Test method for adhesive effect of edge sealing of portable paper bags

Abstract: the edge of the hand-held paper bag is mostly glued by adhesive, and the bonding effect of each edge will directly affect the service life of the handbag In this paper, the portable paper bag of white spirit in a container produced by an enterprise is taken as the test sample, and the adhesive force value of its side sealing edge is detected by Labthink blue light XLW (m) intelligent electronic tensile testing machine, and the test process, test principle, equipment parameters and application scope are introduced, so as to provide a reference for the enterprise to monitor the adhesive effect of the portable paper bag sealing edge Key words: adhesion effect, adhesion value, adhesion strength, portable paper bag, edge sealing, intelligent electronic tensile testing machine 1, significance Most of the portable paper bags are made of high-quality paper and kraft paper They are simple, generous, and have good printability The printing patterns are exquisite They are often used as clothing paper bags, gift bags, food bags, wine bags, shopping bags, etc In the process of using portable paper bags, there are often cracks at the bottom or side edge of the bags, which seriously affect the service life of portable paper bags and the weight or quantity of the items that can be contained, and cause a waste of resources The phenomenon of easy cracking in the edge sealing of portable paper bags is mainly related to the poor bonding effect of the edge sealing Most of the edges of portable paper bags are sealed by adhesives If the durability of the adhesives used is poor, the temperature and humidity are relatively sensitive, and the adhesion on the surface of the paper bags is poor, the sealing cracks are easy to occur in the use of the portable paper bags Elephant Therefore, it is an effective way to reduce the cracking probability and improve the load-bearing capacity of the edge sealing of the portable paper bag to improve the bonding effect of the edge sealing and strengthen the detection of the bonding strength by selecting the appropriate adhesive, improving the sealing process (such as punching a needle hole in the edge sealing) 2 Test sample the test sample in this paper is a portable paper bag which is produced by an enterprise and used to carry the liquor in a box The adhesive strength of its side sealing edge is tested 3 According to the product standard QB / T 4379-2012 portable paper bags, the evaluation index of edge bonding effect in this standard is the sealing bonding strength, and the specific test process is carried out according to the constant speed tensile method in GB / T 12914-2008 paper and board tensile strength measurement 4 The testing equipment used in this test is XLW (m) intelligent electronic tensile testing machine, which is independently developed and produced by Jinan Languang Electromechanical Technology Co., Ltd 4.1 test principle bond strength test is the force required to strip a certain width of edge The equipment is equipped with two clamps, upper and lower The upper clamp can move up and down It is a dynamic clamp, and it is equipped with a powerful value sensor The lower clamp remains static During the test, the two free ends of the sample are clamped in the upper and lower clamps respectively, and then the peeling failure or tensile failure occurs along with the separation of the two clamps During the test, the force value sensor records the real-time force value generated when the sample breaks, so as to obtain the adhesive strength of the sample In addition, the device is equipped with a displacement sensor, which can be used to monitor the displacement change of the sample in real time during the test process, so as to obtain the deformation rate, elongation and other indicators 4.2 scope of application: Test of film packaging performance, such as adhesion strength, peel strength, tensile strength and deformation rate, tensile breaking force, heat sealing strength, puncture force, shear performance, etc Containers: puncture force and pull-out force of infusion bag cover, puncture / pull-out force of soft rubber bottle stopper, opening force of combination cover, tearing force, puncture / pull-out force of oral liquid cover, peeling force of hose cover, opening force of yoghurt cup and jelly cup cover film and other container packaging performance tests; others: pull-out force of toothbrush hair, pull-out force of contact lens, 90 ° of adhesive tape Performance test of products such as peeling force and unwinding force of adhesive tape Applicable standards: in addition to the above medical packaging standards, the equipment can meet more than 20 domestic and foreign standards such as ISO 137, GB 8808, GB / T 1040.1-2006 ~ GB / T 1040.4-2006, GB / T 1040.5-2008, GB / T 4850-2002, GB / T 12914-2008, QB / T 2358, ASTM E4, ASTM d882, ASTM D1938, etc 4.3 three ranges of equipment parameters 100 N, 200 N and 500 N are available for selection Seven test speeds of 50 mm / min, 100 mm / min, 150 mm / min, 200 mm / min, 250 mm / min, 300 mm / min and 500 mm / min are available for selection The sample is pneumatically clamped The stroke of the equipment is 600 mm It integrates seven independent test procedures such as stretching, peeling, tearing and heat sealing, which can meet different test requirements Support Lystem TM laboratory data sharing system, facilitate user management of test reports and test results 5 During the test (1), cut 5 samples with a width of 15 ± 0.1 mm from the side sealing edge of the bag sample, with a length of at least 300 mm, and make the bonding position of the side sealing edge in the middle of the sample (2) open the test equipment, set the test speed of 50 mm / min, sample width of 15 mm, sample number of 5 and other parameter information (3) adjust the initial distance of the fixture to 250 mm, take one of the specimens, and clamp the two ends of the specimen in the upper and lower clamps of the equipment, so that the long axis direction of the specimen is parallel to the center line of the two clamps (4) click the test option, the test starts, the upper fixture moves upward according to the set speed, the equipment displays the force value curve generated in the test process in real time, and automatically calculates and displays the adhesive strength test results of the tested sample after the end of the sample (5) repeat (3) and (4) until all 5 samples are tested 6 Results the bonding strength of the five side sealing samples was 34.152 n / 15mm, 35.041 n / 15mm, 36.514 n / 15mm, 36.091 n / 15mm and 37.026 n / 15mm respectively The average value of the five test results was 35.765 n / 15mm 7 Conclusion the adhesive strength of the edge sealing of the portable paper bag is an important factor to determine whether it is easy to crack in use To some extent, it determines the weight, quantity and volume of the product that the portable paper bag can hold, and it is related to the service life of the portable paper bag In this paper, XLW (m) intelligent electronic tensile testing machine is used to test the adhesive strength of the sample side sealing edge of the carrying wine bag produced by an enterprise The testing equipment is easy to operate and highly intelligent, the testing process is simple, the test results are repeatable, the testing accuracy is high, and the adhesive effect of the sealing edge of the portable paper bag can be accurately detected Labthink Languang is a high-tech enterprise specializing in the R & D and production of packaging testing equipment and packaging testing services It has always been committed to providing precise packaging testing equipment and intimate packaging testing services for customers all over the world At present, the packaging testing equipment developed covers the physical and mechanical properties of packaging such as barrier, impact resistance, puncture resistance, heat sealing performance, sealing performance and solvent Residue, evaporation residue and other health performance, to understand the relevant testing equipment, you can log in Jinan Languang company or call for consultation The more you understand, the more you trust! 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