Silk waste (including cocoons unsuitable for reeling, yarn waste and garnetted stock)

HS code 500300 covers a range of silk waste products, including cocoons unsuitable for reeling, yarn waste, and garnetted stock. This industry plays a vital role in the global textile supply chain, providing essential raw materials for the production of high-quality silk fabrics and garments. The efficient management and utilization of silk waste are crucial for the sustainability and profitability of the silk industry as a whole.

The main production techniques for silk waste involve the collection, sorting, and processing of various silk waste materials. Cocoons unsuitable for reeling are typically opened and the silk fibers are extracted. Yarn waste, which includes broken or unusable silk threads, is collected and processed through a garnetting machine to produce a fluffy, fiber-like material known as garnetted stock. These processed silk waste products can then be spun, woven, or knitted into a variety of textile applications.

The primary inputs for the silk waste industry include the raw silk waste materials, such as cocoons, yarn waste, and garnetted stock. Additionally, the industry relies on specialized machinery and equipment for the sorting, processing, and transformation of these waste materials. Energy sources, such as electricity or fuel, are also required for the various production stages.

The main outputs of the silk waste industry are the processed silk waste products, including garnetted stock, silk noils, and silk floss. These materials are then consumed by various 500400 Silk yarn, not put up for retail sale and 500500 Silk yarn, put up for retail sale industries, as well as the 500600 Silk-worm cocoons suitable for reeling and 500700 (Raw silk (not thrown)) industries, which utilize these waste products as raw materials for their own production processes.