Chapter 5501 — Customs Tariff Headings

5501.20.00Of polyesters

5501.30.00Acrylic or modacrylic

5501.40.00Of polypropylene

5501.90.00Other

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Products classified under Tariff item 55.01

Aramid Filament Tow for Bulletproof Vests

Aramid filament tow made from para-aramid fibers such as Kevlar, consisting of parallel filaments of uniform length exceeding 2 meters, with less than 5 turns per meter twist. It is used as an intermediate material for spinning yarns that are woven into high-strength ballistic fabrics for bulletproof vests. This product meets the specifications of Chapter 55 Note 1 for synthetic filament tow of aramids.

Aramid Filament Tow for Drone Frames

Lightweight aramid filament tow used in hybrid carbon-aramid composites for drone and UAV structural frames. The tow consists of continuous aramid filaments with low twist, suitable for prepregging and filament winding. It qualifies as synthetic filament tow of aramids under heading 55.01.

Aramid Tow for Cut-Resistant Gloves

Aramid filament tow intended for blending with other fibres to produce yarns for cut-resistant industrial gloves and sleeves. The tow is supplied in hanks for subsequent spinning, with filaments of uniform length and minimal twist. It meets the definition of synthetic filament tow of aramids in heading 55.01.

Aramid Tow for Oil Rig Ropes

Heavy-duty aramid filament tow supplied as untwisted bundles for manufacturing deep-sea oil rig mooring lines and drilling cables. The tow consists of continuous aramid filaments with high tenacity and low elongation, suitable for rope-making applications. It is classified as synthetic filament tow of aramids under heading 55.01.

Armos Aramid Tow for Military Helmets

High-performance aramid filament tow of the Armos type, used for manufacturing ballistic helmet shells. The tow consists of parallel aramid filaments with high modulus and thermal stability, meeting the specifications for synthetic filament tow. It is classified under heading 55.01 as aramid filament tow.

Conex Aramid Tow for Electrical Insulation

Meta-aramid filament tow of the Conex type, used for high-voltage electrical insulation wraps and slot liners. The tow consists of continuous meta-aramid filaments with excellent dielectric properties and heat resistance. It qualifies as synthetic filament tow of aramids under heading 55.01.

Heracron Aramid Tow for Conveyor Belts

Para-aramid filament tow of the Heracron type, used to strengthen conveyor belts in mining operations. The tow consists of high-tenacity aramid filaments with low creep and high cut resistance. It meets the Chapter 55 Note 1 specifications for synthetic filament tow of aramids.

Kevlar 49 Aramid Tow for Tennis Rackets

High-tenacity Kevlar 49 aramid filament tow used to reinforce composite tennis racket frames and sports equipment. The tow consists of continuous aramid filaments with high modulus and low density, suitable for prepreg production. It is classified as synthetic filament tow of aramids under heading 55.01.

Kevlar Aramid Tow for Aerospace Composites

High-performance aramid filament tow, branded as Kevlar, designed for reinforcing aerospace composite materials such as aircraft skins and rocket components. The tow consists of continuous para-aramid filaments with high tensile strength and thermal stability. It meets the definition of synthetic filament tow of aramids in heading 55.01.

Meta-Aramid Tow for Thermal Blankets

Meta-aramid filament tow used for manufacturing non-woven thermal insulation blankets in aerospace and rail applications. The tow consists of continuous meta-aramid filaments with inherent flame resistance and heat stabilization. It qualifies as synthetic filament tow of aramids under heading 55.01.

Nomex Aramid Tow for Firefighter Gear

Meta-aramid filament tow such as Nomex, used to spin yarns for flame-resistant fabrics in firefighter turnout gear and protective clothing. The tow consists of continuous meta-aramid filaments with inherent flame resistance and high thermal stability. It is classified as synthetic filament tow of aramids under heading 55.01.

Para-Aramid Tow for Sailcloth

High-modulus para-aramid filament tow for premium sailcloth and yacht rigging fabrics. The tow consists of continuous aramid filaments with low creep and high tensile strength, suitable for weaving into marine fabrics. It meets the specifications for synthetic filament tow of aramids in heading 55.01.

Technora Aramid Tow for Automotive Hoses

Hybrid aramid filament tow such as Technora, reinforcing rubber hoses and belts in automotive and heavy machinery applications. The tow consists of continuous aramid filaments with high fatigue resistance and chemical stability. It qualifies as synthetic filament tow of aramids under heading 55.01.

Teijin Aramid Tow for Wind Turbine Blades

Teijin Twaron or Technora aramid filament tow used to reinforce wind turbine blade composites for fatigue resistance. The tow consists of continuous para-aramid filaments with high modulus and low weight. It is classified as synthetic filament tow of aramids under heading 55.01.

Twaron Aramid Filament Tow for Ropes

Para-aramid filament tow such as Twaron, ideal for twisting into high-strength ropes and cables for marine and industrial mooring. The tow consists of continuous aramid filaments with low stretch and high tensile strength. It meets the definition of synthetic filament tow of aramids in heading 55.01.

Bio-Based Polyamide Tow

> Bio-based polyamide filament tow, such as PA11 or PA10.10, consists of parallel synthetic filaments of uniform length exceeding 2 meters, with a total linear density over 20,000 decitex. It is used as a precursor for sustainable textile fibers and falls under this tariff item as "other" polyamide filament tow, regardless of its bio-based origin.

High-Bulk Nylon Filament Tow

> High-bulk nylon filament tow is a synthetic polyamide tow engineered to expand after crimping, used in filling and padding applications. It is supplied in continuous filament form, meeting the specifications of chapter note 1, and is classified as "other" polyamide filament tow under this tariff item because it is not a high-tenacity yarn.

Industrial Nylon Tow for Carpet Fibers

> Industrial nylon tow for carpet fibers is a heavy-denier polyamide filament tow supplied in bales, designed for crimping and cutting into staple fibers for cut-pile carpets. It is not high-tenacity and remains in continuous tow form, meeting the criteria for heading 55.01 and classified under this tariff item as "other" polyamide tow.

Nylon 6,6 Filament Tow

> Nylon 6,6 filament tow is a continuous polyamide tow made from nylon 6,6, used for conversion into fibers for industrial fabrics and upholstery. It meets the chapter note 1 specifications for tow and is classified as "other" polyamide filament tow under this tariff item, as it is not high-tenacity.

Nylon 6 Filament Tow

> Nylon 6 filament tow is a synthetic polyamide tow made from nylon 6, used primarily for crimping into staple fibers for apparel and carpet applications. It is supplied in continuous form with a total linear density over 20,000 decitex, meeting chapter note 1, and is classified as "other" polyamide filament tow under this tariff item.

Nylon Tow for Brush Bristles

> Nylon tow for brush bristles is a coarse polyamide filament tow used to manufacture brush and broom filaments. It is supplied uncrimped and in continuous tow form, meeting the chapter note 1 criteria, and is classified as "other" polyamide filament tow under this tariff item.

PA66 Tow for Tire Cord Precursor

> PA66 tow for tire cord precursor is a polyamide 66 filament tow intended for further drawing into tire reinforcement cords. It is non-high-tenacity and supplied in continuous tow form, meeting chapter note 1, and is classified as "other" polyamide filament tow under this tariff item.

PA6 Filament Tow for Apparel Fibers

> PA6 filament tow for apparel fibers is a fine-denier polyamide 6 tow used for spinning into yarns for hosiery and knitwear. It is in a pre-crimping stage, meeting chapter note 1 specifications, and is classified as "other" polyamide filament tow under this tariff item.

Polyamide 11 Filament Tow

> Polyamide 11 filament tow, such as Rilsan, is a bio-based polyamide tow used in technical textiles and brush fibers due to its flexibility. It is supplied in continuous tow form, meeting chapter note 1, and is classified as "other" polyamide filament tow under this tariff item, excluding high-tenacity variants.

Specialty Polyamide Tow for Ropes

> Specialty polyamide tow for ropes is a filament tow of polyamide intended for twisting into rope and netting yarns. It remains in unprocessed tow form, meeting chapter note 1, and is classified as "other" polyamide filament tow under this tariff item.

Antibacterial Polyester Tow

Polyester filament tow infused with silver ions for antibacterial properties, used in medical textiles. The silver treatment is a functional modification that does not alter the base classification as synthetic filament tow of polyesters.

Bicomponent Polyester Filament Tow

Bicomponent polyester filament tow with core-sheath or side-by-side structure for enhanced crimp in staple fibers. It is fundamentally polyester filament tow, meeting the criteria of heading 55.01, and the bicomponent nature does not change the classification.

Bio-Based Polyester Tow

Bio-based polyester tow made from plant-derived PET, used for sustainable staple fibers. Chemically identical to conventional polyester, it is classified as synthetic filament tow of polyesters under heading 55.01.

Bright Polyester Tow for Fillers

Bright polyester filament tow with high luster, supplied for cutting and crimping into staple fibers for pillow and cushion stuffing. It is in continuous filament tow form of polyesters, meeting heading 55.01 criteria.

Coarse Denier Polyester Tow for Carpet Fibers

High denier polyester filament tow (15+ dpf) for cutting into staple fibers for carpet backing and upholstery. As synthetic filament tow of polyesters, it falls under heading 55.01, regardless of denier.

Conductive Polyester Filament Tow

Polyester tow with carbon or metal fibers for anti-static properties in cleanroom textiles. The conductive additives are functional modifications; the product remains synthetic filament tow of polyesters under heading 55.01.

Fine Denier Polyester Tow for Apparel Fibers

Fine denier polyester filament tow (2-5 dpf) for cutting into staple fibers for apparel fabrics. It is polyester synthetic filament tow, meeting heading 55.01 criteria regardless of the fine denier.

Flame-Retardant Polyester Tow

Polyester filament tow with flame-retardant additives for staple in fire-resistant upholstery and uniforms. The FR properties do not alter the base classification as polyester synthetic filament tow under heading 55.01.

High-Tenacity Polyester Tow for Industrial Yarns

High-tenacity polyester filament tow for conversion into staple fibers for industrial applications like tire reinforcement. It is classified under heading 55.01 as polyester synthetic filament tow, with high strength being a performance characteristic.

Industrial Grade Polyester Tow for Ropes

Heavy-duty polyester filament tow for conversion to staple fibers in ropes, nets, and geotextiles. As polyester tow in continuous filament form, it falls under heading 55.01, with high strength for industrial end-uses.

Microfiber Polyester Tow

Ultra-fine denier polyester filament tow (under 1 dpf) for microfiber staple in cleaning cloths and apparel. It is polyester synthetic filament tow, classified under heading 55.01, enabling high-absorbency textiles.

Polyester Filament Tow for Staple Fiber Production

Uncrimped polyester filament tow of continuous polyethylene terephthalate filaments, used for cutting into staple fibers for yarn spinning. It falls under heading 55.01 as synthetic filament tow of polyesters.

Polyester Top Tow for Worsted Spinning

Polyester filament tow processed into aligned 'top' form for worsted spinning, used in wool-like yarns for suiting. It remains synthetic polyester filament tow before full staple conversion, falling under heading 55.01.

Recycled Polyester Filament Tow

Filament tow produced from recycled polyethylene terephthalate (rPET) bottles, used for sustainable staple fiber in eco-textiles. It is classified under heading 55.01 for its polyester composition in continuous tow form.

Solution-Dyed Polyester Tow

Polyester filament tow with color pigments integrated during polymerization for fade-resistant staple fibers in upholstery. It is classified under heading 55.01 as polyester synthetic filament tow, regardless of dope-dyeing.

Acrylic Bulked Continuous Tow

Texturized acrylic filament tow with bulked crimp for direct conversion to high-loft batts or yarn. Despite bulking, it remains untwisted and meets Chapter 55 Note 1, classified under tariff item 5501.30.00 as acrylic or modacrylic tow.

Acrylic Continuous Filament Tow for Blanket Production

Acrylic continuous filament tow, heavy-denier, used for manufacturing blanket yarns and fillings. This synthetic filament tow meets the specifications of Chapter 55 Note 1, including length over 2 m, twist less than 5 turns per metre, and total measurement over 20,000 decitex, and is classified under tariff item 5501.30.00 as acrylic or modacrylic.

Acrylic Filament Tow for Carpet Yarn

Unprocessed acrylic filament tow consisting of continuous filaments for conversion into carpet yarn. This tow meets the Chapter 55 Note 1 criteria for synthetic filament tow, with parallel filaments of uniform length, and is classified under tariff item 5501.30.00 as acrylic or modacrylic tow.

Acrylic Filament Tow for Hand-Knitting Yarns

Coarse acrylic tow supplied to yarn spinners for creating bulky hand-knitting and craft yarns. This synthetic filament tow remains untextured and ready for drafting, meeting the specifications of Chapter 55 Note 1 for tow, and is classified under tariff item 5501.30.00 as acrylic or modacrylic.

Acrylic Filament Tow for Upholstery Fabrics

Durable acrylic tow with high tenacity for spinning into yarns used in upholstery and outdoor fabrics. This continuous untwisted filament tow meets Chapter 55 Note 1 and is classified under tariff item 5501.30.00 as acrylic or modacrylic tow.

Acrylic Microdenier Tow

Ultra-fine microdenier acrylic filament tow (under 1 denier per filament) for microfiber fabrics and filtration. This specialty fine-denier tow meets Chapter 55 Note 1 and is classified under tariff item 5501.30.00 as acrylic or modacrylic tow.

Acrylic Tow for Artificial Fur Production

Fine-denier acrylic filament tow mimicking fur texture for artificial fur fabrics in fashion and upholstery. This unprocessed tow form meets Chapter 55 Note 1 and is classified under tariff item 5501.30.00, with high crimp simulating natural fur pile.

Acrylic Tow for Fishing Net Production

Durable acrylic filament tow for twine and rope used in fishing nets and marine applications. This unprocessed synthetic acrylic tow meets Chapter 55 Note 1 specifications and is classified under tariff item 5501.30.00, despite its intended use in cordage.

Acrylic Tow for Hand-Knitting Yarns

High-bulk acrylic filament tow designed for conversion into soft, bulky yarns for hand-knitting and craft projects. This 'other' synthetic tow with specific crimp and denier for yarn spinning meets Chapter 55 Note 1 and is classified under tariff item 5501.30.00.

Acrylic Tow for Medical Textiles

Biocompatible acrylic filament tow for wound dressings and surgical fabrics with antimicrobial properties. This product falls under tariff item 5501.30.00 as 'other' acrylic tow, covering synthetic filament tow of acrylic not dedicated to carbon fiber precursor use.

Acrylic Tow for Nonwoven Applications

Acrylic filament tow optimized for thermal bonding in nonwoven fabrics for geotextiles and hygiene products. This product is classified under tariff item 5501.30.00 as 'other' acrylic tow, before mechanical processing into nonwovens.

Acrylic Tow for Wet-Spun Yarns

Acrylic filament tow specifically prepared for wet-spinning processes into fine count yarns. This intermediate product in continuous tow delivery form falls under tariff item 5501.30.00 as 'other' acrylic tow.

Acrylic Tow for Wig and Hair Extension Manufacturing

High-luster acrylic filament tow used as base material for synthetic wigs, hairpieces, and extensions. This unprocessed synthetic tow of acrylic filaments, before being cut or styled, meets Chapter 55 Note 1 and is classified under tariff item 5501.30.00.

Acrylonitrile Filament Tow for Carbon Fiber Precursor

Acrylonitrile filament tow containing 92% or more acrylonitrile units, with fewer than 70,000 filaments each of 1.59 decitex or less, used as precursor material for carbon fiber production. This tow meets the precise specifications of tariff item 5501.30.00, which covers synthetic filament tow of acrylic or modacrylic.

Bicomponent Acrylic/Modacrylic Tow

Core-sheath bicomponent tow combining acrylic core with modacrylic sheath for self-crimping and bonding. This composite acrylic/modacrylic tow is classified under tariff item 5501.30.00 as 'other' acrylic or modacrylic tow.

Carbon Fiber Precursor Acrylonitrile Tow Bundle

Bundled acrylonitrile filament tow with at least 92% acrylonitrile units, fewer than 70,000 filaments, and each filament at 1.59 decitex or less, in separable form for carbonization. This product falls under tariff item 5501.30.00 as acrylic synthetic filament tow meeting the chapter's specifications.

Colored Acrylic Filament Tow

Solution-dyed acrylic filament tow in various colors for direct yarn production without additional dyeing. Under tariff item 5501.30.00 as 'other' acrylic tow, the color is integral to the polymer matrix.

Colored Acrylic Filament Tow for Craft Yarns

Pre-colored acrylic tow in various shades for arts, crafts, and novelty yarn production. Despite coloration, this remains synthetic filament tow under tariff item 5501.30.00, as the colour is integral to the polymer and does not alter its tow classification.

Fine-Denier Acrylonitrile Tow for Aerospace Carbon Fiber

Precision-engineered acrylonitrile tow with over 92% acrylonitrile units, fewer than 70,000 filaments at a maximum of 1.59 decitex, optimized for aerospace-grade carbon fiber precursors. This acrylic filament tow is classified under tariff item 5501.30.00, which covers synthetic filament tow of acrylic or modacrylic.