YO ASI 15105 Permeador de gas a presión diferencial “Determination of gas-transmission rate-Film and sheeting”
YO ASI 15105 Permeador de gas a presión diferencial “Determination of gas-transmission rate-Film and sheeting”
1. Principio
A test specimen is mounted in a gas transmission cell (see Figures A.1 and B.1) so as to form a sealed barrier between two chambers. The lower-pressure chamber is evacuated, followed by evacuation of the higher pressure chamber. A gas is introduced into the evacuated higher-pressure chamber and permeates into the lower-pressure chamber. The amount of gas which permeates through the specimen is determined by the increase in pressure on the lower-pressure side or by gas chromatography.
2. Test specimens
Test specimens shall be representative of the material under investigation, free from shrivelling, folds
and pinholes, and of uniform thickness. They shall be larger than the gas transmission area of the measurement cell and be capable of being mounted airtight.
Use three specimens unless otherwise specified or agreed upon among the interested parties.Mark the side of the material facing the permeating gas.
NOTE In principle, the test should replicate the actual conditions of use, with the gas passing from the inside to the
outside of e.g. packaging material, o vice versa.
Measure the thickness of each specimen in accordance with ISO 4593, to the nearest 1 micras, at at least five points distributed over the entire test area, and record the minimum, maximum and average values.
Differential PAGressure GRAMOas PAGermeator GA-5050-B
Instrumento de permeabilidad al gas con método de presión diferencial basado en el principio de prueba del método de presión diferencial, es un probador profesional de permeabilidad al gas para muestras de películas, adecuado para película plástica, material de alta barrera de película compuesta, hoja, lámina metálica a varias temperaturas de medición de la permeabilidad al gas y del coeficiente de permeabilidad al gas.
El instrumento adopta el principio de prueba de presión diferencial.. La muestra pretratada se coloca entre las cámaras de prueba superior e inferior y se sujeta firmemente. En primer lugar, la cámara de baja presión (cámara inferior) Vacuum treatment, and then vacuum the whole system; Cuando se alcanza el grado de vacío especificado, the lower chamber of the test is closed and the high voltage chamber (cámara superior) is chargedEnter a certain pressure of the test gas, and ensure that a constant pressure difference is formed on both sides of the sample (ajustable); So the gas will act on the pressure gradient.
In use, through the high pressure side and low pressure side penetration, through the low pressure side of the monitoring treatment, so as to obtain the test sample barrier parameters.
YO ASI 15105 Permeador de gas a presión diferencial “Determination of gas-transmission rate-Film and sheeting”
Nuestra máquina GA-5050-B está diseñado de acuerdo con este estándar y actualmente se usa ampliamente internacionalmente.
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