1. Raw material coarse screening: Use raw material coarse screening equipment to perform preliminary coarse screening on the down raw materials to remove larger debris and create conditions for subsequent processing.
2. Initial cleaning: The down that has been coarsely screened is initially cleaned through the initial cleaning equipment to reduce dust interference.
3. Accurate classification: With the help of accurate classification equipment, the down after the initial cleaning is accurately classified into down, feathers of different specifications, wing stems, etc.
4. Thorough cleaning: Use thorough cleaning equipment, add an appropriate amount of down-specific cleaning aid during cleaning, and thoroughly clean the down to remove grease, dust and odor.
5. Centrifugal dehydration: Use centrifugal dehydration equipment to centrifugally dehydrate the down after thorough cleaning to remove moisture efficiently.
6. Drying and sterilization: The down feathers after centrifugal dehydration are dried by drying and sterilization equipment to achieve sterilization and deodorization at the same time.
7. Cooling and impurity cleaning: With the help of cooling and impurity cleaning equipment, the down is cooled after drying and the remaining impurities are cleaned.
8. Quality inspection and evaluation: According to relevant quality inspection standards, the down products after cooling and cleaning are inspected and evaluated to ensure product quality.
9. Packaging and inventory management: Down products that have passed quality inspection will be packaged using packaging equipment according to different varieties, and then inventory management will be carried out.