It is used to measure the moisture permeability of various fabrics (including moisture-permeable coated fabrics) and non-woven fabrics such as cotton wool and space cotton.

GB/T12704-2009

[Test Principle]

  Place the moisture-permeable cup filled with moisture absorbent or water and sealed with a fabric sample in a sealed environment at a specified temperature and humidity, and calculate based on the change in the quality of the moisture-permeable cup (including sample and moisture absorbent or water) within a certain period of time The moisture permeability.