Verification method for anti-caries performance of milk powder aluminum-plastic composite film packaging
Abstract: The anti-caries properties of aluminum-plastic composite film packaging for milk powder play a decisive role in the shelf life of milk powder. In this paper, Labthink FDT-02 powder with a rubbing tester to test the anti-plastic composite film packaging kneading properties, and describes the contents of the basic test procedure and test equipment of the scope of application, and other parameters of the device, the choice of packaging companies rub-like Refer to the flexibility test equipment and verification methods. Key words: milk powder, aluminum-plastic composite film, shelf life, anti-caries performance, flexibility, flaw tester 1 , meaning Generally, the milk powder is mostly bagged with aluminum-plastic composite film, and the bagged milk powder is cost-effective and convenient to carry. Aluminum-plastic composite film is added with metal material aluminum foil, and the aluminum foil material itself is relatively brittle. Pinholes and creases are easy to occur in the production, processing or transportation of milk powder, which causes a certain extent on packaging barrier properties and physical and mechanical properties. The decline will prevent the oxidative deterioration and agglomeration of the milk powder during the shelf life. Therefore, the milk powder production enterprise should strengthen the detection of the anti-caries performance of the aluminum-plastic composite film packaging during the screening of the packaging materials. Figure 1 milk powder aluminum-plastic composite film packaging 2 , the implementation of standards At present, there is no targeted detection standard for domestic performance. Therefore, the test in this paper refers to ASTM F392-1993 (2004) "Test Method for Flexural Durability of Flexible Barrier Materials" to simulate the behavior of bismuth and crushing damage of aluminum-plastic composite film during production, processing and transportation. The anti-caries properties of the material were judged by detecting changes in the number of pinholes or changes in barrier properties before and after the crucible. 3 , test samples An aluminum-plastic composite film for milk powder provided by a milk powder company. 4 , test equipment Jinan Languang Electromechanical Technology Co., Ltd. independently developed and designed the FDT-02 æ‰æ“ tester. Figure 2 FDT-02 æ‰æ“ tester 4.1 Scope of application (1) This equipment is suitable for testing flexible film, composite film, coated film and paper. These include various aluminum-plastic composite films, composite films, aluminized films, nylon films, coated films, and papers for food and drug packaging. (2) This equipment meets international standards: ASTM F392 4.2 Equipment parameters 4.3 Sample preparation Except as otherwise specified in the sample requirements, the sample shall be taken in accordance with the provisions of GB 2918 before being tested , in an environment of temperature 23 ± 2 ° C , relative humidity 50 ± 5% RH , after at least 24 hours, cut three pieces The sample to be tested is 200 mm wide and 280 mm long . 5 , the test process (1) Fix the sample with a length of 280 mm and a width of 200 mm on the instrument with a pressure-sensitive double-sided tape of 10 to 12 mm width. (2) Set test parameters and select æ‰æ“ mode. (3) Close the instrument glass door and press the “TEST†button to start the test. (4) When the number of times the instrument has reached the set value, the instrument will automatically stop. Figure 3 test process 6 , test results The test results are evaluated by two methods: Figure 4 test results 7 , conclusion Through the test, it was found that the aluminum-plastic composite film sample showed a wide range of pinholes after the crucible, indicating that the aluminum-plastic composite film has poor flexibility, and it is easy to have creases or tiny pinholes in the package handling and sales process, resulting in excessive oxygen transmission. The sealing property is deteriorated. In order to ensure the product shelf life, the thickness of the aluminum foil material and the thickness of the adhesive used for the aluminum foil and the plastic are adjusted by detecting the anti-cracking property. FDT-02 æ‰æ“ tester is a test instrument for testing the anti-caries performance of plastic film, sheet and composite film. It is easy to operate and combines with oxygen transmission rate test system, water vapor transmission rate test system and sealing tester. The anti-cracking properties, barrier properties and sealing properties of the aluminum-plastic composite film before and after packaging were evaluated. Labthink has been committed to providing professional equipment and testing services to customers around the world, providing customers with a large number of packaging material performance data references. For more information you can visit Labthink company view device specific information or call us. Labthink is looking forward to sharing and cooperating with users in various industries. Another benefit of vitamins for the human body is that it can help the growth and development of the human body to operate normally, especially for teenagers, vitamins are one of the essential nutrients in the growth process. 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