5515.21.00 - Mixed mainly or solely with man-made filaments

This HTS category, 5515.21.00, encompasses woven fabrics composed primarily or exclusively of synthetic staple fibers, where the synthetic staple fibers are mixed mainly or solely with man-made filaments. The defining characteristic of these fabrics is the blend of staple fibers (short, discrete fibers) with continuous man-made filaments, creating unique textural and performance properties. Such fabrics can be utilized in a wide range of applications, including apparel, home furnishings, and industrial textiles, depending on their specific weave and finishing.

To accurately classify goods within this heading, it is crucial to distinguish them from sibling categories. Category 5515.22 covers woven fabrics where the synthetic staple fibers are primarily or solely mixed with wool or fine animal hair, a distinction based on the natural fiber component. Category 5515.29.00, in contrast, serves as a residual category for other woven fabrics of synthetic staple fibers not covered by the more specific provisions, such as those mixed with cotton or other vegetable fibers.

Within 5515.21.00, further subdivisions exist to refine the classification based on weave structure and specific fabric types. These subcategories include poplin or broadcloth (5515.21.00.10), sheeting (5515.21.00.20), printcloth (5515.21.00.30), and satin weave or twill weave fabrics (5515.21.00.40). An "Other" category (5515.21.00.90) is available for fabrics that do not fit into these more specific weave or type designations. This granular breakdown allows for precise identification and tariff application based on the fabric's construction.