	US 12,246,876 B2
	Multilayer preform and container
Cor Jansen, Rijen (NL)
Assigned to Stora Enso OYJ, Helsinki (FI)
Appl. No. 17/996,938
Filed by Stora Enso OYJ, Helsinki (FI)
PCT Filed May 10, 2021, PCT No. PCT/IB2021/053950 § 371(c)(1), (2) Date Oct. 24, 2022, PCT Pub. No. WO2021/229407, PCT Pub. Date Nov. 18, 2021.
Claims priority of application No. 2050546-7 (SE), filed on May 11, 2020.
Prior Publication US 2023/0166881 A1, Jun. 1, 2023
Int. Cl. B65D 1/02 (2006.01); B29C 49/22 (2006.01); B32B 1/00 (2006.01); B32B 27/08 (2006.01); B32B 27/36 (2006.01); B29C 45/16 (2006.01); B29C 49/10 (2006.01); B29K 67/00 (2006.01); B29L 31/00 (2006.01)

CPC B65D 1/0215 (2013.01) [B29C 49/22 (2013.01); B32B 1/00 (2013.01); B32B 27/08 (2013.01); B32B 27/36 (2013.01); B29C 45/164 (2013.01); B29C 49/10 (2013.01); B29K 2067/003 (2013.01); B29L 2031/7158 (2013.01); B32B 2250/03 (2013.01); B32B 2250/244 (2013.01); B32B 2439/60 (2013.01)]

21 Claims

1. A multilayer container preform, said preform comprising:

a base, a body, and a neck finish,

said base and said body comprising an outer layer defining an exterior surface, an inner layer defining an interior surface and interior space, and an intermediate layer disposed between the outer layer and the inner layer,

said outer layer and said inner layer comprising a primary material selected from a group consisting of a 2,5-furandicarboxylate polyester or a 2,5-furandicarboxylate co-polyester or a blend thereof, and

said intermediate layer comprising a secondary material different from the primary material, the secondary material compatible with the primary material,

wherein the secondary material is a polyester.