JP2010105207A - Screen printing plate and method for manufacturing the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a screen printing plate, which consists of a metal mask itself and whose outer periphery is attached to a screen frame through a flexible tensionally spanning part, in which the joining between the metal mask and the flexible tensionally spanning part is strong and hard to separate and the separation due to the pressure of printing, human physical pressure, or the like, is hard to develop, and which has less possibility for impairing the printability intrinsic to the metal mask and is excellent in durability, and to provide a method for manufacturing the plate. <P>SOLUTION: The screen printing plate comprises the metal mask 10, the screen frame 14, and the flexible tensionally spanning part 16, and has an adhesive pushed-out region 22, which does not have the flexible tensionally spanning part 16 but the adhesive layer 18, is provided to the center side of the metal mask 10, by cutting the flexible tensionally spanning part 16 at a location lying a slightly outer periphery side from the metal mask center side edge of the adhesive layer 18 and removing the flexible tensionally spanning part 16 on the metal mask center side of a cut part in the joint between the metal mask 10 and the flexible tensionally spanning part 16. The method for manufacturing the screen plate is also provided. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a screen printing plate, which is a plate material for screen printing using a metal mask that enables high-precision pattern printing, and a method for manufacturing the same.

  2. Description of the Related Art Conventionally, for example, screen printing that enables high-precision pattern printing has been adopted when applying and forming solder paste (cream solder), conductor paste, etc. on a printed wiring board for mounting various electronic components and the like. . In particular, when high-precision pattern printing is desired, a screen printing plate using a metal mask is used as a plate material for screen printing (see, for example, Patent Document 1 and Patent Document 2).

Screen printing using a screen printing plate is performed by a doctor, a roller, or the like from one surface (squeegee surface) of the screen printing plate located slightly away from the surface of the substrate to be printed to the other surface (substrate surface). Printing is performed on the surface of the printing body by extruding cream solder, printing ink, and other adhering materials while being pressed against the surface of the printing body. This printing method is suitable when the substrate to be printed is hard and flat.
In general, a surface facing a substrate during printing is referred to as a “printed material surface”, and a surface on the opposite side to which an adhering material is supplied and rubbed with a doctor, a roller, or the like is referred to as a “squeegee surface”.

  A screen printing plate has a metal mask (pattern forming layer) with penetrating pattern holes (patterned holes) bonded to the entire surface of a stretched mesh (紗) (generally “suspended metal mask plate” or In some cases, the mesh pattern does not exist in the through pattern hole and the metal mask itself is formed, and the adhering material is extruded straight through the through pattern hole.

  The former is disadvantageous for obtaining a high-definition pattern because the mesh exists in the pattern-like holes, and the printed pattern is thickened by the thickness of the mesh. In addition, the mesh may affect the print pattern. Therefore, in order to obtain a higher-definition printing pattern, a screen printing plate made of a metal mask itself without mesh holes in the latter through pattern holes is generally more advantageous.

  A screen printing plate made of a metal mask itself with no mesh hole in the through pattern hole is generally used by being fixed to a plate frame. At this time, the metal mask is generally not directly fixed to the plate frame, but is generally attached by attaching a mesh to the outer periphery of the metal mask. By doing so, the printing plate printing surface (metal mask portion) at the time of printing can be provided with mobility, and the separation property from the printing material can be improved.

In FIG. 8, the top view from the squeegee surface side of the screen printing plate of the said aspect is shown. FIG. 9 is an enlarged sectional view taken along the line CC of FIG. However, in FIG. 9, only a left end periphery is expanded and shown among CC cross sections, and the illustration of the right side is abbreviate | omitted.
The metal mask 110 has a desired pattern of holes 112 formed in a predetermined region of a metal plate made of stainless steel or the like. The metal mask 110 is attached via a mesh 116 to a plate frame 114 having an opening larger than its outer shape. At this time, the metal mask 110 and the mesh 116 are generally joined via the adhesive layer 118.

  FIG. 10 is an enlarged cross-sectional view of a region E ′ in FIG. In FIG. 9, the shape of the mesh 116 is illustrated in a simplified manner. However, as illustrated in FIG. 10, the mesh 116 is configured by knitting fibers 116 a and 116 b vertically and horizontally. The adhesive layer 118 is bonded to the surface (squeegee surface or printed material surface) of the metal mask 110 in a state in which the fibers include fibers knitted vertically and horizontally.

  In the present specification, when the adhesion between the mesh and the metal mask is described with reference to the drawings, the structure of the mesh and the adhesive layer is simplified as shown in FIG. The adhesive layer is a thing that forms one layer as a whole while enclosing the mesh.

  An example of a method for producing such a screen printing plate will be described. First, a metal mask 110 having a desired pattern of holes 112 as shown in FIG. 11 is prepared. On the other hand, as shown in FIG. 12, a sheet-like mesh 126 is stretched around the plate frame 114 in advance. FIG. 11 is a plan view of a metal mask used for manufacturing a screen printing plate, and FIG. 12 is a plan view of a mesh in a state of being stretched on a plate frame.

  A mesh 126 is overlaid on the prepared squeegee surface of the metal mask 110. FIG. 13 is a plan view of the state in which the metal mask and the mesh are overlapped as seen from above. Since the mesh 126 is overlaid so as to cover the metal mask 110, the metal mask 110 is present behind the mesh 126 in FIG. 13 and is only seen through the mesh 126. Therefore, in FIG. 13, the metal mask 110 that is difficult to see due to the presence of the mesh 126 is indicated by a broken line.

  Next, a region (a rectangular region between the outer periphery and the dotted line in FIG. 11; hereinafter referred to as “glue margin 120”) extending from the outer periphery on the squeegee surface of the metal mask 110 to the entire periphery with a predetermined width. The surface was roughened while the oxide film adhering to the surface was removed by physically rubbing and polishing with, for example. However, when sandpaper or the like is used for polishing, there is a concern that the working environment may be deteriorated due to dust rising in the air, and there is a concern that polishing variation becomes large and adhesion is not stable. Further, if the metal mask is further thinned, there is a concern that the polishing may cause scratches and damage the appearance.

  On the other hand, even if the metal mask 110 and the mesh 126 are bonded without removing the oxide film, the metal film 110 may be peeled off on the oxide film surface. Therefore, the adhesive margin 120 is physically rubbed with sandpaper or the like to remove the oxide film on the surface, and then an adhesive is applied from above the mesh 126. Then, when the adhesive is cured by leaving or drying, the adhesive applied to the adhesive margin 120 becomes the adhesive layer 118, and the metal mask 110 and the mesh 126 are joined. The area where the adhesive layer 118 exists coincides with the area of the adhesive margin 120.

  FIG. 13 is a plan view showing a state immediately after the metal mask and the mesh are joined, and FIG. 14 is a DD enlarged cross-sectional view thereof. However, in FIG. 14, only a left end periphery is expanded and shown among DD cross sections, and the illustration of the right side is abbreviate | omitted. In the state shown in FIGS. 13 and 14, the squeegee surface of the metal mask 110 is covered with the mesh 126 (reference numerals 126a and 126b). In FIG. 13, the metal mask 110 that is difficult to see due to the presence of the mesh 126 is indicated by a broken line.

  Next, a cut is made in the mesh 126 at the edge portion X ′ at the center of the metal mask 110 of the adhesive margin portion 120 and at the edge of the adhesive layer 118. Then, by removing the center side (reference numeral 126b) of the mesh 126 with the cut as shown in FIG. 15, the outside (reference numeral 126a) of the mesh 126 remains, which stretches the metal mask 110 and the plate frame 114. The mesh 116 is obtained, and a screen printing plate as shown in FIGS. 8 to 10 is obtained.

  At this time, the center side 126b of the mesh 126 with the cut is not bonded to the metal mask 110 by the adhesive layer 118, or is bonded only at the very edge portion. As shown, an unnecessary portion (center side 126b) of the mesh 126 can be easily removed.

  In the cutting portion D ′ of the mesh 116 of the screen printing plate thus obtained, ideally, the cut surface of the mesh 116 and the edge surface of the adhesive layer 118 are aligned as shown in FIG. It is in the same state. However, since the adhesive is applied to the edge portion X ′ of the adhesive margin 120 and the mesh 126 is cut, the cross-section of the mesh 116 and the edge surface of the adhesive layer 118 are exactly one. Unfortunately, there is a region where the adhesive layer 118 is not bonded to the metal mask 110 in the cut surface of the mesh 116. It is extremely difficult to produce a screen printing plate without such a region, and the mesh 116 is always under tension. Therefore, when used as a printing plate, the printing pressure, human physical pressure, When other various loads such as sound waves are applied, the tension is concentrated on the cutting portion D ′ of the mesh 116, and the area becomes a cause of peeling of the mesh 116, which causes a deterioration in the original printability of the metal mask. .

  Further, even if there is a region where the cut surface of the mesh 116 and the edge surface of the adhesive layer 118 coincide with each other, generally, the adhesive force tends to be weak at the edge portion of the adhesive application region at the time of bonding, so There is also a concern that this may cause a deterioration in the original printability of the metal mask.

Japanese Patent Laid-Open No. 11-78203 Japanese Patent Laid-Open No. 11-157042

  Therefore, the present invention is a screen printing plate in which the outer periphery of a metal mask is attached to a plate frame via a stretchable stretch part such as a mesh, and the bonding between the metal mask and the stretchable stretch part is strong. To provide a screen printing plate excellent in durability and less likely to be peeled off due to printing pressure, human physical pressure, etc., and less likely to damage the original printability of a metal mask, and a method for producing the same. Objective.

The above object is achieved by the present invention described below. That is, the screen printing plate of the present invention comprises a metal mask provided with a pattern-shaped hole, a plate frame having an opening larger than the outer shape of the metal mask, the entire periphery of the plate frame and the entire outer periphery of the metal mask. An adhesive for a glue margin portion having a predetermined width from the outer periphery of the squeegee surface or the surface of the printed material of the metal mask, wherein the metal mask and the stretchable stretch portion are joined to each other. A screen printing plate bonded through layers,
At the joint between the metal mask and the stretchable stretch part, the stretchable stretch part is cut slightly on the outer peripheral side from the center side of the metal mask of the adhesive layer, and the cut part is located on the metal mask center side. By removing the stretchable stretch part, an adhesive protruding area where the stretchable stretch part does not exist and the adhesive layer exists is provided on the center side of the metal mask.

  According to the present invention, an adhesive layer is present up to an end portion of the stretchable stretch part at the joint between the stretchable stretch part and the metal mask, and there is no peeling off. Since the edge of the adhesive layer, which tends to weaken the adhesive strength sometimes, is not used for joining them, it is difficult to peel off even if printing pressure or human physical pressure is applied. Therefore, it is possible to provide a screen printing plate with less fear of impairing properties.

  The adhesive margin of the metal mask preferably has a surface roughened by applying a solvent. By roughening the adhesive margin using a solvent, it is possible to avoid the deterioration of the working environment due to dust, which is a concern when physically rubbing with sandpaper, etc., and the instability of adhesion due to polishing variations Can be suppressed.

  In the screen printing plate of this invention, it is preferable that the said expansion-contraction stretch part is mesh shape. The mesh-like stretchable stretch part may be of a material / structure generally used as a mesh (rib) in a metal mask screen plate.

On the other hand, the method for producing a screen printing plate of the present invention (hereinafter sometimes simply referred to as “the production method of the present invention”) includes a squeegee surface or a substrate surface of a metal mask provided with a patterned hole. A polymerization process for superimposing stretchable stretch bodies having an outer shape larger than that of a metal mask;
An adhesive application step of applying an adhesive to the entire circumference over a certain width from the outer periphery of the surface on which the stretchable stretch body of the metal mask is superimposed;
An adhesive curing step for curing the adhesive;
A notching step for cutting the entire stretchable frame into the entire circumference in the middle of the width direction of the region where the adhesive is applied on the surface of the metal mask on which the stretchable stretched body is superimposed; ,
A peeling step of peeling off the center side portion of the stretchable stretched body that has been cut, leaving only the outer portion;
And an adhesive protruding area where the adhesive layer does not exist and the adhesive layer does not exist is provided on the center side of the metal mask.

  In the manufacturing method of the present invention, since the cut is made in the stretchable stretch body in the entire width direction in the middle of the region applied in the adhesive application step, the stretchable stretch body is formed on both sides of the cut. The adhesive layer located at the center side portion of the stretchable stretch body to be removed in the peeling step is left on the surface (squeegee surface or printed material surface) of the metal mask. The outer part (remaining part) of the stretchable stretched body left in the peeling step functions as a stretchable stretched part stretched between a fixing jig such as a plate frame described later and the entire outer periphery of the metal mask. Therefore, the stretchable stretch portion has a region where the stretchable stretch portion does not exist and the adhesive layer is present on the center side of the metal mask. Manufactured.

  Therefore, according to the manufacturing method of the present invention, the expansion / contraction stretched portion (the expansion / contraction stretched body remaining portion) is formed at a joint portion between the stretchable stretchable body remaining portion that functions as the stretchable stretchable portion and the metal mask. ) Because there is no adhesive layer up to the edge of the adhesive layer, and the edge of the adhesive layer, which tends to weaken the adhesive strength during bonding, is not used for joining the two. Even if pressure, human physical pressure, etc. are applied, it is difficult to peel off, and it is possible to easily produce a screen printing plate that is less likely to impair the original printability of the metal mask.

  In the production method of the present invention, prior to the adhesive application step, it is preferable to perform a roughening step operation in which the surface is roughened by applying a solvent to the paste margin of the metal mask. By roughening the adhesive margin using a solvent, it is possible to avoid the deterioration of the working environment due to dust, which is a concern when physically rubbing with sandpaper, etc., and the instability of adhesion due to polishing variations Can be suppressed.

  In the manufacturing method of this invention, it is preferable that the said expansion-contraction stretch body is mesh shape. By making the stretchable stretch body into a mesh shape, the member functioning as the stretchable stretch portion in the obtained screen printing plate can be made into a mesh shape. The mesh-like stretchable stretch body may be of a material / structure generally used as a mesh (rib) in a metal mask screen plate.

  When the stretchable stretch body is mesh-shaped, the operation in the polymerization step may be performed prior to the operation in the adhesive application step. In this case, the operation of applying the adhesive in the adhesive application process is performed from above the stretchable stretch body. On the other hand, regardless of the configuration of the stretchable stretch body, the operation of the polymerization step may be performed after the adhesive application step and before the adhesive curing step.

  When the stretchable stretch body is in a mesh shape, the adhesive application step operation is added after the first application operation performed prior to the polymerization step operation and the polymerization step operation. It is preferable to consist of two coating operations with the second coating operation performed in (1). By applying the adhesive twice before and after superimposing the telescopic stretcher on the metal mask, the adhesive can be reliably applied between the mesh stretchable stretcher and the metal mask in the first application operation. The mesh stretchable stretch body is buried in the adhesive layer by the second application operation, and the adhesion between the stretchable stretch body and the metal mask can be made more robust.

  In the production method of the present invention, a screen printing plate having good handleability fixed to the plate frame is further included by including a plate frame attachment step of fixing the outer periphery of the stretchable stretch body to the plate frame. Can do. As the operation of the plate frame attaching process, the polymerization process, the adhesive application process, the adhesive curing process, the cutting process and the peeling process are independent from each other, and may be performed at any timing. Since it is desired to superimpose the metal mask in a state where an appropriate tension is applied to the stretchable stretch body, it is preferably performed prior to the polymerization step. Of course, as long as it precedes the polymerization step, there is no problem with respect to the adhesive application step.

  In the manufacturing method of the present invention, prior to the operation of the adhesive application step, the area other than the area where the adhesive is to be applied on the surface of the metal mask on which the stretchable stretch body is superimposed is covered. It is also preferable that an operation of a covering process for covering with a covering film is performed. By providing the coating film by performing the operation of the process, the adhesive adheres to a region other than the region where the adhesive is to be applied in the screen printing plate of the present invention in the operation of the adhesive application step. Thus, the adhesive application work can be facilitated and the production efficiency can be improved, and the problem that the plate surface is soiled with the adhesive can be avoided. In order to protect the printing plate, it is desirable to cover not only the surface on which the telescopic stretcher is overlaid but also the back surface thereof with the coating film.

  When the coating film is provided by the operation of the coating process, the coating film removing process of removing the coating film is appropriately performed after the adhesive application process. The operation of the process may be performed at any time after the adhesive application process, but for the purpose of protecting the printing plate with the coating film throughout the manufacturing process, after the completion of all other manufacturing processes ( It is preferable to be performed after completion of the peeling process or after completion of the printing plate attachment process when the printing frame attachment process is performed after the peeling process.

  According to the present invention, the outer periphery of the metal mask is a screen printing plate that is attached to the plate frame via the stretchable stretch part, and the bond between the metal mask and the stretchable stretch part is strong and difficult to peel off, It is possible to provide a screen printing plate excellent in durability that hardly causes peeling due to printing pressure, human physical pressure, or the like, and has little fear of impairing the original printability of a metal mask, and a method for manufacturing the same.

[Screen Printing Plate Embodiment]
First, the screen printing plate of the present invention will be described in detail with reference to the drawings, taking an embodiment.
FIG. 1 is a plan view from the squeegee surface side of a screen printing plate according to an embodiment which is an exemplary aspect of the present invention. Further, FIG. 2 shows an AA enlarged sectional view of FIG. However, in FIG. 2, only a left end periphery is expanded and shown among the AA cross sections, and illustration of the right side is abbreviate | omitted.

  The screen printing plate of the present embodiment includes a metal mask 10 having a desired pattern-shaped hole 12 provided in a predetermined region of a metal plate such as stainless steel, a plate frame 14 having an opening larger than the outer shape of the metal mask 10, The mesh mask 16 is stretched between the entire periphery of the plate frame 14 and the entire outer periphery of the metal mask 10, and the metal mask 10 is stretched over the plate frame 14 via the mesh 16. It is in a state (a state approximated to a so-called “tension”).

In FIG. 2, the shape of the mesh 16 is simplified, but as described in the background section, the state of the mesh 16 and the adhesive layer 18 is as shown in FIG. As shown.
However, in the present invention, the mesh does not necessarily have to be formed by knitting fibers vertically and horizontally. For example, the mesh may be a sheet-like member formed in a mesh shape.

  In the present invention, the adhesive layer does not necessarily include the entire mesh. For example, about half of the mesh in the thickness direction is exposed from the adhesive, or the contact surface between the mesh and the metal mask. The adhesive may be present only on the surface. Such a state is also included in the concept of the “adhesive layer” in the present invention.

  As shown in FIG. 2, the metal mask 10 and the mesh 16 are joined to each other at an adhesive margin portion 20 via an adhesive layer 18 formed of an adhesive. In the present invention, the adhesive layer 18 protrudes from the adhesive margin 20 to the center side of the metal mask (the right side in FIG. 2), and is provided with an adhesive protrusion region 22 where the mesh 16 does not exist. Is. The adhesive protruding area 22 is formed at the joint between the metal mask 10 and the mesh 16 so that the mesh (the state before cutting into the mesh 16) is slightly on the outer circumferential side from the center side of the metal mask of the adhesive layer 18. It is formed by cutting and removing the mesh on the metal mask center side of the cut portion.

  Because of this structure, the adhesive layer 18 is present to the end of the adhesive margin 20 which is a joint between the mesh 16 and the metal mask 10 so as to fill the mesh 16, and therefore peels off. When the tension is concentrated on the edge of the mesh 16 at the center side of the metal mask when the mesh 16 is used in a state where the mesh 16 is always in tension and the tension is concentrated, the mesh 16 peels off in the region. hard. Moreover, the edge part (the right end of the adhesive layer 18 in FIG. 2) of the adhesive layer 18 that tends to have a weak adhesive force at the time of bonding is not used for joining the two. Therefore, the screen printing plate of the present invention hardly peels off even when a printing pressure or a human physical pressure is applied, and has excellent durability with little fear of impairing the original printability of the metal mask.

  It is preferable that the adhesive margin 20 which is an adhesive portion of the metal mask 10 is a surface roughened by applying a solvent (particularly an acid solvent) in advance. By doing in this way, the adhesion failure by an oxide film can be improved without performing polishing with sandpaper or the like, and there is no fear of deterioration of the working environment due to dust during polishing. In addition, there is no polishing variation based on human work such as polishing with sandpaper, and the quality is stabilized and the appearance is beautiful. Therefore, even if the metal mask tends to be thinned, it is possible to solve the problem that the surface is damaged due to scratches due to polishing.

  The width of the adhesive margin 20 (the width referred to as “predetermined width” in the present invention) is not particularly limited as long as the adhesive strength between the mesh 16 and the metal mask 10 is sufficiently maintained. Although it depends on the type of adhesive used and the tension of the mesh 16, it is generally selected from a range of about 15 mm to 25 mm.

  The lower limit of the protruding amount of the adhesive protruding area 22 (the width from the edge of the mesh 16 to the tip of the protruding adhesive layer 18) is sufficient even if it is small, and there is no limit on the lower limit. In view of safety, it is preferably 2 mm or more, and more preferably 3 mm or more. On the other hand, the upper limit of the protruding amount is not particularly problematic if the adhesive layer 18 is not applied to the pattern-shaped hole 12, but if the adhesive protruding region 22 is too large, the adhesive is wasted and therefore does not protrude much. Is preferred. Although it cannot be generally stated, it is preferably 5 mm or less, more preferably 4 mm or less in consideration of workability during production.

[Details of components]
Next, each element constituting the screen printing plate of the present invention will be described in detail.
(Metal mask)
The metal mask in the present invention is a metal plate provided with pattern-shaped holes, and the material of the metal plate is not particularly limited and has been conventionally used as a metal mask material in a metal mask screen printing plate. Various metals can be used without problems. Specific examples include nickel, iron, copper, and alloys containing these metals. Among these, nickel and its alloys are preferable from the viewpoint of workability and economy.

  In the present invention, the thickness of the metal mask is not particularly limited, but is preferably 5 μm or more and more preferably 10 μm or more in order to ensure a certain degree of durability. On the other hand, the upper limit of the thickness of the metal mask can be appropriately thick depending on the purpose, but in order to obtain a high-definition image, it is preferably 100 μm or less, and 50 μm or less. More preferred.

  In the present invention, the size of the metal mask depends on the area of the surface to be printed and is not particularly limited. In general, a rectangular mask having a side of 50 mm to 1000 mm is selected. Of course, in the present invention, the shape of the metal mask is not limited to a rectangle.

Since the pattern-shaped hole (opening) provided in the metal mask is a pattern to be printed with an adhesive material such as solder paste, there is of course no limitation on the size or shape, and a desired shape / size is appropriately selected. The Of course, the pattern depicted in FIG. 1 is merely an example (the same applies to other drawings).
When printing a solder paste for the purpose of wiring or bump formation on a printed circuit board, the opening diameter corresponding to a circle is generally set to 80 μm or more in consideration of the particle size of the solder particles and the function of the printed circuit board. desirable.

(Extension stretcher)
The stretchable stretch part in the present invention is a member that is stretched between the entire circumference of the plate frame and the entire outer periphery of the metal mask (becomes a state that approximates so-called “stretching”). Such a stretchable stretch part is a member having the same significance as that of a mesh (用 い) used in a normal screen printing plate outside the metal mask, and thus has conventionally been used as a material for a mesh (紗) in a screen printing plate. We can use what we had without problem. Specific examples include metal meshes such as stainless steel, aluminum, iron, copper, and alloys containing these metals, and resin meshes such as polyester (for example, Tetron (registered trademark)). Moreover, the thing which coat | covered the surface of these resin meshes with the said metal or alloy may be sufficient.

  However, since the mesh that can be used as the stretchable stretch part in the present invention is not located in the pattern-shaped hole formed in the metal mask, the thickness of the fiber and the density of the fiber (so-called “mesh”) are not affected. There is no limit. As long as it has the desired stretchability and tensile strength that can be stretched between the screen printing plate of the present invention and the plate frame with a tension suitable for printing, the thickness of the fiber and the fiber The density may be any value.

  Moreover, as long as it has the desired stretchability and tensile strength, it is not particularly limited to a mesh shape, and a conventionally known sheet-like or film-like member is adopted as the stretchable stretch portion. Is also possible. From the viewpoint of durability and cost, it is most convenient and preferable to use a mesh-like thing as the stretchable stretch part in the present invention.

(Print frame)
The plate frame in the present invention is a so-called “picture frame” -like member having an opening larger than the outer shape of the metal mask, and is fixed to the plate frame via the stretchable stretch part (so-called “stretching”). In this case, any restriction is not imposed on the shape, structure, size, and material as long as a sufficient tension is applied to the stretchable stretch part and it has sufficient shape retention when subjected to screen printing. As specific materials, various plastic materials may be used in addition to metal materials such as stainless steel, aluminum, iron, and copper.

  The fixing between the expansion / contraction stretcher and the plate frame is not particularly limited, and may be performed by a conventionally known general method. For example, examples of adhesion fixing methods include welding methods, adhesive methods, plating methods, ultrasonic welding methods, mechanical attachment methods such as attachment by pressing with screws or pressers, and the like. There is no problem even if it is done by any method. In addition, the method of bonding the stretchable stretch part and the metal mask in the present invention may be applied to fixing between the stretchable stretch part and the plate frame, which is preferable in that an improvement in the adhesive strength between them can be expected.

(Adhesive layer)
The adhesive layer in the present invention is formed by applying and curing an adhesive. The adhesive that can be used is not particularly limited as long as it has an adhesive performance capable of adhering and fixing between the metal mask and the stretchable stretch part with a necessary and sufficient adhesive strength. Adhesives such as adhesives, epoxy adhesives, cyano adhesives, and rubber adhesives can be used alone or in admixture of two or more. Among these, cyano-based adhesives are generally suitable for stretching, but in the present invention, the effects of the present invention can be expected with any adhesive.

  The thickness of the adhesive layer is not particularly limited, and there is no problem as long as the metal mask and the stretchable stretch part can be bonded and fixed with necessary and sufficient adhesive strength. In particular, when a mesh-like object is used as the stretchable stretch part, the adhesive margin part may be in a state where the mesh is buried in the adhesive layer, but the thickness of the entire adhesive layer at that time However, there is no restriction on the position of the mesh, and the metal mask and the mesh may be in direct contact with each other as viewed microscopically. Also in this case, if the mesh is bonded in a state where it is buried in the adhesive layer, it is included in the concept of “via the adhesive layer” in the present invention. However, rather than the metal mask and the mesh being in direct contact with each other when viewed microscopically, it is more advantageous in terms of adhesion robustness to have an adhesive interposed therebetween.

[Method for producing screen printing plate]
A preferred production method of the present invention for the screen printing plate of the present invention will be described.
The production method of the present invention includes a polymerization step, an adhesive application step, an adhesive curing step, a cutting step, and a peeling step, and if necessary, a plate frame attaching step, a covering step, and further a covering step. The operation of the coating removal process is performed. Hereinafter, each process will be described with reference to FIGS.

(Polymerization process)
The polymerization step is a step of superimposing a stretchable stretch body having an outer shape larger than that of the metal mask on the squeegee surface or the surface of the printed material of the metal mask provided with the pattern-shaped holes.
First, a metal mask 10 having a pattern-like hole 12 having the shape shown in FIG. 3 is prepared. The metal mask 10 may be manufactured by a conventionally known method. Moreover, the pattern-shaped hole 12 is perforated into an arbitrary shape to which the adhesion material is to be applied.

In this example, a sheet-like mesh (expandable stretch body) 26 previously stretched on a plate frame was prepared in the same manner as that described with reference to FIG. 12 in the background art section. Details will be described in the section of the plate frame attaching process.
In this example, an example in which the mesh 26 is bonded to the squeegee surface side of the metal mask 10 will be described.

  The operation of the polymerization process is performed by superimposing the mesh 26 in a state where a predetermined tension is applied (in this example, the tension is stretched on the plate frame 14) on the metal mask 10. The operation of the adhesive application process described later (including the first adhesive operation described later) is performed prior to the main polymerization process, and the adhesive is applied to a certain width from the outer periphery of the squeegee surface of the metal mask 10. In other words, after the adhesive application step, the applied mesh is not cured, and the mesh 26 stretched around the plate frame is superposed. In this case, the operation of this step may be performed very quickly after the adhesive application step, but in order to ensure high adhesiveness immediately after overlaying, the adhesive is cured to some extent to a high viscosity state. You may superimpose from.

(Adhesive application process)
The adhesive application step is a step of applying the adhesive to the entire circumference over a certain width from the outer periphery of the surface of the metal mask on the side where the stretchable stretch body is superimposed. When the operation of the polymerization step is performed prior to the operation of the present adhesive application step, the operation of applying the adhesive in this step is performed from above the mesh 26. In this case, the adhesive penetrates through the mesh gaps of the mesh 26 and reaches the metal mask 14. On the other hand, when the operation of the present adhesive application step is performed before the operation of the polymerization step, the adhesive is directly applied to the metal mask 14.

  A mesh (expandable stretch body) is bonded to the outer periphery of the metal mask 10, but a certain amount from the outer periphery of the squeegee surface so that the width from the outer periphery is wider than the bonded region (glue margin 20). Apply adhesive to the width. In FIG. 3, the operation of the present adhesive application step is performed before the operation of the polymerization step, and the adhesive layer 18 is formed by applying the adhesive. The width from the outer periphery of the metal mask 10 on which the adhesive layer 18 is formed is referred to as “a certain width” in the present invention.

  In the present invention, when applying an adhesive, a sandpaper is used to improve the adhesiveness of a region to which the adhesive is to be applied in advance (particularly, a region serving as a paste margin in a completed screen printing plate). And a roughening step for roughening the surface with an etching solution or the like to improve the texture (roughening).

  However, as already mentioned, in physical polishing such as sandpaper, there is a concern that the working environment will be worsened by dust that has risen in the air, and there is a concern that the polishing variation will increase and adhesion will not be stable. . Further, if the metal mask is further thinned, there is a concern that the polishing may cause scratches and damage the appearance.

  Therefore, as an operation of the roughening step, it is preferable to roughen the surface by applying a solvent to the margin part 20 of the metal mask 10. In this case, first, in the margin portion 20 (of course, the margin portion 20 may be included because the margin portion 20 may be included) as a joint portion between the metal mask 10 and the mesh 16. Solvents such as an etching solution (requiring any liquid having reactivity with a metal mask, preferably an acid solvent, specifically, hydrochloric acid, nitric acid, sulfuric acid, ferric chloride, etc.) Apply and leave for a few minutes. At this time, the standing time may be appropriately selected in consideration of the type of solvent used and the material of the metal mask. Empirically, when it is confirmed that the oxide film adhering to the surface is dissolved and the surface of the metal mask 10 is whitened and roughened, the surface is washed with water or the like.

  Thereafter, the above-described operation of the adhesive application process is performed. By doing in this way, the adhesion failure by an oxide film can be improved, without performing grinding | polishing by sandpaper etc., and there is no concern of the deterioration of the working environment by the dust at the time of grinding | polishing. In addition, there is no polishing variation based on human work such as polishing with sandpaper, and the quality is stabilized and the appearance is beautiful. Therefore, even if the metal mask tends to be thinned, it is possible to solve the problem that the surface is damaged due to scratches due to polishing.

  The roughening process is not problematic as long as it is performed prior to the adhesive coating process in the manufacturing method of the present invention, and may be performed at the metal mask manufacturing stage or at the material stage. Of course, it may be performed after the coating step described later.

  In the case where the stretchable stretch body is mesh-like as in the mesh 26 in this example, a certain amount of width from the outer periphery of the squeegee surface of the metal mask 10 is first obtained before the mesh 26 is superimposed on the metal mask 10. The adhesive is directly applied to the metal mask (first application operation), and the mesh 26 is superposed thereon (operation of the polymerization process), and then the adhesive is applied again from the top of the mesh 26 to the same portion of the metal mask 10 (first operation). 2 application operation), it is more preferable to apply the adhesive twice (two application operations). In this case, the two coating operations performed before and after the polymerization process are combined as one adhesive coating process as a whole.

  In the case of coating from the top of the mesh 26 which is excellent in that the mesh 26 can be firmly bonded in a state where it is buried in the adhesive layer 18 (coating after the polymerization step), the mesh 26 and the metal mask 10 are in direct contact with each other. There may be a site where no adhesive is present. However, by applying twice as described above, the first coating operation is first performed to ensure that the adhesive is interposed between the mesh 26 and the metal mask 10, and then the second coating operation is performed. The mesh 26 can be firmly bonded in a state where it is buried in the adhesive layer 18, and the adhesive strength between the two can be remarkably increased.

(Coating process)
The covering step is a step of covering a region other than the region where the adhesive is to be applied on the surface of the metal mask on the side where the stretchable stretch body is superposed, with a coating film prior to the operation of the adhesive applying step. It is. Although this process is not an essential process, if the operation of the process is performed and the coating film is formed on the surface and the adhesive coating operation is performed in the adhesive coating process, the process can be easily performed. The efficiency can be improved, and a problem that the plate surface is soiled with an adhesive can be avoided.

If it demonstrates in this example, the area | region covered with a coating film in a coating process is a white area | region (including the pattern-shaped hole 12) other than the adhesive bond layer 18 of the edge part of the metal mask in FIG. A coating film is provided in this area by a known method.
The coating film may be provided on at least the surface of the metal mask on the side where the stretchable stretch body is superimposed, but may be provided on both surfaces for the purpose of protecting the entire metal mask.

  As the coating film provided in this step, any coating film provided for the purpose of sealing on the non-coating surface of the object to be coated can be applied so that the coating material does not flow around during coating. A general method is a method of attaching various seals or laminate films, which is convenient and preferable in the present invention. In particular, according to the method of laminating the both sides of the metal mask by laminating the both sides of the metal mask, a coating film (laminate film) can be simultaneously provided on both sides of the metal mask, and the entire metal mask is protected as described above. It is preferable at the point which can do.

  In the case of double-sided laminating, once the entire metal mask is completely laminated with a laminate film, cut into a laminate film at the boundary line between the area where the coating film is not provided and the area to be covered with the coating film with a cutter or the like. The required portion can be exposed by peeling the laminate film in the region where the coating film is not provided, and the coating film can be provided here.

  In addition, it may be sealed with a so-called sealing agent or a sealing tape, or a peelable paint (stripping paint) may be applied and dried to form a coating film (in these cases, the coating film) May be in a state of closing the pattern-like hole 12 or in an open state.

  The operation of the coating process may be performed at any time prior to the adhesive application process, but when the polymerization process is performed before the adhesive application process, the metal mask surface expands and contracts. Since it is in a state of being covered with a stretched body and a coating film cannot be provided, it is necessary to do it before the polymerization step.

(Adhesive curing process)
The adhesive curing step is a step of curing the adhesive in a state where the stretchable stretch body (mesh) and the metal mask (squeegee surface or printed material surface) are overlapped and the adhesive is applied. It is. In order to cure the adhesive, it is sufficient to apply some action or simply leave it as it is in accordance with the properties of the adhesive used.

The specific operation of this process is to fix the two in an overlapped state, leave them for a certain period of time, dry them by applying wind, etc., or apply heat, ultraviolet rays, etc. to heat cure Causing a curing reaction such as UV curing.
4 is a plan view showing a state after the operation of the adhesive curing process is performed, and FIG. 5 is an enlarged cross-sectional view taken along the line BB of FIG. However, in FIG. 5, only the periphery of the left end is shown enlarged in the BB cross section, and the illustration on the right side is omitted.

  The applied adhesive becomes the adhesive layer 18, and the metal mask 10 and the mesh 26 are joined. In the state shown in FIGS. 4 and 5, the squeegee surface of the metal mask 10 is covered with the mesh 26. In FIG. 4, the metal mask 10 that is difficult to see due to the presence of the mesh 26 is indicated by a broken line.

  As the degree of curing of the adhesive in this step, it is desirable that the adhesive is completely cured when the screen printing plate is finally completed, but the metal mask 10 and the mesh 26 are bonded with a predetermined adhesive force. It is possible to proceed to the operation of the next process (cutting process) after pre-curing until it becomes. In the peeling step to be described later, it is preferable to proceed to the previous step in a temporarily cured state in that the center side 26b of the mesh 26 with cuts can be easily peeled off from the adhered adhesive protruding region 22.

  Note that the predetermined adhesive force in the case of pre-curing means that the central side 26b of the mesh 26 is removed during the operation of the peeling process described later, and the outer side 26a of the remaining mesh 26 is replaced with the metal mask 10 and the plate frame 14. Even when tension is applied, the adhesive strength is such that the bonding between the outer side 26a of the mesh 26 and the metal mask 10 does not peel off.

  In the case of proceeding to the operation after the next step in the state of temporary adhesion, the adhesive is cured after the operation after the next step or together with the operation after the next step in order to cure until complete curing or a cured state equivalent thereto. It is preferable to operate the process. Of course, when an adhesive with a nature that spontaneously cures is used, the time required for operations such as the cutting process and the peeling process is left as it is, so it is necessary to dare to perform an operation for curing the adhesive. Sometimes it is not.

(Cutting process)
The incision step is a halfway in the width direction of the region where the adhesive is applied on the surface of the metal mask on which the stretchable stretch body is overlapped, and the stretchable stretch body (mesh) This is a process of making a cut into the).

As described above, after the operation of the adhesive curing process, the squeegee surface of the metal mask 10 is covered with the mesh 26, and the patterned holes 12 of the metal mask 10 are exposed from the squeegee surface. In order to achieve this, it is necessary to remove the covered mesh 26, and prior to that, a cut is made in the mesh 26 in this step.
As a method for making the cut, a general cutter or knife may be used, but there is no particular limitation as long as the method can make the cut.

  The position where the cut is made is midway in the width direction of the region where the adhesive is applied (the direction from the outer periphery to the inner side of the metal mask 10), and is the position indicated by the arrow X in FIGS. is there. Conventionally, the position where the incision is made is the position indicated by the arrow X ′ in FIG. 14 (corresponding to the position indicated by the arrow Y in FIGS. 4 and 5). In the manufacturing method of the present invention, the bonding is performed in this way. A cut is made in the middle of the agent layer 18. Therefore, the adhesive force by the adhesive layer 18 acts in the adhesive protruding area 22, and the center side (reference numeral 26 b) of the mesh 26 with the cut is stuck to the metal mask 10.

(Peeling process)
A peeling process is a process which peels off the center side part of the said expansion-contraction tension | tensile_strength (mesh) into which the cut | incision was carried out, and leaves only an outer side part.
In this step, as shown in FIG. 6, the center side 26b of the mesh 26 with the cut is removed by peeling it off from the adhered adhesive protruding region 22, leaving the outside of the mesh 26 (reference numeral 26a). The outer side 26 a of the remaining mesh 26 becomes an expansion / contraction stretched portion (mesh 16) that stretches the metal mask 10 and the plate frame 14.

  FIG. 7 shows an enlarged cross-sectional view of region E in FIG. That is, FIG. 7 is an enlarged cross-sectional view of the joint between the mesh 16 (26a) and the metal mask 10 and its periphery in the screen printing plate having the configuration of the present invention manufactured by the above manufacturing method. In FIG. 2 (and FIG. 6), the shape of the mesh 16 (26a) is shown in a simplified form. However, as shown in FIG. 7, the mesh 16 (26a) has fibers 16a and 16b knitted vertically and horizontally. Configured. The adhesive layer 18 is in a state of being bonded to the surface (squeegee surface or printed material surface) of the metal mask 10 in a state in which the fibers include fibers knitted vertically and horizontally.

As shown in FIG. 7, the adhesive layer 18 that contributes to the joining of the metal mask 10 and the mesh 16 at the glue margin 20 protrudes from the glue margin 20 to the center side of the metal mask (right side in FIG. 7). The adhesive protrusion area | region 22 in which 16 does not exist is formed. As shown in FIG. 6, the adhesive protruding area 22 is formed by an adhesive remaining in an adhesive portion between the metal mask 10 and the mesh 26 a to be removed by being peeled off.
As described above, the screen printing plate of the present invention as shown in FIGS. 1 and 2 is manufactured.

(Plate frame installation process)
The plate frame attaching step is a step of fixing the outer periphery of the stretchable stretch body (mesh) to the plate frame.
As described above, in this example, a sheet-like mesh (expandable stretched body) 26 that was stretched on the plate frame 14 in advance was prepared. Therefore, the operation of the plate frame attaching process is performed prior to the polymerization process. In this case, in the plate frame attaching step, the mesh 26 is fixed to the plate frame 14 with an appropriate tension applied to the mesh 26. At this time, the tension applied to the mesh 26 becomes the tension applied to the mesh (the mesh 16 in FIGS. 1 and 2) as the stretchable stretch portion of the screen printing plate after completion. That's fine.

  In the production method of the present invention, the operation of the plate frame attaching step may be performed after the coating step, the polymerization step, the adhesive application step, the adhesive curing step, the cutting step, or the peeling step, and further, the plate frame 14 You may use without attaching. However, in the polymerization process, the adhesive curing process, the cutting process, or the peeling process, each operation is performed in a state where an appropriate tension is applied to the mesh 26, and the tension is maintained even in the stage where printing is performed. Is done. Therefore, when the operation of the plate frame attaching step is performed after the polymerization step, it is necessary to apply a desired tension to the mesh 26 prior to the polymerization step and hold it until the plate frame attaching step. In that regard, if the plate frame 14 is attached to the mesh 26 in advance with a desired tension, the subsequent handling is good, and therefore it is preferable to perform the operation of the plate frame attachment step prior to the polymerization step.

(Coating film removal process)
When the above-described coating process is performed, the coating film removal process is performed to remove the provided coating film. The coating film removing process is a process of peeling the coating film provided in the coating process at any time after the adhesive application process.

  The operation of this step varies depending on the type of coating film provided, but a method of attaching various laminate films and seals, or a method of forming a coating film using a paint (stripping paint) that can be peeled off after curing If so, the coating film may be directly peeled off. In addition, for example, the coating film may be peeled off by a suitable method such as a method using a solvent (peeling agent) for dissolving the coating film.

  The operation of the coating film removal process can be performed at any time after the adhesive application process, but after the operation of the coating process, before the operation of the coating film removal process is performed. When the operation is performed, the stretchable stretch body covers the coating film formed on the surface of the metal mask, and the coating film removing process cannot be performed as it is. In this case, the operation of the peeling process is further performed, and the coating film that has been exposed by removing excess stretchable stretch bodies on the surface may be peeled off by the operation of this process.

  As described above, the operation of the coating film removing step can be performed at any time after the adhesive coating step as long as the peritoneum is exposed. Is performed after the completion of all other manufacturing processes (after completion of the peeling process, or after completion of the printing plate mounting process if the printing frame mounting process is performed after the peeling process). Is preferred.

  Moreover, you may use for a transaction or distribution | circulation as a screen printing plate in the state which left the coating film on the surface, without performing operation of a coating film removal process. By keeping the plate surface covered with the coating film, it is possible to protect the plate surface of the metal mask during transactions and distribution. In this case, the final screen printing plate user removes the remaining coating film.

  By the manufacturing method of the present invention described above, the screen printing plate of the present invention having the adhesive protruding area 22 as shown in FIGS. 1 and 2 and having an excellent function can be easily manufactured.

  In addition, according to the said manufacturing method, since it cuts with the cutter etc. from the direction of the said arrow X in the cutting process in the position shown by the arrow X in FIG.4 and FIG.5, the adhesive bond layer in the position of the said arrow X 18 may also be cut. Even if the notch is halfway in the thickness direction of the adhesive layer 18 or reaches the metal mask 10 and the adhesive layer 18 is divided, the screen printing plate after completion is mesh 16 (mesh The adhesive layer 18 is present up to the end of the outer side 26a) (the position of the arrow X), there is no peeling, and the edge of the adhesive layer 18 where the adhesive force tends to be weakened at the time of adhesion is Since it is not used for joining, there is no influence on the effect of the present invention. Therefore, it does not matter whether the adhesive layer 18 is cut halfway in this way or even if it is in a divided state. The expression “adjacent to the margin” in the present invention naturally includes such a state as a concept.

  In the description of the above manufacturing method, an example in which the mesh 26 is used as the stretchable stretch body that functions as the stretchable stretch portion when the screen printing plate is completed is used. In the case of using them, the above manufacturing method may be applied using sheets of those materials instead of meshes.

  In the above embodiments and production examples, the description has been made by taking as an example the configuration in which the meshes (extension / extension stretcher or extension / retraction extension) 16 and 26 are bonded to the squeegee surface side of the metal mask 10. In this case, the expansion / contraction stretch part or the expansion / contraction stretch body is not limited to the squeegee surface side, and may be on the substrate side. Which surface the stretchable stretch portion or stretchable stretch body is bonded to may be selected as appropriate from the intended use of the screen printing plate after completion, manufacturing suitability, and the like.

  As described above, the screen printing plate and the production method thereof according to the present invention have been described in detail with reference to preferred embodiments and production examples. However, the present invention is not limited to the above embodiments and production examples. A trader can add changes or improvements to the configuration of the present invention based on known knowledge.

It is a top view from the squeegee surface side of the screen printing plate of embodiment which is an exemplary aspect of this invention. It is an AA expanded sectional view which expands and shows only the left end periphery among the AA cross sections in FIG. It is a figure for demonstrating and giving the example about the manufacturing method of the screen printing plate of this invention, and is a top view from the squeegee surface side of the metal mask used for manufacture of a screen printing plate. It is a figure for demonstrating a manufacturing process, giving an example about the manufacturing method of the screen printing plate of this invention, and is a top view from the squeegee surface side which shows the state which joined the metal mask to the mesh. 5 is an enlarged BB cross-sectional view showing only the left end periphery in the BB cross section in FIG. 4. FIG. It is a figure for demonstrating a manufacturing process about an example about the manufacturing method of the screen printing plate of this invention, and is an expanded sectional view which shows the state which peeled off the unnecessary part of the mesh from the state shown by FIG. . It is an expanded sectional view of the area | region E in FIG. It is a top view from the squeegee surface side which shows an example of the conventional screen printing plate. It is CC expanded sectional drawing which expands and shows only the left end periphery among CC cross sections in FIG. FIG. 10 is an enlarged cross-sectional view of a region E ′ in FIG. 9. It is a figure for demonstrating and giving the example about the manufacturing method of the conventional screen printing plate, and is a top view from the squeegee surface side of the metal mask used for manufacture of a screen printing plate. It is a figure for demonstrating and giving the example about the manufacturing method of the conventional screen printing plate, and is a top view of the mesh attached to the plate frame used for manufacture of a screen printing plate. It is a figure for demonstrating a manufacturing process, giving an example about the manufacturing method of the conventional screen printing plate, and is a top view which shows the state which joined the metal mask to the mesh. It is DD expanded sectional drawing which expands and shows only the left end periphery among DD cross sections in FIG. It is a figure for demonstrating a manufacturing process, giving an example about the manufacturing method of the conventional screen printing plate, and is an expanded sectional view which shows the state which peeled off the unnecessary part of the mesh from the state shown by FIG.

Explanation of symbols

10, 110: Metal mask 12, 112: Patterned hole 14, 114: Plate frame 16: Mesh (expandable stretch part)
18, 118: Adhesive layer 20, 120: Adhesive margin 22: Adhesive protruding area 26: Mesh (stretchable stretchable body)
116, 126: mesh

Claims (12)

A metal mask provided with a pattern-shaped hole, a plate frame having an opening larger than the outer shape of the metal mask, and a stretchable stretch stretched between the entire periphery of the plate frame and the entire outer periphery of the metal mask And the joint between the metal mask and the stretchable stretch part is bonded from the outer periphery of the metal mask on the squeegee surface or the surface of the printed material through an adhesive layer having a predetermined margin. A print version,
At the joint between the metal mask and the stretchable stretch part, the stretchable stretch part is cut slightly on the outer peripheral side from the center side of the metal mask of the adhesive layer, and the cut part is located on the metal mask center side. A screen printing plate characterized in that by removing the stretchable stretch portion, an adhesive protrusion region in which the stretchable stretch portion does not exist and the adhesive layer exists is provided on the center side of the metal mask. The screen printing plate according to claim 1, wherein the adhesive margin of the metal mask has a surface roughened by applying a solvent. A polymerization step of superimposing a stretchable stretch body having an outer shape larger than that of the metal mask on the squeegee surface or the surface of the printed material of the metal mask provided with a pattern-shaped hole;
An adhesive application step of applying an adhesive to the entire circumference over a certain width from the outer periphery of the surface on which the stretchable stretch body of the metal mask is superimposed;
An adhesive curing step for curing the adhesive;
A notching step for cutting the entire stretchable frame into the entire circumference in the middle of the width direction of the region where the adhesive is applied on the surface of the metal mask on which the stretchable stretched body is superimposed; ,
A peeling step of peeling off the center side portion of the stretchable stretched body that has been cut, leaving only the outer portion;
A method for producing a screen printing plate comprising: providing an adhesive protruding area in which the stretchable stretch portion does not exist and the adhesive layer exists on the center side of the metal mask. 4. The screen printing plate according to claim 3, wherein, prior to the adhesive application step, a surface roughening step is performed in which a surface is roughened by applying a solvent to the adhesive margin of the metal mask. Manufacturing method. The method for producing a screen printing plate according to claim 3 or 4, wherein the operation in the polymerization step is performed prior to the operation in the adhesive application step. The method for producing a screen printing plate according to claim 3 or 4, wherein the operation of the polymerization step is performed after the adhesive application step and before the adhesive curing step. The adhesive coating process consists of two coating operations, a first coating operation performed prior to the operation of the polymerization process and a second coating operation additionally performed after the operation of the polymerization process. The method for producing a screen printing plate according to claim 3 or 4, wherein: Furthermore, the manufacturing method of the screen printing plate in any one of Claims 3-7 including the plate frame attachment process which fixes the outer periphery of the said expansion-contraction stretch body to a plate frame. The method of manufacturing a screen printing plate according to claim 8, wherein the operation of the plate frame attaching step is performed prior to the polymerization step. Prior to the operation of the adhesive application step, the operation of the coating step of covering the region other than the region where the adhesive is to be applied on the surface of the metal mask on the side where the stretchable stretch body is superimposed is performed. The method for producing a screen printing plate according to any one of claims 3 to 9, wherein: The method for producing a screen printing plate according to claim 10, wherein the coating film further covers a back surface of the metal mask on the side where the stretchable stretch body is superimposed. The screen printing plate according to claim 10 or 11, further comprising a coating film removing step of peeling the coating film provided in the coating step at any time after the adhesive coating step. Production method.

Images