KR20030011441A - The method of simultaneous ejection printing over two colour for jutting printed matter with epoxy resin - Google Patents

Abstract

PURPOSE: A multicolor simultaneous ejection printing method of a jutting printed matter using epoxy resin is provided to shorten execution processes that are required to be repeated several times according to the number of colors such as printing, drying and appliance washing, and develop marble pattern injection technology accordingly. CONSTITUTION: The multicolor simultaneous ejection printing method of a jutting printed matter using epoxy resin comprises the processes of preparing an injection printing machine comprising an epoxy solution charging tank, an epoxy pressing plate and a sheet roll support; perforating pipe holes having a required size on the bottom of the tank, and adhering injection pipes having a certain size to each of the pipe holes; mounting color separation frames that are fabricated to be separated per colors of a design to be presented on the tank; charging an epoxy solution weighed according to required quantities per colors into the separation frames respectively; vertically removing the separation frames from the tank; and obtaining a desired multicolor printed matter by operating the pressing plate.

Description

The method of simultaneous ejection printing over two color for jutting printed matter with epoxy resin

The present invention belongs to the field of printing technology to use a epoxy resin to protrude a certain pattern of the shape of a set of hemispherical epoxy eggs in order to obtain acupressure effect in the surface treatment of car handle cover, women's handbag skin.

Until now, the manual technique and the seal screen printing method have been used.However, in the manual process, the epoxy solution is injected into the syringe and injected into the grain, so the seal screen printing technique cannot be followed in terms of work speed and manpower. Seal screen printing has the effect of improving the commerciality compared to the manual work in the uniformity and productivity of epoxy egg size.However, due to the characteristics of epoxy resin, it requires a drying time of about 1 hour at the temperature of 60 ℃ ~ 80 ℃. Cannot use rotary seal printer for multi-color simultaneous printing available when using other printing inks.

Therefore, when printing more than two paints as protrusions by using epoxy resin, it is necessary to bear the disadvantage of the inconvenience of having to repeat the process of printing, drying, sealing screen plate as many times as the number of colors and consequently deterioration of productivity. It is true.

Development of multi-color simultaneous printing technology to shorten the process by performing once the disadvantages of the conventional seal screen printing technology, which requires repeated printing process such as printing, drying, and washing several times depending on the number of colors when printing by extrusion with epoxy resin Additional development of magical rendering technology using dynamic technology.

1 is a multi-color simultaneous injection printing process diagram

1. Prepare an injection press of the required size (hereinafter referred to as "injector").

The injection molding machine should be equipped with an epoxy solution filling tank (hereinafter referred to as a "tank") that simultaneously satisfies the volume of epoxy solution required and the initial insertion space of the epoxy press plate. The bottom of the tank is equipped with pipe attachment holes of desired quantity and size, and each pipe hole is fixed with pipes of fixed length (designer's design value) within 1.3mm of inner diameter. The inner diameter of the pipe should be limited within 1.3mm to prevent the stepless injection caused by the weight and pressure of the epoxy solution itself regardless of the pressure of the pressure plate when the pressure plate stops.

The lower part of the tank is equipped with a control pin to adjust the height of projecting the ejected epoxy egg.

2. The color separation frame (hereinafter referred to as "separation frame") is manufactured. The separation frame is the same as the inner standard of the tank, but the inner standard of the tank and the outer frame of the separation frame are easy to insert or detach from the tank. Allow tolerances between specifications.

The inner part of the separating frame is made to have a dividing line to coincide with the boundary between each color of the drawing designed for product production, and the lower part of the separating frame is made to be horizontal with the bottom surface of the tank.

It is recommended to use a brass or stainless steel sheet of about 1mm.

In case of making too thin or light material, the bottom of the tank and the bottom of the separation frame may not come in close contact with the epoxy solution.

3. When the injection molding machine and the separation frame are all prepared, perform injection printing in the following order.

end. Arrange the separation frame to be in close contact with the bottom of the tank.

If the bottom surface of the separation frame does not come into close contact with the surface of the injection hole in the tank, when the epoxy solution is filled, it flows into the blank to fill different colors. Can be printed.

I. 40 parts by weight of the curing agent (mixing ratio may vary depending on the epoxy solution manufacturer) to 100 parts by weight of the main solution in a colorless state with the required amount of epoxy solution, and then a small amount of flocculant is added to prevent spreading. Even though the reaction effect is different depending on the temperature, the addition amount is added according to the empirical experience of the practitioner since a certain value cannot be presented as a ratio with two decimal places or less).

All. Weigh the colorless epoxy solution, which has been completed in the "B" section, by color and mix each desired pigment. (At this time, if the work process of "I" and "C" is changed, the cohesive effect is different for each color, and the size and height of the hemispherical egg to be obtained are different for each color.)

la. Epoxy mixed with pigment is filled into the separation frame by color. At this time, care should be taken so that the surface of the filled epoxy solution is horizontal.

hemp. The separation frame is separated from the tank. In the tank where the separation frame is separated, the epoxy solution of each color separately filled according to the design does not mix with each other and maintains the shape of the design.

bar. Once the separation frame has been removed, the pressure plate is brought into close contact with the surface of the filled epoxy solution so that no air film is formed between the surface of the epoxy solution and the pressure plate. If an air film is formed, the part with the air film at the time of injection is uneven pressure, so the size of the injected kernel is not even. In order to prevent the formation of air film, the air hole is drilled at one end of the pressure plate, and the air hole is slowly pressed from the side without the air hole, and then the remaining air is discharged to the air hole and the air hole is sealed.

four. If the practitioner wants a marble pattern, remove the separation frame and push the appropriate size stick to the bottom of the tank perpendicularly to the boundary between the colors before sticking the pressure plate to the epoxy surface. Stir to skill.

Ah. Press printing to apply pressure to the tank. The pedestal should be able to move up and down to facilitate the entry and exit of the fabric.

character. Dry the injection print. Drying method is carried out by the method conventionally performed according to the epoxy solution.

In the hemispherical projection printing, the development process can be shortened by the development of multi-color simultaneous printing technology which cannot be performed by the conventional seal screen printing technology, thereby increasing the productivity and reducing the cost. The creation of marble-patterned injection printing technology has the effect of enhancing the quality of products.

Claims (2)

Method of injection printing multiple colors at the same time when printing protruding prints using epoxy resin. The method of claim 1, wherein the marble pattern is injection printed by the same method.