Abstract: An embossing device and a method for embossing, employing an electromagnetic induction device such as to induce an eddy current prevalently on the outer surface of an embossing roller. The eddy currents are such as to prevalently heat the outer surface of the embossing roller.

Abstract: An embossing device and a method for embossing, employing an electromagnetic induction device such as to induce an eddy current prevalently on the outer surface of an embossing roller. The eddy currents are such as to prevalently heat the outer surface of the embossing roller.

Abstract: For bonding together two or more plies of cellulose fibers, the plies are fed to a lamination nip between a ply-bonding rotating element and an anvil element. The ply-bonding rotating element has rollers with a cylindrical surface provided with small protuberances co-acting with larger protuberances provided on a cylindrical surface of the anvil rotating element. The plies are bonded, if necessary with the aid of a functional fluid, not containing adhesive, due to the effect of the pressure between the protuberances.

Abstract: The unwinder includes an unwinding station, in which to arrange a reel to be unwound. In the unwinding station there is arranged a series of guide rollers, defining a feed path of the web material. There are also provided: a cutting member adapted to cut a web material coming from an exhausted reel, and splicing members, to splice a trailing edge of a first web material coming from an exhausted reel to a leading edge of a second web material coming from a new reel. A pick-up device is configured to pick up the leading edge of the second web material from a temporary retaining element, carried by a transfer unit to transfer reels to the unwinding station.

Abstract: A method and device for preparing the hard structures of teeth for the application of dental restorative materials, according to which, after a step of mechanical treatment to remove a layer of tissue from the hard structure of the tooth, at a given zone affected by a disorder, and after removing the debris generated by such treatment, a layer of an adhesive substance is spread over the zone using an application head connected by a wire in a support handpiece to a control power circuit able to generate electrical signals which subject the given zone to a difference in potential which subjects the adhesive substance to an electrokinetic force due to the passage of an electrical current able to move the adhesive substance in an even and deep way inside dentinal tubules and so that it occupies the irregular surface of the tooth enamel.

Abstract: A method and device for preparing the hard structures of teeth for the application of dental restorative materials, according to which, after a step of mechanical treatment to remove a layer of tissue from the hard structure of the tooth, at a given zone affected by a disorder, and after removing the debris generated by such treatment, a layer of an adhesive substance is spread over the zone using an application head connected by a wire in a support handpiece to a control power circuit able to generate electrical signals which subject the given zone to a difference in potential which subjects the adhesive substance to an electrokinetic force due to the passage of an electrical current able to move the adhesive substance in an even and deep way inside dentinal tubules and so that it occupies the irregular surface of the tooth enamel.