What are the reasons for the horizontal stripes in the warp knitting machine?
The Warp Knitting Machine is very popular in the textile industry. Its automatic operation is very convenient, but in actual operation, there are often some problems, such as horizontal lines, which affect the final quality. The reasons must be found out. and reasonably resolved. Weave of warp knitting machine:
One is warp knitting running horizontal bars, that is to say, during the operation of the warp knitting machine, horizontal bars appear intermittently on the cloth, which seriously affects the quality of the fabric. Most of the causes of this running bar are the abnormal operation of the let-off system, which often occurs in passive or semi-active let-off. After the positive let-off of fixed length is used, it is greatly improved, but it often occurs when the let-off system is not working properly. The other is the warp knitting stop line, that is, the warp knitting stop bar problem, that is, when the warp knitting machine is stopped and then started, a bar appears on the cloth surface. The main problem is that the machine stops from full speed to braking. During the process, the changing law of the spindle speed of the machine and the changing law of the let-off device decelerating and stopping the let-off are not synchronized and inconsistent, and the same is true when the machine is started. During the process of the spindle from static to full-speed operation, the let-off system is difficult to send synchronously throughout the whole process. A horizontal bar appears. Advantages and applications of warp knitting production process:
Warp knitting is a combination of weaving methods in which the yarns meander along the length of the fabric; that is, follow adjacent columns or wales, rather than a single row or course. For comparison, knitting across the width of the fabric is called weft knitting. Because warp knitting requires individual strands or strands equal to the number of needles in a row, warp knitting is almost always done by a warp knitting machine rather than by hand.
The production of textiles by the warp knitting process has the following advantages:
higher productivity than weaving, multiple fabric structures, large working width, low stress rate on the Yarn, allows the use of fibers such as glass, aramid and carbon fibers, three-dimensional structures can Knit on a Double Needle Bed raschel.
Warp knitted fabrics have a variety of industrial uses
including the production of mosquito nets, tulle fabrics, sportswear, shoe fabrics, fabrics for printing and advertising, coated substrates and composite backgrounds. The use of warp knitted fabrics is being investigated for industrial applications, for example, for reinforcing concrete and for producing biomaterials.
Warp Knitting Machine ( 34 )
