초록 ▼

A dual-ovenable container is formed from a blank of laminate material that includes a paperboard layer sandwiched between outer heat-sealable layers of amorphous polyester or heat-sealable cellophane. The blank is wrapped into a tubular or conical configuration and opposite edges of the blank form a

A dual-ovenable container is formed from a blank of laminate material that includes a paperboard layer sandwiched between outer heat-sealable layers of amorphous polyester or heat-sealable cellophane. The blank is wrapped into a tubular or conical configuration and opposite edges of the blank form a lap joint at which the edges are heat-sealed together to form a container body. End closures can then be applied to the ends of the container body. The laminate is heat-sealable to itself, is able to withstand heating/cooking conditions in both conventional and microwave ovens, and has a low oxygen permeability. The edge of the blank exposed to contents of the container can be wrapped by a sideseam tape in order to protect the edge.

대표청구항 ▼

What is claimed is: 1. A dual-ovenable container, comprising:a container body formed by a blank wrapped about an axis into a generally tubular or conical configuration with opposite edges of the blank overlapped and joined together by heat sealing to form a lap joint, the blank comprising a laminate

What is claimed is: 1. A dual-ovenable container, comprising:a container body formed by a blank wrapped about an axis into a generally tubular or conical configuration with opposite edges of the blank overlapped and joined together by heat sealing to form a lap joint, the blank comprising a laminate that comprises at least:a paperboard layer for structural rigidity and strength; anda pair of heat-sealable cellophane layers laminated to and sandwiching the paperboard layer therebetween and forming the opposite inner and outer surfaces of the container body;wherein the laminate has the structure A/B/C/B′/A′, where A and A′ comprise the heat-sealable cellophane layers, C comprises the paperboard layer, and B and B′ comprise adhesive layers, and wherein A and A′ each has the structure a/b/c/b/a, where “a” comprises a heat-seal layer, “b” comprises a tie layer, and “c” comprises a cellulose layer.