Abstract: A packaging material (41) and a process and apparatus for producing the same are disclosed herein, wherein an satisfactorily enhanced gas barrier property is intended to be provided using a grease-proof paper sheet (23). A first layer (16) is formed on an outer surface which will be directed outwardly, when a package or container will be formed from the packaging material, and a second layer (37) is formed on an inner surface which will be directed outwardly, when the package or container will be formed from the packaging material. A substrate and a grease-proof paper layer (23) are provided between the first layer (16) and the second layer (37). At least one of the first and-second layers (16) and (37) is formed from a polymer selected from the group consisting of polyolefins. The grease-proof paper layer (23) has a TAPPI value in a range of 100 to 400 seconds. A polymer is coated on at least one of surfaces of the grease-proof paper layer (23).

Abstract: A strip tape for a food product packaging container covering the inner side of a seam of the container formed of paper-based ply material blanks so as to improve a barrier feature on the same area. The tape includes a plurality of layers and at least one layer is a metal layer. The side edges of the metal layer arranged in a lengthwise direction of the tape remain interiorly so as not to reach the right and left sides of tape, so that the metal layer does not come into contact with the content of the container when attached on the seamed area of the container.