Introduction of yarn drying process

Introduction of yarn drying process

Update: 2020-02-28

Yarn is a kind of textile. It is processed into various fineness products with various textile fibers. It is used for weaving, rope, thread, knitting and embroidery. It is divided into short fiber yarn and continuous filament. There are many ways to express the fineness of the yarn, such as number, metric count, inch count, denier and so on. The twist of the yarn is expressed as the number of draws per meter or inch. Wool yarn and yarn are generally used in textile sweaters, woolen pants, wool vests, scarves, hats and gloves, and various spring and autumn clothing accessories. In addition to keeping warm, they also have a decorative effect.

The yarn is divided into: short fiber yarn, which is made of short fiber (natural short fiber or synthetic fiber cut fiber) after spinning, divided into ring-bonded yarn, free-end spinning, self-reeling yarn and so on. Continuous filaments, such as natural silks and chemical fiber filaments, with or without gauze, smooth filaments or deformed filaments. Combined yarns of staple fibers and continuous filaments, such as polyester-cotton filament core-spun yarns. The thread is made by combining two or more single yarns.

Yarn drying process

The dyes and time of different types of yarns are different. When drying, the characteristics of different yarns must be fully considered, and the temperature parameters, humidity parameters and time range of the heat pump dryer should be adjusted appropriately. The entire circulation system of the heat pump dryer is completely closed, using a fan to perform convective heat exchange, to transfer heat to the material, and to continuously replenish fresh air and exhaust humid air.

The advantages of yarn dryer:

The yarn dryer designed and produced by Oberte belongs to a high-temperature heat pump dryer, which is heated by compressed air (adjustable temperature in the drying room: 8 ℃ -75 ℃, adjustable humidity: 5% -95%), No coal burning, no wood burning, no coal burning, no boiler, no steam. The yarn drying mechanism makes good yarn drying quality, low running cost, and the drying process is controlled by computer intelligence, which is a kind of energy saving. An environmentally friendly drying solution, the heat pump yarn dryer is a replacement for the traditional tunnel dryer using steam.

Selection of yarn dryer:

Many dyeing plants still use tunnel-type yarn dryers based on hot steam technology today. This dryer adopts an open structure, which has large heat loss and ly low heat utilization efficiency. The system provides heat by steam, and the wet yarn is slowly conveyed by the conveyor belt. The wet yarn on the conveyor belt is dried by steam. The heat loss is large. On average, the steam cost is approximately 800-900 yuan for every 5000 kg of wet yarn.