阅读说明：本技术 一种丝印网版的制作方法 (Manufacturing method of silk-screen printing plate ) 是由 吴言海 石大恒 郭权龙 于 2019-10-04 设计创作，主要内容包括：本发明公开了一种丝印网版的制作方法,主要包括下述步骤：一、架网框上纱；二、将纬线、经纱上夹具；三、测试经线和纬线的张力；四、网框刷胶；五、割网纱；六、网版脱脂；七、上感光浆曝光；八、冲版显影；九、检验；十、烘烤；步骤七的具体方法为：将烘烤干净的网版固定,把调配好的感光浆用上浆器均匀涂在网版两面,并放入烤箱烘烤,根据膜厚要求重复2-3次,感光胶膜厚12um±1um；将菲林水平旋转30°-45°粘在网版上,放入晒网机中曝光。本发明在原有制作丝印网版的方法基础上,上感光浆时将菲林水平旋转,使得原菲林上图案的直边不再与经线或纬线形成夹角,而是和经线、纬线平行或垂直,后续推动油墨进行印刷时,油墨能顺畅地印在玻璃上。(The invention discloses a method for manufacturing a silk-screen printing plate, which mainly comprises the following steps: firstly, yarn is arranged on a net frame; secondly, clamping the weft and the warp; thirdly, testing the tension of the warp and the weft; fourthly, brushing glue on the screen frame; fifthly, cutting the screen; sixthly, degreasing the screen printing plate; seventhly, exposing the photosensitive paste; eighthly, developing the plate; ninthly, checking; tenthly, baking; the concrete method of the seventh step is as follows: fixing the baked screen printing plate, uniformly coating the prepared photosensitive paste on two surfaces of the screen printing plate by using a sizing device, baking in an oven, repeating for 2-3 times according to the film thickness requirement, wherein the film thickness of the photosensitive paste is 12 microns +/-1 micron; the film is horizontally rotated by 30-45 degrees and stuck on the screen printing plate, and then is put into a screen printing machine for exposure. On the basis of the original method for manufacturing the screen printing plate, the film is horizontally rotated when photosensitive paste is applied, so that the straight edges of the patterns on the original film do not form included angles with the warps or the wefts any more but are parallel or perpendicular to the warps and the wefts, and when ink is subsequently pushed to print, the ink can be smoothly printed on glass.)

1. A method for manufacturing a silk screen printing plate mainly comprises the following steps: the method comprises the following steps: yarn is arranged on the net frame; step two: clamping the weft and the warp; step three: testing the tension of the warp and weft; step four: brushing glue on the screen frame; step five: cutting the gauze; step six: degreasing a screen printing plate; step seven: exposing the photosensitive paste; step eight: developing; step nine: checking; step ten: baking; the method is characterized in that: the concrete method of the seventh step is as follows: fixing the baked screen printing plate, uniformly coating the prepared photosensitive paste on two surfaces of the screen printing plate by using a sizing device, baking in an oven, repeating for 2-3 times according to the film thickness requirement, wherein the film thickness of the photosensitive paste is 12 microns +/-1 micron; the film is horizontally rotated by 30-45 degrees and stuck on the screen printing plate, and then is put into a screen printing machine for exposure.

2. The method for manufacturing a silk screen printing plate as claimed in claim 1, wherein: the pattern of the film contains straight edges.

Technical Field

The invention relates to a manufacturing method of a silk-screen printing plate, and belongs to the technical field of glass printing.

Background

At present, the glass cover plate is printed in the industry by utilizing a mode of manufacturing a silk-screen printing plate by using a film, and the pattern of the manufactured screen printing plate is provided with a straight edge which is parallel to the edge of the screen printing plate. The silk screen on the screen printing plate is composed of warps and wefts, the warps and the wefts are not parallel to the edges of the screen printing plate, but form an included angle of 30-45 degrees with the straight edges of the screen printing plate, so that the straight edges of the patterns and the warps and the wefts also form the included angle. When printing is carried out, the scraper pushes the ink to enable the ink to penetrate through the screen printing plate to be printed on the glass, the ink is thick, the ink at the included angle part cannot penetrate through, and the defect that the inner white edge is formed at the position, covered with the ink, on the glass is caused.

Disclosure of Invention

The invention aims to provide a method for manufacturing a silk-screen printing plate, which solves the problem of the bad phenomenon of inner white edges when straight-edge patterns are printed.

The technical scheme of the invention is as follows: a method for manufacturing a silk screen printing plate mainly comprises the following steps: the method comprises the following steps: yarn is arranged on the net frame; step two: clamping the weft and the warp; step three: testing the tension of the warp and weft; step four: brushing glue on the screen printing plate; step five: cutting the gauze; step six: degreasing a screen printing plate; step seven: exposing the photosensitive paste; step eight: developing; step nine: checking; step ten: baking; the concrete method of the seventh step is as follows: fixing the baked screen printing plate, uniformly coating the prepared photosensitive paste on two surfaces of the screen printing plate by using a sizing device, baking in an oven, repeating for 2-3 times according to the film thickness requirement, wherein the film thickness of the photosensitive paste is 12 microns +/-1 micron; the film is horizontally rotated by 30-45 degrees and stuck on the screen printing plate, and then is put into a screen printing machine for exposure.

The pattern of the film contains straight edges.

The original method for manufacturing the silk-screen printing plate is improved, the film is horizontally rotated when the photosensitive paste is exposed, so that the straight edge in the straight edge-carrying pattern on the original film does not form an included angle with the warp or the weft any more but is parallel or perpendicular to the warp and the weft, and when the ink is subsequently pushed to print, the ink can be smoothly printed on the glass.

Drawings

FIG. 1 is a schematic diagram of a conventional screen printing plate;

FIG. 2 is an enlarged view of a portion A of a conventional screen printing plate;

FIG. 3 is a schematic view of a silk screen printing plate according to the present invention.

Detailed Description

The method comprises the following steps: and (3) yarn feeding of a net frame: putting a large screen frame on a machine table, wherein one large screen frame comprises a plurality of screen frames, and the screen yarns are Japanese imported NBC screen yarns; putting the gauze wefts into a weft clamp and leveling;

step two: and (3) putting the weft and the warp on a clamp: firstly, the weft is provided with a clamp, and then the warp is provided with a clamp; the warp threads and the weft threads are vertical, and the warp threads and the weft threads form an angle of 30-45 degrees with the net frame respectively;

step three: and testing tension: the tension is pulled to the required tension, and whether the tension is reached is measured after 5 minutes; according to the difference value between the measured tension and the required tension, the required tension is pulled again;

step four: brushing glue on the screen frame: brushing resin glue on four sides of the net frame with the drawn warps and wefts; standing for 1-2min, and scraping and firmly adhering the glue and the screen frame by using a scraping glue;

step five: cutting the gauze: after the glue scraping is finished, standing for 2 hours, drying the glue, and cutting the glue from the gaps among the screen frames by using a blade; standing the cut screen frame for 24h to obtain a screen printing plate;

step six: degreasing a screen printing plate: soaking the new screen plate in water, and cleaning the new screen plate by using a degreasing agent; blowing the screen printing plate clean by a water gun, and putting the screen printing plate into an oven for drying;

step seven: and (3) applying photosensitive paste and exposing: fixing the baked screen printing plate, uniformly coating the prepared photosensitive paste on two surfaces of the screen printing plate by using a sizing device, baking in an oven, repeating for 2-3 times according to the film thickness requirement, and controlling the film thickness of the photosensitive paste to be 12 microns +/-1 micron; horizontally rotating the film by 30-45 degrees relative to the screen printing plate, adhering the film on the screen printing plate, and placing the film in a screen printing machine for exposure;

step eight: plate punching and developing: soaking the exposed screen printing plate in a clear water tank for 1-2 minutes, and then flushing and developing by using a water gun at a distance of 50 cm; drying the developed screen plate by using a flushing gun, drying and carrying out secondary exposure;

step nine: and (4) checking: after exposure, the screen plate is taken out and put into a screen plate inspection table to inspect the light, and light leakage points are sealed by screen sealing slurry.

Step ten: baking: putting the qualified screen printing plate into an oven for baking; and (5) pasting a label corresponding to the pattern mark of the screen printing plate on the screen printing plate to obtain the screen printing plate.

As shown in fig. 1, the conventional screen printing plate is manufactured by a method that four sides of a film 1 are parallel to four sides of a screen frame, warps and wefts form 30-45 degrees with the screen frame, a clearance area 3 is arranged in the middle of the film 1, and printing patterns 2 are arranged around the clearance area 3. When the silk-screen printing plate manufactured by the existing manufacturing method is used for printing, as shown in figure 2, the scraper pushes the printing ink to print on the printing pattern 2, when an included angle 4 formed by the warps, the wefts and the straight line of the printing pattern 2 is met, the printing ink is difficult to permeate on the glass below, and the part has no printing ink, so that an inner white edge is formed.

As shown in figure 3, after the film 1 is horizontally rotated by 30-45 degrees relative to the screen, the straight line of the printed pattern 2 is parallel or vertical to the longitude line and the latitude line, and no included angle 4 is formed. When the silk-screen printing plate prepared by the invention is used for printing, the ink can be smoothly printed on the glass below without an included angle 7, and an inner white edge is not generated any more.

The invention is suitable for films with patterns containing straight lines.