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    Home > Active Ingredient News > Drugs Articles > How to control the quality of interlaminar compound fastness of liquid milk Tetra Pak

    How to control the quality of interlaminar compound fastness of liquid milk Tetra Pak

    • Last Update: 2017-03-29
    • Source: Internet
    • Author: User
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    Abstract: the barrier performance and physical and mechanical properties of liquid milk Tetra Pak pillow packaging will be directly affected by the composite fastness between layers of Tetra Pak pillow If the composite fastness of Tetra Pak pillow packaging is poor, it will directly cause the lamination of composite film packaging, resulting in the degradation of packaging performance, resulting in packaging quality and safety problems In this paper, XLW (EC) intelligent electronic tensile testing machine independently developed by Labthink Languang is used to test the peeling force of liquid milk Tetra Pak pillow packaging, so as to verify the composite fastness of TetraPak pillow packaging At the same time, the test process, test principle, equipment parameters and other contents are described in detail, which provides a reference for enterprises to inspect the composite fastness of packaging materials Key words: dairy products, liquid milk, Tetra Pak pillow, paper aluminum plastic composite film, plastic composite film, composite fastness, peel strength, peel strength, electronic tensile testing machine 1, significance Liquid milk contains a lot of fat and protein, which is prone to oxidative deterioration It needs to be packaged with high barrier packaging materials to ensure that the liquid milk will not be affected by oxygen and other substances in the external environment, which will lead to mildew, bulging and other deterioration The packaging of liquid milk is mainly in bags, boxes and bottles, among which the bags are mainly made of milk white film, black and white film, sterile pillow (Tetra Pak pillow) and other materials Tetra Pak pillow is a paper aluminum plastic composite film packaging made of polyethylene, paper, aluminum foil and other materials It has high barrier because of adding metal aluminum foil The packaging of liquid milk TetraPak pillow can meet the 45-90 day shelf life The composite fastness between the membranes of Tetra Pak pillow is an important factor affecting the overall barrier and physical and mechanical strength of Tetra Pak pillow The composite fastness can be expressed by peel strength or peel strength If the composite fastness between the layers is poor, it is easy to cause the lamination of the composite membrane, resulting in the decrease of the barrier property of the composite membrane and the serious decrease of the physical and mechanical strength, which is easy to cause the quality and safety problems of the finished product packaging Therefore, the enterprise shall strictly monitor the peel strength or peel strength between the layers to ensure the composite fastness Figure 1 Tetra Pak pillow packaging 2 At present, the domestic standard for peel strength or peel strength of composite film for packaging is mainly GB 8808-88 test method for peel strength of soft composite plastic materials 3 Test sample a brand of pure milk Tetra Pak pillow roll film 4 This paper uses the XLW (EC) intelligent electronic tensile testing machine developed by Labthink Languang to test the peel force and peel strength of samples Fig 2 XLW (EC) intelligent electronic tensile testing machine The average peeling force between the layers of the composite film is measured by the force sensor located on the dynamic fixture, that is, the peeling strength 4.2 scope of application (1) XLW (EC) The intelligent electronic tensile testing machine is applicable to the peeling force, peeling strength, tensile strength, breaking elongation, tearing, heat sealing strength of plastic film, composite material, soft packaging material, plastic hose, adhesive, adhesive tape, self-adhesive, medical paste, release paper, protective film, combination cover, metal foil, diaphragm, back plate material, non-woven fabric, rubber, paper and other products Adhesion, puncture force, opening force, tearing force, low speed unwinding force, peeling force, drawing force and other performance tests (2) XLW (EC) intelligent electronic tensile testing machine conforms to GB 8808, GB / T 1040.1-2006, GB / T 1040.2, GB / T 1040.3, GB / T 1040.4, GB / T 1040.5, GB / T 4850, GB / T 12914, GB / T 17200, GB / T 16578.1, GB / t 7122, GB / T 2790, GB / T 2791, GB / T 2792, GB / T 17590, ISO 37, ASTM E4, ASTM d882, ASTM D1938, ASTM d3330 ASTM F88 、 ASTM F904 、 JIS P8113 、 QB/T 2358 、  QB/T 1130 。 4.3 there are two test specifications of equipment parameters: 50N and 500N Customers can choose according to the test requirements The test accuracy of the equipment is better than 0.5, which can effectively ensure the accuracy of the test data The equipment supports the two-way test mode of tension and compression There are seven test speeds in the direction of tension and compression, which can be set by users themselves, namely 50 mm / min, 100 mm / min, 150 mm / min, 200 mm / min, 250 mm / min, 300 mm / min and 500 mm / min The equipment integrates eight independent test procedures, such as peeling, stretching, tearing, heat sealing, puncture resistance, etc., providing users with a variety of test options The equipment adopts the pneumatic sample clamping mode to prevent the sample from slipping and ensure the accuracy of the test data Intelligent configuration of limit protection, overload protection and automatic return ensures the operation safety of users Support Lystem TM laboratory data sharing system, realize unified management of test data 5 Test process (1) cut 5 samples with width of 15 mm and length of 200 mm along the transverse and longitudinal direction of the coil film of Tetra Pak pillow (2) at one end of the specimen, pre strip 50 mm manually along the length direction (3) clamp the two ends of the stripped part of the sample with the upper and lower clamps of the equipment, so that the long axis direction of the sample coincides with the center line of the two clamps (4) set test parameters such as test speed, width of sample, etc (5) click the test start option to start the test The equipment will automatically test the force value during the specimen peeling process and report the final test results of Zui 6 The results showed that the longitudinal peel force and the transverse peel force between the paper layer and the aluminum plastic layer were 7.354n and 7.156 n respectively 7 Conclusion XLW (EC) intelligent electronic tensile testing machine is a professional instrument for testing the peel strength and other properties of composite packaging such as plastic composite film and Tetra Pak pillow It has the advantages of simple operation, high data accuracy and truly reflects the composite fastness of composite film materials Labthink Languang has always been committed to providing professional testing services and testing equipment for customers around the world To learn about the testing equipment and technical information related to the key performance of dairy packaging materials, such as oxygen penetration, heat sealing strength, sealability, solvent residue, etc., you can visit Jinan Languang company or call Jinan Languang for consultation The more you understand, the more you trust! Labthink is looking forward to enhancing technical exchanges and cooperation with enterprises and institutions in the industry!
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