Abstract: A packing machine presenting a wrapping conveyor for continuously feeding a succession of wrapping spindles along a given path; a feed device for continuously feeding a succession of sheets of wrapping material in a direction tangent to the path, along the path and in time with the spindles; and a pickup device associated with each spindle, and for gripping a front portion of a relative sheet and inserting the front portion between two successive spindles so as to fold an intermediate portion of the sheet about the rear spindle; a retaining member, associated with each spindle, cooperating with the intermediate portion of the relative sheet to retain it on the relative rear spindle and on the wrapping conveyor.