Packaging

Abstract

The invention relates to packages for materials or the mixture thereof, in particular for perishable products such as food or pharmaceutical products. The aim of said invention is to deliver means to make it possible to check the state of said for materials or the mixture thereof without destroying the package thereof. For this purpose, the inventive packaging comprises an optically sensitive element which is embodied in the form of a sensitive membrane or film or exhibits the properties thereof. As a result, the specific variations of the film thicknesses, scattered light variations, optical refractive index and spectral variations are used.

1 . A package for substances or mixtures of substances, characterized in that the package contains an optically sensitive element.  
   
   
       2 . The package according to  claim 1 , characterized in that a sensitive membrane or layer is present on the sensitive element or is the sensitive element.  
   
   
       3 . The package according to  claim 2 , characterized in that the membrane or layer is subject to specific layer thickness changes, scattered light changes, changes of optical refractive index, spectral changes.  
   
   
       4 . The package according to  claim 3 , characterized in that the layer thickness changes can be measured by the method of interferometry, surface plasmon resonance, spectroscopy.  
   
   
       5 . The package according to  claim 3 , characterized in that the layer thickness change is effected dependently on one of oxygen concentration, hydrocarbon concentration, hydrogen concentration, H 2 O content, and dependently on temperature or pressure.  
   
   
       6 . The package according to  claim 2 , characterized in that the membrane or layer contains one or more dyes or selective markers.  
   
   
       7 . The package according to  claim 2 , characterized in that state changes within the package are detectable by surface plasmon resonance, spectroscopy or luminescence changes on the membrane or layer.  
   
   
       8 . The package according to  claim 1 , characterized in that a marker or dye is changeable dependently on concentration (pH, O 2 ) or dependently on temperature or pressure.  
   
   
       9 . The package according to  claim 1 , characterized in that a detection is effected through the package without damaging the same.  
   
   
       10 . The package according to  claim 2 , characterized in that the membrane or layer is applied directly to the inner side of the package.  
   
   
       11 . The package according to  claim 2 , characterized in that the membrane or layer is fixed to an adhesive film adapted to be bonded into the package.  
   
   
       12 . The package according to  claim 2 , characterized in that the membrane or layer is connected to the package on or in a transparent element which is also fixable in a frame.  
   
   
       13 . The package according to  claim 1 , characterized in that the sensitive element is inserted into the package.  
   
   
       14 . The package according to  claim 2 , characterized in that calibration of the sensitive layer or membrane can be effected upon closing by at least one of vacuum or excess pressure, supply of gas, supply of calibrating liquid and temperature variation.  
   
   
       15 . The package according to  claim 2 , characterized in that a calibration of the sensitive layer or membrane can be effected by an external calibration before incorporation into the package.  
   
   
       16 . The package according to  claim 15 , characterized in that an external calibrating module is adapted to be calibrated by pressure changes.  
   
   
       17 . The package according to  claim 2 , characterized in that a sensitive membrane or layer has at least one of an optical, mechanical and chemical protective layer applied thereto.  
   
   
       18 . The package according to  claim 17 , characterized in that the protective layers are formed of by one of permeable metal, dielectric, PTFE or PTFE-base layers.  
   
   
       19 . The package according to  claim 17 , characterized in that the protective layers are formed of at least one of reflective and absorbent layers, in particular based on at least one of synthetic resins and acrylic.  
   
   
       20 . The package according to  claim 1 , characterized in that the package is transparent to electromagnetic waves or has a window transparent to electromagnetic waves.  
   
   
       21 . The package according to  claim 2 , characterized in that a membrane or layer indicates a fault or leak by color change without additional measuring technology.  
   
   
       22 . The package according to  claim 1 , characterized in that the sensitive element can detect multiparameters.  
   
   
       23 . The package according to  claim 22 , characterized in that the multiparameters are dependent on concentration, pressure, moisture or temperature.  
   
   
       24 . The package according to  claim 2 , characterized in that a sensitive membrane or layer has at least one piece of information applied thereto.  
   
   
       25 . The package according to  claim 2 , characterized in that a sensitive membrane or layer has a least one radio frequency identification (RFI) chip applied thereto or thereon.  
   
   
       26 . The package according to  claim 25 , characterized in that information is stored and retrievable by electromagnetic waves in the RFI.  
   
   
       27 . The package according to  claim 24 , characterized in that the information comprises calibrating data, batch information and identifications.  
   
   
       28 . The package according to  claim 2 , characterized in that the membrane or layer has a signal evaluation unit present thereon.  
   
   
       29 . The package according to  claim 28 , characterized in that measuring data, control messages are transferable by means of electromagnetic waves and an energy supply is thus effected.