What is the Cobb Test and how does it evaluate the water absorption of paper and cardboard?

The Cobb Test is a standardized method used to measure the water absorption capacity of paper and cardboard. It involves placing a specimen of the material in contact with water for a specified time, after which the amount of water absorbed is determined by weighing the specimen. This test is crucial in industries like packaging and paper manufacturing to assess the material's ability to resist moisture penetration, which is essential for maintaining product integrity and quality. The Cobb Test results help manufacturers optimize material formulations and ensure compliance with regulatory standards for moisture resistance in various applications.

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