Scope of application and fabric types
Early air-jet looms had a very small scope of application and were mainly used to produce white cotton fabrics. Moreover, the cloth width was small, the speed was slow, the fabric had great limitations, and the fabric quality was not high. However, since the early 1980s, with the advancement of special-shaped reed and relay weft insertion technology of air-jet looms, as well as the application of electronic computers, sensors and frequency conversion speed regulation technology, the speed of air-jet looms and the automatic monitoring of looms have been greatly improved. level, especially the rapid development of air-jet looms in the past 10 years, which has enabled air-jet looms to have many advantages such as high quality, high speed, high output, and high self-control level. The range of variety adaptation has been greatly improved, and the color of weft yarns has progressed from monochrome to The current 8 colors, the effective width has also progressed from the original narrow width to the current width of 5.4m. The range of its weaving varieties is close to that of projectile looms, and it has become a model with rapid technological progress among shuttleless looms. The following explains in detail the applicable scope and fabric varieties of air-jet looms from several aspects. 1. Reed width of the loom Due to the relay weft insertion of the auxiliary nozzle, the reed width of the air-jet loom is greatly expanded. The effective width range of the air-jet loom is: 130~540cm, with single warp beam and double warp beam. 2. The weft density range is related to the specifications of the winding reduction gearbox and the beating capacity of the loom. The weft density range is: 80~1000 threads/10cm. 3. Types and linear density of spinning yarns (1) Types of yarns: C (cotton), P (polyester), R (viscose), P/C (polyester/cotton), CVC (cotton blended chemical fiber fabric), PU (polyurethane), PE (polyester), PEW (polyester wool), N (nylon), AC (acetate fiber), BB (cupro ammonia fiber), W (pure wool), G (glass fiber), SF (chemical Fiber staple fiber), VS (vinylon staple fiber), AL (polyacrylonitrile fiber). P/R (polyester/viscose), P/N (polyester/linen), P/W (polyester/wool), CSY (core-spun yarn). Except for linen yarn and woolen yarn with very long hairiness, all short fiber yarns or deformed synthetic filaments, laminated microfibers, covered yarns and high-twisted yarns can be used in air-jet looms. (2) Linear density of spinning yarn: Staple fiber: 10~200tex (5~100 British counts). Filament: 3.33～66.6tex (30～600D). 4. Weft color: Single color, 1×1 double-jet mixed weft, 2×2 double-jet mixed weft, and free selection of 2, 4, 6, and 8 colors can be woven on air-jet looms. 5. Fabric weight is generally between 30 and 550g/m2, and some can reach 650g/m2. 6. Fabric weave: It can weave plain weave, twill weave, satin weave, corduroy, terry fabric, small jacquard and large jacquard weave fabrics. It depends on the type of opening device selected. The weaving range of air-jet loom is shown in Figure 2-1. The classification of air-jet loom fabrics is shown in Table 2-1.
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