Abstract: An unwinding machine for adhesive tapes comprising a frame on which two tape reels are mounted and successively unwound by independent driving means outside the machine. Each of the reels is associated with a driven launching roller and the launching roller is displaced away from the tape being unwound from the operative roller whereas the launching roller associated with the spare reel which is at rest, is operated to engage the end of the tape therefrom to unwind the tape and bring the spare reel up to speed when the tape on the operative reel is approaching the end thereof. First and second rollers are provided for each reel adjacent the path of the tape from the respective reel to the location outside the machine, the rollers defining two opposed straight travel sections for the tape.

Abstract: A universal shaft for the rewinding of adhesive tape-cut material is disclosed. The shaft comprises a tubular body with supporting elements carried thereon for board cores on which the adhesive tape-cut material is wound up. The supporting elements have a peripheral surface of a less width than that of the cores and are alternated with friction rings. Thereby the spacing between two successive supporting elements is the same as or less than the width of the smallest core. At one end the shaft has a hub with an extraction ring mounted thereon. Its position on the tubular body is adjustable by means of a series of spacers. The extraction rings and spacers are held together by a clamping sleeve or coupling.