The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 22, 2022
Filed:
Apr. 13, 2018
Philip Morris Products S.a., Neuchatel, CH;
Stefano Zappoli, Bologna, IT;
Philip Morris Products S.A., Neuchatel, CH;
Abstract
The invention relates to a method or apparatus () for crimping a sheet () of material The apparatus comprises a transport device to transport the sheet of material along a transport direction (), and a set of crimping rollers (). The set comprises a first () and a second () main crimping roller, defining a first () and a second () rotational axis and being faced one in front of the other, the first roller including a first plurality of ridges () across a portion of its width (), and the second roller having a second plurality of ridges () across a portion of its width; and a pre-crimping roller facing the first roller and having a third plurality of ridges across a portion of its width, the pre-crimping roller having a diameter smaller than a diameter of the first and second main roller.