Dry film foamability evaluation device

Abstract

The utility model relates to a dry film detection device, in particular to a dry film foamability evaluation device, which comprises a measuring cylinder, a detection device and a control device, the measuring cylinder is provided with scale marks arranged in the vertical direction, and the measuring cylinder is used for containing developing liquid; the hollow glass tube is placed in the measuring cylinder, the hollow glass tube is provided with a first end and a second end which are oppositely arranged, a through airflow channel is formed between the first end and the second end of the hollow glass tube, the first end of the hollow glass tube abuts against the bottom wall of the measuring cylinder, and the second end of the hollow glass tube is used for introducing gas. According to the structure of the utility model, the hollow glass tube is arranged in the measuring cylinder for containing the developing solution, and external airflow is introduced into the bottom of the measuring cylinder through the hollow glass tube for bubbling, so that the bubbling performance of the dry film can be quickly and intuitively evaluated.

Description

Technical Field

[0001] This utility model relates to a dry film testing device, and more particularly to a dry film foaming property evaluation device. Background Technology

[0002] The description in this section provides only background information related to the disclosure of this utility model and does not constitute prior art.

[0003] During dry film development, unexposed portions dissolve into the alkaline developer. Since the developer circulates within the developing tank, the amount of dissolved dry film increases, leading to more and more bubbles. This negatively impacts the developing effect and reduces production efficiency. Currently, there are two main methods to reduce dry film foaming: one is to add a certain proportion of defoamer to the developer to quickly eliminate the bubbles; the other is to reduce foaming through formulation design. The second method is generally more prevalent.

[0004] However, how to evaluate the foaming performance of dry films to provide guidance for formulation design has become a problem that needs to be solved.

[0005] It should be noted that the above introduction to the technical background is only for the purpose of providing a clear and complete explanation of the technical solutions of this utility model and facilitating understanding by those skilled in the art. It should not be assumed that these technical solutions are known to those skilled in the art simply because they have been described in the background section of this utility model. Utility Model Content

[0006] The purpose of this invention is to provide a device for evaluating the foaming properties of dry films. By setting a hollow glass tube in a graduated cylinder used to hold the developer, external airflow is introduced into the bottom of the graduated cylinder through the hollow glass tube and foams are generated. Therefore, the foaming performance of dry films can be quickly and intuitively evaluated.

[0007] To achieve the above objectives, this utility model discloses a dry film foaming property evaluation device for detecting foaming in a developer solution. The dry film foaming property evaluation device includes:

[0008] A graduated cylinder having vertically arranged graduation lines, the graduated cylinder being used to hold the developing solution;

[0009] A hollow glass tube is placed in the measuring cylinder. The hollow glass tube has a first end and a second end that are arranged opposite to each other. There is a through airflow channel between the first end and the second end of the hollow glass tube. The first end of the hollow glass tube abuts against the bottom wall of the measuring cylinder, and the second end of the hollow glass tube is used to introduce gas.

[0010] As a further description of the above technical solution, the dry film foaming property evaluation device also includes a compressed air supply device, which is connected to the second end of the hollow glass tube via a rubber tube, and is used to supply airflow to the second end of the hollow glass tube.

[0011] As a further description of the above technical solution, the dry film foaming property evaluation device also includes an air flow meter. The input end of the air flow meter is connected to the compressed air supply device through a rubber tube, and the output end of the air flow meter is connected to the second end of the hollow glass tube through a rubber tube. The air flow meter is used to adjust the air flow rate from the compressed air supply device.

[0012] As a further description of the above technical solution, the dry film foaming evaluation device also includes a height recorder and a time recorder. The height recorder is used to record the maximum floating height of the bubble, and the time recorder is used to record the time taken for the bubble to completely disappear from its formation.

[0013] As a further description of the above technical solution, the bottom of the hollow glass tube is filled with a weight so that when the developing solution is contained in the graduated cylinder, the hollow glass tube still sinks to the bottom of the graduated cylinder.

[0014] As a further description of the above technical solution, the weight is set as quartz or metal that does not react with the airflow.

[0015] As a further description of the above technical solution, the hollow glass tube is placed coaxially with the measuring cylinder.

[0016] Based on the above technical solution, the beneficial effects of this utility model are as follows:

[0017] This invention relates to a dry film foaming property evaluation device. A hollow glass tube is placed inside a graduated cylinder containing the developer. External airflow is introduced from the second end at the top of the hollow glass tube to the first end at the bottom. The first end of the hollow glass tube is in contact with the bottom surface of the graduated cylinder, allowing the airflow to disperse evenly and escape into the developer at the bottom of the graduated cylinder, forming uniform bubbles. The operator can then visually and quickly evaluate the foaming property of the dry film. The device has a simple structure and stable operation.

[0018] To further understand the features and technical content of this utility model, please refer to the following detailed description and drawings of this utility model. However, the drawings provided are for reference and illustration only and are not intended to limit this utility model. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments or prior art of this specification, the drawings used in the description of the embodiments or prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this specification. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of a dry film foaming property evaluation device provided in the embodiments of this specification;

[0021] In the diagram: 1. Measuring cylinder; 11. Scale mark; 2. Hollow glass tube; 21. Airflow channel; 22. Weight; 3. Compressed air supply device; 4. Air flow meter; 5. Rubber hose. Detailed Implementation

[0022] To enable those skilled in the art to better understand the technical solutions in this specification, the technical solutions in the embodiments of this specification will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this specification, and not all embodiments. Based on the embodiments in this specification, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this specification.

[0023] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can understand the advantages and effects of this utility model from the content disclosed in this specification. This utility model can be implemented or applied through other different specific embodiments, and various details in this specification can also be modified and changed based on different viewpoints and applications without departing from the concept of this utility model. Furthermore, the accompanying drawings of this utility model are for simple illustration only and are not depictions of actual dimensions, as stated in advance. The following embodiments will further describe the relevant technical content of this utility model in detail, but the disclosed content is not intended to limit the scope of protection of this utility model.

[0024] It should be understood that while terms such as "first," "second," and "third" may be used in this document to describe various components or signals, these components or signals should not be limited by these terms. These terms are primarily used to distinguish one component from another, or one signal from another. Furthermore, the term "or" as used herein should, as appropriate, include any combination of one or more of the related listed items.

[0025] Please see Figure 1 This embodiment provides a dry film foaming assessment device for detecting foaming in a developer solution. The dry film foaming assessment device includes:

[0026] Graduated cylinder 1 has vertically arranged graduation lines 11 and is used to hold developer solution.

[0027] Hollow glass tube 2 is placed in graduated cylinder 1. Hollow glass tube 2 has a first end and a second end that are arranged opposite to each other. There is a through airflow channel 21 between the first end and the second end of hollow glass tube 2. The first end of hollow glass tube 2 abuts against the bottom wall of graduated cylinder 1. The second end of hollow glass tube 2 is used to introduce gas.

[0028] For the above structure, during installation, select a graduated cylinder 1 and a hollow glass tube 2 of corresponding dimensions. Specifically, the height of the hollow glass tube 2 is generally considered to be greater than the height of the graduated cylinder 1 to avoid excessive developer and the possibility of developer flowing back into the hollow glass tube 2 from the top. Simultaneously, the bottom of the first end of the hollow glass tube 2 is evenly fitted against the bottom wall of the graduated cylinder 1, but not sealed; it is preferably placed against the bottom wall of the graduated cylinder 1 to facilitate the even escape of gas.

[0029] With the above structure, during use, the operator only needs to fill the measuring cylinder 1 with the developer solution containing a portion of the dry film to be tested. Compressed gas is injected from the airflow channel 21 at the second end of the hollow glass tube 2. The airflow flows from the second end of the hollow glass tube 2 to the first end, and escapes evenly to the bottom of the measuring cylinder 1 through the gap created by the limited air pressure between the hollow glass tube 2 and the measuring cylinder 1, ultimately forming bubbles. Then, the operator can begin to record the buoyancy height and residence time of the bubbles, thus enabling the assessment of the foaming properties of the dry film based on the above data.

[0030] Furthermore, the dry film foaming property evaluation device also includes a compressed air supply device 3, which is connected to the second end of the hollow glass tube 2 via a rubber tube 5. The compressed air supply device 5 is used to supply airflow to the second end of the hollow glass tube 3. The compressed air supply device 3 can be configured as an air pump, which can continuously and stably input airflow into the vector cylinder 1 and form bubbles in the developer.

[0031] Furthermore, the dry film foaming assessment device also includes an air flow meter 4. The input end of the air flow meter 4 is connected to the compressed air supply device 3 via a rubber tube 5, and the output end of the air flow meter 4 is connected to the second end of the hollow glass tube 2 via a rubber tube 5. The air flow meter 4 is used to adjust the air flow rate from the compressed air supply device 3. In some cases, due to differences in the density and dissolved dry film amount of the developer solution to be tested, the airflow into the developer solution needs to be adjusted. The operator can fine-tune the air flow meter 4 to adjust the airflow rate of the compressed air supply device 3 into the hollow glass tube 2 to meet the requirements.

[0032] In the above embodiments, the rubber tube 5 used for airflow transmission is made of flexible material, which is convenient to adapt to the movement of the measuring cylinder 1, hollow glass tube 2, compressed air supply device 3 or air flow meter 4 and changes in height. In fixed scenarios, polyvinyl chloride tubes can also be used to eliminate air leakage and achieve more stable airflow transmission.

[0033] Furthermore, the dry film foaming assessment device also includes a height recorder and a time recorder. The height recorder records the maximum buoyancy height of the bubbles, and the time recorder records the entire process from bubble formation to complete disappearance. With this structure, after airflow is introduced into the developer in the measuring cylinder 1 and bubbles form, the bubbles rise. The height recorder records the maximum buoyancy height of the bubbles. Simultaneously, the bubbles may gradually disappear. Therefore, the time recorder can record the entire process from bubble formation to complete disappearance. Based on this, operators can further analyze the foaming properties of the dry film in the developer by collecting the above two data points, facilitating subsequent improvements to the dry film.

[0034] Furthermore, a weight 22 is filled at the bottom of the hollow glass tube 2 so that the hollow glass tube 2 remains at the bottom of the measuring cylinder 1 even when it contains developing solution. This structure allows the measuring cylinder 1 to be stabilized during ventilation simply by placing the hollow glass tube 2 vertically in the measuring cylinder 1, thanks to the weight 22 supporting the hollow glass tube 2. This method is more convenient than other fixing methods. Specifically, the weight 22 is made of quartz or metal that does not react with the airflow. The amount of quartz or metal used is determined based on the actual stability required to maintain the hollow glass tube 2.

[0035] Furthermore, the hollow glass tube 2 is placed coaxially with the measuring cylinder 1. Through the above structure, the airflow from the second end of the hollow glass tube 2 can be made more uniform, and the bubbles formed in the developing solution at the bottom of the measuring cylinder 1 can be more easily observed.

[0036] The above-disclosed content is only a preferred and feasible embodiment of the present utility model, and is not intended to limit the scope of the patent application of the present utility model. Therefore, all equivalent technical changes made using the contents of the present utility model specification and drawings are included in the scope of the patent application of the present utility model.

[0037] The various embodiments in this specification are described in a progressive manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on describing the differences from other embodiments.

[0038] Although this application has been described by way of examples, those skilled in the art will know that this application has many modifications and variations without departing from the spirit of this application, and it is intended that the appended embodiments include these modifications and variations without departing from this application.

Claims

1. A dry film foaming property assessment device for detecting foaming in a developer, wherein, The developing solution contains dissolved dry film, characterized in that the dry film foaming property assessment device comprises: A graduated cylinder having vertically arranged graduation lines, the graduated cylinder being used to hold the developing solution; A hollow glass tube is placed in the measuring cylinder. The hollow glass tube has a first end and a second end that are arranged opposite to each other. There is a through airflow channel between the first end and the second end of the hollow glass tube. The first end of the hollow glass tube abuts against the bottom wall of the measuring cylinder, and the second end of the hollow glass tube is used to introduce gas.

2. The dry film foaming property evaluation device according to claim 1, characterized in that: The dry film foaming property evaluation device also includes a compressed air supply device, which is connected to the second end of the hollow glass tube via a rubber tube, and is used to supply airflow to the second end of the hollow glass tube.

3. The dry film foaming property evaluation device according to claim 2, characterized in that: The dry film foaming property assessment device also includes an air flow meter. The input end of the air flow meter is connected to the compressed air supply device via a rubber tube, and the output end of the air flow meter is connected to the second end of the hollow glass tube via a rubber tube. The air flow meter is used to adjust the air flow rate from the compressed air supply device.

4. The dry film foaming property evaluation device according to claim 1, characterized in that: The dry film foaming assessment device also includes a height recorder and a time recorder. The height recorder is used to record the maximum buoyancy height of the bubble, and the time recorder is used to record the time taken for the bubble to completely disappear from its formation.

5. The dry film foaming property evaluation device according to claim 1, characterized in that: The bottom of the hollow glass tube is filled with a weight so that the hollow glass tube remains at the bottom of the graduated cylinder even when the developing solution is contained in the graduated cylinder.

6. The dry film foaming property evaluation device according to claim 5, characterized in that: The weight is made of quartz or metal that does not react with the airflow.

7. The dry film foaming property evaluation device according to claim 1, characterized in that: The hollow glass tube is placed coaxially with the measuring cylinder.

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