Applying Section XI Note 7 Criteria to Borderline Linen Goods
Applying Section XI Note 7 requires auditing mill edge finishes, drawn threads, and cutting geometry to prevent high-duty Chapter 63 customs reclassifications.
Fast Selvage
Selvage Stability
Woven edge tension defines the structural integrity of fabric edges during high speed projectile insertion on loom frames. The fast selvage ensures that yarns under extreme mechanical force remain within established tolerances throughout the primary weaving stage. This configuration acts as a mechanical anchor for the cloth as the shuttle or gripper mechanism moves across the warp.
Fabric density variations decrease when this tension control maintains consistent pressure on the external warp ends. Any deviation in these edge forces triggers a stoppage in the automatic detection array to prevent structural deformity in the final rolls.
Production Verification
Quality control technicians record these tension metrics on the digital loom readout during the start of every shift. A technician compares the actual mill settings against the specified parameters provided in the customer procurement contract. Cloth samples undergo testing to determine if the edges curl under thermal processing or if the width shrinks beyond the acceptable margin of error.
Operators adjust the shedding angle or the spring load on the catch thread to normalize the tension output. Each deviation outside the target range marks the batch for manual inspection before the finishing process commences.
Logistical Consequence
Export reliability depends on the uniformity of the cloth width across the entire length of the production bolt. A consistent edge prevents fraying during the long transit periods inherent in international maritime shipping and subsequent customs handling. Uniformity of the side edge facilitates the precise alignment of multiple fabric layers during the cutting phase of clothing manufacture.
Accurate edge geometry dictates the yield of the raw material once the textile reaches the cutter table.