JP6560109B2 - Suspended metal mask for printing and manufacturing method thereof - Google Patents

Description

  The present invention relates to a suspend metal mask for printing and a method for manufacturing the same.

  Conventionally, a conductive stainless steel mesh stretched in a tensioned state with respect to an enclosure frame is superposed and adhered to one side of a mask substrate having a large number of openings patterned in a desired printing pattern by electroforming. There is known a mesh-integrated metal mask that is integrally bonded to each other (see, for example, Patent Document 1). In this mesh-integrated metal mask, since the surface of the stainless steel electroforming mother mold is used as it is, the electrodeposition layer (mask substrate) formed on the surface of the electroforming mother mold is close to a mirror surface without roughening. As a result, the mask substrate comes into close contact with the printing surface and the separation of the plate becomes worse.

As another prior art, a plate frame, a mesh having an outer periphery bonded and fixed to the inside of the plate frame, and having a conductive metal mesh at least in the center, and a metal mesh are closely polymerized. The base metal is integrally bonded by bonding plating and provided with a base metal (electrodeposition layer) provided with a printing opening pattern. The base metal forms a printing opening pattern in the central portion and also has a printed surface (substrate). A suspend metal mask is known in which a large number of air venting convex portions for releasing air during printing are formed on the surface side (see, for example, Patent Document 2).
Further, as another conventional technique, electropolishing is performed on an electroforming mother mold used for producing a metal mask by using an electrolytic polishing liquid having a specific gravity smaller than 1.7 of the specific gravity of an electrolytic polishing liquid normally used in an electrolytic polishing process. A suspended metal mask having a roughened surface is known (see, for example, claim 3 of Patent Document 3).

JP-A-8-183151 JP 2014-133891 A JP 2014-133375 A

  In the other conventional suspend metal masks, the entire surface of the SUS base material for base metal is roughened by electrolytic polishing, chemical polishing, blasting, or the like to form a minute concave shape on the surface of the SUS base material. By using the base metal side of the base metal formed on the surface of the SUS base as the side in contact with the printed body, a large number of minute protrusions are formed on the entire surface in contact with the printed body. Scratching can be prevented by bleeding air during printing. However, for example, in the case of a base metal used for a wiring pattern for a touch panel, the desired printed pattern shape is, for example, a plurality of ultrafine wires having a width of about 50 μm or less, and the interval between the ultrafine wires is about 50 μm or less. Since the end portions of the fine wires are connected to the terminal thick wires, the fine wires and the terminal thick wires are mixed. In such a case, since a large number of minute convex portions by roughening are formed on the entire base metal print pattern, there arises a problem that bleeding is likely to occur in the fine line portion of the print pattern during printing. In order to solve this problem, the inventor considered that the surface to be printed opposite to the base metal bonding plating surface is a blasted surface subjected to roughening, but at least in a region where a desired opening pattern for printing is formed. A proposal has been made as an improved plan in which a portion where a plurality of ultrafine wires are arranged in parallel at equal intervals has a surface close to a mirror surface that is not roughened. However, in the case where the portion in which a plurality of fine fine lines, which are the formation region of the printing opening pattern, are arranged in parallel at equal intervals is a surface close to a mirror surface that is not roughened, the formation region of the printing opening pattern Depending on the state of formation of the ultrafine wire in the case, it may not be possible to prevent the occurrence of blurring.

  The present invention has been made to solve the above-described problems, and provides a suspend metal mask for printing that does not cause bleeding in a fine line portion of a print pattern during printing, and a method for manufacturing the same. .

In the suspending metal mask for printing according to the present invention, the plate frame, a mesh having an electrically conductive metal mesh in at least the central portion of which the outer periphery is stretched inside the plate frame, and the metal mesh are in close contact with each other A suspending metal mask for screen printing comprising a base metal bonded in a state and provided with a printing opening pattern, wherein the base metal includes a printing opening pattern forming region portion on which the printing opening pattern is formed; And a printing aperture pattern non-formation region portion in which the printing aperture pattern is not formed, and a part of the printing aperture pattern formation region portion in which the printing aperture pattern is formed has a plurality of ultrafine widths of 200 μm or less This is the first blasted surface that includes portions where fine lines are arranged in parallel at equal intervals, and a large number of convex convex curved ultra-small convex portions are formed. The first balance and printing opening pattern non-opening area portion of the blast printing opening pattern forming region portion printing opening pattern other than the work surface is formed, very large convex curved micro than the convex portion of the fine It is the 2nd blast processing surface in which many convex parts were formed.

  In addition, a plurality of ultrafine wires having a width of 15 to 200 μm or less are arranged in parallel so that an interval between the ultrafine wires is 15 to 200 μm or less.

  In the method for manufacturing a suspending metal mask for printing according to the present invention, the first blast in which a number of very small concave portions having a concave curved surface are formed by subjecting the entire surface of the SUS material to a first blasting process. By forming a processed surface, forming a blind pattern resist film on the surface of the SUS material, and performing a second blasting process from the upper surface of the SUS material on which the blind pattern resist film is formed, A step of forming a second blasted surface in which a large number of minute recesses larger than very minute recesses are formed on the surface of an unprotected SUS material to produce an SUS base material subjected to two types of blasting In addition, using a SUS base material that has been subjected to two types of blasting, a plurality of ultrafine fine lines are formed on the first blasting surface on which a large number of concave concave-shaped concave portions are formed. By forming a pattern resist film for forming an opening pattern for printing including portions arranged in parallel at equal intervals, and performing plating from the upper surface of the SUS base material subjected to two types of blasting, The surface to be printed opposite to the base metal bonding plating surface is a second blasted surface on which a large number of large convex portions corresponding to the large minute concave portions are formed, and at least a plurality of printing opening pattern forming regions are formed. The portion in which the ultrafine wires are arranged in parallel at equal intervals is a base that is a first blasted surface on which a large number of convex microscopic convex portions smaller than the micro convex portions corresponding to the micro micro concave portions are formed. And a step of producing a metal.

  In addition, the first blasting surface of the SUS base material that has been subjected to two types of blasting is formed with a large number of concave concave-shaped concave portions made of small and spherical glass beads, and the second surface of the SUS base material. The blasted surface has a large number of concave concave surfaces that are larger than the extremely small concave portions formed by large and spherical glass beads, and the first blasted surface of the base metal is small and spherical glass. A large number of very small convex portions of convex curved surface formed by beads are formed, and the second blasted surface of the base metal has a very small convex curved surface shape that is larger than the extremely small convex portion of large and spherical glass beads. A large number of convex portions are formed.

Further, in the printing metal mask according to the present invention, a metal provided with a printing opening pattern forming region portion where the printing opening pattern is formed and a printing opening pattern non-forming region portion where the printing opening pattern is not formed. In the mask, a part of the printing opening pattern forming region where the printing opening pattern is formed includes a portion in which a plurality of ultrafine lines having a width of 200 μm or less are arranged in parallel at equal intervals, and has a convex curved surface shape. The remaining part of the printing opening pattern forming region portion and the printing opening pattern in which the printing blasting pattern other than the first blasting surface is formed as a first blasting surface on which a large number of extremely small convex portions are formed The non-opening region portion is a second blasted surface on which a large number of convex convex portions that are larger than the extremely minute convex portions are formed.

  According to this invention, the printed pattern shape is a plurality of (for example, 10) ultrafine wires having a width of about 15 to 200 μm or less, for example, and the interval between the ultrafine wires is about 15 to 200 μm or less in parallel. Even when a line-up is required, the surface of the base metal 5 in the formation region corresponding to a plurality of ultrafine wires having a width of about 15 to 200 μm or less is formed with a large number of extremely convex portions having a convex curve shape. Since the first blasted surface is used, printing unevenness does not occur when printing as a metal mask, and there is an effect that clean printing is achieved.

It is a perspective view which isolate | separates and shows each component required for the manufacturing method of the suspending metal mask for printing which is fundamental in Embodiment 1 of this invention. It is sectional drawing which shows the joining plating process of the manufacturing method of the suspend metal mask for printing used as the foundation in Embodiment 1 of this invention. It is sectional drawing which shows the state which the junction plating of the manufacturing method of the suspending metal mask for printing used as the foundation in Embodiment 1 of this invention was complete | finished. It is sectional drawing which shows the state which cancelled | released the set from the joining state of the manufacturing method of the suspending metal mask for printing which is fundamental in Embodiment 1 of this invention. It is sectional drawing which shows the state which has peeled the SUS base material from the base metal of the manufacturing method of the suspending metal mask for printing used as the foundation in Embodiment 1 of this invention. It is sectional drawing which shows the state before peeling the opening resist of the base metal of the manufacturing method of the suspend metal mask for printing used in Embodiment 1 of this invention. It is sectional drawing which shows the state which peeled the opening resist of the base metal of the manufacturing method of the suspend metal mask for printing used in Embodiment 1 of this invention. It is sectional drawing which shows the preparation process of the SUS base material used for the manufacturing method of the suspend metal mask for printing in Embodiment 1 of this invention. It is sectional drawing which expands and shows a part of SUS base material in which the 1st blast process was given. It is sectional drawing which expands and shows a part of SUS base material to which the 2nd blast process was given. It is a principal part top view which shows the surface state of the SUS base material used for the manufacturing method of the suspend metal mask for printing in Embodiment 1 of this invention. It is sectional drawing which shows the production process of the base metal used for the manufacturing method of the suspend metal mask for printing in Embodiment 1 of this invention. It is a principal part top view which shows the suspend metal mask for printing in Embodiment 1 of this invention. It is a top view which expands and shows a part of FIG. It is sectional drawing which expands and shows the 1st blasting surface part of the base metal of FIG. It is sectional drawing which expands and shows the 2nd blasting surface part of the base metal of FIG.

In order to explain the present invention in more detail, it will be described with reference to the accompanying drawings. In addition, in each figure, the same code | symbol is attached | subjected to the part which is the same or it corresponds, The duplication description is simplified or abbreviate | omitted suitably.

Embodiment 1.
FIG. 1 is a perspective view separately showing each component necessary for a printing suspend metal mask manufacturing method which is the basic in Embodiment 1 of the present invention, and FIGS. 2 to 7 are Embodiment 1 of the present invention. Sectional drawing which shows the manufacturing process of the manufacturing method of the suspending metal mask for printing used as a base, FIG. 8 is a cross section which shows the manufacturing process of the SUS base material used for the manufacturing method of the suspending metal mask for printing in Embodiment 1 of this invention. FIG. 9 is an enlarged sectional view showing a part of the SUS base material subjected to the first blasting process, and FIG. 10 is an enlarged part of the SUS base material subjected to the second blasting process. FIG. 11 is a main part plan view showing a surface state of a SUS base material used in the method for manufacturing a suspending metal mask for printing in the first embodiment of the present invention, and FIG. 12 is a sectional view in the first embodiment of the present invention. mark FIG. 13 is a main part plan view showing a printing suspend metal mask according to Embodiment 1 of the present invention, and FIG. 14 is a plan view of FIG. 15 is an enlarged plan view, FIG. 15 is an enlarged sectional view of the first blasting surface portion of the base metal in FIG. 13, and FIG. 16 is a second blasting surface portion of the base metal in FIG. It is sectional drawing expanded and shown.

  As shown in FIG. 1, the constituent elements necessary for the method of manufacturing a suspending metal mask for printing, which is the basis of the present invention, are a metal mesh 1 made of a stainless mesh or nickel mesh having electrical conductivity provided in the center portion, and This is provided on a rectangular metal plate frame 3 in which a combination mesh composed of a Tetron mesh 2 provided on the outside of the metal mesh 1 is stretched on the inside, and a SUS base material 4 for base metal, and has a printing opening. A base metal 5 made of Ni having a resist 5a for forming an opening pattern for printing at a central portion where a pattern is formed, a quadrilateral joining auxiliary metal plate frame 7 in which a tetron mesh 6 is stretched, and this It consists of a sponge 8 interposed between a tetron mesh 6 of a metal plate frame 7 for joining assistance and a SUS base material 4 for base metal. . The mesh stretched on the rectangular metal plate frame 3 is preferably a combination mesh composed of a metal mesh 1 at the center and an outer tetron mesh 2 but is not a combination mesh and has electrical conductivity. A single piece of metal mesh 1 may be used. The base metal 5 has a printing opening pattern 5b formed at a desired location.

In the bonding plating step of the printing suspend metal mask manufacturing method which is the basis of the present invention, as shown in FIG. 2, a rectangular metal plate frame 3 is arranged on the right side, and a rectangular bonding auxiliary metal on the left side. A plate making frame 7 is arranged. Then, the base metal 5 is arranged so as to be superposed with the metal mesh 1 of the metal plate frame 3, and the metal plate frame 3 and the joining auxiliary metal plate frame 7 are superposed with each other and fastened with an adhesive tape 9 or the like. Then, the base metal 5 and the metal mesh 1 are set in close contact with each other through the base metal SUS base material 4 and the sponge 8. The base metal 5 is connected to the cathode 10 while being electrically connected and accommodated in a plating tank 11 containing a nickel sulfamate bath, and nickel 12 is connected to the anode 13. And metal mesh 1 are bonded and bonded together. This bonding plating amount is usually 2 μm on one side, and the same plating method as electroforming plating is used. The positive / cathode current density is about 0.1 to 2.0 A / dm ² , preferably 0.5 to 1.0 A / dm ² . Disconnection of the mesh 1 can be prevented.

  Next, when the bonding plating step is completed, the one set in the above-mentioned close contact state is taken out from the plating tank 11 (see FIG. 3), and the adhesive tape 9 is removed and the one set in the close contact state is released (see FIG. 4). Next, the base metal SUS base material 4 is peeled from the base metal 5 (see FIGS. 5 and 6). Thereafter, the opening pattern for printing is removed by peeling the resist 5a for forming the opening pattern for printing from the base metal 5 of the metal plate frame 3 in which the joint between the base metal 5 and the metal mesh 1 is integrally joined by plating. 5b is formed (see FIG. 7). Note that the printing opening pattern forming resist 5a and the printing opening pattern 5b of the base metal 5 are simplified and show only images, and are different from actual ones.

  In this basic suspend metal mask for printing, the entire surface of the SUS base material 4 for the base metal is formed on the surface of the SUS base material by subjecting the entire surface of the SUS base material 4 to roughening with, for example, bead blasting instead of electrolytic polishing or chemical polishing. Since a large number of minute protrusions are formed on the entire surface of the electrodeposited layer (base metal) in contact with the printed body, bleed can be prevented by bleeding air during printing. In the case of a metal mask used for a wiring pattern for a touch panel, the desired printed pattern shape is, for example, a plurality of ultrafine wires having a width of about 50 μm or less, and the interval between the ultrafine wires is about 50 μm or less in parallel. The tips of the fine wires are connected to the terminal thick wires, and the fine wires and the terminal thick wires are mixed. In such a case, since a large number of minute convex portions are formed around the printed pattern portion of the metal mask by roughening, there is a problem that bleeding is likely to occur in the fine line portion of the printed pattern during printing. . In addition, as in the above-described improvement, a portion in which a plurality of fine fine lines, which are the formation areas of the printing opening pattern, are arranged in parallel at equal intervals is a surface close to a mirror surface that is not roughened. Even in such a case, the occurrence of blurring may not be prevented depending on the state of formation of the ultrathin lines in the formation region of the printing opening pattern.

Next, a manufacturing process of a SUS base material subjected to two types of blasting and a state of the surface of the SUS base material used in the method for manufacturing a suspending metal mask for printing according to the present invention that solves these problems are shown in FIGS. 10 will be described.
A SUS material 41 with a positioning recognition mark (not shown) is prepared (FIG. 8A). First, relatively small particles (about 20 to 80 μm) of spherical glass beads are formed on the entire surface of the SUS material 41 from the upper surface. A first blasting process is performed (FIG. 8B). As a result, the entire surface of the SUS material 41 is formed by a relatively small spherical glass bead, as shown in FIG. It becomes the blast processing surface 4a. As for the size of this very minute recess, the depth is RA 25 μm or less and the diameter is 5 to 80 μm. Next, the dry film 42 is apply | coated to the whole surface of the SUS material 41 (FIG.8 (c)). Then, the printed pattern film 43 is brought into close contact with the dry film 42 to perform exposure, development, and the like (FIG. 8D), and the pattern resist film 42a is formed only on the surface of the SUS material 41, for example, about 1000 μm (1 mm) wide. Is formed as a blindfold (FIG. 8E). The formation region where the pattern resist film 42a having a width of about 1000 μm (1 mm) is formed can be accurately set by aligning with a positioning recognition mark, and a metal mask used for a wiring pattern for a touch panel. In this case, the desired printed pattern shape is, for example, a plurality of (for example, 10) ultrafine wires having a width of about 50 μm or less, and arranged in parallel so that the interval between the ultrafine wires is about 50 μm or less, The tip of the extra fine wire corresponds to the one connected to the thick terminal wire, which is, for example, corrected by about +100 μm. Then, a second blasting process is performed with relatively large (100 to 1000 μm) spherical glass beads from the upper surface of the SUS material 41 on which the blind pattern resist film 42a having a width of about 1000 μm (1 mm) is formed (FIG. 8 (f)). As a result, as shown in FIG. 10, a concave curved surface consisting of a part of a sphere is formed on a portion of the entire surface of the SUS material 41 that is not covered with a relatively large spherical glass bead, as shown in FIG. The second blasted surface 4b is formed with a large number of minute recesses larger than the extremely minute recesses. The size of this large minute recess is RA 50 μm or less in depth and 85 to 250 μm in diameter. As shown in FIG. 11, the surface state of the SUS base material 4 of the present invention obtained after completion of the first blasting process and the second blasting process using the two types of spherical glass beads is about 1000 μm (1 mm) in width. The surface of the portion that is not protected by the blind pattern resist film 42a is the second blasted surface 4b in which a large number of concave concave surfaces made of relatively large spherical glass beads are formed. The first blasting process in which the surface of the formation region protected by the pattern resist film 42a having a blindfold of about 1000 μm (1 mm) is formed with a large number of concave concave surface-shaped microscopic concave portions made of relatively small spherical glass beads. It becomes the surface 4a. That is, the SUS base material 4 subjected to two types of blasting is produced. In addition, on the first blasting surface 4a to which relatively small spherical glass beads are applied, as shown in FIG. 9, a large number of concave concave curved ultrafine concave portions are formed. It will be. In addition, as shown in FIG. 10, a large number of small concave portions having a concave curved surface formed of a part of a spherical shape are formed on the second blasting surface 4b to which relatively large spherical glass beads are applied. It will be. In this way, since the concave curved surface is a very small concave portion or a small concave portion formed of a spherical part, the base metal 5 manufactured in a subsequent manufacturing process can be easily peeled off from the SUS base material 4. If the first and second blasted surfaces 4a, 4b are not concave concave micro-recesses or micro-recesses but have a vertical wall surface or a narrow upper part, the base metal 5 is peeled off. It becomes difficult. In addition, although the example using the spherical glass bead was demonstrated as two types of blasting, in the case of a glass bead, since it will be crushed by an impact, it cannot be reused. In order to enable reuse, for example, metal spheres can be used.

Next, a process for producing a base metal used in the method for producing a suspending metal mask for printing according to the present invention that solves the problem will be described with reference to FIG.
First, the SUS base material 4 subjected to the two types of blast processing obtained in the SUS base material manufacturing step is prepared so that the first blast processing surface 4a and the second blast processing surface 4b are on top ( 12A), a dry film 52 is applied to the upper surface of the roughened SUS base material 4 that has been subjected to two types of blasting (FIG. 12B). Next, the printed pattern film 53 is brought into intimate contact with the dry film 52 to perform exposure, development, and the like (FIG. 12C). The width of the center of the upper surface of the SUS base material 4 subjected to two types of blasting is about 1000 μm. The first blasting surface 4a in the range of (1 mm) is a plurality of (for example, 10) ultrafine wires having a width of about 50 μm or less, for example, and is parallel so that the interval between the ultrafine wires is about 50 μm or less. A pattern resist film 52a arranged in a row is formed (FIG. 12D). A positioning recognition mark is used to accurately form the pattern resist film 52a in a range of about 1000 μm (1 mm) in width. Then, the base metal 5 is manufactured by performing plating from the upper surface of the SUS base material 4 on which the two types of blast processing on which the pattern resist film 52a is formed (FIG. 12E). The surface state of the base metal 5 of the present invention obtained after completion of the plating process is the second blasting process in which the relatively large spherical glass beads of the SUS base material 4 subjected to two types of blasting processes are applied. The surface corresponding to the surface 4b becomes a symmetrical reverse relationship and becomes the second blasted surface 5d of the base metal 5. On the other hand, it corresponds to the first blasting surface 4a provided with relatively small spherical glass beads having a width of about 1000 μm (1 mm) in the center of the upper surface of the SUS base material 4 subjected to two types of blasting. The surface to be turned becomes a symmetrical reverse relationship and becomes the first blasted surface 5 c of the base metal 5. Note that, as shown in FIG. 15, a number of extremely small convex portions having a convex curved surface formed of a part of a spherical shape are formed on the first blasted surface 5c of the base metal 5. Further, as shown in FIG. 16, a large number of large convex portions having a convex curved surface formed of a spherical part are formed on the second blasted surface 5 d of the base metal 5. In this way, since it is a very small convex part or a minute convex part of a convex curved surface consisting of a part of a sphere, it will be in smooth contact with the printing object (printed body), so that the printing object will be damaged. There is an advantage that is difficult to stick.

Next, the structure of the main part of the suspending metal mask for printing according to the present invention will be described with reference to FIGS. Consider a case where a suspend metal mask for printing is produced using a SUS base material 4 that has been subjected to two types of blasting and obtained after completion of blasting with two types of spherical glass beads. For example, in the case of the base metal 5 of the suspend metal mask used for the wiring pattern for the touch panel, a part of the desired print pattern shape is, for example, a plurality of (for example, 10) ultrafine wires having a width of about 50 μm or less. They are arranged in parallel so that the distance between the thin wires is about 50 μm or less, and the tip of the ultra fine wire is connected to the thick wire for the terminal, so that the ultra fine wire and the thick wire for the terminal are mixed. . The surface of the base metal 5 in the formation region corresponding to a plurality of (10) ultrafine wires having a width of about 50 μm or less corresponds to the first blasted surface 4a provided with relatively small spherical glass beads, The first blasted surface 5c is formed with a number of extremely small convex portions having a convex curved surface formed of a part of a sphere and having a reverse relationship of symmetry. On the other hand, the surface of the base metal 5 other than the formation region corresponding to the ultrafine wire, that is, the portion other than the first blasting surface 5c (including the terminal thick line) is provided with relatively large spherical glass beads. Corresponding to the second blasting surface 4b, it becomes a second blasting surface 5d in which a large number of small convex portions having a convex curved surface formed of a part of a sphere are formed in a symmetric and reverse relationship. 13 to 14, since the metal mesh 1 is joined to the back side of the base metal 5 by plating, a part of the metal mesh 1 on the back side can be seen through the printed pattern shape of the base metal 5.
Thereby, in the case of the base metal 5 of the suspend metal mask used for the wiring pattern for the touch panel, a part of the desired print pattern shape is, for example, a plurality of (for example, 10) ultrafine wires having a width of about 50 μm or less. Even when a parallel arrangement is required so that the distance between the fine wires is about 50 μm or less, the base metal 5 in the formation region corresponding to the plurality of fine wires with a width of about 50 μm or less is required. The surface has a reverse relationship corresponding to a symmetric surface corresponding to the surface of a relatively small spherical glass bead, and a plurality of very small convex portions having a convex curved surface formed of a part of a spherical shape are formed. Therefore, bleeding does not occur in the fine line portion of the print pattern during printing.
A part of the desired printed pattern shape is, for example, a plurality of ultrafine wires having a width of about 50 μm or less and arranged in parallel so that the interval between the ultrafine wires is about 50 μm or less. The number, width, and interval of the extra fine wires are design values and can be arbitrarily changed. For example, the number can be 20 to 30 and the width and interval can be about 15 μm to 200 μm.
In addition, although the SUS base material 4 and the base metal 5 that have been subjected to two types of blasting have been described, three types and four types of blasting that have different sizes may be performed.

Embodiment 2.
In the first embodiment, a part of the desired print pattern shape is, for example, a plurality of (for example, 10) ultrafine wires having a width of about 50 μm or less, and the interval between the ultrafine wires is about 50 μm or less. Although arranged in parallel and all the fine wires have the same width, in Embodiment 2, one of the fine wires arranged near a large opening is arranged. The width of (the fine line disposed at the uppermost end in FIG. 12) is set to be twice or more the width of the other fine line disposed below the uppermost end. In this case, the traveling direction of the squeegee moves from the bottom to the top. There is a problem of bleeding in the half of the one thin wire (the fine wire disposed at the uppermost end in FIG. 12) located near the large opening, which is half the lower side (the entrance side in the squeegee traveling direction). For this reason, the first blasted surface 5c is formed with a large number of very small convex portions having a convex curved surface formed of a part of a spherical shape. The ½ part of the upper fine line (extra fine line arranged at the uppermost end) (exit side in the squeegee traveling direction) is less likely to cause bleeding, so the convex curved surface formed of a part of a spherical shape is large. The second blasted surface 5d is formed with a large number of minute convex portions.
Also in the second embodiment, as in the first embodiment, it is possible to obtain an effect that bleeding does not occur in the ultrathin line portion of the print pattern during printing.

Embodiment 3.
In the first and second embodiments, the manufacturing process of the SUS base material subjected to two types of blasting used in the manufacturing method of the suspending metal mask for printing, and the base metal used in the manufacturing method of the suspending metal mask for printing are also used. However, the present invention is not limited to the suspending metal mask for printing, the portion related to printing on which the opening pattern for printing is formed, and the opening for printing. In a metal mask provided with a portion not related to printing in which a pattern is not formed, some of the portions related to printing in which a printing opening pattern is formed are parallel to each other with a plurality of ultrafine wires arranged at equal intervals. A first blasting surface including a plurality of very small convex portions having a convex curved surface shape including arranged portions, and other than the first blasting surface Among the portions related to printing on which the opening pattern for printing is formed and the portions not related to printing, the second portion in which a large number of convex convex portions larger than the extremely small convex portions are formed. The present invention can also be applied to a screen printing metal mask having a blasted surface.

DESCRIPTION OF SYMBOLS 1 Metal mesh 2 Tetron mesh 3 Metal plate frame 4 SUS base material (SUS base material for base metal) to which two types of blasting were given
4a 1st blasting surface 4b 2nd blasting surface 5 Base metal 5a Resist for forming opening pattern for printing 5b Opening pattern for printing 5c 1st blasting surface 5d 2nd blasting surface 6 Tetron mesh 7 Joining assistance Metal plate frame 8 Sponge 9 Adhesive tape 10 Cathode 11 Plating tank 12 Nickel 13 Anode 41 SUS material 42, 52 Dry film 42a Blind pattern resist film 52a Pattern resist film 43, 53 Print pattern film

Claims (6)

Plate frame,
A mesh having an electrically conductive metal mesh in at least the central part of which the outer periphery is stretched inside the plate frame; and
A suspending metal mask for screen printing comprising: a base metal bonded in close contact with the metal mesh and provided with a printing opening pattern;
The base metal includes a printing opening pattern forming region portion where the printing opening pattern is formed, and a printing opening pattern non-forming region portion where the printing opening pattern is not formed ,
A part of the printing opening pattern forming region where the printing opening pattern is formed includes a part in which a plurality of fine fine lines having a width of 200 μm or less are arranged in parallel at equal intervals, and is a convex curved micro A first blasted surface formed with a large number of small convex portions;
The remaining portion of the printing opening pattern forming region portion where the printing opening pattern other than the first blasting surface is formed and the printing opening pattern non-opening region portion are larger than the extremely small convex portion. A suspending metal mask for screen printing, characterized in that it is a second blasted surface on which a large number of curved convex portions are formed.   2. The suspending metal mask for screen printing according to claim 1, wherein a plurality of ultrafine wires having a width of 15 to 200 [mu] m or less are arranged in parallel so that a distance between the ultrafine wires is 15 to 200 [mu] m or less. Plate frame,
A mesh having an electrically conductive metal mesh in at least the central part of which the outer periphery is stretched inside the plate frame; and
A suspending metal mask for screen printing comprising: a base metal bonded in close contact with the metal mesh and provided with a printing opening pattern;
The base metal includes a printing opening pattern forming region portion where the printing opening pattern is formed, and a printing opening pattern non-forming region portion where the printing opening pattern is not formed ,
A part of the printing opening pattern forming region where the printing opening pattern is formed includes a part in which a plurality of fine fine lines having a width of 200 μm or less are arranged in parallel at equal intervals, and is a convex curved micro A first blasted surface formed with a large number of small convex portions;
The remaining portion of the printing opening pattern forming region portion where the printing opening pattern other than the first blasting surface is formed and the printing opening pattern non-opening region portion are larger than the extremely small convex portion. A method for producing a suspending metal mask for screen printing, which is a second blasted surface formed with a large number of curved convex portions,
A first blasting process is performed on the entire surface of the SUS material to form a first blasting surface on which a large number of concave concave curved ultrafine recesses are formed, and a pattern resist film that is blindfolded on the surface of the SUS material And performing a second blasting process from the upper surface of the SUS material on which the blind pattern resist film is formed, so that the surface of the SUS material not protected by the blind pattern resist film is formed from Forming a second blasted surface on which a large number of micro-recesses are formed to produce a SUS base material subjected to two types of blasting;
Using the SUS base material that has been subjected to the two types of blasting, a plurality of ultrafine wires are arranged in parallel at equal intervals on the first blasting surface on which a large number of concave concave curved surfaces are formed. Forming a pattern resist film for forming a printing opening pattern including a portion, and performing plating from the upper surface of the SUS base material subjected to two types of blasting, thereby the joint plating surface of the base metal The surface to be printed opposite is a second blasted surface on which a large number of large micro-projections corresponding to the large micro-recesses are formed, and at least a plurality of ultrafine wires that are regions for forming the printing opening pattern are formed. The portions arranged in parallel at equal intervals are the first blasted surface on which a large number of extremely small convex portions having convex curved surfaces smaller than the small convex portions corresponding to the extremely small concave portions are formed. And a step of preparing a Sumetaru,
A method for producing a suspending metal mask for screen printing, comprising: The first blasting surface of the SUS base material that has been subjected to two types of blasting is formed with a large number of concave concave-shaped concave portions made of small and spherical glass beads, and the second blasting of the SUS base material. The processed surface is formed with a large number of concave concave surfaces that are larger than the above-mentioned extremely small concave portions made of large and spherical glass beads,
The first blasted surface of the base metal has a large number of very small convex portions with convex curved surfaces formed by small and spherical glass beads, and the second blasted surface of the base metal is formed by large and spherical glass beads. 4. The method for producing a suspending metal mask for screen printing according to claim 3 , wherein a number of extremely minute convex portions having a convex curved surface larger than the extremely minute convex portions are formed. Microfine fine lines of the following plurality of width 15 to 200 m, according to claim 3 or screen printing of claim 4 mounting, characterized in that arranged in parallel so that the distance between the ultrafine fine wire cross is less than the width 15 to 200 m Suspended metal mask manufacturing method. In a metal mask comprising a printing opening pattern forming region portion where a printing opening pattern is formed and a printing opening pattern non-forming region portion where the printing opening pattern is not formed ,
A part of the printing opening pattern forming region where the printing opening pattern is formed includes a part in which a plurality of fine fine lines having a width of 200 μm or less are arranged in parallel at equal intervals, and is a convex curved micro A first blasted surface with a large number of small protrusions,
The remaining portion of the printing opening pattern forming region portion where the printing opening pattern other than the first blasting surface is formed and the printing opening pattern non-opening region portion are larger than the extremely small convex portion. A metal mask for screen printing, characterized in that the second blasted surface is provided with a large number of curved convex portions.

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