Screen making process

Abstract

The present invention discloses a screen manufacturing process, comprising the following steps: using warps and wefts of different materials to weave together to prepare a metal mesh cloth with a square grid; then cutting the metal mesh cloth into squares; then using an etching solution to corrode the warps and wefts of the metal mesh cloth; then cleaning the metal mesh cloth and drying it; then stretching the grid of the metal mesh cloth from a square to a rhombus; then coating the metal mesh cloth with a water-based material; and then completing subsequent plate-making steps according to a conventional process. The present invention uses an etching solution to corrode the warps and wefts of the metal mesh cloth, which can create gaps between the warps and wefts at the mesh knots, making it more convenient to stretch the grid of the metal mesh cloth from a square to a rhombus. When the present invention uses an etching solution to corrode the warps and wefts of the metal mesh cloth, a brush roller is used to brush the warps and wefts of the metal mesh cloth, which can accelerate the corrosion rate of the warps and wefts, improve the corrosion efficiency, and increase production capacity.

Description

Technical Field

[0001] The invention relates to a screen printing plate manufacturing process. Background Art

[0002] Screen printing requires screens, and existing screens are mainly composed of square mesh metal mesh, polymer film and screen frame. With the development of screen technology, the use of diamond mesh metal mesh has become an option, which requires stretching the metal mesh from square to diamond before preparing the screen. However, the mesh knots of existing metal mesh are not easy to move, and it is not easy to stretch the mesh. Summary of the invention

[0003] The object of the present invention is to provide a screen printing process, comprising the following steps:

[0004] The metal mesh cloth with square grids is prepared by mixing warp and weft threads of different materials;

[0005] Then the metal mesh is cut into squares, with one pair of opposite sides of the square parallel to the warp and the other pair of opposite sides of the square parallel to the weft;

[0006] Then, an etching solution is used to corrode the warp and weft of the metal mesh cloth, so that gaps are generated between the warp and weft threads at the mesh knots of the metal mesh cloth;

[0007] The metal mesh is then cleaned and dried;

[0008] Then, a mesh stretching mechanism is used to stretch the mesh of the metal mesh from a square to a diamond, so that a pair of right-angled diagonals in the square mesh are stretched into a pair of acute angles in the diamond mesh, and another pair of right-angled diagonals in the square mesh are stretched into a pair of obtuse angles in the diamond mesh, and the angle of the pair of acute angles in the diamond mesh reaches a predetermined angle;

[0009] Then the diamond-shaped metal mesh is coated with a layer of water-clearing material and dried;

[0010] Then follow the normal process to complete the subsequent plate making steps.

[0011] Preferably, the warp wire is made of tungsten steel.

[0012] Preferably, the weft is made of copper.

[0013] Preferably, the etching solution contains hydrochloric acid and / or nitric acid.

[0014] Preferably, when the etching solution is used to corrode the warp and weft of the metal mesh cloth, a brush roller is used to brush the warp and weft of the metal mesh cloth.

[0015] Preferably, a pair of brush rollers are used to reciprocately brush the front and back sides of the metal mesh cloth respectively.

[0016] Preferably, the pair of brush rollers are perpendicular to each other.

[0017] Preferably, the predetermined angle ranges from 5 to 25 degrees.

[0018] Preferably, the subsequent plate-making steps are completed according to conventional processes, including: stretching the screen, laser or chemical etching to remove yarn, degreasing, hot pressing of polymer material film, laser patterning, and inspection.

[0019] The advantages and beneficial effects of the present invention are:

[0020] A screen manufacturing process is provided, which uses an etching solution to corrode the warp and weft of a metal mesh cloth, so that gaps are generated between the warp and weft at the mesh knots, so as to stretch the grid of the metal mesh cloth from a square to a diamond shape.

[0021] The present invention adopts warp threads and weft threads of different materials to mix and weave the metal mesh cloth, which can be more conducive to the etching solution to corrode and generate gaps at the mesh knots.

[0022] When the etching solution is used to corrode the warp and weft of the metal mesh cloth, a brush roller is used to brush the warp and weft of the metal mesh cloth, and in particular, a pair of mutually perpendicular brush rollers are used to reciprocately brush the front and back sides of the metal mesh cloth, which can accelerate the corrosion rate of the warp and weft, improve the corrosion efficiency, and increase the production capacity.

[0023] The present invention coats the diamond-shaped metal mesh with a layer of water-clearing material, so that the metal mesh and the subsequent polymer material film can be more easily combined.

[0024] As high mesh count and low wire diameter become the market trend, how to increase the service life of the screen while removing the least yarn, the importance of the straightness of the mesh itself is increasing. The present invention optimizes the activity of the mesh knot, thereby achieving the effect of reducing the number of yarns to be removed. DETAILED DESCRIPTION

[0025] The specific implementation of the present invention is further described below in conjunction with the examples. The following examples are only used to more clearly illustrate the technical solutions of the present invention, and cannot be used to limit the protection scope of the present invention.

[0026] The present invention provides a screen printing process, comprising the following steps:

[0027] The metal mesh cloth with square grids is prepared by mixing warp and weft threads of different materials;

[0028] Then the metal mesh is cut into squares, with one pair of opposite sides of the square parallel to the warp and the other pair of opposite sides of the square parallel to the weft;

[0029] Then, an etching solution is used to corrode the warp and weft of the metal mesh cloth, so that gaps are generated between the warp and weft of the metal mesh cloth at the mesh knots; and when the etching solution is used to corrode the warp and weft of the metal mesh cloth, a pair of mutually perpendicular brush rollers are used to reciprocately brush the front and back sides of the metal mesh cloth respectively;

[0030] The metal mesh is then cleaned and dried;

[0031] Then, a mesh stretching mechanism is used to stretch the mesh of the metal mesh from a square to a diamond, so that a pair of right-angled diagonals in the square mesh are stretched into a pair of acute angles in the diamond mesh, and another pair of right-angled diagonals in the square mesh are stretched into a pair of obtuse angles in the diamond mesh, and the angle of the pair of acute angles in the diamond mesh reaches a predetermined angle;

[0032] Then the diamond-shaped metal mesh is coated with a layer of water-clearing material and dried;

[0033] Then follow the normal process to complete the subsequent plate making steps.

[0034] Specific:

[0035] The warp is made of tungsten steel.

[0036] The weft is made of copper.

[0037] The etching solution contains hydrochloric acid and / or nitric acid.

[0038] The predetermined angle ranges from 5 to 25 degrees.

[0039] The subsequent plate-making steps are completed according to the conventional process, including: stretching the screen, laser or chemical etching to remove yarn, degreasing, hot pressing the polymer material film, laser patterning, and inspection.

[0040] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. Screen making process, characterized in that: The steps include: The metal mesh cloth with square grids is prepared by mixing warp and weft threads of different materials; Then the metal mesh is cut into squares, with one pair of opposite sides of the square parallel to the warp and the other pair of opposite sides of the square parallel to the weft; Then, an etching solution is used to corrode the warp and weft of the metal mesh cloth, so that gaps are generated between the warp and weft at the mesh knots; and when the etching solution is used to corrode the warp and weft of the metal mesh cloth, a pair of mutually perpendicular brush rollers are used to reciprocately brush the front and back sides of the metal mesh cloth respectively; The metal mesh is then cleaned and dried; Then, a mesh stretching mechanism is used to stretch the mesh of the metal mesh from a square to a diamond, so that a pair of right-angled diagonals in the square mesh are stretched into a pair of acute angles in the diamond mesh, and another pair of right-angled diagonals in the square mesh are stretched into a pair of obtuse angles in the diamond mesh, and the angle of the pair of acute angles in the diamond mesh reaches a predetermined angle; Then the diamond-shaped metal mesh is coated with a water-clearing material; Then, the subsequent plate-making steps are completed according to the conventional process; the subsequent plate-making steps are completed according to the conventional process, including: stretching the net, laser or chemical etching to remove yarn, degreasing, hot pressing the polymer material film, laser patterning, and inspection.

2. The screen making process according to claim 1, characterized in that: The warp is made of tungsten steel.

3. The screen making process according to claim 2, characterized in that: The weft is made of copper.

4. The screen making process according to claim 3, characterized in that: The etching solution contains hydrochloric acid and / or nitric acid.

5. The screen making process according to claim 1, characterized in that: The predetermined angle range is 5 to 25 degrees.