What is sectional warping machine?
A sectional warping machine consists of three basic units, which are the creel, winding drum, and beaming unit. In section warping, warp yarns are organized into yarn bands (sections), each having the same warp density as for the weaver’s beam. Then, the yarn sheet is transferred from the drum onto the weaver’s beams.
What is the process of warping?
Warping is the process of combining yarns from different cones together to form a sheet. The important point in the warping is to preserve the yarn elongation and maintain it at uniform level. This is done to achieve a better performance during weaving in terms of low end breakage rate.
Why is sectional warping machine used for yarn dyed fabric?
The sectional warping machine prepares multicolored warps to be woven as striped or checked design fabrics. In the case of single yarns that are multicolored, the yarns are sized and then coiled on the sectional warp beam. The yarn is wound in sections, each section having a particular width.
Why is sectional warping called indirect warping?
INDIRECT WARPING OR SECTIONAL WARPING: In this method of warping, the warp ends are first wrapped on the warping drum and then transferred on the weaver’s beam. This method becomes more useful when the required warp length is very low.
How is warping calculated?
Warping Production Calculation Formula with Example
- Total Length of Warp Produced per Day of 8 hrs = Calculated Production x Efficiency x 60 x 8.
- No of Beam produced/Day of 8 hrs = ——————————————————————-
- Total Weight of Warp in lbs = —————————————————————————-
- Weight of Yarn on a Beam = ————————————————–
What is high speed warping?
High speed warping machine is used for producing weavers beam from the single yarn. It also used to produce common fabrics in higher number of quantities. Here, large amount of yarn required. Creel capacity is higher than 12000. Cone, cheese winding is used here.
How does warping process accelerate?
Warp yarns run with along the length of fabric and weft yarns go across the width of the fabric. The basic objective of warping is to built a package where yarn ends remain in uniformly set parallel & continuous form & there by to accelerate the next process either sizing or drawing-in.
Which creels is used for slow speed warping machine?
Rectangular creel: This type of creel is in the shape of rectangle. It is the most popular creel and with capacity available is 100-600 and 1000 packages. It is used in slow speed warping machine.
What is direct warping?
Direct Warping Denotes the transference of yarns from single-end yarn packages, wound packages, directly to a beam in a one step process. This means that there are an equal number of packages in the creel area as there are ends on the beam, except in the case of a magazine creel.
What is warp count?
The number of warp yarns per one inch or centimeter of fabric. This is also called sley, warp end count, ends per inch, or ends per centimeter.
What are the objectives of warping?
The objective of warping process is to convert the yarn packages into a warper’s beam having desired width and containing requisite number of ends. Uniform tension is maintained on individual yarns during warping.