Testing the Moisture Barrier Properties of Desiccant Pack Materials

Desiccants are commonly used to absorb moisture from the surrounding environment. They come in various forms, including silica gel and calcium chloride. Desiccants play a crucial role in protecting a wide range of products, such as electronics, pharmaceuticals, food, and clothing, from moisture-related damage like corrosion, mold growth, and spoilage.

To ensure the effectiveness of desiccants, they are often packaged in individual sachets or pouches made from specific materials. These materials must possess appropriate moisture barrier properties to allow moisture to reach the desiccant while preventing the desiccant from contaminating the product.

Several methods are available for evaluating the moisture barrier properties of desiccant pack materials. One common method is the cup method, which involves placing a sample of the material over a cup containing a known amount of desiccant. The assembly is then placed in a controlled humidity environment. The weight of the desiccant is monitored over time to determine the amount of moisture absorbed.

Labthink C360H 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.

By carefully evaluating the moisture barrier properties of desiccant pack materials, manufacturers can ensure the optimal performance of their products and enhance their overall quality and safety.