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The detailed production process

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Learn more about the production process of dry spun dralon® X and wet spun dralon® L.

Production process of dralon® X

dralon® X is a polyacrylonitrile fiber type (PAN fiber). It is produced by dry spinning. The production process is divided into four stages:

1.

Polymerisation
Acrylonitrile (ACN) is polymerised with other monomers (e.g. with a dyeing additive) to produce polyacrylonitrile (PAN).

2.

Dissolving
After washing and drying, the white PAN powder is stirred into dimethylformamide (DMF) and heated until it dissolves. The solution is then filtered.

3.

Spinning
The solution is extruded through spinnerets, producing spinning material. The solvent (DMF*) is evaporated from the solution using hot air during spinning (dry spinning process). It is then distilled and rused.

4.

Aftertreatment
At the aftertreatment stage the spinning material is washed, drawn, crimped, dried and lubricated. At this stage the characteristics properties, e.g. tenacity, elongation, titre, volume, handle, etc. are given to either staple fibre or tow.

Production process of dralon® L

dralon® L is a polyacrylnitrile fiber type (PAN-Fiber). It is produced by wet spinning. The production process is divided into four stages:

1.

Polymerisation
Acrylonitrile (ACN) is polymerised with other monomers to produce polyacrylonitrile (PAN).

2.

Dissolving
After washing and drying, the white PAN powder is stirred into dimethylacetamide (DMAC) and heated until it dissolves. The solution is then filtered.

3.

Spinning
The solution is extruded through spinnerets, producing spinning material. The solvent is evaporated from the solution using a water bath during spinning (wet spinning process). It is then distilled and rused.

4.

Aftertreatment
At the aftertreatment stage the spinning material is washed, drawn, crimped, dried and lubricated. At this stage the characteristics properties, e.g. tenacity, elongation, titre, volume, handle, etc. are given to the tow.

Information sheets

Here you can download the individual data conveniently as a PDF document.

Fibre comparison

Compare the excellent properties of dralon ® with other fibres.