Production process of full-opening composite screen plate of steel wire mesh and electroforming alloy plate

Abstract

The invention discloses a production process of a full-opening composite screen plate of a steel wire mesh and an electroforming alloy plate, and relates to the field of screen plate production, and the production process comprises the following steps: S1, carrying out inspection treatment on the steel wire mesh; s2, weaving treatment; s3, rolling treatment is conducted, specifically, the appearance of the steel wire mesh subjected to primary mesh flattening is inspected, the steel wire mesh is cleaned after being inspected to be qualified, rolling treatment is conducted on the steel wire mesh after cleaning is completed, and secondary mesh flattening treatment is conducted on the steel wire mesh after rolling treatment is completed; the warp steel wires are reserved according to the size of the prefabricated pattern, the woven steel wire mesh plate is cut into sheet-shaped mesh cloth, the sheet-shaped mesh cloth is evenly and flatly laid on an electroforming mold, and a nano coating is formed on the surface of the mold through vacuum evaporation; and S5, carrying out pasting treatment on the photoresist film. According to the production process of the full-opening composite screen plate of the steel wire mesh and the electroforming alloy plate, the composite screen plate manufactured by the process adopts a full-opening design, so that the printability of the screen plate is greatly improved, and the line height-width ratio and the printing filling are greatly improved.

Description

Technical Field

[0001] The invention relates to the field of mesh plate production, and in particular to a production process of a fully-open composite mesh plate of a steel mesh and an electroformed alloy plate. Background Art

[0002] The stencil is a stencil used by SMT production lines to print solder paste or patch adhesive on substrates such as PCBs and FPCs.

[0003] When preparing the stencil, most of them lack the weaving link, lack the weaving process of the warp and weft, which will affect the production of the subsequent alloy layer, the pattern production will also be affected, and its printability will also be affected to a certain extent. Its printing filling and line aspect ratio will also affect the quality of the stencil.

[0004] Therefore, it is necessary to propose a fully open composite mesh production process of steel wire mesh and electroformed alloy plate to solve the above problems. Summary of the invention

[0005] The main purpose of the present invention is to provide a production process for a fully-open composite mesh plate of a steel mesh and an electroformed alloy plate, which can effectively solve the problems in the background technology.

[0006] To achieve the above object, the technical solution adopted by the present invention is:

[0007] A production process for a fully open composite mesh plate of a steel mesh and an electroformed alloy plate comprises the following steps:

[0008] S1: Inspection of the wire mesh: including inspection of the diameter, tension and appearance of the wire mesh, wherein the diameter of the wire mesh is 11 microns, the tension of the wire mesh is 424N, and the appearance needs to be free of damage and corrosion;

[0009] S2: Weaving: Adjust and bolt the precision wire mesh weaving equipment, use the precision wire mesh weaving equipment to weave the inspected wire mesh, including sizing and threading. After weaving, remove it from the machine, flatten the woven wire mesh, and place it for standby after flattening.

[0010] S3: rolling and pressing treatment: the steel wire mesh after the first flattening is inspected for appearance, and after the inspection is qualified, it is cleaned, and after the cleaning is completed, it is simply packed into 40 tubes, and after the simple packing of 40 tubes is completed, it is cleaned, and after the cleaning is completed, it is rolled and pressed, and after the rolling and pressing treatment is completed, the steel wire mesh is flattened for the second time, and after the second flattening is completed, it is packed into 50 tubes, and after the 50 tubes are packed, it is placed for standby;

[0011] S4: Warp steel wire reservation: Warp steel wire is reserved according to the size of the prefabricated pattern, the woven steel wire mesh is cut into sheet-like mesh, and evenly laid on the electroforming mold. The mold surface is vacuum-deposited with nano-coating;

[0012] S5: application of photoresist film: apply photoresist film evenly on the surface of the evenly laid metal wire mesh, the thickness of the photoresist film is selected according to the designed thickness, including the following application steps: apply the photoresist on the steel wire mesh plate, bake it at a temperature of 200°C for 10 minutes, photolithography it after baking, development it after photolithography, baking it after development, and adjusting the electroforming tank after baking to generate an electroformed metal layer. After the electroformed metal layer is generated, stripping is performed, and impurities are cleaned by ultrasound. After cleaning, the net is stretched and tested.

[0013] Preferably, in step S3, a hydrocarbon solvent is used as a cleaning agent to clean the wire mesh plate, the surface of the wire mesh plate is first dehydrated, and after dehydration, the wire mesh plate is sprayed and cleaned with a hydrocarbon solvent, and after spray cleaning, the surface of the wire mesh plate is flushed and struck, wherein the spraying pressure is 6 MPa, and after cleaning, the wire mesh plate is dried by vacuum drying.

[0014] Preferably, in step S3, during rolling, the rolling range does not exceed 70%, the reduction rate of the first pass does not exceed 40%, the reduction rates of the next two passes do not exceed 60%, and the reduction rate of the last pass does not exceed 12%.

[0015] Preferably, in step S5, the photoresist comprises the following preparation steps:

[0016] 1. Preparation of reagents: tetrahydrofuran, cyclohexanone, N,N-dimethylformamide, ethylene glycol ethyl ether acetate, acetone, sodium hydroxide, film-forming resin, and photoinitiator;

[0017] 2. Add film-forming resin, photoinitiator, tetrahydrofuran, cyclohexanone, N,N-dimethylformamide, ethylene glycol ethyl ether acetate and sodium hydroxide to acetone to prepare a solution with a concentration of 10%-20%. Stir to make it completely dissolved, then perform coarse filtration, and then fine filtration through a 0.2μm filter element to complete the preparation of the photoresist.

[0018] Preferably, the film-forming resin is a polymer prepared under the conditions of an initiator concentration of 1%, a polymerization temperature of 70° C., and a monomer ratio of MMA:MA:MAC of 6:1:2.

[0019] Beneficial Effects

[0020] Compared with the prior art, the present invention provides a production process for a fully open composite mesh plate of a steel mesh and an electroformed alloy plate, which has the following beneficial effects:

[0021] 1. The fully open composite stencil production process of the steel mesh and electroformed alloy plate. The composite stencil produced by this process adopts a fully open design, which greatly improves the printability of the stencil, as well as the line aspect ratio and print filling. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a weaving flow chart of the steel wire mesh plate of the present invention;

[0023] Figure 2 It is the steel wire mesh weaving pattern designed by the present invention. DETAILED DESCRIPTION

[0024] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0025] like Figure 1-Figure 2 As shown, a production process of a fully open composite mesh plate of a steel mesh and an electroformed alloy plate includes the following steps:

[0026] S1: Inspection of the wire mesh: including inspection of the diameter, tension and appearance of the wire mesh. The diameter of the wire mesh is 11 microns, the tension of the wire mesh is 424N, and the appearance needs to be free of damage and corrosion;

[0027] S2: Weaving: Adjust and bolt the precision wire mesh weaving equipment, use the precision wire mesh weaving equipment to weave the inspected wire mesh, including sizing and threading. After weaving, remove it from the machine, flatten the woven wire mesh, and place it for standby after flattening.

[0028] S3: rolling and pressing treatment: the steel wire mesh after the first flattening is inspected for appearance, and after the inspection is qualified, it is cleaned, and after the cleaning is completed, it is simply packed into 40 tubes, and after the simple packing of 40 tubes is completed, it is cleaned, and after the cleaning is completed, it is rolled and pressed, and after the rolling and pressing treatment is completed, the steel wire mesh is flattened for the second time, and after the second flattening is completed, it is packed into 50 tubes, and after the 50 tubes are packed, it is placed for standby;

[0029] The steel mesh is cleaned by using hydrocarbon solvent as a cleaning agent. The steel mesh is first dehydrated on the surface. After dehydration, the steel mesh is sprayed and cleaned by using hydrocarbon solvent. After spray cleaning, the surface of the steel mesh is scourred and struck. The spray pressure is 6MPa. After cleaning, the steel mesh is dried by vacuum drying. During rolling, the rolling process does not exceed 70%, the reduction rate of the first pass does not exceed 40%, the reduction rate of the next two passes does not exceed 60%, and the reduction rate of the last pass does not exceed 12%;

[0030] S4: Warp steel wire reservation: Warp steel wire is reserved according to the size of the prefabricated pattern, the woven steel wire mesh is cut into sheet-like mesh, and evenly laid on the electroforming mold. The mold surface is vacuum-deposited with nano-coating;

[0031] S5: applying the photoresist film: applying the photoresist film evenly on the surface of the evenly laid metal wire mesh, the thickness of the photoresist film is selected according to the designed thickness, including the following applying steps: applying the photoresist on the steel wire mesh plate, baking it at a temperature of 200°C for 10 minutes, photolithography after baking, developing after photolithography, baking after development, preparing the electroforming tank after baking, so as to generate the electroformed metal layer, stripping after the electroformed metal layer is generated, cleaning the impurities by ultrasonic wave, and stretching the net and testing after cleaning;

[0032] The photoresist preparation process includes the following steps:

[0033] 1. Preparation of reagents: tetrahydrofuran, cyclohexanone, N,N-dimethylformamide, ethylene glycol ethyl ether acetate, acetone, sodium hydroxide, film-forming resin, and photoinitiator, wherein the film-forming resin is a polymer prepared under the conditions of an initiator concentration of 1%, a polymerization temperature of 70°C, and a monomer ratio of MMA:MA:MAC of 6:1:2;

[0034] 2. Add film-forming resin, photoinitiator, tetrahydrofuran, cyclohexanone, N,N-dimethylformamide, ethylene glycol ethyl ether acetate and sodium hydroxide to acetone to prepare a solution with a concentration of 10%-20%. Stir to make it completely dissolved, then perform coarse filtration, and then fine filtration through a 0.2μm filter element to complete the preparation of the photoresist.

[0035] The performance of the fully open composite mesh prepared by this process is compared with the common mesh on the market, wherein the fully open composite mesh prepared by this process is an embodiment, and the common mesh on the market is recorded as a comparative example. The following is a comparison table:

[0036]

[0037] It can be seen that the performance of the fully open composite mesh produced by this process is better than the common mesh on the market.

[0038] The composite stencil produced by this process adopts a fully open design, which greatly improves the printability of the stencil, as well as the line aspect ratio and print filling.

[0039] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A process for producing a fully open composite mesh of a steel mesh and an electroformed alloy plate, characterized in that: The steps include: S1: Inspection of the wire mesh: including inspection of the diameter, tension and appearance of the wire mesh, wherein the diameter of the wire mesh is 11 microns, the tension of the wire mesh is 424N, and the appearance needs to be free of damage and corrosion; S2: Weaving: Adjust and bolt the precision wire mesh weaving equipment, use the precision wire mesh weaving equipment to weave the inspected wire mesh, including sizing and threading. After weaving, remove it from the machine, flatten the woven wire mesh, and place it for standby after flattening. S3: rolling and pressing treatment: the steel wire mesh after the first flattening is inspected for appearance, and after the inspection is qualified, it is cleaned, and after the cleaning is completed, it is simply packed into 40 tubes, and after the simple packing of 40 tubes is completed, it is cleaned, and after the cleaning is completed, it is rolled and pressed, and after the rolling and pressing treatment is completed, the steel wire mesh is flattened for the second time, and after the second flattening is completed, it is packed into 50 tubes, and after the 50 tubes are packed, it is placed for standby; S4: Warp steel wire reservation: Warp steel wire is reserved according to the size of the prefabricated pattern, the woven steel wire mesh is cut into sheet-like mesh, and evenly laid on the electroforming mold. The mold surface is vacuum-deposited with nano-coating; S5: application of photoresist film: apply photoresist film evenly on the surface of the evenly laid metal wire mesh, the thickness of the photoresist film is selected according to the designed thickness, including the following application steps: apply the photoresist on the steel wire mesh plate, bake it at a temperature of 200°C for 10 minutes, photolithography it after baking, development it after photolithography, baking it after development, and adjusting the electroforming tank after baking to generate an electroformed metal layer. After the electroformed metal layer is generated, stripping is performed, and impurities are cleaned by ultrasound. After cleaning, the net is stretched and tested.

2. The process for producing a fully open composite mesh of a steel mesh and an electroformed alloy plate according to claim 1, characterized in that: In the step S3, hydrocarbon solvent is used as a cleaning agent to clean the wire mesh plate. The surface of the wire mesh plate is first dehydrated. After dehydration, the wire mesh plate is sprayed and cleaned with hydrocarbon solvent. After the spray cleaning is completed, the surface of the wire mesh plate is flushed and struck, wherein the spray pressure is 6 MPa. After the cleaning is completed, the wire mesh plate is dried by vacuum drying.

3. The process for producing a fully open composite mesh of a steel mesh and an electroformed alloy plate according to claim 1, characterized in that: In step S3, during rolling, the rolling range does not exceed 70%, the reduction rate of the first pass does not exceed 40%, the reduction rates of the next two passes do not exceed 60%, and the reduction rate of the last pass does not exceed 12%.

4. The process for producing a fully-open composite mesh of a steel mesh and an electroformed alloy plate according to claim 1, characterized in that: In step S5, the photoresist comprises the following preparation steps:

1. Preparation of reagents: tetrahydrofuran, cyclohexanone, N,N-dimethylformamide, ethylene glycol ethyl ether acetate, acetone, sodium hydroxide, film-forming resin, and photoinitiator; 2. Add film-forming resin, photoinitiator, tetrahydrofuran, cyclohexanone, N,N-dimethylformamide, ethylene glycol ethyl ether acetate and sodium hydroxide to acetone to prepare a solution with a concentration of 10%-20%. Stir to make it completely dissolved, then perform coarse filtration, and then fine filtration through a 0.2μm filter element to complete the preparation of the photoresist.

5. The process for producing a fully open composite mesh of a steel mesh and an electroformed alloy plate according to claim 4, characterized in that: The film-forming resin is a polymer prepared under the conditions of an initiator concentration of 1%, a polymerization temperature of 70° C., and a monomer ratio of MMA:MA:MAC of 6:1:2.

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