally opposite to a second direction of movement of the downstream guide between the first and second positions such that the length of the material web between the most upstream position and the most downstream position is substantially constant.