Chapter 5503 — Customs Tariff Headings

5503.20.00Of polyesters

5503.30.00Acrylic or modacrylic

5503.40.00Of polypropylene

5503.90.00Other

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Products classified under Tariff item 55.03

Kevlar 49 Aramid Staple Fibers

High-modulus Kevlar 49 aramid staple fibers in raw, unprocessed form, not carded, combed, or otherwise prepared for spinning. These fibers are engineered for maximum stiffness and are primarily used in aerospace composites and other structural applications. They fall under tariff item 5503.11.00 as synthetic staple fibers of aramids.

Kevlar Aramid Staple Fibers

Short-cut Kevlar aramid staple fibers, not carded, combed, or processed for spinning, used for reinforcement in composites and protective textiles. These fibers are in a raw state and meet the definition of synthetic staple fibers of aramids under tariff item 5503.11.00.

Meta-Aramid Firefighter Fiber

Meta-aramid staple fibers in raw, unprocessed state, designed for firefighter turnout gear fabrics. These fibers provide inherent flame resistance and meet NFPA 1971 standards. They are classified under tariff item 5503.11.00 as synthetic staple fibers of aramids, not carded or combed.

Nomex 410 Staple Fibers

Standard Nomex 410 meta-aramid staple fibers, not carded or combed, used for thermal insulation fabrics. These fibers provide inherent flame resistance up to 400°C and are classified under tariff item 5503.11.00 as unprocessed aramid polyamide staples.

Nomex Aramid Staple Fibers

Nomex meta-aramid staple fibers, unprocessed for spinning, ideal for high-temperature resistant fabrics such as firefighter gear and industrial felts. These fibers are classified under tariff item 5503.11.00 due to their aramid polyamide composition and unprocessed state.

Para-Aramid Staple Fiber Blend Base

Unprocessed para-aramid staple fibers designed as a blend component for cut-resistant gloves. These fibers have high tenacity for personal protective equipment and are classified under tariff item 5503.11.00 as raw aramid staples.

Technora Aramid Staple Fibers

Teijin Technora hybrid aramid staple fibers, raw and unprocessed, used in automotive composites and marine ropes. These fibers combine para and meta properties and are classified under tariff item 5503.11.00 as aramid synthetic staples not further processed.

Twaron Aramid Staple Fibers

Twaron para-aramid staple fibers, not carded or combed, for ballistic protection and rope reinforcement. These unprocessed synthetic aramid staples are known for ultra-high tensile strength and are classified under tariff item 5503.11.00.

Bright Polyamide Staple Fibers for Carpet

Bright polyamide staple fibers, not carded, combed or otherwise processed for spinning, are designed for carpet yarn manufacturing. These fibers are synthetic staple fibres of nylon or other polyamides, specifically classified as 'Other' under tariff item 5503.19.00. They are presented in an unprocessed state, ready for further processing in textile manufacturing.

Industrial Nylon Staple Fibers 3 Denier

Industrial nylon staple fibers of 3 denier, unprocessed and not combed, are used in applications like ropes and filters. These synthetic staple fibres of nylon or other polyamides are classified under tariff item 5503.19.00 as 'Other' polyamide staple fibers. They are presented in bulk form, not carded or combed, ready for spinning or direct use.

Nylon 6,6 Tow for Cutting

Nylon 6,6 polyamide staple fiber tow, unprocessed and awaiting cutting into discrete staple lengths for spinning, is classified under tariff item 5503.19.00. This tow is of synthetic staple fibres of nylon or other polyamides, specifically 'Other' polyamide types. It is not carded, combed, or otherwise processed for spinning.

Nylon 6 Staple Fibers

Unprocessed synthetic staple fibers made from nylon 6 polyamide, cut to lengths suitable for spinning into yarns, are classified under tariff item 5503.19.00. These fibers are neither carded nor combed, falling under 'Other' nylon or polyamide staple fibers. They are presented in bulk for textile manufacturing.

Nylon Staple Fiber Bale 51mm Length

Baled nylon polyamide staple fibers with a 51mm staple length for worsted spinning systems are classified under tariff item 5503.19.00. These synthetic staple fibres of nylon or other polyamides are unprocessed, not carded or combed. They are presented in bales for textile processing.

Polyamide 66 Staple Fibers 1.5 Denier

Fine 1.5 denier polyamide 66 staple fibers, unprocessed for spinning, are used in apparel and technical textiles. These synthetic staple fibres of nylon or other polyamides are classified under tariff item 5503.19.00 as 'Other' polyamide staple fibers. They are not carded or combed, presented in bulk.

Semi-Dull Nylon 66 Staples 2 Denier

Semi-dull 2 denier nylon 66 staple fibers for apparel fabrics, neither carded nor combed, are classified under tariff item 5503.19.00. These synthetic staple fibres of nylon or other polyamides are 'Other' polyamide staple fibers. They are unprocessed and ready for textile manufacturing.

Antimony-Free Polyester Staple Fiber 2.5 Denier

Antimony-free polyester staple fibers, 2.5 denier, 51mm length, produced with a phosphorus catalyst for eco-friendly manufacturing. These are raw, unprocessed synthetic staple fibers not carded, combed, or otherwise prepared for spinning, used as input for apparel yarn production.

Bright Polyester Staple Fiber 2.25 Denier 38mm

Bright finish polyester staple fibers, 2.25 denier, 38mm staple length, unprocessed for fine yarn spinning in shirting fabrics. These are raw synthetic fibers in their post-polymerization and cutting state, not carded, combed, or otherwise prepared for spinning.

Conductive Polyester Staple Fiber 3 Denier

Conductive polyester staple fibers, 3 denier, 44mm length, with carbon particle doping for antistatic yarns. These are unprocessed staple fibers in raw form, not carded, combed, or otherwise prepared for spinning, used to produce dissipative textiles.

Dope-Dyed Black Polyester Staple Fiber 5D

Dope-dyed black polyester staple fibers, 5 denier, 64mm length, with colorant extruded during polymerization. These are unprocessed staple fibers for spinning solution-dyed yarns, not carded, combed, or otherwise prepared for spinning.

Polyester 1.5 Denier Staple Fiber

Polyester staple fibers of 1.5 denier fineness, cut to 38mm length, not carded, combed, or processed for spinning. These are raw synthetic polyester materials used as input for yarn production in textile manufacturing.

Polyester 3 Denier White Staple Fiber

White polyester staple fibers measuring 3 denier, 51mm length, suitable for spinning into apparel yarns. These are unprocessed synthetic fibers directly from polymerization and cutting processes, not carded, combed, or otherwise prepared for spinning.

Polyester Bicomponent Staple Fiber 4.5 Denier

Bicomponent sheath-core polyester staple fibers, 4.5 denier, 76mm length for thermal bonding nonwovens. These are raw unprocessed fibers before any thermal activation, not carded, combed, or otherwise prepared for spinning.

Polyester Flame Retardant Staple Fiber 2D

Flame retardant polyester staple fibers, 2 denier, 51mm length, with copolymer additives for fire resistance. These are unprocessed fibers for spinning into protective apparel yarns, not carded, combed, or otherwise prepared for spinning.

Polyester Gel Spun Staple Fiber 1.5 Denier

Gel-spun ultra-high molecular weight polyester staple fibers, 1.5 denier, cut to 76mm for cut-resistant yarns. These are raw staple fibers before any drawing process, not carded, combed, or otherwise prepared for spinning.

Polyester High Tenacity Staple Fiber 2 Denier

High tenacity polyester staple fibers, 2 denier, 102mm length for tire cord and safety belt yarns. These are unprocessed staple fibers with special polymerization for strength, not carded, combed, or otherwise prepared for spinning.

Polyester Hollow Conjugated Staple Fiber 4D

Hollow conjugated polyester staple fibers, 4 denier, 64mm length, providing bulk and insulation properties for fillings. These are not carded or combed, raw for spinning into bulk yarns, and unprocessed for spinning.

Polyester Microfiber Staple 0.8 Denier 38mm

Ultra-fine polyester microfiber staple, 0.8 denier, 38mm length for suede-like fabrics and filtration media. These are raw unprocessed fibers for specialized yarn spinning, not carded, combed, or otherwise prepared for spinning.

Polyester Recycled Staple Fiber 6 Denier

Recycled polyester staple fibers from PET bottle flake, 6 denier, 120mm length for technical textiles. These are not processed beyond cutting, suitable for spinning coarse yarns, and unprocessed for spinning.

Polyester Super High Bulk Staple Fiber 7 Denier

Super high bulk crimp polyester staple fibers, 7 denier, 120mm length for upholstery and blanket yarns. These are raw unprocessed fibers with high crimp development potential, not carded, combed, or otherwise prepared for spinning.

Semi-Dull Polyester Staple Fiber 1.2 Denier 32mm

Semi-dull polyester staple fibers, ultra-fine 1.2 denier, 32mm length for microfiber yarn production. These are raw unprocessed fibers for spinning delicate fabrics like suiting, not carded, combed, or otherwise prepared for spinning.

Acrylic Staple for Carpet Yarn

Coarse denier acrylic staple fibers optimized for solution-dyed carpet yarns, supplied in unprocessed bales. These fibers are not carded, combed, or otherwise processed for spinning, and are classified under tariff item 5503.30.00 as acrylic staple fibers.

Acrylic Wool-Blend Staple Fiber

Short-cut acrylic staple fibers blended to mimic wool, unprocessed for spinning into yarn for knitwear. These fibers are not carded, combed, or otherwise processed for spinning, and are classified under tariff item 5503.30.00 as acrylic staple fibers.

Bicomponent Acrylic Staple Fiber

Side-by-side bicomponent acrylic staple fiber for self-crimping yarns, cut unprocessed. These fibers are not carded, combed, or otherwise processed for spinning, and are classified under tariff item 5503.30.00 as acrylic staple fibers.

Colored Acrylic Staple Fiber

Solution-dyed acrylic staple fibers in various colors, cut but not processed further for spinning. Dyeing does not constitute processing for spinning, so these fibers remain classified under tariff item 5503.30.00 as acrylic staple fibers.

Fine-Denier Acrylic Staple Fiber

Ultra-fine denier (1-2 den) acrylic staple fibers for soft fabrics like babywear, shipped unprocessed. These fibers are not carded, combed, or otherwise processed for spinning, and are classified under tariff item 5503.30.00 as acrylic staple fibers.

High-Bulk Acrylic Staple Fiber

Crimped high-bulk acrylic staple for bulky yarns in sweaters, unprocessed direct from extrusion. Crimping is not considered processing for spinning, so these fibers are classified under tariff item 5503.30.00 as acrylic staple fibers.

Modacrylic Flame-Retardant Staple Fiber

Modacrylic staple fibers engineered for fire resistance, used in protective apparel, supplied unprocessed in bales. These fibers are not carded, combed, or otherwise processed for spinning, and are classified under tariff item 5503.30.00 as modacrylic staple fibers.

Modacrylic Protective Fiber Bale

Modacrylic staple fibers for firefighter turnout gear linings, unprocessed for FR yarn spinning. These fibers are not carded, combed, or otherwise processed for spinning, and are classified under tariff item 5503.30.00 as modacrylic staple fibers.

Modacrylic Staple for Filter Media

Chemical-resistant modacrylic staple fibers for industrial air filters, unprocessed bales ready for nonwoven processing. These fibers are not carded, combed, or otherwise processed for spinning, and are classified under tariff item 5503.30.00 as modacrylic staple fibers.

Raw Acrylic Staple Fiber Bale

Unprocessed acrylic staple fibers, typically 1.5 to 3 inches long, baled for spinning into yarn. These fibers are not carded, combed, or otherwise processed for spinning, and are classified under tariff item 5503.30.00 as acrylic staple fibers.

Bicomponent PP/PE Staple Fiber 2 Denier

Bicomponent staple fibers with a polypropylene core and polyethylene sheath, measuring 2 denier, in an unprocessed state for use in thermal bonding nonwovens. The polypropylene content predominates, so the fiber is classified as polypropylene staple fiber under this tariff item.

Bright Polypropylene Staple Fiber 2 Denier

Undyed, bright polypropylene staple fibers of 2 denier fineness and 44mm length, in a raw state for carpet backing and upholstery. These fibers are not carded, combed, or otherwise processed for spinning, so they fall under the tariff item for unprocessed polypropylene staple fibers.

Crimped Polypropylene Staple Fiber 3.5 Denier

Highly crimped polypropylene staple fibers of 3.5 denier and 44mm length, unprocessed for bulked nonwovens and insulation. Crimping does not constitute processing for spinning, so the fiber remains classified as unprocessed polypropylene staple fiber.

Flame Retardant Polypropylene Staple 2.5 Denier

Flame retardant polypropylene staple fibers of 2.5 denier and 51mm length, in raw form for automotive felts and upholstery. The flame retardant treatment does not alter the fiber's classification as unprocessed polypropylene staple fiber, as it is not processed for spinning.

Polypropylene Fiber for Nonwoven Hygiene 1.2 Denier

Fine 1.2 denier polypropylene staple fibers of 35mm length, unprocessed for spunmelt nonwovens in diapers and sanitary products. These fibers are not carded, combed, or otherwise processed for spinning, so they fall under the tariff item for unprocessed polypropylene staple fibers.

Polypropylene Staple Fiber 1.5 Denier

Unprocessed polypropylene staple fibers with a fineness of 1.5 denier, cut to 38mm length, used primarily for nonwoven fabrics and filtration media. These synthetic fibers are not carded, combed, or otherwise processed for spinning, so they are classified as polypropylene staple fibers under this tariff item.

Polypropylene Staple for Ropes 6 Denier

Coarse 6 denier polypropylene staple fibers of 102mm length, unprocessed for twisted rope and twine production. These fibers are not carded, combed, or otherwise processed for spinning, so they fall under the tariff item for unprocessed polypropylene staple fibers.

PP Staple Fiber for Geotextiles 3 Denier

Polypropylene staple fibers at 3 denier fineness and 51mm staple length, unprocessed, designed for geotextile and civil engineering applications like soil stabilization. These fibers are not carded, combed, or otherwise processed for spinning, so they are classified as polypropylene staple fibers under this tariff item.

Superfine PP Microfiber 0.8 Denier

Ultrafine 0.8 denier polypropylene microfiber staples of 29mm length, for premium filtration and apparel interlinings. These fibers are in an unprocessed state, not carded, combed, or otherwise processed for spinning, so they fall under the tariff item for unprocessed polypropylene staple fibers.

UV-Resistant PP Staple Fiber 4 Denier

Polypropylene staple fibers treated for UV resistance, 4 denier, 65mm staple length, unprocessed, for agricultural fleece and ropes. The UV treatment does not constitute processing for spinning, so these fibers are classified as unprocessed polypropylene staple fibers under this tariff item.

High-Tenacity Vinyon Staple Fibers

High-tenacity vinyon staple fibers, 2.5 denier x 44mm, in raw form without carding, combing, or other spinning preparation. These synthetic staple fibers are made from vinyl chloride copolymers and are classified under this tariff item as 'other' synthetic staple fibres not elsewhere specified.

Industrial Vinyon Staple Fibers 3 Denier

Coarse vinyon staple fibers at 3 denier fineness, 64mm length, designed for non-woven industrial felts. These fibers are not carded, combed, or processed for spinning, and are classified under this tariff item as other synthetic staple fibres.

Vinyon Bleached White Staple Fibers

Bleached white vinyon staple fibers, 1.7 denier x 40mm, not carded or processed beyond dyeing. These synthetic staple fibres are classified under this tariff item as 'other' unprocessed synthetic staple fibres, as bleaching does not constitute processing for spinning.

Vinyon Flame-Retardant Staple Fibers

Unprocessed vinyon staple fibers designed for flame-retardant applications, 2.0 denier x 51mm, straight cut without crimp. These synthetic staple fibres are not carded, combed, or otherwise processed for spinning, and are classified under this tariff item as 'other' synthetic staple fibres.

Vinyon Staple Fibers 1.5 Denier

Raw vinyon staple fibers with a fineness of 1.5 denier, cut to 38mm length, not carded, combed, or processed for spinning. These fibers are derived from vinyl chloride-vinyl acetate copolymer and are classified under this tariff item as 'other' synthetic staple fibres.

Vinyon Staple Fibers for Medical Bandages

Fine vinyon staple fibers, 1.2 denier x 32mm, untreated and unprocessed, intended for blending into medical bandage yarns. These synthetic staple fibres are not carded, combed, or otherwise processed for spinning, and are classified under this tariff item as 'other' synthetic staple fibres.