JP2006062349A - Body to be written and set of writing instrument - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a body to be written capable of exhibiting good sticking and easily erasing even when such a writing instrument as an oil pastel and a water-based crayon is used. <P>SOLUTION: The body 1 to be written equipped with a writing face on which writing and erasing can be repeatedly performed, is provided. A coating film 6 with a coating for preventing scribbling is formed on the surface of the writing face of this body to be written. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a script that can be used repeatedly.

Conventionally, blackboards and whiteboards are known as writing objects that can be repeatedly written and erased.
In the case of a blackboard, by using chalk as a writing instrument, written characters and the like can be erased and can be used repeatedly.
In the case of a whiteboard, it can be used repeatedly by writing with a dedicated whiteboard marker. As the white board, a synthetic resin, a plywood made of wood, or a relatively hard plate such as a corrugated cardboard is used as a core, and the surface thereof is coated with a synthetic resin such as polypropylene, polyethylene, or polyester (for example, , See Patent Document 1).
JP-A-9-175085

However, blackboards and whiteboards have the following problems.
In the case of a blackboard, there is a problem that the chalk powder adheres to the hand or the like during writing, and the chalk powder is scattered. Also, the writing instrument is limited to chalk, and the color of the blackboard itself is uniform, so the texture of drawing is unique to the blackboard, for example, the texture like when drawing on ordinary white paper is completely I can't get it. Therefore, its use is extremely limited, and for example, it is not widely used in general households.
In the case of a whiteboard, it is necessary to use a dedicated whiteboard marker, and written characters and drawings are limited to those written with so-called markers. ing.

  On blackboards and whiteboards, if you use a writing part other than a dedicated writing instrument, you may not be able to erase it, or it will be difficult to erase it. Therefore, for example, it cannot be used as a drawing board for drawing using an oil pastel that can be drawn easily by children such as infants.

  The present invention has been made in view of such circumstances, and can be used repeatedly, and can be easily erased even when a writing instrument such as oil pastel or aqueous crayon is used. The purpose is to provide.

The writing body of the present invention is a writing body having a writing surface that can be repeatedly written and erased, and a coating film is formed on the surface of the writing surface by a paint for preventing graffiti. It is characterized by.
The present inventor has intensively studied a writing body that can achieve the above-mentioned object.Unexpectedly, by using a paint known as a graffiti-preventing paint, it was written with oil pastel or water-based crayon. However, it has been found that it is possible to obtain a writing body that is well-positioned and can be erased very easily.

  The graffiti-preventing paint was developed so that graffiti by lacquer spray, paint, etc. can be easily removed, and is exclusively intended to remove graffiti. Accordingly, the graffiti prevention paint is a paint that can not be used for writing graffiti as much as possible, and was developed with the intention of making the writing instrument wear as bad as possible. Therefore, conventionally, it has never been considered that the graffiti-preventing paint is used for the purpose of actively writing such as a drawing board. And even if writing on the paint for preventing graffiti with oil pastel or the like, it was assumed that the drawn line would be faint or frayed and the arrival was extremely bad. However, surprisingly, when writing on the graffiti-preventing paint with an oil pastel or the like, it was found that it was very easy to wear and erased very easily.

  It is preferable that the above-mentioned to-be-written object shall be provided with the said coating film by the graffiti prevention coating material on the main-body part which is a plate-shaped member. In this case, the writing body is hardly deformed even by the writing pressure, and it can be used without requiring an underlay or a support.

The writing instrument set of the present invention comprises the above-mentioned writing object and oil pastel or aqueous crayon as a writing instrument. It has been found that oil pastels and aqueous crayons are particularly preferred as the writing instrument for the writing body of the present invention using the graffiti-preventing paint. That is, it was found that when oil pastels or aqueous crayons were used as the writing instrument for the writing body of the present invention, it was easy to wear and erased.
Further, when an aqueous crayon is used, the aqueous crayon attached to the eraser can be easily removed by washing the eraser such as a wiping cloth used for erasing with water, and the eraser can be easily cleaned.

An oil pastel (also referred to as a pass) is typically a Crepas (registered trademark) commercially available from Sakura Crepas Co., Ltd., but is different from a crayon. Common components of crayons are oils and fats such as wax (paraffin, beef tallow oil, stearic acid derivatives, etc.) 63-86%, extender pigments (calcium carbonate, talc, etc.) 5-24%, pigments 5-31 %. On the other hand, the general components of oil pastels are 32-60% fat such as wax (paraffin, beef tallow oil, stearic acid derivatives, etc.) and liquid oil, 37-57% extender pigment (calcium carbonate, etc.), pigments It contains 3 to 25%. Oil pastels are softer than crayons, are easier to write with lower writing pressure, and are more suitable for surface coating than crayons.
On the other hand, an aqueous crayon that can be wiped off with water uses a surfactant in place of oil and fat such as wax.

  According to the present invention, by using a graffiti-preventing paint on the surface of the writing surface, even when a writing instrument having a large number of colors such as oil pastels and aqueous crayon is used, it is easy to wear and can be easily erased. A script that can be used repeatedly can be provided.

Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is a perspective view of a writing board 1 as a writing body according to an embodiment of the present invention. The writing board 1 has a rectangular shape as a whole, and has a frame portion 2 provided along the four sides thereof and a writing surface 3 that is a plane on which writing is performed by a writing instrument. The shape of the writing board 1 is not limited to a rectangle, and can be any shape.

  FIG. 2 is a sectional view of the writing board 1 at the writing surface 3 portion. The writing board 1 includes a plate-shaped main body 4, a colored layer 5 as a colored coating provided on the surface of the main body 4, and an outermost layer 6 that is transparent and constitutes a coating on the most surface side. It consists of. The outermost layer 6 is made of a graffiti preventing paint.

In addition, the material of the main-body part 4 is not specifically limited, All things, such as metal, resin, wood, such as a plywood, can be used. By using the main body 4 having high rigidity, that is, having rigidity that hardly deforms due to an external force of the writing pressure, a writing body that can be used without requiring an underlay or a support is provided. it can. Moreover, when a metal plate is used as the main body part 4, a magnet can be attached to the writing surface 3, which is preferable in terms of widening the application.
On the other hand, the main body 4 is not limited to a plate-like member, and may be a flexible material such as a sheet-like member. That is, for example, a sheet material made of resin, rubber, paper, cloth, or the like may be used as the main body portion 4. In this case, since it can be folded and rolled and becomes lightweight, it is preferable in terms of convenience in carrying and storage. Furthermore, a magnetic sheet, an adhesive sheet, etc. can also be used as a sheet-like member. The magnetic sheet is preferable in that it can be easily attached to and detached from steel storage equipment. Moreover, when it is set as an adhesive sheet, it is preferable at the point which can be easily affixed on a wall surface etc. and is easy to peel off.

  Further, a ruled line may be provided on the writing surface 3. Providing a ruled line is preferable in terms of improving convenience when used for a specific purpose such as a date description or a schedule, like the ruled lines provided on a blackboard or whiteboard. When the graffiti preventing paint is a clear paint as in this embodiment, the ruled line is preferably provided immediately below the clear paint layer because the clear paint layer protects the ruled line. Therefore, for example, in the case of the coating film structure as in the present embodiment, after the colored layer 5 is applied, a ruled line is provided on the colored layer 5, and the outermost layer 6 is made of a graffiti preventing paint and has transparency. Is preferably provided.

  In this embodiment, although the coating film on the main-body part 4 has illustrated the thing of two layers, in this invention, what is necessary is just to use the coating material for graffiti prevention for the outermost layer 6 at least. Therefore, the coating film may be a single layer made only of graffiti-preventing paint, or conversely, may be a multilayer of three or more layers. When the outermost layer is a graffiti-preventing paint, and when a dedicated paint is recommended for each layer other than the outermost layer, such as a base preparation paint, undercoat paint, intermediate coat paint, top coat paint, etc. These coating film configurations can be used as they are.

  By providing the colored layer 5, the color of the main body portion 4 can be concealed, and it can be colored in a favorite color regardless of the color of the main body portion 4. In this case, it is preferable to use a clear paint having transparency as the graffiti preventing paint used for the outermost layer 6 because the color of the colored layer 5 is visually recognized. A white color is preferably used as the color of the colored layer 5 because a texture close to that of drawing on white paper can be obtained.

  In the present invention, the graffiti-preventing paint that forms a coating film may be a commercially available paint that can easily remove graffiti. In particular, a graffiti-preventing paint that can be removed by a simple method such as wiping with a lacquer spray or felt pen when applied to a structure such as a building outer wall, a utility pole, or a bridge pier is preferable. In general, such graffiti-preventing paints have the effect of facilitating the removal of graffiti, as well as posters, advertising flyers, and other stickers attached to the surface that can be peeled off naturally or easily removed. Also has an effect that can be.

  Examples of such graffiti-preventing paints include fluororesin paints, silicone resin paints, silicon-modified fluororesin paints, silicone / fluorine resin paints, and acrylic silicone resin paints.

  More specifically, graffiti-preventing paints are those in which a lubricant material such as silicone oil, polyethylene wax or liquid paraffin is added to the paint, and polytetrafluoroethylene, polyvinylidene fluoride, poly (par Fluoroalkyl acrylate), fluorine-containing compounds such as tetrafluoroethylene or chlorotrifluoroethylene / alkyl vinyl ether copolymer, or those containing polyalkylsiloxane-containing compounds, and coating materials to which fluorine resin fine particles are added are exemplified.

  Furthermore, other graffiti-preventing paints include those containing polyalkylsiloxane-containing compounds, and a lubricating resin such as silicone oil, polyethylene wax, or liquid paraffin is added to a binder resin typified by a silicone resin. Examples are paints. Furthermore, (meth) acrylic acid ester is copolymerized using a reactive silicone oil-containing paint or a polydimethylsiloxane compound capable of generating radicals such as an azo group or a peroxy group, and the polydimethylsiloxane is incorporated into the molecular chain. Examples thereof include paints containing a block copolymer base resin. A paint containing a grafted product obtained by directly reacting a fluororesin with polysiloxane may also be used. Moreover, the coating material which consists of a copolymer in which a polydimethylsiloxane block exists in a polymer chain and / or a copolymer in which a polydimethylsiloxane chain is grafted in a polymer chain may be used.

  Another graffiti-preventing paint includes an organic solvent-soluble fluororesin having a radical polymerizable unsaturated bond moiety via a urethane bond, a one-end radical polymerizable polysiloxane, and the organic solvent-soluble fluorine under radical polymerization reaction conditions. Examples thereof include a graft copolymer obtained by copolymerizing a resin and a radical polymerizable monomer that does not react other than a polymerization reaction by a double bond.

  Further, another graffiti-preventing paint includes a fluororesin having a radically polymerizable unsaturated bond via a urethane bond, a one-end radically polymerizable polysiloxane, a monomer having an alkoxysilyl group, and a monomer having a hydroxyl group , And a coating material containing a curing agent such as polyisocyanate capable of undergoing a crosslinking reaction with the copolymer. The fluororesin in this case can be obtained by reacting a fluororesin having a hydroxyl group with a radical polymerizable monomer having an isocyanate group. Examples of the radical polymerizable monomer include methacryloyl isocyanate and 2-isocyanatoethyl methacrylate. Further, as the one-end radical polymerizable polysiloxane, Silaplane (registered trademark) FM-0711 (manufactured by Chisso Corporation), Silaplane (registered trademark) FM-0721 (manufactured by Chisso Corporation), Silaplane (registered trademark) FM-0725 (manufactured by Chisso Corporation), X-22-174DX (manufactured by Shin-Etsu Chemical Co., Ltd.) and the like. These single-terminal radically polymerizable polysiloxanes may be used alone or in admixture of two or more. Furthermore, examples of the monomer having an alkoxysilyl group include: -methacryloxypropyltrimethoxysilane, -methacryloxypropyltriethoxysilane, -methacryloxypropylmethyldimethoxysilane, vinyltrimethoxysilane, vinyltriethoxysilane, vinyltris. (-Methoxyethoxy) silane, glycidyl (meth) acrylate, etc. are mentioned. Examples of the monomer having a hydroxyl group include p-hydroxystyrene, p-hydroxymethylstyrene, 2-hydroxyethyl (meth) acrylate, 2-hydroxypropyl (meth) acrylate, 3-hydroxypropyl (meth) acrylate, 2 -Hydroxybutyl (meth) acrylate, 4-hydroxybutyl (meth) acrylate, di-2-hydroxyethyl fumarate and the like are exemplified.

  These illustrated graffiti-preventing paints are described in JP-A-9-100445, JP-A-2000-160132, JP-A-2000-119354, and JP-A-2003-292870.

  Examples of commercially available paints for preventing graffiti used in the present invention include “SK Hard Clean” (registered trademark), a special silicone resin-based paint manufactured by SK Kaken Co., Ltd. Trade name “Keshiso”, a two-component acrylic silicone resin paint, trade name “Magic Art” (registered trademark), a special silicone-modified fluororesin clear paint made by Dainippon Paint Co., Ltd., manufactured by Hengwa Chemical Industry Co., Ltd. The product name “Daily Fine” (registered trademark), which is a special silicone / fluorine resin-based paint, and the product name “Evahard (registered trademark) No100 (S)”, which is a releasable silicone composite paint manufactured by Ohashi Chemical Industries, Ltd. Etc. can be illustrated.

  As a writing instrument for writing on the writing body of the present invention, for example, pastels, crayons, whiteboard markers, oil pastels, aqueous crayons and the like can be used. Of these, especially when oil pastels and aqueous crayon were used, it was found that the writing surface was very good and erasure was extremely easy.

  As an eraser for erasing the drawing or stroke drawn on the writing material of the present invention, no special one is required, for example, cloth (fabric, towel, rag, non-woven fabric, etc.), paper (tissue paper, dust paper) Etc.), eraser for whiteboard, sponge, etc. can be used as appropriate. Pulp nonwoven fabrics such as kitchen paper can also be used. When writing with the above-mentioned writing tools (pastels, crayons, whiteboard markers, oil pastels, aqueous crayons), it is possible to erase drawn lines very easily by dry wiping without using solvents or water.

  The method for applying the graffiti-preventing paint is not particularly limited, and painting by brush, roller, spray, or the like is possible. It is preferable that a coating film that is as uniform and uniform as possible is formed. From this viewpoint, spray coating with a sprayer of fine particles is particularly preferable.

Example 1
A writing board as a writing object was prepared using a trade name “Magic Art” (registered trademark), which is a special silicone-modified fluororesin clear paint manufactured by Dainippon Paint Co., Ltd. A metal plate is used as the body of the writing board, and a white urethane-based paint is spray-coated on the surface of the metal plate as a colored layer, and the above-mentioned “Magic Art” (registered trademark) is spray-coated with a fine particle sprayer. A writing surface was prepared. The writing surface was tested for ease of drawing and erasing with pastels, crayons, whiteboard markers, oil pastels, water-based crayons, oil-based markers, and water-based markers. As the oil pastel, the product name “Sakura Crepas Futofu” manufactured by Sakura Crepas Co., Ltd. was used. . Further, as the pastel, the product name “Pastel No. 28” sold by Daiso Sangyo Co., Ltd. is used, and as the crayon, the product name “Soft Crayon Circular Paper Wrapping Type No. 4” available from Daiso Sangyo Co., Ltd. is used. ”,“ Sakura Whiteboard Marker Oil (Alcohol) ”manufactured by Sakura Crepas Co., Ltd. as the whiteboard marker, and“ Sakura Pen Touch Oil ”manufactured by Sakura Crepas Co., Ltd. as the oil marker. As a water-based marker, a trade name “Pentel Sign Pen” manufactured by Pentel Co., Ltd. was used.
The results are shown in Table 1.

Evaluation was performed by visual sensory evaluation. The meaning of each symbol in the table showing the evaluation results is as follows.
[Fitness]
○ ... It was a good fit close to that written on paper.
Δ: Not as good as the above-mentioned ○, and a part of the drawn line was faint.
X: Very poor arrival and most of the drawn lines were difficult to visually recognize.
[Ease of erasure]
○: Easily and completely erased by lightly wiping with a towel or tissue paper.
Δ: Easily erased by lightly wiping with a towel or tissue paper, leaving thin marks.
X: Even if it was wiped lightly with a towel or tissue paper, it could not be erased, and the drawn lines remained almost intact.

  As described above, in the test according to the example, the crayon, the oil pastel, the aqueous crayon, and the whiteboard marker can be obtained, and the good erasability can be obtained. In particular, the oil pastel, the aqueous crayon, and the whiteboard marker can arrive and erase. The properties were also very good. Therefore, the writing board of the example is extremely suitable as a drawing board for children such as infants, especially when oil pastels or aqueous crayons are used as writing tools.

(Example 2)
Written as a writing material using the product name “Papilles 100 (main agent: X5-100-5 Papilles 100 clear, curing agent: X5-001 Papilles 100 curing agent)”, a two-component paint manufactured by NATCO. A board was made. An iron plate having a thickness of 0.3 mm was used as the main body of the writing board. Then, the surface of this iron plate was spray-coated with an ivory-colored urethane paint as a colored layer, and the above-mentioned “Papilles 100” was spray-coated with a fine particle sprayer to prepare a writing surface. Using this writing surface, pastel, crayon A, oil pastel, new crepas, crayon B, water-based crayon, ketone-based white board marker, oil-based marker, and water-based marker writing tools, how to draw lines, ease of erasure and erase marks Tested about.

The product name “Pastel No. 28” sold by Daiso Sangyo Co., Ltd. is used as the pastel, and the product name “Soft Crayon Circular Paper Wrapping Type NO. 4 "was used. As the oil pastel, a product name “Sakura Crepas Futofu” manufactured by Sakura Crepas Co., Ltd. was used. Further, the new crep means a product name “Colored Pass BP6” manufactured by Sakura Crepas Co., Ltd. As the crayon B, the product name “Sakura Crayon Futomaki 16 colors” of Sakura Crepas Co., Ltd. was used. As the water-based crayon, a product name “Water-based graffiti that can be put with Sakura crayon water” manufactured by Sakura Crepas Co., Ltd. was used. As a ketone type white board marker, the product name “for white board marker middle character” manufactured by Sakura Crepas Co., Ltd. was used. As the oil marker, the product name “Sakura Pen Touch Oil” manufactured by Sakura Crepas Co., Ltd. was used, and as the water-based marker, the product name “Pentel Sign Pen” manufactured by Pentel Co., Ltd. was used.
The results are shown in Table 2.

Evaluation was performed by visual sensory evaluation. Each evaluation item was evaluated according to the following criteria.
[Fitness]
The writing board of Example 2 was installed in a kindergarten, and 100 five-year-old children wrote on the board with each writing instrument, and the wearing condition was evaluated. The evaluation criteria are as follows.
○ ... It was a good fit close to that written on paper.
Δ: Not as good as the above-mentioned ○, and a part of the drawn line was faint.
X: Very poor arrival and most of the drawn lines were difficult to visually recognize.

[Ease of erasure]
Kitchen paper (pulp nonwoven fabric) was used as an eraser, and the writing on the writing board written by a 5-year-old child was evaluated by whether the nursery or preschooler could erase it. The evaluation criteria are as follows.
A: All 50 nursery school children under 3 years old (0 to 2 years old) were able to be completely erased within 5 times (with less than 5 times the eraser operation).
B: Ease of erasure was inferior compared to the above evaluation A, but all three 3-year-old or 4-year-old nursery school children could be completely erased within 5 times (the number of operations of eraser was within 5 times).
C: Compared with the above evaluation B, the ease of erasure was inferior, but all 5 kindergarten children of 5 years old could be completely erased within 5 times (the number of operations of eraser was within 5 times).
D: All 5 adults over 20 years old could not be erased even if rubbed strongly with eraser.

[Erasure trace]
A: If an adult rubs strongly with an eraser (kitchen paper), no erase mark will remain.
B: Even if an adult rubs strongly with an eraser (kitchen paper), the erase mark remains, but the erase mark can be removed by using water.
C: Even if an adult rubs strongly with an eraser (kitchen paper), the erased trace will remain, and even if water is used, the erased trace will remain, but the erased trace can be dropped by using water and kitchen detergent in combination. .

  In the test using the writing board of Example 2 above, the writing board written with the oil pastel was allowed to stand for one month, and then the ease of erasure was evaluated according to the above criteria. As a result, the evaluation of ease of erasure was “A”, which was not different from the results of Table 2 evaluated immediately after writing.

It is a perspective view of the board for writing as a writing object which is one embodiment of the present invention. 2 is a cross-sectional view of the writing board of FIG. 1 in the writing surface portion.

Explanation of symbols

1 Writing board (written body)
4 Body 6 Outermost layer (coating with graffiti prevention paint)

Claims (4)

A script with a writing surface that can be repeatedly written and erased,
A to-be-written object, wherein a coating film is formed on the surface of the writing surface with a graffiti-preventing paint.   The writing object according to claim 1, wherein the coating film made of a graffiti-preventing paint is provided on a main body portion which is a plate-like member.   A writing instrument set comprising the writing body according to claim 1 and oil pastel as a writing instrument.   A writing instrument set comprising the writing body according to claim 1 and an aqueous crayon as a writing instrument.

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