Industrial Refining
Sequential washing, dehairing, and sorting of raw goat fleece in discrete production lots ensures that each batch retains its unique origin, color, and fibre characteristics. Thorough cashmere batch processing demands strict control over washing temperatures and mechanical settings to protect the fine fibres. Because cashmere is highly sensitive to heat and alkaline chemicals, each lot is handled according to its specific average fibre length and dirt content.
This systematic approach preserves the soft hand and thermal properties of the luxury material.
Lot Segregation
Keeping batches isolated from each other prevents the mixing of different grades and origins, which could lead to inconsistent dyeing or spinning behaviors. Each raw lot receives a unique identification number upon arrival at the processing facility. This tracking number stays with the material through scouring, drying, and dehairing.
If different lots were allowed to mix, a single poorly washed batch could ruin a high-quality lot.
Contamination Prevention
Maintaining clean machinery between batches is necessary to avoid cross-contamination of colors and fibre lengths. When a lot is finished, the processing cards, wash bowls, and drying chambers must be cleaned of all residual fibres before the next run begins. This clean-down period requires scheduled machine downtime but prevents light-colored cashmere from being contaminated by darker fibres from a previous batch.
Quality Assurance
Laboratory samples are pulled from each completed lot to measure mean fibre diameter, length distribution, and residual grease content. If the dehairing phase leaves too many coarse hairs behind, the batch must undergo further mechanical sorting. Fine cashmere must remain under sixteen microns in diameter to be classified as high grade.