Packaging Machine For Producing Shrinkable Packages

Abstract

The invention relates to a packaging machine comprising a device for producing a deep-drawn plastic packaging tray and a welding device for welding a top foil to a packaging tray, wherein at least the packaging tray is made from a shrinkable plastic foil. A method for producing packages with the aid of at least one shrinkable foil is also disclosed.

1 . A packaging machine for producing a package with a thermoforming mold for producing thermoformed packaging trays from a shrinkable film web and with a sealing device with a lower mold and an upper mold for sealing a shrinkable upper film onto the packaging trays, characterized in that the thermoforming mold is cooled during the thermoforming and the lower mold and/or the upper mold are cooled during the sealing. 
     
     
         2 . The packaging machine as claimed in  claim 1 , characterized in that the lower mold has a cooling means. 
     
     
         3 . The packaging machine as claimed in  claim 1 , characterized in that the lower mold is vertically displaceable. 
     
     
         4 . The packaging machine as claimed in  claim 1 , characterized in that it has sealing means, which are heatable. 
     
     
         5 . The packaging machine as claimed in  claim 1 , characterized in that the upper mold has a cooling plate. 
     
     
         6 . The packaging machine as claimed in  claim 5 , characterized in that the upper mold has a cooling plate for each package to be produced. 
     
     
         7 . The packaging machine as claimed in  claim 1 , characterized in that the upper mold and/or the cooling plates is/are arranged such that they are vertically displaceable. 
     
     
         8 . The packaging machine as claimed in  claim 1  one, characterized in that it has a yoke sealing plate system, which is preferably arranged on the lower mold. 
     
     
         9 . The packaging machine as claimed in  claim 8 , characterized in that the yoke sealing plate system is cooled. 
     
     
         10 . The packaging machine as claimed in  claim 8 , characterized in that the yoke sealing plate system can be raised and lowered. 
     
     
         11 . The packaging machine as claimed in  claim 8 , characterized in that the yoke plate sealing system has a rubber abutment. 
     
     
         12 . The packaging machine as claimed in  claim 1 , characterized in that the thermoforming mold has cooling means. 
     
     
         13 . The packaging machine as claimed in  claim 1 , characterized in that the film web can be clamped between a holding means and the thermoforming mold. 
     
     
         14 . The packaging machine as claimed in  claim 13 , characterized in that the holding means can be cooled by cooling means. 
     
     
         15 . The packaging machine as claimed in  claim 1 , characterized in that the holding means is arranged such that it is vertically displaceable. 
     
     
         16 . The packaging machine as claimed in  claim 1 , characterized in that the thermoforming mold has a heating means, with which the film web can be heated up. 
     
     
         17 . The packaging machine as claimed in  claim 16 , characterized in that the heating plate is configured as a thermoforming die. 
     
     
         18 . The packaging machine as claimed in  claim 1 , characterized in that the thermoforming mold has vacuum and/or pressure means for thermoforming the film web. 
     
     
         19 . The packaging machine as claimed in  claim 1 , characterized in that the thermoforming mold has the vacuum and/or pressure means to improve the contact between the film web and the heating means. 
     
     
         20 . A method for producing a package by sealing an upper film onto a packaging tray, at least the packaging tray being produced from a shrinkable plastic film, characterized in that the film web is first partially heated up and is partially cooled before and during the thermoforming and in that the upper film and/or the packaging tray is cooled during the sealing of the upper film onto the packaging tray. 
     
     
         21 . The method as claimed in  claim 20 , the packaging tray and/or the upper film being produced from a shrink film, characterized in that the introduction of heat for the sealing is performed from the side of the package that is facing away from the shrink film. 
     
     
         22 . The method as claimed in  claim 20 , characterized in that the introduction of heat for the sealing is performed from above. 
     
     
         23 . The method as claimed in  claim 20 , characterized in that the shrinkable plastic film is preferably fixed by the sealing molds. 
     
     
         24 . The method as claimed in  claim 20 , characterized in that the shrinkable plastic film is fixed by the transporting chains. 
     
     
         25 . The method as claimed in  claim 20 , characterized in that the sealing mold that is facing the shrinkable plastic film is cooled. 
     
     
         26 . The method as claimed in  claim 20 , characterized in that the shrinkable plastic film is thermoformed before the sealing. 
     
     
         27 . The method as claimed in  claim 20 , characterized in that the package is shrunk after the sealing. 
     
     
         28 . The method as claimed in  claim 20 , characterized in that the film web is first partially heated up and is partially cooled before and during the thermoforming. 
     
     
         29 . The method as claimed in  claim 20 , characterized in that the film web is clamped before the thermoforming. 
     
     
         30 . The method as claimed in  claim 20 , characterized in that the packaging tray has a sealing region and in that this sealing region is cooled during the heating up and/or during the thermoforming. 
     
     
         31 . The method as claimed in  claim 20 , characterized in that the film web is deformed by positive and/or negative pressure. 
     
     
         32 . The method as claimed in  claim 20 , characterized in that each packaging tray is assigned a heating means. 
     
     
         33 . The method as claimed in  claim 20 , characterized in that the thermoformed film is cooled until there is no recovery. 
     
     
         34 . The packaging machine as claimed in  claim 9 , characterized in that the yoke sealing plate system can be raised and lowered. 
     
     
         35 . The packaging machine as claimed in  claim 4 , characterized in that the film web can be clamped between a holding means and the thermoforming mold. 
     
     
         36 . The packaging machine as claimed in  claim 7 , characterized in that the film web can be clamped between a holding means and the thermoforming mold. 
     
     
         37 . The packaging machine as claimed in  claim 35 , characterized in that the holding means can be cooled by cooling means. 
     
     
         38 . The packaging machine as claimed in  claim 14 , characterized in that the holding means is arranged such that it is vertically displaceable.