GB2249052A - Method for stretching a screen in a screen printing plate - Google Patents
Method for stretching a screen in a screen printing plate Download PDFInfo
- Publication number
- GB2249052A GB2249052A GB9119950A GB9119950A GB2249052A GB 2249052 A GB2249052 A GB 2249052A GB 9119950 A GB9119950 A GB 9119950A GB 9119950 A GB9119950 A GB 9119950A GB 2249052 A GB2249052 A GB 2249052A
- Authority
- GB
- United Kingdom
- Prior art keywords
- screen
- stretching
- screen printing
- fixing portion
- printing plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41C—PROCESSES FOR THE MANUFACTURE OR REPRODUCTION OF PRINTING SURFACES
- B41C1/00—Forme preparation
- B41C1/14—Forme preparation for stencil-printing or silk-screen printing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F15/00—Screen printers
- B41F15/14—Details
- B41F15/34—Screens, Frames; Holders therefor
- B41F15/36—Screens, Frames; Holders therefor flat
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/10—Apparatus or processes for manufacturing printed circuits in which conductive material is applied to the insulating support in such a manner as to form the desired conductive pattern
- H05K3/12—Apparatus or processes for manufacturing printed circuits in which conductive material is applied to the insulating support in such a manner as to form the desired conductive pattern using thick film techniques, e.g. printing techniques to apply the conductive material or similar techniques for applying conductive paste or ink patterns
- H05K3/1216—Apparatus or processes for manufacturing printed circuits in which conductive material is applied to the insulating support in such a manner as to form the desired conductive pattern using thick film techniques, e.g. printing techniques to apply the conductive material or similar techniques for applying conductive paste or ink patterns by screen printing or stencil printing
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Screen Printers (AREA)
- Printing Plates And Materials Therefor (AREA)
- Manufacture Or Reproduction Of Printing Formes (AREA)
Abstract
A method for stretching a screen in a screen printing plate wherein the method comprises fixing the screen (6) to the screen frame (1) by means of an adhesive bond (7), applying a photo-setting resin (8) over the bond (7), thence hardening said resin to form a protective coating (9) to protect the adhesive bond (7) from solvents used to clean the screen. The invention particularly relates to screen printing used during the manufacture of printed wiring boards. <IMAGE>
Description
"A METHOD FOR STRETCHING A SCREEN IN A
SCREEN PRINTING PLATE"
The present invention relates to a method for stretching a screen in a screen printing plate used for printing an etching resist or other resist during the manufacture of printed wiring boards.
Conventionally, the screen printing method has been widely adopted for printing an etching resist or other resist ink during the manufacture of printed wiring boards.
The screen printing plate for use with such screen printing is constructed by fixing the outer periphery of a screen made of gauze to a screen frame with a predetermined tension being applied.
In addition, said screen printing plate is usually re-used for resource saving after the termination of a particular printing.
For such re-use, the printing ink used for the screen printing and any other dirt is usually washed with a solvent, and a sealing tape is applied to the fixing portion for the purpose of preventing the bond layer fixing the gauze to the screen frame from being dissolved by the solvent.
Such a construction is shown in Figure 2 of the accompanying drawings and is provided by fixing the edge 14a of gauze 14 to the surface of a gauze spreading portion 12 of a frame 10 for gauze stretching via bond 13, coating the upper side of bond 13 with a chemical tape 15, and applying sealant 16 to the inner edge with an adhesive agent which is not dissolved by a solvent, for instance, an acrylic adhesive agent.
However, in the known method for stretching a screen in a screen printing plate, since taping by means of paper tape or silver tape is required in addition to sealing to protect the fixing portion from solvent during the washing with the solvent, the work of spreading the screen is cumbersome and the spreading work is prevented from being automated.
Thus simplification of the work and reduction of the number of processes are desired.
According to the invention, there is provided a method for stretching a screen in a plate for screen printing wherein a screen is spread on a screen frame with an adhesive agent, said method comprising fixing said screen to said screen frame with an adhesive agent, and applying a photo-setting resin on the fixing portion of said screen and thereafter hardening the resin, thereby coating the fixing portion of said screen with a protective film for solvent washing.
In order that the invention may be better understood an embodiment thereof will now be described by way of example only and with reference to the accompanying drawings in which:
Figure 1 is an explanatory view showing an embodiment of the method for stretching a screen of the present invention; and
Figure 2 is an explanatory view showing a known method for stretching a screen.
Referring to the Figure, reference 1 is a screen frame which is formed by building front, rear, left and right side frames 2, 3, 4 and 5 in a rectangular shape. Each side frame 2, 3, 4, 5 is formed of a substantially square pipe and is integrally formed of an elastic metallic material which can provide a required tension to a screen 6 to be spread on the screen frame 1. Screen 6 is formed of gauze suitable for screen printing. Alternatively, the screen may be formed of a material of the same quality as gauze or other synthetic fibre or a mixture of materials.
In order to spread the screen 6 on the screen frame 1, the individual side frames 2, 3, 4 and 5 of screen frame 1 are inwardly pressed and are fixed while they are deformed. Then, after stretching screen 6 onto the deformed screen frame 1, the outer periphery 6a of screen 6 is fixed to the upper surfaces 2a, 3a, 4a and Sa of the individual side frames 2, 3, 4 and 5 by applying rubber bond 7 to the side of the side frames 2, 3, 4 and 5 of screen frame 1, and drying it. (However, in the drawing, the fixing state in the upper surfaces of side frames 4 and 5 is omitted.)
Thereafter, by applying ultraviolet-setting resin 8 on the upper side of the fixing portion by the bond 7 and hardening it by exposure to ultraviolet rays, a protective film 9 can be formed on the circumference of the fixing portion of screen 6 by the bond 7.
After the above process is completed, by releasing the pressure directed inwardly of the respective frames 2, 3, 4 and 5 of the screen frame 1, screen 6 having a predetermined tension is stretched and can be used as a plate for screen printing.
In addition, as the ultraviolet-setting resin 8, a resin having conditions such as chemical resistance and water resistance is selected and used which can protect the fixing portion of screen 6 by bond 7 from the solvent used in the washing after the screen printing.
Further, other photo-setting resins having similar properties can be used, and also protective film 9 can be formed by using other rapid-drying resins while achieving the same effect and action.
Accordingly, by forming protective film 9 by an ultra-violet-setting resin, the simplification of the formation work of protective film 9 of the fixing portion of screen 6 as well as the shortening of the work time and automation of the work can be accomplished. There is also an advantage that the fixing strength of the fixing portion of screen 6 by bond 7 can be increased by the coating of the protective film.
In accordance with the method of the present invention, the tensioning of a screen on a screen frame can be simplified and sped up, and the automatisation of the stretching work can be facilitated as well.
Claims (3)
1. A method for stretching a screen in a plate for screen printing wherein a screen is spread on a screen frame with an adhesive agent, said method comprising:
fixing said screen to said screen frame with an adhesive agent, and applying a photo-setting resin on the fixing portion of said screen and thereafter hardening the resin, thereby coating the fixing portion of said screen with a protective film for solvent washing.
2. A method as claimed in claim 1 wherein the fixing portion of said screen consists of a bond layer and said protective film consists of an ultravioletduring resin film.
3. A method as claimed in claim 1, substantially as hereinbefore described.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25341490A JPH04131242A (en) | 1990-09-21 | 1990-09-21 | Screen setting method in screen printing plate |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| GB9119950D0 GB9119950D0 (en) | 1991-10-30 |
| GB2249052A true GB2249052A (en) | 1992-04-29 |
| GB2249052B GB2249052B (en) | 1993-12-15 |
Family
ID=17251059
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB9119950A Expired - Fee Related GB2249052B (en) | 1990-09-21 | 1991-09-18 | A method for stretching a screen in a screen printing plate |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPH04131242A (en) |
| GB (1) | GB2249052B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6990900B2 (en) * | 2003-10-17 | 2006-01-31 | Anderson John T | Method and apparatus for stretching and mounting a screen printing screen |
| CN105599430A (en) * | 2015-12-17 | 2016-05-25 | 东莞市秦智工业设计有限公司 | SMT laser template |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102404944A (en) * | 2011-12-01 | 2012-04-04 | 昆山明创电子科技有限公司 | Fast adhesive sealing screen board |
-
1990
- 1990-09-21 JP JP25341490A patent/JPH04131242A/en active Pending
-
1991
- 1991-09-18 GB GB9119950A patent/GB2249052B/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6990900B2 (en) * | 2003-10-17 | 2006-01-31 | Anderson John T | Method and apparatus for stretching and mounting a screen printing screen |
| CN105599430A (en) * | 2015-12-17 | 2016-05-25 | 东莞市秦智工业设计有限公司 | SMT laser template |
Also Published As
| Publication number | Publication date |
|---|---|
| GB9119950D0 (en) | 1991-10-30 |
| JPH04131242A (en) | 1992-05-01 |
| GB2249052B (en) | 1993-12-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 19950918 |