The present invention relates to a method for providing a product viewing window in a container. The container has at least a body ply and a liner ply, wherein the body ply has at least one aperture therethrough. The liner ply is adhered to the inner surface of the body ply and has a portion extending across the aperture, forming a window into the container. The method involves providing a window-finishing machine that comprises at least two platens and, optionally, a machine pocket positioned between them, a heating element extending through at least one of the platens, and a pressurized air device that is adapted to release pressurized air into the container through at least one of the platens. The container is engaged between the platens in an airtight manner and, optionally, the container window is positioned adjacent the inside wall of the machine pocket. The heating element heats the window of the container to the desired temperature, pressurized air is injected into the container such that the window is forced at least partially through the aperture of the container (and optionally into contact with the machine pocket wall), and the container window is then cooled to the desired temperature.

A method for producing a cardboard box comprising a rigid window made of a transparent material extending over at least two adjacent faces of the box includes the following steps: supplying a continuous width of rigid transparent plastic, the width of which corresponds to the deployed width of the window; forming in the continuous width of rigid transparent plastic a succession of longitudinal cuts distributed longitudinally with a spacing corresponding to the width of the window and laterally according to the widths of the adjacent faces.

A method for producing a cardboard box comprising a rigid window made of a transparent material extending over at least two adjacent faces of the box includes the following steps: supplying a continuous width of rigid transparent plastic, the width of which corresponds to the deployed width of the window; forming in the continuous width of rigid transparent plastic a succession of longitudinal cuts distributed longitudinally with a spacing corresponding to the width of the window and laterally according to the widths of the adjacent faces.

A container with a non-heat-seal window and a process for fabricating a low surface energy container with a non-heat-seal window. The process comprises forming a container template and cutting an opening in the container template. A window comprising a window stock material, a releasable liner, and an adhesive positioned between the window stock material and the releasable liner is sized to overlap the opening. A portion of the adhesive is exposed and the window is positioned over the opening. The window is then secured to the container template over the opening without the need to apply heat, and the container template is folded into the low surface energy container with the window.

A container with a non-heat-seal window and a process for fabricating a low surface energy container with a non-heat-seal window. The process comprises forming a container template and cutting an opening in the container template. A window comprising a window stock material, a releasable liner, and an adhesive positioned between the window stock material and the releasable liner is sized to overlap the opening. A portion of the adhesive is exposed and the window is positioned over the opening. The window is then secured to the container template over the opening without the need to apply heat, and the container template is folded into the low surface energy container with the window.

A method for manufacturing a package composed of two cardboard bases and a window extending on the lateral faces between the cardboard bases involves preparing cardboard cutouts by cutting out, from a sheet, two parts that correspond, respectively, to the shape of the first and second cardboard base joined together by separable connecting zones. The cutouts are placed on a conveyor belt. Pressing rollers are applied to the cutouts and one of the rollers in contact with one of the parts is slowed down with respect to the roller in contact with the other part in order to cause tearing of the separable zones. The two parts are repositioned by moving them apart by a distance corresponding to the height of the window. The window is deposited in order to bond the edges on the corresponding edges of the parts, which are thus repositioned.

An assembly for producing sealed packaging units (14) from a sheet packaging material, comprises: an advancement device (21) for advancing the sheet packaging material along an advancement direction (F), a longitudinal sealing device for sealing opposite borders of the sheet packaging material along a longitudinal sealing band arranged parallelly to the advancement direction (F), thereby forming a continuous tube (15), a transverse sealing device (29) for sealing the continuous tube (15) transversely to the advancement direction (F), so as to define a sealed packaging unit (14). The transverse sealing device (29) comprises a sealing element (30) and an abutment element (31) that are intended to mutually cooperate during sealing while being located on opposite sides of the continuous tube (15). The sealing element (30) is so configured as to act on a side (27) of the continuous tube (15) on which the longitudinal sealing band is provided.

The present invention provides methods and systems for applying a second-piece material to a paperboard cutout that includes a conveyor belt used for transporting the paperboard cutouts, a vacuum belt, at least two metering rolls, a first roller and second roller in a spaced apart and planar relationship, a nip roller positioned adjacent the second roller, and a cutting device. The vacuum belt proceeds over the first roller and the at least two metering rolls meter the second-piece material thereon, the vacuum belt proceeds through a valley between the first roller and second roller, at a predetermined time, the nip roller continues to pull the vacuum belt and the metering rolls pull back slightly and pulling the second-piece material taught and causing the second-piece material to contact the cutting device, and thus cutting the second-piece material.

The present invention provides methods and systems for applying a second-piece material to a paperboard cutout that includes a conveyor belt used for transporting the paperboard cutouts, a vacuum belt, at least two metering rolls, a first roller and second roller in a spaced apart and planar relationship, a nip roller positioned adjacent the second roller, and a cutting device. The vacuum belt proceeds over the first roller and the at least two metering rolls meter the second-piece material thereon, the vacuum belt proceeds through a valley between the first roller and second roller, at a predetermined time, the nip roller continues to pull the vacuum belt and the metering rolls pull back slightly and pulling the second-piece material taught and causing the second-piece material to contact the cutting device, and thus cutting the second-piece material.

The present invention relates to a method for providing a product viewing window in a container. The container has at least a body ply and a liner ply, wherein the body ply has at least one aperture therethrough. The liner ply is adhered to the inner surface of the body ply and has a portion extending across the aperture, forming a window into the container. The method involves providing a window-finishing machine that comprises at least two platens and, optionally, a machine pocket positioned between them, a heating element extending through at least one of the platens, and a pressurized air device that is adapted to release pressurized air into the container through at least one of the platens. The container is engaged between the platens in an airtight manner and, optionally, the container window is positioned adjacent the inside wall of the machine pocket. The heating element heats the window of the container to the desired temperature, pressurized air is injected into the container such that the window is forced at least partially through the aperture of the container (and optionally into contact with the machine pocket wall), and the container window is then cooled to the desired temperature.