KR20000073622A - Aaaaa - Google Patents

Abstract

PURPOSE: An UV-coated blackboard is provided which is capable of attaching and detaching to the wall and an aqueous marker pen is available against the blackboard. CONSTITUTION: The UV-coated blackboard is produced by a process comprising the steps of; roll-pressing a mixture comprising 95 wt% of poly vinyl, 3 wt% of a DOP plasticizer, 1 wt% of titanium, 1 wt% of a stabilizer, and a green or a white pigment against a front side of a board (1) at 180-200°C to form a PVC-coated layer (2) having a thickness of 0.12-0.3 mm; printing particular shapes to the surface of the PVC-coated layer (2) and then drying; spreading a glaze comprising 99 wt% of an UV resin, 0.5 wt% of a curing agent, 0.5 wt% of a leveling on the PVC-coated layer (20), wherein the spread glaze has a thickness of 20-30 μm; curing and drying the resultant using ultraviolet radiation at 100-130°C to form the UV-coated layer (4). The back side of the board is treated by a polyurethane adhesive.

Description

Wall part, manufacturing method of U-coated resin blackboard that can be detached {AAAAA}

The present invention relates to a method of manufacturing a UV coated resin blackboard that can be used with an aqueous marker pen, and more particularly, in a white blackboard or Hokkaika painted on an MDF plate, such as a conventional white and green blackboard, or a general school and educational institution. The present invention relates to a method of manufacturing a blackboard that can be removed and attached to any wall conveniently and improves handwriting and eraseability by improving the manufacturing method of the painted blackboard.

In general, the white board is coated with a smooth gloss coating to improve eraseability. The board is slippery, so the user's fonts are not properly written and it does not prevent the reflection of light, causing visual fatigue and causing astigmatism during long-term use. As a matter of course, it was only possible to assemble it with an aluminum frame and hang it on a wall or use it on a moving stand.

In addition, green blackboards and black blackboards used in schools and educational institutions are also being replaced by blackboards that can use liquid chalk due to the pollution of chalk powder.

However, in order to solve the waste of resources and budgetary problems that occur in the process of replacing the existing blackboard, it is the basic purpose of the present invention to easily attach the board to the current state of the board at low cost without discarding the existing blackboard. .

In addition, recently, there is a method of adding a chalk-colored iron plate on the surface of the existing wooden board, but because of the flexibility or elasticity, which is a disadvantage of the iron plate itself, the expansion coefficient due to the bending phenomenon and the temperature difference between the wood and the iron plate is unstable. Pulmonary lesions occur that occur frequently or fall off.

Therefore, the present invention removes the cause of eye fatigue and astigmatism due to the reflection of light in consideration of all the problems of the conventional blackboards as described above, the user's font can be written accurately and excellent elasticity of the surface of any wall or existing blackboard It is the purpose of the manufacturing method of the UV coating resin blackboard which is easy to attach to the climate or temperature difference is not described in detail with reference to the accompanying drawings as follows.

Base material (1) of a certain thickness, that is, a mixture of white or green pigments of 95% by weight of polyvinyl, 3% by weight of DOP plasticizer, 1% by weight of titanium, and 1% by weight of stabilizer on a leather plate Roll-compressed to a thickness of 0.12 to 0.3mm at the upper surface of 180 to 200 ℃ to form a PVC coating layer (2) and by printing silk or gravure of a specific shape on the surface (3) and dried at room temperature for 30 to 40 minutes UV-coating layer (4) after the emulsion mixed at a ratio of 99% by weight of ULTRA VIOLET resin, 0.5% by weight of curing agent, and 0.5% by weight of levering is 20 to 40 µC, and then cured and dried for 20 to 30 minutes with UV at 100 to 130 ° C. It is a method of manufacturing a UV-coated resin blackboard that can be used, characterized in that the marker pen made.

In the drawings, reference numeral 5 denotes a reinforcing material attached by placing an adhesive on the back of the base material 1, and 6 is attached to protect the adhesive during transportation and storage, and a species for easy removal and attachment during use. As described above, the present invention is made by painting the existing MDF plate with aluminum foil and aluminum rim, which is heavy and glossy and visually impedes, improves the inconvenience of transportation and is expensive, and can be easily removed from the wall anywhere. In addition to the advantages of being attachable, light, well written and erased, the price is low, so it can be used as a memo board or a learning board for students. can do.

Missing technical challenges for invention

1 is a partial cross-sectional view showing the process of manufacturing a blackboard of the present invention

※ Explanation of symbols for main parts of drawing

One). Base material (pvc foam leather) 2). PVC sheet

3). Printed layer 4). U, V coating layer

5). Adhesive 6). Protective tape

Missing configuration and action of the invention

Missing Effect of Invention

Claims (1)

93 to 96% by weight of polyvinyl chloride, 2 to 6% by weight of DOP plasticizer, 1 to 2% by weight of titanium, 1 to 2% by weight of stabilizer, and a mixture of green pigments and white pigments in a proportion, respectively. Roll-pressed at a thickness of 0.12 to 0.3 mm at 170-220 ° C. to form a PVC coating layer (2), and silk or gravure printing a specific shape on the surface thereof, and drying at room temperature for 30 to 50 minutes (3). 97-99 weight% of ULTRA VIOLET resin and 0.3-1 weight% of hardening | curing agents on it. A method for producing a U.V coated resin board comprising the U.V coating layer (4) formed by hardening and drying with an ultraviolet ray of 100 to 150 ° C after mixing 20 to 50 mu of a liquid mixed at a rate of 0.5 to 1% by weight.