Moisture proof packaging test and test method

Abstract: moisture proof packaging is a common form of protective measures taken to protect products from water vapor in the process of circulation It is widely used in machinery, electronics, food, medicine, daily chemical and other fields Moisture proof packaging plays an important role in preventing the contents from rusting and deterioration Moistureproof packaging is very important for product moistureproof, so it is very important to carry out moistureproof packaging test room Key words: dampproof, dampproof packaging, dampproof packaging testing, quality testing Dampproof packaging is a common form of protective measures taken to protect products from water vapor in the circulation process, which is widely used in machinery, electronics, food, medicine, daily chemical and other fields Moisture proof packaging plays an important role in preventing the contents from rusting and deterioration In order to ensure the quality of moisture-proof packaging, such packaging needs to be tested The standards of moisture-proof packaging, such as GB / T 5048-1999 moisture-proof packaging, clearly stipulate the level and test method of moisture-proof packaging The specific contents are as follows: 1 The test of moisture-proof packaging and material water vapor transmission performance test the test of moisture-proof packaging materials needs to use the cup method according to the standard, which is also called the weight method and the weighing method The test principle is to use the weighing method, which is widely used in the detection of water vapor transmission rate of various packaging materials By weighing the mass change of the moisture permeable cup with the sample before and after the sample reaches the water vapor transmission balance under a certain temperature and humidity environment, the water vapor transmission rate of the sample can be calculated At present, the test of water vapor transmission by weighing method in China follows the national standard of GB 1037-1988 test method for water vapor permeability of plastic film and sheet - cup method The W3 / 060 water vapor transmission test system independently developed by Labthink Languang company can be used to test the water vapor transmission of moisture-proof packaging materials in combination with the above standards In addition, according to the actual application, the packaging materials have to go through multiple production processes such as forming, filling contents, hot pressing and sealing, which often lead to uneven thickness, poor sealing and other problems, which requires not only the detection of packaging materials, but also the detection of the entire moisture-proof packaging The perme Bomi W3 / 330 water vapor transmittance test system of Labthink blue light adopts the electrolytic test principle, and the excellent (separator) meets the needs of double test In addition, the instrument adopts the mode of host and satellite machine One host can carry 9 satellite machines to realize the simultaneous test of 30 kinds of materials 2 Test of sealing heat sealing strength of moisture-proof packaging materials the sealing heat sealing strength of moisture-proof packaging shall be tested according to gjb145 a-1993 (protective packaging specification), which shall be greater than 30 n / 5 cm In practice, there is a test standard QB / T 2358 (test method for heat sealing strength of plastic film packaging bags), which can be executed according to In order to carry out the inspection method specified in the standard, two equipment, i.e heat sealing tester and tension tester, are required The heat sealing tester is to simulate the three parameters of the production line sealing temperature, time and pressure in the production process to heat seal the sample The hst-h3 heat sealing tester of Labthink blue light is the test instrument for the sample preparation of sealing heat sealing strength test link in the laboratory Tensile testing machine is to apply tensile force to the sealing part to separate it, so as to test the sealing thermal strength Labthink Languang's XLW series intelligent electronic tensile testing machine is specialized in the detection of sealing heat sealing strength of moisture-proof packaging materials It can complete the test automatically only by selecting the test function of "heat sealing strength" In addition, it also has the functions of testing the tensile strength and elongation of moisture-proof packaging, the peel strength between composite film layers, tear strength, puncture performance, etc 3 The test on the sealing performance of damp proof packaging shall be carried out in accordance with the test standard of GB / T 15171 test method for sealing performance of soft package In this paper, the mfy-01 sealing tester of Labthink blue light is taken as an example, which is composed of a main machine, a vacuum generator and a vacuum tank Through the test to check whether the package has pinholes, cracks and open seals and other defects First place the package in a vacuum tank filled with water medium, set the vacuum degree holding time at 30-60 s, and set the vacuum degree as one of the following values: 20, 30, 50, 90 kPa, etc., start the test to reach the vacuum degree and maintain the vacuum degree within the set time Observe the leakage of the sample during vacuumizing and vacuum holding, depending on whether there is continuous bubble generation A single isolated bubble is not considered as sample leakage Labthink Languang has always been committed to providing professional testing services and equipment for customers around the world, focusing on solving the problems in packaging for customers, to learn more about Labthink Languang's testing equipment and services, you can visit the website of Jinan Languang company to check the specific information of the equipment or call for consultation Jinan Languang Electromechanical Technology Co., Ltd is willing to take this opportunity to enhance technical exchanges and cooperation with enterprises and institutions in the industry.