According to the characteristics of the production process adopted by the warping, the warping can be divided into several forms such as batch warping, ball warping, strip warping and segmental warping.
(1) Batch warping, also known as shaft warping. This warping method divides the total warp number required for the whole fabric into several batches according to the capacity of the drum rack, and windes them parallel on several warp axes. The number of warp roots winded on each warp axle should be as equal as possible. The width of each batch of yarns is equal to the width of the warp axes. The yarns of these warp shafts are then combined on a sizing machine (or a parallelizer) and are sized or dried in excess of water. The yarns are wound into a weaving shaft according to the length specified in the process.
When warping in batches, the yarn winding length of each warp axis should take into account such factors as sizing elongation, fabric count, yarn length for each fabric and yarn return length on the machine, so as to avoid the occurrence of small axes in sizing. The batch warping method is suitable for warping large quantities of primary or monochrome fabrics. It has the characteristics of high production efficiency, high speed and good warp shaft quality. The disadvantage of this method is that it has more yarn return.
(2) Ball warping. Ball warping is to divide the total number of roots required for the whole fabric into several yarn bundles according to the capacity of the creel, and each bundle is wound into a cylindrical ball, dyed by a rope dyeing machine, and then on the warping machine. Winding into a warp beam, sizing and forming a woven shaft. The ball is dyed evenly, and the warping method is suitable for the production of denim, rags and the like.