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AssigneeTetra Laval Holdings & Finance S.A.
InventorsDaniele Golfieri, Franco Cani
Estimating the term…
An opening device for a package made of a sheet packaging material—said sheet packaging material comprising at least a first layer and a second layer, and having a hole formed through said first layer and sealed by a cover portion of said second layer—is made of plastic material molded onto said cover portion, and in turn comprises a spout defining a pouring opening and a wall portion closing said pouring opening, said wall portion defining, together with said cover portion, a user-removable sealing portion of said spout, a weakening region being interposed between said wall portion and said spout and said cover portion covering said weakening region; a molding apparatus for molding an opening device on a sheet packaging material is also disclosed.
Opening device molded on a sheet packaging material to be formed into a package having an interior, said sheet packaging material comprising at least a first layer and a second layer, and having a hole formed through said first layer and sealed by a cover portion of said second layer, said cover portion possessing first and second sides that are opposite one another, the first side of said cover portion facing towards the interior of the package when the sheet packaging material is formed into the package, said opening device being made of plastic material molded onto said cover portion, and in turn comprising a spout extending through said cover portion so as to project from both a first side of said cover portion and a second side of said cover portion, opposite to said first side and defining a pouring opening and a wall portion closing said pouring opening, the first side of the cover portion directly contacting a first side of the wall portion, the wall portion also possessing a second side opposite the first side, the second side of said wall portion facing towards the interior of the package when the sheet packaging material is formed into the package, said wall portion defining, together with said cover portion, a user-removable sealing portion of said spout, a weakening region being interposed between said wall portion and said spout, the weakening region being constituted by a recess defining a reduced thickness part possessing a thickness that is reduced relative to the thickness of the wall portion, the recess opening to the second side of the wall portion, wherein said cover portion covers said weakening region on the first side of the wall portion, and in that said cover portion extends up to an inner wall of said spout delimiting said pouring opening.
Opening device molded on a sheet packaging material to be formed into a package having an interior, the sheet packaging material comprising at least a first layer and a second layer, and having a hole formed through the first layer and sealed by a cover portion of the second layer, the opening device being made of plastic material molded onto the cover portion, and in turn comprising a spout extending through the cover portion so as to project from both a first side of the cover portion and a second side of the cover portion, opposite to the first side and defining a pouring opening and a wall portion closing the pouring opening, the cover portion possessing first and second sides that are opposite one another, the first side of the cover portion facing towards the interior of the package when the sheet packaging material is formed into the package, the first side of the cover portion directly contacting a first side of the wall portion, the wall portion also possessing a second side opposite the first side, the second side of the wall portion facing towards the interior of the package when the sheet packaging material is formed into the package, the wall portion defining, together with the cover portion, a user-removable sealing portion of the spout, a weakening region constituted by a reduced thickness part possessing a thickness that is reduced relative to the thickness of the wall portion adjacent the weakening region, the reduced thickness part constituting the weakening region being interposed between the wall portion and the spout, the reduced thickness part defining a base portion possessing the thickness that is reduced relative to the thickness of the wall portion adjacent the weakening region, the base portion being located closer to the first side of the wall portion than the second side of the wall portion, the cover portion covering the weakening region on the first side of the wall portion, and the cover portion extending up to an inner wall of the spout delimiting the pouring opening.
Dependencies are inferred from the claim text.