Polypropylene staple fibers prepared for spinning occupy a distinct niche in the synthetic fiber trade: their low density, moisture-wicking properties, and chemical resistance make them a preferred input for nonwoven fabrics, geotextiles, and certain industrial yarns. All US imports enter under the single tariff line 5506400000. Because polypropylene fiber production is concentrated in Asia, importers should assess Section 301 exposure depending on country of origin.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
Yes — classification hinges on both fiber chemistry and processing state. Polypropylene fibers that have been carded or combed for spinning belong under 5506400000, while polypropylene tow (uncut continuous filament bundles) or fibers not yet processed for spinning fall under different headings. Importers should ensure technical specifications and processing certificates clearly confirm the carded/combed state to avoid misclassification.
The primary downstream uses include nonwoven fabric manufacturing (for hygiene, medical, and filtration products), geotextile yarn production, and certain upholstery and carpet yarns. Industrial and construction applications tend to dominate over apparel, distinguishing polypropylene from acrylic or polyester staple fibers in the same chapter.
ImportsExports
Imports
—YoY · free account
Exports
—YoY · free account
Low of 1 reported month · imports
Low · free accountFewer than 6 of the last 12 months reported trade, or the latest month was under $500K; the trend chart is not shown for thin series.
Through September 2026 · imports 1 of 12 months reported, exports 2 of 12 months reported. Source: U.S. Census Bureau.
Trade Directory
List your company under HS 550640 — Polypropylene Staple Fibers, Carded or Combed for Spinning, so the companies trading it can find you. Be the first supplier listed.
Subheading 2 of 5 in heading 5506
Imports · September 2026
origin
customs district
destination
entry
rate provision · imports
None recorded for this period.
HS10 import codes under this HS6 parent, each with its own page. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Imports for consumption | Average duty rate | Dutiable Share | Duty Collected |
|---|---|---|---|---|---|
| 5506400000 | Polypro Synt Stp Fib Card Comb or Otrws Prsd Spng | $26K | 17.50% | 100.00% | $4K |