Two views of staple crimpers used at DuPont during the early stages of synthetic fiber production and research. During production, a tow (an untwisted bundle of continuous filaments) was fed between two serrated rolls in order to create a crimping effect. So-called "stuffer" plates on either side helped aid the crimping and make the fiber softer and fluffier. In the second photograph, the crimped tow can be seen emerging from the bottom of the crimper.
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“Staple Crimpers for Synthetic Fibers,” March 31, 1946. Joseph X. Labovsky Collection of Nylon Photographs and Ephemera, Box 2. Science History Institute. Philadelphia. https://digital.sciencehistory.org/works/p5547r44x.
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