Food packaging is the last process of the food industry, but also an important part of food safety, it plays an important role in protecting product quality and hygiene, not losing original ingredients and nutrition, convenient storage and transportation, extending the shelf life and improving the value of goods. Food packaging has become an inseparable and important part of food. With the continuous improvement of people's demand for food quality and food hygiene and safety, new and higher requirements are put forward for packaging directly related to food quality and food hygiene and safety.
Oxygen permeability tester for soft plastic packaging film oxygen permeability tester, also known as oxygen permeability tester, oxygen permeability meter, oxygen permeability tester, oxygen permeability testing system, etc. At present, in the industry, there are two test principles involved in the testing of "oxygen permeability" in plastic films and food packaging materials - namely differential pressure method and isobaric method (coulomb electricity method). Generally speaking, the differential pressure method test follows the standard "GB T 1038-2000 Plastic Film and Sheet Gas Permeability Test Method Differential Pressure Method", here, we take the VAC-V2 differential pressure method gas permeability meter as an example to briefly introduce the application scope and technical characteristics of the oxygen permeability tester for soft plastic packaging materials.
VAC-V2 Oxygen Permeability Tester for Soft Plastic Packaging Materials Based on the test principle of differential pressure method, the film oxygen permeability tester is a professional gas permeability tester for film samples, which is suitable for the determination of gas permeability, solubility coefficient, diffusion coefficient and permeability coefficient of plastic films, composite films, high barrier materials, sheets and metal foils at various temperatures. The test principle is as follows: the differential pressure method test principle is adopted, and the pre-treated sample is placed between the upper and lower test chambers and clamped. The low-pressure chamber (lower chamber) is first vacuumed, and then the entire system is evacuatedWhen the specified vacuum degree is reached, the lower chamber of the test is closed, and the high-pressure chamber (upper chamber) is filled with a certain pressure of test gas, and a constant pressure difference (adjustable) is formed on both sides of the sampleIn this way, the gas will penetrate from the high-pressure side to the low-pressure side under the action of the differential pressure gradient, and the internal pressure of the low-pressure side will be monitored and processed to obtain the various barrier parameters of the tested sample.
The flexible packaging oxygen permeability tester can test a wide range of materials: such as thin film monolayer film, plastic composite film, paper-plastic composite film, co-extrusion film, aluminized film, aluminum foil, aluminum foil composite film and other materials;Sheets of various engineering plastics, rubber, building materials, etc.;In addition, it can also be used for paper and cardboard, biodegradable film, aerospace materials, paint film, glass fiber cloth, glass fiber paper, cosmetic hose sheet, various rubber sheets and other materials.
The differential pressure instrument can be extended to test the permeability performance of different gases, such as oxygen, carbon dioxide, nitrogen, air, helium, etc., and at the same time, the instrument can also be used for the permeation detection of flammable and explosive gases such as hydrogen, methane and other special gases through special safety customization.