The warp knitting machine is very popular in the textile industry, and its automated operation has made it much more convenient. However, in practical operation, there are often some problems that arise, such as the appearance of horizontal stripes, which affect the final quality. The reasons must be identified and reasonably solved.
Horizontal stripes of warp knitting machine:
One type is the warp knitting running horizontal bar, which means that during the operation of the warp knitting machine, horizontal bars intermittently appear on the fabric, seriously affecting the quality of the fabric. The main reason for the formation of such horizontal bars is that the delivery system is not working properly, which often occurs in passive or semi active delivery. There has been significant improvement after adopting fixed length active warp feeding, but it often occurs when the warp feeding system is not working properly, and the most important issue is poor meshing between the warp feeding box worm and worm gear.
Another issue is the problem of warp knitting stop lines, also known as warp knitting stop horizontal bars. When the warp knitting machine is stopped and restarted, horizontal bars appear on the fabric surface. The main problem is that during the process of the machine from full speed to braking stop, the change in the spindle speed of the machine and the change in the warp feeding device deceleration and stopping warp feeding are not synchronized or consistent. The same is true when the machine is started. During the process of the spindle running from rest to full speed, the warp feeding system is difficult to synchronize warp feeding throughout the entire process, resulting in horizontal bars.
The advantages and applications of warp knitting production technology:
Warping is a combination of weaving methods in which the yarn twists and turns along the length of the fabric; Follow adjacent columns or rows instead of a single row or horizontal column. For comparison, knitting that spans the width of a fabric is called weft knitting.
Due to the requirement of warp knitting that the number of individual strands or strands is equal to the number of needles in a row, warp knitted fabrics are almost always completed by the warp knitting machine rather than by hand.
The production of textiles through warp knitting technology has the following advantages: higher productivity than weaving, multiple fabric structures, large working width, low stress rate on yarns, allowing the use of fibers such as glass, aramid, and carbon fiber, and three-dimensional structures can be woven on double needle bed Raschel.
Knitted fabrics have various industrial applications, including the production of mosquito nets, thin gauze fabrics, sportswear, shoe fabrics, printing and advertising fabrics, coated substrates, and composite backgrounds. We are researching the use of woven fabrics for industrial applications, such as reinforcing concrete and producing biomaterials.