Thermoforming packaging machine, method and packaging

Abstract

The invention relates to a method, a thermoforming packaging machine and a packaging with a hinged lid that is produced according to the method or by means of the thermoforming packaging machine.

What is claimed is: 
     
         1 . Method for operating a thermoforming packaging machine, said method comprising the steps of:
 forming a trough into a first film web in a forming station;   creating a flange surface that at least partially surrounds the trough;   creating a cutting line into the first film web within the flange surface in a cutting station that is disposed in a processing direction downstream of the forming station;   creating an internal sealed seam between the flange surface and a second film web in a first sealing station that is disposed downstream of the cutting station in order to place the second film web onto the flange surface, wherein the internal sealed seam is created between the trough and the cutting line; and   creating an external sealed seam between the second film web and the flange surface, wherein the external sealed seam is created outside of the cutting line.   
     
     
         2 . Method according to  claim 1 , wherein the cutting line is U-shaped 
     
     
         3 . Method according to  claim 1 , wherein the internal sealed seam and the external sealed seam are created together in the first sealing station. 
     
     
         4 . Method according to  claim 1 , wherein the external sealed seam is created in a second sealing station that is disposed downstream from the first sealing station. 
     
     
         5 . Method according to  claim 1 , wherein the external sealed seam is U-shaped. 
     
     
         6 . Method according to  claim 1 , wherein the external sealed seam is a non-detachable connection and the internal sealed seam is a detachable connection between the first film web and second film web. 
     
     
         7 . Thermoforming packaging machine comprising:
 a forming station for thermoforming a trough into a first film web;   a first sealing station including an internal sealing tool that is configured to create an internal sealed seam between the cutting line and the trough in the flange surface;   a cutting station disposed between the forming station and the first sealing station, wherein the cutting station includes a cutting tool to create a cutting line within a flange surface that surrounds the trough; and   an external sealing tool that is configured to create an external sealed seam outside of the cutting line in the flange surface.   
     
     
         8 . Thermoforming packaging machine according to  claim 7 , wherein the cutting tool has a cutting edge with a U-shaped course. 
     
     
         9 . Thermoforming packaging machine according to  claim 7 , wherein both the internal sealing tool and the external sealing tool are provided in the first sealing station. 
     
     
         10 . Thermoforming packaging machine according to  claim 7 , wherein the external sealing tool is provided in a second sealing station that is disposed downstream of the first sealing station. 
     
     
         11 . Packaging manufactured according to the method of  claim 1 . 
     
     
         12 . Packaging comprising:
 a trough formed in a first film web;   a flange surface that at least partially surrounds the trough;   a U-shaped cutting line for fled into the flange surface;   a closed and gas-tight internal sealed seam created between the trough and cutting line; and   an external sealed seam created outside of the cutting line.   
     
     
         13 . Packaging according to  claim 12 , wherein the external sealed seam is a non-detachable connection and the internal sealed seam is a detachable connection between the first film web and second film web. 
     
     
         14 . Packaging according to  claim 12  further comprising a straight, non-detachable sealed seam created on a side of the flange surface having no cutting line in order to form a hinge for the hinged lid, wherein the hinged lid is formed of a part of the flange surface that is located outside of the cutting line and the second film web.