JPH09315089A - Repeatedly available writing sheet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a writing sheet capable of being used many times from the result that writing can be easily erased. SOLUTION: A film layer 4 is laminated at least on one surface of the front and rear surfaces of a sheet material 2 via an adhesive layer 3, and a coating layer 5 of a coating material is laminated on the front surface to form the writing sheet 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is capable of easily erasing characters or figures once written with a writing instrument using an ink in which a colorant is uniformly dispersed in water, alcohols, organic solvents and the like. The present invention relates to a reusable writing sheet body that can be repeatedly used.

[0002]

2. Description of the Related Art Paper as a recording material includes writing paper. The writing paper is basically a blank sheet of paper that can be freely written without any printing process, but even among the writing paper, forms and slips are standard paper with pre-printed ruled lines and title characters. , The prescribed characters and numbers are written in the blanks on this standard paper.

Examples of blank sheets include calligraphy paper, drawing paper, memo paper, type paper, and the like, and standard paper includes various forms and slips, various circulation papers, fax papers, and the like. Contact paper, notebook paper, report paper, envelope paper, and the like. Such writing paper is generally handwritten using a writing instrument such as a brush, a fountain pen, a ballpoint pen, a felt-tip pen, and a pencil, but it is also often used as an output for a word processor or a computer.

[0004]

By the way, the writing paper as described above is generally stored as it is after being written, but there are many so-called temporary papers which are immediately discarded after use. Examples of the temporary paper include a paper for writing contact information and posting it at a predetermined place, a FAX transmission paper for immediately transmitting various information, an output paper for a trial output of a word processor or a computer, and the like. be able to.

In such a temporary paper, although most of the writing items to the temporary paper are changed each time, most of them are often the same as the previous sentence. And
Since it will be discarded when it is used up, when writing on a new temporary paper, it is necessary to write it including the overlapping part of the contents described on the previous temporary paper, which is very troublesome. Was.

The present invention has been made to solve the above-mentioned problems, and can be easily erased even by writing, and as a result, it can be used repeatedly as many times as desired. It is an object of the present invention to provide a reusable writing sheet body that can be used and that can be saved in advance by writing regular characters and regular sentences so as not to be erased.

[0007]

The reusable writing sheet according to claim 1 of the present invention is used for writing using an ink composed of a predetermined solvent and a coloring material mixed in the solvent. A repeatedly usable writing sheet body to be provided, wherein a film layer made of a synthetic resin is formed on at least one of the front and back surfaces of a paper material, and the surface of this film layer is coated with a predetermined coating material. Are formed.

According to this reusable writing sheet body, characters and the like written on the surface of the coating film are displayed only by the coloring material adhered to the coating film in a state where the solvent of the ink is vaporized. Therefore, by wiping the surface of the film layer with a wiping jig such as cloth or felt, the coloring material is easily removed, the characters and the like are erased, and the writing sheet body returns to a blank state. Writing can be performed again on the writing sheet that has returned to the blank state, and the writing sheet can be used repeatedly as many times as necessary by repeating writing and erasing.

Therefore, by using the writing sheet body, the writing paper conventionally used for purposes other than recording such as checking and memo writing cannot be reused after use and must be discarded. Therefore, the inconvenience that the cost of writing paper increases correspondingly is solved.

The reusable writing sheet according to claim 2 of the present invention is the reusable writing sheet according to claim 1, in which the synthetic resin film layer is polyethylene, polypropylene, polyvinyl chloride,
It is characterized by being formed of any one of an acrylic ester resin and a varnish material.

According to this reusable writing sheet body, the surface of polyethylene, polypropylene, polyvinyl chloride, acrylic ester resin, and varnish material is very smooth. Letters and the like written with ink can be easily erased by wiping with a cloth or the like. Further, since the film layer made of the above-mentioned material has a large strength against abrasion, it is not damaged by abrasion with a cloth or the like and can be used for a long period of time.

The reusable writing sheet according to claim 3 of the present invention is the reusable writing sheet according to claim 1 or 2, wherein the coating material is a vinyl acetate-based or vinyl chloride-based synthetic material. It is characterized by being a resin.

According to this reusable writing sheet body, the coating film of vinyl acetate type or vinyl chloride type has good releasability while having good ink-carrying properties, so that writing can be performed well. As well as being done, it can be easily erased.

The reusable writing sheet according to claim 4 of the present invention is the reusable writing sheet according to claim 3, wherein the vinyl acetate-based coating material is polyvinyl acetate or ethylene vinyl alcohol. Any one of a copolymer and polyvinyl alcohol, wherein the vinyl chloride-based coating material is polyvinyl chloride.

According to this reusable writing sheet, polyvinyl acetate, ethylene vinyl alcohol copolymer, polyvinyl alcohol, and polyvinyl chloride are
It is easily dissolved in a predetermined solvent, and by applying this solution, a film is formed after the solvent is volatilized, so that the film is easily formed.

The reusable writing sheet according to claim 5 of the present invention is the reusable writing sheet according to any one of claims 1 to 4, wherein at least one of the front and back surfaces of the paper material is Predetermined characters, symbols,
One of the drawings and the ruled lines or a combination thereof is described, and a blank space for writing is provided.

According to this reusable writing sheet body, by applying it to a FAX transmission guide, a notice sheet, an envelope, etc., it is possible to reduce the writing work by repeatedly using these. In addition to being possible, it is possible to effectively use useful resources that were previously wasted.

[0018]

1 is a partially cutaway perspective view showing an embodiment of a reusable writing sheet body according to the present invention, and FIG. 2 is a sectional view thereof. In FIG. 1, the thickness dimension of the writing sheet body 1 is exaggerated as compared with the vertical and horizontal dimensions. As shown in these figures, a writing sheet body 1 is composed of a paper material 2 as a core material cut into a rectangular shape.
And a pair of front and back film layers 4 made of synthetic resin laminated on the front and back surfaces of the paper material 2 with an adhesive layer 3 interposed therebetween, and a coating layer 5 composed of a coating material laminated on these film layers 4.
Are formed.

As the paper material 2, ordinary writing paper is used. The original sheet of the writing sheet 1 is formed by laminating the adhesive layer 3, the film layer 4 and the coating layer 5 on the front and back sides using the writing paper of A-line or B-line as a core material. The original sheet is cut into a predetermined size to obtain the writing sheet body 1 of the A row or the B row.

The adhesive layer 3 comprises a paper material 2 and a film layer 4.
Those that are compatible with both and are easy to handle are selected. In this embodiment, an aqueous polymer isocyanate-based adhesive, a vinyl acetate resin-based adhesive, or the like is used. Such an adhesive is applied to the front and back surfaces of the paper material 2, and a synthetic resin film is laminated on the applied surface to form the film layer 4.

The film layer 4 is formed of a film made of polyethylene, polypropylene, polyvinyl chloride, acrylic ester resin or the like. Especially when polypropylene is applied, a non-stretched film (CPP) is usually used, but a biaxially stretched film (OPP) may be used. By using OPP, the writing sheet body 1 becomes strong.

Instead of the above-mentioned film, a varnish material may be applied to the paper material 2 to form the film layer 4.

The coating layer 5 is formed of a vinyl acetate type coating material. As the vinyl acetate-based coating material, polyvinyl acetate (including ethylene vinyl acetate copolymer), ethylene vinyl alcohol copolymer, polyvinyl alcohol and the like are applied. These are applied to the surface of the film layer 4 in a state of being dissolved in a predetermined solvent, and the film-like coating layer 5 is formed by volatilization of the solvent. The ethylene vinyl alcohol copolymer also includes a reaction product of the same polymer and an alkyl isocyanate. Instead of the vinyl acetate coating material, a vinyl chloride coating material such as polyvinyl chloride may be used.

When the coating material is polyvinyl acetate, acetone acetate, esters, alcohols, chlorinated hydrocarbons, etc. are used as the solvent, and when the coating material is ethylene vinyl alcohol copolymer, toluene or toluene is used as the solvent. An aromatic type such as xylene is used, and when the coating material is polyvinyl alcohol, water is used as a solvent. When the coating material is polyvinyl chloride, cyclohexanone, nitrobenzene, butyl acetate, dichloroethane, tetrahydrofuran, methyl isobutyl ketone, etc. are used as the solvent.

The vinyl acetate type or vinyl chloride type as described above is used as the coating material.
Since these are good for writing materials and have excellent releasability, they can be well written on the surface of the coating layer 5, and by wiping with a woven fabric or felt material after writing,
This is because it is possible to easily erase written characters and the like.

Then, the writing sheet body 1 is provided for writing on a coating layer 5 formed on the outermost surface by a coating process with a predetermined writing instrument. A writing brush or a felt-tip pen is used as a writing instrument. When a writing brush is used as a writing tool, ink is used as the writing ink, and when a felt-tip pen is used as the writing tool, an alcohol solvent such as ethanol or methanol, benzene, or xylene is used as the writing ink. , Soluble in organic solvents such as aromatic solvents such as toluene and carbon tetrachloride solvents,
What is obtained by mixing coloring materials such as dyes and pigments that are uniformly dispersed in an organic solvent is used. For the color of the color material,
Typical ones are black, red, orange, yellow-orange, yellow, yellow-green,
Examples thereof include green, blue green, blue, blue violet, purple, and red violet, and intermediate colors of these colors and metal colors such as gold and silver can also be used.

When the writing sheet 1 is written with such an ink, the ink is satisfactorily applied to the coating layer 5. Further, after writing once, by wiping with a cloth or felt,
Writing is easily erased. When it is difficult to erase the writing just by wiping it with a dry cloth or felt, the writing can be surely erased by wiping it with the solvent of the ink soaked in the cloth or felt.

FIG. 3 is a process drawing showing an embodiment of the manufacturing process of the writing sheet body 1. As shown in this figure, the manufacturing process of the writing sheet body 1 includes an adhesive application process P1, a film laminating process P2, a coating process P3, and a drying process P4.

First of all, the paper materials 2 of A-row or B-row are first introduced into the adhesive application step P1 one by one. Here, an upper roller on which the adhesive 3a is evenly placed,
It is supplied between a pair of rotating rollers for applying an adhesive, which is composed of a lower roller provided so as to face the upper roller. Then, the paper material 2 is transferred to the surface of the paper material 2 while the paper material 2 is being sandwiched by both rollers while being rotated by the rotation of the rotating roller, whereby the paper material 2 is an adhesive-applied intermediate product. 2a.

Next, the adhesive-applied intermediate product 2a is introduced into the film laminating step P2. The film laminating step P2 is also provided with a pair of rotary rollers for laminating the film, which are composed of an upper roller and a lower roller, and the film 4a from the film roll arranged on the upper roller is wound around the upper roller. The film 4a is continuously pulled out by the rotation of the upper roller. Further, the lower roller rotates synchronously in the opposite direction to the upper roller in a state of contacting the upper roller via the pulled-out film 4a.

The adhesive-applied intermediate product 2a from the adhesive application step P1 is supplied between the film 4a held by the upper roller and the lower roller, whereby the adhesive-applied intermediate product 2a is supplied. The film 4a is sequentially adhered to the surface via the adhesive 3a. Therefore, by passing the adhesive-applied intermediate product 2a and the film 4a between the upper roller and the lower roller, the film layer forming intermediate product 2b is sequentially formed on the downstream side of both rollers.

Next, this film layer forming intermediate product 2b
Is introduced into the coating process P3. Also in this coating step P3, a pair of coating rollers including an upper roller and a lower roller is provided, and the coating material 5a is applied to the rotating upper roller. Then, the film layer forming intermediate product 2b is supplied between the upper roller and the lower roller which are synchronously rotating,
By transferring the coating material 5a of the upper roller onto the surface of the film layer forming intermediate product 2b, the coating layer forming intermediate product 2c is obtained.

Next, the coating layer forming intermediate product 2c is introduced into the drying step P4. This drying step P4 is convenient because it is provided with a drying chamber whose temperature is controlled to a predetermined temperature and whose exhaust is controlled. The coating layer forming intermediate product 2c is introduced into this drying chamber and exposed to the atmosphere of the drying chamber for a predetermined time, and the solvent of the coating material 5a is volatilized by this, whereby the adhesive layer 3, the film layer 4 and the coating layer 5 are formed on the surface. A laminated writing sheet 1 is obtained.

In order to form the adhesive layer 3, the film layer 4 and the coating layer 5 on the back surface of the paper material 2, the drying step P4 is performed.
It is sufficient to turn over the writing sheet body 1 derived from the above and pass through the adhesive applying step P1, the film laminating step P2, the coating step P3, and the drying step P4 again. By doing so, the writing sheet body 1 having the above-mentioned laminates on the front and back of the paper material 2 is obtained.

Since the coating layer 5 on the surface of the thus-produced writing sheet body 1 has releasability with respect to the above-mentioned various inks, the above-mentioned ink is used for the writing sheet body 1. Even when writing, the writing can be easily erased by wiping the writing surface with a cloth or felt, and in some cases, with a cloth or felt soaked with a solvent that dissolves the ink. Therefore, the writing sheet body 1 can be repeatedly used by writing and then erasing after use.

When the output of a computer or a word processor is performed by a tape ribbon or an ink jet, the writing sheet body 1 is used as an output sheet so that a character or the like once printed is soaked in the solvent of the ink. It can be easily erased by wiping with a dry cloth or felt, and thus such output paper can be used repeatedly.

FIG. 4 is a plan view showing a first mode of use of the writing sheet body 1 according to the present invention. In the first usage mode, the writing sheet body 1 is applied to the “FAX transmission guidebook”. Fax transmission guide 1a
Is a regular part 11a in which the same characters and sentences are always described.
And a non-regular part 12a that is freely described according to the destination, the date, and the requirement. Conventionally, a regular paper in which predetermined characters and sentences are printed on a regular portion 11a of a normal paper is used, and the necessary characters are written on the non-regular portion 12a of the regular paper and then transmitted.

However, since at least one FAX transmission guide is consumed each time a call is made, the number of FAX transmission guides is very large, for example, when the FAX transmission guide is used for business communication or business processing. However, there is a problem that the cost for that increases.

Therefore, a predetermined title or sentence is printed in advance on the regular portion 11a of the paper material 2, and the adhesive layer 3, the film layer 4 and the coating layer 5 are laminated on the paper material 2 to realize the present invention. FA composed of the writing sheet body 1 according to
If you create the X transmission guidebook 1a, you can easily erase the sentences, etc. written on the non-regular portion 12a after use, and it becomes possible to use it repeatedly, and when a writing error occurs, each time Since the data can be erased and rewritten, the cost can be reduced accordingly.

FIG. 5 is a plan view showing a second mode of use of the writing sheet body 1 according to the present invention. In the second usage pattern, the writing sheet body 1 is applied to "posting paper". The bulletin board 1b also has a regular portion 11b and a non-regular portion 12b, like the FAX transmission guidebook 1a. Therefore, if the regular portion 11b is printed on the paper material 2a having a predetermined size and the adhesive layer 3, the film layer 4 and the covering layer 5 are formed on the regular portion 11b to form the notice sheet 1b, the non-regular portion 12
By repeating writing and erasing on b, the same bulletin board 1b can be used a plurality of times until it is damaged, and the same action and effect as in the case of the first usage form can be obtained.

FIG. 6 is a development view showing a third embodiment of the writing sheet body 1 according to the present invention. In the third embodiment, the writing sheet body 1 is applied to an “envelope”.
In the case of the envelope 1c, the address / name field of the sender on the back side is set as the regular portion 11c, and "sama" is printed as the regular portion 11c at the lower center of the front surface. Spaces above and to the right of "sama" are non-regular part 1
2c. By writing the address and name of the recipient on the envelope 1c and then sticking a transparent adhesive tape on the writing so that the writing is not erased, the recipient will not disappear. In this state, a stamp will be attached and the item will be mailed securely. Then, the recipient can erase the writing by peeling off the transparent adhesive tape, so that the envelope 1c can be reused.

As described in detail above, the present invention has the adhesive sheet 3, the film layer 4 and the coating layer 5 laminated on at least one of the front and back surfaces of the paper material 2 for writing sheet body 1. First, the writing sheet body 1 is made strong by these layers. In addition, the coating layer 5
Since it is formed of a vinyl acetate-based coating material that has good ink-carrying properties and excellent releasability, it can be easily written using a predetermined ink, and is necessary after writing. Accordingly, the written character or the like can be easily erased by wiping with a cloth or felt impregnated with a predetermined solvent, whereby the writing sheet body 1 can be repeatedly used. Therefore, such a writing sheet body 1 is used as a fax transmission guidebook 1
By applying it to a, the bulletin board 1b, the envelope 1c, etc., it is possible to reduce the writing work by repeatedly using these, and to effectively utilize the useful resources that were previously wasted. Is possible and its effect is great.

The present invention is not limited to the above embodiment, but also includes the following contents.

(1) In the above embodiment, the paper material 2
For example, writing paper of A-row or B-row is used. Instead of applying such a sheet as the paper material 2, a roll-up paper is used and an adhesive is applied to the paper. You may laminate | stack the layer 3, the film layer 4, and the coating layer 5 one by one, and it may cut | disconnect at the end and may make a sheet of a predetermined size. By resisting, it becomes possible to manufacture the writing sheet body 1 continuously and at high speed, which is effective in reducing the manufacturing cost of the writing sheet body 1.

(2) In the above embodiment, the paper material 2
Although the adhesive layer 3 is interposed between the adhesive layer 3 and the film layer 4, the present invention is not limited to the adhesive layer 3 being interposed, and the film layer 4 is directly laminated on the paper material 2. You may do it. In this case, the synthetic resin sheets to be the film layer 4 are superposed on the paper material 2 and loaded in a soaking furnace, and the synthetic resin is heated to a temperature slightly higher than the melting point of the synthetic resin. Weld it to material 2. By doing so, it becomes possible to form the film layer 4 on the surface of the paper material 2 without interposing the adhesive layer 3.

(3) In the above embodiment, the coating layer 5 further comprising a coating material on the surface of the film layer 4.
However, the adhesive layer 3 and the film layer 4 may be omitted, and the coating material may be directly applied to the surface of the paper material 2 to form the coating layer 5. By doing so, even without the adhesive layer 3 and the film layer 4,
The writing sheet body can be erased by wiping a character or the like written with a predetermined ink on the surface thereof with a cloth or felt.

(4) In the above embodiment, the film layer 4 is formed by adhering the synthetic resin film to the paper material 2 through the adhesive layer 3, but the synthetic resin film is formed. Instead of adhering the film, it is also possible to heat and melt the synthetic resin and apply the liquid synthetic resin to the surface of the paper material 2 to form the film layer 4.

(5) In the above embodiment, the coating layer 5 is formed on the surface of the film layer 4, but only the film layer 4 is formed without forming the coating layer 5. Also, the characters and the like written with a predetermined ink can be easily erased by wiping with a cloth or the like.

[0049]

According to the reusable writing sheet body of claim 1 of the present invention, the writing sheet body has a synthetic resin film layer on at least one of the front and back surfaces of the paper material. Is formed, and since a film made of a predetermined coating material is formed on the surface of this film layer,
Characters written with ink on the surface of the film are displayed only by the coloring material that has adhered to the film when the solvent of the ink is volatilized, so use a cloth or felt wiper to wipe the film layer. By wiping the surface of the sheet, the coloring material is easily removed, characters and the like are erased, and the writing sheet body returns to a blank state. Writing can be performed again on the writing sheet that has returned to the blank state, and the writing sheet can be used repeatedly as many times as necessary by repeating writing and erasing.

Therefore, by using the writing sheet body, the writing paper used for purposes other than recording such as checking and memo writing cannot be reused after use.
Therefore, the conventional inconvenience that the cost of the writing paper increases can be solved.

According to the reusable writing sheet body of claim 2 of the present invention, the film layer made of synthetic resin comprises polyethylene, polypropylene, polyvinyl chloride,
The surface of these materials is very smooth because they are formed by any of the acrylic ester resin and the varnish material, and the characters etc. written by ink on the surface where the film layer is formed by these materials, etc. Can be easily erased by wiping with a cloth or the like. Further, since the film layer made of the above material has a large strength against abrasion, it can be used for a long period of time without being damaged by abrasion with a cloth or the like.

According to the reusable writing sheet body of claim 3 of the present invention, since the coating material is a vinyl acetate-based or vinyl chloride-based synthetic resin, it is a vinyl acetate-based or vinyl chloride-based coating material. The coating of (3) has good ink-carrying properties and excellent releasability. Therefore, it is possible to perform good writing and easily erase.

According to the reusable writing sheet body of claim 4 of the present invention, any one of polyvinyl acetate, ethylene vinyl alcohol copolymer and polyvinyl alcohol is used as the vinyl acetate coating material. These materials are used, and these materials are easily dissolved by a predetermined solvent, and when the solution is applied, a film is formed after the solvent volatilizes, so that the film can be easily formed.

According to the reusable writing sheet body of claim 5 of the present invention, at least one of the front and back surfaces of the paper material is preliminarily provided with any of predetermined characters, symbols, figures and ruled lines. Or a combination of them is written and a blank space for writing is provided, so by applying this to FAX transmission guidebooks, bulletin sheets, envelopes, etc., by repeatedly using these, It is possible to reduce the writing work, and it is possible to effectively use useful resources that were previously wasted.

[Brief description of drawings]

FIG. 1 is a partially cutaway perspective view showing an embodiment of a reusable writing sheet body according to the present invention.

FIG. 2 is a cross-sectional view of the writing sheet body shown in FIG.

FIG. 3 is a process drawing showing an embodiment of a manufacturing process of a writing sheet body.

FIG. 4 is a plan view showing a first mode of use of the writing sheet body according to the present invention.

FIG. 5 is a plan view showing a second mode of use of the writing sheet body according to the present invention.

FIG. 6 is a development view showing a third embodiment of the writing sheet body according to the present invention.

[Explanation of symbols]

 1 Writing Sheet 1a FAX Transmission Guide 1b Bulletin Paper 1c Envelopes 11a, 11b, 11c Regular Part 12a, 12b, 12c Non-Regular Part 2 Paper Material 2a Adhesive Intermediate 3 Adhesive Layer 3 3a Adhesive 4 Film Layer 4a film 5 coating layer 5a coating material P1 adhesive application process P2 film laminating process P3 coating process P4 drying process

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Claims (5)

[Claims] 1. A reusable writing sheet body, which is used for writing using an ink composed of a predetermined solvent and a coloring material mixed in the solvent, wherein A reusable writing sheet body, characterized in that a synthetic resin film layer is formed on at least one surface of the above, and a film of a predetermined coating material is formed on the surface of this film layer. 2. The repeat according to claim 1, wherein the synthetic resin film layer is formed of any one of polyethylene, polypropylene, polyvinyl chloride, an acrylic ester resin, and a varnish material. Usable writing sheet. 3. The reusable writing sheet according to claim 1, wherein the coating material is a vinyl acetate-based or vinyl chloride-based synthetic resin. 4. The vinyl acetate-based coating material comprises:
Polyvinyl acetate, ethylene vinyl alcohol copolymer,
4. The reusable writing sheet according to claim 3, wherein the vinyl chloride coating material is polyvinyl chloride. 5. A predetermined character, a symbol, a figure, and a ruled line or a combination thereof is written on at least one surface of the front and back surfaces of the paper material, and is used for writing. The reusable writing sheet body according to any one of claims 1 to 4, wherein a blank is provided.