Standard Specification
Raw material assessment forms the primary mechanism for quality control during the initial sorting of scutched flax straw before it enters the mechanical drafting frames. These flax fiber ultimates represent the highest tier of commercial grade for linen production based on measurable tensile strength and minimum mean length. Inspectors assign this classification when processed flax exhibits a specific tenacity threshold and low moisture regain levels.
Factories record this data on technical control sheets to define the value of incoming lots before long-fiber spinning begins.
Assessment Criteria
Length measurements for these stalks depend on manual bundle sampling taken across multiple sections of the bale. Machines perform the test by measuring the distance between the two points where fiber breakage occurs under a standard weight load. Technicians must differentiate this raw material grading from the finished textile count measured after the bleaching and dyeing processes.
The production team holds the supplier to the physical benchmarks rather than internal factory output targets.
Process Application
Mills integrate these fiber lots directly into the spinning line to produce high-density linen yarns intended for luxury textile markets. Proper classification prevents the inclusion of substandard materials that cause machine jams or excessive waste during the high-speed drafting phase. The sorting department verifies the density and cleanliness of every bale to maintain the integrity of the final fabric roll.
High-grade flax fiber ultimates ensure that downstream machinery operates within its specified efficiency range throughout the entire duration of the production cycle.