5512.29.00.40 - Satin weave or twill weave (617)

This HTS category, 5512.29.00.40, specifically classifies woven fabrics manufactured from synthetic staple fibers, where synthetic staple fibers constitute 85% or more of the total weight. Crucially, these fabrics are characterized by their specific weave structures: satin weave or twill weave. This classification applies to a broad range of synthetic staple fiber fabrics that do not fall under the more narrowly defined weave types listed under sibling categories.

To distinguish this category from its siblings, it is important to note that while all fall under "Other" woven fabrics of synthetic staple fibers containing 85% or more acrylic or modacrylic staple fibers, the defining characteristic here is the presence of a satin or twill weave. Sibling categories like 5512.29.00.15 (Poplin or broadcloth), 5512.29.00.20 (Sheeting), 5512.29.00.25 (Printcloth), 5512.29.00.30 (Cheesecloth; lawns, voiles or batistes), and 5512.29.00.35 (Duck) denote fabrics with distinct weave structures, thread counts, or typical uses. Therefore, if a woven fabric of synthetic staple fibers has a discernible satin or twill weave, it would be classified here unless it meets the specific criteria of one of those other enumerated weave types.

As this is a leaf node within the HTS, there are no further subdivisions under this specific code. Classification decisions under 5512.29.00.40 will therefore hinge directly on the fiber content (at least 85% synthetic staple fibers, and specifically acrylic or modacrylic within this branch) and the confirmation of a satin or twill weave structure, distinguishing it from other weave types. Examples of fabrics that might fall here include certain synthetic satins used in linings or decorative applications, or synthetic twills used in apparel or upholstery where the specific weave is the primary classifying characteristic.