As we all know, screen print technique is widely used in garment manufacturing. It produces vivid colors, even on darker fabrics. The ink or paint also lie in layers on the surface of the fabric or paper, which gives the print a pleasingly tactile quality. In this post, I will lead you to know how to screen print on a garment.
1. Design an image you want to print
To start, the printer takes the design they want to create on the finished product, and prints it out onto a transparent acetate film. This will be used to create the stencil.
2. Prepare a screen
Next, the printer will choose a mesh screen to suit the complexity of the design, and the texture of the fabric being printed. The mesh screen is then coated with a layer of light-reactive emulsion, which will harden when developed under bright light.
3. Expose the emulsion
The acetate sheet featuring the design is then laid onto the emulsion-coated screen, and the whole thing is exposed to a very bright light. The light hardens the emulsion, so the parts of the screen which are covered by the design remain in liquid form.
If the final design is going to include more than one color, then a separate screen must be used to apply each layer of ink. To create multi-coloured products, the printer must use his skill to design each stencil, and line them up perfectly to ensure the final design is seamless.
4. Create the stencil
After the screen has been exposed for a set time, the areas of the screen not covered by the design will have turned hard. Any unhardened emulsion is then carefully rinsed away. This leaves a clear imprint of the design on the screen for the ink to pass through.
The screen is then dried, and the printer will make any necessary touch-ups or corrections to make the imprint as accurate as possible to the original design. The stencil is now ready to be used.
5. Prepare to print
The screen is then placed on the printing press. The item or garment being printed is laid down flat onto the printing board, underneath the screen. There are a number of different presses, including manual and automatic styles, but most modern commercial printers will use an automatic rotary carousel printer, as this allows several different screens to work at once. For multicolored prints, this sort of printer can also be used to apply the separate color layers in quick succession.
6. Ink
The screen is lowered down onto the printing board. Ink is added to the top end of the screen, and a squeegee is used to pull the ink along the full length of the screen. This presses the ink through the open areas of the stencil, imprinting the design on the product underneath. If the printer is creating multiple items, then the screen is raised and a new garment is placed onto the printing board. The process is then repeated. Once all the items have been printed and the stencil has served its purpose, the emulsion is removed using a special washing fluid so the mesh can be reused to create new stencils.
7. Product dry
The printed product then passes through a dryer, which ‘cures’ the ink and creates a smooth, colour fast inish. The final product will be checked and washed thoroughly to remove any residue, before being passed on to its new owner.
