Paper Converting Machine Company

Richard C Dvorak

Richard J Vigneau

Gerald W Buxton

A method and apparatus for sealing the tail of a convolutely wound log which include a longitudinally extending path, an infeed station and a sealing station in the path, equipping the infeed station with a pair of spaced-apart, rotatable rollers, providing one of the rollers with vacuum ports in the periphery thereof, feeding logs sequentially into the nip space between the pair of rollers, rotating the rollers, orienting the log tail to a position over the ports in the one roller, rotating the rollers to unwind the tail, and rolling each log in the path into the sealing station; the unwinding being either (a) triggered by a mark on the tail such as a UV ink stripe or (b) using an air blast.

Method and apparatus for tail sealing of convolutely wound webs

A method and apparatus for sealing the tail of a convolutely wound log which includes the steps of providing a turret rotatably mounted in a frame and having a plurality of circumferentially spaced apart three-roll clusters, feeding a log into a first cluster while positioning an immediately previously fed log with a draped tail in another cluster adjacent glue apparatus and while ejecting an even earlier fed log now rewound from still another cluster, and providing a log infeed mechanism adjacent the turret and including a pair of relatively movable rollers, feeding logs sequentially into the pair of said rollers, rotating the infeed rollers to orient the log tail in a predetermined position, by providing a mark on said log prior to the feeding step, and detecting said mark to orient the tail in a predetermined position.

Growing community of inventors

Green Bay, WI, United States of America

Richard C Dvorak