JP2003276352A - Method for manufacturing screen plate - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problem with a screen plate used to manufacture a PDP panel that a printing material bleeding on the screen plate is wiped off by a wiping sheet after being used for printing on the panel, but stain due to bleeding cannot be completely wiped off because the wiping sheet peels off due to a vibration during a wiping operation or its own weight. <P>SOLUTION: A method for manufacturing the screen plate comprises the steps of dividing a coating area on the screen plate by using two types of emulsions by using the two types of the emulsions containing different silicon contents as the printing material for the screen plate. Thus, adhesive properties of the screen plate with the wiping sheet are improved at a rear part of the screen plate. According to this, peeling of the sheet from the screen plate due to the own weight of the sheet or the vibration of a printer can be suppressed, and a printing unevenness fault due to incompletion of stain bleeding can be reduced. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a screen plate, and more particularly to a method for removing a printing material oozing from the printing surface of the screen plate to the lower surface of the screen plate after printing.

[0002]

2. Description of the Related Art Conventionally, a pattern printing method for a plasma display panel is performed by the procedure shown in FIGS. First, a screen mesh is adhered to an aluminum frame of a screen plate, and an emulsion containing a predetermined amount of silicon is applied through the screen mesh. Then, the emulsion is exposed and developed to form a pattern on the screen plate. Then, the screen plate is set in a printing device to print the pattern of the screen plate on a product substrate (plasma display panel). Next, when printing on the product substrate is completed, the auxiliary roller 2 and the bleeding roller 3 move to the screen plate front portion 20 while pulling out the wiping sheet 4, and rise to a position in contact with the screen plate 1.
(FIG. 2A) Next, the wiping sheet 4 is pressed against the screen plate 1 from the lower surface side of the screen plate 1 by using the bleeding roller 3 and the upper surface side of the screen plate 1 with the squeegee 6 to press the bleeding roller 3 The squeegee 6 is synchronously moved from the screen plate front portion 20 of the screen plate 1 to the screen plate rear portion 30 (FIG. 2B). Here, the wiping sheet 4 is made of an adhesive material, and has a bleeding roller 3 and a squeegee 6.
The wiping sheet 4 is brought into close contact with the back surface of the screen plate 1 by synchronizing with. Next, the squeegee 6 is raised to move the bleeding removal roller 3 to the front portion 20 of the screen printing plate 1 (FIG. 3A). Next, the take-up roller 7
The auxiliary roller 2 and the bleeding roller 3 are returned to the rear portion 30 of the screen plate at the same time when the roller is rotated (FIG. 3B). By this operation, the wiping sheet 4 is peeled off from the screen plate 1, and the paste exuded on the lower surface of the screen plate 1 is transferred to the wiping sheet 4.

[0003]

However, in the above-mentioned operation of the wiping sheet 4, the wiping sheet 4 which is in close contact with the rear portion of the screen plate is peeled off due to vibration during operation or the self-weight of the sheet, so that the bleeding is completely removed. There may be a problem that it is not performed. Therefore, when a pattern is printed on the product substrate in this state, uneven printing occurs. This is for the following reason.
That is, the emulsion coated on the lower surface of the screen plate 1 is
A pattern is formed through exposure and development and contains a predetermined silicon. This is because, with this predetermined silicon content, the adhesive force between the screen plate and the wiping sheet is insufficient with respect to the weight of the wiping sheet 4 which the screen plate receives on the lower surface of the rear surface of the screen plate.

In the conventional screen plate manufacturing method, the adhesion between the screen plate and the wiping sheet depends on the adhesion between the wiping sheet, and therefore the wiping sheet in close contact with the rear part of the screen plate is vibrated during operation or Peeling was easy to occur due to the weight of the sheet. An object of the present invention is to provide a method of manufacturing a screen plate for improving the adhesion between the screen plate and the wiping sheet during the bleeding operation, which removes the printing paste oozing on the lower surface of the screen plate in the printing operation in the PDP pattern printing step. To provide.

[0005]

A method of manufacturing a screen plate according to the present invention comprises the steps of applying an organic material containing silicon on one surface of the screen plate, exposing and developing,
A step of forming a printing pattern, a step of transferring the printing paste to a product substrate by using the screen plate, a step of bringing a wiping sheet into contact with one surface of the screen plate, and the wiping sheet Is sequentially peeled from one side of the one side of the screen plate toward the opposite side, and the step of removing the printing paste exuded on the one side of the screen plate is a method of manufacturing a screen plate. The organic material in the predetermined area on the one side of the one surface of the screen plate contains more silicon than the organic material in the area other than the predetermined area on the one surface of the screen plate. .

In the method for manufacturing a screen printing plate of the present invention, the predetermined area includes an area corresponding to the print pattern, and the organic material is an emulsion containing silicon.

Further, in the above-described method for manufacturing a screen plate according to the present invention, the organic material in a predetermined region on one side of one surface of the screen plate is silicon 1.7 to 2.0.
The organic material in an area other than the predetermined area on one surface of the screen plate contains silicon in an amount of 1.0 to 1.5% by weight.

Further, in the method of manufacturing a screen plate according to the present invention, in the step of bringing the wiping sheet into contact with one surface of the screen plate, the wiping sheet is provided on the other surface side and one surface of the screen plate. From one side, the whole surface of one side of the screen plate is pressed.

Further, in the method of manufacturing a screen plate according to the present invention, the step of bringing the wiping sheet into contact with one surface of the screen plate and the step of removing the printing material wipes one surface of the screen plate. Adhesion and peeling of the take-off sheet are performed by using a roller arranged on one surface side of the screen plate.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of a method for manufacturing a screen printing plate of the present invention will be described with reference to FIGS. Figure 1 (a)
Is a plan view of the screen plate viewed from the lower surface side, and FIG. 7B is a plan view of the screen plate viewed from the upper side.
2 and 3 are schematic views of the printing apparatus viewed from the side for explaining a process of printing a pattern on the lower surface of the screen printing plate using the printing apparatus and then wiping off the printing material oozing from the lower surface of the screen printing plate. .

First of all, two kinds of emulsions 2 in which the screen plate 1 is made to adhere to the aluminum frame 8 with a screen mesh, and silicon is changed by containing silicon through the screen mesh 2
1, 22 are applied to the lower surface of the screen plate 1. afterwards,
The emulsion is exposed and developed to form a product pattern 23 on the screen plate 1 (FIG. 1). Subsequently, the screen plate 1 is set in the printing apparatus 100, and the product pattern 23 on the lower surface of the screen plate 1 is printed on the product substrate (plasma display panel).

FIG. 1 is a plan view showing the distribution of two kinds of emulsions applied to the lower surface of the screen plate 1 in order to improve the adhesion between the screen plate 1 and the wiping sheet 4.
On the lower surface of the screen plate 1, 1.7-
Emulsion 21 mixed with 2.0 wt% and silicon 1.
Two kinds of emulsions, namely, the emulsion 22 mixed with 0 to 1.5 wt% are coated and formed. At this time, the emulsion 22 having a small amount of silicon is applied to the rear of the lower surface of the screen plate, and the lower surface of the screen plate including the remaining product pattern 23 is applied so that the emulsion 21 having a large amount of silicon is positioned. This makes it possible to optimize the adhesion strength between the wiping sheet and the screen plate over the entire lower surface of the screen plate. Next, the screen plate 1 is set in the printing device 100. After transferring the pattern printed on the lower surface of the screen plate 1 to the product substrate, the auxiliary roller 2 and the bleeding roller 3 wipe the wiping sheet 4 while the wiping sheet 4 is pulled out from the sheet drawing roller 5 around which the wiping sheet 4 is wound. And moves up to a position in contact with the screen plate 1 (FIG. 2 (a)). Next, wipe the wiping sheet 4 with the screen plate 1
Is pressed against the screen plate 1 from the lower surface side of the screen using the bleeding roller 3 and the squeegee 6 from the upper surface side of the screen plate 1,
The bleeding removal roller 3 and the squeegee 6 are synchronized with each other so that the screen plate front portion 20 to the screen plate rear portion 3 of the screen plate 1
It is moved to 0 (FIG. 2 (b)). Here, the wiping sheet 4 is made of an adhesive material, and the bleeding roller 3
By synchronizing the squeegee 6 and the squeegee 6, the wiping sheet 4 is brought into close contact with the lower surface of the screen plate 1. Next, the squeegee 6 is raised to move the bleeding removal roller 3 to the front portion 20 of the screen printing plate 1 (FIG. 3A). Next, the winding roller 7 is rotated, and at the same time, the auxiliary roller 2 and the bleeding roller 3 are returned to the screen plate rear portion 30 (see FIG. 3).
(B)). By this operation, the wiping sheet 4 is peeled off from the screen plate 1, and the paste exuded on the lower surface of the screen plate 1 is transferred to the wiping sheet 4. As described above, in the method for manufacturing a screen plate of the present invention, in order to optimize the adhesion with the wiping sheet, two kinds of emulsions having different silicon contents to be applied to the screen plate are prepared, and two kinds are further prepared. The emulsion of is properly used depending on the place of the screen plate. By applying the emulsion 22 having a small amount of silicon to the lower surface of the rear portion of the screen plate, the adhesive strength between the wiping sheet and the screen plate is 1.5 times the adhesive strength of the emulsion 21.

As described above, the emulsion 22 is used in the rear part 30 of the screen plate to improve the adhesion between the screen plate 1 and the wiping sheet 4, so that the wiping sheet 4 is vibrated by the weight of the wiping sheet 4 and the vibration of the printing apparatus. It is possible to prevent peeling at the rear part 30 of the screen plate and reduce uneven printing due to incomplete bleeding removal.

[0014]

INDUSTRIAL APPLICABILITY In the screen plate manufacturing method of the present invention, two kinds of emulsions having different silicon contents are used in the screen plate, and the coating areas on the screen plate are divided by using the two kinds of emulsions. , Improve the adhesion between the rear part of the screen plate and the wiping sheet. This allows
By suppressing the phenomenon that the wiping sheet is peeled off from the screen plate due to the self-weight of the wiping sheet or the vibration of the printing apparatus, it is possible to reduce the uneven printing due to the unbleeding.

[Brief description of drawings]

FIG. 1 is a plan view showing distributions of two kinds of emulsions used in a method for producing a screen plate of the present invention on a screen plate printing surface.

FIG. 2 is a schematic view of the printing apparatus viewed from the side for explaining the step of wiping off the printing material oozing from the lower surface of the screen plate after printing the pattern on the lower surface of the screen plate using the printing apparatus.

FIG. 3 is a schematic diagram of a printing apparatus showing a step following FIG.

[Explanation of symbols]

1 screen version 2 Auxiliary roller 3 bleed roller 4 wipe sheet 5 Sheet pull-out roller 6 squeegee 7 Take-up roller 8 Aluminum frame 20 screen version front 21,22 emulsion 23 product patterns 30 screen version rear 100 printing device

Claims (6)

[Claims] 1. A step of applying an organic material containing silicon onto a screen plate, a step of exposing and developing to form a printing pattern, and a step of using the screen plate to apply the printing paste to a product. A step of transferring to a substrate, a step of bringing a wiping sheet into contact with one surface of the screen plate, and peeling off the wiping sheet in order from one side of the screen plate toward the opposite side, and the screen A method of manufacturing a screen plate having a step of removing the printing paste exuded on one surface of the plate, wherein the organic material in a predetermined region on one side of the one surface of the screen plate is A method of manufacturing a screen printing plate, comprising more silicon than an organic material in a region other than the predetermined region on one surface of the screen printing plate. 2. The method of manufacturing a screen plate according to claim 1, wherein the predetermined area includes an area corresponding to the print pattern. 3. The method for producing a screen plate according to claim 1, wherein the organic material is an emulsion containing silicon. 4. The organic material in a predetermined region on one side of one surface of the screen plate is silicon 1.7 to 2.0.
4. The method of manufacturing a screen plate according to claim 3, wherein the organic material in the region other than the predetermined region on the one surface of the screen plate contains 1.0 to 1.5% by weight of silicon. 5. In the step of bringing a wiping sheet into contact with one surface of the screen plate, the wiping sheet is applied from the other surface side and one surface side of the screen plate to the entire one surface of the screen plate. Claim 1 which makes pressure contact across
5. The method for manufacturing a screen plate according to any one of items 4 to 4. 6. In the step of bringing a wiping sheet into contact with one surface of the screen plate and the step of removing the printing material, the wiping sheet is adhered to and peeled from the one surface of the screen plate respectively. The method for producing a screen plate according to claim 1, wherein the screen plate is manufactured using a roller arranged on one surface side of the plate.