TW201600934A - Manufacturing method for screen material matte surface - Google Patents

Abstract

The present invention provides a manufacturing method for screen material matte surface, which mainly uses electrochemical reaction to conduct oxidation-reduction on the metal screen material surface, so as to corrode the screen material to form multiple concaves on the surface. By using the method of this invention to form matte surface of metal screen material, light reflection can be reduced, thereby improving the glue residue at the crisscross triangulate section of weft and warp lines during the manufacturing process of screen material.

Description

Net material surface atomization production method

The invention relates to a method for fabricating a surface of a net material, in particular to a method for atomizing a surface of a net material by atomizing the net material to improve the formation of a triangular intercept point at the intersection of the warp and weft lines due to the reflection of the light on the net material. .

Screen printing is an important tool for screen printing. It can also be said to be an important basis for screen printing. It is mainly made up of Tedron fiber, nylon fiber or metal mesh cloth, which is cross-woven in the warp and weft directions. The tension is opened and fixed on a frame. In addition to forming the pattern, the screen version also controls the amount of ink that can be transmitted during screen printing. Therefore, the structure of the screen version is very large for the precision of printing, the thickness of ink, and the amount of ink permeation. Impact.

The manufacturing principle of the screen is to use the chemical reaction of the emulsion to the ultraviolet light and the mesh formed by the warp and weft of the screen to perform photosensitive plate making, so that the non-printed portion is photohardened to block the mesh, and In the printed part, the emulsion is not chemically reacted, and it dissolves and empties when it is in contact with water, thereby forming a pattern required for printing. When screen printing is performed, the operator can apply pressure by the doctor blade to scrape the ink, so that the ink is printed on the printed matter through the hollow mesh to achieve the printing purpose.

However, in the conventional screen manufacturing method, especially in the process of manufacturing a screen using a metal mesh, since the metal material has a characteristic of reflecting light, the mesh composed of the metal material may have ultraviolet rays. The light is reflected from the non-printed portion to the printed portion, and the emulsion applied to the screen printing portion is hardened by ultraviolet light irradiation, thereby causing the screen printing portion to be incapable of being imaged. The first figure is a schematic diagram of a screen structure formed by a conventional screen printing process. As shown in the first figure, the above situation will cause the original screen to be hollowed out of the printed portion 91, in the latitude and longitude lines. The staggered portion remains with a hardened emulsion to form a triangular cut point 92, thus affecting the printing function of the screen. In addition, as the industry's requirements for the printed wire diameter become more and more fine, the proportion of the triangular cut point formed by the above-mentioned reasons on the screen is relatively large, resulting in the problem that the ink cannot be inked during printing.

Based on the above reasons, one of the main objects of the present invention is to provide a method for fabricating a surface of a net material by performing an oxidation reaction on the surface of the metal mesh material to atomize the mesh material, thereby reducing the metal mesh material. The reflectivity of the light, which in turn improves the formation of triangular cuts in the screen print portion.

Another object of the present invention is to provide a method for fabricating a surface of a net material by performing an oxidation reaction on a surface of a metal mesh material by electrochemical reaction, so that the color of the metal mesh cloth is deepened or blackened, thereby increasing the metal mesh material. For the absorption rate of light, the condition of forming a triangular intercept point in the screen printing portion is further improved.

To achieve the foregoing objects, the present invention provides a method for fabricating a surface of a web material, comprising the steps of: a web step, an atomization step, a coating step, an exposure step, and an imaging step. The step of stretching the net is to stretch and fix a mesh to be atomized on a frame to form a screen, wherein the mesh to be atomized has a conductive material. Conductive part. The atomizing step further includes the steps of: preparing a jig, the jig is a non-conductive material, and the jig has at least one hollow portion corresponding to at least one desired printed area on the screen; preparing one a roller, the roller is composed of a conductive material; the conductive portion of the mesh to be atomized and the roller are electrically connected to a power supply; the conductive portion of the mesh to be atomized and the roller are coated with an electrolysis And, after the power supply roller is energized, the roller is rolled on the jig, so that the roller contacts the mesh to be atomized through at least one hollow portion of the jig, wherein the power supply, the roller, and the electrolyte And the electrically conductive portion of the atomized mesh to be formed forms a loop and forms an electrochemical reaction, thereby atomizing the mesh to be atomized. The coating step is to apply the emulsion to the screen. The exposing step places a negative film having a predetermined pattern between the screen and an ultraviolet light source, and illuminates the screen through the ultraviolet light source to cure the emulsion. Wherein, the predetermined pattern of the negative film corresponds to at least one desired printed area. The developing step is to rinse the screen with fresh water to dissolve the uncured emulsion while forming a plurality of openings in at least one desired print area on the screen.

According to an embodiment of the invention, the mesh to be atomized is a metal mesh or a composite mesh.

According to an embodiment of the invention, the jig is constructed by a Tedron mesh stretched onto a frame by a force stretching.

According to an embodiment of the invention, the roller is coated with a foam soaked through the electrolyte.

According to an embodiment of the invention, a foam layer soaked in the electrolyte is disposed under the mesh to be atomized.

According to an embodiment of the invention, the jig is provided with a plurality of hollow portions corresponding to all desired print areas.

According to an embodiment of the invention, the size of each of the at least one hollowed out portion is slightly larger than the size of at least one desired printed area corresponding thereto

S21‧‧‧ net steps

S22‧‧‧Atomization step

S221~S225‧‧‧Steps

S23‧‧‧ Coating step

S24‧‧‧Exposure step

S25‧‧‧ imaging steps

1‧‧‧Web Edition

11‧‧‧Required print area

3‧‧‧ fixture

31‧‧‧ hollow part

5‧‧‧Roller

7‧‧‧Power supply

91‧‧‧Printed part

92‧‧‧Triangulation point

The first figure is a schematic diagram showing a screen structure formed by a conventional screen making method; the second figure is a flow chart showing a method of fabricating a surface atomization of a net material according to a preferred embodiment of the present invention; A flow chart showing one step of atomization in a method for fabricating a surface of a net material according to a preferred embodiment of the present invention; and a fourth figure showing a method for producing a surface atomization of a net material according to a preferred embodiment of the present invention, A schematic diagram of one of the steps.

The embodiments of the present invention will be described in more detail below with reference to the drawings and the <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt;

The second figure is a flow chart showing a method of fabricating a surface of a mesh material according to a preferred embodiment of the present invention. As shown in the second figure, the method for fabricating the surface of the net material provided by the present invention mainly comprises a net step S21, an atomizing step S22, a coating step S23, an exposure step S24 and an imaging step. S25. Hereinafter, each step will be described in order.

The step of step S21 is to stretch and fix a web to be atomized on a frame with a predetermined tension to form a screen. Since the method provided by the present invention aims to improve the reflection of ultraviolet light by the metal material mesh in the screen, which causes a triangular cut point of the screen, the atomized mesh can be completely composed of metal mesh. The metal mesh or a composite mesh composed of a metal and a non-metal mesh. In addition, since the present invention uses the means of electrochemical reaction to perform the atomization step, the metal mesh used in the mesh to be atomized needs to be a metal material of a conductive material. In a preferred embodiment of the invention, the metal mesh material is a steel wire.

The third figure is a flow chart showing the atomization step S22 in the method for fabricating the surface of the mesh material according to the preferred embodiment of the present invention. The fourth figure is a schematic view showing one operation of the atomization step S22 in the method for fabricating the surface of the mesh material according to the preferred embodiment of the present invention. As shown in the third and fourth figures, the atomizing step S22 further includes steps S221 to S225. First, in step S221, a jig 3 is prepared first. The jig 3 needs to be composed of a non-conductive material, and the jig 3 has a hollow portion 31 corresponding to the desired printed area 11 on the screen 1. In a preferred embodiment of the invention, the jig 3 is constructed by a Tedron mesh stretched onto a frame by a force stretching. In step S222, a roller 5 made of a conductive material is prepared. Next, in step S223, the roller 5 and the conductive portion of the mesh to be atomized are electrically connected to a power supply 7, as shown in the fourth figure. In step S224, an electrolyte is applied to the conductive portion of the mesh to be atomized and the roller. According to a preferred embodiment of the present invention, in order to make the effect of the electrochemical reaction better, the roller 5 may be coated with a foam soaked in the electrolyte (not shown), and/or the mesh to be atomized may be placed. In dip Soaked in the foam layer of the electrolyte (not shown). Finally, in step S225, the roller 5 is energized through the power supply 7, and the roller 5 is rolled on the jig 3, so that the roller 5 is brought into contact with the mesh to be atomized by the hollow portion 31 on the jig 3. Here, the power supply 7 can be an alternating current power source. In this way, a loop can be formed in the electrically conductive portion of the power supply 7, the roller 5, the electrolyte and the mesh to be atomized to perform an oxidation-reduction reaction on the mesh through an electrochemical reaction, thereby atomizing the mist. Net cloth.

Here, it is worth mentioning that the atomization step S22 can be different according to The jig 3 is carried out once or in multiple times. In one embodiment, the jig 3 prepared in step S221 is provided with a plurality of hollow portions 31 corresponding to all the desired print regions 11. In the embodiment in which the atomization step S22 is divided into a plurality of times, a plurality of jigs 3 may be prepared in step S221, and each of the jigs 3 is provided with a hollow portion 31 corresponding to a different desired print region 11 . Further, in accordance with a preferred embodiment of the present invention, each of the hollow portions 31 is slightly larger in size than the desired print area 11 corresponding thereto.

As shown in the first figure, after the atomization step S22, the subsequent execution is performed. In the coating step S23, the emulsion is applied to the screen 1. Next, an exposure step S24 is performed, a negative film having a predetermined pattern is placed between the screen and an ultraviolet light source, and the screen is irradiated through the ultraviolet light source to cure the emulsion, wherein the predetermined pattern of the negative film corresponds to The desired print area. Finally, a developing step S25 is performed to rinse the screen with fresh water to dissolve the uncured emulsion while forming a plurality of openings in at least one desired print area on the screen, the openings being the printed portions.

After the nebulized screen 1 is atomized through the atomizing step S22, the surface of the net material is Corrosion, thus forming a plurality of unevenly shaped recesses on the surface of the mesh material. The plurality of recesses formed on the surface of the metal mesh material reduce the reflectance of the metal mesh material to light, thereby reducing the situation in which the ultraviolet light is reflected from the non-printed area to the printed area by the metal mesh during the exposure step S24. In this way, the situation in which the triangular intercept point is formed in the screen printing portion can be improved. In addition, the color of the metal mesh after the redox treatment will become darker or darker, thereby increasing the light absorption rate of the mesh material. The metal mesh having a deeper color also reduces the occurrence of the reflection of the ultraviolet light in the exposure step S24, thereby further improving the condition in which the triangular cut point is formed in the screen printing portion.

The above description of the embodiments of the present invention and the application examples thereof are not intended to limit the scope of the present invention, and any improvement and variation that can be accomplished by those skilled in the art based on the contents of the present invention should be considered. It is intended to be included within the scope of the appended claims. Any equivalent structure that is achieved by the use of the contents of the present invention and the accompanying drawings, whether directly or indirectly applied to the art or other related art, is considered to be within the scope of the present invention.

S21‧‧‧ net steps

S22‧‧‧Atomization step

S23‧‧‧ Coating step

S24‧‧‧Exposure step

S25‧‧‧ imaging steps

Claims (7)

A method for fabricating a surface of a net material, comprising the steps of: stretching a web to be atomized at a predetermined tension and fixing on a frame to form a screen, wherein the fog is formed The netting cloth has a conductive portion composed of a conductive material; an atomizing step comprises the steps of: preparing a jig, the jig is a non-conductive material, and the jig has the same on the screen At least one hollow portion corresponding to the desired printed area; preparing a roller, the roller is composed of a conductive material; the conductive portion of the mesh to be atomized and the roller and a power supply are electrically a conductive connection; the conductive portion of the mesh to be atomized and the roller are coated with an electrolyte; and after the power supply is energized by the roller, the roller is rolled on the jig, so that the roller passes the treatment The at least one hollow portion of the device is in contact with the mesh to be atomized, wherein the power supply, the roller, the electrolyte, and the electrically conductive portion of the mesh to be atomized form a loop and form an electrochemical Reaction, by means of fog The coating to be atomized; a coating step of applying an emulsion to the screen; and an exposure step of placing a film having a predetermined pattern between the screen and an ultraviolet light source, and transmitting The ultraviolet light source illuminates the net a plate for curing the emulsion, wherein the predetermined pattern of the backsheet corresponds to the at least one desired print area; and a developing step of rinsing the screen with water to dissolve the uncured emulsion while The at least one desired printed area on the screen forms a plurality of openings. The method for fabricating a surface of a net material according to the first aspect of the invention, wherein the mesh to be atomized is a metal mesh or a composite mesh. The method for fabricating a surface of a net material according to the first aspect of the invention, wherein the jig is formed by a Tedron mesh stretched by a force and fixed on a frame. The method for producing a surface of a net material according to claim 1, wherein the roller is coated with a foam soaked in the electrolyte. The method for fabricating a surface of a net material according to claim 1, wherein a foam layer soaked in the electrolyte is disposed under the mesh to be atomized. The method of fabricating a surface of a net material according to claim 1, wherein the jig is provided with a plurality of the hollowed portions corresponding to all of the desired printed areas. The method for fabricating a surface of a web according to claim 1 or 6, wherein each of the at least one hollow portion is slightly larger in size than the at least one desired print region corresponding thereto The size.