초록 ▼

A non-foil paperboard laminate having excellent flavor barrier with superior heat sealability comprises paperboard having a layer of a heat-sealable, modified polyolefin extrusion coated onto its outer surface, a layer of low density polyethylene polymer extrusion coated onto its inner surface, and

A non-foil paperboard laminate having excellent flavor barrier with superior heat sealability comprises paperboard having a layer of a heat-sealable, modified polyolefin extrusion coated onto its outer surface, a layer of low density polyethylene polymer extrusion coated onto its inner surface, and a product-contact barrier layer extrusion coated onto the inner layer of low density polyethylene polymer. The product-contact barrier layer may comprise one or more layers of a polymer having low permeability to flavor oils.

대표청구항 ▼

A paperboard container, the container being constructed from a lmainate comprising: (a) a paperboard substrate having opposed inner and outer surfaces; (b) a layer of heat-sealable, modified polyolefin copolymer of ethylene and ethylene-vinyl acetate coated onto the outer surface of said paperboard

A paperboard container, the container being constructed from a lmainate comprising: (a) a paperboard substrate having opposed inner and outer surfaces; (b) a layer of heat-sealable, modified polyolefin copolymer of ethylene and ethylene-vinyl acetate coated onto the outer surface of said paperboard substrate; (c) a layer of low density polyethylene polymer (LDPE) coated onto the inner surface of said paperboard substrate; and, (d) an inner, product-contact barrier layer coated onto said layer of low density polyethylene (LDPE), said barrier layer being selected from the group consisting of ethylene vinyl alcohol copolymer (EVOH), polyethylene terephthlate, polyethylene isophthalate, acid- or glycol- modified copolymers of polyethylene terephthalate and polyethylene isophthalate, polyamides, polycaprolactans and polycarbonates.