(19)

(11)

EP 3 934 825 A1

(12)

(43) Date of publication: 12.01.2022 Bulletin 2022/02 (21) Application number: 20711244.2 (22) Date of filing: 11.02.2020

(51) International Patent Classification (IPC):  B21D 47/00(2006.01) B32B 3/12(2006.01) F28F 1/12(2006.01) F28F 1/38(2006.01) B21D 53/08(2006.01) F28F 1/30(2006.01) F28F 1/34(2006.01) (52) Cooperative Patent Classification (CPC): F28F 2215/00; B32B 3/26; F28F 1/30; F28F 1/38; F28F 1/34; F28F 1/126; B21D 53/085; B32B 2457/00; B21D 39/06; B32B 3/08; B32B 3/12; F28F 2275/127; F28F 2255/12 (86) International application number: PCT/GB2020/050303 (87) International publication number: WO 2020/183124 (17.09.2020 Gazette 2020/38)

(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: 08.03.2019 GB 201903145 (71) Applicant: Encocam Limited Cambridgeshire PE29 6EF (GB)	(72) Inventor: GUTHRIE, Julian Maxwell Peterborough, Cambridgeshire PE2 8HF (GB) (74) Representative: Evens, Paul Jonathan et al Maguire Boss 24 East Street St. Ives, Cambridgeshire PE27 5PD St. Ives, Cambridgeshire PE27 5PD (GB)