KR20090042101A - A manufacturing method of a negative ion chalk and a negative ion chalk - Google Patents

Abstract

Method for producing anionic chalk and anionic chalk according to the present invention are stearic acid palm, alcoholic group Leocol, low molecular water soluble type polyethylene glycol, water soluble type polyethylene glycol, propylene water soluble type emulsifier, water soluble type stabilizer, ceramic, titanium dioxide It is a manufacturing method which is made by mixing anatase, titanium dioxide USA R, and water-soluble yellow color powder, stirring, extrusion molding, and anion chalk accordingly, which are beneficial to health, such as promoting blood circulation by release of anions. It has a dot, does not generate dust, is hydrophilic and can be easily erased and is compatible with all boards.

Description

A manufacturing method of a negative ion chalk and a negative ion chalk}

The present invention relates to a method of manufacturing anion chalk and anion chalk, and more particularly, the anion is emitted without dust generation, which is good for health, is clear and smooth writing, excellent writing feeling, and can be easily erased after writing. The present invention relates to a method of manufacturing anion chalk and anion chalk that are compatible with all kinds of boards such as whiteboards and blackboards.

In general, when looking at writing instruments used for writing on boards such as whiteboards or blackboards for lectures, there is chalk, which is used as writing instruments for writing on a blackboard, after kneading calcium sulfate or calcium carbonate powder with water, It is generally used extensively as it was poured into a mold and molded.

Next, a white pen marker pen is used. The marker pen is made of an organic solvent such as acetone, ethanol, and toluene component.

In the case of the chalk, the solidified calcium sulfate or calcium carbonate powder, when written on the blackboard, dust is generated by friction, and even when the written letters are erased with an eraser, a large amount of dust is generated to contaminate indoor air. Inhalation into the body through the respiratory tract causes disease.

In addition, since the chalk is a solid material having high hardness, the chalk is clearly written only by pressing it on the blackboard with a large force, thereby not only causing a disease in the user's arm joint, but also having a poor writing feeling. In addition, since the scratches on the blackboard damage the painted surface of the blackboard, the life of the blackboard is shortened, and the blackboard is frequently replaced, resulting in waste of resources, and even if erased with an eraser, the blackboard becomes cloudy. There was the inconvenience of having to erase the eraser several times. And there was a problem that can not be used compatible with other types of boards such as white boards other than the blackboard.

In addition, in the case of a whiteboard marker pen, since it is made of fast-drying organic solvents such as acetone, ethanol, and toluene components, there is a problem of causing a user's headache due to odors peculiar to organic solvents. There is a problem that does not erase well.

In addition, the organic solvents continue to cause a chemical reaction on the surface of the whiteboard to dissolve the coating film to remove it, thereby causing scratches, and the ink of the marker pen remains on the scratches, shortening the life of the whiteboard. There is a problem. In addition, when writing on a white board, the writing feeling is bad because it is too slippery to write as desired, and there is a problem in that it is not compatible with other types of boards such as a blackboard.

The method for producing anionic chalk according to the present invention is stearic acid palm, alcoholic group Leocol, low molecular weight polyethylene glycol, water soluble type polyethylene glycol, propylene water soluble type emulsifier, water soluble type stabilizer, ceramic, titanium dioxide anatase, titanium It consists of a stirring step of mixing and heating the powder of the oxide USA R, water-soluble yellow color, and the extrusion molding step of extrusion molding the agitated mixed raw materials into an extruder having an extrusion head at one end,

The extrusion molding step is a first feed step of transferring the stirred mixed raw material in the 25 ℃ ~ 95 ℃ state and conveyed toward the extrusion head, and compression of the mixed raw material conveyed in the first transfer step at 55 ℃ ~ 70 ℃ A second conveyance step of discharging the molded solid material while gradually lowering the temperature by passing the molding mold formed in the extrusion head, and a first cooling process of gradually cooling the discharged solid material in a vacuum state of 15 ° C to 35 ° C. And a fourth cooling process of cooling the solid material that has undergone the first cooling process through a conveyor shower, wherein the anion chalk according to the present invention is formed by the manufacturing method.

According to the present invention, the negative ions are released, which is beneficial for health, such as promoting blood circulation, and since they are written on the board like crayons, they can be easily written with a small force, and the writing feeling is soft. In addition, since the board does not cause friction, scratches do not occur on the board surface, thereby extending the life of the board. In addition, since there is no dust generation, it is hydrophilic so that it can be easily erased with a cloth absorbed by water so that dust does not occur even when erased, it is possible to prevent environmental pollution and help the user's health. In addition, the present invention has the effect that can be used compatible with all boards, such as a blackboard, whiteboard.

Hereinafter, looking at the manufacturing method and configuration of the present invention for achieving the above object.

In the present invention, not only ions are generated, but dust is not generated, so that it does not harm the health, can be erased well, and can be easily washed even on clothes, and the board has excellent compatibility.

To this end, in the present invention, a manufacturing method is made as follows.

Stearic acid palm, alcoholic leocol, low molecular weight water soluble polyethylene glycol, water soluble polyethylene glycol, propylene water soluble emulsifier, water soluble stabilizer, ceramic, titanium dioxide anatase, titanium dioxide USA R, It consists of a stirring step of mixing and heating the water-soluble type of yellow color powder, and the extrusion molding step of extrusion molding the agitated mixed raw materials into an extruder having an extrusion head at one end.

In the extrusion molding step, the mixed raw material conveyed in the first conveying step and the first conveying step are transported to the extrusion head by stirring the stirred mixed raw material at 25 ° C. to 95 ° C. and compressed at 55 ° C. to 70 ° C. A second transfer step of discharging the shaped solids while gradually lowering the temperature by passing the molding mold formed in the extrusion head; and a first cooling process of gradually cooling the discharged solids in a vacuum at 15 ° C to 35 ° C and the It consists of a second cooling process for cooling the solids undergoing the first cooling process through a conveyor shower.

The reason for gradually lowering the temperature in the second transfer step is to solidify without sudden occurrence of cracks. In the first cooling process, gradually cooling in a vacuum state is oxidized before solids are completely solidified, causing problems such as cracks. This is to prevent this from happening.

The content of the mixture is preferably adjusted as follows.

5-20% by weight stearic acid palm, 7-10% by weight of alcohol group Leocol, 2-15% by weight of water-soluble stabilizer, 2-23% by weight of low molecular water-soluble type polyethylene glycol, 0.5% by weight of water-soluble polyethylene glycol -5 wt%, propylene water-soluble type emulsifier 0.3-10 wt%, ceramic 1-15 wt%, titanium dioxide anatase 10-50 wt%, titanium dioxide USA R 9-20 wt%, water-soluble type yellow color powder 1 It is formulated at -3 weight%.

The stearic acid palm is preferably stearic acid palm 1837-1838 type, the water-soluble type stabilizer is preferably LA20 (product of SSF), the alcohol group Leo Cole is alcohol group Leocol SL60 to SL80 (American Trade Co., Ltd.) Product), the low molecular water-soluble type polyethylene glycol is preferably polyethylene glycol 100 to 4000, the water-soluble type polyethylene glycol is preferably polyethylene glycol 4200 to 8000 MS, and the ceramic is preferably an illite ceramic 325 mesh type.

The stearic acid palm is used as crayons, ink raw materials, cosmetic raw materials, when writing on the board with the present invention, it is a kind of fatty acid to soften the role of writing to improve the writing feeling, and to maintain proper hardness and formability .

When the stearic acid palm is contained too much, the hardness is increased and the writing property is lowered. If it is contained too little, the moldability is too low so that the moldability is poor. It was.

Alcoholic Leocol, LA20 Water Soluble Type Stabilizer, Propylene Water Soluble Type Emulsifier is an emulsifier, which reinforces the non-mixing properties according to heating conditions and plays a decisive role in helping the mixture to intermix. And elasticity and ductility, and when the alcohol group Leocol 7-10% by weight, water-soluble stabilizer 2-15% by weight, propylene water-soluble type emulsifier 0.3-10% by weight, the function as an emulsifier was the best.

The low molecular weight water-soluble polyethylene glycol and the water-soluble type polyethylene glycol are intended to maximize hydrophilicity so that they can be easily erased with a wet towel after writing, and the low molecular water-soluble type polyethylene glycol 100 to 4000 and the polyethylene glycol 4200 to 8000 MS are mixed to obtain hydrophilic properties. Maximization is possible. In addition, when the board is erased with an eraser, there is an easy dissolution of the board by simply placing the eraser in water. The low molecular weight water-soluble type polyethylene glycol is 2 to 23% by weight and the water-soluble type polyethylene glycol is 0.5 to 5% by weight. When, the hydrophilicity was the best.

The powder of titanium dioxide anatase, titanium dioxide USA R, water-soluble type yellow color is used in the manufacture of white color as a pigment, and the true color can be generated or maintained only when the three are mixed. If you want a different shade of chalk, the pigment should be used as an additional pigment in color, 10 to 50% by weight titanium dioxide anatase, 9 to 20% by weight titanium dioxide USA R, 1 to 3 weight of powder of water-soluble yellow color. When formulated in%, the most perfect white was produced.

The ceramic powder is suitably in the range of 1 to 15% by weight because it is sufficient that the anion value to be ejected as a mineral present in large quantities in nature is about 1,200 to 1400. In addition, when the ceramic was used as an elite-mesh 325 mesh type, the blendability was excellent. In addition, the ceramic powder plays a part of mixing and emulsifying as a filler and also contributes to stabilizing chromaticity.

The anionic chalk prepared by the above method is stearic acid palm, which maintains proper hardness and formability, and has a good writing feeling, and an alcohol-based leocol, a water-soluble stabilizer, which is an emulsifier that allows each material to be well mixed. , Low molecular water soluble polyethylene glycol and water soluble polyethylene glycol mixed with propylene water-soluble emulsifier and mixed so as to be easily erased due to hydrophilicity, titanium dioxide anatase, titanium dioxide USA R, water soluble type to give a color tone Yellow-colored powder and ceramic powder, which serves as a part of mixing and emulsifying as a filler, stabilizes chromaticity, and emits anions, are mixed and melted, and then gradually solidifies in a vacuum.

And each of the above components is preferably composed of the following content.

5-20% by weight stearic acid palm, 7-10% by weight of alcohol group Leocol, 2-15% by weight of water-soluble stabilizer, 2-23% by weight of low molecular water-soluble type polyethylene glycol, 0.5% by weight of water-soluble polyethylene glycol -5 wt%, propylene water-soluble type emulsifier 0.3-10 wt%, ceramic 1-15 wt%, titanium dioxide anatase 10-50 wt%, titanium dioxide USA R 9-20 wt%, water-soluble type yellow color powder 1 It is mix | blended and comprised by -3 weight%.

The stearic acid palm is preferably stearic acid palm 1837-1838 type, the water-soluble type stabilizer is preferably LA20 (product made by SSF), the alcohol group Leocol is alcohol group Leocol SL60 to SL80 (American Trade Co., Ltd.) Product), the low molecular water-soluble type polyethylene glycol is preferably polyethylene glycol 100 to 4000, the water-soluble type polyethylene glycol is preferably polyethylene glycol 4200 to 8000 MS, and the ceramic is preferably an illite ceramic 325 mesh type.

Claims (6)

In the method of producing anionic chalk, Stearic acid palm, alcoholic group Leocol, low molecular weight water soluble type polyethylene glycol, water soluble type polyethylene glycol, propylene water soluble type emulsifier, water soluble type stabilizer, ceramic, titanium dioxide anatase, titanium dioxide USA R, water soluble type yellow color A stirring step of mixing and heating the powder, It is made of an extrusion molding step of extrusion molding the stirred mixed raw materials into an extruder configured with an extrusion head at one end, The extrusion molding step includes a first transfer step of transferring the stirred mixed raw material at 25 ° C ~ 95 ° C state and transported toward the extrusion head, A second transfer step of compressing the mixed raw material transferred in the first transfer step at a temperature of 55 ° C. to 70 ° C. and passing the molding mold formed in the extrusion head to discharge the molded solid material while gradually lowering the temperature; A first cooling process of gradually cooling the discharged solids in a vacuum of 15 ° C. to 35 ° C., And a second cooling step of cooling the solids which have undergone the first cooling process through a conveyor shower. The method of claim 1, The stearic acid palm is 5 to 20% by weight, The alcohol group Leocol is 7 to 10% by weight, The water-soluble type stabilizer is 2 to 15% by weight, The low molecular weight water-soluble polyethylene glycol is 2 to 23% by weight, The water-soluble type polyethylene glycol is 0.5 to 5% by weight, The propylene water-soluble emulsifier is 0.3 to 10% by weight, The ceramic is 1 to 15% by weight, The titanium dioxide anatase is 10 to 50% by weight, The titanium dioxide USA R is 9 to 20% by weight, 1 to 3% by weight of the powder of the water-soluble yellow color. The method according to claim 1 or 2, The stearic acid palm is stearic acid palm 1837-1838 type, The water-soluble type stabilizer is LA20 (product made by SF City), The alcohol group Leocol is alcohol group Leocol SL60 to SL80 (manufactured by US Trade Co., Ltd.), the low molecular water-soluble type polyethylene glycol is polyethylene glycol 100 to 4000, the water-soluble type polyethylene glycol is polyethylene glycol 4200 to 8000 MS, The ceramic is a method of manufacturing anion chalk, characterized in that it comprises an elite ceramic 325 mesh type. In constructing anion chalk, Stearic Mountain Farm, With alcohol group Leocol, water-soluble type stabilizer, Low molecular weight water-soluble type polyethylene glycol and water-soluble type polyethylene glycol, titanium dioxide anatase, titanium dioxide USA R, powder of water-soluble type yellow color, Anionic chalk, characterized in that the ceramic powder is mixed and composed of a solid. The method of claim 4, wherein The stearic acid palm is 5 to 20% by weight, The alcohol group Leocol is 7 to 10% by weight, The water-soluble type stabilizer is 2 to 15% by weight, The low molecular weight water-soluble polyethylene glycol is 2 to 23% by weight, The water-soluble type polyethylene glycol is 0.5 to 5% by weight, The propylene water-soluble emulsifier is 0.3 to 10% by weight, The ceramic is 1 to 15% by weight, The titanium dioxide anatase is 10 to 50% by weight, The titanium dioxide USA R is 9 to 20% by weight, Anionic chalk, characterized by comprising 1 to 3% by weight of the powder of the water-soluble yellow color. The method according to claim 4 or 5, The stearic acid palm is stearic acid palm 1837-1838 type, The water-soluble type stabilizer is a water-soluble type stabilizer LA20 (manufactured by SSF Sea), The alcohol group Leocol is alcohol group Leocol SL60 to SL80 (manufactured by US Trade Co., Ltd.), the low molecular water-soluble type polyethylene glycol is polyethylene glycol 100 to 4000, the water-soluble type polyethylene glycol is polyethylene glycol 4200 to 8000 MS, The ceramic is anion chalk, characterized in that consisting of 325 mesh type of illite ceramic.