5408.31.20.10 - Mixed mainly or solely with synthetic filaments (618)

This HTS category, 5408.31.20.10, specifically classifies woven fabrics composed primarily or exclusively of artificial filament yarn. These fabrics are distinguished by their composition, which must be predominantly or entirely made from artificial filaments, as opposed to natural fibers or other types of man-made filaments. This classification falls under the broader heading of woven fabrics of artificial filament yarn, encompassing those derived from heading 5405.

The parent context indicates that this category is a further refinement within "Other woven fabrics" that are "Unbleached or bleached." The designation "Mixed mainly or solely with synthetic filaments (618)" is a key qualifier that differentiates this subcategory. While the parent implies unbleached or bleached woven fabrics of artificial filament, this specific node directs classification towards those where the artificial filament is mixed, but predominantly or solely with synthetic filaments, rather than other blends or pure artificial filament constructions that might fall under a different sibling category.

As this is a leaf node in the HTS classification, there are no further subcategories. Therefore, classification under 5408.31.20.10 is definitive based on the fabric's material composition and processing state (unbleached or bleached). Examples of fabrics that would fall here include those where the artificial filament yarn is the primary component, with synthetic filaments making up a significant portion but not exceeding the artificial filament content, and the fabric has undergone either no bleaching or is bleached.