5501.20.00.00 - Of polyesters

This HTS category, 5501.20.00.00, specifically covers synthetic filament tow made from polyesters. Filament tow refers to a large, untwisted bundle of continuous filaments, typically of a length suitable for further processing into spun yarns, wadding, or other textile materials. The defining characteristic of goods within this classification is their primary composition of polyester polymers.

It is crucial to distinguish this category from its siblings. For example, it differs from the "Of nylon or other polyamides" category, which encompasses filament tow made from different synthetic polymers. Similarly, filament tow composed of acrylic or modacrylic fibers would fall under 5501.30.00, and tow made from polypropylene is classified under 5501.40.00.00. This category, 5501.20.00.00, is exclusively for polyester-based filament tow.

As a leaf node within the HTS structure, 5501.20.00.00 does not have further subdivisions. Therefore, classification under this heading relies on confirming that the material is indeed synthetic filament tow and that its constituent fibers are exclusively polyesters. Practical classification will involve examining material composition, often through testing or manufacturer declarations, to ensure it aligns with the polyester standard for filament tow.