Hackled Line

Refined Fibre

Long staple bast fibres that have been combed to remove short fibres and parallelized for spinning represent the highest quality raw material in linen production. The hackled line consists of these long, clean flax fibres that have passed through the series of pins on a hackling machine. This material is distinguished by its high degree of alignment and the absence of coarse straw or shive.

It is the input for producing fine, high count linen yarns.

Spinning Preparation

The combed fibres are formed into a continuous sliver on a spreadboard to prepare them for the drawing and spinning processes. These bundles of hackled line are placed overlapping each other to ensure a uniform linear density in the resulting sliver. Unlike short flax tow, this long fibre requires wet spinning to slide the individual fibres past each other, which yields a lustrous and strong yarn.

The combing process must be done carefully to avoid breaking the long bundles during the mechanical pin processing.

Quality Classification

Cleanliness and parallel alignment are assessed before the fibre enters the spinning frame. The yield of this material directly determines the efficiency of the mill. High grades are used for warp yarns.

Lower grades are spun into coarser weft yarns.

Raw plant fibers and precision metal components sit arranged inside an industrial flax processing and material sample presentation box.

Transaction Certificate Moisture Regain Non-Preferential Origin

Scope Verification Mechanics for European Flax Scutched Fiber

Verify European Flax scutched line through scope certificates, lot-matched transaction certificates, and rigorous hackling-to-spinning mass balance audits.

Mechanical metal rollers guide a continuous sheet of woven linen fabric through automated industrial machinery during textile manufacturing.

Desizing Loss Line Flax Heading 5309

Harmonized System Tariff Shift Rules for Linen Goods

Tariff shift for linen requires verifying mechanical transformation at each HS heading, from raw fiber to spun yarn and woven cloth, backed by lot-level mill logs.

Heavy vegetable fiber fabric secured with metal straps rests on a metal pallet inside an industrial warehouse facility.

Moisture Content Equilibrium Moisture Content Sorption Hysteresis

Standard Bale Moisture Verification and Commercial Mass Adjustment

Commercial mass adjustment corrects delivered flax invoice weight by calculating bone-dry mass via oven drying and applying standard regain allowances.

Raw flax fibre sits atop a weathered wooden trolley inside a dim textile manufacturing facility with mechanical equipment visible in the background.

Draft Ratio ASTM D1444 Technical Fiber Bundle

Evaluating Technical Flax Fiber Bundle Widths Using Optical Microscopy

Optical microscopy of resin-embedded cross sections determines true technical flax bundle widths, separating spinnable fine line from coarse drafting defects.

Natural flax fibers coiled in the foreground meet a V-shaped winding tool adorned with light blue spun yarn, set against a dark, indistinct background.

Scutched Flax Line Bale Store Audit Wet Spinning

Masters of Linen Scope against a Chinese Transformation Chain

Masters of Linen mandates 100% European transformation, making Chinese processing invalid; European Flax allows overseas processing with verified chain of custody.

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