US 2006/0051537 A1 · Laminate and, paper container and package using the same

Abstract

The present invention relates to a laminate which has oxygen barrier property and flavor barrier property and which is excellent in sealing property and anti-delamination property, and to a paper container and a package utilizing the laminate and suitable for long term storage of contents and excellent in disposability. The laminate is characterized in that the same comprises a multi resin layer including at least three layers comprising adhesive resin layer (a)/barrier resin layer (b)/adhesive resin layer (a′) coextrusion laminated onto a base paper coated with polyethylene imine such that the adhesive resin layer (a) is contacted with the coated surface of the base paper, thereby enhancing an adhesion strength between the coextrusion laminated resin layer and the base paper, with lower odor and excellent barrier property.

Claims32

Dependent claims

A laminate comprising a multi resin layer including at least three layers comprising an adhesive resin layer (a), a barrier resin layer (b), and an adhesive resin layer (a′) coextrusion laminated onto a base paper coated with denatured polyethylene imine such that said adhesive resin layer (a) is contacted with said coated surface of said base paper, characterized in

that the denatured polyethylene imine is represented by the following formula I or formula II:
and
that said barrier resin layer (b) comprises ethylene-vinyl alcohol sopolymer:
wherein R1 and R3 each represent hydrogen, an alkyl group, alkenyl group, benzyl group, or a cyclic hydrocarbon residue.

1 more element

Dependencies are inferred from the claim text.

Laminate and, paper container and package using the same

Life of this patent

Laminate and, paper container and package using the same

Life of this patent

Abstract

Claims32