(19)
(11) EP 4 352 000 A1

(12)

(43) Date of publication:
17.04.2024 Bulletin 2024/16

(21) Application number: 22731654.4

(22) Date of filing: 03.06.2022
(51) International Patent Classification (IPC): 
B65H 19/10(2006.01)
B65H 19/12(2006.01)
 B65H 16/10(2006.01)
(52) Cooperative Patent Classification (CPC):
B65H 2406/1222; B65H 19/105; B65H 2301/41509; B65H 16/106; B65H 19/126; B65H 2513/11; B65H 2406/11325; B65H 2801/84; B65H 2511/14
 
C-Sets:
  1. B65H 2513/11, B65H 2220/01;
  2. B65H 2511/14, B65H 2220/01, B65H 2220/03;
(86) International application number:
PCT/EP2022/065151
(87) International publication number:
WO 2022/258504 (15.12.2022 Gazette 2022/50)
(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA ME
Designated Validation States:
KH MA MD TN

(30) Priority: 07.06.2021 IT 202100014702

(71) Applicant: A.CELLI PAPER S.P.A.
55012 Capannori (LU) (IT)

(72) Inventor:
  • TONELLO, Fabrizio
    55012 Capannori (LU) (IT)

(74) Representative: Mannucci, Michele et al
Ufficio Tecnico Ing. A. Mannucci S.r.l. Via della Scala, 4
50123 Firenze
50123 Firenze (IT)

   


(54) UNWINDER FOR WEB MATERIAL, PROVIDED WITH SYSTEMS FOR REDUCING DYNAMIC VACUUM DURING UNWINDING, AND RELATED METHOD