JPH11240281A - Document holding member - Google Patents

Abstract

PROBLEM TO BE SOLVED: To form a document holding member capable of detachably readily holding memorandums, posters, and the like, and easily fastening them onto wall, glass, or the like in a held state, and further having no fouling or deterioration of documents even in a held state for a long period of time. SOLUTION: The document holding member includes a base material 1 and a film 2 connected to the base material by at least a part thereof, and the base material 1 is given document holding functions of a static attracting layer, a sucker layer, or a weak adhesive layer on its surface opposite to the film 2 so that documents are held between the base material 1 and the film 2. Also, each one rear surface of the base material 1 and film 2 is given adhering functions such as a weak adhesive layer, a sucker layer, or a magnet. Furthermore, at least one of the base material and film is transparent, thus the content of documents held therebetween can be seen through the transparent material.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a document holding member, and more particularly to a document holding member capable of holding a document for a long period of time.

[0002]

2. Description of the Related Art Conventionally, adhesives, adhesives, adhesive tapes, magnets, etc. are generally used for attaching papers, films, photographs, documents, etc. to walls, windows, bulletin boards, lockers, furniture, desks, and other articles. I use. When attaching or detaching paper or film with such an adhesive, adhesive, or adhesive tape, the paper or film may be damaged when attaching or detaching, or using a magnet is not a place where a magnet can be used to attach There was a problem that should not be.

As a solution to such a problem, there is a technology that can hold paper and the like and can be freely attached and detached by utilizing an electrostatic attraction force or a slight adhesive force (Japanese Patent Laid-Open No. 6-83266). And JP-A-6-238845).

[0004]

However, these materials cannot easily hold papers, especially papers, for a long period of time and are easy to fall off. Even if they can be held, dust and dirt adhere to them due to electrostatic attraction and adhesion. However, there has been a problem that the document and the document holding surface become dirty.

Therefore, the present invention can easily hold a document, can hold a document and the like held on a substrate for a long time, and can use a heavy document such as several sheets of paper. It is an object of the present invention to provide a document holding member capable of holding a document or the like and further preventing dust or the like from adhering to a document or a document holding surface.

[0006]

According to a first aspect of the present invention, there is provided a document holding member including a base material having a document holding function, and a film having at least a portion bonded to the base material. At least one of the material and the film is transparent.

Here, the document holding function is a function of holding a document sandwiched between a base material and a film by electrostatic attraction, weak adhesion, suction attraction, etc., on the surface of the base material facing the film. Provided. Specifically, a document holding function can be imparted by forming an electrostatic attraction layer, a weakly adhesive layer, or a suction cup layer on the surface of the substrate.

[0008] A document means a paper, a film, a thin plate, or the like that carries information such as characters, symbols, and images, and these may be laminated. By making either the substrate or the film a transparent material, these documents can be viewed from the outside.

The document holding member of the present invention is characterized in that at least one of the base material and the film has a function of attaching to another member. In the present invention, the adhesion function is a function of detachably attaching to a wall, a window glass, furniture, or the like by electrostatic attraction, weak adhesion, suction attraction, magnetic force, or the like. It is provided on the surface opposite to the surface in contact.

The document holding member of the present invention can be adhered to a wall or a window glass or peeled off, and does not stain an adherend after peeling off. Also, by bonding, the above-mentioned document can be displayed as a display object. Since the surface of the document is covered with the base material or the film, there is no adhesion of dirt due to static electricity or the like. In the case of bonding to a window glass, the contents described in documents can be viewed from the outside of the window through the window glass and the transparent material by providing a transparent material of the substrate and the film with an adhesion function.

Further, the document holding member of the present invention is characterized in that a writing layer is provided on the surface of the film or the substrate opposite to the document holding surface.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The details of the document holding member of the present invention will be described below.

FIG. 1A shows a basic structure of a document holding member according to the present invention. The document holding member 10 comprises a base material 1 and a film 2, and the base material 1 and the film 2 are partially formed. 3, the document is sandwiched between the base material 1 and the film 2 to hold the document. At least one of the substrate 1 and the film 2 is made of a transparent material, and a document can be displayed through the transparent material.

The substrate 1 is for holding a document by sucking or sticking the document and the film 2. As such a material, a substrate capable of being electrostatically adsorbed, a substrate having adhesiveness capable of being re-attached, or a substrate capable of sucking and sucking is used.

The substrate capable of electrostatic attraction is made of a material having an electrostatic attraction force by frictional charging, and any material having at least a surface holding a document having an electrostatic attraction force by frictional charging may be used. Examples of such electrostatically adsorbable materials include, for example, a polyvinyl chloride film containing an organic ketone having 40 to 60 carbon atoms, a polyvinyl chloride film containing an organic tin-based stabilizer, a polypropylene film, and the like. There is a sheet-like or plate-like thing in which an electrostatic attraction layer is formed.

As the electrostatic attraction layer, there is a porous or porous layer made of an electrostatically chargeable polymer. Such an electrostatic attraction layer has a strong electrostatic attraction force and a strong document holding power. Particularly preferred.

In order to form the electrostatic adsorption layer, there is a method of dissolving an electrostatically chargeable polymer in a solvent obtained by combining a good solvent and a poor solvent for the polymer, and coating and drying the solution on a support. In this case, the diameter of the pores can be changed by changing the ratio of the good solvent to the poor solvent, and a porous or porous layer can be formed.

The polymer capable of electrostatic charge is not particularly limited, but specific examples include acrylic resin, vinyl chloride / vinyl acetate resin, vinyl chloride / vinyl acetate / maleic acid resin, styrene / acrylic resin, and acrylic / vinyl chloride. Resin, unsaturated polyester, chlorinated rubber, vinyl acetate resin, cellulose acetate resin, ethyl cellulose resin, phenol resin, acrylonitrile / vinylidene chloride resin and the like.

In order to hold a document or the like on a substrate capable of electrostatic attraction, it is necessary to cause triboelectric charging. In order to cause triboelectric charging, triboelectric charging can be caused by rubbing documents etc. in advance, but without doing so, turning up the film bonded to the base material several times To cause peeling electrification. Also, triboelectric charging can be caused by writing or erasing on the film.

The re-adherable adhesive substrate has such adhesive strength that it can hold a document or the like and can easily remove the held document or the like. Examples of the form of the substrate include those in which a pressure-sensitive adhesive layer made of a pressure-sensitive adhesive is formed on a plate-like or film-like material.

As the pressure-sensitive adhesive for the pressure-sensitive adhesive layer, those composed of an acrylic resin, a urethane resin, a polyester resin, a silicone resin or the like can be used. In addition, commercially available adhesives for adhesive memo paper can also be suitably used.

The adhesive strength of the adhesive layer cannot be unconditionally determined depending on the material such as a document to be affixed.
0 g / inch, preferably 1 to 100 g / inch,
More preferably, it is desirable to have an adhesive strength of about 1 to 20 g / inch. In addition to adjusting the adhesive strength of the adhesive itself in order to achieve the above-mentioned peel strength, the adhesive that reduces the load on documents when detaching by attaching the adhesive partially to the surface to be adhered It is also possible to use a layer, for example, a matrix adhesive layer in which an adhesive is formed in a matrix.

The matrix adhesive layer has an adhesive layer formed in an uneven shape with an adhesive to provide a gap through which air can easily escape, so that the adhesive force can be adjusted. It is preferable because it can be attached neatly.

The base material capable of sucking and sucking is a material that sucks and holds a document by a large number of fine sucker-shaped protrusions formed on the surface of the base material. The one provided with a suction cup layer is used.

As the resin for forming the suction cup layer, a flexible and flexible resin or a resin obtained by adding a plasticizer to a resin to provide flexibility and flexibility is used. Examples of such a resin include thermoplastic resins such as polyvinyl chloride, polyvinyl acetate, and methacrylic resin, and ultraviolet or two-component reaction-curable resins mainly containing an acrylic resin or a urethane resin.

The sucker layer can be formed by adding a plasticizer or the like to these resins, if necessary, and dissolving the same in an appropriate solvent by screen printing or the like on the surface of a support such as a film or plate. . If the adhesion of the suction layer to the resin is not good due to the material of the support on which the suction layer is provided, an easy adhesion layer may be provided on the surface of the support.

The suction cup may have any shape as long as the convex portion is closed so as to surround the concave portion and can be adsorbed, and examples thereof include a circular or elliptical ring, a mesh, and a chain. The sucker layer may be provided on the entire surface except for the joint 3 of the base material,
It may be provided in a part. In addition, the above-described document holding function may be configured so that the adhesive strength to the film is increased particularly at a portion other than the portion of the base material where the document is held, for example, at the end. For example, the document holding portion is provided partially with a weak adhesive layer or a suction cup layer, and is provided only over the entire end portion. This makes it possible to protect the document held between the base material and the film from external moisture, moisture, dust and the like, and to prevent deterioration and dirt of the document as a notice.

The above-mentioned document holding function may be provided not only on one side of the substrate 1 but also on both sides. When provided on both sides, the type of document holding function may be the same or different.

Next, the film 2 is provided so as to face the surface of the substrate 1 provided with the document holding function, and the surface of the document or the substrate held between the film 1 and the substrate 1 is covered with dust or the like. It is intended to protect from adhesion of dust and the like, and by interposing a document or the like between the substrate 1 and the film 2 to supplement the holding force of the substrate which is designed to have a weak holding force so that the document can be peeled off. be able to. This is because the force holding the document itself and the force holding the film on the substrate are obtained as the force holding the document,
This is because documents can be held by both forces.

Therefore, the film may be a single film as long as it can cover the holding surface of the substrate, or may be a film in which two or more films are arranged. Furthermore, when using a substrate having a document holding function on both sides as a substrate,
Films may be arranged on both sides.

As the film, a resin sheet such as polyester, polyethylene, polycarbonate, polyvinyl chloride, polyvinylidene chloride, polyacrylonitrile, ABS, nylon, polypropylene, and polystyrene can be used.

The thicknesses of the film and the substrate are not particularly limited.
About m is appropriate. If one is in this range, the other may be about the same thickness or thicker.

At least one of the substrate 1 and the film 2
It is transparent enough to read characters such as documents held. For example, when a substrate having a porous or porous electrostatic adsorption layer made of an electrostatically chargeable polymer is used as the base material 1 or when the transparency of the adhesive layer is low, a transparent film is used as the film 2. It is necessary. When the substrate 1 itself has such a degree of transparency that characters such as documents can be read, the film 2 may be white or may be appropriately colored.

In the case where a pressure-sensitive adhesive layer or a suction cup layer is provided on a transparent support as a base material, it can be made transparent by using a transparent material as a material for forming the pressure-sensitive adhesive layer or suction cup layer. Further, when a film having an electrostatic attraction force is used as a substrate capable of electrostatic attraction, the film can be made transparent.

Base material 1 and film 2 bonded thereto
By using at least one of the materials having transparency, a document can be displayed as a display object.

Further, the document holding member of the present invention has a function (adhesion) for adhering to one of the base material 1 and the film 2 to the other member so as to be easily installed on another member such as a wall or a window glass. Function) is preferably provided. Such an adhesion function is provided by providing an electrostatic adsorption layer, an adhesive layer, a suction cup layer, or a magnetic layer on the outer surface of the substrate 1 or the film 2, that is, the surface opposite to the surface on which the document is sandwiched. it can.

As in the case of the above-mentioned electrostatically adsorbable substrate, the electrostatically adsorbing layer may be constituted by forming the substrate 1 or the film 2 from a film made of a polymer which can be electrostatically charged, or by forming the substrate 1 or the film 2 A porous layer or a porous layer made of an electrostatically chargeable polymer may be provided on the surface. When an electrostatic attraction layer is provided on the surface outside the base material 1, an electrostatic attraction force is generated inside the base material 1, and this is used as a document holding function of the base material. Is also possible.

For the pressure-sensitive adhesive layer and the suction cup layer,
The same configuration as the configuration described as the document holding function can be adopted. For example, a matrix adhesive layer can be provided on the outer surface of the substrate 1 or the film 2 as a removable adhesive layer, or a suction layer made of a flexible and flexible resin can be provided.

The magnetic layer is formed by coating a substrate or film with a mixture of ferromagnetic powder generally used as a magnet material in a plastic or rubber, or laminating a film into which ferromagnetic powder is kneaded. And the like. It is also possible to form a ferromagnetic material directly by vapor deposition or the like.

The layer for imparting the above-mentioned adhesion function includes:
It may be provided on the entire outer surface of the base material 1 or the film 2, or may be provided on a part of the surface, such as along four corners or two sides.

In the document holding member of the present invention, a writing layer can be further provided on the outer surface of the substrate 1 and / or the film 2. The writing layer is a layer for an adhesion function to other members described above (electrostatic attraction layer, adhesive layer, sucker layer, magnetic layer).
Is provided on the material on which no is formed. By providing such a writing layer, characters and the like can be written on the surface of the substrate or the film. In particular, when the material on which the writing layer is provided is a transparent substrate or a transparent film, the user writes on the document without smearing the document from above the transparent material while visually checking the document sandwiched between the film and the substrate. be able to.

As the writing layer, a conventionally known water-based or oil-based pen can be used, and a whiteboard writing layer that can be erased by wiping or a layer that can be written with white ink and a layer that can be written with black ink that can be erased by wiping, a pencil or a pen can be used. There is a trace layer that can be written in.

Further, the surface of the film 2 or the substrate 1 facing the document can be subjected to a transfer prevention treatment so that the transfer of ink or toner printed on the document or the like does not occur.

Each of the above-mentioned layers may be provided with a function of blocking ultraviolet rays in order to prevent deterioration due to ultraviolet rays, and may be provided with antibacterial properties in order to prevent the growth of bacteria and the like.

When each of the above-mentioned layers is formed by coating, a coating solution obtained by dissolving or dispersing each of the above-mentioned resins in an appropriate solvent is applied to, for example, a bar coater, gravure coater, curtain coater, roll coater, blade coater or the like. It can be formed by coating and drying with an appropriate coating device.

As described above, the document holding member of the present invention is designed to prevent the film from coming off when the film is turned up or from being displaced from a position where the document holding surface of the base material can be covered. In order to do so, the film and the substrate are joined at least in part.

As a method of joining the base material and the film in a part, for example, one end or two ends of the film may be joined to the base material. Alternatively, a method such as bonding to a substrate can be used. Furthermore, the part to be joined is the upper end of the base material,
It may be anywhere, such as the right end or the left end, and may be configured to be joined on the back surface of the base material and to turn the film back to the front surface of the base material.

Other examples of the case where two or more films are arranged side by side include two films arranged side by side,
For example, two sheets may be arranged vertically, or two sheets may be arranged vertically and two sheets may be arranged horizontally and joined.

The means for bonding the document holding surface of the base material to the film may be a method of bonding with a pressure-sensitive adhesive, an adhesive, a double-sided tape, or the like, or a method of bonding the film or the base with heat fusion, ultrasonic fusion, a solvent, or the like. There is a method such as dissolving a part of the material.

The document holding member of the present invention comprises the base material 1 and the film 2 described above.
As shown in (a), each of them may be used one by one, but a plurality of base materials 1 and / or films 2 may be used. For example, when two films 2 are stacked as shown in FIG. 1B, a document is sandwiched between the substrate 1 and the film 2 and the information of the document and the information written on the film 2 are fixed information. , It is possible to further write on the film 2 ′ superimposed thereon.

The above-described substrate and film can be combined in any manner, and the combination can be used in various ways. For example, when the substrate 1 is provided with a function of attaching to another member and a transparent film is used as the film 2, the document holding member is attached to an arbitrary wall surface to display the contents of the document from the transparent film side. be able to. Further, for example, when a transparent one of the base material 1 and the film 2 is provided with an adhesion function to another member, the document holding member is attached to a transparent material such as a window glass to be held through the window glass. The contents of the document can be displayed.

FIG. 2 illustrates some of the various combinations, but the document holding member of the present invention is not limited to these. (a) shows a white substrate 1 having an electrostatic attraction layer 4 provided on one surface and a weak adhesive layer, a suction layer or a magnetic layer 5 provided on the opposite surface, and electrostatic attraction of the substrate 1 The document D is held between the substrate 1 and the film 2 by the electrostatic attraction layer 4 with a document holding member including the transparent film 2 bonded to the layer 4 side. The document holding member is adhered to a wall or the like by a weak adhesive layer, a suction layer or a magnetic material layer 5 to form a transparent film 2.
You can see the contents of the documents through. In the case of a magnetic layer, it is attached to a metal signboard, a locker, or the like by magnetic force.

(B) is a white substrate 1 provided with an electrostatic attraction layer 4
And a transparent film 2 having a matrix adhesive layer or a sucker layer 6 on the outer surface. The transparent film 2 side is attached to a transparent member such as a window glass, and the contents of the document are viewed through the glass. be able to.

(C) is a matrix adhesive layer or sucker layer 6
A document holding member composed of a transparent substrate 1 provided with a transparent film 2 and a transparent film 2 bonded to the matrix adhesive layer or sucker layer 6 so as to face the transparent substrate 1 and the transparent film 2 from either side. You can see the contents of the documents held in between.

(D) is a document holding member comprising a substrate 1 having an electrostatic attraction layer 4 provided on one surface and a transparent film 2 bonded to the surface of the substrate opposite to the electrostatic attraction layer. Then, it is attached to a wall or the like by the electrostatic attraction of the electrostatic attraction layer. This document holding member can also hold a document sandwiched between the substrate 1 and the film 2 by an electrostatic attraction force of the electrostatic attraction layer adhering to a wall or the like.

(E) shows a substrate 1 having an electrostatic attraction layer 4 on both sides.
And two transparent films 2, 2 'bonded to both sides of the base material, respectively. One transparent film 2 has a matrix adhesive layer or a sucker layer 6 formed on the outer surface. ing. This document holding member is made of a substrate 1
The document D1 is sandwiched between one side of the transparent film 2 and the transparent film 2 and the document D2 is also sandwiched between the other side and the transparent film 2 ', and adheres to the window glass or the like by the matrix adhesive layer or the suction layer 6 of the transparent film 2. Let it. The document D1 can be seen through a window glass or the like, and the document D2 can be seen on the other side through the transparent film 2 '.

[0057]

The present invention will be described in more detail by way of examples. Note that “parts” and “%” are based on weight unless otherwise specified.

[Example 1] The following coating liquid for a crosslinked cured resin layer was applied to one surface of a transparent polyester film kneaded with a 50 µm ultraviolet absorbent with a Mayer bar, and dried.
A transparent film having a white board writing layer having a thickness of 4 μm was produced in the size of A4 by irradiating ultraviolet rays from the coated surface with a high-pressure mercury lamp for 1 to 2 seconds.

<Coating liquid for crosslinked cured resin layer> UV curable resin 26 parts (Unitic 17-824-9: Dainippon Ink & Chemicals, Inc.) Methyl ethyl ketone 17 parts Toluene 17 parts Ethyl cellosolve 17 parts Initiator (Dilka Cure 184) 0.63 parts On the other hand, the following coating solution for an electrostatic adsorption layer was applied to one surface of a 100 μm polyester film using a Meyer bar, and then dried at 60 ° C. for 5 minutes to obtain a thickness of 6 μm, average An electrostatic adsorption layer of a porous film having an open hole of 2 μm was formed, and a substrate of A4 size capable of electrostatic adsorption was obtained.

<Coating Solution for Electrostatic Adsorption Layer> Acrylic resin (Acryhase MM428: Fujikura Kasei Co., Ltd.) 5 parts Ethanol 50 parts 1,1,1-trichloroethylene 45 parts Next, the whiteboard writing layer of the transparent film was prepared. Using a double-sided adhesive tape having a width of about 1 cm, the surface of the electrostatically adsorbable layer of the substrate capable of being electrostatically attracted was adhered to one side of the back surface to obtain a document holding member.

The substrate surface of the obtained document holding member was attached to a wall using a commercially available matrix adhesive sheet.

On the document holding member obtained as described above, a memo paper having a size of about B5
After being turned up three times, it was sandwiched and held between the substrate and the transparent film. The memo paper held is covered with a transparent film, so that the contents of the memo can be read and written with a whiteboard marker (Board Fax Marker: Plus Kogyosha). It was possible and easy to erase. Also,
I could write on the memo paper covered with the transparent film, so I could add it without soiling the memo paper.

The memo paper did not fall even after three months due to two kinds of forces, the force by which the base material held the memo paper and the force by which the base material held the transparent film.

Example 2 One side of a 50 μm transparent polyester film was coated with the following coating liquid for a crosslinked cured resin layer using a Mayer bar, dried, and irradiated with ultraviolet light for 1 to 2 seconds using a high pressure mercury lamp to obtain a thickness. Two transparent films having a size of A4 were produced with a 4 μm whiteboard writing layer.

<Coating liquid for crosslinked cured resin layer> UV curable resin 26 parts (Unitic 17-824-9: Dainippon Ink & Chemicals, Inc.) Methyl ethyl ketone 17 parts Toluene 17 parts Ethyl cellosolve 17 parts Initiator (Dilka Cure 184) : Ciba Geigy) 0.63 parts On the other hand, a liquid silicone rubber (TSE3033: Toshiba Silicone Co., Ltd.) as an additional two-component is applied to one side of a 100 μm polyester film with a Mayer bar, and then dried.
An adhesive layer having a thickness of 15 μm was formed, and a re-attachable base material having a size of A3 was obtained.

Next, using a double-sided adhesive tape of about 1 cm width on one side of the back side of the whiteboard writing layer of the transparent film, two sheets are arranged side by side and can be re-adhered so as to form A3. And a document holding member was obtained.

The substrate surface of the obtained document holding member was attached to a wall using a commercially available matrix adhesive sheet.

In the document holding member obtained as described above, memo paper having a size of about B5 was sandwiched and held between the base material and the transparent film. The memo paper held is covered with a transparent film, so that the contents of the memo can be read and written with a whiteboard marker (Board Fax Marker: Plus Kogyosha). It was possible and easy to erase. In addition, writing can be performed on the memo paper covered with the transparent film, so that the memo paper can be added without being stained.

Further, since the adhesive strength between the plain paper for PPC and the base material was appropriate at a peel strength of 5 g / inch, the memo paper could be easily peeled without being damaged when the memo paper was peeled.

The memo paper did not fall even after three months due to two types of forces, the force by which the substrate held the memo paper and the force by which the substrate held the transparent film. Example 3 A substrate on which an electrostatic attraction layer was formed was prepared in the same manner as in Example 1. On the other hand, on one side of a 50 μm transparent polyester film kneaded with an ultraviolet absorber, a 150-mesh screen printing was performed using a commercially available ultraviolet-curable ink (UV QVN screen ink: Teikoku Ink Mfg. Co., Ltd.) to form a circular ring (diameter approx. A number of suction cups (5 mm) were formed. The suction cup was cured by irradiation with a metal halide lamp to form a suction cup layer.

With the electrostatic attraction layer surface of the base material and the surface of the transparent film on which the suction layer is not formed facing each other, both sides are bonded together using a double-sided adhesive tape of about 1 cm to obtain a document holding member. Was.

To the document holding member obtained as described above, a memo paper having a size of about B5
After being turned up three times, it was sandwiched and held between the substrate and the transparent film. Next, the sucker layer of the transparent film was adsorbed to the window glass. The contents of the memo could be read through window glass and transparencies.

The memo paper did not fall even after three months due to two kinds of forces, that is, the force of the substrate holding the memo paper and the force of the substrate holding the transparent film.

Example 4 The same coating solution for an electrostatic attraction layer as in Example 1 was applied to both sides of a 75 μm white polyester film using a Mayer bar.
After drying for a minute, an electrostatic adsorption layer of a porous film having a thickness of 6 μm and an average of 2 μm and having open pores was formed, and a substrate capable of electrostatic adsorption on both surfaces was obtained.

On the other hand, a circular ring-shaped (about 5 mm diameter) suction cup was formed on one side of a 10 μm transparent polyester film using a commercially available ultraviolet curable ink (UV QVN screen ink: Teikoku Ink Mfg. Co., Ltd.) in the same manner as in Example 3. Formed a number of suction cup layers.

The transparent film having the sucker layer formed thereon was bonded to one surface of the base material such that the sucker layer was located outside, and a 10 μm transparent polyester film was bonded to the other surface of the base material. A structured document holding member was obtained.
As for the bonding of the substrate and each transparent film, one side was bonded using a double-sided adhesive tape of about 1 cm in the same manner as in Example 1.

After turning the transparent film up and down two or three times on the document holding member obtained as described above, a memo paper having a size of about B5 was sandwiched and held between the base material and the transparent film. Next, the memo paper was similarly sandwiched and held between the transparent film on which the suction cup layer was formed and the substrate. The sucker layer was adsorbed on glass so that the contents of one note could be read through the glass and the contents of the other note could be read through the transparent film.

The memo paper did not fall even after three months due to two kinds of forces, that is, the force of the base material holding the memo paper and the force of the base material holding the transparent film.

[0079]

The document holding member of the present invention can easily hold a document.

By sandwiching the document between the substrate and the film, the substrate can use the force for holding the film rather than holding the document alone, so that the document can be held for a long time. It can hold heavy objects such as several layers.

Further, it is possible to prevent dust or the like from adhering to the original or document holding surface. In particular, by providing at least one of the base material and the film with an ultraviolet blocking function, deterioration of the document can be prevented.

Further, in the case of using a substrate having an electrostatic attraction force, the document holding member of the present invention is charged when the film is turned up. There is no need to charge by rubbing.

Since the base material has an appropriate holding force, when the film is turned up, a document or the like does not stick to the film or drop.

Further, when the writing material is provided on a transparent material of the base material or the film, writing can be performed on the document or other portions.

When the surface of the substrate opposite to the surface holding the document is provided with a function of adhering to other members, it can be easily adhered and fixed to any place.

[Brief description of the drawings]

FIG. 1 is a diagram showing an embodiment of a document holding member of the present invention.

FIG. 2 is a view showing various forms of a document holding member of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Base material 2 2 '... Film 3 ... Joining part 4 ... Electrostatic adsorption layer 5 ... Weak adhesion layer, sucker layer or magnetic layer 6 ... Matrix adhesion layer or Sucker layer 10 ・ ・ ・ Document holding member

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification code FI G09F 15/00 G09F 15/00 N

Claims (17)

[Claims] 1. A document holding member comprising: a base material having a document holding function; and a film having at least a part joined to the base material, wherein at least one of the base material and the film is transparent. 2. The document holding member according to claim 1, wherein said base material is a base material capable of electrostatic attraction. 3. The document holding member according to claim 2, wherein the substrate has an electrostatic attraction layer formed on at least a surface facing the film. 4. The document holding member according to claim 1, wherein the base material has a weak adhesive layer formed on at least a surface facing the film. 5. The sucker layer according to claim 1, wherein the base material has a suction layer formed by arranging a large number of fine suction cup-shaped protrusions on at least a surface facing the film. Document holding member. 6. The document holding device according to claim 1, wherein the substrate has a function of attaching to another member on a surface opposite to a surface facing the film. Element. 7. The document holding member according to claim 6, wherein the substrate has a weak adhesive layer formed on a surface opposite to a surface facing the film. 8. A suction layer formed by arranging a number of fine suction cup-shaped projections on a surface opposite to a surface facing the film. 6. The document holding member according to 6. 9. The document holding member according to claim 6, wherein the substrate has an electrostatic attraction layer formed on a surface opposite to a surface facing the film. 10. The document holding member according to claim 6, wherein the base material has a magnetic layer adhered to a surface opposite to a surface facing the film. 11. The document holding apparatus according to claim 1, wherein the film has a function of attaching to another member on a surface opposite to a surface facing the base material. Element. 12. The document holding member according to claim 11, wherein the film has a weak adhesive layer formed on a surface opposite to a surface facing the substrate. 13. The document holding member according to claim 11, wherein said film has an electrostatic attraction layer formed on a surface opposite to a surface facing said base material. 14. The film according to claim 11, wherein a suction layer formed by arranging a large number of fine suction cup-shaped projections is formed on a surface opposite to a surface facing the base material. Document holding member described. 15. The document holding member according to claim 11, wherein the film has a magnetic layer adhered to a surface opposite to a surface facing the base material. 16. The document holding member according to claim 1, wherein a writing layer is provided on at least a part of a surface of the film opposite to a surface facing the base material. 17. The document holding member according to claim 1, wherein a writing layer is provided on at least a part of a surface of the substrate opposite to a surface facing the film.