(19)
(11) EP 3 579 988 A1

(12)

(43) Date of publication:
18.12.2019 Bulletin 2019/51

(21) Application number: 17896017.5

(22) Date of filing: 19.10.2017
(51) International Patent Classification (IPC): 
B21D 5/08(2006.01)
(86) International application number:
PCT/SE2017/000040
(87) International publication number:
WO 2018/147773 (16.08.2018 Gazette 2018/33)
(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:
MA MD

(30) Priority: 07.02.2017 SE 1700021

(71) Applicant: Ingvest AB
784 54 Borlänge (SE)

(72) Inventor:
  • INGVARSSON, Lars
    S-78454 Borlänge (SE)

(74) Representative: Bjerkéns Patentbyrå KB (Gävle) 
Box 1274
801 37 Gävle
801 37 Gävle (SE)

   


(54) METHOD AND ARRANGEMENT FOR ROLL-FORMING A PLANE PRODUCT WITH VARYING WIDTH