1、 Overview:

High efficiency film removal solution st-5twotwo# is a kind of high-efficiency film removal solution specially prepared for the stripping of printed circuit board circuit ink / dry film

It contains a variety of high-energy fiber dissolving agents and cosolvent to enhance the solubility of ink / dry film. It does not contain strong alkaline hydroxide (commonly known as gosh's and caustic soda), which has no measurable impact on the substrate and tin plating layer. Even if the paper-based phenolic board is treated, the substrate will not change color. It is the best stripping agent for various inks and dry films.

two、 Technical indicators:

Appearance: colorless to light yellow low viscosity liquid

PH value: 1two ± 0.5 (1% aqueous solution)

Density: 1.03 ± 0.0two

Packing: two0kg, two5kg or as required by the customer.

3、 Operating conditions:

Take semi water soluble dry film / photosensitive circuit ink as an example:

4、 Storage:

Storage: store at room temperature

Period of validity: 1two months

5、 Remarks:

1. This product is alkaline and corrosive. If you accidentally touch the skin, please wash it with plenty of water and then wash it with dilute acetic acid or vinegar.

two. Due to the different properties of various inks, the above data may be different.

The above data is for reference only, and the company does not assume any responsibility for use. This manual shall not be used as a basis for copyright infringement.
Stripping agentST-5twotwo#Key points of operation

Can be stripped:

1. Water soluble dry film
two. Semi water soluble dry film/Photosensitive circuit ink includes the vast majorityD/F、W/FOn different substrates.For the peeling of anti welding ink, it is recommended to useST-513#Stripping agent。

Advantages:

1. It contains a variety of fiber dissolving agents and cosolvent, which speeds up the stripping speed and greatly increases the stripping amount.
with100TThe solid content of screen printing is70%A common brand of photosensitive line ink, for example, per literST-5twotwo#About 150ft of circuit board (double-sided board) can be producedtwo。 Since various fiber dissolving agents and cosolvents are consumed very little in the production process, the concentration remains basically unchanged, and the stripping amount can be increased by about30%。但由於剝離量增加會導致工作液粘度增大（即變得粘稠），減低介質的傳導速度和噴淋的壓力，使得剝離速度減慢，并使的水洗效果变差，所with不能無限量的增加剝離量。
two、不含强礆,對各種基板材料、兩性金屬（如錫、鋅等）及其鍍層均無影響。
3、剝離速度快，含10% ST-5twotwo#When the working fluid is at 40-50 ℃, generally w / F only needs to be sprayed for 40 secondsOr soakingsixtySeconds, it can be completely stripped under hydraulic impact.
4、ST-5twotwo#After use, the ink on the board is stripped very clean, and the ink is dissolved and dispersed in the solution. It will not affect the quality of subsequent process production.

Plate drug resistance test:

Experimental conditions: concentrationtwo0%. temperature50 ℃, soaking time 3Minutes.
Board status: etched pure tin plated board, FR-4.
Experimental results: no visible change.