JPS599057A - Preparation of screen printing plate by laser beam - Google Patents

Abstract

PURPOSE:To efficiently form a screen printing plate having island-like image bodies by such an arrangement wherein grooves are formed by boring and cutting a plate material with a laser beam and image bodies are fixed by filling up grooves with filling material and a sheet of silk gauze is pasted to those image bodies and then the filling material in the grooves is removed. CONSTITUTION:Image patterns 10, 11, 12, etc. divided by grooves 4 are formed by drilling a plate material 2 (e.g., stainless steel plate, synthetic resin plate, etc.) by irradiating laser beam. Next, filling material 14 is filled in the groove 4 (e.g.; cement, vinyl acetate family resin) and image patterns are combined together by cooling and solidifying the filling material and they are fixed. Next, a sheet of silk gauze 15 is pasted to an image body composed of image patterns 10-12, etc. through adhesive 18, and after that, the filling material 14 previously filled is removed and grooves are recoverd and by this process, a screen printing plate is obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for making a screen printing plate using a laser beam. Plate-shaped (including film-shaped) particles can be synthesized into stainless steel, iron, aluminum, copper, copper alloys, other metals, rubber materials, synthetic resins, cloth, and paper. Impregnated with resin or rubber.

Or place the pasted material on a table bed.

A computer or a pantograph is operated to move a leather nozzle or a table bed according to the pattern to perforate and cut the pattern on the plate material to create an image body.

When cutting, the image body and the surrounding area must be left behind for an amount of ηIS, and the image loses its connection independently, becoming an island-like image body, and finally it is cut off and falls off. Or, if the design is complex, it will not fall off, but the purpose is to fill the groove with filler material and create a joint with the next one to fix it in place, in order to eliminate the unstable swing-like suspension.

To fix the cut groove, follow the cut groove of the laser nozzle and fill it with a fluid plastic material such as cement, gypsum, clay, or chain acid nylon resin.
Hot Melt Shellac Melt resin or low temperature melting alloy and fill it into the groove.

Cool and solidify. As a result, the unstable image body is connected to its neighbor and becomes a stable image body.

The image is fixed with a filling material that prevents it from falling off.

Bring the gauze or hanging line into contact. The materials used are tetsuta and tatami, which are stacked at right angles to each other.

Adhesive epoxy resin,
and others, welding or two-alloy brazing.

Leather can also be used for this. Alternatively, in an electrolytic plating bath, for example, nickel or copper plating is applied to the plate surface to bond it. Or for rubber plate materials.

Use a synthetic rubber adhesive with the trade name Koninbond G17.

After the bonding is completed, remove the filler described above.To explain this in an example, Figure 1 shows the plate material (2) and the laser (1).
) is an example of cutting (3). What is the plate material used (2)?

It is mainly thick, that is, it is thicker than a general emulsion screen plate.Although a thin plate is also possible, a thick plate is used in the illustrative example.

Things that require thick plates include three-dimensional printing of designs on building material wall plywood (gypsum board), raised designs on lacquerware and pottery, printing of resistive materials for electronics, and semi-conductor printing.
Used for paste etc.

The plate material used for thick printing does not necessarily have to be a hard material.In fact, if the printing material is hard or has a rough surface, a soft rubber material is suitable, and ideally it should fit well with the printing surface. It is true.

Conventionally, it was difficult to cut the soft phase into shapes, but it has become easier with the use of laser.

The synthetic resins (7) including fat are filled with the filling nostle (6), and the grooves (4) left by the cut (3) are followed, and the heat-softened resin (7) is filled and sealed. Fill in the groove (4).

Further, the grooves of the metal plate material are also melted and filled with hot melt or low-temperature melting alloy, and similarly rapidly cooled and solidified [7] to fill the grooves (4). If there are any gaps, pour in a low-concentration adhesive to ensure the effect.

For cutting, attach the second plate material (2) to the table top (8). Is it the laser nozzle (9) side to proceed with cutting?

Cutting (3) of the laser (1) proceeds by moving along the pattern (10) by tracing the original plate making drawing with a computer or a tablet graph (not shown) on the side of the table (8).

The plate material (2) is cut out as it is cut. That is.

It becomes a bottomless, penetrating groove (4). Because of this groove (4), a means for preventing the island pattern (11) from falling off is required at the portion of the image body where the island pattern (11) occurs, and a filler (5) is required.

When the island pattern (11) is, for example, a circle, the cut portion is divided into 2 to 3 sections, cutouts (3-A) are first made, and fillers (5-a) are filled.

Wait for it to solidify, then cut out the remaining part (3-B) and fill it too '1
i(5-b) is filled and fixed without disturbing the symbol position.

Further, in a place where the fine patterns (12) are crowded together, the pattern will not fall off but will become unstable. Such places are also filled with filling (
5) to maintain the whole structure.Once the cutting is finished, the gauze (,15) or hanging wire (a > 2) is used as a support to support the second plate.
Fune is a piece of unwoven gauze simply arranged with threads, and its functions and effects are largely the same as gauze. ) is used. The gauze (15) is the frame (1
7) Tensioned or unframed is also used.

The image body (1) that remains after the pattern holes (4) are cut out (3)
3) and then attach the gauze (15) and use an adhesive (18) such as ebogi/resin or low-temperature alloy wax.

Stainless steel gauze (
15), use nickel in advance.

Alternatively, copper plating is applied to the nickel base, or a non-conductive material such as copper is applied to the gauze (15) at the grooves (4) or pattern holes (14) so that it rises again.

Or, re-melt the hot iron (21) or soften the gauze (15) to prevent electricity from being applied to the plating, and overlay the gauze (15) that is in contact with the 9-image body (13) and (λD) together. and join them together.

For the 4th type of print using sticky material and plaster for filling (5),
It is also possible to weld the gauze (]5) to stainless steel or weld it with alloy solder.

Once the gauze and image body have been bonded, there is no need for fixation of the filler, thus eliminating this.

〇 Thermoplastic resins and hot melts are softened by pouring hot air to prevent them from falling down the grooves, and finally wiped off with a solvent such as thinner.

In the case of low-temperature molten alloys, they are made into plates by applying heat, remelting them, causing them to fall, and sweeping them away with a bluff.

[Brief explanation of drawings]

FIG. 1 is a schematic perspective view showing how a plate material is cut out by a laser beam. Figure 2 is a schematic perspective view showing the unstable groove fixing situation of the island pattern and the dense pattern. FIG. 3 is a perspective view showing the joining of the gauze and the image body; FIG. 4 is a perspective view showing the state in which the hanging line is tensioned to the frame and joined to the image body. FIG. 5 is a sectional view showing the joining of one image body and gauze. FIG. 6 is a cross-sectional view of the state in which the plastic filler is redissolved at the time of bonding the 5-image body and the gauze. FIG. 7 is a cross-sectional view showing a state in which the image body of FIG. 6 is plated and bonded. FIG. 8 is a sectional view showing a situation in which the filler has been removed from the groove. Figure number explanation 1 Leather. 2. Plate material. 3. Disconnection. 4 Groove. 5 Filling material. 6 - Filler nozzle. 8... Bet. 9 Leather nozzle. 10...Design. 11 ・Island pattern. 12 Dense design. 15. Gauze. 16. Suspension line. 18. Bonding agent. Myo 2 □□□ Chi 3 Kaimo 4

Claims (1)

[Claims] Laser light is applied to plate materials, that is, plate-shaped materials such as stainless steel, iron, aluminum, copper, copper alloys, and other metals, or rubber coatings, synthetic resin materials, cloth, and paper. Impregnated with synthetic resin or comb material. Or place the pasted material on a table bed. A combination coater or pantograph is operated to operate a laser nozzle or a tabletop according to the pattern to perforate and cut the pattern on the plate material to form one image. Fill the grooves created by cutting with or without following the nozzle with a fluidized plastic material such as cement gypsum or clay. Filling is performed by making a liquid form of alcoholic acid or boric acid vinyl resin, hot melt, or low-temperature melting alloy. This is cooled or solidified, and the grooves are fixed on the image body.
The hanging wires are brought into contact and bonded using an adhesive, epoxy resin, etc., or by welding, alloy brazing, or overlay plating. A method of making screen printing plates using laser beams.