Flax field after harvest — Union GX255 Rafale baler and bales of retted flax straw

RUTHENIA ALBA · Technology

From field to fibre

The complete fibre flax production chain — from seed in the soil to finished fabric. Eleven stages where agronomy meets harvesting and processing technology.

Sowing·Pulling·Retting·Scutching·Fibre·Fabric
01Pole · wiosna
01

Sowing

Spring sowing of flax. It is sown densely, because a dense stand forces tall, weakly branched stems — and these give the longest fibre.

ARVALIS: plant density 1,500–1,800 plants/m²
02Stem · fibre
02

Growth

The plant is grown for its fibre. Flax is pulled at technical maturity, when the stem is fully formed and the fibre has reached its full length.

ARVALIS: pulling at 900–1,000 °C accumulated temperature from sowing
The Union GX220 puller pulls flax with its roots during harvest03
03

Pulling

Flax is pulled with its roots, not cut — mowing would leave the fibre in the lower part of the stem. This is the basic difference from cereals.

GX220 puller ARVALIS · Union technical documentation
Flax stalks spread in the field during field retting04
04

Field retting

The stalks lie in the field. Micro-organisms break down the pectins binding the fibre to the woody part of the stem — this is retting, the step that determines fibre quality. The process depends on the weather.

ARVALIS
Union GX240 — self-propelled two-row flax swath turner05
05

Turning the swaths

For retting to be even on both sides of the swath, the swath must be turned. The turner rotates two swaths at once, keeping retting quality uniform across the field.

GX240 turner Union technical documentation
The Union GX255 Rafale round baler forms retted flax straw bales in the field06
06

Baling

Retted flax straw is gathered from the field and formed into bales of uniform structure — ready for transport and processing.

GX255 Rafale baler Union technical documentation
07Pole → lniarnia
07

Transport

Bales of retted flax straw go to the processing plant — the scutching mill — where fibre recovery begins.

Flax processing hall — long fibre scutching line08
08

Scutching

Beating and scutching separate the fibre from the woody part of the stem. Long fibre is produced, alongside short fibre and shives.

Long flax fibre — the most valuable textile raw material09
09

Long fibre

Long fibre is the most valuable textile raw material from flax — it determines the value of the whole chain.

CELC
10Fibre → thread
10

Yarn

Long fibre is spun into flax yarn. Poland remains a significant yarn producer — five spinning mills operate here.

Polish Flax and Hemp Chamber
11Yarn → fabric
11

Fabric

Yarn is used to make woven and knitted linen fabrics. Textiles account for around 90% of fibre flax uses; the rest goes to composites and technical materials.

CELC

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Sources: ARVALIS · Alliance for European Flax-Linen and Hemp / CELC · Polish Flax and Hemp Chamber · UNION technical documentation.