A guiding device (10) of an apparatus for producing sanitary articles for applying at least one thread (11) onto a substrate (12) intended for producing these sanitary articles, in which said guiding device (10) is able to guide the thread (11) quickly, accurately, and stably without being subject to wear and contamination problems, while ensuring reduced energy consumption. The present invention also relates to a method for applying a thread (11) onto a substrate (12) intended to produce sanitary articles.