(19)
(11) EP 4 433 305 A1

(12)

(43) Date of publication:
25.09.2024 Bulletin 2024/39

(21) Application number: 22896479.7

(22) Date of filing: 17.11.2022
(51) International Patent Classification (IPC): 
B32B 27/06(2006.01)
B29C 48/08(2019.01)
 B32B 5/18(2006.01)
B65D 65/40(2006.01)
(52) Cooperative Patent Classification (CPC):
B29K 2105/04; B29C 48/07; B29C 48/10; B29C 48/21; B29C 48/29; B32B 5/18; B32B 2307/746; B32B 27/306; B32B 2266/025; B32B 2307/538; B32B 2307/7244; B32B 2307/7246; B32B 27/065; B32B 2307/72; B32B 2266/08; B32B 27/20; B32B 2307/7376; B32B 27/08; B32B 27/32
(86) International application number:
PCT/US2022/050276
(87) International publication number:
WO 2023/091585 (25.05.2023 Gazette 2023/21)
(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 ME MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA
Designated Validation States:
KH MA MD TN

(30) Priority: 18.11.2021 US 202117530407

(71) Applicant: MuCell Extrusion, LLC
Woburn, MA 01801 (US)

(72) Inventors:
  • SANIEI, Mehdi
    Belmont, MA 02478 (US)
  • LINDENFELZER, Mark, E.
    Milton, MA 02186 (US)
  • FREDRICKSON, Eric, V.
    Lancaster, MA 01523 (US)

(74) Representative: Carpmaels & Ransford LLP 
One Southampton Row
London WC1B 5HA
London WC1B 5HA (GB)

   


(54) MULTI-LAYER POLYMER FOAM FILM FOR PACKAGING APPLICATIONS AND THE METHOD OF MAKING THE SAME