公开(公告)号：US20230031707A1

公开(公告)日：2023-02-02

申请号：US17789495

申请日：2020-11-11

Applicant: Philip Morris Products S.A.

Inventor： Massimiliano BERTOLDO ,  Matteo FRANCESCHI ,  Enrico GUIDOTTI ,  Luca NATALI ,  Ivan PRESTIA ,  Jerome UTHURRY ,  Dirk Guenter REIMANN

IPC: A24C5/01 ,  A24B15/12 ,  A24B3/14 ,  D21H25/12 ,  A24D3/02 ,  A24D3/04

Abstract: A method is provided to crimp a sheet having, before crimping, a thickness, a moisture, a composition, and a width, the method including: obtaining one pre-crimping sheet characteristic among the thickness of the sheet, the moisture of the sheet, the composition of the sheet, and the width of the sheet; crimping the sheet to form a plurality of corrugations on the sheet, the crimping including providing a pair of crimping rollers defining a nip therebetween, the nip having a nip size, and inserting the sheet in the nip; evaluating a post-crimping characteristic of the sheet after crimping; and varying the nip size on the basis of the obtained one of the pre-crimping sheet characteristic, and on the basis of the evaluated post-crimping sheet characteristic. An apparatus to crimp a sheet is also provided.