Fibres; synthetic staple fibres, of aramids, not carded, combed or otherwise processed for spinning

HS v2017 Code: 550311

About fibres; synthetic staple fibres, of aramids, not carded, combed or otherwise processed for spinning

HS code 550311 covers the trade of synthetic staple fibers made from aramids, a type of high-performance synthetic material. These fibers are a crucial component in the production of a wide range of industrial and technical textiles, including protective clothing, aerospace composites, and advanced filtration systems. As a specialized segment of the broader synthetic fiber industry, the aramid staple fiber market plays a vital role in supporting the growth and innovation of numerous downstream industries that rely on their unique properties.

Production process

The production of aramid staple fibers typically involves a multi-step process. First, the aramid polymer is synthesized through a polycondensation reaction. The resulting polymer is then extruded into filaments, which are subsequently cut into short staple fibers of the desired length. These staple fibers are then processed through various mechanical operations, such as carding and drawing, to improve their alignment and uniformity, but they are not subjected to additional processing that would alter their inherent properties.

Production inputs

The primary inputs for the production of aramid staple fibers are the raw aramid polymer and the machinery required for the extrusion, cutting, and subsequent processing of the fibers. The aramid polymer is typically synthesized from aromatic dicarboxylic acids and aromatic diamines, using specialized chemical processes. The production equipment includes extruders, cutters, and fiber processing machinery, all of which must be designed to handle the unique characteristics of the aramid material.

Production outputs

The primary output of HS code 550311 is the aramid staple fiber itself, which is then consumed by manufacturers of a wide range of 540700 Woven fabrics of man-made filament yarn, 560311 Nonwovens, whether or not impregnated, coated, covered or laminated, and 630790 Other made-up articles, including dress patterns. These aramid fibers are valued for their exceptional strength, heat resistance, and chemical stability, making them essential components in the production of high-performance textiles, composites, and industrial filtration media.

Revisions to 550311

Classification codes are adjusted frequently. The code may have been revised or replaced between system versions. The table below shows the history (newest to oldest) of the code 550311. The most recent 1 version of this code (550311) is in the HS v2022 system:

This page shows a legacy version of code 550311 ( HS v2017).

Older versions

Family tree for fibres; synthetic staple fibres, of aramids, not carded, combed or otherwise processed for spinning

    graph LR
    A["<a href='/classifications/hs/v2017/55'>55: Man-made staple fibres</a>"]
A --> B["<a href='/classifications/hs/v2017/5503'>5503: Synthetic staple fibres, not carded, combed or otherwise processed for spinning</a>"]
B --> C["<a href='/classifications/hs/v2017/550311'>550311: Fibres; synthetic staple fibres, of aramids, not carded, combed or otherwise processed for spinning</a>"]

    B --> D["<a href='/classifications/hs/v2017/550319'>550319: Fibres; synthetic staple fibres, of nylon or other polyamides other than aramids, not carded, combed or otherwise processed for spinning</a>"]
B --> E["<a href='/classifications/hs/v2017/550320'>550320: Fibres; synthetic staple fibres, of polyesters, not carded, combed or otherwise processed for spinning</a>"]
B --> F["<a href='/classifications/hs/v2017/550330'>550330: Fibres; synthetic staple fibres, acrylic or modacrylic, not carded, combed or otherwise processed for spinning</a>"]
B --> G["<a href='/classifications/hs/v2017/550340'>550340: Fibres; synthetic staple fibres, of polypropylene, not carded, combed or otherwise processed for spinning</a>"]
B --> H["<a href='/classifications/hs/v2017/550390'>550390: Fibres; synthetic staple fibres, of synthetic materials n.e.c. in heading no. 5503, not carded, combed or otherwise processed for spinning</a>"]

    

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    classDef level6 color:#000,fill:#f1c40f,stroke:#333,stroke-width:1px
    classDef highlight color:#000,fill:#fff,stroke:#000,stroke-width:5px



  %% Apply classes
  class A level2
class B level4
class C level6
class D level6
class E level6
class F level6
class G level6
class H level6

  class C highlight

  %% class A level1
  %% class B,C level2
  %% class D,E,F,G,H,I level2
  %% class J,K,L,M,N,O,P level3
  %% class C highlight