Abstract : Bursting pressure is the physical quantity that detects the impact of a package's resistance to internal gas shocks or falls. It is an important indicator of whether a package is likely to break during the process of product packaging. In this article, butterfly crispy packaging is taken as an example. The LSSD-01 leakage and seal strength tester independently developed by Jinan Languang Electromechanical Technology Co., Ltd. is used to test its bursting pressure. The test principle of the equipment and the entire test process are introduced to monitor the packaging of the enterprise. Bursting pressure provides a practical solution.
Keywords : burst pressure, pressure resistance, leak and seal strength tester, soft plastic packaging, butterfly cake, pastry, bag break
1 , the meaning
In the circulation of the finished product packaging, such as transportation and sales, the bags are easily squeezed or squeezed by other external forces or easily dropped from the storage position. When the bag is squeezed or dropped, the bag interior The gas will have a certain impact on the packaging bag body or the heat sealing edge. If the impact resistance of the packaging bag is poor, the packaging bag is easily broken at the bag body or the heat sealing edge. The strength of the bag against the internal gas impact can be characterized by the burst pressure index.
Butterfly Crisp is known for its appearance like a butterfly, also known as " palm leaves " and " like ears " . It has a crisp and fragrant taste and is sweet and delicious. It is a favorite pastry product. In this paper, we test the burst pressure of butterfly cake packaging to verify its resistance to internal gas impact.
2 , the status quo
Butterfly cake commonly used packaging materials are mainly plastic composite film and aluminum composite film two types. At present, there is no standard for the execution of soft plastic package blasting pressure test in China. The testing process mainly refers to the American Standard ASTM F1140/F1140M-2013 “Test Method for Resistance to Internal Pressurized Damage of Unconstrained Packagingâ€.
Figure 1 butterfly package common packaging form
3 , test sample
A brand of butterfly cake packaging plastic composite film packaging bag.
4 , testing equipment
This article uses the Labthink blue light LSSD-01 leak and seal strength tester to detect the burst pressure of the butterfly crisp package sample.
Figure 2 LSSD-01 Leakage and Sealing Strength Tester
4.1 Test principle
The equipment is designed using the positive pressure test principle, that is, the gas pressure inside the sample is greater than the outside. By filling the inside of the package with a certain amount of gas and monitoring the pressure change in the package in real time until the packaging bag breaks, the pressure value tested when the package breaks is the burst pressure of the package, or the gas is filled into the sample. Specify the pressure and then place the sample in water or otherwise check the sample for leaks. Under the impact of the gas inside the package, the weaker link of the package first cracks or leaks. Therefore, the place where the bag ruptures or leaks can be inferred to be weaker.
4.2 Scope of application
It is applicable to the determination of sealing strength, heat sealing quality, and burst pressure and seal leakage performance of various heat sealing edges for various heat sealing and bonding processes, such as flexible packages and aseptic packaging. Applicable to the quantitative testing of the sealing performance of various plastic anti-theft caps, such as Coke caps, mineral water bottle caps, beverage caps and so on. Applicable to a variety of hoses, such as the overall sealing performance, pressure strength, strength of the cap connection, the strength of the tripping, heat sealing edge sealing strength, tie strength and other indicators of the quantitative determination, such as toothpaste tube, face cream and other washing supplies Packaging hoses, various types of medical ointment tubes and other areas of packaging hose. Applicable to the compressive strength, bursting strength and other indicators of the materials used in flexible packaging bags, bottle cap torque sealing index, cap connection connection strength, material stress strength, and the entire bottle body sealing, pressure resistance, resistance to breaking Sexual indicators are evaluated and analyzed. Meet a number of national and international standards, such as ISO 11607-1 , ISO 11607-2 , GB/T 10440 , GB 18454 , GB 19741 , GB 17447 , ASTM F1140 , ASTM F2054 , GB/T 17876 , BB/T 0025 , YBB00252005 Wait.4.3 Equipment Parameters
The testing range of the equipment is 0 ~ 600 KPa . Through special customization, the testing range can be increased to 0 ~ 1.6 MPa to meet the test requirements of different samples. Swelling inhibition, expansion non-inhibition double test method, the user can freely choose according to different test purposes. Various test modes such as rupture test, creep test, creep to rupture test, etc. meet the test needs that users do not use. LystemTM laboratory data sharing system is supported to manage test results and test reports.5 , test steps
(1) Carefully insert the device's probe into the center of the butterfly pastry bag sample, and ensure that the seal near the insertion point is good and that no air leakage occurs.
(2) Start the test and adjust the flow rate valve to control the pressure rate so that the gas is slowly filled into the sample and the sample expands until it ruptures or leaks.
Figure 3 test process diagram
(3) Record the pressure at which the sample breaks or leaks, and record the location of the rupture or leak.
6 , test results
A total of 3 bags of samples were tested in this test . The burst pressures of the samples were 20.5 KPa , 31.9 KPa , and 33.4 KPa , respectively, and they all cracked at the back edge of the sample.
7. Conclusion
LSSD-01 Leakage and Sealing Strength Tester is a professional testing device for testing the burst pressure of soft plastic packaging. It can truly reflect the breaking strength of the packaging bag, and through the test, it can find the weak links of the whole package and provide improvements for subsequent processing. in accordance with. Labthink has been committed to providing professional testing equipment and services to customers around the world. In addition to leakage and seal strength testers, Labthink also provides you with oxygen permeability tester, water vapor transmission rate tester, and intelligent electronic tensile tester. , sealing tester, heat seal tester and other testing equipment, used to test the barrier properties of packaging, sealing, heat sealing strength and other properties, specific equipment information and services, you can visit the website of Jinan Languang company Check or call for advice. The more you understand, the more trust! Jinan Languang Electromechanical Technology Co., Ltd. is willing to take this opportunity to increase technical exchanges and cooperation with enterprises and institutions in the industry.
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