Labthink Instruments Co., Ltd. [email protected] +86-531-85068566 Moisture Permeability Testing for Leather Clothing Comfort The comfort and hygiene of leather garments is highly relevant to moisture permeability. Good permeability allows sweat to evaporate, preventing discomfort and skin issues. It maintains a comfortable microclimate between the skin and clothing. When the body sweats, efficient moisture escape is essential. Leather with high permeability facilitates this, especially during physical activity or in warm environments. Several factors influence permeability. In natural leather, the collagen fiber network, pores, and water affinity (hydrophilic groups) are key. Synthetic leathers depend on the permeability of their coatings. External factors like temperature, humidity, and pressure also play a role. The "cup method" (or dish method) is a common testing procedure. A leather sample is sealed over a container holding a desiccant or water. The container is placed in a controlled environment. Weight changes over time indicate the amount of water vapor transmitted through the leather. Weight gain with a desiccant, or weight loss with water, signifies permeability. Standards like ISO 2528 and ASTM E96 for water vapor transmission rate using the dish method standardize testing procedures to ensure consistent results. Specialized equipment controls environmental conditions and measures weight changes precisely. 1
Open the catalog to page 1Labthink Instruments Co., Ltd. [email protected] +86-531-85068566 Labthink C360M Water Vapor Transmission Rate Test System, is designed and manufactured based on the gravimetric determination method and conforms to the requirements of ASTM E96. This instrument can be used to measure the water vapor transmission rate of barrier materials with high, medium and lower moisture barrier properties with a wide testing range and high testing efficiency. C360M is applicable to determination of water vapor permeability of plastic films, sheeting, paper, packages and other packaging materials in food, pharmaceutical,...
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