Multilayer preform and container
AssigneeStora Enso OYJ
InventorCor Jansen
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Abstract
The present invention relates to a multilayer container preform and a multilayer container, said preform or container comprising a base, a body and a neck finish, said base and 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 the group consisting of a 2,5-furandicarboxylate polyester or co-polyester or a blend thereof, and said intermediate layer comprising a secondary material different from the primary material, but compatible with the primary material. The invention relates to methods of producing such a multilayer container preform and multilayer container
Claims21
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.
A multilayer container, said multilayer container comprising:
- a base, a body, and a neck finish,
- said base and 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, said secondary material compatible with the primary material, and,
- wherein the secondary material is a polyester.
A method of producing a multilayer container preform, the method comprising:
- providing 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 a secondary material different from the primary material, the second material compatible with the primary material, and wherein the secondary material is a polyester;
- co-injection molding the primary and secondary materials to form a body and base of the preform, said base and body comprising an outer layer defining an exterior surface, an inner layer defining an interior surface and interior space, said outer layer and said inner layer comprising the primary material, and an intermediate layer disposed between the outer layer and the inner layer, said intermediate layer comprising the secondary material.
Dependencies are inferred from the claim text.