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(11)

EP 3 956 133 A1

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(43) Date of publication: 23.02.2022 Bulletin 2022/08 (21) Application number: 20721707.6 (22) Date of filing: 17.04.2020

(51) International Patent Classification (IPC):  B29D 23/00(2006.01) F16L 9/127(2006.01) B29C 48/88(2019.01) (52) Cooperative Patent Classification (CPC): F16L 9/127; B29C 48/905; B29C 48/09; B29D 23/001 (86) International application number: PCT/GB2020/050970 (87) International publication number: WO 2020/212704 (22.10.2020 Gazette 2020/43)

(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: 17.04.2019 GB 201905432 (71) Applicant: Victrex Manufacturing Limited Tornton Cleveleys Lancashire FY5 4QD (GB)

(72) Inventors: MULLINEAUX, Nicholas Cleveleys Lancashire FY5 4QD (GB) SIMMONITE, James Cleveleys Lancashire FY5 4QD (GB) SIMPSON, Gayle Cleveleys Lancashire FY5 4QD (GB) SMALL, Geoff Cleveleys Lancashire FY5 4QD (GB) (74) Representative: Wilkins, Georgina Mary Heather  Victrex Manufacturing Limited Intellectual Property Department Victrex Technology Centre Hillhouse International Thornton Cleveleys FY5 4QD Thornton Cleveleys FY5 4QD (GB)