Printing Process Of Knitted Fabric

The printing of knitted fabrics has developed rapidly in just ten years, but because of its dimensional stability in the processing, it is difficult to control the knitwear, especially the knitted fabric.

It is difficult to develop circular screen printing. In addition to the large size of the cotton knitted fabric itself, the draping weight and the tension of the feeding frame are also influenced by the speed of the vehicle. The shape and size of the flower pattern are more difficult to control. It is more difficult to maintain the original spirit of the flower shape when meeting the geometric pattern, and it is difficult to achieve satisfactory results.

It is necessary to take necessary control over the whole process so as to solve it.

Printing process of knitted fabric containing spandex.

Weaving, opening, rolling, spreading, loosening, steaming, preforming, pre processing, dyeing, printing, steaming, washing, dehydration, drying and shaping.

The processing method of color separation design draft.

For computer color separation draft, first, according to the variety of fabric, the size of elastic, the position of flower pattern, the number of units, the way of printing (direct printing, printing and printing, anti printing), the deep and shallow gradation of color, and the scaling of drawings to meet the specifications of production requirements.

Zoom in printing size.

Under the condition of allowed return.

When the spandex content in the general cotton spandex is between 3% and 5%, the condition design of the whole printing process must be taken into account.

At the same time, various parameters of rotary screen printing have been worked out.

The printing speed control of the above data is between 30 and 40m/min. If the printing speed is above 50m/min, then the ratio of meridional elongation of the flower shape is greater. However, the printing speed is below 40rn/min, and it is easier to control both in flower shape and quality.

Compared with shuttle weaving, weaving is more loose and permeability is better.

Therefore, there is a slight difference between the manuscript and the shuttle print.

When the mechanical accuracy of the equipment is allowed, 8 silk is good to ensure the printing accuracy. At the same time, when dealing with the color printing, reduce the three full color of the cover as far as possible and prevent printing from pressing. The printing and printing resist the paint and prevent the activity from being active. Because the edge of the pigment printing is not easy to be opened, the color separation of printing pigment is painted according to the requirements of the color draft, while the active paint is covered with paint. When the reactive reactive printing is applied, the color of the printing is not to be restored to the full color, but the whole part of the white part can be covered on the printing pad connected with it, which can increase the brightness of the colored parts and increase the brightness of the colored parts. In direct printing of knitted fabrics, the printing paste has good permeability. Generally, 8~16 colors are used for printing.

In the treatment of color separation draft, besides the above requirements related to printing effect, the general principle of treatment is to conform to the spirit of the original and repeat the style of the manuscript on the cloth.

According to the fineness of flower pattern and the requirement of permeability for different fabric thickness, nickel mesh is the essential material for printing. The commonly used nickel mesh mesh has 40, 60, 80, 105, 125, 155 and so on.

The penetration rate of nickel mesh is an important index. Of course, the actual slurry volume is also related to the viscosity of the slurry, the size and pressure of the scraper or magnetic rod, the printing speed, the fabric and so on.

However, compared with shuttle weave, knitted fabric is coarser, so the same type of printing is used for printing the knitted fabric with larger mesh than shuttle fabric.

The 125 mesh and L55 mesh are mainly used for printing special fine patterns.

If it's a pile of woolen cloth or a velvet stamp,

Fineness will be affected by cloth texture. High mesh can hardly reflect the effect of printing fine pattern, mainly considering the permeability of printing.

Therefore, the choice of nickel net should be determined according to the specific conditions of each factory.