초록 ▼

A container having a window for viewing the product contained therein and an associated method of manufacture is provided. The container is constructed of at least one body ply and a liner ply. The body ply defines at least one aperture therethrough such that when the body ply is wrapped into a tubu

A container having a window for viewing the product contained therein and an associated method of manufacture is provided. The container is constructed of at least one body ply and a liner ply. The body ply defines at least one aperture therethrough such that when the body ply is wrapped into a tubular shape the aperture forms a window through the body ply into the container. The liner ply extends across the aperture in the body ply and has a sufficiently low opacity that allows the product in the container to be viewed through the window. The liner ply provides a moisture and gas barrier inside the container around the product. The container may include a label ply. The label ply defines at least one aperture therethrough. The cutting of the at least one aperture in the label ply is registered. The body ply defines at least one aperture therethrough corresponding to the at least one aperture in the label ply. The body ply is wrapped around the previously wrapped liner ply on the mandrel and then the label ply is wrapped around the previously wrapped body ply and liner ply so that the apertures in the label ply are aligned with apertures in the body ply to create a tubular shape having a viewing window through both body plies.

대표청구항 ▼

1. A multi-ply tubular container having a window for viewing the product contained therein comprising:at least one body ply formed of a fibrous paperboard, said body ply being wrapped into a tubular shape having an inner surface and an outer surface, said body ply defining at least one aperture ther

1. A multi-ply tubular container having a window for viewing the product contained therein comprising:at least one body ply formed of a fibrous paperboard, said body ply being wrapped into a tubular shape having an inner surface and an outer surface, said body ply defining at least one aperture therethrough such that said aperture forms a window into the container; a liner ply adhered to the inner surface of said body ply and having a portion extending across said aperture, said liner ply comprised of a polymeric material having a low opacity which allows the product in the container to be viewed through the window; and a label ply adhered to the outer surface of said body ply and defining at least one aperture therethrough corresponding to said at least one aperture in said body ply, wherein said at least one aperture in said label ply has a diameter smaller than the diameter of said at least one aperture in said body ply.