Abstract: The paper introduces a limited space compression method to evaluate the compression performance of hollow polyester staples. The method is to simulate the compression state of fiber in the end product after packaging, so as to evaluate the compression performance of hollow polyester staples well. This method is suitable for evaluating the elastic recovery performance of compressed products with hollow fibers as raw materials after the package is opened, and has a certain guiding effect on the development of fiber products and downstream applications. In addition, with good repeatability and accuracy, the method is simple, fast and reliable for accurately evaluating the compression properties of hollow polyester staples.

Key words: hollow polyester staples; compression elastic recovery rate; limit space compression