The method of solving the damage of plastic woven bag

Abstract: plastic woven bags are widely used in all walks of life, because of its good tensile properties can carry and effectively protect the quality of products, to meet the needs of consumers Therefore, the woven bag body should not be easily damaged before normal use In this paper, the XLW (PC) intelligent electronic tensile testing machine independently developed by Labthink Languang is used to test the tensile properties of plastic woven bag samples, and through the description of the test process, equipment parameters, principles and other information, it provides a reference for enterprises to test the tensile strength properties of plastic woven bag Key words: plastic woven bag, damage, tensile property, flexibility, tensile strength, intelligent electronic tensile testing machine 1 Meaning plastic woven bag mainly includes polypropylene bag and polyethylene bag Its main production process is to use plastic raw materials to extrude film, cut and stretch one-way as flat wire, and then get products through warp and weft knitting At present, it is widely used in the packaging of food, daily necessities, fertilizer, chemical products, etc The flexibility of the plastic woven bag can be determined by testing the tensile strength (tensile strength) of the bag body, so as to verify whether the plastic woven bag meets the packaging requirements of the product If the tensile strength of the plastic woven bag is low, that is, the flexibility of the bag is poor, and the bag is easy to be damaged and leaked during the storage and circulation, which not only causes the leakage of the package content, but also reduces the life of the plastic woven bag Therefore, the manufacturer should strengthen the tensile strength test of the plastic woven bag Fig 1 all kinds of plastic woven bags 2 The test sample is the plastic woven bag provided by an enterprise 3 The test basis can refer to GB / T 1040.3-2006 plastics - Determination of tensile properties - Part 3: test conditions of film and sheet for the test standard of plastic woven bags 4、 Test equipment: XLW (PC) intelligent electronic tensile testing machine independently developed and designed by Ji'nan Languang Electromechanical Technology Co., Ltd Fig 2 4.1 test principle of XLW (PC) intelligent electronic tensile testing machine clip the sample between two collets of the fixture, the two collets do relative motion, through the force value sensor on the dynamic collet and the displacement sensor built in the machine, collect the force value change and displacement change in the test process, so as to calculate the tensile, tearing, deformation rate and other performance indexes of the sample 4.2 scope of application (1) this equipment can be used to test the tensile property, breaking force, tensile strength and deformation rate, tear resistance, puncture resistance, peel strength, heat sealing strength and other indexes of plastic film, composite film, thin film, woven bag and other materials; it can be used for puncture of infusion bag cover, soft rubber bottle plug and oral liquid cover/ It can be used to test the unwinding force of adhesive tape, the pressure resistance of plastic bottle, the opening force of combined cover, jelly cup, yoghurt cup cover film and other products and packaging performance (2) The equipment can meet the requirements of GB / T 10004, ISO 37, GB 8808, GB / T 1040.1, 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, ASTM E4, ASTM d882, ASTM D1938, ASTM d3330, ASTM f88 ASTM F904, JIS p8113, QB / T 2358, QB / T 1130 and other relevant standards at home and abroad 4.3 the force value sensors with equipment parameters of 500N and 50N can be selected According to the relevant standards, the equipment provides 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, which can be set freely according to the requirements of the test standards The ultra long stroke of 1000 mm can meet the test of materials with large deformation rate Intelligent configuration of limit protection, overload protection, automatic return and power failure memory can ensure the operation safety of users A testing machine integrates seven independent testing procedures, such as stretching, peeling, puncture and tearing, which provides users with a variety of test options Support Lystem TM laboratory data sharing system, and manage test results and test reports in a unified way 5 During the test (1) use the sample cutter to cut 5 samples with width of 50 mm and length of 200 mm along the horizontal and vertical directions of the plastic woven bag samples (2) The two ends of the sample shall be respectively clamped on the upper and lower chucks of the equipment, and the long axis direction of the sample shall coincide with the central line of the upper and lower clamps （3） Set test speed, sample width and other parameter information (4) Click the test start option to start the test The instrument automatically calculates and displays the final test results of Zui 6 Test results: the average transverse tensile strength (i.e tensile strength) of the plastic woven bag sample in this test is 386.507 n / 50mm; the average longitudinal tensile strength is 398.011 n / 50mm 7 Conclusion XLW (PC) intelligent electronic tensile testing machine is a professional testing equipment for the tensile properties of plastic woven bags, which has high testing accuracy, good repeatability of test results, and can truly reflect the flexibility of plastic woven bags Labthink Languang has always been committed to providing professional testing services and equipment for customers around the world, and providing customers with a large number of performance data references for packaging materials At the same time, provide customers with reliable technical solutions Labthink is looking forward to enhancing technical exchanges and cooperation with users in various industries