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Cleaning agent for pcb dry film developing tank and its preparation method and application

A dry film and tank cleaning technology, used in cleaning methods and utensils, cleaning methods using liquids, chemical instruments and methods, etc., can solve the problems of pungent odor and unsatisfactory removal effect, and achieve good removal effect and good removal. rate, the effect of improving the yield rate

Active Publication Date: 2021-03-23
上海富柏化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But it only improves the problem of pungent smell to a certain extent, and cannot completely solve it
At the same time, such acid-based tank cleaning agents still have the problem that the removal effect on oil stains and stubborn polymer residues is not ideal.

Method used

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  • Cleaning agent for pcb dry film developing tank and its preparation method and application
  • Cleaning agent for pcb dry film developing tank and its preparation method and application
  • Cleaning agent for pcb dry film developing tank and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-11

[0051] Embodiments 1-11 all relate to a kind of cleaning agent for PCB dry film developing tank. In terms of mass percentage content, the raw material composition of each embodiment is as shown in Table 1:

[0052] Table 1.

[0053]

[0054] Preparation scheme: weigh each component according to the ratio in Table 1 and mix them evenly.

[0055] The method for cleaning the PCB dry film developing tank by using the cleaning agent of the embodiment:

[0056] A. Tank preparation method: Each 1L tank solution contains 700-900ml of clear water and 100-300ml of cleaning agent for PCB dry film developing tank;

[0057] B. Bath control and maintenance

[0058] Tank cleaning agent concentration 10-30%

[0059] Temperature 45±3℃

[0060] Time 2-4h (depending on the amount of sediment and the cleanliness of the developing tank)

[0061] Timing of tank cleaning Intermittent boards for 1-2 weeks, if continuous boards are 30,000-40,000 (ft 2 )

[0062] C. Cleaning steps

[0063] 1...

Embodiment 12-16

[0070] Embodiment 12-16 is all based on embodiment 2, and the difference with embodiment 2 is only: the composition of defoamer is different, specifically as shown in table 2,

[0071] Table 2.

[0072]

Embodiment 17-23

[0074] Embodiment 17-23 is all based on embodiment 2, and the difference with embodiment 2 is only: the type of organic solvent selected and consumption are different, specifically as shown in table 3,

[0075] table 3.

[0076]

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Abstract

The invention discloses a PCB dry film developing bath cleaning agent, and belongs to the technical field of developing bath cleaning agent. The PCB dry film developing bath cleaning agent comprises,by weight, 10 to 15% of an organic base, 3 to 8% of an organic solvent, 15 to 25% of an inorganic base, 8 to 12% of a chelating agent, 0.5 to 1.5% of a washing auxiliary agent, 0.5 to 3% of an osmoticagent, 2 to 8% of a defoaming agent, and the balance water. The organic base and the inorganic base are both water soluble base. The PCB dry film developing bath cleaning agent possesses no pungent smell, is friendly to the environment, is nontoxic, is excellent in washing effect, is capable of increasing removing rate on yellow attachment in developing bathes obviously, is especially excellent in removing effect on residues on components such as nozzles and rollers, and is beneficial for increasing of PCB developing processing qualified product rate. The invention also discloses a preparation method and applications of the PCB dry film developing bath cleaning agent.

Description

technical field [0001] The invention relates to the field of developing tank cleaning agent, more specifically, it relates to a PCB dry film developing tank cleaning agent and its preparation method and application. Background technique [0002] Dry film (Dry film) is relative to wet film (Wet film) in PCB coating. Dry film is a polymer compound that can produce a polymerization reaction to form a stable film after being irradiated by ultraviolet rays. The substance adheres to the surface of the board, thereby achieving the function of blocking electroplating and etching. [0003]  Dry film development is usually carried out in a developing tank filled with developing solution. The developer of the water-soluble dry film is 1-2% anhydrous sodium carbonate solution, and the liquid temperature is 30-40°C. The developing speed increases with the increase of temperature within the range. The developing temperature of different dry films is slightly different and needs to be ad...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C11D7/32C11D7/06C11D7/50C11D7/26C11D7/10C11D7/60B08B3/08B08B3/02B08B3/10
Inventor 饶猛夏金良莫庆生
Owner 上海富柏化工有限公司
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