Moisture Vapour Transmission Rate Measurement
topic
Moisture vapour transmission rate measurement uses the upright cup method per ISO 15496, inverted cup method, or the sweating guarded hotplate method per ISO 11092 that measures the Ret thermal resistance to evaporative heat transfer, with MVTR values above 10000 grams per square metre per day classified as highly breathable for active use, 5000 to 10000 as breathable for general outdoor use, and below 5000 as low breathability suitable only for static use.
Role
Quantifies the breathability performance of membrane laminates through standardised evaporative moisture transfer measurement that determines whether the product provides adequate moisture management for the intended activity level, with MVTR being the complementary performance parameter to hydrostatic pressure that together define the waterproof-breathable performance envelope of each laminate product for specific end-use applications and marketing communication.
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