A TEST METHOD FOR DETERMINATION OF MOISTURE VAPOR TRANSMISSION RATE OF ABSORBENT MATERIALS

摘要

A test method is provided that comprises the testing for moisture vapor transmission of certain materials, such as leather, that absorb water in sufficient quantities to give erroneous moisture vapor transmission values by conventional methods. The test method incorporates an equilibration step for the sample in order to obtain steady state transmission data and not simultaneously absorption/transmission data. The test method finds utility in functional applications such as in the screening and ranking of leathers destined for end-use products such as footwear.