Detection scheme of composite fastness of jelly cup cover film

Abstract: the composite fastness of the jelly cup cover film is an important factor that affects the shelf life of the jelly and the convenience of eating, so it is necessary to strengthen the detection of the composite strength of the jelly cup cover film This paper uses Labthink blue light XLW (EC) intelligent electronic tensile testing machine to test the peel strength of the plastic composite film used for jelly cup sealing, and introduces the test process, test principle and equipment parameters, so as to provide reference for the composite fastness of the composite film used for enterprise monitoring Key words: jelly, composite film, covering film, lamination, composite fastness, peel strength, intelligent electronic tensile testing machine 1 Significance Jelly is a kind of dessert enjoyed by people for leisure and entertainment (separator) In order to maintain the good taste and flavor of jelly, plastic cup or aluminum-plastic composite film bag is generally used for packaging, which can ensure that the packaging of jelly products has good barrier performance and sealing performance The jelly packed in plastic cup usually uses plastic composite film material as the cover film to seal If the composite fastness between the single-layer films of the cover film is low, that is to say, the peeling strength between the single-layer films is low When the cover film is opened, the damage is not between the cover film and the cup body, but between the single-layer films of the cover film itself, which not only brings inconvenience to consumers, but also is easy to come out The existing layered cover film will reduce the barrier performance and physical and mechanical properties of the product, thus affecting the shelf life of the product Therefore, good composite fastness is one of the basic properties of the film covering materials Fig 1 jelly cup cover film 2 Composite film for a brand of jelly cup cover film of test sample 3 The test standard is in accordance with GB 8808-1988 test method for peel off of soft composite plastics 4 Test equipment in this paper, the XLW (EC) intelligent electronic tensile testing machine independently developed by Jinan Languang Electromechanical Technology Co., Ltd is used to test the peel strength of the composite film samples Fig 2 the fixture of XLW (EC) intelligent electronic tensile testing machine 4.1 test principle equipment is divided into upper and lower two parts The upper fixture can move according to preset speed, and the lower fixture remains fixed During the test, the two ends of the specimen are clamped in the upper and lower clamps respectively With the movement of the upper clamp, the specimen is peeled, stretched or torn The force value and displacement change caused by the change of the specimen are monitored by the force value sensor and displacement sensor respectively placed on the moving chuck According to the monitoring results, the peel strength, tensile breaking force, deformation rate and other properties of the specimen are calculated Yes 4.2 scope of application (1) This equipment is mainly used for peeling, stretching, deformation, tearing, heat sealing, bonding, puncture force, opening force, low-speed unwinding force and peeling of plastic film, composite material, soft packaging material, plastic hose, adhesive, adhesive tape, adhesive tape, 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) This equipment meets many 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 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 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 peeling, stretching, 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 During the test (1) cut 5 test strips with a width of 15 mm and a length of 200 mm along the transverse and longitudinal direction 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 (4) set the test speed, sample width and other parameter information, and click the test option to start the test (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 tested samples was 1.56 n / 15mm, 1.45 n / 15mm, 1.78 n / 15mm, 1.47 n / 15mm and 1.61 n / 15mm respectively, and the longitudinal peel strength was 1.89 n / 15mm, 1.93 n / 15mm, 2.16 n / 15mm, 2.12 n / 15mm and 1.93 n / 15mm respectively 7 Conclusion the XLW (EC) intelligent electronic tensile testing machine used in this paper is a professional testing equipment for peel strength of jelly cup closure film, which has the advantages of simple operation, high intelligence, accurate testing results and high testing accuracy It can truly reflect the composite fastness of the jelly cup cover film material In addition to the peel strength of the cover film, the overall sealing performance and barrier performance of the product should also be paid attention to Labthink Languang is a high-tech enterprise specializing in the research and development and production of packaging testing equipment Through continuous innovation of technology, it has always provided customers with advanced packaging testing equipment and intimate packaging testing services The existing customers have covered many fields such as packaging material production, food, medicine, automobile, daily chemical, textile, University, third-party testing agency, etc The more you understand, the more you trust! Labthink is willing to enhance technical exchanges and cooperation with enterprises and institutions in the industry.