According to the different weft insertion methods of weaving machines, they can be divided into shuttle looms and shuttleless looms.

Today we will talk about jet looms on shuttleless looms.

Jet loom is a new type of loom that uses high-speed airflow generated by compressed air to attract weft yarn through the weaving mouth for weft insertion.

1、 Principle of weft insertion

Jet weft insertion is the use of air as the weft insertion medium, which generates frictional traction force on the weft yarn through the compressed airflow. The weft yarn is pulled through the shuttle mouth and the weft insertion is achieved through the jet generated by the jet.

2、 The characteristics of jet weft insertion

Jet weft insertion is a type of high-speed, high tension, small shed property that requires high quality of yarn and semi-finished products.

Jet weft insertion is a type of passive weft insertion. When the weft passes through the shuttle, the tension of the weft is very small. At the same time, the open state of warp yarn has a significant impact on the quality of weft insertion, which can easily lead to fabric defects such as shrinkage and folding.

3、 Applicable scope and fabric variety

Early jet looms were suitable for a small range of applications, mainly producing small size, slow speed, large limitations, and poor quality raw fabrics. However, since the early 1980s, with the development of irregular spring and relay weft insertion technology in jet looms, as well as the application of computers, sensors, and variable frequency speed control technology, the speed and automatic monitoring level of jet looms have greatly improved. Especially in the past decade, the rapid development of jet looms has made them have the advantages of high quality, high speed, high output, and high level of automatic control, greatly expanding the range of variety adaptation.

The width of the jet loom has increased from 190cm and 280cm to over 340cm, 360cm, and 400cm; The main nozzle has been increased from a single nozzle to a double nozzle and a four nozzle; A multi-color weft insertion system controlled by computer software, capable of selecting weft from 4 to 12 colors; The raw materials for weft yarn can be synthetic filament, synthetic short fiber, pure cotton yarn, wool yarn, glass fiber yarn, various fancy yarns, etc; The product variety can be produced from high count, dense, thin fabrics to coarse count, high density, and thick fabrics. Donier jet looms have been used to produce industrial fabrics such as filter fabrics, sandcloth twill fabrics, steam steamed fabrics, and fiberglass wall fabrics.