JP2008211169A - Sheet-like magnetic substance and its manufacturing method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sheet-like magnetic substance capable of protecting the surface of a sheet-like resin substance from friction, etc. <P>SOLUTION: The sheet-like magnetic substance includes the sheet-like resin substance 2, a magnetic layer 3 which contains at least soft magnetic metal magnetic powder and bonding material and is formed on one surface of the resin substance 2, and a hard coat layer 4 formed on the other surface of the resin substance 2. An adhesives layer 5 is formed on the reverse surface side of the contact surface with the resin substance 2 in the magnetic layer 3, and further a release paper 6 is stuck on the surface of the adhesives layer 5. Thereby the other surface of the resin substance 2 is protected from friction, etc. by the hard coat layer 4. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a sheet-like magnetic body that shields electromagnetic waves and a method for producing the same.

As this type of sheet-like magnetic body, a sheet-like magnetic body (electromagnetic wave shielding material) disclosed in JP-A-9-116293 is known. In this sheet-like magnetic body, the back surface of a sheet-like resin body (plastic film) is covered with a vapor-deposited layer of a conductive material, and an adhesive is applied to the back surface of the vapor-deposited layer, and a release paper is applied to the surface of this adhesive agent. It is formed by sticking. In this sheet-like magnetic body, peel off the release paper on the back side of the sheet-like resin body, attach it to the member to be constructed with grounding, and if necessary, simply apply wallpaper to the surface with an adhesive Is completed. Moreover, in the case where the surface of the sheet-like resin body is subjected to pattern printing, it is not necessary to attach wallpaper further, and the construction is completed as it is. Therefore, according to this sheet-like magnetic body, the construction cost can be reduced.
JP-A-9-116293 (page 3, FIG. 1)

  However, the above sheet-like magnetic body has the following problems. That is, in this sheet-like magnetic body, the surface of the sheet-like resin body is exposed. For this reason, the sheet-like magnetic body has problems that the surface of the sheet-like resin body itself is damaged by rubbing or the like, and the pattern printing applied to the surface becomes thin or disappears. .

  The present invention has been made in view of such problems, and a sheet-like magnetic body capable of protecting at least one of the surface of a sheet-like resin body and a printed portion formed on the surface from rubbing, and the production thereof The main purpose is to provide a method.

  In order to achieve the above object, a sheet-like magnetic body according to the present invention includes a sheet-like resin body, a magnetic layer formed on one surface of the resin body, including at least a soft magnetic metal magnetic powder and a binder. And a hard coat layer formed on the other surface of the resin body.

  In the sheet-like magnetic body according to the present invention, the hard coat layer has translucency, and ink is printed on the other surface of the resin body to include at least one of characters, symbols, and figures. A portion is formed, and the hard coat layer is formed on the other surface of the resin body so as to cover the printing portion.

  Further, in the sheet-like magnetic body according to the present invention, the resin body and the hard coat layer have translucency, and ink is printed on the one surface of the resin body so that at least one of characters, symbols, and figures A printing part including one kind is formed, and the magnetic layer is formed on the one surface of the resin body so as to cover the printing part.

  The sheet-like magnetic body according to the present invention includes a sheet-like resin body, a magnetic layer formed on one surface of the resin body including at least a soft magnetic metal magnetic powder and a binder, and the magnetic layer And a hard coat layer formed on the back surface of the contact surface with the resin body.

  Further, in the sheet-like magnetic body according to the present invention, the hard coat layer has translucency, and an ink is printed on the back surface of the magnetic layer to include a printing unit including at least one of characters, symbols, and figures. The hard coat layer is formed on the back surface of the magnetic layer so as to cover the printing portion.

  In addition, the sheet-like magnetic body according to the present invention includes a sheet-like resin body, at least a soft magnetic metal magnetic powder, and a binder, and a magnetic layer formed on one surface and the other surface of the resin body, respectively. And a hard coat layer formed on the back surface of the contact surface with the resin body in one of the magnetic layers.

  In the sheet-like magnetic material according to the present invention, the hard coat layer has translucency, and ink is printed on the back surface of the one magnetic layer to include at least one of characters, symbols, and figures. The hard coat layer is formed on the back surface of the magnetic layer so as to cover the printing portion.

  In the sheet-like magnetic body according to the present invention, an adhesive layer is formed on the back side of the contact surface with the resin body in the magnetic layer.

  Furthermore, in the sheet-like magnetic body according to the present invention, an adhesive layer is formed on the other surface side of the resin body.

  In the sheet-like magnetic body according to the present invention, an adhesive layer is formed on the back side of the contact surface with the resin body in the other of the two magnetic layers.

  In the sheet-like magnetic body according to the present invention, a release paper is attached to the surface of the adhesive layer.

  In the method for producing a sheet-like magnetic body according to the present invention, a magnetic layer is formed on one surface of a sheet-like resin body, and then a hard coat layer is formed on the other surface of the resin body, An adhesive layer and release paper are laminated in this order on the surface of the magnetic layer to produce a sheet-like magnetic body.

  In the method for producing a sheet-like magnetic body according to the present invention, a magnetic layer is formed on one surface of a sheet-like resin body, and then ink is printed on the other surface of the resin body, so that characters and symbols are printed. And a printed part including at least one of the figures, and subsequently forming a hard coat layer on the other surface of the resin body, and then placing an adhesive layer and release paper on the surface of the magnetic layer in this order. A sheet-like magnetic body is manufactured by laminating the layers.

  Further, in the method for producing a sheet-like magnetic body according to the present invention, ink is printed on one surface of the sheet-like resin body to form a printing unit including at least one of characters, symbols, and figures, A magnetic layer is formed on one surface of the resin body, a hard coat layer is subsequently formed on the other surface of the resin body, and then an adhesive layer and a release paper are formed on the surface of the magnetic layer in this order. A sheet-like magnetic body is manufactured by laminating the layers.

  Further, in the method for producing a sheet-like magnetic body according to the present invention, a magnetic layer is formed on one surface of the sheet-like resin body, and then a hard coat layer is formed on the surface of the magnetic layer. A sheet-like magnetic body is manufactured by laminating an adhesive layer and release paper in this order on the other surface of the resin body.

  Furthermore, in the method for producing a sheet-like magnetic body according to the present invention, a magnetic layer is formed on one surface of a sheet-like resin body, and then ink is printed on the surface of the magnetic layer, so that characters, symbols, and figures are printed. Forming a printing portion including at least one of the above, subsequently forming a hard coat layer on the surface of the magnetic layer, and then forming an adhesive layer and release paper on the surface of the magnetic layer on the other surface of the resin body. Are laminated in this order to produce a sheet-like magnetic body.

  Moreover, the method for producing a sheet-like magnetic body according to the present invention includes forming a magnetic layer on one surface of the sheet-like resin body, then forming a magnetic layer on the other surface of the resin body, A hard coat layer is formed on one surface of both magnetic layers, and then an adhesive layer and release paper are laminated in this order on the other surface of both magnetic layers to form a sheet-like magnetic body. To manufacture.

  Moreover, the method for producing a sheet-like magnetic body according to the present invention includes forming a magnetic layer on one surface of the sheet-like resin body, then forming a magnetic layer on the other surface of the resin body, Ink is printed on one surface of both magnetic layers to form a printed portion including at least one of characters, symbols, and figures, and then a hard coat layer is formed on the surface of the one magnetic layer Subsequently, a sheet-like magnetic body is manufactured by laminating an adhesive layer and release paper in this order on the other surface of the magnetic layers.

  In the sheet-like magnetic body according to the present invention, a hard coat layer is formed on the surface of the sheet-like magnetic body. Therefore, according to the sheet-like magnetic body, the hard coat layer can protect the surface of the resin body from rubbing and the like, and the hard coat layer itself is resistant to rubbing and is not easily scratched. It is possible to greatly reduce the damage to the surface of the surface. Moreover, according to the method for producing a sheet-like magnetic body according to the present invention, such a sheet-like magnetic body can be produced easily and reliably.

  Further, in the sheet-like magnetic body according to the present invention, a printed portion is formed on the surface of the resin body, and a hard coat layer having translucency is formed on the surface of the resin body so as to cover the printed portion. . Therefore, according to this sheet-like magnetic body, the printed part is not directly exposed on the surface of the sheet-like magnetic body, and therefore, the surface of the resin body can be protected and the rubbing against the printed part can be prevented. Further, it is possible to reliably prevent the printed part from being scratched or peeled off. Moreover, according to the method for producing a sheet-like magnetic body according to the present invention, such a sheet-like magnetic body can be produced easily and reliably.

  Further, in the sheet-like magnetic body according to the present invention, a printed part is formed on the surface of the resin body having translucency, and the hard coat layer having translucency covers the printed part. It is formed on this surface. Therefore, according to this sheet-like magnetic body, the printed part is not directly exposed on the surface of the sheet-like magnetic body, and therefore, the surface of the resin body can be protected and the rubbing against the printed part can be prevented. Further, it is possible to reliably prevent the printed part from being scratched or peeled off. Moreover, according to the method for producing a sheet-like magnetic body according to the present invention, such a sheet-like magnetic body can be produced easily and reliably.

  In the sheet-like magnetic body according to the present invention, a hard coat layer is formed on the back surface of the magnetic layer in contact with the resin body. Therefore, according to this sheet-like magnetic body, the hard coat layer can protect the surface of the magnetic layer from rubbing and the like, and the hard coat layer itself is resistant to rubbing and is not easily scratched. It is possible to greatly reduce the damage to the surface of the surface. Moreover, according to the method for producing a sheet-like magnetic body according to the present invention, such a sheet-like magnetic body can be produced easily and reliably.

  Furthermore, in the sheet-like magnetic body according to the present invention, the printed portion is formed on the back surface of the magnetic layer in contact with the resin body, and the hard coat layer having translucency covers the printed portion. It is formed on the back surface. Therefore, according to this sheet-like magnetic body, the printed portion is not directly exposed on the surface of the sheet-like magnetic body, and therefore, the surface of the magnetic layer can be protected and the rubbing against the printed portion can be prevented. Further, it is possible to reliably prevent the printed part from being scratched or peeled off. Moreover, according to the method for producing a sheet-like magnetic body according to the present invention, such a sheet-like magnetic body can be produced easily and reliably.

  In the sheet-like magnetic body according to the present invention, the hard coat layer is formed on the back surface of the contact surface with the resin body in one of the magnetic layers formed on one surface and the other surface of the resin body, respectively. Yes. Therefore, the above-described surface protection of the magnetic layer can be realized, and the magnetic layer is formed on both surfaces of the resin body, so that the electromagnetic wave shielding characteristics can be sufficiently enhanced. Moreover, according to the method for producing a sheet-like magnetic body according to the present invention, such a sheet-like magnetic body can be produced easily and reliably.

  Moreover, in the sheet-like magnetic body according to the present invention, a printing portion is formed on the back surface of the contact surface with the resin body in one of the two magnetic layers formed on both surfaces of the resin body, and thus has translucency. A hard coat layer is formed on the back surface of the magnetic layer so as to cover the printed portion. Therefore, according to the sheet-like magnetic body, the surface of the magnetic layer can be protected and the printed portion can be scratched or peeled, and the magnetic layer is formed on both surfaces of the resin body. Electromagnetic shielding properties can be sufficiently enhanced. Moreover, according to the method for producing a sheet-like magnetic body according to the present invention, such a sheet-like magnetic body can be produced easily and reliably.

  Moreover, according to the sheet-like magnetic body according to the present invention, the adhesive layer is formed on the back side of the contact surface of the magnetic layer with the translucent resin body, so that it is easy for the target product to suppress electromagnetic interference. Can be pasted on.

  Furthermore, according to the sheet-like magnetic body according to the present invention, since the adhesive layer is formed on the other surface side of the resin body, it can be easily attached to a target product for suppressing electromagnetic interference.

  Further, according to the sheet-like magnetic body according to the present invention, by forming the adhesive layer on the back surface side of the contact surface with the resin body in the other of the two magnetic layers respectively formed on both surfaces of the resin body, It can be easily affixed to a target product for suppressing electromagnetic interference.

  In addition, according to the sheet-like magnetic body according to the present invention, the sheet-like magnetic body can be stored, for example, by stacking the sheet-like magnetic body by attaching release paper to the surface of the adhesive layer. The property can be improved.

  Hereinafter, the best mode of a sheet-like magnetic body and a method for producing a sheet-like magnetic body according to the present invention will be described with reference to the accompanying drawings. As an example, a sheet-like magnetic body attached to a card case for preventing skimming of information recorded on a credit card or the like will be described as an example.

  Initially, the structure of the sheet-like magnetic body 1 is demonstrated with reference to drawings.

  A sheet-like magnetic body 1 shown in FIG. 1 is a sheet-like magnetic body that suppresses electromagnetic interference and shields electromagnetic waves. As shown in FIG. 1, a sheet-like resin body 2, a magnetic layer 3, a hard coat layer 4, an adhesive layer 5 and a release paper 6 are provided. In this case, as an example, the resin body 2 is made of a PET film whose thickness is defined within a range of 10 μm to 100 μm as an example.

  For example, the magnetic layer 3 is formed by applying a composite magnetic material paste formed by mixing and stirring a soft magnetic metal magnetic powder to a binder mainly composed of a resin or the like on one surface of the resin body 2 and then drying. By doing so, it is formed as a composite magnetic layer. In this case, ferrite, sendust, soft magnetic amorphous alloy, soft magnetic alloy, etc. can be used as the soft magnetic metal magnetic powder, and thermoplastic resin, thermosetting resin, ultraviolet curable resin can be used as the binder. An electron beam curable resin or a mixture thereof is used. Specifically, polyamide resin, polyether ketone resin, vinyl chloride resin, polyester resin, epoxy resin, acrylic resin, urethane resin, cellulose resin, vinyl acetate resin, polycarbonate resin, and the like. In addition to these polymers, monomers and oligomers can also be used. Further, the filling amount of the soft magnetic metal magnetic powder is not particularly limited, but is preferably 70% by weight or more from the viewpoint of the electromagnetic interference suppression effect, and in order to ensure the necessary flexibility in the sheet-like magnetic body 1 Is preferably 95% by weight or less. The magnetic layer 3 is formed with a thickness in the range of about 40 μm to 100 μm as an example. As a result, the magnetic layer 3 exhibits a high electromagnetic interference suppressing effect.

  The hard coat layer 4 is formed by applying a liquid obtained by dissolving a hard coat agent in a solvent as necessary to the other surface of the resin body 2, drying it, and curing it. The hard coat agent is not particularly limited, and various known hard coat agents can be used. For example, UV curing of a type that cures thermosetting hard coat agents such as siloxane resins, monomers and oligomers such as ester, acrylic, urethane, amide, silicone, and epoxy with a photopolymerization initiator. Type hard coat agents, and composite ultraviolet curable hard coat agents of monomers and oligomers such as acrylic / urethane type and acrylic / epoxy type can be used. The hard coat agent is applied by a known method such as a roll coater such as a gravure cylinder, reverse, or Mayer bar, or a slit die coater. In the case of a thermosetting hard coat agent, for example, it is cured at a temperature in the range of room temperature to 100 ° C. or less. In the case of an ultraviolet curable hard coat agent, it is cured by irradiating with ultraviolet rays. The thickness of the hard coat layer 4 is, for example, in the range of 0.1 μm to 20 μm.

  As an example, the adhesive layer 5 is formed by attaching a double-sided tape (manufactured by Teraoka Seisakusho: No. 707) to the surface of the magnetic layer 3. In this case, the adhesive layer 5 is preferably as thin as possible in order to suppress the thickness of the sheet-like magnetic body 1. The adhesive layer 5 may be formed by applying an adhesive instead of the double-sided tape. The release paper 6 is made of paper or PET film and is attached to the surface of the adhesive layer 5.

  Next, the manufacturing method of the sheet-like magnetic body 1 is demonstrated.

  First, while pulling out a long and belt-like resin body 2 wound around a film delivery roll (not shown), the composite magnetic material paste prepared as described above is applied to the resin body 2 from a magnetic material coating apparatus (not shown). The magnetic layer 3 is formed on this one surface by applying it on one surface (magnetic layer forming step). Next, a drying device (not shown) disposed downstream of the magnetic material coating device dries the formed magnetic layer 3 (drying process). Subsequently, a hard coat layer 4 is formed on the other surface of the resin body 2 by applying a hard coat agent to the other surface of the resin body 2 from a hard coat agent applicator (not shown) disposed downstream of the drying device. (Hard coat layer forming step). Next, a curing device (not shown) disposed downstream of the hard coat agent coating device cures the formed hard coat layer 4 (curing step).

  Next, while pulling out a double-sided tape (manufactured by Teraoka Seisakusho: No. 707) having release paper 6 attached in advance on one surface from a double-sided tape supply roll (not shown), the magnetic layer 3 in the resin body 2 is placed on the other surface. Affixed to the formed one surface side (that is, the surface of the magnetic layer 3), the double-sided tape and the release paper 6 are integrated with the resin body 2 (adhesive layer forming step). Thereby, the adhesive layer 5 by the double-sided tape is formed on the surface of the magnetic layer 3 formed on the resin body 2, and the release paper 6 is formed on the surface of the adhesive layer 5 (that is, the magnetic layer 3). Adhesive layer 5 and release paper 6 are laminated on the surface in this order), and a long belt-like sheet-like magnetic body is produced. In this case, as a method for integrating the double-sided tape with the release paper 6 and the resin body 2 on which the magnetic layer 3 and the like are formed, for example, a pair of pinch rolls (not shown) is provided on the downstream side of the drying device. And a resin body 2 on which the magnetic layer 3 and the like are formed can be supplied between a pair of pinch rolls and passed therethrough. . Finally, a long belt-like sheet-like magnetic body is cut according to the shape and size of the card case (cutting step). Thereby, the sheet-like magnetic body 1 shown in FIG. 1 is manufactured.

  Thus, in this sheet-like magnetic body 1, when the release paper 6 is peeled off and the sheet-like magnetic body 1 is attached, the hard coat layer 4 is formed on the other surface of the resin body 2 on the front side. Yes. Therefore, according to the sheet-like magnetic body 1, the hard coat layer 4 can protect the surface of the resin body 2 from rubbing and the like, and the hard coat layer 4 itself is resistant to rubbing and is not easily damaged. Damage to the surface of the magnetic body 1 itself can be greatly reduced.

  Further, according to the sheet-like magnetic body 1, the adhesive layer 5 is formed on the back side of the contact surface of the magnetic layer 3 with the resin body 2, so that the target product itself that needs to be shielded from electromagnetic waves (this book) In the example, it can be easily affixed to a credit card) or a storage body (in this example, a card case) for storing the target product, whereby an electromagnetic wave shielding function can be easily imparted to the card case.

  Further, according to the sheet-like magnetic body 1, the sheet-like magnetic body 1 can be stored by being laminated with the release paper 6 on the surface of the adhesive layer 5, and the like. It is possible to improve the storage stability.

  In addition, this invention is not limited to said structure. For example, the printing part 7 can also be formed on the surface of the resin body 2 like the sheet-like magnetic bodies 1A and 1B shown in FIGS.

  First, the structure of the sheet-like magnetic body 1A will be described with reference to FIG. In addition, about the structure same as the sheet-like magnetic body 1, the same code | symbol is attached | subjected and the overlapping description is abbreviate | omitted.

  As shown in FIG. 2, the sheet-like magnetic body 1 </ b> A includes a sheet-like resin body 2, a magnetic layer 3, a hard coat layer 4, an adhesive layer 5, a release paper 6, and a printing unit 7. The sheet-like magnetic body 1A is such that the printing portion 7 is formed on the other surface of the resin body 2 and the hard coat layer 4 is formed so as to cover the printing portion 7 on the other surface of the resin body 2. This is different from the sheet-like magnetic body 1. Further, in order to make the printing unit 7 visible through (through) the hard coat layer 4, the hard coat layer 4 is formed of a light-transmitting hard coat agent. In addition, 1 A of sheet-like magnetic bodies are comprised the same as the sheet-like magnetic body 1 about another structure.

  The printing unit 7 is composed of at least one of characters (including numbers), symbols, and figures formed by ink printed on the other surface of the resin body 2. In this case, solvent-based or water-based ink is generally used as the ink. Moreover, as a formation method of the printing part 7, various printing methods, such as gravure printing, letterpress printing, offset printing, silk printing, are employable. Moreover, in the sheet-like magnetic body 1A, since the printing part 7 is visually recognized through the hard coat layer 4 as described above, in order to improve the visibility of the printing part 7, the resin body 2, the hard coat layer 4 and the like It is preferable to use inks of colors that can be distinguished well. In addition, the printing unit 7 may be formed by applying a single layer of ink, or may be formed by applying multiple layers.

  When manufacturing this sheet-like magnetic body 1A, after the drying process of the magnetic layer 3 in the manufacturing process of the sheet-like magnetic body 1 described above and before the hard coat layer forming process, from the plate cylinder of a gravure printing machine (not shown). The printing unit 7 is formed by transferring the ink to the other surface of the resin body 2 (printing unit forming step). Other steps are the same as those of the sheet-like magnetic body 1.

  Also in this sheet-like magnetic body 1A, since the hard coat layer 4 is formed on the other surface of the resin body 2, the hard coat layer 4 can protect the surface of the resin body 2 from rubbing, etc. Combined with the difficulty of scratching the hard coat layer 4 itself, it is possible to greatly reduce the scratch on the surface of the sheet-like magnetic body 1A itself. Further, according to the sheet-like magnetic body 1A, the printing unit 7 is not directly exposed on the surface of the sheet-like magnetic body 1A. Therefore, the printing unit 7 can be prevented from being rubbed. Also, peeling can be surely prevented.

  Next, the structure of the sheet-like magnetic body 1B will be described with reference to FIG. In addition, about the same structure as 1 A of sheet-like magnetic bodies, the same code | symbol is attached | subjected and the overlapping description is abbreviate | omitted.

  As shown in FIG. 3, the sheet-like magnetic body 1 </ b> B is similar to the sheet-like magnetic body 1 </ b> A in that the sheet-like resin body 2, magnetic layer 3, hard coat layer 4, adhesive layer 5, release paper 6, and printing A portion 7 is provided. On the other hand, the sheet-like magnetic body 1B is formed such that the printing portion 7 is formed on one surface of the resin body 2 and the magnetic layer 3 is formed so as to cover the printing portion 7 on one surface of the resin body 2. Is different from the sheet-like magnetic body 1A. Further, in order to make the printing unit 7 visible through (through) the hard coat layer 4, not only the hard coat layer 4 but also the resin body 2 is formed of a light-transmitting material (resin material). . The sheet-like magnetic body 1B is configured in the same manner as the sheet-like magnetic body 1A in other configurations.

  In the production of the sheet-like magnetic body 1B, ink is transferred from the plate cylinder of a gravure printing machine (not shown) to one surface of the resin body 2 prior to the magnetic layer forming step in the production process of the sheet-like magnetic body 1 described above. By doing so, the printing part 7 is formed (printing part formation process). Other steps are the same as those of the sheet-like magnetic body 1.

  Also in this sheet-like magnetic body 1B, since the hard coat layer 4 is formed on the other surface of the resin body 2, in the same manner as the sheet-like magnetic bodies 1 and 1A, the surface of the sheet-like magnetic body 1B itself is exposed. Scratching can be greatly reduced. Furthermore, since the printing unit 7 is not directly exposed on the surface of the sheet-like magnetic body 1B in the sheet-like magnetic body 1B, the printing unit 7 can be reliably prevented from being damaged or peeled off.

  Further, in the manufacture of each of the sheet-like magnetic bodies 1, 1 </ b> A, 1 </ b> B, the hard coat layer 4 is formed after the magnetic layer 3 is formed. It can also be formed on the body 2.

  Moreover, the hard-coat layer 4 can also be formed on the surface of the magnetic layer 3 like the sheet-like magnetic bodies 1C-1F shown in FIGS. In this case, the printing part 7 can also be formed on the surface of the magnetic layer 3 like the sheet-like magnetic bodies 1D and 1F shown in FIGS.

  First, the structure of the sheet-like magnetic body 1C will be described with reference to FIG. In addition, about the structure same as the sheet-like magnetic body 1, the same code | symbol is attached | subjected and the overlapping description is abbreviate | omitted.

  As shown in FIG. 4, the sheet-like magnetic body 1 </ b> C includes a sheet-like resin body 2, a magnetic layer 3, a hard coat layer 4, an adhesive layer 5, and a release paper 6. In this sheet-like magnetic body 1C, the magnetic layer 3 is formed on one surface of the resin body 2 (in this case, the upper surface in the figure), and the surface of the magnetic layer 3 (the upper surface in the figure) The present embodiment is different from the sheet-like magnetic bodies 1, 1 </ b> A, 1 </ b> B in that the hard coat layer 4 is formed on the back surface of the contact surface with the resin body in the present invention. Further, the sheet-like magnetic body 1C is also in that the adhesive layer 5 and the release paper 6 are laminated in this order on the other surface side of the resin body 2 (in this case, the lower surface side in the figure). The sheet-like magnetic bodies 1, 1A and 1B are different.

  When manufacturing the sheet-like magnetic body 1C, the hard coat layer 4 is formed on the surface of the magnetic layer 3 in the hard coat layer forming step in the manufacturing process of the sheet-like magnetic body 1 described above. In the adhesive layer forming step, the adhesive layer 5 and the release paper 6 are laminated in this order on the other surface side of the resin body 2 (the lower surface side in the figure). Other steps are the same as those of the sheet-like magnetic body 1.

  In the sheet-like magnetic body 1C, since the hard coat layer 4 is formed on the surface of the magnetic layer 3, the hard coat layer 4 can protect the surface of the magnetic layer 3 from rubbing and the like. Combined with the difficulty of scratching 4 itself, it is possible to greatly reduce the scratch on the surface of the sheet-like magnetic body 1C itself.

  Next, the structure of the sheet-like magnetic body 1D will be described with reference to FIG. In addition, about the structure same as sheet-like magnetic body 1A, 1B, the same code | symbol is attached | subjected and the overlapping description is abbreviate | omitted.

  As shown in FIG. 5, the sheet-like magnetic body 1 </ b> D is similar to the sheet-like magnetic bodies 1 </ b> A and 1 </ b> B, the sheet-like resin body 2, the magnetic layer 3, the light-transmitting hard coat layer 4 and the adhesive A layer 5, a release paper 6 and a printing unit 7 are provided. On the other hand, in the sheet-like magnetic body 1D, the magnetic layer 3 is formed on one surface (upper surface in the figure) of the resin body 2, and the printing unit 7 is formed on the surface of the magnetic layer 3 (upper surface in the figure). At the same time, the hard coat layer 4 is formed on the surface of the magnetic layer 3 so as to cover the printing part 7, which is different from the sheet-like magnetic bodies 1 </ b> A and 1 </ b> B. The sheet-like magnetic body 1C is also sheet-like in that the adhesive layer 5 and the release paper 6 are laminated in this order on the other surface side of the resin body 2 (the lower surface side in the figure). It is different from the magnetic bodies 1A and 1B.

  When manufacturing the sheet-like magnetic body 1D, after the drying process of the magnetic layer 3 in the manufacturing process of the sheet-like magnetic body 1 described above and before the hard coat layer forming process, the plate cylinder of a gravure printing machine (not shown) is used. The printing part 7 is formed by transferring the ink to the surface of the magnetic layer 3 (printing part forming step). Further, in the hard coat layer forming step, the hard coat layer 4 is formed on the surface of the magnetic layer 3 so as to cover the printing portion 7, and in the adhesive layer forming step, an adhesive is formed on the other surface side of the resin body 2. Layer 5 and release paper 6 are laminated in this order. Other steps are the same as those of the sheet-like magnetic body 1.

  Also in this sheet-like magnetic body 1D, since the hard coat layer 4 is formed on the other surface of the resin body 2, the surface of the sheet-like magnetic body 1D itself is the same as the sheet-like magnetic bodies 1 and 1A to 1C. It is possible to greatly reduce scratches on the skin. Furthermore, since the printing unit 7 is not directly exposed on the surface of the sheet-like magnetic body 1D in the sheet-like magnetic body 1D, the printing unit 7 can be reliably prevented from being damaged or peeled off.

  Next, the structure of the sheet-like magnetic body 1E will be described with reference to FIG. In addition, about the structure same as 1 C of sheet-like magnetic bodies, the same code | symbol is attached | subjected and the overlapping description is abbreviate | omitted.

  As shown in FIG. 6, the sheet-like magnetic body 1 </ b> E includes a sheet-like resin body 2, two magnetic layers 3 and 3, a hard coat layer 4, an adhesive layer 5, and a release paper 6. This sheet-like magnetic body 1E has one surface of the resin body 2 (in this case, the upper surface in the figure) and the other surface (in this case, the lower surface in the figure) (resin body 2). It differs from the sheet-like magnetic body 1C in that the magnetic layer 3 is formed on both surfaces.

  In manufacturing the sheet-like magnetic body 1E, after the magnetic layer 3 is formed on one surface of the resin body 2 in the manufacturing process of the sheet-like magnetic body 1, the magnetic layer is also formed on the other surface of the resin body 2. 3 is formed. In this case, a method in which both magnetic layers 3 are formed on both surfaces of the resin body 2 at once can be employed. In the hard coat layer forming step, the hard coat layer 4 is formed on one surface of the magnetic layers 3 and 3, and the adhesive layer 5 and the release paper are formed on the other surface of the magnetic layers 3 and 3. 6 are laminated in this order. Other steps are the same as those of the sheet-like magnetic body 1.

  Also in this sheet-like magnetic body 1E, since the hard coat layer 4 is formed on the surface of the magnetic layer 3, the hard coat layer 4 can protect the surface of the magnetic layer 3 from rubbing and the like. Combined with the difficulty of scratching the layer 4 itself, it is possible to greatly reduce the scratch on the surface of the sheet-like magnetic body 1E itself. Moreover, in this sheet-like magnetic body 1E, since the magnetic layer 3 is formed on both surfaces of the resin body 2, the electromagnetic wave shielding characteristics can be sufficiently enhanced.

  Next, the structure of the sheet-like magnetic body 1F will be described with reference to FIG. In addition, about the structure same as sheet-like magnetic body 1D, the same code | symbol is attached | subjected and the overlapping description is abbreviate | omitted.

  As shown in FIG. 7, the sheet-like magnetic body 1F includes a sheet-like resin body 2, two magnetic layers 3 and 3, a light-transmitting hard coat layer 4, an adhesive layer 5, a release paper 6, and printing. A portion 7 is provided. This sheet-like magnetic body 1F is different from the sheet-like magnetic body 1D in that the magnetic layers 3 are formed on both surfaces of the resin body 2.

  In manufacturing the sheet-like magnetic body 1F, after the magnetic layer 3 is formed on one surface of the resin body 2 in the manufacturing process of the sheet-like magnetic body 1 described above, the magnetic layer is also formed on the other surface of the resin body 2. 3 (or both magnetic layers 3 are formed on both surfaces of the resin body 2 at once), and before the hard coat layer forming step, a gravure (not shown) is formed on one surface of both magnetic layers 3 and 3. The printing section 7 is formed by transferring ink from the plate cylinder of the printing press (printing section forming step). Further, in the hard coat layer forming step, the hard coat layer 4 is formed on the surface of the magnetic layer 3 so as to cover the printing portion 7, and in the adhesive layer forming step, the other of the magnetic layers 3 and 3 is formed. The adhesive layer 5 and the release paper 6 are laminated in this order on the surface side. Other steps are the same as those of the sheet-like magnetic body 1.

  Also in this sheet-like magnetic body 1F, since the hard coat layer 4 is formed on the surface of the magnetic layer 3, the hard coat layer 4 can protect the surface of the magnetic layer 3 from rubbing and the like. Combined with the difficulty of scratching the layer 4 itself, it is possible to greatly reduce the scratch on the surface of the sheet-like magnetic body 1F itself. Also, in this sheet-like magnetic body 1F, since the printing unit 7 is not directly exposed on the surface of the sheet-like magnetic body 1F, the printing unit 7 can be reliably prevented from being damaged or peeled off. Furthermore, in this sheet-like magnetic body 1F, since the magnetic layers 3 are formed on both surfaces of the resin body 2, the electromagnetic wave shielding characteristics can be sufficiently enhanced.

FIG. 2 is a cross-sectional view for explaining the configuration of the sheet-like magnetic body 1. It is sectional drawing for demonstrating the structure of 1 A of sheet-like magnetic bodies. It is sectional drawing for demonstrating the structure of the sheet-like magnetic body 1B. It is sectional drawing for demonstrating the structure of 1 C of sheet-like magnetic bodies. It is sectional drawing for demonstrating the structure of sheet-like magnetic body 1D. It is sectional drawing for demonstrating the structure of the sheet-like magnetic body 1E. It is sectional drawing for demonstrating the structure of the sheet-like magnetic body 1F.

Explanation of symbols

1, 1A to 1F Sheet-like magnetic body 2 Resin body 3 Magnetic layer 4 Hard coat layer 5 Adhesive layer 6 Release paper 7 Printing section

Claims (18)

A sheet-like resin body;
A magnetic layer formed on one surface of the resin body including at least a soft magnetic metal magnetic powder and a binder;
A sheet-like magnetic body provided with a hard coat layer formed on the other surface of the resin body. The hard coat layer has translucency,
Ink is printed on the other surface of the resin body to form a printing unit including at least one of characters, symbols, and figures,
The sheet-like magnetic body according to claim 1, wherein the hard coat layer is formed on the other surface of the resin body so as to cover the printing portion. The resin body and the hard coat layer have translucency,
Ink is printed on the one surface of the resin body to form a printing unit including at least one of characters, symbols, and figures,
The sheet-like magnetic body according to claim 1, wherein the magnetic layer is formed on the one surface of the resin body so as to cover the printing portion. A sheet-like resin body;
A magnetic layer formed on one surface of the resin body including at least a soft magnetic metal magnetic powder and a binder;
The sheet-like magnetic body provided with the hard-coat layer formed in the back surface of the contact surface with the said resin body in the said magnetic layer. The hard coat layer has translucency,
Ink is printed on the back surface of the magnetic layer to form a printing unit including at least one of characters, symbols, and figures,
The sheet-like magnetic body according to claim 4, wherein the hard coat layer is formed on the back surface of the magnetic layer so as to cover the printing portion. A sheet-like resin body;
A magnetic layer including at least a soft magnetic metal magnetic powder and a binder and formed on one surface and the other surface of the resin body,
A sheet-like magnetic body comprising a hard coat layer formed on the back surface of the contact surface with the resin body in one of the magnetic layers. The hard coat layer has translucency,
Ink is printed on the back surface of the one magnetic layer to form a printing unit including at least one of characters, symbols, and figures,
The sheet-like magnetic body according to claim 6, wherein the hard coat layer is formed on the back surface of the magnetic layer so as to cover the printing portion.   The sheet-like magnetic body according to any one of claims 1 to 3, wherein an adhesive layer is formed on a back surface side of a contact surface of the magnetic layer with the resin body.   The sheet-like magnetic body according to claim 4 or 5, wherein an adhesive layer is formed on the other surface side of the resin body.   The sheet-like magnetic body according to claim 6 or 7, wherein an adhesive layer is formed on the back side of the contact surface with the resin body in the other of the magnetic layers.   The sheet-like magnetic body according to any one of claims 8 to 10, wherein a release paper is adhered to a surface of the adhesive layer.   A magnetic layer is formed on one surface of the sheet-like resin body, then a hard coat layer is formed on the other surface of the resin body, and then an adhesive layer and a release paper are formed on the surface of the magnetic layer. A method for producing a sheet-like magnetic body, comprising producing a sheet-like magnetic body by laminating in order.   Forming a magnetic layer on one surface of the sheet-like resin body, and then printing ink on the other surface of the resin body to form a printing unit including at least one of characters, symbols, and figures, Subsequently, a hard coat layer is formed on the other surface of the resin body, and then a sheet-like magnetic body is manufactured by laminating an adhesive layer and a release paper in this order on the surface of the magnetic layer. Body manufacturing method.   Ink is printed on one surface of the sheet-like resin body to form a printing portion including at least one of characters, symbols, and figures, and then a magnetic layer is formed on one surface of the resin body, Subsequently, a hard coat layer is formed on the other surface of the resin body, and then a sheet-like magnetic body is manufactured by laminating an adhesive layer and a release paper in this order on the surface of the magnetic layer. Body manufacturing method.   A magnetic layer is formed on one surface of the sheet-like resin body, then a hard coat layer is formed on the surface of the magnetic layer, and then an adhesive layer and release paper are formed on the other surface of the resin body. A method for producing a sheet-like magnetic body, wherein the sheet-like magnetic body is produced by laminating in order.   A magnetic layer is formed on one surface of the sheet-like resin body, and then ink is printed on the surface of the magnetic layer to form a printing portion including at least one of characters, symbols, and figures, Then, a hard coat layer is formed on the surface of the magnetic layer, and then an adhesive layer and release paper are laminated on the surface of the magnetic layer on the other surface of the resin body in this order to produce a sheet-like magnetic body A method for producing a sheet-like magnetic material.   A magnetic layer is formed on one surface of the sheet-like resin body, then a magnetic layer is formed on the other surface of the resin body, and then a hard coat layer is formed on one surface of the both magnetic layers. A method for producing a sheet-like magnetic body, which is formed, and then a sheet-like magnetic body is produced by laminating an adhesive layer and a release paper in this order on the other surface of the two magnetic layers.   A magnetic layer is formed on one surface of the sheet-like resin body, then a magnetic layer is formed on the other surface of the resin body, and then ink is printed on one surface of the both magnetic layers. Forming a printed part including at least one of characters, symbols and figures, and then forming a hard coat layer on the surface of the one magnetic layer, and then the other surface of the two magnetic layers. A method for producing a sheet-like magnetic body, in which a sheet-like magnetic body is produced by laminating an adhesive layer and a release paper in this order.

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