5515.21.00.90 - Other (629)

This HTS category, 5515.21.00.90, encompasses other woven fabrics of synthetic staple fibers, specifically those composed mainly or solely of acrylic or modacrylic staple fibers. The defining characteristic of this subcategory is the predominant inclusion of synthetic staple fibers, as opposed to continuous filaments, within their construction. These fabrics are woven, meaning they are produced by interlacing warp and weft threads on a loom.

The distinction between this "Other" category and its siblings lies in the weave pattern. Categories such as poplin or broadcloth (5515.21.00.10), sheeting (5515.21.00.20), printcloth (5515.21.00.30), and satin weave or twill weave (5515.21.00.40) are all specific classifications based on distinct weaving techniques that impart particular visual and textural characteristics to the fabric. This category captures woven fabrics of acrylic or modacrylic staple fibers that do not fit into these more narrowly defined weave patterns.

As a leaf node, 5515.21.00.90 has no further subcategories. Therefore, classification within this code hinges on the absence of specific weave patterns identified in its sibling entries. Examples of fabrics that would fall under this classification include plain weaves that are not categorized as poplin, broadcloth, sheeting, or printcloth, as well as other less common or less standardized woven structures utilizing acrylic or modacrylic staple fibers. The key is the primary composition of acrylic or modacrylic staple fibers and a woven construction that deviates from the explicitly listed weave types.