The Ambient Oxygen Ingress Rate (AOIR) method, can measure the permeability of oxygen through films in finished packaging. The rate at which oxygen passes through a packaging film is a key factor for food products packaged under a modified atmosphere designed to exclude oxygen and inhibit the growth of microorganisms, thereby prolonging the shelf life of the product. Most existing techniques measure oxygen permeability of film before it has been incorporated into the package – where the process of heating, stretching and forming can affect the film’s properties.

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The Ambient Oxygen Ingress Rate (AOIR) method, can measure the permeability of oxygen through films in finished packaging. The rate at which oxygen passes through a packaging film is a key factor for food products packaged under a modified atmosphere designed to exclude oxygen and inhibit the growth of microorganisms, thereby prolonging the shelf life of the product. Most existing techniques measure oxygen permeability of film before it has been incorporated into the package – where the process of heating, stretching and forming can affect the film’s properties.

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The Hot Tack Tester is a highly sophisticated instrument for testing sealing properties of packaging material. It is being used in research and development as well as in SQC/SPC applications for raw materials; semi finished goods and finished packaging products.
The Hot Tack Tester permits evaluation of sealability and hot tack under a broad range of testing conditions to optimize packaging machine settings and to ensure consistent quality of the product. The instrument is also a practicable and helpful tool to packaging material manufacturers and end-users for incoming material inspection and for obtaining optimal production line speed. 

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An air flow which is temperature or air conditioned to achieve exactly the requested set values flows continuously through the test chamber. The air duct fitted to the chamber rear comprises all components required for air make-up. The chamber air is taken out of the test space by means of the recirculating air system, then it is passed via the fin-type heat exchanger where the chamber air is cooled down if necessary. An electrical heater installed in air flow direction behind the heat exchanger heats the recirculated air if required.

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