Screen Printing:

When you put a paste of Color , then the color comes through the fine holes of the design and comes on the fabric. In this printing, a color can be printed from one screen in the same way as the color printing. For every color design, There are many runs needed in this.
 In manual screen printing, the fabric is piled well on the printing panel and it is taken care that there is no fall on the cloth. Therefore, by pulling this cloth properly, fix it with the help of pins and Put the screen on the cloth and put a color paste. Spread the paste on top of the screen with the help of Squeegee, which spreads well on the screen, so that the color can be seen from the hood of the screen. Check it out.

making screen for printing

Screen printing is a form of stencil printing. This printing has a frame for printing which is covered with silk, metal, nylon or polyester cloth. The screen is prepared like this. On the screen, a photographic film is coated with a design based on trace paper. Design made on the screen is made of very fine holes. 


Screen printing



Machine screen printing

This kind of printing can also be done by machine, which is called flat band printing. Textile with such a machine is constantly printing. With the help of cloth conveyor belt, the printing keeps on moving forward. In the law, the screen is one after the other, which are above the belt. The time of printing stops the belt, so that the cloth comes in a steady state, the screen comes on top of the screen and after printing, the screen is up like the above and the cloth moves further. Next screen is placed on another screen. This process keeps running on the fabric (which is printed from the first screen). 

In this method, the colors are brought to the screen with the help of Pump and the skiing process comes from mechanical squeezing.
Two types of suites are used. A conventional squeegee that moves forward and backward on the screen with the help of a motor, and there is a squire like the other roller bar which keeps roll on the screen.

Printing in flat bed 6 May be at a meter / minute speed. Fig - The flat- screen printing process is shown in


Vertical Duplex Screen Printing Machine
 


This new vertical duplex screen printing machine has been developed by the firm Franz Zimmer. The screens are used vertically at twin pairs, which clamp together over the cloth at the moment of printing. They register the prints exactly at the same place on the back and face of the cloth. This is insured by the method of packing the screen. The machine provides a new technique for the whole range of textiles, particularly very wide and thick materials such as drills, blankets, toweling, etc. It is possible to print on both sides with ease and economy. Depending upon the type of dye used, the fabric after printing and dyeing is passed through either a steamer or a polymerize to fix the dye the fabric. The fabric is then washed on a soper and dried. The details regarding steamer, polymerizer and soaner are mentioned earlier in the Chapter n Machinery Used in Dyeing.


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