Yarn dyeing is the special type of dyeing process. Yarns are dyed in package form or hank form by yarn dyeing process. It is slightly difference from woven or knit dyeing. Dyed yarns are used for making stripe knit or woven fabrics or solid dyed yarn fabric or in sweater manufacturing.
The process flow chart of yarn dyeing in a yarn dyeing floor is given below:
Yarn dyeing in package form
Random Section (Re winding section)
Packing and Delivery
Now I like to give short idea about each section of the dyeing floor.
Soft Winding: It is the first steps of yarn dyeing. In this section yarns are transferred from paper cone to plastic tube or steel tube for facilities the yarn dyeing process. Without this process it is not possible to accelerate package yarn dyeing. Different parameters are maintained during re winding of yarn.
Batching: In batching section; yarns are batched according to their count, lot, yarn type and others. A batch card is formed which contain the essential information of that batch.
Dyeing: In dyeing section; dyeing is done according to the approved sample dyeing recipe. Different parameter is maintained during dyeing. When dyed yarn shade is matched with the approved sample than is take out from the dyeing bath.
Hydro Extractor: In this section excess water of the yarn is removed. After that yarn package are sent to the dryer.
Dryer: Dryer is used for remove remaining water of the dyed yarn.
Random section: In this section dyed and dried yarns are transfer from plastic tube or steel tube. During re winding, finishing materials are applied to the yarn.
Packing and Delivery: After passing random section, dyed yarns are checked by the quality officer. After passing the quality, yarns are packed. After packing, yarns are ready for delivery.
So, above all are about the activities in a yarn dyeing floor.