A paper cup of a dual structure according to one embodiment of the present invention comprises: an inner paper part having a plurality of diameter adjusting portions formed at predetermined angle intervals on one surface; a drink receiving part formed extending from one end of the inner paper part and bending formed into the inner portion of the inner paper part; and a drinking part formed at a boundary between the inner paper part and the drink receiving part and curled in a radially outward direction of the drink receiving part.

A paper cup of a dual structure according to one embodiment of the present invention comprises: an inner paper part having a plurality of diameter adjusting portions formed at predetermined angle intervals on one surface; a drink receiving part formed extending from one end of the inner paper part and bending formed into the inner portion of the inner paper part; and a drinking part formed at a boundary between the inner paper part and the drink receiving part and curled in a radially outward direction of the drink receiving part.

A manufacturing machine and a manufacturing method for the production of a tubular element, in particular for a smoking article. There are provided: an input conveyor, which moves at least one pocket along an input path; a wrapping conveyor, which moves at least one spindle, which has the shape of an inner cavity of the tubular element, along a wrapping path; a feeding station, where the pocket receives a wrapping sheet; and a transfer station, where the pocket releases the wrapping sheet to the spindle folding the wrapping sheet around the spindle into a U shape.

A manufacturing machine and a manufacturing method for the production of a tubular element, in particular for a smoking article. There are provided: an input conveyor, which moves at least one pocket along an input path; a wrapping conveyor, which moves at least one spindle, which has the shape of an inner cavity of the tubular element, along a wrapping path; a feeding station, where the pocket receives a wrapping sheet; and a transfer station, where the pocket releases the wrapping sheet to the spindle folding the wrapping sheet around the spindle into a U shape.

An apparatus for producing a frustoconical barrel body made of paper has a feeding station having a pulling assembly for unwinding paper at a preset unwinding speed, a substantially frustoconical drum operable in rotation around a rotation axis, and a fly cutting device upstream of the substantially frustoconical, suitable for cutting the paper into paper sheets without stopping or reducing the preset unwinding speed. A conveyor device allows sliding of the paper sheets from the feeding station towards the substantially frustoconical drum. A method for making the frustoconical barrel body by the apparatus is provided.

An apparatus for producing a frustoconical barrel body made of paper has a feeding station having a pulling assembly for unwinding paper at a preset unwinding speed, a substantially frustoconical drum operable in rotation around a rotation axis, and a fly cutting device upstream of the substantially frustoconical, suitable for cutting the paper into paper sheets without stopping or reducing the preset unwinding speed. A conveyor device allows sliding of the paper sheets from the feeding station towards the substantially frustoconical drum. A method for making the frustoconical barrel body by the apparatus is provided.