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About pad printing

Filename About pad printing.docx
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Revision Date 2020/08/26
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About the new trend of pad printing.

The relationship between pad printing and printing (pad printing principle):

Pad printing is a kind of intaglio. The ink is covered on the cliche; then use a blade to scrape off the ink on the surface. The printed pattern is the part where the ink is left in the etched area. Then use a printing pad to pick up the ink and transfer to the object. There are various materials can be printed, such as plastic casing, metal and high technology related products, etc. Compare with screen printing, pad printing is more suitable for printing small areas, thin lines, and concave and convex surfaces. 

The after-printed ink thickness of pad printing is much thinner than screen printing. Most pad printing cliche depth is set at 0.025mm. But if you use the pad printer with thermostatic system, the cliche depth can be adjusted to 0.035mm and the ink temperature can be raised during printing, promoting the volatilization speed during ink transferring in order to achieve complete ink deposit. Moreover, 【the ink opacity will be improved greatly】, reaching the ink thickness that cannot be achieved in past pad printing.

...click here to see complete introduction for thermostatic pad printer.

 

Jigs (Aids)

  • If the printing object is very thin and light, the platform with suction

    • function is recommended. Espically for those with large printing

    • pattern. When the pattern is big and the printed object is thin and

    • light, the ink will stick the object toghther with the screen. The suction

    • function is also used for the convenience of the fixed position.

 

  • Superstrength healant is commonly used to make the aids because it

    • is done fast and convenient.  Other materials like mealamine resin

    • and epoxy can also be used.

 

  • No matter what kind of the printing metheds used, it is very important to

    • keep the objects horizontal. However, the screen printing method

    • is the most severe.

 

  • If the printed pattern is very close to the edge of the object, it is the best

    • to add a pedestal to avoid center point of the pad hanging in the

    • air. This may cause the deformation of the pattern.

 

  • If the printed object is soft, it is better to place a padding block

    • underneath the printed object.


 

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