Strong stroke made on a piece of paper. I'm tangled. It is the name given to the first synthetic natural fiber. Cellulose Acetate which was also called viscose. Rayón is the name of several municipalities and municipalities of Mexico (States of Chapas, Mexico, Michoacán, San Luis de Potosí and Sonora). It is also a surname of Spanish origin. Last name of a Spanish journalist, historian and writer named Fernando Rayón Valpuesta.