US 12,433,320 B2
Method and apparatus for manufacturing a crimped web
Stefano Zappoli, Bologna (IT)
Assigned to Philip Morris Products S.A., Neuchatel (CH)
Filed by Philip Morris Products S.A., Neuchatel (CH)
Filed on Jun. 30, 2023, as Appl. No. 18/345,522.
Application 18/345,522 is a division of application No. 15/521,640, granted, now 11,730,185, previously published as PCT/EP2015/075418, filed on Nov. 2, 2015.
Claims priority of application No. 14191555 (EP), filed on Nov. 3, 2014.
Prior Publication US 2023/0337715 A1, Oct. 26, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. A24B 13/00 (2006.01); A24B 15/10 (2006.01); A24D 3/02 (2006.01)
CPC A24B 13/00 (2013.01) [A24B 15/10 (2013.01); A24D 3/0204 (2013.01)] 8 Claims
OG exemplary drawing
 
1. An apparatus for manufacturing a crimped web for an aerosol-generating article, the apparatus comprising:
a set of crimping rollers comprising a first roller and a second roller, each of which is corrugated across at least a portion of a width thereof,
wherein the first and the second rollers are arranged such that corrugations of the first roller substantially interleave with corrugations of the second roller,
wherein pitch values of the corrugations of one or both of the first and the second rollers vary across the width of the rollers,
wherein the pitch values of substantially all of the corrugations of the first and the second rollers vary from about 0.5 mm to about 1.7 mm, and
wherein the apparatus includes at least one of:
each of at least some of the corrugations of the first and second rollers has an amplitude value that differs from an amplitude value of at least one directly adjacent corrugation of said corrugations, the amplitude values of the corrugations of the first and second rollers varying from about 0.1 mm to about 1.5 mm, and
each of at least some of the corrugations of the first and second rollers has a corrugation angle that differs from a corrugation angle of at least one directly adjacent corrugation of said corrugations, the corrugation angles of the corrugations of the first and second rollers varying from about 30 degrees to about 90 degrees.