Abstract: Nitrogen-filled packaging is an important measure to prevent oxidative deterioration of food and medicine. In this paper, the effects of the packaging materials barrier properties on the quality of nitrogen-filled packaging are analyzed by testing the gas composition in nitrogen-filled packaging and the packaging materials barrier properties. The test principle, parameters, application and test procedure, the used headspace analyzer and differential pressure gas permeability tester are introduced, so as to provide reference for monitoring [...]

Abstract: The cup method used to measure the water vapor permeability of materials includes two methods: desiccant method and water method. In this paper, the two methods are used to measure the water vapor permeability of a foamed sponge sample. The test principle, procedure and results of the two methods are compared. The instrument specifications and applications are introduced, which provides a reference for the use of the cup method to test the moisture barrier [...]

Abstract: The thickness of the film is an important factor affecting the oxygen permeability. In this paper, the oxygen permeability of the same material with thickness of 10 μm、12 μm、15 μm、25 μm was measured, and the change of oxygen permeability with the thickness of the film was compared. The test principle, test instrument specifications and applications of the differential pressure gas permeability tester and the test procedure were introduced, in hope to provide reference for [...]

Abstract: PE, BOPP and PET are three kinds of widely used packaging materials with different barrier properties. In this paper, we will use pressure difference method to measure the oxygen and nitrogen permeability of these three kinds of films with same thickness. The barrier properties of the three materials to oxygen and nitrogen are compared. The paper introduces the test principle, the instrument used, and provides reference for further studies of material permeability. Key words: [...]

Abstract: Nitrogen permeability is an important factor affecting the preservation ability of packaging materials filled with nitrogen. This paper evaluates the influence of temperature on the nitrogen preservation ability of packaging materials by testing the nitrogen permeability at different temperatures, and introduces the test principle, the parameters and application scope of VAC-V2 Gas Permeability Tester, and the test process, provides enterprises with a reference to control the packaging materials nitrogen permeability. Keywords: nitrogen permeability, temperature, [...]

Abstract With increasing focus on energy efficient and sustainable building envelopes, the need to define the heat-air-moisture transport (hygrothermal) properties of building materials accurately cannot be overemphasized. New techniques have been evolving and being examined for this purpose. The Modified Cup Method is one such technique to determine the water vapour transmission properties of building materials. This paper uses C360M Water Vapor Transmission Rate Test System to test the water vapor transmission rate of an [...]

ABSTRACT: Recycling and reusing waste bottles has become an important measure for environmental protection. Through testing the oxygen permeability of PET plastic bottles with different recycled materials, this paper studies the influence of recycled materials content on the oxygen barrier of the samples, and introduces the test principle, the parameters of C230H oxygen transmission rate test system, the scope of application and the test process, in hope to provide a reference for testing the performance [...]

Abstract: The thickness of aluminized layer has an important influence on the barrier property of aluminized film. In this paper, the effect of coating thickness on the moisture resistance of aluminized film was studied by measuring the water vapor transmission rate of two VMBOPP samples with different thickness of aluminized layer. The test principle, parameters and application scope of C330H water vapor permeability test system and test process were introduced, in hope to provide reference [...]

Abstract: the shelf life of donkey hide gelatin fudge is usually long, so the barrier performance of packaging materials has an important impact on its quality. In this paper, the front and back composite film materials of plastic packaging used in a certain brand of donkey hide gelatin fudge are used as test samples. The moisture resistance of the samples is evaluated by the water vapor transmission rate of the test samples. The test principle, [...]

Abstract: Temperature and humidity are the important factors that affect packaging materials’ water vapor barrier performance. In this paper, we tested the Water Vapor Transmission Rate of Black & White Film for milk packaging under different temperature and humidity, in hope to provide reference for the study of effect of temperature and humidity on water vapor transmission rate of packaging materials Keywords: temperature, humidity, Water Vapor Transmission Rate, water vapor barrier properties, Water Vapor Transmission Rate test system, cup method, gravimetric [...]