The introduction of the test method for peeling strength of the aluminized composite film for medicine packaging

Abstract: peel strength is a physical quantity reflecting the composite fastness of composite membrane materials, and an important performance index of composite membrane materials In this paper, taking the process of testing the peeling strength of aluminum-plated composite film of pharmaceutical packaging by Labthink XLW (EC) intelligent electronic tensile testing machine as an example, the monitoring method, test principle, equipment parameters and other information for testing the composite fastness of soft plastic packaging are introduced, which provides a reference for enterprises to monitor the heat sealing strength of packaging and select the corresponding testing equipment Key words: composite fastness, peel strength, intelligent electronic tensile testing machine, medicine, aluminized composite film, soft plastic packaging, layering 1, significance Composite membrane materials are composed of two or more layers of single-layer membrane by dry composite, extrusion composite and other composite processes The performance of each single-layer membrane is complementary, which greatly improves the barrier performance, physical and mechanical properties of the composite membrane The composite fastness of each single-layer film has a great influence on the performance of the composite film If the composite fastness is low, delamination is easy to occur, which not only affects the appearance of the drug packaging, but also causes the mutual reinforcement between the single-layer films to weaken, resulting in the decrease of the barrier and physical and mechanical properties of the composite film In addition, if the peel strength of the packaging is low, the composite fastness is poor, during the tearing process of the packaging bag In addition, it is easy to appear delamination, that is, the tearing performance of the packaging bag is poor, which affects the drug intake Therefore, it is of great significance to strengthen the monitoring of the composite fastness of composite membrane materials 2 At present, the composite film materials for drug packaging include plastic composite film, aluminum coated composite film, aluminum plastic composite film, etc the test of peel strength of these materials mainly refers to ybb00132002 general principles for composite film bags for drug packaging 3 The test sample is aluminum-plated composite film for a certain brand of drug packaging Fig 1 aluminized composite film, bag 4, testing equipment this paper uses XLW (EC) intelligent electronic tensile testing machine independently developed and designed by Jinan Languang Electromechanical Technology Co., Ltd to test the peel strength of aluminized composite film samples Fig 2 the fixture of 4.1 test principle equipment of XLW (EC) intelligent electronic tensile testing machine is divided into two parts: upper and lower The upper fixture can move at preset speed, and the lower fixture remains fixed During the test, the two ends of the sample are clamped in the upper and lower clamps respectively With the movement of the upper clamp, the sample is damaged by stretching, peeling or tearing The force value and displacement change caused by the change of the sample are monitored by the force value sensor and displacement sensor on the moving clamp head respectively According to the monitoring results, the tensile breaking force, deformation rate, peeling strength and other properties of the sample are calculated Yes 4.2 scope of application (1) This equipment is mainly used for stretching, stripping, deformation, tearing, heat sealing, adhesion, puncture force, opening force, low-speed unwinding force and stripping of plastic film, composite material, soft packaging material, plastic hose, adhesive, adhesive tape, 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 Opening force and other performance tests, such as the tearing force of the oral liquid cap, puncture / pull-out force, puncture force of the infusion bag cap, puncture / pull-out force of the soft rubber bottle plug, etc (2) the equipment meets a number of national and international standards, such as GB 8808, GB / T 1040.1 ~ GB / t1040.4, GB / T 1040.5, GB / T 4850, GB / T 12914, ybb00132002, ISO 37, ASTM E4, ASTM d882, JIS p8113, QB / T 2358, QB / t 1130, etc 4.3 there are two test specifications for 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 freely by users, 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 stretching, peeling, tearing and heat sealing, and provides 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 to realize unified management of test data 5 Test step (1) cut 5 test strips with a width of 15 mm and a length of 200 mm along the transverse and longitudinal directions of the sample (2) Each strip is pre peeled by hand for 50 mm (3) The two ends of the stripped part of the sample are respectively clamped in the upper and lower clamps of the equipment, and the longitudinal axis of the stripped part of the sample coincides with the center line of the upper and lower clamps Fig 3 sample clamping process (4) set the test speed, sample width and other parameter information, click the test option, and the test starts (5) The equipment automatically detects the change of the force value during the test, and calculates and displays the final peel strength value of the sample Zui according to the detected data 6 The results showed that the transverse peel strength of the samples was 1.06 n / 15mm, 1.13 n / 15mm, 1.09 n / 15mm, 1.11 n / 15mm and 1.04 n / 15mm respectively, and the longitudinal peel strength was 1.21 n / 15mm, 1.19 n / 15mm, 1.25 n / 15mm, 1.17 n / 15mm and 1.23 n / 15mm respectively 7 Conclusion from the above test process, it is not difficult to see that XLW (EC) intelligent electronic tensile testing machine has the advantages of simple test operation, high intelligence, accurate test results and high test accuracy in detecting the peel strength of composite films XLW (EC) intelligent electronic tensile testing machine is a widely used testing equipment, which can be used not only to test the peel strength of composite film of pharmaceutical packaging, but also to test the tensile properties, puncture force, drawing force, opening force and other properties of packaging bag, infusion bag cover, bottle stopper, etc., with high cost performance Labthink Languang has always been committed to providing professional testing equipment and services for customers all over the world The testing equipment developed and produced almost covers all aspects of performance testing of soft plastic packaging To learn about the relevant testing equipment information, you can log in Jinan Languang company to check or directly call for consultation Labthink is looking forward to enhancing technical exchanges and cooperation with enterprises and institutions in the industry!