A manufacturing device for a filler element includes a sheet processing section forms a crimped part on a sheet and a feed portion that continuously feeds an additive dropwise onto an upper face of the sheet having the crimped part. The feed portion includes a multiple nozzle in which a large number of feed outlets feeding the additive are arranged in the width direction.

A smoking tip filter with a central channel infused with consumable flavorants, surrounded by non-infused paper layers. A barrier prevents diffusion beyond the channel. Inserting into a smoking device flavors smoke via central channel contact only, without burning additives. Enables enjoyable tailored flavors; avoids harsh tastes or paper contamination.

Manufacturing machine and manufacturing method for the production of a filter for a tubular element for a smoking article. The following are provided: a folding drum which rotates around a rotation axis to move, along a circular folding path at least one holding head designed to accommodate a sheet having an inner portion and an outer portion; a feeding station where the holding head receives the sheet and engages the sole outer portion of the sheet leaving the inner portion of the sheet free; an insertion station where the holding head releases the sheet having the inner portion folded like a bellows; and a folding device which is arranged along the folding path between the feeding station and the insertion station and is configured to fold the inner portion of the sheet like a bellows. The holding head is mounted on the folding drum so as to radially translate outwards in the feeding station to receive the sheet and so as to radially translate outwards in the insertion station to release the sheet.