JP2006256273A - Recording medium, printed matter, id card, and manufacturing method of recording medium - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a recording medium which eliminates a defective printing resulting from a foreign substance, being partially missed from a side surface of the recording medium, and also, which has an improvement in peeling resistance between a base material and an image receiving layer. <P>SOLUTION: This recording medium comprises a laminated body including the base material and the image receiving layer which overlies the base material, and a side surface resin layer which is provided at least at a part of the side surface of the laminated body. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a recording medium used for an IC card, a credit card, a cash card, an employee card, an identification card, and the like, and a manufacturing method thereof.

  In recent years, ID card media such as IC cards, credit cards, cash cards, employee ID cards, and ID cards have been increasing.

  These ID card media are required to print personal information on the card surface by, for example, a thermal transfer printing method or a sublimation printing method. However, when personal information is printed using a card created by a conventional technique, for example, burrs on the side surface of the ID card are lost, resulting in a foreign matter and a printing defect. In order to solve this printing defect, there is a method in which a base material that is not easily lost from the side surface is arranged on the side surface portion (see, for example, Patent Document 1). However, in the above method, the base material must be modified, which is costly and the entire side surface of the ID card cannot be covered, which is still insufficient for preventing printing defects. In addition, when a writing layer is required on the front and back surfaces of the ID card, a part of the filler and the like contained in the writing layer may be missing from the side surface of the ID card and become a foreign object. Was insufficient.

  In addition, although the printing accuracy for forming the image layer can be improved by using the intermediate transfer method and indirect transfer method, the card configuration is partially missing from the side of the card attached to the ID card surface. Participation of foreign substances due to part of the substance cannot be avoided.

In addition, these ID card media must retain their characteristics even when left on a wallet or, for example, a car dashboard, and require characteristics such as heat resistance, light resistance, and peel resistance. It has been. In the prior art, there is a method in which unevenness is formed between base materials to maintain peeling resistance (see, for example, Patent Document 2). However, this method requires modification of the base material, which is costly and is still insufficient in terms of preventing peeling caused by punching and cutting.
JP 2004-145668 A Japanese Unexamined Patent Publication No. 2000-251049

  An object of the present invention is a recording medium, printed matter, ID card, and recording medium that eliminates printing defects caused by foreign matters partially missing from the side surface of the recording medium and has improved peel resistance between the substrate and the image receiving layer It is to obtain a manufacturing method.

  The recording medium of the present invention comprises a substrate, a laminate comprising an image receiving layer laminated on the substrate, and a side resin layer provided on at least a part of the side of the laminate. And

  The printed matter of the present invention comprises a recording medium comprising a substrate, a laminate comprising an image receiving layer laminated on the substrate, a side resin layer provided on at least a part of the side of the laminate, and an image receiving And an image layer provided on the layer.

  The ID card of the present invention is a recording medium comprising a substrate, a laminate comprising an image receiving layer laminated on the substrate, and a side resin layer provided on at least a part of the side of the laminate, And an image layer provided on the image receiving layer.

  The method for producing a recording medium of the present invention comprises a step of laminating an image receiving layer on a substrate to form a laminate, and a step of forming a side resin layer on the side surface of the laminate. To do.

  When the recording medium of the present invention is used, it is possible to form a good image having excellent peeling resistance and strength and no defects.

  The recording medium of the present invention includes a laminate including a base material and an image receiving layer, and a side resin layer provided on at least a part of the side surface of the laminate.

  The printed matter according to the present invention includes the recording medium and an image layer provided on the image receiving layer.

  Furthermore, the ID card according to the present invention includes the recording medium having a card shape and an image layer provided on the image receiving layer.

  Hereinafter, the present invention will be described in more detail with reference to the drawings.

  FIG. 1 is a sectional view schematically showing an example of a recording medium according to the present invention.

  As shown in the figure, this recording medium 10 includes, for example, a substrate 1 and a laminate 4 having an image receiving layer 2 provided on the substrate 1 and a side resin layer 3 provided on the side surface of the laminate 4. Have.

  In this recording medium, the side surface of the laminate is reinforced by a side surface resin layer provided in at least one part thereof, and thus the peel resistance between the base material and the image receiving layer and the strength against deformation such as bending are improved. Property is improved. Furthermore, since the side surface of the laminate is covered with the side resin layer, it is possible to suppress, for example, burrs generated during processing, and particulate components included as the base material and the image receiving layer material from being lost from the side surface of the laminate. In the image formation, it is possible to prevent the occurrence of image defects due to the missing foreign matter. As described above, when the recording medium of the present invention is used, it is possible to form a good image having excellent peeling resistance and strength and no defects.

  Such a print medium 10 can be formed as follows, for example.

  First, as the substrate 1, paper or a resin sheet is prepared.

  On the substrate 1, for example, an image receiving layer material is applied and dried, or a sheet made of the image receiving layer material is bonded or heat-sealed by, for example, a press machine to form an image receiving layer, and the laminate 4 Get.

  The obtained laminate 4 is processed into, for example, a card shape or another desired shape by a method such as punching or cutting.

  Thereafter, a resin material for the side surface resin layer such as a thermosetting resin and a photocurable resin is applied to a printing machine such as an ink jet printing machine or a flat printing machine such as an offset printing machine, so that at least one of the side surfaces of the laminate 4 is applied. Printing is performed so that the side resin layer is formed on the portion.

  FIG. 2 is a diagram showing a configuration of an example of an offset printing machine that can be used in the present invention.

  In the figure, 21 is an ink fountain, 22 is an ink kneading roller, 23 is an ink setting roller, 24 is a plate cylinder, 25 is a blanket cylinder, 27 is an impression cylinder, and 26 is between the blanket cylinder 25 and the impression cylinder 27. Represents a base material to be introduced.

  FIG. 3 shows an example of an offset plate pattern used in the printing machine of FIG.

  An example in which the offset plate pattern is applied to a card-shaped recording medium will be described.

  As shown in the figure, the pattern 31 of the offset plate 34 has, for example, a rectangular shape, and the inner dimensions of the pattern 31 are the same as those of the laminate of the card-shaped base material and the image receiving layer, and the outer dimensions thereof. The dimension X × Y corresponds to the finished dimension of the recording medium including the side surface resin layer. For example, when x is 84.6 mm, y is 54.0 mm, X is 55.0 mm, and Y is 85.6 mm, the pattern 31 of the offset plate 34 is 0.5 mm wide.

  As shown in the drawing, the resin material for the side surface resin layer is put into the ink fountain 21 of the offset printing machine 20 in which the offset plate 34 is set to the plate copper 24, and the resin is passed through the laminate 26 of the base material and the image receiving layer. A thermosetting resin layer 15 having a thickness of 2 μm is formed on the entire side surface of the laminate.

  Further, when the resin material for the side surface resin layer is a thermosetting resin, for example, heating is performed by an oven, a drying furnace or the like to cure the side surface resin layer to obtain a recording medium as shown in FIG.

  Alternatively, when the resin material for the side surface resin layer is a photocurable resin, light irradiation is performed, for example, with UV light or the like, and the side surface resin layer is cured to obtain a recording medium as shown in FIG.

  Hereinafter, various examples using the recording medium according to the present invention will be given.

  FIG. 4 is a cross-sectional view schematically showing an example of a printed material according to the present invention.

  As shown in the figure, the printed matter 20 has the same configuration as that of FIG. 1 except that the image layer 5 is provided on the image receiving layer 2.

  FIG. 5 is a sectional view schematically showing another example of the printed material according to the present invention.

  As shown in the figure, this printed matter 30 has the same configuration as that of FIG. 2 except that the protective layer 6 is provided on the image receiving layer 2 on which the image layer 5 is provided.

  This printed matter 30 is obtained by forming the protective layer 6 on the image receiving layer 2 provided with the image layer 5 by, for example, bonding a protective layer forming sheet through heat fusion or an adhesive. .

  Alternatively, the printed material 30 is prepared by preparing a sheet for forming an image-receiving layer / protective layer, forming an image layer on the sheet, and then thermally fusing the recording medium as shown in FIG. It can be formed by bonding.

  The printed matter according to the present invention can be formed as a personal authentication medium such as an insurance card and an employee card, preferably as an ID card.

  FIG. 6 is a front view showing an example of the ID card according to the present invention.

  FIG. 7 is a schematic diagram showing the cross-sectional structure of FIG.

  As shown in the figure, the ID card 40 includes a base material 18 made of a laminated sheet of a first resin sheet 12 and a second resin sheet 13 having a size of, for example, 84.6 mm × 54.0 mm, and a second A writing layer 14 provided on the resin sheet 13, an image receiving layer 11 provided on the first resin sheet 12, a character image layer 16 and a photographic image layer 17 provided on the image receiving layer 11, and these And a protective layer 19 provided on the image receiving layer 11 via the image layers 16 and 17.

  The base material used in the present invention can be composed of one or two or more sheet-like resin materials, and is preferably a laminated sheet of two or more layers. Examples of such resin materials include chlorine-containing polymers, polyvinyl chloride, vinyl chloride-vinyl acetate copolymers, vinyl chloride-vinyl acetate-vinyl alcohol copolymers, vinyl chloride-vinyl acetate-maleic acid copolymers. , Vinyl chloride-acrylate copolymer, polyvinylidene chloride, vinylidene chloride-vinyl chloride copolymer, vinylidene chloride-acrylonitrile copolymer, polyester resin such as polyethylene terephthalate resin, polybutylene terephthalate resin, terephthalic acid or isophthalic acid, etc. A biodegradable plastic resin such as a polylactic acid resin, a denatured ester resin (for example, PETG: a trademark of Eastman Chemical Co., Ltd.), an alcohol component such as ethylene glycol or cyclohexanedimethanol, and the like. Natural polymer resins comprising the Pung and denatured polyvinyl alcohol, beta-hydroxybutyric acid and beta-hydroxyvaleric microbial production comprising a grass acid resin or the like, polyamide resins, acrylic resins, and silicone resins. When forming a card-like printed matter such as an ID card, the thickness of the substrate is preferably 0.1 mm to 2.0 mm, for example. If the thickness of the substrate exceeds 2.0 mm, the offset printing method tends to make it difficult to form a resin on the entire side surface. If the thickness is less than 0.1 mm, the offset printing method only applies to the side surface. It tends to be difficult to form a resin.

  The image layer can be formed using various printing methods such as a hot melt printing method, a sublimation printing method, and an ink jet printing method.

  For the formation of the image layer, various functional inks, temperature indicating inks, hot melt inks, sublimation inks, and the like can be used.

  Further, the image receiving layer can be variously selected according to the above-described ink used for forming the image layer.

  As a material for the image receiving layer, a polyester resin, a polyethylene terephthalate resin, a polybutylene terephthalate resin, a urethane resin, or the like can be preferably used.

  When forming a card-like printed material such as an ID card, the thickness of the image receiving layer is preferably 2 μm to 1.0 mm, for example. If the thickness of the image receiving layer exceeds 1.0 mm, the formation of the image layer tends to be difficult depending on the forming method, and if it is less than 2 μm, it becomes difficult to form the image layer depending on the forming method. Tend.

  In the present invention, a recording material can be provided at a desired position of the laminate including the base material and the image receiving layer as required. Examples of such a recording material include materials capable of recording information electrically, magnetically, and optically.

  In the present invention, a writing layer can be further provided on the surface of the laminate. This writing layer is a layer that can be written using commercially available writing tools such as pencils, mechanical pens, ballpoint pens, and sign pens. For example, in the case of a card-like printing unit such as an ID card, the writing layer has a thickness of 2 μm to 100 μm, preferably 10 μm to 20 μm. When the thickness of the writing layer exceeds 100 μm, depending on the writing material, it tends to be lost from the medium and become a foreign substance, and when it is less than 2 μm, writing tends to be difficult.

  Examples of the writing layer forming method include a gravure method, a reverse method, and a bar coating method.

  The writing layer can contain, for example, a porous material and a resin.

  As the resin used for the writing layer, a material for fixing the porous substance to the base material is selected. For example, shellac, rosin and derivatives thereof, nitrified cotton and fiber derivatives, polyamide resin, polyacrylate resin, polyvinyl chloride Resin, polyvinyl acetate resin, polystyrene resin, petroleum resin, cyclized rubber, chlorinated rubber, chlorinated polypropylene, urethane resin, epoxy resin, polyester resin, acrylic resin, vinyl chloride, vinyl chloride-vinyl acetate copolymer, butyral resin , Vinylidene chloride resin, water-soluble resin, and the like can be used. Preferably, a polyester resin, a polyamide resin, a urethane resin, or an acrylic resin can be used. Moreover, UV ink containing a prepolymer which is copolymerized and cured by ultraviolet rays can also be used. Examples of the copolymerizable compound used in the UV ink include polyol acrylate, polyester acrylate, epoxy acrylate, urethane acrylate, and alkyd acrylate. Among these, polyester resins, polyacrylate resins, polyvinyl chloride resins, polyvinyl acetate resins, polyamide resins, and polystyrene resins are preferably used. In addition, you may use the said resin individually or in mixture of 2 or more types.

  The porous material that can be used for the writing layer only needs to have a property of receiving stamp ink or the like. Examples of the porous material include silica (sedimentable or gel type), talc, kaolin, clay, alumina white, calcium carbonate, barium sulfate, and the like. Two or more types can be used in combination. Preferably, silica (precipitation or gel type) can be used. Moreover, a color can also be given to a writing layer. The porous material preferably has an average particle size of about 1 to 6 μm, preferably 2 to 4 μm.

  As the side resin layer, for example, a thermosetting resin or a photocurable resin can be preferably used. In consideration of productivity, it is preferable to use a photocurable resin that is rapidly cured, and it is more preferable to use an ultraviolet curable resin as the photocurable resin. When it is desired to avoid light irradiation and to apply heat, it is preferable to use a thermosetting resin.

  Thermosetting resins include alkyd resins, amino / alkyd resins, epoxy resins / fatty acid esters, epoxy resins, polyurethanes, acrylic resins, acrylic / urethane resins, vinyl resins, fluororesins, polysiloxanes, acrylics A siloxane resin is preferably used.

  The photocurable resin consists of photocurable oligomers, monomers, photoreaction initiators, extender pigments, colored pigments, and other additives. The photocurable oligomers and monomers undergo a polymerization reaction by photocuring, resulting in a three-dimensional network structure. What is formed can be used.

  In addition, said each resin can be used individually or in combination of 2 or more types.

  The side resin layer preferably has a thickness of 0.5 μm to 100 μm, more preferably 1 μm to 10 μm. If the thickness of the side surface resin layer exceeds 100 μm, the side surface resin tends to be lost from the medium, and if it is less than 0.5 μm, it tends to be difficult to prevent the loss of burrs and the like.

  The method for forming the side resin layer is preferably lithographic printing, ink jet printing, printing with a rubber roller, and the like.

  For example, when the side resin layer is formed by an offset printing method which is a kind of lithographic printing method, the inner and outer dimensions of the offset plate to be used depend on the resin to be used, but the inner dimension is the size of the laminate ± 3 0.0 mm is preferred. When this range is exceeded, the resin layer tends to spread in addition to the side surface. The outer dimension is preferably (inner dimension + card thickness × 0.5 to 2.5). If the outer dimension is less than (inner dimension + card thickness x 0.5), depending on the material used, it tends to be difficult to form on the entire side surface. When the thickness exceeds 2.5 ×, the resin layer tends to spread in addition to the side surface.

  EXAMPLES Hereinafter, an Example is shown and this invention is demonstrated more concretely.

Example 1
First, a white polyester film having a thickness of 500 μm was prepared as a first resin sheet.

  In addition, an image receiving layer material having the following composition was prepared, and an image receiving layer was formed on the first resin sheet by a gravure printing method.

Image receiving layer material composition Methyl ethyl ketone 30 parts by weight Toluene 30 parts by weight Polyester urethane resin (trade name: UR-1400, manufactured by Toyobo Co., Ltd.)
30 parts by weight amino-modified silicone oil (trade name: TSF4700, manufactured by Toshiba Silicone Co., Ltd.)
0.2 parts by weight isocyanate (trade name: Coronate 2513, manufactured by Nippon Polyurethane Co., Ltd.)
1 part by weight A white polyester film having a thickness of 50 μm was prepared as the second resin sheet.

  Moreover, the writing layer material of the composition shown below was prepared and the writing layer was formed on the 2nd resin sheet by the gravure printing system.

Silica 50 parts by weight Modified urethane resin 50 parts by weight Styrene / alkyl methacrylate / alkyl acrylate copolymer 30 parts by weight Cationic polymer 10 parts by weight Polyhydroxyalkane polyglycidyl ether 10 parts by weight First resin having an image-receiving layer formed The sheet and the second resin sheet on which the writing layer was formed were introduced into a press machine and fused by heating and pressing at 140 ° C. for 180 seconds to obtain a laminate.

  The obtained laminated body was punched and cut to prepare a card-shaped laminated body of 54.0 mm × 84.6 mm × thickness 0.60 mm.

  Next, the thermosetting resin OP varnish (dry type) (manufactured by Toyo Ink) for monochrome printers is introduced into the ink fountain (21) of the offset printing machine similar to FIG. By passing the obtained card-shaped laminate through an offset printing machine (20) in which the plate (30) is set to the plate copper (24), a side resin layer (15) made of a thermosetting resin having a thickness of 2 μm. Was formed on the entire side surface of the ID card and dried in an oven at 120 ° C. for 5 minutes to produce an ID card recording medium according to the present invention.

  The same configuration as in FIGS. 6 and 7 except that 200 sheets of personal information and face images were printed on the obtained ID card recording medium by a sublimation transfer printing type card printer and no protective layer was provided. I got an ID card.

Evaluation of Print Defects Each obtained ID card was visually observed for the presence or absence of print defects, and the number of print defects generated was examined. The results are shown in Table 1 below. In addition, a printing defect shows only the printing defect by a part of card | curd structural material partially missing from the side surface of the ID card.

Peel Resistance Test FIG. 8 is a diagram for explaining a tape peel test method for examining peel resistance.

  For 10 ID card recording media, the tape peeling test was conducted by applying cellophane tapes 32 and 33 respectively to the surface of the image receiving layer side and the writing layer side and simultaneously pulling them in the directions 51 and 52 perpendicular to the respective surfaces. Then, the number of sheets where peeling occurred between layers was examined. The results are shown in Table 2 below.

Example 2
A card-shaped laminate was produced in the same manner as in Example 1.

  UV161OP varnish (manufactured by T & K TOKA) is put into the ink fountain (21) of the offset printing machine similar to FIG. 2, and the side surface resin made of UV curable resin having a thickness of 2 μm is formed on the entire side surface of the ID card in the same manner as in Example 1. Layer (15) was formed. Thereafter, the resin layer was completely polymerized and cured by irradiating with ultraviolet rays to produce the recording medium for ID card according to the present invention.

  The obtained ID card recording medium was subjected to printing defect evaluation and peel resistance test in the same manner as in Example 1. The results are shown in Table 1 and Table 2 below, respectively.

Comparative Example A card-shaped laminate was prepared in the same manner as in Example 1.

The obtained card-shaped laminate was subjected to a print defect evaluation and a peel resistance test in the same manner as in the ID card recording medium of Example 1, and the results are shown in Table 1 and Table 2, respectively.

  In Example 1 in which a side resin layer made of a thermosetting resin was formed on the side surface of the laminate and Example 2 in which a side resin layer made of a photocurable resin was formed, printing defects and delamination did not occur. It was confirmed that printing defects and delamination occurred in the comparative example in which no resin layer was provided.

  From the above results, it was found that by providing a side resin layer on the side surface of the laminate, printing defects were eliminated and tape peel resistance was improved.

Sectional drawing which represents typically an example of the recording medium which concerns on this invention The figure showing the structure of an example of the offset printing machine which can be used for this invention An example of an offset plate pattern used in the printing machine of FIG. Sectional drawing which represents typically an example of the printed matter which concerns on this invention Sectional drawing which represents typically another example of the printed matter which concerns on this invention Front view showing an example of an ID card according to the present invention Schematic sectional view showing the structure of FIG. Diagram for explaining the tape peel test method

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1,12,13,18 ... Base material, 2,11 ... Image receiving layer, 3,15 ... Side surface resin layer, 4,28 ... Laminated body, 5, 16, 17 ... Image layer, 6,19 ... Protective layer, 10 Recording medium 20, 30 Printed matter 21 Inkwell 22 Ink kneading roller 23 Ink setting roller 24 Plate cylinder 25 Blanket cylinder 26 Base material 27 Impression cylinder 31 Pattern, 34 ..., 40 ... ID card

Claims (11)

  A recording medium comprising: a base material; a laminate including an image receiving layer laminated on the base material; and a side resin layer provided on at least a part of a side surface of the laminate.   The recording medium according to claim 1, wherein the side resin layer includes a photocurable resin.   The recording medium according to claim 1, wherein the side surface resin layer includes a thermosetting resin.   The recording medium according to claim 1, wherein the side resin layer has a thickness of 1 μm to 10 μm.   A printed matter comprising the recording medium according to claim 1 and an image layer provided on the image receiving layer.   An ID card using the printed matter according to claim 5 having a card shape.   A method for producing a recording medium, comprising: a step of laminating an image receiving layer on a substrate to form a laminate; and a step of forming a side resin layer on a side surface of the laminate.   The method for manufacturing a recording medium according to claim 7, wherein the side surface resin layer includes a photocurable resin.   The method for manufacturing a recording medium according to claim 7, wherein the side resin layer includes a thermosetting resin.   The recording medium manufacturing method according to claim 7, wherein the side resin layer is formed by a method selected from an offset printing method, an ink jet printing method, and a coating method using a rubber roller. Method.   The method for manufacturing a recording medium according to claim 7, wherein the side resin layer has a thickness of 1 μm to 10 μm.

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