The diffusion coefficient is an important parameter for studying the permeation behavior of gases in materials. This article uses a pressure difference gas permeameter as the experimental equipment and uses the time lag method to analyze the diffusion coefficient of oxygen in PET film samples. Through the introduction of the experimental principle, equipment parameters, scope of application, and experimental process, it provides reference for studying the diffusion coefficient of gas in films.

The sealing performance of packaging is an important factor affecting whether product packaging is prone to problems such as air leakage, bag breakage, and deterioration. Air leakage pressure is an important indicator of packaging sealing performance. This article tested the sealing performance of the same type of packaging bags containing different amounts of gas, in order to study whether the amount of gas inside the packaging affects the leakage pressure of the sealing test. It also introduced the testing principle, equipment parameters and scope of application, testing process, etc., providing reference for the testing of sealing and the definition of indicator values.

Nitrogen filled packaging is a commonly used packaging form to improve the storage quality of bread, and the oxygen content in the packaging is an important factor determining the shelf life and shelf life of nitrogen filled packaging forms. This article tested the oxygen content inside the packaging of bread packaged with KOP/CPP and BOPP/CPP materials after storage for a period of time. Through the introduction of the experimental principle, equipment parameters, scope of application, and experimental process, it provides reference for monitoring the gas content in the packaging.

In order to verify whether the substrate material will affect the barrier performance of aluminum plated film, this article takes aluminum plated film made of PET and BOPP, two common substrates with similar thickness, as test samples. The C230G oxygen permeability testing system based on Coulomb principle was used to test the oxygen permeability of the two samples, and the experimental principle, equipment parameters and applicable scope, experimental process, etc. were introduced, providing reference for the screening of aluminum plated film and the study of its barrier performance.

Whether the electrode coating is easy to peel off is an important factor affecting the performance and lifespan of the battery. This article tests the peeling force value of the surface coating of electrode samples through a 180 degree peeling test, and introduces the testing principle, parameters and scope of application of the XLW (PC) intelligent electronic tensile testing machine, and the testing process, providing reference for how to detect the adhesion strength of electrode coatings.

The puncture resistance is the fundamental performance that determines the durability of latex gloves. This article introduces a testing method for the puncture resistance of latex gloves by testing the puncture strength of samples. The testing principle, equipment parameters, scope of application, and testing process are also described, providing effective reference for the testing and monitoring of the puncture resistance of glove products.

Temperature and humidity are important factors affecting the gas barrier performance of packaging materials. This article analyzes the influence of temperature and humidity on the moisture resistance of black and white film samples for milk packaging under different temperature and humidity conditions, and introduces the experimental principle, equipment parameters, and applicable scope. It provides reference for the testing and analysis of water vapor transmission rate of packaging materials under different conditions.

Increasing or decreasing the thickness of film materials is one of the important measures to improve packaging barrier performance. However, increasing the thickness of materials will inevitably increase packaging costs and increase environmental burdens. This article explores the effect of increasing the thickness of different single-layer film structures in composite film materials on the overall oxygen barrier performance of packaging by testing the oxygen permeability of thin film materials with different thicknesses. It also introduces the experimental principle, parameters, scope of application, and testing process of the VAC-V2 pressure difference gas permeation instrument, providing reference for how to effectively improve the barrier performance of packaging materials.

The application of green and environmentally friendly materials based on tomato peel research will help reduce the burden on the environment caused by the use of non degradable and recyclable materials such as plastics. This article specifically tests the water vapor barrier performance of a thin film material developed based on tomato peel. Through the introduction of the experimental principle, process, and equipment parameters and scope of application of the W3/031 water vapor permeability tester, it provides reference for the research on the moisture resistance of such plant-based environmentally friendly materials.

Harmful gases are potential threats to mine safety, and the application of corresponding sealing materials is one of the effective methods to reduce the concentration of harmful gases in mines. This article evaluates the sealing performance of harmful gas blocking materials in mines, evaluates their ability to block harmful gases, and introduces the parameters, scope of application, and testing process of the VAC-V2 pressure difference gas permeameter based on relevant experimental principles, providing reference for the research and application of related polymer materials.

Breathability is an important factor affecting the performance of leather applications, and the principle of pressure difference method is usually used to test the breathability of leather. This article takes leather used in clothing as the experimental sample, and uses the TQD-G1A breathability tester to test its breathability. Through the introduction of the testing principle, equipment parameters, scope of application, and testing process, it provides reference for the testing of breathability of leather materials.

The moisture permeability of medical wound dressings is an important factor affecting the healing effect of wounds. This article uses the cup method principle to test the water vapor permeability of wound dressing samples, and introduces the experimental principle, parameters and scope of application of the W3/060 water vapor permeability testing system, and the experimental process. It can be used as a reference for enterprises and related institutions to monitor the moisture permeability of wound dressing products.