Oxygen permeability/Breathability/Hygroscopicity testing

The gas permeability test, also known as the gas barrier test or gas permeability test, examines the barrier properties of films and sheets to common inorganic gases. It is one of the main barrier performance indicators for materials. Oxygen permeability is usually tested, but due to the widespread use of gas conditioning packaging. The test is usually carried out on the oxygen permeability of the material, but due to the widespread use of gas-conditioned packaging, the carbon dioxide and nitrogen permeability of the packaging material is also tested.

It is advisable to have 2 spare samples for each test, both surfaces must be smooth and flat. 1. MOCON 3/33MA (moisture permeability test), MOCON 221MD (oxygen permeability test) Sample requirements: 120120mm square piece, thickness should not exceed 2mm, two surfaces should be smooth and flat. 2. Labthink sample requirements: thin film, thickness: less than 1mm, size: 30mm diameter. 3. YG461E air permeability tester (air), YG(B)216T moisture permeability: minimum greater than 1010cm, preferably greater than 20*20cm. The air/oxygen/moisture permeability of the samples is tested with reference to various standards. 1. Moisture permeability standards are partially listed: GB/T 12704.1 Moisture absorption method of fabric permeability test: applicable to all types of fabrics with thickness within 10mm, not applicable to fabrics with moisture permeability greater than 29000g/(m2-24h); GB/T 12704.2-2009: textile fabrics Moisture permeability test method Part 2: evaporation method; GB/T 1037-2021: Determination of water vapour transmission properties of plastic films and sheets Cup weight gain and weight loss method; GB/T 16928-1997: Test methods for packaging materials Moisture permeability; GB/T 26253-2010: Determination of water vapour transmission rate of plastic films and sheets Infrared detector method; GB/T 30412-2013: Determination of the water vapour transmission rate of plastic films and sheets Moisture sensor method; ASTM E398 standard covering the dynamic assessment of water vapour transmission rates through flexible barrier materials and allowing conversion to generally accepted water vapour transmission (WVT) units obtained by various other test methods, including the weight method described in the test methods; ASTM E96: Standard test method for the water vapour transmission of materials; ASTM D1653 standard covering the determination of the rate of water vapour transmission through paints, varnishes, lacquers and other organic coating films; ISO 15106-1: Plastics. Films and sheets. Determination of water vapour transmission rates. Part 1: Moisture detection sensor method; ISO 2528: Thin sheet materials. Determination of water vapour transmission rate (WVTR). Weight method; TAPPI T523: Water vapour transmission, dynamic measurement through sheets; JISK 7129-1: Japanese Industrial Standard, Plastics - Films and Sheets - Determination of Water Vapour Transmission Rate Part 1: Sensor Method for Moisture Detection; DIN 53122-1: Inspection of plastic films, flexible films, paper, cardboard and other flat loose articles; Determination of water vapour permeability; Part 1: Cup method; YBB00092003-2015: Water vapour transmission rate determination method for testing water vapour transmission rate of pharmaceutical packaging materials and containers. 2. Oxygen transmission rate testing standards: GB/T 19789-2005: Packaging materials Plastic film and sheet oxidation permeability test Coulomb meter test method. This standard specifies the test method for oxygen permeability of packaging materials under steady state - coulometer test method. This standard applies to the test of oxygen permeability of plastic film, sheet, composite materials, plastic laminated paper, plastic coated fabrics and other packaging materials, which can determine the oxygen permeability, oxygen transmission amount, oxygen transmission constant, etc. of packaging materials; GB/T 31354-2014: Test method for oxygen permeability of packaging parts and containers Coulometric test method. This standard specifies a test method for testing the oxygen permeability of packaging parts and containers under steady-state conditions using the coulometric method. This standard applies to the testing of the oxygen permeability of plastic and composite packaging and containers (hereinafter referred to as 'packaging'); ASTM F2622: Standard test method for oxygen permeability of plastic films and sheets using various sensors; ASTM F1307: Standard method for testing the oxygen permeability of packaging; ISO 15105-2: Plastics. Films and sheets. Determination of gas transmission rates. Part 2: Isobaric method; DIN 53380-3: German Institute for Standardization, Determination of the gas transmission rate of plastics. Part 1: Method for the determination of the oxygen loading rate of plastic films and plastic mouldings; YBB00082003-2015: State Food and Drug Administration, Method for the determination of gas transmission rate 3. Other gas transmission rate standards: GB/T 1038-2000: Test method for gas permeability of plastic films and sheets Differential pressure method This standard specifies the test method for determining the gas permeability and gas transmission coefficient of plastic films and sheets by the differential pressure method. ISO 15105-1: Plastics - Films and coatings - Determination of gas permeability - Differential pressure method The ISO 15105-1 standard developed by the International Organization for Standardization (ISO) provides two test methods for determining the gas permeability of single-layer plastic films or sheets and multi-layer structures subjected to differential pressure; STM F2476: Determination of carbon dioxide gas transmission rate of barrier materials using an infrared detector

1. Labthink results [img]output_images\ff5c3e6f-b989-4863-9d44-301ad63153c2_img_2.png[/img] 2. YG461E Breathability Tester (Air), YG(B)216T Moisture Permeability Results Moisture permeability result: 1247 g/m2/24h Breathability result: 49.4 cm3/s/cm2