Aerosol-generating rod production using a curved and tapered contact surface

A method for producing an aerosol-generating rod, comprising:

• conveying a web material over a contact surface of a contact body such that the web material is in contact with the contact surface, wherein the contact surface is curved around an axial direction and tapered along the axial direction, and wherein a continuous portion of the contact surface spans at least an angle of 90 degrees around the axial direction;
• dispensing an additive through at least one additive dispensing opening provided in the contact surface;
• and
• conveying the web material through a converging device provided downstream of the contact body, wherein the web material is formed into a rod within the converging device.

A device for producing an aerosol-generating rod, comprising:

• an additive application assembly comprising a contact body defining a contact surface, wherein at least one additive dispensing opening is provided in the contact surface;
• a conveyor system configured to convey a web material over the contact surface such that the web material is in contact with the contact surface;
• and
• a converging device provided downstream of the additive application assembly,
• wherein the contact surface is curved around an axial direction,
• wherein the contact surface is tapered along the axial direction,
• wherein the additive application assembly further comprises a susceptor guide configured to guide a susceptor,
• wherein the susceptor guide extends beyond the contact body towards the converging device, and
• wherein the conveyor system is further configured to convey the web material through the converging device to form the web material within the converging device around the susceptor into the rod.