1. Pre-removal of impurities: Use professional pre-removal equipment to process the down raw materials, and accurately pick out various impurities mixed in them, such as stones, grass clippings, etc., to provide relatively pure raw materials for subsequent processing links.
2. Primary ash cleaning: With the help of primary cleaning equipment, the ash of the down that has been pre-removed of impurities is cleaned through a combination of wind power and vibration, effectively reducing dust adhesion.
3. Fine screening of down: A fine screening device is used to carefully classify the down after primary cleaning according to the physical characteristics of down, feathers of different sizes and wing stalks to ensure accurate separation of each category.
4. Deep cleaning process: Using special cleaning equipment, the down cleaning agent is accurately proportioned according to the weight of the down during cleaning, and the down is deeply cleaned in all directions to completely remove grease, dust and odor.
5. High-speed centrifugal drying: Through high-speed centrifugal equipment, the deep-cleaned down is subjected to high-speed rotation and drying operations to quickly reduce the moisture content of the down.
6. Hot air circulation drying: Use hot air circulation drying equipment to evenly deliver hot air to dry the down after spinning, and simultaneously achieve deodorization and preliminary disinfection during the drying process.
7. Air cooling and secondary impurity removal: With the help of air cooling equipment, the down is cooled after drying, and the filtering device is used to remove the fine impurities that may remain.
8. Strict quality inspection: According to the established quality inspection standards, professional testing instruments are used to conduct comprehensive quality inspection on down products after secondary cooling and impurity removal to ensure that product quality meets the standards.
9. Standardized packaging and storage: Down products that have passed quality inspection are packaged according to different varieties using standardized packaging equipment, and then stored in a suitable environment for easy subsequent use.