Multiphase Loom

In multiphase weh insertion systems, several weft threads are inserted at the same time, in the wave-shed weaving machine, the sheds are oriented wave-like across the whole warp width. In each wave, a small weft cop is drawn off as with the shuttle loom. Production machines have already been sold by various European loom manufacturers. However, this principle has not succeeded because of a lack of quality and flexibility. An automated system to fix weft breaks is another challenge. 

Sequential multiphase looms provide sequential sheds in the warp direction, each for one weft insertion. This principle has been known for a long time. At ITMA1995, Sulzer-Riiti presented its sequential multiphase weaving loom M 8300 (Fig. 4.25). Despite the high production speed (up to 5000 m/min), it was no commercial success, the main reasons being the low flexibility regarding patterns and the difficulties when fixing a weft yarn break. 

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Mulberry spinner 48 Multiaxial fabric 240 Multiaxial noncrimp fabrics 244 Multiphase loom 162... 

Figure 4.25 Principle of the sequential multiphase weaving loom M 8300 (Courtesy of Sulzer-Ruti)...

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