Photo-imageable Lpi Etching And Plating Resist Ink

We are engaged in offering excellent quality Photo-imageable LPI Etching and Plating Resist Ink to our valuable clients. It is a new kind of photoimageable etching and plating resist ink. Its excellent coating ability can be totally shown via various coating methods. Sharp definition, high accuracy and very minor under cut make it extremely suitable for producing one side, double-sided , high precision multi-layer and flexible Metal. Its acid-resistant ink which good for the boards such as stainless steel , iron and aluminous material. The special characteristic is can be for plating without post-cure.

Example of operation process:

1. Ink mixing
Mixing(Shaking) well for 5-10 min.

2. Pretreatment
Mechanical brushing or acid treatment.

3. Screen printing
a. Use nylon, polyester or stainless steel screen for printing
b. 100-250 mesh/inch.
c. Rubber/Polyurethane (PU) Squeege with the hardness of -65-75 .
d. Printing Angle 70-80
e. Film thickness: 8-16 um

4. Precure
First side 75A 5 x 10 min
Second side 75A 5 x 15 min
Both side cure at the same time 75A 5 x 15 min

5. Exposure
Energy required from UV rays:100-200mj/cm2
Photographic sensitivity :300-500nm
(Photosensitivity: 6-9 step)

6. Developing
By 1-1.2% sodium carbonate (Na2CO3) solution
Spraying pressure:2-3 kg/cm2
Temperature: 30-32
Time: 45-60 sec.

7. Stripping
The coating could be stripped completely with 3-5% NaOH solution at 45-50;