The timing at which the opening of the loom closes is called cross timing.
I will explain what is different and what is the advantage
when the cross timing is the same and not the same for each frame.
The figure on the left shows the same timing for all frames.
If all the frames are the same, there is a moment when all the warp threads are lined up in a row.
If all the frames are different, there is no moment when all the warp threads are lined up in a row.
This advantage is effective in preventing poor opening when weaving high-density woven fabrics or when weaving with fluffy threads.
If the timing is the same, in the case of high-density woven fabric or yarn with a lot of fluff, the warp yarns will interfere with each other and the opening will be poor.
This is because the space ratio at the moment of lining up in a horizontal row is low.
If the cross timing is different, it is difficult for the warp threads to interfere with each other, so it is difficult for the opening to be poor.
However, only Toyota Industries’ electronic aperture looms can make the cross timing of all frames different.