Jacquard Harness Setup and Repeat Width Arithmetic Basics
Jacquard harness setup dictates woven repeat limits by mathematically mapping electronic hook capacity and comber board pitch against reed density and yarn crimp.
Straight Cast Tie
Linen Binding
A straight cast tie functions as the primary mechanical lock for bundling raw flax straw during the retting phase of Chinese industrial linen production. Flax straw requires secure containment to maintain uniform stem orientation while water or chemical agents dissolve pectin bonds between fibres. Workers align bundles within the drying racks and then pull the straight cast tie firmly across the diameter of the mass.
This procedure prevents fibre disarray which would otherwise create uneven tension during subsequent scutching steps. The gauge of the tie remains constant regardless of stem diameter to ensure consistent contact pressure across the entire batch. Consistent pressure avoids damage to the outer bast fibres while ensuring the inner core undergoes complete chemical breakdown.
If the pressure drops, the straw shifts and results in uneven degumming across the bundle.
Bundle Integrity
The quality of the tie depends on the tensile strength of the high density polyethylene used in the manufacture of these manual components. Inspectors verify the breaking force of each batch before distribution to the primary retting ponds. A failing tie allows individual stalks to protrude from the bundle, which causes tangles in the hackling machines during later mill stages.
Quality control logs record the failure rates of ties per production shift. When the force measured at the break point falls below the standard set for wet environment endurance, the entire shipment undergoes rejection by the procurement manager. These logs track the variance in knot security as humidity levels shift within the facility.
Scutching Yield
Accurate application of the straight cast tie correlates with the output of line fibre after the scutching process finishes. Proper bundling ensures the beaters remove woody shive from the stem without breaking the long fibres into shorter tow. Mills monitor the ratio of line fibre to tow for every hundred kilogram batch to determine the effectiveness of the binding.
High yields indicate the ties kept the straw aligned while the mechanical beaters separated the flax from the stalk. The mechanism maintains the physical order of the bast through the final drying cycles before export.