5515.21.00.40 - Satin weave or twill weave (628)

This HTS classification, 5515.21.00.40, covers woven fabrics of synthetic staple fibers, specifically those of acrylic or modacrylic staple fibers that are mixed mainly or solely with man-made filaments. The key defining characteristic of goods within this subcategory is their weave. This particular code specifically applies to fabrics woven in a satin weave or a twill weave. These weaves are known for their distinct surface appearances and drape, with satin weave typically yielding a smooth, lustrous surface and twill weave exhibiting a characteristic diagonal pattern.

This category is distinguished from its siblings by its precise weave construction. For instance, while other codes within 5515.21.00 cover poplin or broadcloth (5515.21.00.10), sheeting (5515.21.00.20), and printcloth (5515.21.00.30), this code is exclusively for fabrics exhibiting the structural characteristics of a satin or twill weave. The "Other" category (5515.21.00.90) serves as a residual for woven fabrics of this material composition that do not fit the definitions of the specific weaves outlined in the preceding codes.

As 5515.21.00.40 is a leaf node, there are no further subdivisions within this specific HTS code. Therefore, classification hinges entirely on the accurate identification of the fabric's material composition (acrylic or modacrylic staple fibers predominantly mixed with man-made filaments) and its weave construction (satin or twill). Importers and exporters should ensure that the fabric's physical characteristics precisely match the definition of either a satin or twill weave to correctly apply this tariff heading.