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    Home > Active Ingredient News > Drugs Articles > Overview of testing methods for oxygen transmittance of Causeway fired packaging

    Overview of testing methods for oxygen transmittance of Causeway fired packaging

    • Last Update: 2014-12-19
    • Source: Internet
    • Author: User
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    Abstract: the oxygen permeability of packaging is an important reference index for pastry enterprises to choose packaging materials If the compatibility between the oxygen permeability of packaging and the packaged pastry is poor, the quality of pastry products will be greatly threatened Taking the ox2 / 231 oxygen permeability tester developed by Jinan Languang mechanical and Electrical Technology Co., Ltd as an example, this paper introduces the detection method of the oxygen permeability of the soft plastic packaging, including the analysis of the test principle of the equipment, the description of the test process, etc., which provides a reference for the enterprises with the demand of the packaging oxygen resistance detection Key words: oxygen permeability, oxygen resistance, oxygen permeability tester, Causeway fire, pastry, moldy, soft plastic packaging, packaging container 1, meaning Causeway fire It is a kind of dessert with sandwich substances such as baked dough and bean paste inside It is named because its appearance is like the combination of two Causeway like cakes Its golden appearance is also called golden cake Gongshao is a kind of cake food which is sensitive to oxygen because of its rich nutrition and high fat content If Causeway burn is exposed to a large amount of oxygen in the storage or sales and other circulation links, it is easy to cause the oxidation of oil, protein and other components, the growth of microorganisms, resulting in Causeway burn with rancidity, harra and other bad flavor, and mildew spots on the surface Therefore, strict control of the oxygen content in the environment where Causeway burn is located is an important measure to reduce the probability of deterioration The oxygen permeability of the soft plastic packaging for Causeway firing is directly related to the oxygen content in the environment Therefore, the oxygen resistance of packaging materials is an important factor affecting the quality of Causeway firing within the shelf life Oxygen resistance is usually characterized by "oxygen permeability" The smaller the oxygen permeability is, the better the oxygen resistance of packaging materials is 2 At present, the common Causeway burning on the market mostly adopts the packaging form of plastic composite film At present, the test methods of oxygen transmittance are mainly divided into two kinds: isobaric method and differential pressure method The reference standards are GB / t19789-2005 coulometric method for oxygen permeability test of plastic film and sheet of packaging materials and GB / T 1038-2000 differential pressure method for gas permeability test of plastic film and sheet 3 Test sample a brand of Causeway burning packaging plastic composite film 4 In this paper, we use Labthink blue ox2 / 231 oxygen transmittance tester to test the oxygen transmittance of the sample 4.1 test principle the equipment adopts the test principle of equal pressure method, that is, during the test, the gas pressure in the test chamber on both sides of the sample is equal During the test, the sample is clamped between two test chambers, the oxygen of the test gas flows on one side of the sample, and the nitrogen of the carrier gas flows on the other side of the sample Under the action of oxygen concentration difference, oxygen molecules will diffuse through the sample to the nitrogen on the other side, and be carried to the sensor by nitrogen Through the analysis of oxygen concentration measured by the sensor, parameters such as oxygen transmittance of the sample can be calculated The equipment can also be used to test the oxygen permeability of packaging containers During the test, oxygen is surrounded on the outside of the container, while nitrogen flows in the container 4.2 scope of application (1) the equipment is applicable to the test of oxygen transmittance of film, sheet, container and other packages Film type includes all kinds of plastic film, plastic composite film, paper plastic composite film, coextrusion film, aluminum coating film, aluminum foil, aluminum plastic composite film and other film materials Sheet materials include all kinds of engineering plastics, rubber and other sheets, such as PP sheet, PVC sheet, PVDC sheet and so on Containers include bottles, bags, cans, boxes and barrels made of plastic, rubber, paper, paper plastic composite, glass, metal and other materials, such as Coke bottles, peanut oil barrels, Tetra Pak packaging, jelly cups, yogurt cups, three piece metal cans, toothpaste cartilage, cosmetics plastic packaging, etc (2) This equipment can meet many national and international standards, such as iso15105-2, GB / t19789, ASTM d3985, ASTM f2622, ASTM f1307, ASTM f1927, JIS k7126-2, ybb00082003, etc 4.3 test range of equipment parameters film and sheet samples is 0.01-1000cm3 / M 2 · D, resolution is 0.01cm3 / m2 · D; test range of container samples is 0.0001-10cm3 / PKG · D, resolution is 0.0001cm3 / PKG · D The device has wide range and high resolution The equipment is equipped with three test chambers, and the average value of three samples can be obtained in one test, which improves the test efficiency of the equipment The temperature control range of the equipment is 15 ~ 55 ℃, and the temperature control accuracy is ± 0.1 ℃; the humidity control range is 0% RH, 15% RH ~ 90% RH, 100% RH, and the humidity control accuracy is ± 1% RH It can meet the requirements of different test conditions of users Provide the standard membrane fast calibration to ensure the accuracy and universality of the test data Support Lystem Gamma Laboratory data sharing system, unified management of test results and test reports 5 During the test (1), use a sample cutter to cut 3 pieces of sample from the sample surface (2) Three pieces of samples are respectively pasted on three test chambers of the equipment to ensure that there is no bubble between the sample and the test chamber, and the sample clamping device is used for clamping (3) Set test parameters such as sample thickness, test temperature and humidity (4) Click the "start test" option to start the test (5) The instrument automatically tests the change of oxygen concentration during the test, and Zui finally calculates the oxygen transmittance of the sample and other test results 6 The results showed that the average oxygen permeability of the three samples was 44.3259 cm 3 / M 2 · D, which was good for the packaging of the composite film 7 Conclusion the oxygen resistance is an important reference index to investigate the applicability of Causeway burn packaging The ox2 / 231 oxygen transmittance tester used in this paper is a professional testing equipment for oxygen transmittance test, which has high test efficiency, accurate test results and can truly reflect the oxygen resistance of packaging materials In addition, ox2 / 231 oxygen transmittance tester can also be used to test the oxygen resistance of packaging containers, sheets, etc., to meet the test needs of customers for different types of samples In addition to the oxygen resistance of packaging, we should also focus on the sealing, heat sealing strength, friction coefficient and other properties of Causeway burning packaging To learn about the relevant testing equipment, you can log in Jinan Languang company to check the specific information of the equipment or call directly for consultation The more you understand, the more you trust! Jinan Languang Electromechanical Technology Co., Ltd is willing to take this opportunity to enhance technical exchanges and cooperation with enterprises and institutions in the industry.
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