Process and device for preparing a packaging blank and packaging prepared by such blank
AssigneePhilip Morris Incorporated
InventorMaurice Copin
Life of this patent
Estimating the term…
Abstract
Packaging, particularly for a carton of cigarette packs, includes opening structure permitting easy access to one or more of the objects or packs of cigarettes which it contains. The opening structure includes a line of pre-weakened resistance, comprising pre-cuts, either passing completely through the material constituting the packaging or incompletely through the thickness of that material. Individual pre-cuts may be separated by interconnected attachment portions. The line of weakened resistance may partially or completely surround a surface disposed on one, two, or three faces of the packaging. Structure for starting the opening may be provided. A process and a device permitting such packaging are also disclosed.
Claims35
A process of preparing an opening structure on a packaging blank which permits easy access to rigid objects contained in the packaging blank when wrapped around the rigid objects, comprising the steps of:
- providing a sheet of paper or polypropylene material as the packaging blank, said sheet having periodic markings thereupon;
- producing a line of weakened resistance at the opening structure by means of a pre-cutting device synchronized with the periodic markings upon the sheet.
An apparatus for preparing an opening structure on a carton, said carton being formed from a sheet of paper or polypropylene material, comprising:
- a means for periodically advancing the sheet,
- a pre-cutting die actuable during a period of time when the sheet is not moving, said die pressing on the sheet to form a line having weakened resistance to tearing thereupon, the pre-cutting die being driven by a first actuator and the means for periodically advancing the sheet being driven by a second actuator, the first and second actuators being controlled independently of each other by a controller.
A device for preparing an opening structure on a carton formed from a sheet of paper or polypropylene material, the device comprising:
- a transport device for moving the sheet in a longitudinal direction;
- a sensing device comprising at least one sensor for sensing a periodic marking on the sheet;
- a pre-cutting device pressing an opening structure on the sheet, said pre-cutting device and transport device being controlled by a controller in response to the sensing device, the pre-cutting device being driven by a first actuator and the transport device being driven by a second actuator, the first and second actuators being controlled independently of each other by the controller.
Dependencies are inferred from the claim text.