Abstract: Today, as pets are becoming more and more important, the quality control requirements for pet foods are becoming more standardized. In addition to the quality and safety of pet food itself, the quality, safety and testing of pet food packaging has increasingly attracted the attention of pet food manufacturers.
Key words: pet food packaging bag quality control and detection, differential pressure gas permeation instrument, moisture permeability tester, tensile testing machine, sealing tester, sealing strength, sealing performance, puncture resistance
text:
With the improvement of living standards and lifestyle changes, people's leisure, consumption and emotional sustenance have also undergone major changes, and the pet industry has risen rapidly. Today, as pets become more and more important, the quality control requirements for pet foods are increasingly regulated. In addition to the quality and safety of pet food itself, the quality, safety and testing of pet food packaging has increasingly attracted the attention of pet food manufacturers. Labthink is followed by a differential pressure gas permeation tester, a moisture permeability tester, an intelligent electronic tensile tester, and a seal tester to briefly describe the barrier properties, seal strength, puncture resistance and sealing performance of pet food packaging.
First, the barrier performance test of pet food packaging
Barrier performance refers to the barrier effect of vacuum packaging materials on permeates such as gases and liquids. Barrier performance tests include both gas (oxygen, nitrogen, carbon dioxide, etc.) and water vapor transmission properties. Barrier performance is an important factor affecting the quality of products during the shelf life, and is also an important reference for analyzing shelf life.
(1) Oxygen transmission of pet food packaging
Pet food ingredients contain a lot of fat. If the packaging material has poor oxygen barrier properties, the food will be too much contact with oxygen, and the fat will be easily oxidized, resulting in spoilage. On the other hand, for some scented foods, The entry of air and the overflow of the aroma in the package will reduce the pet's satisfaction with the food. To summarize the relevant standards, the oxygen permeation test is tested in accordance with GB/T 1038-2000 Plastic Film and Sheet Gas Transmission Rate Test Method Differential Pressure Method. Labthink's VAC series of differential pressure gas permeation instruments are excellent in selection, and all indicators are superior to national or international standards. The performance is stable and reliable. In addition to the gas permeability detection function, it also has a diffusion coefficient and penetration. The test function of coefficient and solubility coefficient meets the research needs of analysis and improvement of the barrier properties of materials by scientific research institutions and colleges.
(2) Water vapor transmission in pet food packaging
If the pet food package does not have a very high water repellency, the food in the package is likely to agglomerate due to moisture, which can also cause microbial growth and endanger the health of the pet. To summarize the relevant standards, the water vapor transmission test is tested according to GB/T 1037-1988 Plastic film and sheet water vapor permeability test method cup method. The test conditions are temperature 38±0.6°C, relative humidity 90±2%. . Labthink's moisture permeability tester uses a high-precision load cell to improve test accuracy and effectively shorten the judgment time of the permeation balance during the test, thereby effectively shortening the test time. Secondly, the temperature and humidity control technology and the weighing technology are combined with the computer control technology to achieve the test weighing in the test environment, without manual intervention, so that the test process is completely free from external influences, the test results are more accurate, and the aluminum foil is completely satisfied. Requirements for moisture permeability testing of high resistance materials. In addition, the equipment is also available in single, three, six and twelve chambers to meet the needs of different customers.
Second, the mechanical properties of pet food packaging
Mechanical performance is a basic indicator for measuring the protection of pet food in the production, transportation, shelf life, use and other aspects of pet food packaging, generally including: tensile strength and elongation, heat sealing strength, tear resistance and other indicators.
(1) Tensile strength refers to the large stress value of the pet food packaging material before it is broken. The detection can effectively solve the problem of packaging damage caused by insufficient tensile strength of the selected packaging material. Labthink's XLW intelligent electronic tensile testing machine is designed and manufactured for the packaging industry. From the selection of test items, the setting of parameters to the sampling of post-data, it is completely in accordance with the relevant national standards of the packaging industry. The corresponding test project can complete the corresponding test, directly issue the standard test report and the results of the standard test unit, without manual conversion, one machine has 7 tests including tensile strength and deformation rate, peel strength, heat sealing strength and tearing. The function, and these functions all adopt the menu interface, select the corresponding detection function, and can perform the test specified by the standard. It is the professional instrument in the industry.
(2) Heat sealing strength, also known as heat seal strength, is an analytical index for assessing the sealing strength of heat sealing parts of pet food packaging. If the heat sealing strength is insufficient, the package may be cracked, leaked, and contaminated in the heat seal. Labthink's HST series heat seal tester adopts microcomputer integrated control. All core components are from world famous brands, and the control is precise and human-computer interaction is friendly. With the above mentioned intelligent electronic tensile testing machine, the pet food packaging can be sealed. Accurate measurement of strength and a variety of models for users to choose.
(3) Tear resistance: pet food packaging and packaging materials may be torn by external force during storage and transportation. Sufficient tear propagation resistance can reduce tear transmission and avoid damage to packaging. In addition, the tearing performance is also an important indicator of whether the pet food packaging is easy to open. The tearing force determines the difficulty of the consumer to open the package. Labthink's SLY-S1 tear meter uses computer control and display, and computer The horizontal adjustment technology ensures that the test data is accurate and reliable. The unique “three-circle†analysis technology can help users to visually analyze and evaluate the data. It is the detection equipment with high degree of automation and high precision in the international similar products.
Third, the sealing performance of pet food packaging
Sealing performance refers to the reliability of the pet food packaging seal, which ensures the integrity of the entire product packaging seal. There are many methods for sealing performance testing. The common method used by Zui is to use a leak tester, such as Labthink's MFY-01 seal tester, using the vacuum principle, according to national standards, respectively, at -30kpa, -50kpa, -70kpa, - 90kpa is kept for 0.5 minutes. For vacuum packaging, it is mainly to observe the recovery of the sample after the test. Of course, the above method is based on the principle of visual inspection. It is a qualitative test method. If you want to quantitatively test the sealing and leakage performance of pet food packaging, you can use the principle of positive pressure to seal the performance testing equipment, such as LSSD of Labthink. 01 leak and seal strength tester.
Of course, after ensuring the barrier performance, mechanical properties and sealing performance of the pet food packaging, it is necessary to control other indicators to ensure the quality of the products during the shelf life. For more information about related instruments, check the specific information. Jinan Languang Electromechanical Technology Co., Ltd. is willing to enhance exchanges and cooperation with enterprises and institutions in the industry.
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