JPH082176A - Board for writing - Google Patents

Abstract

PURPOSE:To provide a board for writing in which printing can be facilitated and the print is scarcely released. CONSTITUTION:A board W for writing comprises an opaque back surface sheet 2 at the opposite side to the writing side of a transparent writing sheet 1, and a print P provided on the side of the sheet 1 at the side of the sheet 2 or the side of the sheet 2 at the side of the sheet 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a writing board such as a white board used as a schedule board, a message board, and the like, and more particularly to a writing board that is easy to print and is resistant to peeling. .

[0002]

2. Description of the Related Art As a writing board such as a whiteboard conventionally used as a schedule board, a message board, a memo board, or the like, for example, as shown in FIG. Widely used.
In order to make it possible to erase written characters and the like on the writing board W by means of felt or the like, writing is usually performed using, for example, water-based ink or the like.

In the above-mentioned writing sheet 1, even if a water-based ink is used, it may be difficult to erase depending on the type. Therefore, paint is applied to the surface layer of the sheet, and heat treatment is applied to the sheet. The coating layer 11 is formed by applying a release agent. As a result, the erasability of writing is improved.

[0004]

However, in the writing board W as described above, since the print P is applied on the coating layer 11, it is difficult to hold the print P stably, and therefore, the characters or the like are not printed. When the writing / erasing is repeated, or particularly when the writing board W has flexibility, the print P may peel off due to its bending. In particular, when the coating layer 11 is formed of a release agent, the printing sheet P is printed on the writing sheet 1.
Is difficult to apply.

An object of the present invention is to solve the above-mentioned problems, to provide a writing board which is easy to print and which is difficult to peel off.

[0006]

The present inventor has found that the above objects can be achieved by the following invention. That is,
The writing board of the present invention has an opaque back sheet on the side opposite to the writing side of a transparent writing sheet, and printing on the back sheet side surface of the writing sheet or the writing sheet side surface of the back sheet. It has been given.

[0007]

According to the present invention, the writing sheet is made of a transparent material, and the side of the back sheet of the writing sheet or the side of the writing sheet of the back sheet is printed so that it can be seen from the writing side of the writing sheet. It was done like this. As a result, the print is never peeled off due to repeated writing / erasing of characters or the like on the writing side surface, and the print is not peeled off even when the writing board is bent. Furthermore, since a material suitable for printing such as synthetic paper can be used as the back sheet and printing can be performed on the back sheet, the printing can be performed easily and the printing can be held stably. You can

The present invention will be described in more detail below with reference to the drawings. FIG. 1 is a schematic perspective sectional view of a writing board showing an embodiment of the present invention. In the figure, W is a writing board, has a back sheet 2 on the side opposite to the writing side of the writing sheet 1, and has a configuration in which printing P is applied to the side surface of the writing sheet 1 of the back sheet 2. Has become.

In the present invention, the writing sheet 1 is made of a transparent material. The transparency of the writing sheet 1 may be such that the print P on the opposite side can be seen through from the writing side, but in order to allow the print P to be seen through sufficiently. It is desirable that the writing sheet 1 is made of a material having a visible light transmittance of 50% or more, preferably 95% or more.

The material of the writing sheet 1 is not particularly limited as long as it has transparency, but at least at the writing side surface of the writing sheet 1, good transparency is maintained. It is desirable to be made of a material that is not easily scratched. Polyester such as polyethylene terephthalate (hereinafter referred to as PET), polyethylene,
Resins such as polyolefins such as polypropylene, glass, etc. are exemplified, but among them, mechanical strength, sliding resistance,
A resin such as polyester, which is excellent in transparency and the like, and PET is preferable.

The thickness of the writing sheet 1 is usually 10 to 200 μm, preferably 50 although it depends on the material.
Approximately 100 μm is suitable. When the thickness of the sheet 1 is within the above range, the mechanical strength is sufficient, and
The writing board W can be made lightweight and inexpensive.

On the writing side of the writing sheet 1, for example, as shown in FIG. 2, the affinity with the aqueous ink and the aqueous solution are improved so that writing with the aqueous ink is easy and the erasability of the writing is good. The property of easily erasing ink (in this specification, "easy erasability"
It is desirable that the transparent layer 11 having a () is formed. As a material forming the transparent layer 11, a hard resin obtained by rolling and heat-treating a resin such as vinyl chloride is exemplified as a material having excellent affinity for water-based ink and easy erasability. The transparent layer 11 is also made of a material having the same transparency as that of the writing sheet 1.

Generally, the thickness of the transparent layer 11 is preferably about 50 to 100 μm, though it depends on the material. If the thickness of the transparent layer 11 is 50 μm or more, the mechanical strength of the transparent layer 11 is sufficient, while if it is 100 μm or less, the weight and cost of the writing board W are reduced.

The writing board W of the present invention has a back sheet 2 on the side opposite to the writing side of the writing sheet 1. The back sheet 2 serves as the background of the print P, and therefore a back sheet 2 made of an opaque material is used. Further, in the present invention, as the back sheet 2, one made of a material that can be easily printed and can stably hold the printing is used.
It is preferable that the print P is applied to the side surface of the writing sheet 1 of the back sheet 2. As such a material,
Examples thereof include synthetic paper, natural paper (white paperboard, foreign paper, etc.), synthetic resin film and the like. Above all, synthetic paper using synthetic resin such as polypropylene, polyethylene, vinyl chloride, polyester and inorganic filler such as calcium carbonate is excellent in smoothness, thickness uniformity, opacity, whiteness, etc. In addition to being particularly suitable, the dimensional change is small because it is excellent in water resistance, and therefore when the back sheet 2 is used, the writing board W is less likely to be warped. Further, this synthetic paper has various advantages such as excellent mechanical strength, oil resistance and chemical resistance. As this synthetic paper, more specifically, YUPO (trade name; manufactured by Oji Yuka Synthetic Paper Co., Ltd .; main raw material polypropylene) is exemplified as being particularly preferable.

Although the printing P may be performed on the back sheet 2 side of the writing sheet 1, this tends to be slightly inferior in terms of easiness of printing process and the like.

The material of the print P and the forming method thereof are not particularly limited, and known materials and forming methods can be used.

The writing sheet 1 and the back sheet 2 are adhered to each other. As a method of adhering the adhesive sheet, a method of adhering with an adhesive is preferable in terms of workability and manufacturing cost. As this adhesive, natural rubber,
Although a usual synthetic rubber-based or synthetic resin-based pressure-sensitive adhesive can be used, one having the same transparency as that of the writing sheet 1 is used. Specifically, PL Shin (trade name) is preferable in terms of transparency and adhesiveness.

The size of the writing board W is not particularly limited and is appropriately determined according to the purpose of use.

The use form of the writing board W is also appropriately determined according to the purpose of use, and may be, for example, a form of hanging on a wall or leaning against a suitable supporting member. When hanging on a wall, a usual method such as hanging with a string and attaching it to an iron part using a magnet is used. For example, as shown in FIG. 2, the adhesive layer 3 is provided on the back surface of the writing board W. The board W may be provided so that the board W can be attached to a wall surface or the like. According to this, the material of the adherend is not limited as in the case of using a magnet.

In this case, the adhesive layer 3 may have an appropriate adhesive force depending on the weight of the writing board W, the material of the adherend, and the like, but in particular, the board W can be removed. Therefore, it is preferable that the adhesive layer 3 has removability. Furthermore, it is particularly preferable that the releasable adhesive layer 3 is configured so that the sticking / peeling to / from an adherend can be repeatedly performed because the board W can be reused. As the adhesive layer having the removability, one known in the art may be used.

As the pressure-sensitive adhesive forming the adhesive layer 3,
Conventional natural rubber-based, synthetic rubber-based, or synthetic resin-based pressure-sensitive adhesives can be used, and among them, acrylic emulsion-based pressure-sensitive adhesives are preferably used. Further, as the acrylic emulsion-based adhesive, more specifically, MF type (trade name), LS-9053 (trade name) and the like are exemplified as preferable ones. Among them, the MF type is preferable in terms of adhesive strength and the like. Are particularly preferred. The adhesive layer 3 is usually covered with a release sheet 4 which has been subjected to a release treatment with silicone or the like before use.

As described above, the writing board W is a magnet,
When it is used by being attached to a wall surface with an adhesive or the like, the thickness of the writing sheet 1 depends on the material, but it depends on the material.
It is desirable that the thickness is about μm or less, preferably about 20 to 30 μm, and more preferably about 25 μm. If the thickness of the writing sheet 1 is about 40 μm or less,
The writing sheet 1 is sufficiently flexible, and as a result, the board W can sufficiently follow a curved portion, for example. Note that, for example, in the step of forming the transparent layer 11 on the surface of the writing sheet 1, the writing sheet 1 usually receives heat, but if the thickness of the writing sheet 1 is about 20 μm or more, the writing sheet 1 is It is desirable in terms of heat resistance of the sheet 1.

Further, particularly in this case, as the material of the writing sheet 1, it is preferable to use a material which is excellent in flexibility in addition to the above-mentioned mechanical strength, sliding resistance, transparency and the like. As such a resin having such characteristics, a resin such as polyester, and especially PET is exemplified as a particularly preferable one.

In the above case, the thickness of the back sheet 2 is about 100 μm or less, preferably about 60 to 90 μm, more preferably about 80 μm, though it depends on the material. Further, when the transparent layer 11 is formed on the writing side of the writing sheet 1, the transparent layer 1
The thickness of No. 1 depends on the material, but is preferably about 10 μm or less, preferably about 1 to 5 μm, and more preferably about 5 μm. The thickness of the back sheet 2 is 100μ
When the thickness is about m or less, the writing sheet 1 has sufficient flexibility, which is preferable from the viewpoint of shape conformability of the board W. On the other hand, when the writing sheet 1 is about 60 μm or more, the machine of the back sheet 2 is preferable. Sufficient strength. In addition, the transparent layer 1
If the thickness of 1 is about 10 μm or less, the writing sheet 1 becomes sufficiently flexible and the board W
In terms of shape conformability, the mechanical strength of the transparent layer 11 is sufficient if it is about 1 μm or more.

In the writing board W of the present invention, the print P is applied to the side surface of the back sheet 2 of the writing sheet 1 or the side surface of the writing sheet 1 of the back sheet 2 as described above. Even if the board W is bent along a curved portion, the print P does not peel off. Therefore, the flexible writing board W as described above is particularly useful because it is excellent in shape-following property and the print is not easily peeled off.

Further, an equipment storage portion may be provided at an appropriate position on the writing board W, and a pen, an ink eraser, or the like may be stored therein. The equipment storage portion may have a pocket-like form or a hook-like form for hanging a pen or the like. However, as shown in FIG. 2, the magnet part 5 made of iron, cobalt, nickel or a compound thereof is used. It is also possible to fix the writing board W at an appropriate position and attach a pen or the like to the board W by using a magnet. The magnet portion 5 is a portion other than the writing side surface of the writing sheet 1, for example, the back sheet side surface or the back sheet 2 of the writing sheet 1.
May be provided on the side surface of the writing sheet, etc., so that the writable area on the writing side surface is not reduced by the magnet portion 5. Further, it is possible to adopt a mode in which the adhesive layer 3 contains the same metal or compound powder as described above.

[0027]

EXAMPLES Hereinafter, the present invention will be described more specifically by showing examples. Needless to say, the present invention is not limited to these examples. Example 1 On the surface of a synthetic paper (trade name: YUPO 200; manufactured by Oji Yuka Synthetic Paper Co., Ltd.) having a length of 260 mm, a width of 365 mm, and a thickness of 200 μm, an oil-based ink was used, and sheet-fed offset printing was performed as shown in FIG. Similar printing was performed. Then, this synthetic paper,
260mm in length, with the printed side facing inward
On a transparent PET sheet with a width of 365 mm and a thickness of 100 μm,
A transparent adhesive (trade name: PL Shin) was used for the attachment, and a writing board similar to that shown in FIG. 1 was produced.

Example 2 Printed synthetic paper and PE were processed in the same manner as in Example 1 above.
It was pasted with a T-sheet. Then, a 5 μm thick transparent layer made of hard vinyl chloride was provided on the surface of the PET sheet opposite to the synthetic paper. On the other hand, an adhesive (trade name: MF type) was applied to the surface of the synthetic paper opposite to the PET sheet to form an adhesive layer, which was covered with release paper. Further, on the transparent layer, a length of 30 mm, a width of 20 mm, and a thickness of 0.
A 3 mm iron plate was adhered to manufacture a writing board similar to that shown in FIG.

Example 3 In Example 2 above, the thickness of the synthetic paper was 80 μm and PE
A writing board was produced in the same manner except that the thickness of the T sheet was 25 μm.

The writing boards obtained in the above examples are easy to print at the time of manufacture, and the printing does not peel off due to repeated writing / erasing of characters or the like on the writing side during use. Moreover, the print does not peel off when the writing board is bent. In addition, the writing board obtained in Example 2 is
It has excellent erasability in writing, and can be repeatedly adhered to and peeled from the wall surface of the board. Furthermore, the writing board obtained in Example 3 has sufficient flexibility and can sufficiently follow a curved portion or the like.

[0031]

As described above in detail, the writing board of the present invention has the opaque back sheet on the side opposite to the writing side of the transparent writing sheet, and the back sheet of the writing sheet. Since the printing is done on the side of the writing sheet on the side or back sheet, there is no peeling of the printing due to repeated writing and erasing of characters etc. on the writing side, and when the writing board bends But the print does not peel off.

Furthermore, since a material suitable for printing such as synthetic paper can be used as the back sheet and printing can be performed on the back sheet, the printing can be performed easily and the printing can be held stably. Can be

[Brief description of drawings]

FIG. 1 is a schematic perspective sectional view of a writing board showing an embodiment of the present invention.

FIG. 2 is a schematic perspective sectional view of a writing board showing another embodiment of the present invention.

FIG. 3 is a schematic perspective sectional view showing an example of a conventional writing board.

[Explanation of symbols]

 1 Writing Sheet 2 Back Sheet P Printing W Writing Board

Front page continued (72) Inventor Takayoshi Nishikawa 18-4 Shimizutani-cho, Tennoji-ku, Osaka City Hikko Stock Company (72) Inventor Goya Uemura 18-4 Kiyomizutani-cho, Tennoji-ku Osaka City Hikko Stock Company

Claims (9)

[Claims] 1. A transparent writing sheet has an opaque back sheet on the side opposite to the writing side, and printing is performed on the back sheet side surface of the writing sheet or on the writing sheet side surface of the back sheet. There is a writing board. 2. A transparent polyester writing sheet has an opaque back sheet on the side opposite to the writing side, and printing is performed on the back sheet side of the writing sheet or on the writing sheet side of the back sheet. A writing board that has been applied. 3. A transparent writing sheet having a transparent layer, which has affinity for water-based ink and is easy to erase, on the writing side, has an opaque back sheet on the side opposite to the writing side, and A writing board with printing on the side of the back sheet or the side of the writing sheet on the back sheet. 4. A transparent writing sheet having a back sheet formed on the opposite side of the writing side from opaque synthetic paper having a polyolefin and an inorganic filler, and A writing board with printing on the side of the back sheet or the side of the writing sheet on the back sheet. 5. An opaque back sheet is adhered to the opposite side of the writing side of the transparent writing sheet with a transparent adhesive, and the back sheet side surface of the writing sheet or the writing sheet of the back sheet. Writing board with printing on the side. 6. A transparent writing sheet has an opaque back sheet on the side opposite to the writing side, and printing is performed on the back sheet side surface of the writing sheet or the back sheet side surface of the writing sheet. A writing board with an adhesive layer on the back side of the writing board. 7. A transparent writing sheet having a thickness of 40 μm or less has an opaque back sheet on the side opposite to the writing side, and is provided on the side of the back sheet of the writing sheet or on the side of the writing sheet of the back sheet. A writing board that has been printed. 8. A laminate comprising a transparent polyethylene terephthalate sheet having, on one side thereof, an opaque synthetic paper comprising polypropylene and calcium carbonate bonded with a transparent adhesive, the polyethylene comprising: Printing is performed on the synthetic paper side of the terephthalate sheet or the polyethylene terephthalate sheet side of the synthetic paper, and a layer made of transparent hard vinyl chloride is provided on the side opposite to the synthetic paper side of the polyethylene terephthalate sheet, while the above synthetic A writing board in which an adhesive layer having removability is provided on the side opposite to the polyethylene terephthalate sheet side of the paper. 9. A transparent polyethylene terephthalate sheet having a thickness of 40 μm or less is adhered to one side of an opaque synthetic paper having a thickness of 100 μm or less, which comprises polypropylene and calcium carbonate, with a transparent adhesive. A laminate having a thickness of 10 μm or less on the side opposite to the synthetic paper side of the polyethylene terephthalate sheet, which is printed on the side of the synthetic paper of the polyethylene terephthalate sheet or the side surface of the polyethylene terephthalate sheet of the synthetic paper. A writing board provided with a layer made of hard vinyl chloride, while an adhesive layer having removability is provided on the opposite side of the synthetic paper from the polyethylene terephthalate sheet side.