Method to test the performance of food vacuum packaging
method of testing the performance of food vacuum bag
(1) oxygen through the amount of food vacuum bag yu chang products relevant personage thinks, bad resistance capability of the vacuum food packaging even vacuum process is very successful, after the exposure in the air, the oxygen in air is easy to put back into the smoke into the vacuum packing bag, it loses the vacuum bag proper role. On the other hand, for some the contents of fragrance, air into aroma spillover and packaging will reduce the customer satisfaction of products. The standards specified, amount of oxygen through the test in accordance with the GB/T 1038 - 2000 plastic film and thin gas transmittance test method for differential pressure method, testing, testing the thermal cover toward the low voltage side. Labthink lincom VAC series differential pressure method of gas permeameter option is excellent, the indicators are better than national standards or the requirements of international standard, stable and reliable in performance. Gas through the detection function, but also unique diffusion coefficient, coefficient of permeability, solubility coefficient testing capabilities, meet the scientific research institutions and colleges and universities on the material of the blocking performance is analyzed and improved research needs. 2 food vacuum packaging of water vapor through the high performance products for some amount of dry, water vapor to make them by crisp tender, some of the fear of the frozen items in vacuum environment through their own breathing can form a relatively ideal temperature, if the outer packing water vapor resistance performance is not good, because the outside cold air invasion and frostbite. Yu chang products relevant personage thinks, we can according to the standard specified, the amount of water vapor through the test in accordance with the GB/T 1037 - 1988 plastic film and sheet of water vapour permeability test method for cup type act test, test conditions for temperature 38 & plusmn; 0. 6° C, relative humidity 90 & plusmn; 2%, when the test will be hot cover side toward the humidity is low. Labthink lincom W3/030 moisture permeability tester adopts high precision weighing sensor, improve test accuracy, shorten test time of osmotic balance in the process of judgment, and shorten the test time effectively. Secondly, the temperature and humidity control technology and weighing technology joint design and cooperate with the computer control technology, realize the test in the test environment weighing, without human intervention, the test process completely is not affected by the outside world, the test results more accurate, completely meet the requirements of aluminum foil high resistance materials moisture permeability test.
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