KR850000423B1 - Penmanship handwriting panel - Google Patents

Abstract

Black oil paint is spread on a pasteborad, a wood printing plate, or a synthetic resin plate. The plate is dried. Water is added to polyvinyl alcohol at 1160-1220 ml per 100 g of polyvinyl alcohol at 80-100≰C form a solution. The same quantity of acryl emulsion is mixed into the solution. The aqueous solution, which contains a silica compound, is mixed into the above solution. The final mixed solution is spread on the plate.

Description

How to make calligraphic writing board

The present invention relates to a method of manufacturing a semi-permanent calligraphic writing board, which is written on a plate using water, and black letters appear as if written with ink, and then dried again when the water is dried.

In modern life where emotions and hobbies are diversified, as the population of calligraphy is rapidly increasing, awareness of this is increasing. However, calligraphy was not easy in a situation where there was not enough calligraphy or a large space. Therefore, calligraphic writing utensils have been developed and used in response to the demand of consumers, which are more suitable for simple practice by themselves with a small space and simple tools and can have the effect of many repetitive exercises.

Conventional writing instruments such as cobalt salt or Kaven black were applied to synthetic resin plates, and the letters appeared dark when the letters were written with water and then returned to their original form when dried. In the case of using salt, white letters appear on the blue plate, so it is sensationally different from the color of the ink, which is insufficient for practice, and the letters appearing even when using Kaven Black are blurry and semi-permanent.

In particular, the Korean patent publication (Notice No. 82-2363) applied a water-soluble black ink and immersed it in copper sulfate solution to make a blackboard, and a white plate made of magnesium hydroxide was applied on a blackboard to dry the practice board. This is more advanced than the conventional one, but because it is made using magnesium hydroxide, the transparency of the text after writing with water is less than the method of the present invention using silicon dioxide (SiO ₂ ). It was not so high and the manufacturing method was relatively complicated.

The present invention is a method of manufacturing a calligraphic writing board that is applied to a black plate by applying a black oil-based table to the plate in order to remove the drawbacks of the conventional writing instruments, mixed with polyvinyl alcohol and the adhesive of acrylic emulsion in solution silicon dioxide The purpose is to provide.

The present invention is described in detail as follows.

The present invention is coated with a black oil paint on a cardboard, wooden board or synthetic resin board and dried, and then mixed with about 1,160-1,220ml of water in 100g of polyvinyl alcohol and stirred while heating to 80˚-100 ℃ to be sufficiently dissolved and the same amount of the solution Prepare an acryl emulsion (polymerization degree of 10-500,000) separately and add about 3,400-3,700 ml of water to 1 kg of silicon dioxide at room temperature, then stir and mix thoroughly, and mix the mixed solution of polyvinyl alcohol and acrylic emulsion about 2,000-2,200 ml. It is a method of manufacturing a calligraphic writing board which is taken and mixed well in the silicon dioxide solution and the final mixed solution is applied to the plate coated with a silk screen printing method.

The present invention will be described in more detail. First, a colored (especially black) oil paint is applied to a cardboard, a wooden board or a synthetic resin board and dried sufficiently.

Then, about 1.160-1,220 ml of water is added per 100 g of polyvinyl alcohol having a saponification degree of 97% or more and a polymerization degree of 1,700 or more, and the mixture is stirred while heating to a temperature of 80 ° C-100 ° C to allow sufficient mixing. At this time, since the degree of saponification of polyvinyl alcohol is insoluble at room temperature, the solution is heated to 80 ° C.-100 ° C.

In addition, an acrylic emulsion having a polymerization degree of 100,000 to 500,000, a solid content of about 45-55%, and a viscosity of 1,500-3,000 CPS is roughly the same amount as the polyvinyl alcohol solution and mixed with the polyvinyl alcohol solution.

The melamine resin may be added to the non-acrylic emulsion, but when the melamine resin is added, a catalyst is also required, and the acrylic emulsion may be more effective because it is water-resistant after drying at a high temperature (100-110C).

Meanwhile, water of about 3,400-3,700 ml is added to 1 kg of high-purity silicon dioxide powder, and the mixture is sufficiently stirred and mixed at room temperature, and about 2,000-2,200 ml of the mixed solution of the polyvinyl alcohol and acrylic emulsion is added to the solution and mixed well while stirring.

The final mixed solution thus mixed is applied to a black plate coated with the paint by a conventional silk screen printing method, and dried sufficiently at room temperature to obtain a good product.

In particular, the silicon dioxide used at this time is a very high purity of 99.5% or more is used, the higher the purity is better.

In addition, when a small amount of ethylene vinyl acetate (EVA) is added to the mixed solution of polyvinyl alcohol and acrylic emulsion used as an adhesive, and NH ₄ OH is added little by little, polymerization of the adhesive is increased. Is evenly bonded to the surface. At this time, the thickener used is preferably used in an amount corresponding to about 1.5-3.5% of the polyvinyl alcohol solution to the final mixed solution, and the NH ₄ OH is gradually added to the thickening effect.

Since the wet plate prepared according to the method of the present invention is a state in which fine silicon dioxide powder of irregularities is uniformly adhered to the black surface, a light gray plate is formed, and the silicon dioxide in the coated state has a diffuse reflection effect but with water When writing, the surface of the writing area has the effect of flat glass against light due to water, so the light is transmitted without being diffusely reflected, resulting in transparency, and the black applied underneath appears. Appear.

Such a method of the present invention will be described in detail with reference to Examples.

Example 1

The black oily ink was applied to a synthetic resin board and dried at room temperature (17 ° C).

100 g of polyvinyl alcohol (99% soap degree, polymerization degree 2,000) and 1,160 ml of water are mixed at 80 DEG C to be liquefied, and 1,160 ml of an acrylic emulsion (polymerization degree of 200,000, 48% solids, viscosity 1,500 CPS) is mixed.

Then, 3400 ml of water is added to 1 kg of silicon dioxide (purity 99.9%) powder, and the solution is sufficiently mixed and solutiond. Then, 2,000 ml of the polyvinyl alcohol and acrylic emulsion mixed solution are added and mixed well, and the final mixed solution is oil-based ink. Was applied by a silkscreen printing method to the coated black plate was sufficiently dried (about 1 hour).

Example 2

100 g of polyvinyl alcohol (98% soap, degree of polymerization 2,000) and 1,180 ml of water are mixed well at 90 ° C, and 1,180 ml of acrylic emulsion (polymerization degree 400,000, 50% solids, viscosity 2,000CPS) is mixed to dissolve 2,040 ml of this mixed solution. 1 kg of silicon powder was added to a solution prepared by adding 3,500 ml of water, followed by stirring and mixing. The final solution was applied in the same manner as in Example 1.

Example 3

100 g of polyvinyl alcohol (99% soap degree, polymerization degree 2,000) and 1,220 ml of water are mixed and liquefied at 100 ° C, and 1,220 ml of acrylic emulsion (polymerization degree 400,000, 50% solids, viscosity 2,500 CPS) is mixed with the solution. 2,100 ml of the solution was added to the solution made by adding 3,600 ml of water to 1 kg of silicon dioxide powder, followed by stirring and mixing. The final mixed solution was applied in the same manner as in Example 1.

Example 4

100 g of polyvinyl alcohol (99.5% of soap, 2,000 degree of polymerization) and 1,200 ml of water are mixed at 95 ° C. for solution, and 1,200 ml of acrylic emulsion (400,000 in polymerization, 50% of solidity, 3,000 CPS) is mixed with the solution. 2,160 ml of this mixed solution was added to a solution made by adding 3,500 ml of water to 1 kg of silicon dioxide alone, and the mixture was stirred well. Then, the final solution was applied in the same manner as in Example 1.

Example 5

25 ml of ethylene vinyl acetate (approximately 2% in polyvinyl alcohol solution) was added to the polyvinyl alcohol and acryl emulsion mixed solution of Example 3, and the same procedure as in Example 3 was carried out while adding a small amount of NH ₄ OH.

Example 6

25 ml of ethylene vinyl acetate (2% solution in polyvinyl alcohol solution) was added to the polyvinyl alcohol and acryl emulsion mixture solution of Example 4, and the mixture was added in the same manner as in Example 4, but a small amount of NH ₄ OH was added to the final mixture. Was carried out.

Example 7

100 g of polyvinyl alcohol (99.5% of degree of soap, 2,000 degree of polymerization) and 1,050 ml of water are mixed at 90 ° C. for solution, and 1,150 ml of aclimul (500,000 degree of polymerization, 52% of solid content, 3,000 CPS of viscosity) is mixed with this solution. 2,200 ml of this solution was taken, 3,550 ml of water was added to 1 kg of silicon dioxide powder, and the mixture was added to the resulting solution, followed by stirring and mixing. The final mixture was applied in the same manner as in Example 1.

As described above, when writing letters with water on the wet plate produced by the method according to the present invention, very clear black letters appear when the water is dried and the letters are erased and reduced to the color of the original wet plate. Is usually maintained for 2-3 minutes and this time can be controlled by the excess of the resin component during the application process.

In addition, since the adhesive used is strong in water resistance, it can be used semi-permanently if there is no damage to the surface due to contact with solid materials, and it is possible to enjoy hobby easily while maintaining the cleanliness of the surroundings, It's effective and you can feel confident in calligraphy with casual repetition.

Moreover, not only has the advantage of being easy to use in a small space, but it is also suitable for calligraphy basic learners who require repeated practice in calligraphy.

Claims (1)

After application of characteristic oily chart on cardboard, wooden board, and synthetic resin board, completely dry, add about 1,160-1,220ml of water per 100g of polyvinyl alcohol, and liquefy it at a temperature of 80 ℃ -100 ℃. The mixture was mixed with 2,000-2,200 ml of water, and the solution was added to a solution containing about 3,400-3,700 ml of water and 1 kg of silica compound at room temperature, followed by stirring and mixing. The final mixed solution was coated with the black paint. Method for producing a calligraphic wet plate, characterized in that the coating.