Spinning chenille yarn differs from spinning other cotton yarns; therefore, the operational procedures also differ. The procedures and common issues are as follows:
a) During the operation, operators should frequently check the cutting blades for dullness. If dulling occurs, they should be replaced immediately to prevent damage to the cutting quality.
b) The condition of the spacers and rollers directly affects the yarn count. Operators must continuously improve their ability to estimate the feel of the yarn to ensure uniformity.
c) After using a new spacer, each side and corner should be sanded and polished smooth, then sanded with wet sandpaper to a gloss level of V11 or higher to ensure proper winding and draping of the velvet wedding dress.
d) Yarn defects caused by breakage or stopping should be marked with knots to facilitate inspection and repair by winding personnel. Upon discovering defective yarns such as loose yarn or exposed core, immediately adjust the processing technology, repair the machinery, and hand over the damaged yarn bobbins to designated personnel for handling.
e) Regularly maintain the cleanliness and order of the machinery, ensuring unobstructed flow in the textile process to prevent defects such as fly yarn.
Chenille yarn, also known as spiral long-pile yarn, is a new type of patterned cotton yarn. It is spun using two strands as copper core cables, with the feather yarn sandwiched in the center through twisting. Therefore, it is also known as corded cotton yarn.
Chenille yarn, with its characteristics of being thick, soft to the touch, strong yet lightweight, is widely used in the home textile and knitwear industries, creating new trends in product development and generating good economic benefits for retailers.
1. Product Model
The copper core cable of chenille fabric is made by twisting nylon yarn, while the feather yarn is made by cutting viscose yarn into short feathers. It is processed into "viscose/acrylic" chenille fabric products through corded machinery. Based on environmental trends and characteristics, chenille yarns are divided into: coarse grades (500tex–286tex), medium grades (250tex–182tex), and fine grades (167tex–143tex) chenille fabrics.
2. Basic Textile Principles
2.1 Transportation and Positioning of Copper Core Cables
During the textile process, copper core cables are divided into upper and lower copper core cables. Under the influence of the traction rollers, they are wound upwards from the same direction and fed in together. With the help of the roller plates and spacers, the upper and lower copper core cables are positioned on both sides of the yarn, and are both located at the center of the yarn.
2.2 Introduction and Laser Cutting of Feather Yarn
Feather yarn consists of two or three single yarns. The single yarns are unwound from the upper spindle and twisted by the high-speed rotation of the spindle head, improving the beta-ray properties of the feather yarn. They are also coiled on a spacer to form loops. These loops are loaded downwards with the rotation of the rollers and cut into short feathers by the cutter head. These short feathers, along with the upper copper core cable, are fed to the control rollers and converge with the lower copper core cable. Thus, the feather yarn is sandwiched between the two copper core cables and enters the twisting zone.
2.3 Twisting and Forming
With the high-speed rotation of the spindle, the copper core cable is rapidly twisted. The twisted copper core cable and the feather yarn are firmly coupled together to form a thick chenille yarn for down jackets. Simultaneously, it is formed into tube yarn on the yarn bobbin by a spinning machine.