ULTRASONIC ROLL TAIL CLOSURE OF NON-WOVEN WEB MATERIAL METHOD AND APPARATUS

摘要

An apparatus for securing the tail end of a spirally wound roll (5) of nonwoven, polymer-based material to the roll (5) to preclude unintended unwinding of the roll, the apparatus comprising a winding assembly for forming about a winding axis a spirally wound roll (5) with a tail end, a fixture (43) for a roll tacking assembly with an ultrasonic tool (48) oscillating on an oscillating axis (100), and a fixture for moving the tool into momentary tangential contact with an outermost winding layer of the roll in a manner that orients the oscillating axis (100) orthogonally to the winding axis. The apparatus implements a method of locating the tail end of the spirally wound roll (5) and orienting the tail end in relation to the securing tool.