WO2016186203A1 - Feuille mécano-luminescente - Google Patents

Feuille mécano-luminescente Download PDF

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Publication number
WO2016186203A1
WO2016186203A1 PCT/JP2016/065044 JP2016065044W WO2016186203A1 WO 2016186203 A1 WO2016186203 A1 WO 2016186203A1 JP 2016065044 W JP2016065044 W JP 2016065044W WO 2016186203 A1 WO2016186203 A1 WO 2016186203A1
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WIPO (PCT)
Prior art keywords
layer
stress
stimulated luminescent
sheet
retroreflective
Prior art date
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PCT/JP2016/065044
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English (en)
Japanese (ja)
Inventor
祐子 青山
博孝 増山
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大日本印刷株式会社
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Priority to JP2017519416A priority Critical patent/JP6705448B2/ja
Publication of WO2016186203A1 publication Critical patent/WO2016186203A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/36—Identification or security features, e.g. for preventing forgery comprising special materials
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/12—Reflex reflectors
    • G02B5/126—Reflex reflectors including curved refracting surface
    • G02B5/128—Reflex reflectors including curved refracting surface transparent spheres being embedded in matrix
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F3/00—Labels, tag tickets, or similar identification or indication means; Seals; Postage or like stamps
    • G09F3/02—Forms or constructions

Definitions

  • the present invention relates to a stress-stimulated luminescent sheet excellent in anti-counterfeiting effects and design properties.
  • Patent Document 1 describes a forgery prevention method using a stress luminescent material. Specifically, Patent Document 1 describes a stress light emitting layer in which fine particles of a stress light emitting material are dispersed in a bonding agent such as rubber or resin, and a stress light emitting structure including the stress light emitting layer is used to prevent forgery of securities and the like. The use is described. Patent Document 1 describes that the anti-counterfeiting effect is improved by forming a stress-stimulated luminescent layer in a pattern so that the luminescence of the stress-stimulated luminescent layer can be observed as characters, patterns, and the like.
  • the stress-stimulated luminescent sheet described in Patent Document 1 has a problem that the anti-counterfeiting effect and the design property are not sufficient, such as only being capable of pattern emission with a single emission intensity.
  • the present invention has been made in view of the above-described problems, and has as its main object to provide a stress-stimulated light-emitting sheet excellent in forgery prevention effect and design.
  • the present invention provides a base material, a retroreflective layer formed on one surface of the base material and containing retroreflective particles and a resin material, and the base of the retroreflective layer.
  • a stress-stimulated luminescent sheet comprising a stress-stimulated luminescent layer formed on a surface opposite to the material and containing stress-stimulated luminescent particles and a binder resin.
  • the retroreflective layer by including the retroreflective layer, it is possible to efficiently reflect the emitted light emitted from the stress light emitting layer to the retroreflective layer side out of the light emitted from the stress light emitting layer. Light emitted from the particles can be sufficiently delivered to the viewer. For this reason, a stress light emission sheet can be made excellent in the forgery prevention effect and the designability.
  • the stress-stimulated luminescent sheet can be easily peeled between the base material and the second base material.
  • the stress light-emitting layer emits light by the stress applied to the stress light-emitting layer when the base material and the second base material are peeled off, the stress light-emitting sheet exhibits the anti-counterfeiting effect and design properties, etc. can do.
  • the stress-stimulated luminescent sheet can be easily separated and peeled between the base material and the second base material, and the stress-stimulated luminescent layer can emit light, thereby preventing forgery. It is because it can be made excellent in design.
  • a cut portion for cutting the base material is formed so as to overlap the retroreflective layer and the stress-stimulated light emitting layer in plan view, and the cut portion is formed by the second adhesive layer formed on the second adhesive layer.
  • the first adhesive layer is preferably formed so as to surround the planar view.
  • the stress-stimulated luminescent layer can easily emit light along the portion where the cut portion is formed.
  • notch part is formed so that the said adhesive layer may be enclosed in planar view, and the said contact bonding layer is formed among the stress light emission sheets isolate
  • the cut portion is formed so as to overlap both the retroreflective layer and the stress light emitting layer in plan view, the presence of the cut portion is concealed by the stress light emitting layer and the retroreflective layer. Because it can.
  • the stress-stimulated luminescent sheet can be made more excellent in the anti-counterfeiting effect. For this reason, the stress-stimulated luminescent sheet can be easily separated and peeled off in a pattern along the cut-out portion formation location, and can emit light along the cut-out formation portion. This is because the anti-counterfeiting effect and the design can be excellent.
  • the present invention provides a transparent base material, a stress light emitting layer formed on one surface of the transparent base material, containing stress light emitting particles and a binder resin, and the stress light emitting layer. And a retroreflective layer formed on the surface opposite to the transparent substrate and containing retroreflective particles and a resin material.
  • the retroreflective layer by including the retroreflective layer, it is possible to efficiently reflect the emitted light emitted from the stress light emitting layer to the retroreflective layer side out of the light emitted from the stress light emitting layer.
  • Light emitted from the particles can be sufficiently delivered from the transparent substrate side to the observer side. For this reason, the stress light-emitting sheet has excellent anti-counterfeiting effects and design properties.
  • the stress-stimulated luminescent layer is preferably formed in a pattern. This is because the stress-stimulated luminescent sheet is excellent in anti-counterfeiting effect and the like because the stress-stimulated luminescent layer is formed in a pattern.
  • the present invention has an adhesive layer formed on the surface of the transparent substrate opposite to the stress luminescent layer, or on the surface of the retroreflective layer opposite to the stress luminescent layer. It is preferable to have an adhesive layer formed. This is because the stress-stimulated luminescent sheet can be easily attached to an adherend that requires anti-counterfeiting effects or design properties by having the adhesive layer. Further, the stress light emitting layer can emit light due to the stress applied to the stress light emitting layer when the stress light emitting sheet attached to the adherend is peeled off. This is because the stress-stimulated luminescent sheet has excellent anti-counterfeiting effects and design properties.
  • an intermediate transparent substrate formed between the stress-stimulated luminescent layer and the retroreflective layer, a protective layer formed on the surface of the retroreflective layer opposite to the stress-stimulated layer, And is preferably used as a card. This is because the stress-stimulated luminescent sheet becomes a card excellent in anti-counterfeiting effects and design properties.
  • the present invention provides a transparent base material, a retroreflective layer formed on one surface of the transparent base material and containing retroreflective particles and a resin material, and the retroreflective material.
  • a stress-stimulated luminescent layer containing stress-stimulated luminescent particles and a binder resin, wherein the retroreflective layer is formed in a pattern, and the stress-stimulated luminescent layer is formed on the surface of the layer opposite to the transparent substrate. Is provided so as to cover both the region where the retroreflective layer is formed and the region where the retroreflective layer is not formed.
  • the retroreflective layer is formed in a pattern, and the stress light emitting layer is formed so as to cover both the formation region and the non-formation region of the retroreflective layer.
  • the stress-stimulated luminescent layer is opposite to the retroreflective layer (hereinafter sometimes referred to simply as the surface side).
  • the surface side it is possible to perform different pattern light emission on the retroreflective layer side (hereinafter sometimes referred to simply as the back surface side) of the stress light emitting layer and pattern light emission having different light emission intensity on the front surface side. Therefore, the stress-stimulated luminescent sheet of the present invention has excellent anti-counterfeit effects and design properties.
  • the stress-stimulated luminescent layer is preferably formed in a pattern. This is because the stress-stimulated luminescent layer is formed in a pattern so that the stress-stimulated luminescent sheet can be made more excellent for preventing forgery.
  • a brittle layer formed on the surface of the transparent substrate opposite to the retroreflective layer and a brittle layer formed on the surface of the brittle layer opposite to the transparent substrate. It is preferable to have a 2nd transparent base material and the contact bonding layer formed on the surface on the opposite side to the said brittle layer of the said 2nd transparent base material.
  • the stress-stimulated luminescent sheet can emit light from the stress-stimulated luminescent layer due to the stress applied to the stress-stimulated luminescent layer when the transparent substrate and the second transparent substrate are separated from each other. For this reason, the stress-stimulated luminescent sheet can be easily separated and peeled between the transparent substrate and the second transparent substrate, and the stress-stimulated luminescent layer can emit light. This is because the prevention effect and the design are excellent.
  • a brittle layer formed on the surface of the transparent substrate opposite to the retroreflective layer, a first adhesive layer formed on the same plane as the brittle layer, and the brittle layer
  • the second transparent substrate formed on the surface of the porous layer and the first adhesive layer opposite to the transparent substrate, and the brittle layer and the first adhesive layer of the second transparent substrate.
  • a second adhesive layer formed on the opposite surface, and a cut portion for cutting the transparent substrate is formed so as to overlap the retroreflective layer and the stress-stimulated luminescent layer in plan view, The cut portion is preferably formed so as to surround the first adhesive layer in plan view. Since the cut portion is formed in the transparent base material, the stress-stimulated luminescent sheet can be easily separated along the cut portion formation portion.
  • the stress-stimulated luminescent sheet can easily emit light from the stress-stimulated luminescent layer along the portion where the cut portion is formed.
  • the stress-stimulated light emitting layer around the notch formation portion can also emit light.
  • the pattern light emission and the light emission intensity differ on both sides depending on the pattern shape of the retroreflective layer and the stress light-emitting layer. Different pattern emission is possible.
  • the first adhesive layer is formed by the cut portion being formed so as to surround the first adhesive layer in plan view. Only the formed part is left on the adherend, and only the part where the brittle layer is formed can be easily peeled off.
  • the cut portion is formed so as to overlap both the retroreflective layer and the stress light emitting layer in plan view, the presence of the cut portion is concealed by the stress light emitting layer and the retroreflective layer. be able to.
  • the stress-stimulated luminescent sheet can be easily separated and peeled in a pattern along the concealed cut-out portion formation location, and can emit light along the cut-out formation portion. This is because the anti-counterfeiting effect and the design are excellent.
  • an intermediate transparent substrate formed between the retroreflective layer and the stress luminescent layer, and a transparent protective layer formed on the surface of the stress luminescent layer opposite to the retroreflective layer, And is preferably used as a card. This is because the stress-stimulated luminescent sheet becomes a card excellent in anti-counterfeiting effects and design properties.
  • the present invention has an effect of providing a stress-stimulated luminescent sheet excellent in anti-counterfeiting effects and design properties.
  • FIG. 5 is a cross-sectional view taken along line A1-A1 of FIG.
  • FIG. 7 is a cross-sectional view taken along line A2-A2 of FIG.
  • FIG. 7 is a schematic sectional drawing which shows the other example of the stress light emission sheet
  • FIG. 13 is a cross-sectional view taken along line A3-A3 of FIG. It is explanatory drawing explaining the separation method of a stress light-emitting sheet. It is a schematic plan view which shows the other example of the stress light emission sheet
  • FIG. 16 is a cross-sectional view taken along line A4-A4 of FIG.
  • FIG. 23 is a sectional view taken along line B1-B1 of FIG.
  • FIG. 25 is a sectional view taken along line B2-B2 of FIG. It is a schematic sectional drawing which shows the other example of the stress light emission sheet
  • FIG. 32 is a cross-sectional view taken along line B3-B3 of FIG. It is explanatory drawing explaining the separation method of a stress light-emitting sheet. It is a schematic plan view which shows the other example of the stress light emission sheet
  • FIG. 35 is a sectional view taken along line B4-B4 of FIG. It is a schematic sectional drawing which shows the other example of the stress light emission sheet
  • FIG. 40 is a sectional view taken along line C1-C1 of FIG. 39. It is explanatory drawing explaining the optical path of the emitted light from the stress light emission layer in the stress light emission sheet
  • FIG. 45 is a sectional view taken along line C2-C2 of FIG. 44.
  • FIG. 52 is a sectional view taken along line C3-C3 of FIG. 51. It is process drawing explaining the separation method of a stress light-emitting sheet.
  • FIG. 55 is a sectional view taken along line C4-C4 of FIG. 54. It is a schematic sectional drawing which shows the other example of the stress light emission sheet
  • the present invention relates to a stress light-emitting sheet.
  • the stress-stimulated luminescent sheet of the present invention will be described in detail.
  • the stress-stimulated luminescent sheet of the present invention is opposite to the base material, the retroreflective layer formed on one surface of the base material and containing the retroreflective particles and the resin material, and the base material of the retroreflective layer.
  • the stress-stimulated luminescent sheet of this aspect is opposite to the base material, the retroreflective layer formed on one surface of the base material and containing the retroreflective particles and the resin material, and the base material of the retroreflective layer. And a stress-stimulated luminescent layer that is formed on the surface of the side and contains stress-stimulated luminescent particles and a binder resin.
  • FIG. 1 is a schematic cross-sectional view showing an example of the stress-stimulated luminescent sheet of this embodiment.
  • the stress-stimulated luminescent sheet 10 of this embodiment includes a base material 1 and a retroreflective layer 2 formed on one surface of the base material 1 and containing retroreflective particles and a resin material.
  • the retroreflective layer 2 is formed on the surface of the retroreflective layer 2 opposite to the base 1 and has a stress luminescent layer 3 containing stress luminescent particles and a binder resin.
  • the emitted light emitted from the stress light emitting layer to the retroreflective layer side can be efficiently reflected out of the light emitted from the stress light emitting layer, and the stress light emission.
  • Light emitted from the particles can be sufficiently delivered to the viewer. For this reason, for example, when the stress light emitting layer is formed in a pattern, the observer can sufficiently observe the light emission in a desired pattern. Therefore, the stress-stimulated luminescent sheet can be excellent in anti-counterfeiting effect and design properties.
  • the retroreflective layer is excellent in foil breakability because the retroreflective particles are dispersed in the resin material. For this reason, the said retroreflection layer is easy to cut
  • the stress-stimulated luminescent layer also has excellent foil cutting properties because stress-stimulated luminescent particles are dispersed in the binder resin, and can be easily cut into any shape. For this reason, the stress light emitting layer and the retroreflective layer can be easily cut into arbitrary shapes, and the stress light emitting layer can emit light along the cut portion. For this reason, the stress-stimulated luminescent sheet can be made excellent in anti-counterfeiting and design properties.
  • the stress-stimulated luminescent sheet of this embodiment has a substrate, a retroreflective layer, and a stress-stimulated luminescent layer.
  • a substrate a retroreflective layer
  • a stress-stimulated luminescent layer a stress-stimulated luminescent layer
  • the stress-stimulated luminescent layer in this embodiment contains stress-stimulated luminescent particles and a binder resin.
  • the stress-stimulated luminescent layer is formed on the retroreflective layer.
  • the stress-stimulated luminescent layer formed on the retroreflective layer is not limited to those in which the retroreflective layer and the stress-stimulated luminescent layer are formed as separate layers.
  • the retroreflective particles are included so as to have a high concentration on the substrate side, and the stress-luminescent particles are included so as to have a high concentration on the side opposite to the substrate side. Note that FIG.
  • FIG. 1 shows an example in which the retroreflective layer 2 and the stress light emitting layer 3 are formed as separate layers.
  • the retroreflective layer 2 and the stress luminescent layer 3 are formed as the same layer, the retroreflective particles 12 are included at a high concentration on the substrate 1 side, and the stress luminescent particle 13 is the substrate side.
  • concentration on the other side is shown.
  • the reference numerals in FIG. 2 indicate the same members as those in FIG. 1, and a description thereof will be omitted here.
  • the stress-stimulated luminescent layer contains stress-stimulated luminescent particles and a binder resin.
  • Stress-stimulated luminescent particles have a property that the particles themselves emit light by strain energy applied from the outside, and a property that changes the luminescence intensity in proportion to the strain energy. Anything is acceptable.
  • the wavelength of light emitted from the stress-stimulated luminescent particles (hereinafter sometimes referred to as a predetermined wavelength) is included in the range of visible light.
  • a predetermined wavelength the wavelength of light emitted from the stress-stimulated luminescent particles.
  • the visible light wavelength range may be in the range of 400 nm to 800 nm.
  • the said predetermined wavelength shall have area
  • the predetermined wavelength refers to the maximum peak wavelength of the emission spectrum of stress-stimulated luminescent particles within a wavelength range of 200 nm to 1000 nm.
  • the emission luminance of the stress luminescent particles is preferably 1.0mcd / cm 2 or more, among others, are 10mcd / cm 2 or more In particular, it is preferably 100 mcd / cm 2 or more. This is because when the emission luminance is within the above range, it can be recognized as high luminance outdoors, and the reliability of authenticity determination using emission from the stress emission layer can be improved.
  • Examples of the stress-stimulated luminescent material constituting the stress-stimulated luminescent particles include a material (ceramics) in which an element serving as a luminescent center is added to an inorganic crystal skeleton whose structure is highly controlled.
  • a material that emits light at various wavelengths from ultraviolet to visible to infrared can be used by selecting an inorganic material and the kind of element that is a light emission center.
  • the stress-stimulated luminescent material can be classified into a stress-stimulated luminescent material and a stress-stimulated phosphorescent material according to the decay time of luminescence due to given energy.
  • fluorescent light-emitting material examples include strontium aluminate added with europium as the emission center (SrAl 2 O 4 : Eu, green emission), zinc sulfide added with manganese as the emission center (ZnS: Mn, emission in yellow green) Etc.
  • the type of stress-stimulated luminescent material constituting the stress-stimulated luminescent particles is not limited to one using only one type, and two or more types may be used. In this embodiment, it is preferable that there are two or more kinds of the stress-stimulated luminescent materials.
  • the stress-stimulated luminescent layer can have regions with different luminescent colors. For example, in the stress-stimulated luminescent layer 3 shown in FIG. 3, the region indicated by x is the first luminescent color region containing the stress-stimulated luminescent particles made of the first stress luminescent material, and the region indicated by y is the first.
  • the stress-stimulated luminescent sheet according to this aspect can be made excellent in anti-counterfeiting effects and the like. Further, when two or more layers of the stress luminescent layer are laminated on the same stress luminescent sheet, the types of stress luminescent particles contained in each stress luminescent layer may be the same or different. Note that the reference numerals in FIG. 3 indicate the same members as those in FIG.
  • a mixture of stress-stimulated luminescent particles made of each stress-stimulated luminescent material for example, the luminescent color from the first stress-stimulated luminescent particles and the second A stress-stimulated luminescent layer of one luminescent color in which luminescent colors from stress-stimulated luminescent particles are mixed may be used.
  • the shape of the stress-stimulated luminescent particles can be a conventionally known shape.
  • Examples of the shape include a substantially spherical shape, a spheroid shape, a polyhedron shape, a scale shape, a disk shape, a fiber shape, and a needle shape.
  • the surface of the stress-stimulated luminescent particle has a fine uneven shape formed randomly. This is because the stress can easily be transmitted to the portion where the fine unevenness of the stress-stimulated luminescent particles is formed, and the stress-stimulated luminescent particles can efficiently emit light.
  • the concavo-convex shape may have a concavo-convex period and depth of nano size to several microns.
  • the average primary particle diameter of the stress-stimulated luminescent particles is not particularly limited as long as a stress-stimulated luminescent layer having a desired luminescence intensity can be obtained. In particular, it is preferably in the range of 5.0 ⁇ m to 20 ⁇ m. It is because it can be set as the stress light emitting layer excellent in emitted light intensity by being the said particle size.
  • the average primary particle size can be determined by a method of measuring using a laser diffraction scattering method.
  • the laser diffraction / scattering method uses a diffraction / scattering phenomenon of light by uniformly dispersing particles in a dispersion medium and then irradiating the particles with laser light.
  • the intensity pattern of the diffraction / scattered light is Depending on the size of the particle, different intensity patterns (intensity distributions) are observed depending on the angle of diffraction / scattered light, and the particle size distribution is obtained using the Franhofer diffraction theory or Mie scattering theory. .
  • the average primary particle size is determined using a laser diffraction / scattering method, it can be measured either dry or wet. When measuring by wet, water or ethanol can be measured as a dispersion.
  • a laser beam used for a laser diffraction scattering method a semiconductor laser (wavelength 680 nm) etc. can be used as a laser beam used for a laser diffraction scattering method.
  • the stress-stimulated luminescent particles are preferably coated with a water-resistant coating formed using a water-resistant material for improving water resistance. This is because it is possible to prevent the collapse of the crystal structure of the stress-stimulated luminescent material and the loss of luminescent property due to water. Moreover, it is because the water resistance, weather resistance, etc. of a stress light-emitting sheet can be improved.
  • a method for evaluating water resistance for example, a method of performing a water immersion test using warm water at a specified temperature using a stress-stimulated luminescent sheet adjusted in accordance with JIS K 6404-9: 1999 is used. it can. In the above JIS standard, a water immersion test is carried out for 4 hours.
  • the improvement in water resistance means that the half-life time of the stress-stimulated luminescent sheet using stress-stimulated luminescent particles with a water-resistant coating film and the half-life time of stress-stimulated luminescent sheets using a stress-stimulated luminescent particle without a water-resistant coating And the half time is 2.0 times or more.
  • the target half-life is preferably 2.0 times or more and 10 times or less.
  • the water resistant material is not particularly limited as long as it can improve the water resistance of the stress-stimulated luminescent particles.
  • silane coupling agent for example, silane coupling agent, thermoplastic resin, thermosetting resin, metal alkoxide, metal oxidation And the like. These water resistant materials may be used alone or in combination.
  • the water-resistant film may be composed of only one layer formed using a mixture of a plurality of water-resistant materials, and includes a plurality of layers having different water-resistant materials. Also good.
  • the silane coupling agent is not particularly limited as long as it can improve the water resistance of the stress-stimulated luminescent particles, but those having a vinyl group such as vinyltrimethoxysilane and vinyltriethoxysilane, 3- Those having an epoxy group such as glycidoxypropylmethyldimethoxysilane, those having a styryl group such as P-styryltrimethoxysilane, those having an acrylic group such as 3-acryloxypropyltrimethoxysilane, 3-methacryloxypropyl Those having a methacryl group such as trimethoxysilane, those having an isocyanate group such as 3-isocyanatopropyltriethoxysilane, trimethylsilyl chloride, hexamethyldisilazane, BSTFA (N, O-bis-trimethylsilyl-tri Fluoroacetate Bromide), triethylsilyl chloride, chloromethyltrimethylsilane, trimethyls
  • the thermoplastic resin is not particularly limited as long as it can improve the water resistance of the stress-stimulated luminescent particles.
  • polymethyl methacrylate, polymethyl acrylate, polybenzyl methacrylate, polybutyl acrylate, polyisobutyl Acrylate ester resins such as acrylate, cellulose resins such as cellulose nitrate, methyl cellulose, ethyl cellulose, and cellulose acetate propionate
  • vinyl resins such as polyvinyl acetate and polyvinyl chloride vinyl acetate copolymer
  • acrylamide resins and polystyrene resins Etc.
  • the thermosetting resin is not particularly limited as long as it can improve the water resistance of the stress-stimulated luminescent particles.
  • unsaturated polyester resin acrylic urethane resin, epoxy-modified acrylic resin, melamine resin
  • examples include epoxy-modified unsaturated polyester resins, alkyd resins, phenol resins, silicone resins, and fluorinated resins.
  • metal element constituting the metal alkoxide examples include aluminum, zirconium, titanium, and silicon.
  • alkoxide methoxide, ethoxide, propoxide, isopropoxide, oxyisopropoxide, butoxide and the like can be used.
  • Specific examples of the metal alkoxide include ethyl silicate and methyl silicate obtained by partially hydrolyzing and condensing tetraethoxysilane or tetramethoxysilane.
  • the metal alkoxide is preferably tetraethoxysilane, tetramethoxysilane, tetraethyl silicate, tetramethyl silicate, aluminum triisopropoxide, zirconium tetraisopropoxide, titanium tetraisopropoxide, or the like. This is because the stress-stimulated luminescent particles can be excellent in water resistance.
  • Examples of the metal oxide include alumina and titanium dioxide.
  • the thickness of the water-resistant film is not particularly limited as long as the desired water resistance can be obtained.
  • the thickness can be in the range of 0.1 ⁇ m to 10 ⁇ m.
  • the method for forming the water-resistant coating is not particularly limited as long as it is a method capable of accurately forming a water-resistant coating covering the surface of the stress luminescent particles.
  • a method of mixing the water-resistant material and stress-stimulated luminescent particles can be used.
  • the above forming method may be mixed in an organic solvent as necessary.
  • a chemical vapor deposition method (CVD method or the like) can be used.
  • organic solvent examples include alcohol solvents such as ethyl alcohol, propyl alcohol, and butyl alcohol, ketone solvents such as acetone and methyl ethyl ketone, aromatic hydrocarbon solvents such as toluene, xylene, and benzene, methyl cellosolve, and ethyl cellosolve.
  • alcohol solvents such as ethyl alcohol, propyl alcohol, and butyl alcohol
  • ketone solvents such as acetone and methyl ethyl ketone
  • aromatic hydrocarbon solvents such as toluene, xylene, and benzene, methyl cellosolve, and ethyl cellosolve.
  • Glycol ether solvents such as propylcellsolve and butylcellsolve, diethylene glycol, triethylene glycol, polyethylene glycol, dipropylene glycol, tripropylene glycol, polypropylene glycol and other oxyethylene, oxypropylene addition polymers, ethylene glycol, propylene glycol Alkylene glycol such as 1,2,6-hexanetriol, glycerin, 2-pyrrolidone and the like can be preferably used.
  • System solvent can be preferably used ketone-based solvents.
  • the water content of the organic solvent is not particularly limited as long as the water-resistant coating can be applied to the stress-stimulated luminescent particles, but it is preferably less than 0.5% by mass. This is because it is possible to suppress a decrease in light emission characteristics of the stress-stimulated luminescent particles due to moisture in the organic solvent.
  • the content of the stress-stimulated luminescent particles is not particularly limited as long as a stress-stimulated luminescent layer having a desired luminescence intensity can be obtained.
  • a stress-stimulated luminescent layer having a desired luminescence intensity can be obtained.
  • the content can be, for example, in the range of 1% by mass to 50% by mass in the stress light emitting layer.
  • the content of the stress-stimulated luminescent particles may be one type, that is, the content of the stress-stimulated luminescent particles may be uniform in the stress-stimulated luminescent layer. It is preferable that a light emitting layer has a site
  • any method that can form stress-stimulated luminescent particles having a desired shape may be used.
  • the above-described forming method includes baking a stress-stimulated luminescent material composition containing components constituting the stress-stimulated luminescent material to form a sheet-like stress-stimulated luminescent material, and then pulverizing and classifying the luminescent particles. The method of obtaining can be used.
  • Examples of the method for pulverizing the sheet-like stress luminescent material include a method using a pulverizer such as a ball mill, a rod mill, an autogenous pulverization mill, a SAG (semi-autogenous pulverization) mill, a high-pressure pulverization roll, and a vertical axis impactor (VSI) mill. it can.
  • the pulverization method is a method using a longitudinal impactor (VSI) mill. This is because the shape of the stress-stimulated luminescent particles tends to be complicated, and a rough uneven shape is easily formed on the surface of the stress-stimulated luminescent particles.
  • the vertical axis impactor (VSI) mill is a fine pulverizer that rotates impact teeth at high speed and pulverizes the raw material by the impact force. What rotates at high speed can be used.
  • the method generally used for formation of a stress luminescent material can be used.
  • Binder resin is not particularly limited as long as it can stably disperse and fix the stress-stimulated luminescent particles and can transmit light emitted from the stress-stimulated luminescent particles.
  • Examples thereof include a plastic resin, a thermosetting resin, and an ionizing radiation curable resin.
  • thermoplastic resin and the thermosetting resin for example, the same resins as the thermoplastic resin and the thermosetting resin described in the section “(a) Stress luminescent particles” can be used.
  • the thermoplastic resin and the thermosetting resin are those copolymerized with a silicone resin, a fluorine-containing resin, or the like, or those having a siloxane bond or a fluorine atom introduced into the molecule of the thermoplastic resin or thermosetting resin. be able to.
  • the said thermoplastic resin and thermosetting resin can use 1 type, or 2 or more types, Furthermore, you may bridge
  • thermoplastic resin and the thermosetting resin contain various curing catalysts, for example, a metal soap such as cobalt naphthenate or zinc naphthenate, or benzoyl peroxide for initiating polymerization with heat or ultraviolet rays, Peroxides such as methyl ethyl ketone peroxide, benzophenone, acetophenone, anthraquinone, naphthoquinone, azobisisobutyronitrile, or diphenyl sulfide may be blended.
  • a metal soap such as cobalt naphthenate or zinc naphthenate
  • benzoyl peroxide for initiating polymerization with heat or ultraviolet rays
  • Peroxides such as methyl ethyl ketone peroxide, benzophenone, acetophenone, anthraquinone, naphthoquinone, azobisisobutyronitrile, or diphenyl sulfide may be blended.
  • the ionizing radiation curable resin examples include epoxy acrylate, urethane acrylate, and acrylic-modified polyester.
  • the ionizing radiation curable resin may be used by blending a monofunctional monomer, a polyfunctional monomer, an oligomer, or the like for the purpose of introducing a crosslinked structure or adjusting the viscosity.
  • the binder resin may include a first binder resin disposed so as to cover the stress luminescent particles and a second binder resin that disperses the stress luminescent particles covered with the first binder resin. .
  • the refractive index difference between the binder resin and the stress-stimulated luminescent particles is not particularly limited as long as the binder resin can transmit light emitted from the stress-stimulated luminescent particles, but is preferably 0.3 or less. Of these, 0.1 or less is preferable.
  • the refractive index difference is within the above range, the reflectance of the emitted light from the stress-stimulated luminescent particles at the interface between the binder resin and the stress-stimulated luminescent particles can be reduced. This is because the stress-stimulated luminescent layer can efficiently transmit light emitted from the stress-stimulated luminescent particles.
  • the refractive index difference between the said 1st binder resin and 2nd binder resin is also small. This is because the reflectance of the emitted light from the stress luminescent particles at the interface between the first binder resin and the second binder resin can be reduced.
  • the refractive index difference between the first binder resin and the second binder resin can be the same as the refractive index difference between the binder resin and the stress luminescent particle refractive index.
  • the volume elastic modulus of the binder resin is preferably larger than the volume elastic modulus of the stress-stimulated luminescent particles. This is because, when stress is applied to the stress-stimulated luminescent sheet, deformation applied to the stress-stimulated luminescent layer can be effectively transmitted to the stress-stimulated luminescent particles, and the stress-stimulated luminescent layer can be made excellent in luminous efficiency. .
  • the stress-stimulated luminescent layer has stress-stimulated luminescent particles and a binder resin, but may contain other materials as necessary.
  • the other materials include additives such as coloring materials such as pigments, curing accelerators, lubricants, light stabilizers, oxidation stabilizers, perfumes, and ultraviolet absorbers.
  • the binder resin is a thermoplastic resin or a thermosetting resin
  • the other material may include a silicone resin, a fluorine-containing resin, silicone oil, silicone powder fine particles, and fluorine powder fine particles.
  • a tetrafluorinated resin as a fully fluorinated resin, a trifluorinated resin as a partially fluorinated resin, polyvinylidene fluoride, polyvinyl fluoride, a perfluoroalkoxy fluororesin as a fluorinated resin copolymer, and a tetrafluoride resin.
  • An ethylene-hexafluoropropylene copolymer, an ethylene-tetrafluoroethylene copolymer, an ethylene-chlorotrifluoroethylene copolymer, or the like can be used.
  • content of said other material can be adjusted within the range which can permeate
  • the stress-stimulated luminescent layer may be formed in a pattern, although it may not be formed in a pattern, that is, the stress-stimulated luminescent layer may be formed so as to cover the entire surface of the substrate. It is preferable.
  • the stress light emitting layer By forming the stress light emitting layer in a pattern, the stress light emitting layer can emit light in a pattern in plan view when stress is applied to the stress light emitting sheet. For this reason, it is because the stress light emission layer can be made excellent in the forgery prevention effect etc. because the said stress light emission layer is formed in pattern shape.
  • FIG. 4 is a schematic plan view showing another example of the stress-stimulated luminescent sheet of this embodiment
  • FIG. 5 is a cross-sectional view taken along line A1-A1 of FIG.
  • FIG. 1 already described shows an example in which the stress-stimulated luminescent layer 3 is formed on the entire surface of the substrate 1, and FIGS. 4 and 5 show examples in which the stress-stimulated luminescent layer 3 is formed in a pattern. It is. 4 and 5 show an example in which no other layer is formed on the same plane as the stress light emitting layer 3 except the region where the stress light emitting layer 3 is formed in a pattern. 4 and 5 indicate the same members as those in FIG. 1, and the description thereof is omitted here.
  • the shape of the stress-stimulated luminescent layer in plan view can be appropriately set according to the type and application of the stress-stimulated luminescent sheet of this embodiment.
  • the planar view shape of the stress light emitting layer can be a dot shape, a line shape, or the like.
  • the planar view shape of the dot-like stress light-emitting layer can be an arbitrary shape such as a circular shape or a square shape.
  • the planar view shape of the stress light emitting layer may represent a symbol, a character, or the like.
  • the shape of the stress-stimulated luminescent layer in plan view may be, for example, a line-like stress luminescent layer that represents characters or the like, or a dot-like stress luminescent layer that represents characters or the like. Further, it may represent predetermined information using characters or the like. Further, when two or more stress-stimulated luminescent layers are included in the same stress-stimulated luminescent sheet, the shape of each stress-stimulated luminescent layer in plan view may be the same or different. 4 and 5 which have already been described show examples in the case where the stress emission layer 3 has a line shape in plan view.
  • the width of the stress luminescent layer is not particularly limited as long as it can emit light in a desired pattern shape. It is set as appropriate according to the application.
  • the thickness of the stress-stimulated luminescent layer is not particularly limited as long as it can be a stress-stimulated luminescent layer having a desired luminescence intensity, but can usually be in the range of 0.1 ⁇ m to 6 ⁇ m. In particular, it is preferably in the range of 0.1 ⁇ m to 4 ⁇ m.
  • the stress-stimulated luminescent layer only needs to be transparent to light having a predetermined wavelength emitted by the stress-stimulated luminescent particles.
  • the total light transmittance of the stress-stimulated luminescent layer is preferably 20% or more, more preferably 60% or more, and particularly preferably 90% or more. This is because it is easy to make the stress light emitting layer excellent in light emission intensity.
  • the transmittance of the stress-stimulated luminescent layer can be measured by JIS K7361-1 (Plastic—Testing method of total light transmittance of transparent material).
  • the number of the stress light emitting layers may be one or more on one stress light emitting sheet, but it is two or more, that is, a stress light emitting layer in which two or more stress light emitting sheets of this embodiment are laminated. It may have. It becomes possible to easily form different stress luminescent layers such as the type and content of the stress luminescent particles and the shape of the stress luminescent layer in plan view, and the stress luminescent sheet can be excellent in anti-counterfeiting effects and the like. Because. As shown in FIGS. 3, 4, and 5, the plurality of stress light emitting layers formed on the same plane are regarded as one stress light emitting layer.
  • the method for forming the stress-stimulated luminescent layer is not particularly limited as long as the method can contain stress-stimulated luminescent particles and a binder resin.
  • a stress luminescent ink is formed by dispersing or dissolving a stress luminescent particle and a binder resin, which are constituent materials of the stress luminescent layer, in a solvent, and this stress luminescent ink is applied on the retroreflective layer.
  • the method of forming a stress light emitting layer by drying a solvent from the coating film of the stress light emitting ink can be mentioned.
  • the above forming method may be a method of simultaneously forming the stress light emitting layer and the retroreflective layer.
  • mixed ink is formed by dispersing or dissolving the stress-stimulated luminescent particles, the binder resin, the retroreflective particles, and the like in a solvent.
  • the ink is applied on the base material, and the solvent is dried from the coating film of the mixed ink.
  • the retroreflective particles are precipitated in the coating film so that the retroreflective particles have a high concentration on the base material side.
  • the forming method may be a method of applying a stress-stimulated luminescent ink in a pattern using a printing method or the like.
  • the printing method is not particularly limited as long as it is a printing method capable of forming a stress light emitting layer having a desired pattern shape.
  • the printing method include spray printing and coating.
  • solvent examples include cyclic hydrocarbons (cyclohexane, etc.), alcohols (methanol, ethanol, isopropyl alcohol, n-propyl alcohol, isobutyl alcohol, n-butyl alcohol, etc., and their aqueous solutions), ethers (tetrahydrofuran, methyl).
  • cyclic hydrocarbons cyclohexane, etc.
  • alcohols methanol, ethanol, isopropyl alcohol, n-propyl alcohol, isobutyl alcohol, n-butyl alcohol, etc.
  • ethers tetrahydrofuran, methyl
  • esters ethyl acetate, butyl acetate
  • esters ethyl acetate, butyl acetate
  • propylene glycol monomethyl ether acetate propylene glycol monomethyl ether acetate
  • cellosolve acetate ethyl 3-ethoxypropionate and the like
  • water and / or lower alcohols such as methanol, ethanol, propanol, and butyl alcohol, glycols, and cell solves can be used as the solvent.
  • the method of forming the stress-stimulated luminescent ink is not particularly limited as long as it is a method capable of stably dispersing or dissolving the stress-stimulated luminescent particles and the binder resin in the solvent.
  • the binder resin is dispersed or dissolved in the solvent.
  • An example is a method in which stress luminescent particles are added and stirred.
  • the drying method is not particularly limited as long as the solvent can be sufficiently removed. Natural drying, contact heat drying at 40 ° C. to 80 ° C., hot air drying at 40 ° C. to 200 ° C., vacuum drying. Etc. can be used. In addition, as the drying method, ultraviolet ray irradiation, drying using a curing reaction by electron beam irradiation, or the like may be used alone or in combination.
  • Retroreflective layer The retroreflective layer in this aspect is formed on one surface of the base material.
  • the retroreflective layer contains retroreflective particles and a resin material.
  • the retroreflective layer contains retroreflective particles and a resin material.
  • the retroreflective particles are not particularly limited as long as the light emitted from the stress-stimulated luminescent layer can be retroreflected, and those generally used for forming the retroreflective layer are used. Specifically, glass beads can be used.
  • the average primary particle diameter of the retroreflective particles can be, for example, in the range of 1 ⁇ m to 300 ⁇ m, preferably in the range of 20 ⁇ m to 300 ⁇ m, particularly in the range of 75 ⁇ m to 110 ⁇ m. It is preferable that This is because the light emitted from the stress-stimulated luminescent particles can be efficiently reflected.
  • the measuring method of an average primary particle diameter can use the method similar to the measuring method of the average primary particle diameter of the said stress luminescent particle.
  • the shape of the retroreflective particles is not particularly limited as long as it can refract incident light in the bead to focus on the spherical surface of the bead and return it as reflected light. There is no but usually spherical.
  • the refractive index of the retroreflective particles is not particularly limited as long as the incident light can be refracted in the bead to focus on the bead spherical surface and can be recursed as reflected light. For example, it can be in the range of 1.5 to 2.5. This is because it is easy to retroreflect incident light in the same direction because the refractive index is within the above-mentioned range.
  • the content of the retroreflective particles can be in the range of 30% by mass to 85% by mass in the retroreflective layer.
  • the resin material is not particularly limited as long as it can disperse and hold the retroreflective particles and can transmit light emitted from the stress-stimulated luminescent particles.
  • the resin material may be any resin material that is rich in adhesiveness with retroreflective particles and can form a transparent film, such as acrylic, urethane, vinyl, epoxy, silicone, and polyester. Examples thereof include resin materials such as olefins and rubbers.
  • the content of the resin material can be in the range of 5% by mass to 30% by mass in the retroreflective layer.
  • the retroreflective layer contains at least the retroreflective particles and the resin material, but may contain other components as necessary.
  • the other components include colorants such as pigments and dyes, reflective inorganic particles such as mica and aluminum particles, silane coupling agents and dispersants that improve the adhesion of the retroreflective particles and the resin material. Etc.
  • the thickness of the retroreflective layer is not particularly limited as long as the light emitted from the stress light emitting layer can be retroreflected.
  • the thickness can be in the range of 1 ⁇ m to 500 ⁇ m, for example.
  • the retroreflective layer may be not formed in a pattern, that is, the retroreflective layer may be formed so as to cover the entire surface of the substrate, but is preferably formed in a pattern.
  • the retroreflective layer is formed in a pattern, it is possible to increase the emission intensity of the emitted light from the stress luminescent layer to the pattern of the retroreflective layer when stress is applied to the stress luminescent sheet. .
  • the retroreflective layer is formed in a pattern so that the stress-stimulated luminescent sheet can be excellent in anti-counterfeiting effect and the like.
  • the shape of the retroreflective layer in plan view and the width thereof can be the same as those described in the above section “1. Stress light emitting layer”.
  • the description here is omitted. 4 and 5 described above show an example in which the retroreflective layer is formed in a pattern, and the retroreflective layer and the stress light emitting layer are formed in the same pattern shape in plan view. Is.
  • the area of the retroreflective layer in plan view and the area of the stress light emitting layer in plan view may be the same, or one of them may be large.
  • the area of the retroreflective layer may be larger than the area of the stress light emitting layer in plan view, and the retroreflective layer may be exposed from the stress light emitting layer.
  • the method for forming the retroreflective layer is not particularly limited as long as the retroreflective particles and the resin material can be contained in the retroreflective layer.
  • the method similar to the formation method of the stress light emitting layer described in the item can be used.
  • examples of the forming method include a method of forming the retroreflective layer using a retroreflective layer forming ink by a printing method or the like.
  • the retroreflective layer forming ink a material obtained by dispersing or dissolving a constituent material constituting the retroreflective layer such as the retroreflective particles and the resin material in a solvent or the like can be used.
  • Specific examples of the commercially available ink for forming the retroreflective layer include COLOSER retroreflective ink manufactured by Jujo Chemical Co., Ltd.
  • Base material supports the stress-stimulated luminescent layer and the retroreflective layer.
  • the base material is a light-shielding base material having a light-shielding property with respect to light having a predetermined wavelength, even if the base material is transparent with respect to light having a predetermined wavelength emitted from the stress-luminescent particles.
  • a light-shielding substrate is usually used.
  • the material of the base material can be reduced in thickness and has mechanical strength, solvent resistance and heat resistance that can withstand processing when manufacturing a stress light emitting layer and a retroreflective layer, and Preferably have good adhesion to the stress-stimulated luminescent layer.
  • Specific examples of the constituent material of the base material include polyethylene terephthalate (PET), polycarbonate, polyvinyl alcohol, polysulfone, polyethylene, and triacetyl cellulose (TAC).
  • the thickness of the substrate is appropriately selected according to the application and type of the stress-stimulated luminescent sheet of this embodiment, but can be in the range of 1.0 ⁇ m to 50 ⁇ m, and in particular, 1.0 ⁇ m to It is preferable to be within the range of 20 ⁇ m. This is because it is easy to make the stress light-emitting sheet flexible.
  • the base material is treated with, for example, corona treatment, ozone treatment, plasma treatment, ionizing radiation treatment, dichromate treatment, anchor on the surface of the base material.
  • surface treatment such as primer treatment may be performed.
  • primer agents such as urethane-based, acrylic-based, ethylene-vinyl acetate copolymer system, and vinyl chloride-vinyl acetate copolymer system are known as the primer agent used for the above primer treatment. You can select and use one that suits your needs.
  • the stress-stimulated luminescent sheet according to the present embodiment includes the base material, the stress-stimulated luminescent layer, and the retroreflective layer, but may have other configurations as necessary.
  • the stress-stimulated luminescent sheet of this aspect can include a filling layer formed on the same plane as the stress-stimulated luminescent layer when the stress-stimulated luminescent layer is formed in a pattern. This is because the presence of the stress-stimulated luminescent layer formed in a pattern can be concealed, and the stress-stimulated luminescent sheet can be made more excellent in the anti-counterfeiting effect.
  • FIG. 6 is a schematic plan view showing another example of the stress-stimulated luminescent sheet of this embodiment
  • FIG. 7 is a cross-sectional view taken along line A2-A2 of FIG.
  • 6 and 7 show an example in which the stress light emitting layer 3 is formed in a pattern, and the stress light emitting sheet 10 has a filling layer 4 formed on the same plane as the stress light emitting layer 3.
  • 6 and 7 indicate the same members as those in FIG. 1, and the description thereof is omitted here.
  • the filling layer is formed on the same plane as the stress light emitting layer.
  • being formed on the same plane means being formed on the same plane as the plane on which the stress light emitting layer is formed, and the portion where the stress light emitting layer is not formed in plan view. It means that it is formed.
  • the filling layer 4 is formed so that both the stress-stimulated luminescent layer 3 and the filling layer 4 are formed on the same surface of the retroreflection layer 2 so as to be in contact with the retroreflection layer 2. It can be formed together with the stress light emitting layer 3 on the same surface of the same member.
  • the filling layer is used to conceal the presence of the stress-stimulated luminescent layer, and the formation of the filling layer makes the presence of the stress-stimulated luminescent layer less noticeable than before the formation of the filling layer.
  • the color of the filling layer is not particularly limited as long as it can conceal the presence of the stress-stimulated luminescent layer, and may be monochromatic or multicolored. Furthermore, it is preferable that it is a single color from a viewpoint of making it the same color.
  • the color of the filling layer is a single color, it is preferably the same color as that of the stress-stimulated luminescent layer, and in particular, the same color as that of the stress-stimulated luminescent layer.
  • the color is the color described above, it is possible to effectively conceal the presence of the stress light-emitting layer in which the color of the filling layer is formed in a pattern. It is because it can be made excellent.
  • the same color means that the color difference in the L * a * b * color system defined by JISZ8730 is 20 or less.
  • the same color means that the color difference is within 0.5.
  • the color of the stress-stimulated luminescent layer refers to the color when no light is emitted.
  • the color of the filling layer may represent a pattern by the filling layer, and may be such that the region where the stress light emitting layer is formed is recognized as a part of the pattern. This is because it is possible to conceal the presence of the stress-stimulated luminescent layer formed in a pattern while making the stress-stimulated luminescent sheet excellent in design.
  • the constituent material of the filling layer is not particularly limited as long as it can form a filling layer of a desired color, but may contain a resin material. Moreover, the said constituent material shall contain a white pigment and another component as needed. In this embodiment, it is preferable that the constituent material has a white pigment from the viewpoint that the color of the filling layer is similar to the color of the stress light emitting layer. Since the stress-stimulated luminescent particles contained in the stress-stimulated luminescent layer are generally white, having a white pigment makes it easy to make the color of the filling layer similar to the color of the stress-stimulated luminescent layer. This is because the presence of the light emitting layer can be effectively concealed.
  • the white pigment is not particularly limited as long as it has a property of not emitting light even when stress is applied, and examples thereof include titanium dioxide, zinc white, and antimony trioxide.
  • the particle size and content of the white pigment are not particularly limited as long as the color of the filling layer can be the same color as that of the stress light emitting layer.
  • the particle diameter and content can be the same as the content of the particle diameter and content of the stress-luminescent particles described in the section “1.
  • the resin material a general resin material can be used.
  • Stress light emitting layer” can be used.
  • the resin material is preferably the same as the binder resin contained in the stress light emitting layer from the viewpoint that the color of the filling layer is similar to the color of the stress light emitting layer. This is because it is easy to make the color of the filling layer similar to the color of the stress light emitting layer, and the presence of the stress light emitting layer can be effectively concealed.
  • the other components include additives generally used together with resin materials, and the same materials as the other materials described in the above section “1. Stress light emitting layer” may be used. it can.
  • the other components are preferably the same as other materials contained in the stress luminescent layer.
  • the content ratio of the other components to the resin material is preferably the same as the content ratio of the other materials included in the stress light-emitting layer to the binder resin included in the stress light-emitting layer.
  • the filler layer preferably contains the same colorant as the colorant contained in the stress-stimulated luminescent layer. It is preferable that the content ratio with respect to the resin material is the same as the content ratio of the colorant in the stress light emitting layer with respect to the binder resin. This is because it is easy to make the filling layer have the same color as the stress light emitting layer, and the presence of the stress light emitting layer can be effectively concealed.
  • the transmittance of the filling layer in the visible light region is not particularly limited as long as the stress-stimulated luminescent layer can be concealed.
  • the transmittance can be the same as that described in the section “1. Stress light emitting layer”, for example.
  • the color of the filling layer is the same color as that of the stress light emitting layer, it is preferably the same as the stress light emitting layer.
  • the thickness of the filling layer is not particularly limited as long as the stress-stimulated luminescent layer can be concealed.
  • the thickness can be the same as that described in the section “1.
  • the thickness is preferably the same as the thickness of the stress luminescent layer. This is because it is easy to make the color of the filling layer similar to the color of the stress light emitting layer, and the presence of the stress light emitting layer can be effectively concealed.
  • the formation place of the filling layer in plan view is not particularly limited as long as the stress light emitting layer is not formed, and includes, for example, all the places where the stress light emission layer is not formed. It may include a part of the portion where the stress light emitting layer is not formed.
  • FIG. 8 shows an example in which the stress luminescent layer and the filling layer are formed so as to be in direct contact with each other, and the formation position of the filling layer in plan view includes all of the places where the stress luminescence layer is not formed. It is.
  • the filling layer may be formed for a part of the stress-stimulated luminescent layers. It is preferable that they are formed. This is because the presence of the stress light emitting layer can be effectively concealed.
  • the filling layer is formed on the same plane with respect to each of the two stress light emitting layers, and both of the two stress light emitting layers are filled layers. It is preferable that it is concealed.
  • the filling layer may be formed by any method that can stably form the filling layer on the same plane as the stress-stimulated luminescent layer.
  • a method similar to the method of forming the stress-stimulated luminescent layer may be used. it can.
  • the forming method for example, a method of preparing a filling layer by preparing a filling layer forming ink, forming a coating film of the filling layer forming ink using a printing method, and then drying the coating film, etc. Can be mentioned.
  • the order of formation of the stress light emitting layer and the filling layer is not particularly limited, and any of them may be formed first or simultaneously.
  • the stress-stimulated luminescent sheet of this embodiment can include a hiding layer that is formed on at least one surface side of the stress-stimulated luminescent layer and hides the presence of the stress-stimulated luminescent layer.
  • a concealing layer formed so as to cover the stress light emitting layer it becomes possible to effectively conceal the presence of the stress light emitting layer formed in a pattern, etc. It is because it can be made excellent.
  • the stress-stimulated luminescent sheet 10 includes the base material 1, the retroreflective layer 2, the stress-stimulated luminescent layer 3, the filling layer 4, and the concealing layer 5.
  • the example which has the concealment layer 5 formed on the surface on the opposite side to the reflection layer 2 is shown.
  • the concealing layer conceals the presence of the stress light emitting layer.
  • the concealing layer is formed on at least one surface side of the stress light emitting layer.
  • the color of such a concealing layer is not particularly limited as long as it can conceal the presence of the stress-stimulated luminescent layer, and may be monochromatic or multicolored.
  • the color of the concealing layer may be the same color as that of the stress-stimulated luminescent layer or may be a non-similar color.
  • the color of the concealment layer is, for example, a similar color, so that when the stress luminescent sheet is viewed in plan, the color difference between the stress luminescent layer formed in a pattern and the surrounding area can be reduced, This is because it is possible to effectively conceal the presence of the stress-stimulated luminescent layer.
  • it is preferable that the color of the concealing layer is lighter than the color of the stress light emitting layer.
  • the stress-stimulated luminescent sheet can be made more excellent in anti-counterfeiting effects and the like, such as effectively hiding the presence of the stress-stimulated luminescent layer formed in a pattern.
  • the color of the concealing layer is not similar to the color of the stress light emitting layer and the lightness is low, for example, when the stress light emitting layer is milky white, a purple concealing layer is used. Can be mentioned.
  • the color of the concealment layer may represent a picture by the concealment layer, and the stress light emitting layer formed in a pattern shape may be recognized as a part of the picture. This is because it is possible to conceal the presence of the stress-stimulated luminescent layer formed in a pattern while being excellent in design.
  • the constituent material of the concealment layer is not particularly limited as long as it can form a concealment layer of a desired color, but may include a resin material. Moreover, the said constituent material shall contain a white pigment and another component as needed.
  • the resin material, the white pigment, and other components can be the same as those described in the section “(1) Packing layer”, and thus description thereof is omitted here.
  • the transmittance of the concealing layer in the visible light region is not particularly limited as long as it can transmit light from the stress light emitting layer while concealing the stress light emitting layer.
  • the transmittance can be the same as that described in the section “(1) Packed layer”, for example.
  • the thickness of the concealment layer is not particularly limited as long as a concealment layer of a desired color can be formed.
  • the thickness is the same as that described in the section “(1) Filling layer”. The description here is omitted.
  • the formation location of the concealment layer in plan view may be any location that includes the location where the stress emission layer overlaps in plan view, and may include all locations where the stress emission layer is formed. In addition, it may include a part of the portion where the stress-stimulated luminescent layer is formed. Moreover, the formation location in the plan view may include both the location where the stress light emitting layer is formed and the location where the filling layer is formed.
  • the formation position in the thickness direction of the concealing layer with respect to the stress luminescent layer may be formed on at least one surface side of the stress luminescent layer, and may be only one surface side of the stress luminescent layer, Both surfaces may be used.
  • the concealing layer may be formed so as to be in contact with the stress-stimulated light emitting layer, or may be formed via another layer. Note that FIG. 8 described above shows an example in which the concealing layer is formed only on one surface side of the stress light emitting layer and is in contact with the stress light emitting layer. FIG. 8 shows an example where the concealed layer formation place in plan view includes all the places where the stress light emitting layer is formed.
  • the other configurations described above can include those generally used for stress-stimulated luminescent sheets.
  • a fluorescent material that can be excited by light emission from an interlayer adhesive layer, an ultraviolet absorbing layer, a printed layer, or a stress-stimulated luminescent layer that bonds each component such as between a retroreflective layer and a substrate for example, a fluorescent material that can be excited by light emission from an interlayer adhesive layer, an ultraviolet absorbing layer, a printed layer, or a stress-stimulated luminescent layer that bonds each component such as between a retroreflective layer and a substrate.
  • Examples thereof include a retroreflective layer filling layer formed on a flat surface.
  • the retroreflective layer filling layer a transparent resin layer, a colored resin layer, or the like can be used.
  • the filling layer for the retroreflective layer a layer having the same composition as the stress light emitting layer formed on the retroreflective layer or a layer having the same composition as the filling layer formed on the same plane as the stress light emitting layer is used. It may be used.
  • the other configurations are formed so as to cover the stress-stimulated luminescent layer and the filling layer, and so as to cover the covering filling layer, the retroreflective layer, and the retroreflective layer filling layer formed integrally with the filling layer.
  • FIG. 9A shows that the stress-stimulated luminescent sheet 10 has a heat-seal layer as the adhesive layer 6 a formed so as to cover the stress-stimulated luminescent layer 3 and the filling layer 4 having the same thickness as the stress-stimulated luminescent layer 3.
  • FIG. 9B shows that the stress light emitting sheet 10 is formed so as to cover the stress light emitting layer 3 and the filling layer 4, and has a covering filling layer 4 b formed integrally with the filling layer 4.
  • the reflective layer 2 and the retroreflective layer filling layer 4a are formed so as to cover the retroreflective layer filling layer 4a and are formed integrally with the retroreflective layer fill layer 4a.
  • the stress-stimulated luminescent sheet of this embodiment has excellent scratch resistance, and the stress-stimulated luminescent layer is produced when the stress-stimulated luminescent sheet is produced or used And the retroreflective layer can be hardly damaged.
  • the filler layer or the retroreflective layer filler layer is integrally formed, the coating filler layer and the retroreflective layer cover filler layer can be easily formed.
  • the said other structure may serve as two or more types.
  • FIG. 9A shows an example having a heat seal layer as the adhesive layer 6, but the heat seal layer 6 in FIG.
  • 9A is, for example, a concealment layer, a protective layer, a fluorescent layer, a print layer, etc. It may be used.
  • 9B shows an example in which the coating filling layer 4b and the coating filling layer 4c for retroreflective layer are used as a protective layer, the coating filling layer 4b and the coating filling for retroreflective layer in FIG. 9B are shown.
  • the layer 4c may be used as an adhesive layer such as a heat seal layer or a concealing layer.
  • the stress-light-emitting sheet of this embodiment may be one that uses a stress light-emitting sheet alone, but may be one that is used by being adhered to an adherend.
  • the retroreflective layer of the substrate Has an adhesive layer formed on the surface on the opposite side (first usage mode), a brittle layer formed on the surface of the substrate opposite to the retroreflective layer, and the brittle layer A second substrate formed on the surface of the second substrate opposite to the substrate, and an adhesive layer formed on the surface of the second substrate opposite to the brittle layer ( Second usage mode), a brittle layer formed on the surface of the substrate opposite to the retroreflective layer, a first adhesive layer formed on the same plane as the brittle layer, and the brittle layer A second layer formed on the surface of the first layer and the opposite side of the first adhesive layer, the brittle layer of the second substrate, and A second adhesive layer formed on the surface opposite to the first adhesive layer, and a cut portion that cuts the base material overlaps the retroreflective layer and the stress-stimulated luminescent layer in plan view.
  • seat of this aspect is an aspect which has the contact bonding layer formed on the surface on the opposite side to the retroreflection layer of the said base material.
  • FIG. 10 is a schematic cross-sectional view showing an example of the stress-stimulated luminescent sheet of this aspect.
  • the stress-stimulated luminescent sheet 10 according to this aspect includes the adhesive layer 6 formed on the surface of the base 1 opposite to the retroreflective layer 2.
  • the reference numerals in FIG. 10 indicate the same members as those in FIG. 1, and a description thereof will be omitted here.
  • it has the peeling sheet 7 formed on the surface on the opposite side to the base material 1 of the said contact bonding layer 6.
  • the adhesive layer it is possible to easily attach the stress-stimulated luminescent sheet to an adherend that requires anti-counterfeiting effects or design properties.
  • the stress light emitting layer should exhibit anti-counterfeiting effects and design properties by causing the stress light emitting layer to emit light by the stress applied to the stress light emitting layer when the stress light emitting sheet attached to the adherend is peeled off. Can do.
  • a specific use of such a stress-stimulated light emitting sheet of this embodiment it is attached to a ticket or a brand product, and used to make an authenticity determination by light emission when stress is applied or peeled off. Applications can be mentioned.
  • the adhesive component contained in the adhesive layer those commonly used in stress-stimulated luminescent sheets can be used.
  • a pressure-sensitive adhesive that exerts an adhesive effect by applying pressure is heated
  • examples thereof include a heat-sensitive adhesive that melts or softens and exhibits an adhesive effect.
  • the pressure-sensitive adhesive is not particularly limited as long as it can stably apply the stress-stimulated luminescent sheet to an adherend or the like.
  • a natural rubber resin a synthetic rubber resin
  • examples thereof include silicone resins, acrylic resins, vinyl acetate resins, urethane resins, acrylonitrile, hydrocarbon resins, alkylphenol resins, and rosin resins.
  • the heat-sensitive adhesive is not particularly limited as long as it can stably apply the stress-stimulated luminescent sheet to an adherend and the like.
  • polyolefin resin vinyl chloride resin, vinyl acetate Resin, vinyl chloride vinyl acetate copolymer resin, acrylic resin, polyester resin and the like.
  • the adhesive layer may contain other components as required in addition to the adhesive component.
  • the thickness of the adhesive layer is not particularly limited as long as the desired adhesiveness can be obtained, and is appropriately set according to the use and type of the stress-stimulated luminescent sheet of this embodiment. .
  • the formation position of the adhesive layer in plan view is not particularly limited as long as the stress light-emitting sheet can be stably attached to the adherend.
  • the said formation location can be a thing including the whole surface of the said base material, a thing including a part of said base material, etc.
  • the stress-stimulated luminescent sheet of this aspect may have a release sheet formed on the surface of the adhesive layer opposite to the substrate.
  • a release sheet By forming the release sheet, it is possible to prevent adhesion of the stress-stimulated luminescent sheet to a non-target adherend before the stress light-emitting sheet is bonded to the target adherend.
  • the release sheet include those in which a release layer of a silicone layer is formed on a support substrate such as a paper layer or a resin layer.
  • a second usage mode of the stress-stimulated luminescent sheet according to this mode includes a brittle layer formed on the surface of the base material opposite to the retroreflective layer, and the brittle layer. It is an aspect which has the 2nd base material formed on the surface on the opposite side to a base material, and the contact bonding layer formed on the surface on the opposite side to the said brittle layer of the said 2nd base material.
  • FIG. 11 is a schematic cross-sectional view showing an example of the stress-stimulated luminescent sheet of this embodiment.
  • the stress-stimulated luminescent sheet 10 of this aspect includes a brittle layer 8 formed on the surface of the base 1 opposite to the retroreflective layer 2, and the brittle layer 8.
  • a second substrate 1b formed on the surface opposite to the substrate 1; an adhesive layer 6 formed on the surface opposite to the brittle layer 8 of the second substrate 1b; It is what has.
  • it has the peeling sheet 7 on the surface on the opposite side to the said base material 1 of the said contact bonding layer 6.
  • the stress luminescent sheet can be easily peeled between the base material and the second base material. can do.
  • the stress light-emitting layer emits light by the stress applied to the stress light-emitting layer when the base material and the second base material are peeled off, the stress light-emitting sheet exhibits the anti-counterfeiting effect and design properties, etc. can do. Therefore, the stress-stimulated luminescent sheet can be easily separated and peeled between the base material and the second base material, and the stress-stimulated luminescent layer can emit light, thereby preventing forgery. It is because it can be made excellent in design.
  • Examples of specific uses of the stress-stimulated luminescent sheet according to this aspect include applications for authenticating by light emission when applied to a ticket or a branded product and applying stress, and applications for imparting design properties. be able to.
  • a point seal or the like adhered to the upper surface of the cap of a PET bottle so as to be peeled off, or a sticker or the like, which can be easily peeled off, and used for determining authenticity by light emission at the time of peeling. can be mentioned.
  • the brittle layer may be any layer that can easily peel the stress-stimulated luminescent sheet between the base material and the second base material.
  • a cohesive fracture layer etc. can be used.
  • a release resin When the brittle layer is a release layer, a release resin, a resin containing a release agent, a curable resin that crosslinks with ionizing radiation, or the like can be applied to the brittle layer.
  • the releasable resin include fluorine resin, silicone, melamine resin, epoxy resin, polyester resin, acrylic resin, and fiber resin.
  • the resin containing the release agent include acrylic resins, vinyl resins, polyester resins, and fiber-based resins obtained by adding or copolymerizing release agents such as fluorine resins, silicones, and various waxes. Can be mentioned.
  • curable resin that crosslinks with ionizing radiation examples include a resin containing a monomer or oligomer having a functional group that is polymerized (cured) with ionizing radiation such as ultraviolet (UV) or electron beam (EB). Can do.
  • the constituent materials of the brittle layer include natural rubber resins, butyl rubber, synthetic rubber resins such as polychloroprene and styrene-butadiene copolymer resins, and silicone resins. , Acrylic resins, alkylphenol resins, rosin resins such as rosin and hydrogenated rosin, vinyl acetate resins such as polyvinyl acetate and ethylene-vinyl acetate copolymer, urethane resins, acrylonitrile, hydrocarbon resins, etc. Can do.
  • the formation position of the brittle layer in a plan view is not particularly limited as long as the stress light-emitting sheet can be easily peeled between the base material and the second base material.
  • the thickness of the brittle layer is usually in the range of 0.5 ⁇ m to 15 ⁇ m, preferably in the range of 1 ⁇ m to 10 ⁇ m. This is because, when the thickness is within the above range, it can be easily peeled between the base material and the second base material.
  • the second substrate is not particularly limited as long as it can stably form the brittle layer and the like and can support it.
  • the adhesive layer is not particularly limited as long as it is formed on the surface of the second substrate opposite to the brittle layer and can adhere to the adherend.
  • the second base material and the adhesive layer include the base material described in the section “3. Base material” and the adhesive layer described in the section “(1) First usage mode”. Since it can be the same as that of the contents, description thereof is omitted here.
  • the third usage mode of the stress-stimulated luminescent sheet according to this mode includes a brittle layer formed on the surface of the substrate opposite to the retroreflective layer, and the same plane as the brittle layer.
  • a second adhesive layer formed on the surface opposite to the first adhesive layer, and the cut portion for cutting the base material is a plan view of the retroreflective layer and the stress light emitting layer. It is an aspect in which it is formed so as to overlap, and the cut portion is formed so as to surround the first adhesive layer in plan view.
  • FIG. 12 is a schematic plan view showing an example of the stress-stimulated luminescent sheet of this aspect
  • FIG. 13 is a cross-sectional view taken along line A3-A3 of FIG.
  • the stress-stimulated luminescent sheet 10 of this aspect includes a brittle layer 8 formed on the surface of the base 1 opposite to the retroreflective layer 2, and the brittle layer 8.
  • . 12 and 13 indicate the same members as those shown in FIG. 1, and a description thereof will be omitted here. In FIG.
  • the description of the retroreflective layer and the stress-stimulated luminescent layer is omitted for ease of explanation. Moreover, in this example, it has the peeling sheet 7 on the surface on the opposite side to the base material 1 of the 2nd contact bonding layer 6b.
  • the cut portion is formed in the base material, so that when the base material is cut and separated, The reflective layer and the stress-stimulated luminescent layer can also be easily cut and separated.
  • seat can be easily isolate
  • the stress-stimulated luminescent layer can easily emit light along the portion where the cut portion is formed.
  • notch part is formed so that the said adhesive layer may be enclosed in planar view, and the said contact bonding layer is formed among the stress light emission sheets isolate
  • the stress can be applied by attaching it as a point seal, lottery, etc. as in the second usage aspect, or by attaching it to a package of cosmetics, medicines, etc.
  • the use which performs authenticity determination etc. by light emission at the time of peeling a light emitting sheet can be mentioned.
  • FIG. 14 is an explanatory diagram for explaining a method of separating the stress-stimulated light-emitting sheet of this embodiment adhered to the adherend.
  • a portion 10b around the cut portion 11 By pulling a portion 10b around the cut portion 11 with a predetermined pulling force p (FIG. 14 (a)), the portion 10a of the stress-stimulated light emitting sheet 10 on which the adhesive layer 6a is formed is bonded onto the adherend 20.
  • FIG. 14B shows an example in which the portion 10b around the cut portion 11 of the stress-stimulated light emitting sheet 10 is peeled and separated between the base material and the second base material (FIG. 14B).
  • symbol in FIG. 14, since it shows the member same as the thing of FIG. 13, description here is abbreviate
  • the said brittle layer 8 shows the example which peels between the said brittle layer 8 and the said 2nd base material 1b.
  • the notch cuts the base material.
  • the cutting depth of the cut portion may not penetrate the base material in the thickness direction, but is the same as the thickness of the base material, that is, penetrates the base material in the thickness direction. It is preferable. This is because the stress-stimulated luminescent sheet can be more easily separated.
  • FIG. 13 already described shows an example in which the cutting depth of the cut portion with respect to the base material is the same as the thickness of the base material, that is, penetrates the base material in the thickness direction.
  • FIG. 14 which has already been described shows an example in which the cutting depths of the cut portion with respect to the base material, the retroreflective layer, and the stress light emitting layer are the same as the respective thicknesses.
  • the shape of the cut portion in plan view is not particularly limited as long as the stress-stimulated light emitting sheet can be easily separated, but a broken line shape in which cuts are intermittently formed, a dotted line shape, etc. It can be a line shape in which cuts are continuously formed.
  • FIG. 12 which has already been described shows an example in which the shape of the cut portion in a plan view is linear.
  • the formation location of the cut portion in plan view that is, the pattern shape of the cut portion surrounds the adhesive layer in plan view.
  • surrounding the adhesive layer in plan view means that the cut portion is formed so as to overlap the end portion of the adhesive layer in plan view and surrounds the same portion as the region where the adhesive layer is formed. Alternatively, it is formed so as to surround the outer periphery of the end portion of the adhesive layer, thereby surrounding the region and its peripheral region.
  • the phrase “a cut portion surrounds” includes not only a cut portion but a portion surrounded by a cut portion and an end portion of a base material.
  • the method for forming the cut portion is not particularly limited as long as the cut portion can be stably formed in the base material.
  • Examples of the forming method include a method in which an original plate in which a convex blade is placed at a position where a cut portion is to be formed is pressed against the base material, and then the original plate is peeled off.
  • the said 1st contact bonding layer can be made to be the same as that of the content as described in the above-mentioned "(1) 1st usage condition" except being formed on the same plane as the said brittle layer.
  • the second base material and the brittle layer may be specifically the same as the contents described in the above-mentioned sections “3. Base material” and “(2) Second usage mode”. Therefore, explanation here is omitted.
  • the stress-stimulated luminescent sheet of this embodiment may be used without being separated.
  • the stress-stimulated luminescent layer may be used by emitting light. Examples of usage modes in which the stress-stimulated luminescent sheet is separated and the stress-stimulated luminescent layer emits light during the separation include, for example, a mode having a cut portion provided to cut the stress-stimulated luminescent sheet in plan view. .
  • FIG. 15 is a schematic plan view showing an example of the stress-stimulated luminescent sheet according to the present embodiment
  • FIG. 15 and 16 in the stress-stimulated luminescent sheet of this aspect, the cut portion is formed in all layers of the base material 1, the retroreflective layer 2, and the stress-stimulated luminescent layer 3.
  • 15 and 16 indicate the same members as those shown in FIG. 13, and a description thereof will be omitted here.
  • the shape of the cut portion 11 in plan view is a broken line.
  • the stress-stimulated luminescent sheet can be easily cut and separated at the cut portion, and at the time of cutting and separating at the cut portion,
  • the stress-stimulated luminescent layer can be easily made to emit light along the portion where the cut portion is formed.
  • a movie or concert ticket can be cited.
  • a movie or concert ticket can be cited.
  • the notch at the place where the ticket stub is cut and separated, it is possible to confirm the light emission of the stress luminescent layer simultaneously with the cutting and separation of the ticket. And authenticity determination and the like can be easily performed.
  • the layer in which the cut portion is formed may be at least one layer constituting the stress luminescent sheet, and may be formed on all of the base material, the retroreflective layer, and the stress luminescent layer.
  • the base material, the retroreflective layer, and the stress-stimulated luminescent layer may be formed on a part of the layers.
  • the layer in which the cut portion is formed includes all of the base material, the retroreflective layer, and the stress-stimulated luminescent layer, so that the stress-stimulated luminescent sheet can be easily cut and separated along the cut portion. Because you can.
  • the layer in which the cut portion is formed is formed on a part of the base material, the retroreflective layer, and the stress light-emitting layer
  • the base is selected from the base material, the retroreflective layer, and the stress light-emitting layer.
  • the cut portion for cutting the base material is formed so as to overlap with both the retroreflective layer and the stress light emitting layer in plan view
  • the presence of the cut portion is referred to as the stress light emission. It can be concealed by the layer and the retroreflective layer. Therefore, the stress-stimulated luminescent sheet can be made more excellent in anti-counterfeiting effects and the like.
  • the formation location of the cut portion in plan view that is, the pattern shape of the cut portion, is appropriately set according to the type and application of the stress-stimulated luminescent sheet of this embodiment.
  • the shape of the cut portion in plan view, the cutting depth for each component of the stress light-emitting sheet, the formation method, and the like can be the same as the contents described in the above section “(3) Third usage mode”. Therefore, explanation here is omitted.
  • the stress light-emitting sheet in which the cut portion is formed in the base material first, a release sheet, a first adhesive layer, a second base material, a brittle layer, a second adhesive layer, and a base material Prepare a laminated body laminated in this order, and press the original plate on which convex blades are arranged at the location where the cut portion is to be formed from the base material side of the laminated body, thereby forming the cut portion in the base material. Then, after peeling the original plate, a method of forming a retroreflective layer and a stress light emitting layer in this order on the base material of the laminate can be mentioned.
  • Applications of the stress-stimulated luminescent sheet of this embodiment can be used for anti-counterfeiting applications and design properties, such as credit cards and cash cards. Moreover, it shall have an adhesive layer which can adhere
  • FIG. 17A is a schematic plan view showing an example in which the forgery prevention medium is used as a banknote
  • FIG. 17B is a cross-sectional view taken along line A5-A5 of FIG. In FIG.
  • the stress-stimulated luminescent sheet 10 is formed by laminating the heat seal layer as the adhesive layer 6, the base material 1, the retroreflective layer 2, the pattern-like stress luminescent layer 3 and the filling layer 4, and the hiding layer 5 in this order. It has a structure and is transferred to the adherend 101 via the adhesive layer 6.
  • FIG. 17 shows an example in which the line-shaped stress-stimulated light-emitting layer 3 is formed in a pattern so as to represent the number “123”, and the anti-counterfeit medium 100 has a printed layer 104 representing the number “500”. It is. Further, in FIG. 17A, the description of the concealment layer is omitted for easy explanation.
  • the anti-counterfeit paper as the anti-counterfeit medium is formed by forming the stress light-emitting sheet of this embodiment in a thread shape, and inserting and embedding it in the paper layer, as illustrated in FIG. 200 includes a paper layer 201 and a strip-shaped thread base material 202 embedded in the paper layer 201, and the thread base material 202 is provided on one surface of the paper layer 201. Is formed in the plan view, and the thread base material 202 is the stress-stimulated luminescent sheet 10.
  • FIG. 200 is the stress-stimulated luminescent sheet 10.
  • FIG. 18A is a schematic plan view showing an example in which the forgery prevention paper is used as a banknote
  • FIG. 18B is a cross-sectional view taken along line A6-A6 of FIG.
  • the stress light emitting sheet 10 as the thread base material includes the base material 1, the retroreflective layer 2, the patterned stress light emitting layer 3 and the filling layer 4, and the hiding layer 5, and is included in the stress light emitting sheet 10.
  • the stress-stimulated luminescent layer 3 is disposed on the side exposed from the opening 203, and the base material 1 is disposed on the inner side of the paper layer 201.
  • the paper layer is formed using a paper material capable of forming a paper layer
  • the paper is placed in a state where the thread base material is disposed in the paper material.
  • the thread base material is embedded in the paper layer.
  • the thread base material is usually a band-like material embedded in the paper layer.
  • the formation position of the stress light-emitting sheet in this aspect in a forgery prevention medium is preferably a position where the forgery prevention medium is likely to be deformed or a position where stress is easily applied.
  • Examples of such a formation position include a central portion near the center of the anti-counterfeit medium and the vicinity of a portion where another security member such as a hologram layer is disposed.
  • stress light emitting sheet More specific uses include, for example, receivables, deposit certificates, receipts, bills, checks, bankbooks, magnetic forms, transfer cards, gift certificates, coupon tickets, bags, gift certificates, movie tickets, membership tickets. , Beer vouchers and other securities, evidence securities, etc.
  • the above uses include driver's license, identification card such as employee ID card, membership card, admission ticket for entrance examination, passport, banknote, gift certificate, point card, stock certificate, lottery ticket, horse ticket, bankbook, If it is used forged, such as a ticket, a pass ticket, an air ticket, an admission ticket for various events, an amusement ticket, a cash voucher for transportation, etc., it may damage the holder of the securities or the issuing company. Things can be mentioned.
  • high-priced products for example, high-grade watches, high-grade leather products, precious metal products, jewelry, etc. Examples include storage boxes and cases for expensive products.
  • the stress-stimulated luminescent sheet of this aspect is formed on one surface of the transparent substrate, the stress-stimulated luminescent layer containing stress-stimulated luminescent particles and a binder resin, and the transparent substrate of the stress-stimulated layer. Is formed on the opposite surface and has a retroreflective layer containing retroreflective particles and a resin material.
  • FIG. 19 is a schematic cross-sectional view showing an example of the stress-stimulated luminescent sheet of this aspect.
  • the stress-stimulated luminescent sheet 10 of this embodiment includes a transparent substrate 1 a and the stress-stimulated luminescent layer 3 that is formed on one surface of the transparent substrate 1 a and contains stress-stimulated luminescent particles and a binder resin.
  • the retroreflective layer 2 is formed on the surface of the stress-stimulated luminescent layer 3 opposite to the transparent substrate 1a and contains retroreflective particles and a resin material.
  • the emitted light emitted from the stress light emitting layer to the retroreflective layer side can be efficiently reflected out of the light emitted from the stress light emitting layer, and the stress light emission.
  • Light emitted from the particles can be sufficiently delivered to the observer from the transparent substrate side. For this reason, for example, when the stress light emitting layer is formed in a pattern, the observer can sufficiently observe the light emission in a desired pattern. Therefore, the stress-stimulated luminescent sheet has excellent anti-counterfeiting effects and design properties.
  • the said stress light emitting layer can be protected with the said transparent base material and the said retroreflection layer.
  • the stress-stimulated luminescent sheet can exhibit a forgery prevention effect and the like over a long period of time.
  • the retroreflective layer is excellent in foil breakability because the retroreflective particles are dispersed in the resin material. For this reason, the said retroreflection layer is easy to cut
  • the stress-stimulated luminescent layer also has excellent foil cutting properties because stress-stimulated luminescent particles are dispersed in the binder resin, and can be easily cut into any shape. For this reason, the stress light emitting layer and the retroreflective layer can be easily cut into arbitrary shapes, and the stress light emitting layer can emit light along the cut portion. For this reason, the stress-stimulated luminescent sheet can be made excellent in anti-counterfeiting and design properties.
  • the stress-stimulated luminescent sheet of this embodiment has a transparent substrate, a stress-stimulated luminescent layer, and a retroreflective layer.
  • a transparent substrate a transparent substrate
  • a stress-stimulated luminescent layer a stress-stimulated luminescent layer
  • a retroreflective layer a structure in the stress light-emitting sheet of this embodiment will be described.
  • the stress-stimulated luminescent layer in this embodiment contains stress-stimulated luminescent particles and a binder resin.
  • the stress-stimulated luminescent layer is formed on one surface of the transparent substrate.
  • the retroreflective layer is formed on the surface of the stress-stimulated luminescent layer opposite to the transparent substrate.
  • the retroreflective layer formed on the stress-stimulated luminescent layer is not limited to those in which the stress-stimulated luminescent layer and the retroreflective layer are formed as separate layers. Thus, it includes those in which stress-stimulated luminescent particles are included at a high concentration on the transparent substrate side, and particles for retroreflective particles are included at a high concentration on the side opposite to the transparent substrate side.
  • FIG. 19 already described shows an example in which the stress light emitting layer 3 and the retroreflective layer 2 are formed as separate layers.
  • the stress-stimulated luminescent layer 3 and the retroreflective layer 2 are formed as the same layer, the stress-stimulated luminescent particles 13 are included at a high concentration on the transparent substrate 1a side, and the retroreflective particles 12 are included in the transparent substrate 1a.
  • a high concentration is included on the side opposite to the side.
  • omitted is abbreviate
  • the stress-stimulated luminescent layer contains stress-stimulated luminescent particles and a binder resin.
  • Stress-stimulated luminescent particles have a property that the particles themselves emit light by strain energy applied from the outside, and a property that changes the luminescence intensity in proportion to the strain energy. Anything is acceptable.
  • the type of stress-stimulated luminescent material constituting the stress-stimulated luminescent particles is not limited to one using only one type, and two or more types may be used. In this embodiment, it is preferable that there are two or more kinds of the stress-stimulated luminescent materials.
  • the stress-stimulated luminescent layer can have regions with different luminescent colors. For example, in the stress luminescent layer 3 shown in FIG. 21, the region indicated by x is a first luminescent color region containing stress luminescent particles made of the first stress luminescent material, and the region indicated by y is the first. It can be set as the area
  • the content of the stress-stimulated luminescent particles may be one type, that is, the content of the stress-stimulated luminescent particles may be uniform in the stress-stimulated luminescent layer. It is preferable that a light emitting layer has a site
  • Binder resin is not particularly limited as long as it can stably disperse and fix the stress-stimulated luminescent particles and transmit light emitted from the stress-stimulated luminescent particles.
  • Examples of such a binder resin include those described in the section “(b) Binder resin” in “(1) Constituent material of stress luminescent layer” in “1. Since it can be the same as that of the contents, description thereof is omitted here.
  • the stress-stimulated luminescent layer has stress-stimulated luminescent particles and a binder resin, but may contain other materials as necessary. Such other materials are described in the section “(c) Other components” of “(1) Constituent material of stress luminescent layer” of “1. Stress luminescent layer” of “A. First embodiment” above. Since it can be made the same as the content of description, description here is abbreviate
  • the stress-stimulated luminescent layer may not be formed in a pattern, that is, the stress-stimulated luminescent layer may be formed so as to cover the entire surface of the transparent substrate. It is preferable.
  • the stress light emitting layer By forming the stress light emitting layer in a pattern, the stress light emitting layer can emit light in a pattern in plan view when stress is applied to the stress light emitting sheet. For this reason, it is because the stress light emission sheet
  • FIG. 22 is a schematic plan view showing another example of the stress-stimulated luminescent sheet of this embodiment
  • FIG. 23 is a cross-sectional view taken along line B1-B1 of FIG.
  • FIG. 19 already described shows an example in which the stress light emitting layer 3 is formed on the entire surface of the transparent substrate 1a
  • FIGS. 22 and 23 show examples in which the stress light emitting layer 3 is formed in a pattern.
  • Is. 22 and 23 show an example in which other layers are not formed on the same plane as the stress light emitting layer 3 except for the region where the stress light emitting layer 3 is formed in a pattern.
  • 22 and 23 indicate the same members as those in FIG. 19, and a description thereof will be omitted here.
  • FIG. 22 omits the description of the retroreflective layer 2 for ease of explanation.
  • stress-stimulated luminescent layer can be the same as those described in the section “(2) Others” of “1. Stress-stimulated luminescent layer” in “A. First embodiment”. Therefore, explanation here is omitted.
  • Retroreflective layer The retroreflective layer in this aspect is formed on one surface of the stress-stimulated luminescent layer.
  • the retroreflective layer contains retroreflective particles and a resin material.
  • the retroreflective layer contains retroreflective particles and a resin material.
  • Retroreflective layer of “A. First embodiment”. Since it can be the same as that of the contents, description thereof is omitted here.
  • Retroreflective layer The thickness of the retroreflective layer is not particularly limited as long as the light emitted from the stress light emitting layer can be retroreflected.
  • Retroreflective layer can be the same as the contents described in the section “(2) Retroreflective layer” of “2. Retroreflective layer” in “A. First embodiment”. The description here is omitted.
  • FIG. 22 and FIG. 23 described above show an example in which the retroreflective layer 2 is formed in a pattern, and the retroreflective layer 2 and the stress light emitting layer 3 have the same pattern shape in plan view. Is formed.
  • the transparent base material in this aspect supports a stress light-emitting layer and a retroreflective layer.
  • the transparent substrate is transparent to light having a predetermined wavelength emitted from the stress-stimulated luminescent particles.
  • the transparency of the transparent substrate can be the same as the transparency of the stress light emitting layer described in the section “(1) Stress light emitting layer”.
  • the total light transmittance of the transparent substrate is 20% or more, more preferably 60% or more.
  • permeability can be made to be the same as that of the method as described in the above-mentioned "(1) Stress light emitting layer" section.
  • the constituent material of the transparent base material can be reduced in thickness, and has mechanical strength, solvent resistance and heat resistance that can withstand processing when producing a stress light emitting layer and a retroreflective layer, Furthermore, the thing with favorable adhesiveness with a stress light emitting layer is preferable.
  • Specific examples of the constituent material of the transparent substrate include polyethylene terephthalate (PET), polycarbonate, polyvinyl alcohol, polysulfone, polyethylene, and triacetyl cellulose (TAC).
  • the transparent substrate may be a hologram layer such as a volume hologram layer on which a volume hologram is recorded or a relief hologram layer on which a relief hologram is recorded.
  • the stress-stimulated luminescent sheet of the present embodiment has the transparent substrate, the stress-stimulated luminescent layer, and the retroreflective layer, but may have other configurations as necessary.
  • the stress-stimulated luminescent sheet of this aspect can include a filling layer formed on the same plane as the stress-stimulated luminescent layer when the stress-stimulated luminescent layer is formed in a pattern. This is because the presence of the stress-stimulated luminescent layer formed in a pattern can be concealed, and the stress-stimulated luminescent sheet can be made more excellent in the anti-counterfeiting effect.
  • FIG. 24 is a schematic plan view showing another example of the stress-stimulated luminescent sheet of this embodiment
  • FIG. 25 is a cross-sectional view taken along line B2-B2 of FIG.
  • 24 and 25 show an example in which the stress light emitting layer 3 is formed in a pattern, and the stress light emitting sheet 10 has a filling layer 4 formed on the same plane as the stress light emitting layer 3.
  • 24 and 25 indicate the same members as those in FIG. 19, and a description thereof will be omitted here.
  • the filling layer is formed so that both the stress-stimulated luminescent layer 3 and the filling layer 4 are in contact with the transparent substrate 1a on the same surface of the transparent substrate 1a.
  • the filling layer 4 can be formed on the same surface of the same member together with the stress light emitting layer 3.
  • the formation place of the filling layer in plan view is not particularly limited as long as the stress light emitting layer is not formed, and includes, for example, all the places where the stress light emission layer is not formed. It may include a part of the portion where the stress light emitting layer is not formed.
  • the stress light emitting layer 3 and the filling layer 4 are formed so as to be in direct contact with each other, and the formation positions of the filling layer 4 in plan view include all the places where the stress light emitting layer 3 is not formed.
  • FIG. 24 and FIG. 25 described above are formed so that the stress light emitting layer 3 and the filling layer 4 are not in direct contact with each other, and the stress light emitting layer 3 is formed at the formation position of the filling layer 4 in plan view. An example including a part of a portion that is not present is shown.
  • symbol in FIG. 26, since it shows the member same as the thing of FIG. 25, description here is abbreviate
  • the stress-stimulated luminescent sheet of this embodiment can include a hiding layer that is formed on at least one surface side of the stress-stimulated luminescent layer and hides the presence of the stress-stimulated luminescent layer.
  • a concealing layer formed so as to cover the stress light emitting layer it becomes possible to effectively conceal the presence of the stress light emitting layer formed in a pattern, etc. It is because it can be made excellent.
  • FIG. 26 which has already been described shows an example in which the stress-stimulated luminescent sheet 10 has a concealing layer 5 formed on the surface of the transparent substrate 1 a opposite to the stress-stimulated luminescent layer 3.
  • FIG. 26 described above shows an example in which the concealing layer 5 is formed only on one surface side of the stress-stimulated luminescent layer 3 and is formed through the transparent substrate 1a.
  • FIG. 26 shows an example in which the formation place of the concealment layer 5 in plan view includes all of the places where the stress light emitting layer 3 is formed.
  • the other configurations described above can include those generally used for stress-stimulated luminescent sheets.
  • attaches each structure, such as between a transparent base material and a stress light emitting layer, can be mentioned, for example.
  • Other configuration” of “A. First embodiment” can be used.
  • the other configuration may include a side-side retroreflective layer formed on the same plane as the stress light emitting layer when the stress light emitting layer is formed in a pattern.
  • the side-side retroreflective layer protects the stress-stimulated luminescent layer formed in a pattern, and reflects the light emitted from the side of the stress-stimulated luminescent layer, thereby increasing the luminous efficiency.
  • the constituent material of the said side surface side retroreflection layer it can be made to be the same as that of the content as described in the said "2. Retroreflective layer.”
  • the method of forming so that a retroreflection layer may also cover the side surface of a stress light emitting layer can be mentioned, for example.
  • the above-mentioned forming method is applied to the retroreflective layer forming ink by coating the retroreflective layer forming ink on the surface of the stress luminescent layer opposite to the transparent substrate and on the same plane as the stress luminescent layer.
  • the side-surface side retroreflective layer can be formed integrally with the retroreflective layer.
  • the stress-light-emitting sheet of this embodiment may be one that uses a stress light-emitting sheet alone, but may be one that is used by being adhered to an adherend.
  • the embodiment to be used by adhering to the adherend is not particularly limited as long as it has an adhesive layer used for adhesion to the adherend.
  • the stress light emitting layer of the transparent substrate is used.
  • a mode having an adhesive layer formed on the surface opposite to the surface (first usage mode), a mode having an adhesive layer formed on the surface opposite to the stress-stimulated luminescent layer of the retroreflective layer (first mode) 2 usage mode), a brittle layer formed on the surface of the transparent substrate opposite to the stress-stimulated luminescent layer, and a surface of the brittle layer formed on the surface opposite to the transparent substrate.
  • the aspect (4th usage aspect) etc. which are formed in this, and the said notch part is formed so that the said 1st contact bonding layer may be enclosed on planar view can be mentioned.
  • seat of this aspect is an aspect which has the contact bonding layer formed on the surface on the opposite side to the stress light emission layer of the said transparent base material.
  • FIG. 28 is a schematic cross-sectional view showing an example of the stress-stimulated luminescent sheet of this aspect.
  • the stress-stimulated luminescent sheet 10 of this embodiment has an adhesive layer 6 formed on the surface of the transparent substrate 1a opposite to the stress-stimulated luminescent layer 3.
  • the reference numerals in FIG. 28 indicate the same members as those in FIG. 19, and a description thereof will be omitted here.
  • it has the peeling sheet 7 formed on the surface on the opposite side to the transparent base material 1a of the said contact bonding layer 6.
  • the adhesive layer it is possible to easily attach the stress-stimulated luminescent sheet to an adherend that requires anti-counterfeiting effects or design properties.
  • the stress light emitting layer should exhibit anti-counterfeiting effects and design properties by causing the stress light emitting layer to emit light by the stress applied to the stress light emitting layer when the stress light emitting sheet attached to the adherend is peeled off. Can do.
  • the stress-stimulated luminescent sheet of this embodiment there is an application to be applied to an adherend having transparency. Specifically, as an adherend having transparency, a plastic bottle is used.
  • a package film such as a decorative shrink film to be wrapped and used with the transparent substrate side facing outwards, for example, imparting design by light emission when deforming or crushing a package such as a PET bottle
  • a package film such as a decorative shrink film to be wrapped and used with the transparent substrate side facing outwards
  • imparting design by light emission when deforming or crushing a package such as a PET bottle
  • it can be applied to tickets and brand products as adherends having transparency, and uses for determining authenticity by light emission when stress is applied or peeled off, uses for providing design properties, etc. it can.
  • the adherend having transparency means that the light emission from the back side of the stress-stimulated luminescent sheet can be observed when the stress-stimulated luminescent sheet is bonded to the adherend,
  • the entire surface is not limited to the transparent material, and any material may be used as long as it has a transmission part capable of transmitting the light emitted from the stress light-emitting layer at the place where the stress light-emitting sheet is attached.
  • the formation position of the adhesive layer in plan view is not particularly limited as long as the stress light-emitting sheet can be stably attached to the adherend.
  • the said formation location can be the thing including the whole surface of the said transparent base material, the thing containing a part of said transparent base material, etc.
  • the formation location includes a part of the transparent substrate, that is, the adhesive layer is formed in a pattern.
  • the stress-stimulated luminescent sheet of this aspect may have a release sheet formed on the surface of the adhesive layer opposite to the transparent substrate.
  • the release sheet can be the same as that described in the section “(1) First use mode” of “5. Stress light emitting sheet” in “A. First embodiment”. Description of is omitted.
  • a second usage mode of the stress-stimulated luminescent sheet of this mode is a mode having an adhesive layer formed on the surface of the retroreflective layer opposite to the stress-stimulated luminescent layer.
  • FIG. 29 is a schematic cross-sectional view showing an example of the stress-stimulated luminescent sheet of this aspect.
  • the stress-stimulated luminescent sheet 10 of this aspect has an adhesive layer 6 formed on the surface of the retroreflective layer 2 on the side opposite to the stress-stimulated luminescent layer 3.
  • the reference numerals in FIG. 29 indicate the same members as those in FIG. 19, and a description thereof will be omitted here.
  • it has the peeling sheet 7 formed on the surface on the opposite side to the retroreflection layer 2 of the said contact bonding layer 6.
  • the adhesive layer it is possible to easily attach the stress-stimulated luminescent sheet to an adherend that requires anti-counterfeiting effects or design properties.
  • the stress light emitting layer should exhibit anti-counterfeiting effects and design properties by causing the stress light emitting layer to emit light by the stress applied to the stress light emitting layer when the stress light emitting sheet attached to the adherend is peeled off. Can do.
  • a sealing seal to be attached to a packaging material such as corrugated cardboard can be mentioned. For example, by applying light to the stress-stimulated luminescent sheet or emitting light when peeling.
  • An application for confirming that it is unopened an application for determining authenticity, and the like.
  • it can be applied to a ticket, a branded product or the like and used for performing authenticity determination by light emission when stress is applied or peeled off, and a design imparting design.
  • an adherend in this aspect it is not limited to what has transparency, What has light-shielding property may be sufficient.
  • a third usage mode of the stress-stimulated luminescent sheet according to the present mode includes a brittle layer formed on the surface of the transparent substrate opposite to the stress-stimulated luminescent layer, and the brittle layer.
  • a second transparent substrate formed on the surface opposite to the transparent substrate; and an adhesive layer formed on the surface of the second transparent substrate opposite to the brittle layer. It is an aspect.
  • FIG. 30 is a schematic cross-sectional view showing an example of the stress-stimulated luminescent sheet of this aspect.
  • the stress-stimulated luminescent sheet 10 of this aspect includes a fragile layer 8 formed on the surface of the transparent substrate 1 a opposite to the stress-stimulated luminescent layer 3, and the fragile layer 8.
  • the second transparent base material 1ab formed on the surface opposite to the transparent base material 1a and the adhesive formed on the surface opposite to the brittle layer 8 of the second transparent base material 1ab.
  • it has the peeling sheet 7 on the surface on the opposite side to the said transparent base material 1a of the said contact bonding layer 6.
  • the stress-stimulated luminescent sheet is easily peeled between the transparent base material and the second transparent base material.
  • the stress light emitting layer emits light by the stress applied to the stress light emitting layer when the transparent base material and the second transparent base material are separated from each other, thereby exhibiting the anti-counterfeit effect and designability of the stress light emitting sheet.
  • the stress-stimulated luminescent sheet can be easily separated and peeled between the transparent substrate and the second transparent substrate, and the stress-stimulated luminescent layer can emit light. It is because it can be made excellent in the prevention effect and the designability.
  • such a stress-stimulated light-emitting sheet of this embodiment As a specific use of such a stress-stimulated light-emitting sheet of this embodiment, it is applied to a ticket or a brand product as an adherend having transparency, and is used for authenticity determination by light emission when stress is applied, The use etc. which provide designability can be mentioned. Furthermore, as another specific application, authenticity determination or the like is performed by emitting light when peeling off the stress-stimulated light-emitting sheet by sticking it on a package such as a cosmetic or chemical as an adherend having transparency. Applications can be mentioned.
  • the brittle layer may be any layer that can easily peel the stress-stimulated luminescent sheet between the transparent substrate and the second transparent substrate.
  • the formation location of the brittle layer in plan view is not particularly limited as long as the stress-stimulated luminescent sheet can be easily peeled between the transparent substrate and the second transparent substrate.
  • Other matters regarding the brittle layer are the same as those described in the section “(2) Second usage mode” of “5. Stress luminescent sheet” of “A. First mode”. Since it is possible, explanation here is omitted.
  • the second transparent substrate is not particularly limited as long as it can stably form the brittle layer and the like and can support it.
  • the adhesive layer is not particularly limited as long as it is formed on the surface of the second transparent substrate opposite to the brittle layer and can adhere to the adherend.
  • the second transparent base material and the adhesive layer described above are the transparent base material described in the above-mentioned section “3. Transparent base material” and the above-mentioned “(1) First usage mode”. Since it can be the same as the content of the adhesive layer, the description here is omitted.
  • a fourth usage mode of the stress-stimulated luminescent sheet of this mode is the same plane as the brittle layer formed on the surface of the transparent substrate opposite to the stress-stimulated luminescent layer.
  • the brittle layer and the second adhesive layer formed on the surface opposite to the first adhesive layer, and the cut portion that cuts the transparent substrate includes the retroreflective layer and the stress.
  • the light emitting layer is formed so as to overlap with the light emitting layer in plan view, and the cut portion is formed so as to surround the first adhesive layer in plan view.
  • FIG. 31 is a schematic plan view showing an example of the stress-stimulated luminescent sheet of this aspect
  • FIG. 32 is a cross-sectional view taken along line B3-B3 of FIG.
  • the stress-stimulated luminescent sheet 10 of this embodiment includes a fragile layer 8 formed on the surface of the transparent substrate 1a opposite to the stress-stimulated luminescent layer 3, and the fragile layer.
  • the first adhesive layer 6a formed on the same plane as 8 and the second transparent substrate formed on the surface of the brittle layer 8 and the first adhesive layer 6a opposite to the transparent substrate 1a.
  • the transparent substrate 1 a Is formed so as to overlap the retroreflective layer 2 and the stress-stimulated light emitting layer 3 in plan view, and further, the cut portion 11 is formed so as to surround the first adhesive layer 6a in plan view. It is what is done.
  • symbol in FIG.31 and FIG.32 since it shows the member same as the thing of FIG. 19, description here is abbreviate
  • the description of the retroreflective layer and the stress light emitting layer is omitted for ease of explanation.
  • it has the peeling sheet 7 on the surface on the opposite side to the transparent base material 1a of the 2nd contact bonding layer 6b.
  • the retroreflective layer and the stress-stimulated luminescent layer are excellent in foil cutting properties, when the transparent substrate is cut and separated, the cut portion is formed in the transparent substrate.
  • the retroreflective layer and the stress light-emitting layer can also be easily cut and separated.
  • seat can be easily isolate
  • the stress-stimulated luminescent layer can easily emit light along the portion where the cut portion is formed.
  • notch part is formed so that the said adhesive layer may be enclosed in planar view, and the said contact bonding layer is formed among the stress light emission sheets isolate
  • such a stress-stimulated luminescent sheet of this aspect is affixed as a point seal, lottery, etc. as an adherend having transparency, cosmetics, chemicals, etc.
  • it can be applied to a package to perform authenticity determination or the like by light emission when the stress light-emitting sheet is peeled off.
  • it is possible to emit a stress-stimulated light emitting layer in a pattern along the notch, so that a point seal or the like can be used for more advanced authentication, etc. can do.
  • FIG. 33 is an explanatory view for explaining a method of separating the stress-stimulated luminescent sheet of this embodiment adhered to the adherend.
  • a portion 10b around the cut portion 11 By pulling a portion 10b around the cut portion 11 with a predetermined pulling force p (FIG. 33 (a)), the portion 10a of the stress-stimulated light emitting sheet 10 on which the adhesive layer 6a is formed is bonded onto the adherend 20
  • FIG. 33B shows an example in which the portion 10b around the cut portion of the stress-stimulated luminescent sheet 10 is peeled and separated between the transparent substrate 1a and the second transparent substrate 1ab. )).
  • the reference numerals in FIG. 33 indicate the same members as those in FIG. 32, and thus the description thereof is omitted here.
  • the brittle layer 8 is peeled between the brittle layer 8 and the second transparent substrate 1ab.
  • the notch cuts the transparent substrate.
  • the cutting depth of the cut portion may not penetrate the transparent base material in the thickness direction, but is the same as the thickness of the transparent base material, that is, penetrates the transparent base material in the thickness direction. It is preferable. This is because the stress-stimulated luminescent sheet can be more easily separated.
  • FIG. 32 already demonstrated shows the example which the cutting depth with respect to the transparent base material 1a of the said cut
  • notch part 11 is the same as the thickness of the said transparent base material 1a, ie, penetrates the said transparent base material 1a in the thickness direction. It is.
  • FIG. 31 already described shows an example in which the shape of the cut portion 11 in a plan view is linear.
  • the method for forming the cut portion is not particularly limited as long as the cut portion can be stably formed in the transparent substrate.
  • Examples of the forming method include a method of pressing an original plate in which a convex blade is disposed at a position where a cut portion is desired to be formed, and then peeling the original plate.
  • the first adhesive layer may be the same as the content of the adhesive layer described in the section “(1) First usage mode” except that the first adhesive layer is formed on the same plane as the brittle layer. .
  • the second transparent base material and the brittle layer specifically, the transparent base material and the brittle material described in the above sections “3. Transparent base material” and “(3) Third usage mode” Since it can be the same as the contents of the layer, description thereof is omitted here.
  • (A) Fifth Usage Mode As a fifth usage mode of the stress-stimulated luminescent sheet of this mode, for example, a mode having a cut portion provided so as to cut the stress-stimulated luminescent sheet in plan view can be mentioned.
  • FIG. 34 is a schematic plan view showing an example of the stress-stimulated luminescent sheet of this embodiment
  • FIG. 35 is a cross-sectional view taken along line B4-B4 of FIG.
  • the cut portion 11 is formed in all the layers of the transparent base material 1 a, the stress-stimulated light emitting layer 3 and the retroreflective layer 2.
  • FIG. 34 and FIG. 35 indicate the same members as those in FIG. 32, and a description thereof will be omitted here.
  • the shape of the cut portion 11 in plan view is a broken line.
  • the stress-stimulated luminescent sheet can be easily cut and separated at the cut portion, and at the time of cutting and separating at the cut portion,
  • the stress-stimulated luminescent layer can be easily made to emit light along the portion where the cut portion is formed.
  • a movie or concert ticket can be cited.
  • a movie or concert ticket can be cited.
  • the notch at the place where the ticket stub is cut and separated, it is possible to confirm the light emission of the stress luminescent layer simultaneously with the cutting and separation of the ticket. And authenticity determination and the like can be easily performed.
  • the layer in which the cut portion is formed may be at least one layer constituting the stress luminescent sheet, and may be formed on all of the transparent substrate, the stress luminescent layer, and the retroreflective layer. It may be formed on a part of the transparent substrate, the stress-stimulated luminescent layer, and the retroreflective layer.
  • the layer in which the cut portion is formed includes all of the transparent substrate, the stress-stimulated luminescent layer, and the retroreflective layer, whereby the stress-stimulated luminescent sheet can be easily cut and separated along the cut portion. Because it can.
  • the layer in which the cut portion is formed is formed on a part of the transparent substrate, the stress-stimulated luminescent layer, and the retroreflective layer
  • the transparent substrate, the stress-stimulated luminescent layer, and the recursive layer Of the reflective layer only the transparent base material, and when the cut portion that cuts the transparent base material is formed so as to overlap both the retroreflective layer and the stress light emitting layer in plan view, The presence of the cut portion can be concealed by the stress-stimulated luminescent layer and the retroreflective layer. Therefore, the stress-stimulated luminescent sheet can be made more excellent in anti-counterfeiting effects and the like.
  • the formation location of the cut portion in plan view that is, the pattern shape of the cut portion, is appropriately set according to the type and application of the stress-stimulated luminescent sheet of this embodiment.
  • the shape of the cut portion in plan view, the cutting depth for each component of the stress light-emitting sheet, the forming method, and the like can be the same as the contents described in the above section “(4) Fourth usage mode”. Therefore, explanation here is omitted.
  • (B) Sixth Usage Mode As a sixth usage mode of the stress-stimulated luminescent sheet of this mode, for example, the intermediate transparent substrate formed between the stress-stimulated luminescent layer and the retroreflective layer, and the retroreflective layer above And a protective layer formed on the surface opposite to the stress-stimulated luminescent layer, and may be used as a card.
  • FIG. 36 is a schematic cross-sectional view showing an example of the stress-stimulated luminescent sheet of this aspect.
  • the stress-stimulated luminescent sheet 10 of this embodiment used as a card includes an intermediate transparent substrate 1 c formed between the stress-stimulated luminescent layer 3 and the retroreflective layer 2, and the retroreflective layer 2.
  • a protective layer 14 formed on the surface of the transparent substrate 1a opposite to the stress luminescent layer 3, and a printing layer 15 formed on the surface of the transparent substrate 1a opposite to the stress luminescent layer 3. It is what you have. Note that the reference numerals in FIG. 36 indicate the same members as those in FIG.
  • the stress-stimulated luminescent sheet 10 includes, as the intermediate transparent substrate 1c, the first intermediate transparent substrate 1c formed on the stress-stimulated luminescent layer 3 side and the second intermediate layer formed on the retroreflective layer 2 side.
  • the intermediate transparent substrate 1c and the intermediate transparent substrate 1c of two layers are included.
  • the stress-stimulated luminescent sheet since the stress-stimulated luminescent sheet has the stress-stimulated luminescent layer and the retroreflective layer, it becomes a card excellent in forgery prevention effect and design.
  • such a stress-stimulated luminescent sheet of this embodiment can be used as a card, and examples thereof include a credit card, a cash card, a point card, and an employee ID card.
  • the constituent material of the intermediate transparent substrate is not particularly limited as long as it can transmit the light emitted from the stress-stimulated luminescent layer, but a material used as a transparent core sheet in a card can be used.
  • a material used as a transparent core sheet in a card can be used.
  • ABS acrylonitrile-butadiene-styrene copolymer resin
  • polypropylene triacetate, etc.
  • a highly transparent resin etc.
  • the constituent material is the above-described resin, for example, a first laminate having an intermediate transparent substrate and a stress-stimulated luminescent layer formed on the intermediate transparent substrate, a transparent substrate, a retroreflective layer, and intermediate transparent
  • the stress-stimulated luminescent sheet can be easily formed by preparing a second laminate in which the base material is laminated in this order, and thermocompression-bonding both laminates.
  • the thickness of the intermediate transparent substrate is within the range of 0.54 mm to 0.65 mm in the case of a single layer, and when the intermediate transparent substrate 1c is used in two layers as shown in FIG. Each thickness can be in the range of 0.27 mm to 0.30 mm.
  • the protective layer is not particularly limited as long as it can protect the retroreflective layer, but in the card, one used as a transparent oversheet can be used. It can be the same as the intermediate transparent substrate.
  • the printing layer may be the same as that generally used for card surface modification.
  • As a constituent material of the printing layer for example, the same material as the concealing layer can be used.
  • the stress-stimulated luminescent sheet can include a functional layer necessary for use as a card.
  • the functional layer include an antenna layer including an antenna, a magnetic tape layer including a magnetic tape, an IC chip layer including an integrated circuit (IC) chip, and the like.
  • the location where the functional layer is formed varies depending on the function of the functional layer. For example, when the functional layer is the magnetic tape layer, the retroreflective layer is opposite to the stress light emitting layer. On the side surface or the like. Further, when the functional layer is the antenna layer or the IC chip layer, the formation location can be between two layers of the intermediate transparent substrate.
  • the stress light-emitting sheet in which the cut portion is formed in the transparent substrate first, a release sheet, a first adhesive layer, a second transparent substrate, a brittle layer and a second adhesive layer, and A transparent substrate is prepared by laminating a transparent substrate in this order, and the transparent substrate is pressed from the transparent substrate side of the laminate by pressing an original plate on which a convex blade is placed at a location where a cut portion is to be formed.
  • the method include forming a cut portion in the substrate and then peeling off the original plate, and then forming a stress-stimulated luminescent layer and a retroreflective layer in this order on the transparent substrate of the laminate.
  • Applications of the stress-stimulated luminescent sheet according to the present embodiment can be used where anti-counterfeiting applications and design properties are required, and examples thereof include cards such as credit cards and cash cards, and package films. Moreover, it shall have an adhesive layer which can adhere
  • FIG. 37 (a) is a schematic plan view showing an example in which the forgery prevention medium is used as a banknote
  • FIG. 37 (b) is a cross-sectional view taken along line B5-B5 of FIG. 37 (a).
  • the stress-stimulated luminescent sheet 10 has a structure in which a transparent base material 1a, a patterned stress-stimulated luminescent layer 3 and a filling layer 4, a retroreflective layer 2, and a heat seal layer as an adhesive layer 6 are laminated in this order. And transferred to the adherend 101 via the adhesive layer 6.
  • FIG. 37 shows an example in which the line-shaped stress light emitting layer 3 is formed in a pattern so as to represent the number “123”, and the forgery prevention medium 100 includes the printed layer 104 representing the number “500”. It is.
  • the transparent substrate side of the stress-stimulated luminescent sheet can be affixed with transparency, for example, a soundproof wall disposed in a water tank, a highway, etc., a smartphone panel , Chemical bottles, glasses, ballpoint pen housings and the like.
  • a material of the said adherend what is necessary is just to have transparency, Glass, an acrylic resin, PET resin etc. can be mentioned.
  • the anti-counterfeit paper as the anti-counterfeit medium is formed by forming the stress light-emitting sheet of this embodiment into a thread shape and inserting the embossed sheet into the paper layer
  • the anti-counterfeit paper is illustrated in FIG. 200 includes a paper layer 201 and a strip-shaped thread base material 202 embedded in the paper layer 201, and the thread base material 202 is provided on one surface of the paper layer 201. Is formed in the plan view, and the thread base material 202 is the stress-stimulated luminescent sheet 10.
  • FIG. 200 includes a paper layer 201 and a strip-shaped thread base material 202 embedded in the paper layer 201, and the thread base material 202 is provided on one surface of the paper layer 201. Is formed in the plan view, and the thread base material 202 is the stress-stimulated luminescent sheet 10.
  • FIG. 38 (a) is a schematic plan view showing an example in which the forgery prevention paper is used as a banknote
  • FIG. 38 (b) is a cross-sectional view taken along line B6-B6 of FIG. 38 (a).
  • the stress-stimulated luminescent sheet 10 as the thread substrate has a transparent substrate 1a, a patterned stress-stimulated luminescent layer 3 and a filling layer, and a retroreflective layer 2, and is included in the stress-stimulated luminescent sheet 10.
  • the formation position of the stress-stimulated luminescent sheet of this aspect in the forgery prevention medium in a plan view can be the same as the content described in the section “A. First Embodiment” above.
  • the stress-stimulated luminescent sheet of this aspect can also be used for the application described in the section “A. First Embodiment” above.
  • the stress-stimulated luminescent sheet according to this aspect includes a transparent substrate, a retroreflective layer formed on one surface of the transparent substrate, containing retroreflective particles and a resin material, and the transparent substrate of the retroreflective layer. And a stress-stimulated luminescent layer containing stress-stimulated luminescent particles and a binder resin, the retroreflective layer is formed in a pattern, and the stress-stimulated luminescent layer is formed of the retroreflective layer. It is formed so as to cover both the formation region and the non-formation region.
  • FIG. 39 is a schematic plan view showing an example of the stress-stimulated luminescent sheet of this embodiment
  • FIG. 40 is a cross-sectional view taken along line C1-C1 of FIG.
  • the stress-stimulated luminescent sheet 10 of this embodiment is formed on a transparent base 1a and one surface of the transparent base 1a, and contains a retroreflective particle and a resin material.
  • a reflective layer 2 and a stress-stimulated luminescent layer 3 formed on a surface of the retroreflective layer 2 opposite to the transparent substrate 1a and containing stress-stimulated luminescent particles and a binder resin.
  • the stress-stimulated luminescent layer 3 is formed so as to cover both the formation region 21 and the non-formation region 22 of the retroreflective layer 2.
  • the description of the stress-stimulated luminescent layer is omitted for ease of explanation.
  • the retroreflective layer is formed in a pattern, and the stress-stimulated luminescent layer is formed so as to cover both the formation region and the non-formation region of the retroreflection layer. Then, the light emission from the stress-stimulated luminescent layer can be observed on both the front side and the back side. Further, in the formation region, out of the emitted light from the stress light emitting layer, the emitted light emitted from the stress light emitting layer to the retroreflective layer side can be efficiently reflected. Light emission having a higher light emission intensity than that observed in the formation region can be observed.
  • FIG. 41 is an explanatory view for explaining the optical path of the emitted light from the stress light emitting layer in the stress light emitting sheet of this aspect
  • FIG. 42 is an explanatory view for explaining the light emission state of the stress light emitting sheet of this aspect. It is. 41 and 42 illustrate the optical path and the light emission state in the stress-stimulated luminescent sheet shown in FIGS. 39 and 40 described above.
  • FIG. 42A shows a light emission state on the front side of the stress light emitting sheet
  • FIG. 42B shows a light emission state on the back side of the stress light emitting sheet. As illustrated in FIGS.
  • the stress-stimulated luminescent sheet has different pattern luminescence on the front side and the back side depending on the pattern shape of the retroreflective layer, even if the stress-stimulated luminescent layer is not formed in a pattern. Pattern emission with different emission intensities is possible. Further, by forming the stress light emitting layer in a pattern and combining the stress light emitting layer pattern and the retroreflective layer pattern, more complicated pattern light emission or the like is possible. Therefore, the stress-stimulated luminescent sheet of this embodiment is excellent in the anti-counterfeit effect and the design.
  • the retroreflective layer is excellent in foil breakability because the retroreflective particles are dispersed in the resin material. For this reason, the said retroreflection layer is easy to cut
  • the stress-stimulated luminescent layer also has excellent foil cutting properties because stress-stimulated luminescent particles are dispersed in the binder resin, and can be easily cut into any shape. For this reason, the stress light emitting layer and the retroreflective layer can be easily cut into arbitrary shapes, and the stress light emitting layer can emit light along the cut portion. For this reason, the stress-stimulated luminescent sheet has excellent anti-counterfeiting properties and design properties.
  • the pattern luminescence differs on the front side and the back side depending on the pattern shape of the retroreflective layer, and the luminescence intensity on the front side. Therefore, it is possible to easily form a stress light emitting sheet excellent in forgery prevention and design.
  • the stress-stimulated luminescent sheet of this embodiment has a transparent substrate, a retroreflective layer, and a stress-stimulated luminescent layer.
  • a transparent substrate a transparent substrate
  • a retroreflective layer a retroreflective layer
  • a stress-stimulated luminescent layer a stress-stimulated luminescent layer
  • the stress-stimulated luminescent layer in this embodiment contains stress-stimulated luminescent particles and a binder resin.
  • the stress-stimulated luminescent layer is formed on the surface of the retroreflective layer opposite to the transparent substrate.
  • the stress-stimulated luminescent layer is formed so as to cover both the formation region and the non-formation region of the retroreflective layer.
  • the stress-stimulated luminescent layer contains stress-stimulated luminescent particles and a binder resin.
  • Stress-stimulated luminescent particles have a property that the particles themselves emit light by strain energy applied from the outside, and a property that changes the luminescence intensity in proportion to the strain energy. Anything is acceptable.
  • the type of stress-stimulated luminescent material constituting the stress-stimulated luminescent particles is not limited to one using only one type, and two or more types may be used. In this embodiment, it is preferable that there are two or more kinds of the stress-stimulated luminescent materials.
  • the stress-stimulated luminescent layer can have regions with different luminescent colors. For example, in the stress-stimulated luminescent layer 3 shown in FIG. 43, the region indicated by x is the first luminescent color region containing the stress-stimulated luminescent particles made of the first stress luminescent material, and the region indicated by y is the first.
  • the stress-stimulated luminescent sheet according to this aspect can be made excellent in anti-counterfeiting effects and the like.
  • the content of the stress-stimulated luminescent particles may be one type, that is, the content of the stress-stimulated luminescent particles may be uniform in the stress-stimulated luminescent layer. It is preferable that a light emitting layer has a site
  • Binder resin is not particularly limited as long as it can stably disperse and fix the stress-stimulated luminescent particles and transmit light emitted from the stress-stimulated luminescent particles.
  • Examples of such a binder resin include those described in the section “(b) Binder resin” in “(1) Constituent material of stress luminescent layer” in “1. Since it can be the same as that of the contents, description thereof is omitted here.
  • the stress-stimulated luminescent layer has stress-stimulated luminescent particles and a binder resin, but may contain other materials as necessary. Such other materials are described in the section “(c) Other components” of “(1) Constituent material of stress luminescent layer” of “1. Stress luminescent layer” of “A. First embodiment” above. Since it can be made the same as the content of description, description here is abbreviate
  • the stress-stimulated luminescent layer may not be formed in a pattern, that is, the stress-stimulated luminescent layer may be formed so as to cover the entire surface of the transparent substrate. It is preferable.
  • the stress light emitting layer By forming the stress light emitting layer in a pattern, the stress light emitting layer can emit light in a pattern in plan view when stress is applied to the stress light emitting sheet. For this reason, it is because the stress-stimulated luminescent layer is formed in a pattern shape, whereby the stress-stimulated luminescent sheet can be made more excellent in anti-counterfeiting effects and the like.
  • the stress light emitting sheet can emit light having a complicated pattern shape with different light emission intensities or the light emitting pattern shape on the back side. This is because it can be made more excellent in anti-counterfeiting effects such as being able to have a shape other than the inverted shape of the above.
  • FIG. 44 is a schematic plan view showing another example of the stress-stimulated luminescent sheet of this embodiment, in which the stress-stimulated luminescent layer 3 is formed in a pattern including two square shapes and two circular shapes, and the retroreflective layer 2 is An example in which the stress light-emitting sheet 10 is formed in a circular shape at the center is shown.
  • 45 is a cross-sectional view taken along line C2-C2 of FIG.
  • FIG. 46 is an explanatory diagram for explaining a light emission state when stress is applied to the stress light emitting sheet shown in FIGS. 44 and 45 to emit light
  • FIG. 46 (a) is a diagram of the surface side of the stress light emitting sheet. The light emission state is shown, and FIG.
  • the stress-stimulated luminescent layer 10 is formed in a pattern so that the stress-stimulated luminescent sheet 10 can include a non-luminescent region 33 on the surface side, and the non-luminescent region 33 on the surface side. Further, it is possible to perform pattern light emission by a combination of light emission regions such as the low light emission intensity region 32, the non-light emission region 33, the high light emission intensity region 31, the low light emission intensity region 32, and the high light emission intensity region 31. For this reason, only the retroreflective layer as shown in FIG.
  • the shape of the light emission pattern on the back side is the reverse of the shape of the light emission pattern on the front side.
  • the stress-stimulated luminescent sheet 10 does not include other layers formed on the same plane as the stress-stimulated luminescent layer 3.
  • the stress-stimulated luminescent sheet 10 has the retroreflective layer filling layer 4a formed on the same plane as the retroreflective layer 2, that is, formed in the non-formation region 22. It is.
  • the shape of the stress-emitting layer 3 in plan view is a pattern shape including both a square shape and a circular shape.
  • the stress-stimulated luminescent layer is formed so as to cover both the formation region and the non-formation region of the retroreflective layer.
  • the formation region is a region where the retroreflective layer is formed, and a plan view shape thereof is a plan view shape of the retroreflective layer.
  • the non-formation region is a region where the retroreflective layer is not formed, and its plan view shape is an inverted shape of the plan view shape of the retroreflective layer. Covering both the formation region and the non-formation region means that the stress-stimulated luminescent layer includes at least a part of the formation region and at least a part of the non-formation region.
  • FIG. 39 and FIG. 40 show examples in which the stress-stimulated luminescent layer 3 includes both the formation region 21 and the non-formation region 22, and FIG. 44 and FIG.
  • the stress light emitting layer 3 shows an example including a part of the formation region 21 and a part of the non-formation region 22.
  • stress-stimulated luminescent layer can be the same as those described in the section “(2) Others” of “1. Stress-stimulated luminescent layer” in “A. First embodiment”. Therefore, explanation here is omitted.
  • Retroreflective layer The retroreflective layer in this aspect is formed on one surface of the transparent substrate.
  • the retroreflective layer contains retroreflective particles and a resin material.
  • the retroreflective layer is formed in a pattern.
  • the retroreflective layer contains retroreflective particles and a resin material.
  • Retroreflective layer of “A. First embodiment”. Since it can be the same as that of the contents, description thereof is omitted here.
  • the thickness of the retroreflective layer is not particularly limited as long as the light emitted from the stress light emitting layer can be retroreflected.
  • the thickness can be in the range of 1 ⁇ m to 500 ⁇ m, for example.
  • the retroreflective layer is formed in a pattern.
  • the plan view shape of the retroreflective layer that is, the plan view shape of the region where the retroreflective layer is formed and the width thereof are appropriately set according to the use and type of the stress-stimulated luminescent sheet of this aspect.
  • the content can be the same as that described in the section “1.
  • the area of the retroreflective layer in plan view and the area of the stress light emitting layer in plan view may be the same, or one of them may be large.
  • the area of the retroreflective layer may be larger than the area of the stress light emitting layer in plan view, and the retroreflective layer may be exposed from the stress light emitting layer.
  • the method for forming the retroreflective layer is not particularly limited as long as the retroreflective particles and the resin material can be contained, and the “A. First Embodiment” is not particularly limited. Since it can be the same as the content described in the section of “(2) Retroreflective layer” in “2. Retroreflective layer”, description thereof is omitted here.
  • the transparent base material in this aspect supports a stress light-emitting layer and a retroreflective layer.
  • Such a transparent base material can be the same as the contents described in the section “3. Transparent base material” of “B. Second embodiment” above, and thus the description thereof is omitted here.
  • the stress-stimulated luminescent sheet of the present embodiment has the transparent substrate, the stress-stimulated luminescent layer, and the retroreflective layer, but may have other configurations as necessary.
  • the stress-stimulated luminescent sheet of this aspect can include a filling layer formed on the same plane as the stress-stimulated luminescent layer when the stress-stimulated luminescent layer is formed in a pattern. This is because the presence of the stress-stimulated luminescent layer formed in a pattern can be concealed, and the stress-stimulated luminescent sheet can be made more excellent in the anti-counterfeiting effect.
  • FIG. 47 is a schematic cross-sectional view showing another example of the stress-stimulated luminescent sheet of this aspect.
  • FIG. 47 shows an example in which the stress light emitting layer 3 is formed in a pattern, and the stress light emitting sheet 10 has a filling layer 4 formed on the same plane as the stress light emitting layer 3. Note that the reference numerals in FIG. 47 indicate the same members as those in FIG. 45, and thus description thereof is omitted here.
  • the filling layer is formed such that both the retroreflective layer 2 and the retroreflective layer filling layer 4a are in contact with the transparent substrate 1a on the same surface of the transparent substrate 1a.
  • the filling layer 4 may be formed on the same surface of the same member together with the stress light emitting layer 3.
  • both the stress-stimulated luminescent layer 3 and the filling layer 4 are on the same surface of the retroreflective layer filling layer 4a formed on the same plane as the retroreflective layer 2 and the retroreflective layer 2.
  • the filling layer 4 is formed on the same surface of the member formed on the same plane together with the stress light emitting layer 3 so as to be in contact with the retroreflective layer 2 and the filling layer 4a for the retroreflective layer. It can be formed.
  • the filling layer is not particularly limited as long as the stress-stimulated luminescent layer can be concealed.
  • the total light transmittance of the filling layer may be the same as that described in the section “1. Stress light emitting layer”, for example.
  • the color of the filling layer is the same color as that of the stress light emitting layer, it is preferably the same as the stress light emitting layer.
  • the formation place of the filling layer in plan view is not particularly limited as long as the stress light emitting layer is not formed, and includes, for example, all the places where the stress light emission layer is not formed. It may include a part of the portion where the stress light emitting layer is not formed. 47 which has already been described is formed so that the stress light emitting layer 3 and the filling layer 4 are in direct contact with each other, and the formation position of the filling layer 4 in plan view is a portion where the stress light emitting layer 3 is not formed. Examples including all are shown.
  • the stress-stimulated luminescent sheet of this aspect can include a filling layer for retroreflective layer formed on the same plane as the retroreflective layer. This is because it becomes easy to form the stress-stimulated luminescent layer with a uniform thickness.
  • the filling layer for the retroreflective layer may be any layer that does not have retroreflectivity, and a transparent resin layer, a colored resin layer, or the like can be used.
  • the filling layer for the retroreflective layer a layer having the same composition as the stress light emitting layer formed on the retroreflective layer or a layer having the same composition as the filling layer formed on the same plane as the stress light emitting layer is used. It may be used.
  • the thickness of the said filling layer for retroreflection layers, the formation location in planar view, and a formation method it can be made to be the same as that of the content as described in the said "(1) filling layer.”
  • the stress-stimulated luminescent sheet of this embodiment can include a hiding layer that is formed on at least one surface side of the stress-stimulated luminescent layer and hides the presence of the stress-stimulated luminescent layer.
  • a concealing layer formed so as to cover the stress light emitting layer it becomes possible to effectively conceal the presence of the stress light emitting layer formed in a pattern, etc. It is because it can be made excellent.
  • FIG. 48 shows the concealment layer 5 in which the stress light emitting sheet 10 is formed on the surface opposite to the retroreflective layer 2 of the stress light emitting layer 3 and the filling layer 4 formed on the same plane as the stress light emitting layer 3. The example which has is shown.
  • FIG. 48 described above shows an example in which the concealing layer 5 is formed only on one surface side of the stress light emitting layer 3 and is in contact with the stress light emitting layer 3.
  • FIG. 48 shows an example in which the formation place of the concealing layer 5 in a plan view includes all the places where the stress light emitting layer 3 is formed.
  • the other configurations described above can include those generally used for stress-stimulated luminescent sheets.
  • Other structure" of said "A. 1st embodiment” can be used, for example.
  • the other configuration is formed so as to be in contact with a hologram layer such as a volume hologram layer in which a volume hologram is recorded and a relief hologram layer in which a relief hologram is recorded, and a relief forming surface of the relief hologram layer.
  • a vapor deposition layer etc. can be included.
  • These other configurations can be the same as those generally used for anti-counterfeiting members such as stress-stimulated luminescent sheets, printed materials for the purpose of imparting design properties, etc. Omitted.
  • Stress light emitting sheet The stress light emitting sheet of this embodiment may be used alone without adhering the stress light emitting sheet to the adherend, but may be used by adhering to the adherend. .
  • the embodiment to be used by being adhered to the adherend is not particularly limited as long as it has an adhesive layer used for adhesion to the adherend.
  • the retroreflective layer of the transparent substrate is used.
  • An embodiment having an adhesive layer formed on the surface opposite to the first surface (first usage mode), a brittle layer formed on the surface opposite to the retroreflective layer of the transparent substrate, and the brittle layer A second transparent substrate formed on the surface of the porous layer opposite to the transparent substrate, and an adhesive layer formed on the surface of the second transparent substrate opposite to the brittle layer; (Embodiment 2), a brittle layer formed on the surface of the transparent substrate opposite to the retroreflective layer, and a first formed on the same plane as the brittle layer
  • seat of this aspect is an aspect which has the contact bonding layer formed on the surface on the opposite side to the retroreflection layer of the said transparent base material.
  • FIG. 49 is a schematic cross-sectional view showing an example of the stress-stimulated luminescent sheet of this aspect.
  • the stress-stimulated luminescent sheet 10 of this embodiment has an adhesive layer 6 formed on the surface of the transparent substrate 1a opposite to the retroreflective layer 2.
  • the reference numerals in FIG. 49 indicate the same members as those in FIG. 39, the description thereof is omitted here.
  • the stress-stimulated luminescent sheet 10 has a release sheet 7 formed on the surface of the adhesive layer 6 opposite to the transparent substrate 1a.
  • the adhesive layer it is possible to easily attach the stress-stimulated luminescent sheet to an adherend that requires anti-counterfeiting effects or design properties.
  • the stress light emitting layer should exhibit anti-counterfeiting effects and design properties by causing the stress light emitting layer to emit light by the stress applied to the stress light emitting layer when the stress light emitting sheet attached to the adherend is peeled off. Can do.
  • the authenticity is determined by applying light to a ticket or a branded product as a transparent adherend and applying light or releasing the stress. The use which performs design, the use which provides designability, etc. can be mentioned.
  • the adherend having transparency means that the light emission from the back side of the stress-stimulated luminescent sheet can be observed when the stress-stimulated luminescent sheet is bonded to the adherend,
  • the entire surface is not limited to the transparent material, and any material may be used as long as it has a transmission part capable of transmitting the light emitted from the stress light-emitting layer at the place where the stress light-emitting sheet is attached.
  • the formation position of the adhesive layer in plan view is not particularly limited as long as the stress light-emitting sheet can be stably attached to the adherend.
  • the said formation location can be the thing including the whole surface of the said transparent base material, the thing containing a part of said transparent base material, etc.
  • the formation location includes a part of the transparent substrate, that is, the adhesive layer is formed in a pattern.
  • the stress-stimulated luminescent sheet of this aspect may have a release sheet formed on the surface of the adhesive layer opposite to the transparent substrate.
  • the release sheet can be the same as that described in the section “(1) First use mode” of “5. Stress light emitting sheet” in “A. First embodiment”. Description of is omitted.
  • a second usage mode of the stress-stimulated luminescent sheet according to the present mode includes a brittle layer formed on the surface of the transparent substrate opposite to the retroreflective layer, and the brittle layer.
  • a second transparent substrate formed on the surface opposite to the transparent substrate; and an adhesive layer formed on the surface of the second transparent substrate opposite to the brittle layer. It is an aspect.
  • FIG. 50 is a schematic cross-sectional view showing an example of the stress-stimulated luminescent sheet of this aspect.
  • the stress-stimulated luminescent sheet 10 of this aspect includes the brittle layer 8 formed on the surface of the transparent base 1 a opposite to the retroreflective layer 2, and the brittle layer 8.
  • the second transparent base material 1ab formed on the surface opposite to the transparent base material 1a and the adhesive formed on the surface opposite to the brittle layer 8 of the second transparent base material 1ab.
  • the layer 6. Note that the reference numerals in FIG. 50 indicate the same members as those in FIG. 49, and thus the description thereof is omitted here.
  • it has the peeling sheet 7 on the surface on the opposite side to the said transparent base material 1a of the said contact bonding layer 6.
  • the stress-stimulated luminescent sheet can be easily interposed between the transparent substrate and the second transparent substrate. Peelable. Moreover, the stress-stimulated luminescent sheet can emit light from the stress-stimulated luminescent layer due to the stress applied to the stress-stimulated luminescent layer when the transparent substrate and the second transparent substrate are separated from each other. For this reason, the stress-stimulated luminescent sheet can be easily separated and peeled between the transparent substrate and the second transparent substrate, and the stress-stimulated luminescent layer can emit light. This is because the prevention effect and the design are excellent.
  • the formation location of the brittle layer in plan view is not particularly limited as long as the stress-stimulated luminescent sheet can be easily peeled between the transparent substrate and the second transparent substrate.
  • the said formation location can be the thing including the whole surface of the said transparent base material, the thing containing a part of said transparent base material, etc.
  • the formation location includes a part of the transparent substrate, that is, the brittle layer is formed in a pattern.
  • the third usage mode of the stress-stimulated luminescent sheet of this mode is a brittle layer formed on the surface of the transparent substrate opposite to the retroreflective layer, and the same plane as the brittle layer.
  • the brittle layer and the second adhesive layer formed on the surface opposite to the first adhesive layer, and the cut portion that cuts the transparent substrate includes the retroreflective layer and the stress.
  • the light emitting layer is formed so as to overlap with the light emitting layer in plan view, and the cut portion is formed so as to surround the first adhesive layer in plan view.
  • the stress-stimulated luminescent sheet 10 of this embodiment includes a brittle layer 8 formed on the surface of the transparent substrate 1a opposite to the retroreflective layer 2, and the brittle layer.
  • the first adhesive layer 6a formed on the same plane as 8 and the second transparent substrate formed on the surface of the brittle layer 8 and the first adhesive layer 6a opposite to the transparent substrate 1a.
  • the transparent substrate 1 a Is formed so as to overlap the retroreflective layer 2 and the stress-stimulated light emitting layer 3 in plan view, and further, the cut portion 11 is formed so as to surround the first adhesive layer 6a in plan view.
  • 51 and 52 indicate the same members as those in FIG. 39, and thus the description thereof is omitted here.
  • the description of the retroreflective layer and the stress light emitting layer is omitted for ease of explanation.
  • it has the peeling sheet 7 on the surface on the opposite side to the transparent base material 1a of the 2nd contact bonding layer 6b.
  • the retroreflective layer and the stress-stimulated luminescent layer are excellent in foil cutting properties, when the transparent substrate is cut and separated, the cut portion is formed in the transparent substrate.
  • the retroreflective layer and the stress light-emitting layer can also be easily cut and separated.
  • seat can be easily isolate
  • the stress-stimulated luminescent layer can easily emit light along the portion where the cut portion is formed.
  • the pattern light emission and the light emission intensity differ on both sides depending on the pattern shape of the retroreflective layer and the stress light-emitting layer. Different pattern emission is possible.
  • notch part is formed so that the said adhesive layer may be enclosed in planar view, and the said contact bonding layer is formed among the stress light emission sheets isolate
  • the stress-stimulated luminescent sheet can be easily separated and peeled into a pattern along the concealed cut-out portion formation location, and can emit light along the cut-out formation portion. And can be excellent in anti-counterfeiting effects and design properties.
  • FIG. 53 is a process diagram for explaining a method of separating the stress-stimulated luminescent sheet of this embodiment adhered to the adherend.
  • the stress-stimulated luminescent sheet 10 is compared with the stress-stimulated luminescent sheet 10 adhered to the surface of the adherend 20.
  • a portion 10b around the cut portion 11 By pulling a portion 10b around the cut portion 11 with a predetermined pulling force p (FIG. 53 (a)), the portion 10a of the stress-stimulated light emitting sheet 10 on which the adhesive layer 6a is formed is bonded onto the adherend 20
  • FIG. 53B shows an example in which the portion 10b around the cut portion of the stress-stimulated luminescent sheet 10 is peeled and separated between the transparent base material 1a and the second transparent base material 1ab. )).
  • the reference numerals in FIG. 53 indicate the same members as those in FIG. 52, and thus description thereof is omitted here.
  • the brittle layer 8 is peeled between the
  • FIG. 51 already described shows an example in which the shape of the cut portion in a plan view is linear.
  • (A) 4th usage aspect As a 4th usage aspect of the stress light-emitting sheet
  • FIG. 54 is a schematic plan view showing an example of the stress-stimulated luminescent sheet of this embodiment
  • FIG. 55 is a cross-sectional view taken along line C4-C4 of FIG.
  • the cut portion is formed in all the layers of the transparent substrate 1a, the retroreflective layer 2, and the stress-stimulated luminescent layer 3.
  • . 54 and 55 indicate the same members as those in FIG. 52, and a description thereof will be omitted here.
  • the shape of the cut portion 11 in plan view is a broken line.
  • the stress-stimulated luminescent sheet can be easily cut and separated at the cut portion, and at the time of cutting and separating at the cut portion,
  • the stress-stimulated luminescent layer can be easily made to emit light along the portion where the cut portion is formed.
  • the stress-stimulated light emitting layer around the notch formation portion can also emit light, and in this case, the pattern light emission and the light emission intensity differ on both sides depending on the pattern shape of the retroreflective layer and the stress light-emitting layer. Different pattern emission is possible.
  • (B) Fifth Usage Mode As a fifth usage mode of the stress-stimulated luminescent sheet of this mode, for example, an intermediate transparent substrate formed between the retroreflective layer and the stress-stimulated luminescent layer, and the stress-stimulated luminescent layer above A transparent protective layer formed on the surface opposite to the retroreflective layer, and used as a card.
  • FIG. 56 is a schematic cross-sectional view showing an example of the stress-stimulated luminescent sheet of this aspect.
  • the stress-stimulated luminescent sheet 10 of this embodiment used as a card includes an intermediate transparent substrate 1 c formed between the retroreflective layer 2 and the stress-stimulated luminescent layer 3, and the stress-stimulated luminescent layer 3.
  • the stress-stimulated luminescent sheet 10 includes, as the intermediate transparent substrate 1c, the first intermediate transparent substrate 1c formed on the stress-stimulated luminescent layer 3 side and the second intermediate layer formed on the retroreflective layer 2 side.
  • the intermediate transparent substrate 1c and the intermediate transparent substrate 1c of two layers are included.
  • the stress-stimulated luminescent sheet since the stress-stimulated luminescent sheet has the stress-stimulated luminescent layer and the retroreflective layer, it becomes a card excellent in forgery prevention effect and design.
  • the stress-stimulated luminescent sheet can include a functional layer necessary for use as a card.
  • the intermediate transparent base material, the transparent protective layer, the printing layer, and the functional layer “5. Stress-stimulated luminescent sheet” in “B. Second Embodiment” above. Since “(5) Other usage modes” can be the same as the contents described in the section “(b) Sixth usage mode”, the description is omitted here.
  • the said functional layer it differs according to the function of the said functional layer, for example, when the said functional layer is the said magnetic tape layer, the said retroreflection layer of the said stress light emitting layer and Can be on the opposite surface or the like.
  • the stress light-emitting sheet in which the cut portion is formed in the transparent substrate first, a release sheet, a first adhesive layer, a second transparent substrate, a brittle layer and a second adhesive layer, and A transparent substrate is prepared by laminating a transparent substrate in this order, and the transparent substrate is pressed from the transparent substrate side of the laminate by pressing an original plate on which a convex blade is placed at a location where a cut portion is to be formed.
  • Examples of a method for producing a stress-stimulated luminescent sheet having an intermediate transparent substrate include a method of laminating a transparent substrate, a retroreflective layer, an intermediate transparent substrate, and a stress-stimulated luminescent layer in this order.
  • the manufacturing method includes the first laminate having the intermediate transparent substrate and the stress-stimulated luminescent layer formed on the intermediate transparent substrate, the transparent substrate, the retroreflective layer, and the intermediate transparent substrate. It is preferable to prepare a second laminated body laminated in order, and heat and pressure-bond both laminated bodies. This is because the laminates can be stably adhered to each other by thermocompression bonding of laminates having the same thickness.
  • the stress-stimulated luminescent sheet is derived from the first laminate and the second laminate as the intermediate transparent substrate 1c as shown in FIG. And having two layers of an intermediate transparent substrate 1c.
  • Applications of the stress-stimulated luminescent sheet of this embodiment can be used for anti-counterfeiting applications and design properties, such as credit cards and cash cards. Moreover, it shall have an adhesive layer which can adhere
  • FIG. 57 (a) is a schematic plan view showing an example in which the forgery prevention medium is used as a bill
  • FIG. 57 (b) is a cross-sectional view taken along line C5-C5 of FIG. 57 (a).
  • the stress-stimulated luminescent sheet 10 includes a heat seal layer as the adhesive layer 6, a transparent substrate 1a, a patterned retroreflective layer 2, a retroreflective layer filling layer 4a, a stress luminescent layer 3, and a concealing layer 5. It has a structure laminated in this order, and is transferred to the adherend 101 through the adhesive layer 6.
  • FIG. 57 shows an example in which the line-shaped retroreflective layer 2 is formed in a pattern so as to represent the number “123” and the anti-counterfeit medium 100 has a printed layer 104 representing the number “500”. It is. Further, in FIG. 57 (a), the description of the stress light emitting layer and the concealing layer is omitted for easy explanation.
  • the adherend can be the same as that described in the section “7. Applications” of the “B. Second embodiment”, and will not be described here.
  • FIG. 58 (a) is a schematic plan view showing an example in which the forgery prevention paper is used as a banknote, and FIG.
  • the stress-stimulated luminescent sheet 10 as a thread substrate has a transparent substrate 1a, a patterned retroreflective layer 2, a retroreflective layer filling layer, a stress luminescent layer 3, and a concealing layer 5,
  • An example in which the stress-stimulated luminescent layer 3 of the sheet 10 is disposed on the side exposed from the opening 203 and the transparent substrate 1a is disposed on the inner side of the paper layer 201 is shown.
  • the formation position of the stress-stimulated luminescent sheet of this aspect in the forgery prevention medium in a plan view can be the same as the content described in the section “A. First Embodiment” above.
  • the stress-stimulated luminescent sheet of this aspect can also be used for the application described in the section “A. First Embodiment” above.
  • the present invention is not limited to the above embodiment.
  • the above-described embodiment is an exemplification, and the present invention has substantially the same configuration as the technical idea described in the claims of the present invention, and any device that exhibits the same function and effect is the present invention. It is included in the technical scope of the invention.
  • Example 1 Printing The substrate material, adhesive layer and release paper (release sheet) are laminated in this order on the substrate side of the tack paper (on the opposite side to the release paper) using a silk screen printing machine with a thick layer of COLOROS retroreflective ink made by Jujo Chemical The film was applied in a circular shape having a diameter of about 20 ⁇ m and a diameter of 2 cm to form a retroreflective layer. After that, on the retroreflective layer, a stress light emitting ink was printed on a star pattern with a thickness of about 10 ⁇ m by a gravure printing machine to form a star light pattern stress light emitting layer.
  • the star pattern on the stress-stimulated luminescent layer was sized to fit within the 2 cm diameter circle. Further, a filling layer was formed by printing a pattern that would be negative when the pattern of the stress-stimulated luminescent layer was positive with KR-V02 half mat (NT) manufactured by Dainichi Seika.
  • the stress-luminescent ink and KR-V02 half mat (NT) have similar colors.
  • the substrate was sheared from the side of the tack paper where the stress light emitting layer was formed, and the blade was inserted to a depth that did not reach the release paper, and processed into a seal.
  • mold was put into the part applicable to the periphery of said circle
  • Example 2 Printing Stress-luminescent ink is printed on the transparent substrate side (on the opposite side of the release paper) of the tack paper in which the transparent substrate, adhesive layer, and release paper (release sheet) are laminated in this order using a gravure printing machine.
  • the film was printed at a thickness of about 10 ⁇ m to form a stress-stimulated luminescent layer having a star pattern.
  • a filling layer was formed by printing a pattern that would be negative when the pattern of the stress-stimulated luminescent layer was positive with KR-V02 half mat (NT) manufactured by Dainichi Seika.
  • the stress-luminescent ink and KR-V02 half mat (NT) have similar colors.
  • a Coloser retroreflective ink made by Jujo Chemical was applied in a circular shape having a thickness of about 20 ⁇ m and a diameter of 2 cm with a silk screen printer, thereby forming a retroreflective layer.
  • the star pattern of the stress-stimulated luminescent layer was sized to fit in the circle with a diameter of 2 cm.
  • the transparent substrate was sheared from the side where the stress light emitting layer of the tack paper was formed, and a blade was inserted to a depth that did not reach the release paper, and processed into a seal shape.
  • mold was put into the part applicable to the periphery of said circle
  • the above-mentioned blade mold is cut into small pieces in such a size that the transparent substrate is cut by the above-mentioned blade mold, and the release paper, the adhesive layer, the transparent substrate, the stress light emitting layer, and the retroreflection are cut.
  • a stress light-emitting sheet in which layers were laminated in this order was produced.
  • Example 3 Printing KOJO Chemical COLOSER retroreflective ink on a transparent substrate side (on the opposite side of the release paper) of the tack paper in which the transparent base material, adhesive layer and release paper (release sheet) are laminated in this order. was applied in a circular shape with a diameter of 3 cm to form a retroreflective layer as shown in FIG. Next, a pattern that becomes negative when the pattern of the retroreflective layer is positive is printed using a transparent resin material (thick overlay medium manufactured by Seiko Advance Co., Ltd.) to form a filling layer for the retroreflective layer. did. Then, on the retroreflective layer, as shown in FIG.
  • the stress-stimulated luminescent ink is obtained with a gravure printing machine, and two square shapes each having a side of 3 cm and two circular shapes having a diameter of 1 cm are used. Were printed at a thickness of about 10 ⁇ m to form a stress light emitting layer of the above pattern. Further, a filling layer was formed by printing a pattern that would be negative when the pattern of the stress-stimulated luminescent layer was positive with KR-V02 half mat (NT) manufactured by Dainichi Seika. The stress-luminescent ink and KR-V02 half mat (NT) have similar colors.
  • a stress luminescent sheet in which a set of images of a stress luminescent layer is cut into small pieces so as not to be cut, and a release paper, an adhesive layer, a transparent substrate, a retroreflective layer, and a stress luminescent layer are laminated in this order. Produced.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Optics & Photonics (AREA)
  • Credit Cards Or The Like (AREA)
  • Illuminated Signs And Luminous Advertising (AREA)

Abstract

La présente invention concerne une feuille mécano-luminescente qui est excellente en termes d'effet de prévention de falsification et d'attractivité de conception. La présente invention concerne une feuille mécano-luminescente, caractérisée par le fait que cette dernière comprend : une base ; une couche de rétroréflexion formée sur une surface de la base et comprenant des particules de rétroréflexion et un matériau résineux ; et une couche mécano-luminescente formée sur la surface de la base qui est sur le côté inverse par rapport à la couche de rétroréflexion et comprenant des particules mécano-luminescentes et une résine liante.
PCT/JP2016/065044 2015-05-21 2016-05-20 Feuille mécano-luminescente WO2016186203A1 (fr)

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JP2015103985 2015-05-21
JP2015103975 2015-05-21
JP2015-103985 2015-05-21
JP2015-103978 2015-05-21
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107354419A (zh) * 2017-06-28 2017-11-17 中国航发北京航空材料研究院 一种石墨烯改性可视耐磨涂层的制备方法
CN107354420A (zh) * 2017-06-28 2017-11-17 中国航发北京航空材料研究院 制备残余应力涂层用石墨烯改性热喷涂粉末的制备方法
JP2021000744A (ja) * 2019-06-20 2021-01-07 大日本印刷株式会社 スレッド状印刷物および偽造防止用紙、並びにロールフィルム印刷物および偽造防止用紙の製造方法

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Publication number Priority date Publication date Assignee Title
CN107354419A (zh) * 2017-06-28 2017-11-17 中国航发北京航空材料研究院 一种石墨烯改性可视耐磨涂层的制备方法
CN107354420A (zh) * 2017-06-28 2017-11-17 中国航发北京航空材料研究院 制备残余应力涂层用石墨烯改性热喷涂粉末的制备方法
CN107354419B (zh) * 2017-06-28 2020-03-17 中国航发北京航空材料研究院 一种石墨烯改性可视耐磨涂层的制备方法
CN107354420B (zh) * 2017-06-28 2020-05-19 中国航发北京航空材料研究院 制备残余应力涂层用石墨烯改性热喷涂粉末的制备方法
JP2021000744A (ja) * 2019-06-20 2021-01-07 大日本印刷株式会社 スレッド状印刷物および偽造防止用紙、並びにロールフィルム印刷物および偽造防止用紙の製造方法
JP7314643B2 (ja) 2019-06-20 2023-07-26 大日本印刷株式会社 スレッド状印刷物および偽造防止用紙、並びにロールフィルム印刷物および偽造防止用紙の製造方法

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