Full Description JIS K 7129-2:2019 specifies an instrumental method for determining the water vapour transmission rate of plastic film, plastic sheeting and multi-layer structures including plastics, which have smooth surfaces without any embossed portions, using an infrared detection sensor.
JIS K 7129-2:2019 history
2019JIS K 7129-2:2019 Plastics -- Film and sheeting -- Determination of water vapour transmission rate -- Part 2: Infrared detection sensor method