How does a fabric shrinkage tester work

A fabric shrinkage tester works by subjecting a fabric sample to controlled conditions of temperature and humidity to measure the amount of shrinkage that occurs. The tester usually consists of a heated chamber with a controlled environment, where the fabric sample is placed and subjected to controlled conditions of temperature and humidity. The fabric sample is measured before and after the test, and the amount of shrinkage is calculated as a percentage of the original size. The tester may also include a mechanism to apply tension or pressure to the fabric sample during the test to simulate real-world conditions. The results obtained from the shrinkage tester are used to determine the quality and durability of the fabric, as well as to help manufacturers develop better production processes to minimize shrinkage