5506.20.00.00 - Of polyesters

This HTS category, 5506.20.00.00, specifically covers synthetic staple fibers that are derived from polyesters. These fibers, by definition, are discontinuous and have been subjected to processes such as carding, combing, or other preparations that render them suitable for spinning into yarn. The "Of polyesters" designation is the key differentiator, indicating that the primary polymer used to create these fibers is polyester.

Distinguishing this category from its siblings is crucial for accurate classification. For instance, 5506.10.00.00 encompasses staple fibers made from nylon or other polyamides, which have different chemical compositions and therefore distinct physical properties and end-use applications. Similarly, 5506.30.00.00 covers acrylic or modacrylic fibers, while 5506.40.00.00 pertains to polypropylene fibers. The "Other" category, 5506.90.01.00, serves as a residual classification for any synthetic staple fibers that do not fall under the polyester, nylon, acrylic, or polypropylene headings.

As this is a leaf node within the HTS structure, there are no further subcategories that subdivide the classification of polyester staple fibers. Therefore, the focus for classification within 5506.20.00.00 is on ensuring that the fibers are indeed polyester-based and have undergone the specified preparatory processes for spinning. Examples of common polyester staple fibers in this category include those made from polyethylene terephthalate (PET) and polybutylene terephthalate (PBT), often used in the manufacturing of textiles for apparel, home furnishings, and industrial applications.