In applications where traditional size warp beams are quickly woven out, bobbin creels could be an alternative option. Bobbin creels are used for many different technological applications, e.g. warping, weaving, warp-knitting and pultrusion procedures.
The bobbin creel must be able to accommodate an adequate number of bobbins and ensure that the yarn tension is equal across the entire warp sheet. The size of the bobbin creel and the number of package positions will depend on the number of yarns required.
Weaving from additional or larger beams on separate let-off frames is an ideal solution if the space requirement for the bobbin creel is too big.
Keeping tension constant
The warp feed device works as a warp tension controller between the bobbin creel and the weaving machine and feeds the yarn at the adjusted tension to the weaving position.
The thread draw-off from the bobbin creel normally takes place on a lower tension than used for weaving.
There is no doubt about the fact that it is important to work with a sophisticated bobbin creel that keeps the tension constant over the warp sheet. If the run-off from the creel is not perfect, even the best warp feeding device cannot compensate tension variations across the warp width.
The feed unit is used to draw-off the threads from the creel and feed the warp to the weaving machine at the correct tension.