Staple Classification
Tariff classification codes governing discontinuous man-made fibres regulate trade in synthetic and artificial staple, tow and spun yarns. Documentation citing HS Chapter 55 covers synthetic staple fibres that have been carded, combed or otherwise processed for spinning. The classification encompasses acrylic, polyester and rayon staple, along with spun yarns and woven staple fabrics.
The scope excludes continuous long filaments and non-woven mats produced directly from polymer melts.
Tow Conversion
Filament tow intended for conversion into staple fibre occupies specific precursor headings. Under HS Chapter 55, synthetic filament tow must meet specific length and crimp criteria to avoid reclassification into filament chapters. Converters track tow specifications to ensure correct duty payment prior to cutting.
Spun Yarn
Spinning method and blend composition dictate sub-headings for staple yarns. Spun yarns listed in HS Chapter 55 are divided by whether they are single or plied and whether synthetic content dominates total mass. Mixed staple yarns with wool or cotton follow strict weight percentage rules.
Fabric Category
Woven staple fabrics are organized by weave type, mass per unit area and coloration method. Sub-headings within HS Chapter 55 distinguish plain weave polyester-cotton blends from heavy printed twill fabrics. Customs verification requires precise fibre mass ratio testing.
