WO2021080367A1 - Forgery and alteration preventing means comprising photonic crystal material complex - Google Patents

Forgery and alteration preventing means comprising photonic crystal material complex Download PDF

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Publication number
WO2021080367A1
WO2021080367A1 PCT/KR2020/014557 KR2020014557W WO2021080367A1 WO 2021080367 A1 WO2021080367 A1 WO 2021080367A1 KR 2020014557 W KR2020014557 W KR 2020014557W WO 2021080367 A1 WO2021080367 A1 WO 2021080367A1
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Prior art keywords
photonic crystal
forgery
present
crystal particles
alteration
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PCT/KR2020/014557
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French (fr)
Korean (ko)
Inventor
조인석
김광호
김석형
조보민
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엔비에스티(주)
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Publication of WO2021080367A1 publication Critical patent/WO2021080367A1/en

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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
    • B42D25/40—Manufacture
    • B42D25/405—Marking
    • B42D25/415—Marking using chemicals
    • 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
    • B42D25/369—Magnetised or magnetisable materials
    • 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
    • B42D25/378—Special inks
    • 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
    • B42D25/40—Manufacture
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/01—Use of inorganic substances as compounding ingredients characterized by their specific function
    • C08K3/013—Fillers, pigments or reinforcing additives
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/34—Silicon-containing compounds
    • C08K3/36—Silica
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D11/00—Inks
    • C09D11/50—Sympathetic, colour changing or similar inks
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/26—Thermosensitive paints
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
    • G02B1/04—Optical elements characterised by the material of which they are made; Optical coatings for optical elements made of organic materials, e.g. plastics
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/09—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on magneto-optical elements, e.g. exhibiting Faraday effect

Definitions

  • the present invention relates to a forgery prevention means comprising a photonic crystal material composite, and more particularly, to a forgery and alteration prevention means comprising a photonic crystal material composite including a photonic crystal material having at least one particle size and a binder whose color changes due to physical changes.
  • a forgery prevention means comprising a photonic crystal material composite
  • a forgery and alteration prevention means comprising a photonic crystal material composite including a photonic crystal material having at least one particle size and a binder whose color changes due to physical changes.
  • Photonic crystal refers to a material or crystal having a color corresponding to a specific wavelength by reflecting only light of a specific wavelength among incident light and passing light of the other wavelength.
  • Representative examples of photonic crystals are the wings of butterflies and beetles. Such as the shell. They do not contain pigments, but because they contain a unique photonic crystal structure, they can give off a distinctive color.
  • the photonic crystals are determined by various external stimuli compared to the existing photonic crystals that exist in nature reflect only light of a specific wavelength. It has been found that the structure (eg, the thickness of the interlayer constituting the photonic crystal) can be arbitrarily changed, and as a result, the wavelength of light reflected not only in the visible region but also in the ultraviolet or infrared region can be freely adjusted.
  • KR Patent Application No. 10-2015-7035963 (name of the invention: thermosensitive forgery display marking) has a plurality of optically variable pigment particles and a plurality of Including a thermally expandable sphere (sphere), wherein the plurality of optically variable pigment particles are thin film interference pigment particles (thin film interference pigment particles), interference coated pigment particles (interference coated pigment particles), cholesteric (cholesteric) )
  • An optically variable ink composition selected from the group consisting of liquid crystal pigment particles and mixtures thereof.
  • the inventors of the present invention have made diligent research efforts to develop a forgery and forgery means that is not only difficult to forge, but also is simple to manufacture.
  • a forgery and forgery means that is not only difficult to forge, but also is simple to manufacture.
  • the present invention was completed by finding that it is possible to more precisely check whether forgery or alteration is performed by changing the temperature by generating stretching, bending, or frictional heat, as well as being very simple to manufacture.
  • an object of the present invention is to provide a means for preventing forgery and alteration including a photonic crystal material complex.
  • the present invention provides a means for preventing forgery and alteration.
  • the inventors of the present invention have made diligent research efforts to develop a forgery and forgery means that is not only difficult to forge, but also is simple to manufacture.
  • a forgery and forgery means that is not only difficult to forge, but also is simple to manufacture.
  • an ink or sheet using a photonic crystalline material complex that exhibits different colors due to physical changes such as pressure, bending, and stretching and/or temperature changes, it is simply pressed by hand.
  • the forgery and alteration can be more precisely checked by changing the temperature by generating, stretching, bending, or frictional heat, as well as the fact that it is very simple to manufacture.
  • the present invention provides a means for preventing forgery and alteration comprising a photonic crystal material composite and including a photonic crystal material composite that is discolored according to a physical change applied to the photonic crystal material composite.
  • photonic crystal material as used herein may refer to any material capable of producing color without a pigment by reflecting or absorbing light.
  • the term “forgery” used in the present specification may refer to an act of creating a new object that does not exist for the purpose of use by an unauthorized person, or an act of making changes to an existing object without authority.
  • the term'computer' as used herein may mean a device that processes various types of data using an electronic circuit.
  • the term'QR code' used in the present specification may mean a code in a two-dimensional (matrix) format that contains various information in various combinations of printed patterns made of various types of circular or square dots.
  • the term'dispersive state' used in the present specification may mean that a plurality of particles are observed in an irregular arrangement at a glance when the particles are observed with the naked eye or optical equipment.
  • the term'array state' used in the present specification may mean that a plurality of particles are observed in a regular arrangement state at a glance when the particles are observed with the naked eye or optical equipment.
  • the term'self-assembly' as used herein may mean a series of phenomena in which a plurality of materials are combined in a certain form without external assistance due to physical characteristics such as the shape of a plurality of materials.
  • magnetic field' refers to applying a magnetic field to a plurality of materials that respond to a magnetic field, and a series of phenomena in which a plurality of materials are combined in a certain form by applying a magnetic field Can appear.
  • the photonic crystal material composite of the present invention may be preferably photonic crystal particles and a binder bonded together with the photonic crystal particles.
  • the photonic crystal material composite is photonic crystal particles and a binder bonded with the photonic crystal particles. This is because when the photonic crystal material complex is a photonic crystal particle and a binder bonded together with the photonic crystal particles, two types of photonic crystal particles and a binder can cause discoloration, so whether forgery or alteration due to discoloration can be duplicated. to be.
  • the photonic crystal particles of the present invention may be preferably selected from the group including SiO 2 , TiO 2 , and Fe 3 O 4.
  • the particle size of the photonic crystal particles of the present invention may preferably be 100 nm to 250 nm.
  • the binder of the present invention preferably has a unique color or may be a material that changes color when the temperature changes, more preferably PU, Acrylic, Siloxane, Hydroxy Alkyne, Ester, and Mesitylene-based binders may be used, and most preferably, PU, Acrylic, or Siloxane-based binders may be used.
  • the binder is a material that changes color due to temperature change. This is because, when the binder is a material that changes color due to temperature change, elements that may cause discoloration can be applied to the binder in addition to the photonic crystal particles, so that it is possible to double-check whether forged or altered due to discoloration.
  • the physical change of the present invention can be preferably selected from the group comprising a change in photonic crystal particle size, a change in distance between photonic crystal particles and a change in temperature, and mixtures thereof.
  • the discoloration due to a change in the distance between the photonic crystal particles of the present invention may be discoloration by narrowing the distance between the photonic crystal particles by a pressing method.
  • the color change due to the change in the distance between the photonic crystal particles changes color by changing the distance between the photonic crystal particles by physical changes such as pressure, bending, and stretching. This is because, when determining whether forgery or tampering is performed by the pressurization method, a separate device is not required to determine whether to forge or falsify.
  • the discoloration due to the change in temperature of the present invention may be discoloration due to a change in the molecular structure of a material whose molecular structure included in the binder is changed depending on the temperature.
  • the photonic crystal composite of the present invention may further include an organic compound capable of detecting a temperature change, that is, a change in temperature, and the organic compound may be uniformly dissolved in a binder.
  • the organic compound is 2-anilino-6-(dibutylamino)-3-methylfluoran (2'-Anilino-6'-(dibutylamino)-3'-methylfluoran) as a developer and bisphenol A as a developer. It may be a mixture of.
  • the photonic crystal particles and the binder of the present invention are preferably arranged in a dispersive state by a self-assembly method or a magnetic field method ( Array state).
  • the photonic crystal particles and the binder become an array state by a self-assembly method or a magnetic field method in a dispersive state. Because, when the photonic crystal particles and the binder are in an array state, the distance between the photonic crystal particles is uniform, and the distance between the particles can be adjusted by physical changes such as pressing, pressing, bending, and stretching. Because there is.
  • the photonic crystal material composite of the present invention comprises the steps of: (a) mixing photonic crystal particles and a binder with an organic solvent and reacting to make the binder bound to the photonic crystal particles; (b) arranging the particles by a magnetic field method or a spin coating method; And (c) curing an organic solvent.
  • the organic solvent of the present invention may be preferably selected from the group of organic solvents including toluene-based solvents, hexane-based solvents, THF-based solvents, and ether-based solvents.
  • the reaction temperature during the reaction of the present invention may be preferably 25 to 200 degrees Celsius.
  • the stirring rpm during the reaction of the present invention may be preferably 60 rpm to 800 rpm.
  • the magnetic field strength when the magnetic field of the present invention is applied, may be preferably 200 G to 5000 G.
  • the rpm during the spin coating of the present invention may be preferably 60 rpm to 2000 rpm.
  • the curing of the present invention may be preferably performed by a UV curing method or a temperature curing method.
  • the curing time during the UV curing of the present invention may preferably be 10 seconds to 30 minutes.
  • the wavelength range of the short wavelength initiator among the UV initiators during the UV curing of the present invention may preferably be 280 nm to 315 nm.
  • the wavelength range of the long wavelength initiator among the UV initiators during the UV curing of the present invention may preferably be 315 nm to 400 nm.
  • the temperature range of the temperature curing method of the present invention may preferably be 25 to 200 degrees Celsius.
  • the curing time of the temperature curing method of the present invention may be preferably 10 seconds to 60 minutes.
  • the present invention (a) by pressing a forgery prevention means prepared using a photonic crystal material composite composed of photonic crystal particles and a binder bonded with the photonic crystal particles to check whether the color is changed. Determining whether or not forgery or alteration has occurred; And (b) changing the temperature of the forgery and alteration prevention means manufactured using a photonic crystal material composite composed of photonic crystal particles and a binder bonded with the photonic crystal particles to check whether or not the color has changed, thereby confirming whether or not forgery or alteration has occurred.
  • the photonic crystal particles are selected from the group including SiO 2 , TiO 2 , and Fe 3 O 4 , and the photonic crystal particles have a particle size of 100 nm to 250 nm, using a forgery prevention means including a photonic crystal material complex. Provide a verification method.
  • the contents related to the forgery and alteration checking method using the forgery and alteration prevention means including the photonic crystal material complex are common to the forgery and alteration prevention means including the photonic crystal material composite, so that detailed descriptions are provided in order to prevent the present specification from becoming excessively complicated. Omit it.
  • the present invention provides a method of manufacturing a means for preventing forgery and alteration comprising a photonic crystal material composite comprising the following steps: (a) SiO 2 , TiO 2 , and Fe 3 O 4 Preparing a mixture by mixing photonic crystal particles selected from the group and a binder bonded together with the photonic crystal particles using a stirrer; And (b) changing the arrangement of the particles from the dispersive state to the array state by using the self-assembly method or the magnetic field method of the mixture of step (a). Step to do.
  • information related to the method for manufacturing the means for preventing forgery and alteration including the photonic crystal material complex is common to the means for preventing forgery and forgery including the photonic crystal material composite described above, and thus detailed descriptions are omitted in order to prevent the present specification from becoming excessively complicated. .
  • the present invention provides a means for preventing forgery and alteration comprising a photonic crystal material composite, and including a photonic crystal material composite that is discolored according to a physical change applied to the photonic crystal material composite.
  • the means for preventing forgery and alteration including the photonic crystal material composite according to the present invention provides advantages in that it is not only difficult to forgery, but also is simple to manufacture.
  • the means for preventing forgery and alteration including the photonic crystal material composite of the present invention provides an advantage of being able to more accurately check whether or not forgery or alteration is performed by simply pressing by hand or by generating frictional heat to change the temperature.
  • FIG. 5 shows a method of bonding photonic crystal particles and a binder.
  • FIG. 6 shows a method of arranging photonic crystal particles bonded with a binder.
  • 1 to 4 show the principle of discoloration according to the size of the photonic crystal material particles, the principle of discoloration according to the distance between the photonic crystal material particles, and the temperature change of the binder among the means for preventing forgery and alteration including the photonic crystal material composite according to an embodiment of the present invention.
  • the principle of discoloration according to the change of pressure and temperature and the principle of discoloration according to the change of pressure and temperature are shown.
  • the photonic crystal material composite has a very uniform particle size for realization of color through rearrangement of the photonic crystal particles or a change in temperature, and the photonic crystal particles are fixed by a binder.
  • the photonic crystal particle size of the present invention exhibits a uniform size in the range of 10 to 1000 nm, preferably 100 to 500 nm, more preferably 100 to 250 nm.
  • the uniformity of the particles may be a more important factor than the particle size, and thus may be out of the range of the particle size.
  • the photonic crystal material composite of the present invention includes photonic crystal particles, the photonic crystal particles may be conductive particles, metal particles, organometallic particles, metal oxide particles, magnetic particles, hydrophobic organic polymer particles, and It may be a particle that exhibits photonic crystal properties in which regularity is imparted to the arrangement and spacing of the particles.
  • the photonic crystal particles of the present invention can be fixed after being dispersed in a medium together with a binder and rearranged by the application of a magnetic field.
  • a medium a polar or non-polar medium may be used.
  • the photonic crystal material composite of the present invention may have its own intrinsic color and may exhibit different colors depending on the size of the photonic crystal particles. In addition, various colors may be implemented by giving a specific color to the medium. In this case, the medium may contain a dye or pigment.
  • the photonic crystal particles and the binder bonding the photonic crystal particles must exhibit an array state. This is because, when the photonic crystal particles and the binder exhibit an arrangement state, the color of the photonic crystal material composite can be changed by uniformly reducing the distance between the photonic crystal particles by a pressing method.
  • the photonic crystal particles and binders which are initially in a dispersive state, may be changed to an array state by a self-assembly method or a magnetic field method.
  • the self-assembly method or magnetic field application method may use various methods known in the art without limitation.
  • means for preventing forgery and alteration including a photonic crystal material composite according to an embodiment of the present invention exhibit different unique colors according to particle size.
  • means for preventing forgery and alteration including a photonic crystal material composite according to an embodiment of the present invention exhibit different colors when the distance between particles is changed.
  • means for preventing forgery and alteration including a photonic crystal material composite according to an embodiment of the present invention exhibit different colors when the temperature of the binder is changed.
  • each color is displayed differently, and when the temperature of the binder is changed, each color is displayed.
  • 5 and 6 illustrate a method of combining photonic crystal particles and a binder in a means for preventing forgery and alteration including a photonic crystal material composite according to an embodiment of the present invention, and a method of arranging the photonic crystal particles combined with the binder.
  • the means for preventing forgery and alteration including a photonic crystal material composite includes (a) mixing photonic crystal particles and a binder with an organic solvent and reacting to bind the binder to the photonic crystal particles. Creating a state; (b) arranging the particles by a magnetic field method or a spin coating method; And (c) a curing step.
  • the organic solvent may be a toluene-based solvent, a hexane-based solvent, a THF-based solvent, or an ether-based solvent.
  • the reaction temperature may be between 25 degrees Celsius and 200 degrees Celsius.
  • the stirring rpm may be in the range of 60 rpm to 800 rpm.
  • the magnetic field strength may be 200 G to 5000 G.
  • the rpm may be 60 rpm to 2000 rpm.
  • the curing may be performed using a variety of curing methods used in the art, but is preferably performed by a UV curing method or a temperature curing method.
  • the curing time may be 10 seconds to 30 minutes.
  • the wavelength range of the short wavelength initiator among the UV initiators may be 280 nm to 315 nm.
  • the wavelength range of the long wavelength initiator among the UV initiators may be 315 nm to 400 nm.
  • the temperature range of the temperature curing method may be from 25 degrees Celsius to 200 degrees Celsius.
  • the curing time of the temperature curing method may be 10 seconds to 60 minutes.

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  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Nonlinear Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Polymers & Plastics (AREA)
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  • Inks, Pencil-Leads, Or Crayons (AREA)

Abstract

The present invention provides a forgery and alteration preventing means comprising a photonic crystal material complex, wherein the photonic crystal material complex is discolored according to a physical change applied to the photonic crystal material complex. The forgery and alteration preventing means including the photonic crystal material complex according to the present invention can advantageously make forgery and alteration difficult and can be simply manufactured. In addition, the forgery and alteration preventing means including the photonic crystal material complex according to the present invention advantageously enables more precise identification of forgery and alteration by changing a temperature thereof by simply pressing same by hand or by generating frictional heat.

Description

광결정물질 복합체를 포함하는 위변조 방지수단Forgery and alteration prevention means including photonic crystal material complex
본 발명은 광결정물질 복합체를 포함하는 위변조 방지수단에 관한 것으로, 보다 상세하게는 하나 이상의 입자 사이즈를 갖는 광결정물질 및 물리적 변화에 의해 색채가 변하는 바인더를 포함하는 광결정물질 복합체를 포함하는 위변조 방지수단에 관한 것이다.The present invention relates to a forgery prevention means comprising a photonic crystal material composite, and more particularly, to a forgery and alteration prevention means comprising a photonic crystal material composite including a photonic crystal material having at least one particle size and a binder whose color changes due to physical changes. About.
고가의 상품이나 내용물의 진정성이 요구되는 상품의 위조 및 변조를 방지하기 위하여 다양한 기술들이 소개된 바 있다. 종래에는 주로 미세 패턴, 점자, 홀로그램, RFID 등을 이용한 기술들이 상품의 위조 및 변조를 방지하기 위하여 사용되어 왔지만, 이러한 종래기술은 일반 사용자가 상품의 위조 및 변조 여부를 감별하기가 쉽지 않다는 한계를 가지고 있거나 위조 및 변조 방지 수단을 제조하는 데에 많은 비용이 소요되는 문제점을 가지고 있다.Various technologies have been introduced to prevent forgery and alteration of expensive products or products requiring authenticity of contents. Conventionally, technologies mainly using fine patterns, braille, holograms, RFID, etc. have been used to prevent counterfeiting and falsification of products, but these prior techniques have limitations in that it is not easy for general users to discriminate whether or not a product is forged or altered. There is a problem that it takes a lot of cost to have or to manufacture a counterfeit and tamper-resistant means.
위와 같은 종래 위조방지 수단의 문제점을 근본적으로 해결하기 위하여 다양한 방법이 제안되어 왔는데, 그 중에서 광결정(photonic crystal)과 같은 컬러 나노 복합체를 이용한 방법이 제안되고 있다.Various methods have been proposed to fundamentally solve the problems of the conventional anti-counterfeiting means, among which a method using a color nanocomposite such as a photonic crystal has been proposed.
광결정이란 입사되는 광 중 특정한 파장의 광만을 반사하고 나머지 파장의 광은 통과시킴으로써 특정한 파장에 해당하는 색을 띠는 성질을 갖는 물질 혹은 결정을 의미하는데, 광결정의 대표적인 예로는 나비의 날개, 딱정벌레의 등껍질 등이 있다. 이들은 색소를 포함하고 있지는 않지만 특유의 광결정 구조를 포함하고 있기 때문에 특유의 색을 낼 수 있다.Photonic crystal refers to a material or crystal having a color corresponding to a specific wavelength by reflecting only light of a specific wavelength among incident light and passing light of the other wavelength. Representative examples of photonic crystals are the wings of butterflies and beetles. Such as the shell. They do not contain pigments, but because they contain a unique photonic crystal structure, they can give off a distinctive color.
최근 광결정에 관한 연구에 따르면, 자연계에 존재하는 기존의 광결정의 경우에 특정 파장의 광만을 반사하던 것에 비하여, 소정의 물질을 포함하여 인공적으로 합성된 광결정의 경우에는 다양한 외부 자극에 의하여 광결정의 결정 구조(예를 들면, 광결정을 구성하는 층간 두께)를 임의로 변화시킬 수 있고 그 결과 가시광선 영역뿐만 아니라 자외선 또는 적외선 영역까지 반사되는 광의 파장을 자유롭게 조절할 수 있는 것으로 밝혀졌다.According to a recent study on photonic crystals, in the case of photonic crystals artificially synthesized including a predetermined material, the photonic crystals are determined by various external stimuli compared to the existing photonic crystals that exist in nature reflect only light of a specific wavelength. It has been found that the structure (eg, the thickness of the interlayer constituting the photonic crystal) can be arbitrarily changed, and as a result, the wavelength of light reflected not only in the visible region but also in the ultraviolet or infrared region can be freely adjusted.
요즘 위조는 제조업체 뿐만 아니라 소비자 및 정부에도 영향을 미치는 전세계적인 문제이다. 실제로 위조는 유효한 납세필 인지(valid tax stamp)가 없는 위조품(밀수된 것, 전용된 것 등)을 추적할 수 없는 암시장의 존재로 인해 담배 및 주류 등에 대한 세금 징수에 영향을 미친다는 점에서 정부의 세입에 영향을 미칠 수 있다.Counterfeiting these days is a worldwide problem affecting not only manufacturers, but consumers and governments as well. In fact, counterfeiting affects the collection of taxes on cigarettes and alcohol due to the existence of a black market where counterfeit goods (smuggled, diverted, etc.) without a valid tax stamp cannot be traced. It can affect your revenue.
다양한 해결방법이 포장재(packaging) 분야에서 또는 아이템이나 상품의 보호재로서 개발되었고, 주로 고가 문서 또는 고가품을 위해 사용되었다. 이러한 해결방법은 포장재 또는 아이템이나 상품에서 발생할 수 있는 임의의 변경 또는 조작의 증거를 포함하는, 위변조의 증거가 되는 구조 또는 무효의 위변조방지 보안 증거 구조의 도입을 포함한다.Various solutions have been developed in the field of packaging or as protective materials for items or goods, and are mainly used for high-value documents or high-value items. Such solutions include the introduction of a structure that is evidence of forgery or an invalid forgery prevention security evidence structure, including evidence of any alteration or manipulation that may occur in the packaging material or item or product.
위변조 방지수단에 대한 특허 및 실용신안 문헌을 살펴보면, KR 특허출원번호 제10-2015-7035963호(발명의 명칭: 감열성 위변조 표시마킹)에서는 복수의 광학 가변성 안료 입자(optically variable pigment particles) 및 복수의 열적으로 팽창가능한 구 (sphere)를 포함하고, 상기 복수의 광학 가변성 안료 입자가 박막 간섭 안료 입자(thin film interference pigment particle), 간섭 피복된 안료 입자(interference coated pigment particle), 콜레스테릭(cholesteric) 액정 안료 입자 및 이들의 혼합물로 이루어진 그룹으로부터 선택되는 광학 가변성 잉크 조성물에 대해 개시하고 있다.Looking at the patent and utility model literature on the forgery and alteration prevention means, KR Patent Application No. 10-2015-7035963 (name of the invention: thermosensitive forgery display marking) has a plurality of optically variable pigment particles and a plurality of Including a thermally expandable sphere (sphere), wherein the plurality of optically variable pigment particles are thin film interference pigment particles (thin film interference pigment particles), interference coated pigment particles (interference coated pigment particles), cholesteric (cholesteric) ) An optically variable ink composition selected from the group consisting of liquid crystal pigment particles and mixtures thereof.
그러나 상술한 위변조 방지 인쇄물의 경우 온도 변화에 따라 위변조 여부를 손쉽게 판별할 수 있는 장점은 있으나, 온도 변화에 따른 패턴 변화만 인지할 경우 인쇄물을 어렵지 않게 복제할 수 있는 문제가 존재한다.However, in the case of the above-described forgery and alteration-preventing printed matter, it is possible to easily determine whether or not forged or altered according to temperature changes, but there is a problem in that the printed matter can be reproduced without difficulty if only the pattern change according to temperature change is recognized.
본 명세서 전체에 걸쳐 다수의 논문 및 특허문헌이 참조되고 그 인용이 표시되어 있다. 인용된 논문 및 특허문헌의 개시 내용은 그 전체로서 본 명세서에 참조로 삽입되어 본 발명이 속하는 기술 분야의 수준 및 본 발명의 내용이 보다 명확하게 설명된다. Throughout this specification, a number of papers and patent documents are referenced and citations are indicated. The disclosure contents of the cited papers and patent documents are incorporated by reference in this specification as a whole, and the level of the technical field to which the present invention belongs and the contents of the present invention are more clearly described.
본 발명의 발명자들은 위변조가 어려운 것은 물론, 제작이 간단한 위변조 수단을 개발하기 위해 예의 연구 노력하였다. 그 결과, 누름(Pressure), 굽힘(Bending), 당김(stretching)등의 물리적 변화 및/또는 온도의 변화에 의해 다른 색상을 나타내는 광결정물질 복합체를 이용하여 잉크 내지는 시트를 제작할 경우 간단하게 손으로 누름, 늘림, 굽힘 또는 마찰열을 발생시켜 온도를 변화시키는 방법으로 위변조 여부를 보다 정밀하게 확인할 수 있는 것은 물론, 제작이 매우 간편하다는 사실을 발견하여 본 발명을 완성하였다.The inventors of the present invention have made diligent research efforts to develop a forgery and forgery means that is not only difficult to forge, but also is simple to manufacture. As a result, when manufacturing an ink or sheet using a photonic crystalline material complex that exhibits different colors due to physical changes such as pressure, bending, and stretching and/or temperature changes, it is simply pressed by hand. The present invention was completed by finding that it is possible to more precisely check whether forgery or alteration is performed by changing the temperature by generating stretching, bending, or frictional heat, as well as being very simple to manufacture.
따라서 본 발명의 목적은 광결정물질 복합체를 포함하는 위변조 방지용 수단을 제공하는데 있다.Accordingly, an object of the present invention is to provide a means for preventing forgery and alteration including a photonic crystal material complex.
본 발명의 다른 목적 및 이점은 하기의 발명의 상세한 설명, 청구범위 및 도면에 의해 보다 명확하게 된다.Other objects and advantages of the present invention will become more apparent by the following detailed description, claims and drawings.
본 발명은 위변조 방지용 수단을 제공한다.The present invention provides a means for preventing forgery and alteration.
본 발명의 발명자들은 위변조가 어려운 것은 물론, 제작이 간단한 위변조 수단을 개발하기 위해 예의 연구 노력하였다. 그 결과, 누름(Pressure), 굽힘(Bending), 당김(stretching)등의 물리적 변화 및/또는 온도의 변화에 의해 다른 색상을 나타내는 광결정물질 복합체를 이용하여 잉크 내지는 시트를 제작할 경우 간단하게 손으로 누름, 늘림, 굽힘 또는 마찰열을 발생시켜 온도를 변화시키는 방법으로 위변조 여부를 보다 정밀하게 확인할 수 있는 것은 물론, 제작이 매우 간편하다는 사실을 확인하였다.The inventors of the present invention have made diligent research efforts to develop a forgery and forgery means that is not only difficult to forge, but also is simple to manufacture. As a result, when manufacturing an ink or sheet using a photonic crystalline material complex that exhibits different colors due to physical changes such as pressure, bending, and stretching and/or temperature changes, it is simply pressed by hand. It has been confirmed that the forgery and alteration can be more precisely checked by changing the temperature by generating, stretching, bending, or frictional heat, as well as the fact that it is very simple to manufacture.
본 발명의 일 양태에 따르면, 본 발명은 광결정물질 복합체를 포함하고, 상기 광결정물질 복합체에 가해지는 물리적 변화에 따라 변색되는 광결정물질 복합체를 포함하는 위변조 방지용 수단을 제공한다.According to an aspect of the present invention, the present invention provides a means for preventing forgery and alteration comprising a photonic crystal material composite and including a photonic crystal material composite that is discolored according to a physical change applied to the photonic crystal material composite.
본 명세서에서 사용하는 용어 '광결정 소재'는 빛을 반사 또는 흡수하여 색소가 없이도 색을 만들어낼 수 있는 일체의 소재를 의미할 수 있다.The term'photonic crystal material' as used herein may refer to any material capable of producing color without a pigment by reflecting or absorbing light.
본 명세서에서 사용하는 용어 '위변조'는 권한 없는 자가 사용할 목적으로 현존하지 아니하는 물건을 새로 만들어 내는 행위 또는, 기존에 존재하는 물건에 권한 없이 변경을 가하는 행위 일체를 의미할 수 있다. The term “forgery” used in the present specification may refer to an act of creating a new object that does not exist for the purpose of use by an unauthorized person, or an act of making changes to an existing object without authority.
본 명세서에서 사용하는 용어 '컴퓨터'는 컴퓨터는 전자회로를 이용해 다양한 종류의 데이터를 처리하는 기기를 의미할 수 있다.The term'computer' as used herein may mean a device that processes various types of data using an electronic circuit.
본 명세서에서 사용하는 용어 '큐알 코드'는 다양한 형태의 원형 또는 사각의 Dot로 이루어진 인쇄된 무늬의 다양한 조합에 다양한 정보를 담고 있는 2차원(매트릭스) 형식의 코드를 의미할 수 있다.The term'QR code' used in the present specification may mean a code in a two-dimensional (matrix) format that contains various information in various combinations of printed patterns made of various types of circular or square dots.
본 명세서에서 사용하는 용어 '흩어진 상태(Dispersive state)'는 입자를 육안 또는 광학장비로 관찰할 경우 복수의 입자가 일견하여 불규칙한 배열 상태로 관찰되는 것을 의미할 수 있다.The term'dispersive state' used in the present specification may mean that a plurality of particles are observed in an irregular arrangement at a glance when the particles are observed with the naked eye or optical equipment.
본 명세서에서 사용하는 용어 '배열상태(Array state)'는 입자를 육안 또는 광학장비로 관찰할 경우 복수의 입자가 일견하여 규칙적인 배열 상태로 관찰되는 것을 의미할 수 있다.The term'array state' used in the present specification may mean that a plurality of particles are observed in a regular arrangement state at a glance when the particles are observed with the naked eye or optical equipment.
본 명세서에서 사용하는 용어 '자기-조립(Self-assembly)'은 복수의 물질의 형상 등 물리적 특징에 기인하여 외부 조력 없이 복수의 물질들이 일정한 형태로 결합하는 일련의 현상을 의미할 수 있다.The term'self-assembly' as used herein may mean a series of phenomena in which a plurality of materials are combined in a certain form without external assistance due to physical characteristics such as the shape of a plurality of materials.
본 명세서에서 사용하는 용어 '자기장 인가(Magnetic field)'는 자기장에 반응하는 복수의 물질에 자기장을 인가하는 것을 의미하는 것으로, 자기장을 인가함으로 인해 복수의 물질들이 일정한 형태로 결합하는 일련의 현상이 나타날 수 있다. The term'magnetic field' as used herein refers to applying a magnetic field to a plurality of materials that respond to a magnetic field, and a series of phenomena in which a plurality of materials are combined in a certain form by applying a magnetic field Can appear.
본 발명의 바람직한 양태에 따르면, 본 발명의 상기 광결정물질 복합체는 바람직하게는 광결정 입자들 및 상기 광결정 입자들과 함께 결합된 바인더일 수 있다.According to a preferred aspect of the present invention, the photonic crystal material composite of the present invention may be preferably photonic crystal particles and a binder bonded together with the photonic crystal particles.
본 발명에서 광결정물질 복합체가 광결정 입자들 및 상기 광결정 입자들과 함께 결합된 바인더인 것은 매우 중요한 구성이다. 왜냐하면, 광결정물질 복합체가 광결정 입자들 및 상기 광결정 입자들과 함께 결합된 바인더일 경우 변색을 발생시킬 수 있는 구성이 광결정 입자 및 바인더 두 종류라 변색에 의한 위조 또는 변조 여부를 중복하여 확인할 수 있기 때문이다.In the present invention, it is very important that the photonic crystal material composite is photonic crystal particles and a binder bonded with the photonic crystal particles. This is because when the photonic crystal material complex is a photonic crystal particle and a binder bonded together with the photonic crystal particles, two types of photonic crystal particles and a binder can cause discoloration, so whether forgery or alteration due to discoloration can be duplicated. to be.
본 발명의 바람직한 양태에 따르면, 본 발명의 상기 광결정 입자는 바람직하게는 SiO2, TiO2, 및 Fe3O4을 포함하는 군에서 선택될 수 있다.According to a preferred embodiment of the present invention, the photonic crystal particles of the present invention may be preferably selected from the group including SiO 2 , TiO 2 , and Fe 3 O 4.
본 발명의 바람직한 양태에 따르면, 본 발명의 상기 광결정 입자들의 입자 사이즈는 바람직하게는 100 nm 내지 250 nm일 수 있다.According to a preferred embodiment of the present invention, the particle size of the photonic crystal particles of the present invention may preferably be 100 nm to 250 nm.
본 발명의 바람직한 양태에 따르면, 본 발명의 상기 바인더는 바람직하게는고유의 색을 갖거나, 온도가 변할 경우 변색되는 물질일 수 있고, 보다 바람직하게는 PU, Acrylic, Siloxane, Hydroxy Alkyne, Ester 및 Mesitylene 계열의 바인더가 이용될 수 있으며, 가장 바람직하게는 PU, Acrylic 또는 Siloxane 계열의 바인더가 이용될 수 있다.According to a preferred embodiment of the present invention, the binder of the present invention preferably has a unique color or may be a material that changes color when the temperature changes, more preferably PU, Acrylic, Siloxane, Hydroxy Alkyne, Ester, and Mesitylene-based binders may be used, and most preferably, PU, Acrylic, or Siloxane-based binders may be used.
본 발명에서 바인더가 온도 변화에 의해 변색되는 물질인 것은 매우 중요한 구성이다. 왜냐하면, 바인더가 온도 변화에 의해 변색되는 물질일 경우 변색을 발생시킬 수 있는 요소를 광결정 입자 이외에 바인더에도 적용하여 변색에 의한 위조 또는 변조 여부를 중복하여 확인할 수 있기 때문이다.In the present invention, it is very important that the binder is a material that changes color due to temperature change. This is because, when the binder is a material that changes color due to temperature change, elements that may cause discoloration can be applied to the binder in addition to the photonic crystal particles, so that it is possible to double-check whether forged or altered due to discoloration.
본 발명의 바람직한 양태에 따르면, 본 발명의 상기 물리적 변화는 바람직하게는 광결정 입자 사이즈의 변화, 광결정 입자 사이의 거리 변화 및 온도의 변화 및 이들의 혼합을 포함하는 군으로부터 선택될 수 있다.According to a preferred aspect of the present invention, the physical change of the present invention can be preferably selected from the group comprising a change in photonic crystal particle size, a change in distance between photonic crystal particles and a change in temperature, and mixtures thereof.
본 발명의 바람직한 양태에 따르면, 본 발명의 상기 광결정 입자 사이의 거리 변화에 의한 변색은 바람직하게는 가압 방식에 의해 상기 광결정 입자 사이의 거리를 좁혀 변색하는 것일 수 있다.According to a preferred embodiment of the present invention, the discoloration due to a change in the distance between the photonic crystal particles of the present invention may be discoloration by narrowing the distance between the photonic crystal particles by a pressing method.
본 발명에서 광결정 입자 사이의 거리 변화에 의한 변색이 누름(Pressure), 굽힘(Bending), 당김(stretching)등의 물리적 변화에 의해 광결정 입자 사이의 거리를 변화시켜 변색하는 것은 매우 중요한 구성이다. 왜냐하면, 가압 방식에 의해 위조 또는 변조 여부를 판단할 경우 위조 또는 변조 여부를 판단하기 위해 별도의 장비가 필요하지 않기 때문이다.In the present invention, it is very important that the color change due to the change in the distance between the photonic crystal particles changes color by changing the distance between the photonic crystal particles by physical changes such as pressure, bending, and stretching. This is because, when determining whether forgery or tampering is performed by the pressurization method, a separate device is not required to determine whether to forge or falsify.
본 발명의 바람직한 양태에 따르면, 본 발명의 상기 온도의 변화에 의한 변색은 바람직하게는 온도에 따라 바인더에 포함된 분자 구조가 변경되는 물질의 분자 구조 변경에 의해 변색되는 것일 수 있다.According to a preferred embodiment of the present invention, the discoloration due to the change in temperature of the present invention may be discoloration due to a change in the molecular structure of a material whose molecular structure included in the binder is changed depending on the temperature.
본 발명의 또 다른 양태에 따르면, 본 발명의 광결정복합체는 감온, 즉 온도의 변화를 감지할 수 있는 유기화합물을 추가로 포함할 수 있고, 상기 유기화합물은 바인더에 균일하게 용해될 수 있다. 이 때, 상기 유기화합물은 발색제인 2-아닐리노-6-(디부틸아미노)-3-메틸플루오란(2'-Anilino-6'-(dibutylamino)-3'-methylfluoran)과 현색제인 비스페놀 A의 혼합물일 수 있다. According to another aspect of the present invention, the photonic crystal composite of the present invention may further include an organic compound capable of detecting a temperature change, that is, a change in temperature, and the organic compound may be uniformly dissolved in a binder. In this case, the organic compound is 2-anilino-6-(dibutylamino)-3-methylfluoran (2'-Anilino-6'-(dibutylamino)-3'-methylfluoran) as a developer and bisphenol A as a developer. It may be a mixture of.
본 발명의 바람직한 형태에 따르면, 본 발명의 상기 광결정 입자 및 상기 바인더는 바람직하게는 흩어진 상태(Dispersive state)에서 자기-조립(Self-assembly) 방식 또는 자기장 인가(Magnetic field) 방식에 의해 배열상태(Array state)가 되는 것일 수 있다.According to a preferred embodiment of the present invention, the photonic crystal particles and the binder of the present invention are preferably arranged in a dispersive state by a self-assembly method or a magnetic field method ( Array state).
본 발명에서 광결정 입자 및 바인더가 흩어진 상태(Dispersive state)에서 자기-조립(Self-assembly) 방식 또는 자기장 인가(Magnetic field) 방식에 의해 배열상태(Array state)가 되는 것은 매우 중요한 구성이다. 왜냐하면, 광결정 입자 및 바인더가 배열상태가 될 경우 광결정 입자 사이의 거리가 균일하여 가압, 누름(Pressure), 굽힘(Bending), 당김(stretching)등의 물리적 변화 방식에 의해 입자 사이의 거리를 조절할 수 있기 때문이다.In the present invention, it is a very important configuration that the photonic crystal particles and the binder become an array state by a self-assembly method or a magnetic field method in a dispersive state. Because, when the photonic crystal particles and the binder are in an array state, the distance between the photonic crystal particles is uniform, and the distance between the particles can be adjusted by physical changes such as pressing, pressing, bending, and stretching. Because there is.
본 발명의 바람직한 양태에 따르면, 본 발명의 상기 광결정물질 복합체는 (a) 광결정 입자 및 바인더를 유기용매와 혼합한 다음 반응시켜 바인더가 광결정 입자에 바인딩된 상태를 만드는 단계; (b) 자기장 인가(Magnetic field) 방식 또는 스핀 코팅 방식(Spin coating Array reaction)에 의해 입자를 배열하는 단계; 및 (c) 유기용매의 경화단계를 포함하여 제조될 수 있다. According to a preferred aspect of the present invention, the photonic crystal material composite of the present invention comprises the steps of: (a) mixing photonic crystal particles and a binder with an organic solvent and reacting to make the binder bound to the photonic crystal particles; (b) arranging the particles by a magnetic field method or a spin coating method; And (c) curing an organic solvent.
본 발명의 바람직한 양태에 따르면, 본 발명의 상기 유기용매는 바람직하게는 toluene 계 용매, hexane 계 용매, THF 계 용매 및 ether 계 용매를 포함하는 유기용매 군으로부터 선택될 수 있다.According to a preferred aspect of the present invention, the organic solvent of the present invention may be preferably selected from the group of organic solvents including toluene-based solvents, hexane-based solvents, THF-based solvents, and ether-based solvents.
본 발명의 바람직한 양태에 따르면, 본 발명의 상기 반응 시 반응 온도는 바람직하게는 섭씨 25도 내지 200도일 수 있다.According to a preferred embodiment of the present invention, the reaction temperature during the reaction of the present invention may be preferably 25 to 200 degrees Celsius.
상기 온도가 섭씨 25도 미만일 경우 반응이 일어나지 않는 문제가 있고, 상기 온도가 200도를 초과할 경우 바인더가 손상될 수 있는 문제가 있다.When the temperature is less than 25 degrees Celsius, there is a problem that the reaction does not occur, and when the temperature exceeds 200 degrees, there is a problem that the binder may be damaged.
본 발명의 바람직한 양태에 따르면, 본 발명의 상기 반응 시 교반 rpm은 바람직하게는 60 rpm 내지 800 rpm일 수 있다.According to a preferred embodiment of the present invention, the stirring rpm during the reaction of the present invention may be preferably 60 rpm to 800 rpm.
상기 교반 rpm이 60 rpm 미만일 경우 반응 시간이 오래 걸리는 문제가 있고, rpm이 800 rpm을 초과할 경우 광결정 입자에 결합된 바인더가 손상될 수 있는 문제가 존재한다.When the stirring rpm is less than 60 rpm, there is a problem that the reaction time takes a long time, and when the rpm exceeds 800 rpm, there is a problem that the binder bonded to the photonic crystal particles may be damaged.
본 발명의 바람직한 양태에 따르면, 본 발명의 상기 자기장 인가 시 자기장 세기는 바람직하게는 200 G 내지 5000 G일 수 있다.According to a preferred embodiment of the present invention, when the magnetic field of the present invention is applied, the magnetic field strength may be preferably 200 G to 5000 G.
자기장 인가 시 인가되는 자기장 세기가 200 G 미만일 경우 입자 배열 상태가 균일하지 않은 문제가 존재하고, 자기장 세기가 5000 G를 초과할 경우 광결정 입자에 결합된 바인더가 손상될 수 있는 문제가 존재한다.When the magnetic field strength applied when the magnetic field is applied is less than 200 G, there is a problem that the particle arrangement is not uniform, and when the magnetic field strength exceeds 5000 G, there is a problem that the binder bonded to the photonic crystal particles may be damaged.
본 발명의 바람직한 양태에 따르면, 본 발명의 상기 스핀 코팅 시 rpm은 바람직하게는 60 rpm 내지 2000 rpm일 수 있다.According to a preferred aspect of the present invention, the rpm during the spin coating of the present invention may be preferably 60 rpm to 2000 rpm.
상기 스핀 코팅 시 회전력이 60 rpm 미만일 경우 입자 배열 상태가 균일하지 않은 문제가 존재하고, 회전력이 2000 rpm을 초과할 경우 입자들의 뭉침 현상이 발생할 수 있는 문제가 있다.When the rotational force is less than 60 rpm during the spin coating, there is a problem in that the particle arrangement is not uniform, and when the rotational force exceeds 2000 rpm, there is a problem that agglomeration of particles may occur.
본 발명의 바람직한 양태에 따르면, 본 발명의 상기 경화는 바람직하게는 UV 경화방식 또는 온도 경화방식에 의해 이루어질 수 있다.According to a preferred embodiment of the present invention, the curing of the present invention may be preferably performed by a UV curing method or a temperature curing method.
본 발명의 바람직한 양태에 따르면, 본 발명의 상기 UV 경화 시 경화 시간은 바람직하게는 10 초 내지 30 분일 수 있다.According to a preferred embodiment of the present invention, the curing time during the UV curing of the present invention may preferably be 10 seconds to 30 minutes.
상기 UV 경화 시 경화 시간이 10 초 미만일 경우 경화 상태가 충분하지 않은 문제가 있고, 경화 시간이 30분을 초과할 경우 바인더가 손상될 수 있는 문제가 존재한다.When the curing time is less than 10 seconds during the UV curing, there is a problem that the curing state is insufficient, and when the curing time exceeds 30 minutes, there is a problem that the binder may be damaged.
본 발명의 바람직한 양태에 따르면, 본 발명의 상기 UV 경화 시 UV 개시제 중 단파장 개시제의 파장 범위는 바람직하게는 280 nm 내지 315 nm일 수 있다.According to a preferred embodiment of the present invention, the wavelength range of the short wavelength initiator among the UV initiators during the UV curing of the present invention may preferably be 280 nm to 315 nm.
본 발명의 바람직한 양태에 따르면, 본 발명의 상기 UV 경화 시 UV 개시제 중 장파장 개시제의 파장 범위는 바람직하게는 315 nm 내지 400 nm일 수 있다.According to a preferred embodiment of the present invention, the wavelength range of the long wavelength initiator among the UV initiators during the UV curing of the present invention may preferably be 315 nm to 400 nm.
본 발명의 바람직한 양태에 따르면, 본 발명의 상기 온도 경화방식의 온도 범위는 바람직하게는 섭씨 25도 내지 200도일 수 있다.According to a preferred aspect of the present invention, the temperature range of the temperature curing method of the present invention may preferably be 25 to 200 degrees Celsius.
상기 온도 경화방식의 온도가 섭씨 25도 미만일 경우 경화가 충분하지 않은 문제가 있고, 온도 경화방식의 온도가 섭씨 200도를 초과할 경우 바인더가 손상될 수 있는 문제가 존재한다.When the temperature of the temperature curing method is less than 25 degrees Celsius, there is a problem that curing is insufficient, and when the temperature of the temperature curing method exceeds 200 degrees Celsius, there is a problem that the binder may be damaged.
본 발명의 바람직한 양태에 따르면, 본 발명의 상기 온도 경화방식의 경화 시간은 바람직하게는 10 초 내지 60 분일 수 있다.According to a preferred embodiment of the present invention, the curing time of the temperature curing method of the present invention may be preferably 10 seconds to 60 minutes.
본 발명의 다른 양태에 따르면, 본 발명은 (a) 광결정 입자들 및 상기 광결정 입자들과 함께 결합된 바인더로 구성된 광결정물질 복합체를 이용하여 제조한 위변조 방지수단을 가압하여 색상의 변화 여부를 확인하여 위변조 여부를 확인하는 단계; 및 (b) 광결정 입자들 및 상기 광결정 입자들과 함께 결합된 바인더로 구성된 광결정물질 복합체를 이용하여 제조한 위변조 방지수단의 온도를 변화시켜 색상의 변화여부를 확인하여 위변조 여부를 확인하는 단계를 포함하고, 상기 광결정 입자는 SiO2, TiO2, 및 Fe3O4을 포함하는 군에서 선택되며, 상기 광결정 입자들의 입자 사이즈는 100 nm 내지 250 nm인 광결정물질 복합체를 포함하는 위변조 방지용 수단을 이용한 위변조 확인방법을 제공한다.According to another aspect of the present invention, the present invention (a) by pressing a forgery prevention means prepared using a photonic crystal material composite composed of photonic crystal particles and a binder bonded with the photonic crystal particles to check whether the color is changed. Determining whether or not forgery or alteration has occurred; And (b) changing the temperature of the forgery and alteration prevention means manufactured using a photonic crystal material composite composed of photonic crystal particles and a binder bonded with the photonic crystal particles to check whether or not the color has changed, thereby confirming whether or not forgery or alteration has occurred. And, the photonic crystal particles are selected from the group including SiO 2 , TiO 2 , and Fe 3 O 4 , and the photonic crystal particles have a particle size of 100 nm to 250 nm, using a forgery prevention means including a photonic crystal material complex. Provide a verification method.
본 발명에서 광결정물질 복합체를 포함하는 위변조 방지용 수단을 이용한 위변조 확인방법과 관련된 내용은 상술한 광결정물질 복합체를 포함하는 위변조 방지용 수단과 공통되므로, 본 명세서가 과도하게 복잡해지는 것을 방지하기 위해 자세한 기재를 생략한다.In the present invention, the contents related to the forgery and alteration checking method using the forgery and alteration prevention means including the photonic crystal material complex are common to the forgery and alteration prevention means including the photonic crystal material composite, so that detailed descriptions are provided in order to prevent the present specification from becoming excessively complicated. Omit it.
본 발명의 또 다른 양태에 따르면, 본 발명은 다음의 단계를 포함하는 광결정물질 복합체를 포함하는 위변조 방지용 수단의 제조방법을 제공한다: (a) SiO2, TiO2, 및 Fe3O4을 포함하는 군에서 선택된 광결정 입자들 및 상기 광결정 입자들과 함께 결합된 바인더를 교반기를 이용하여 혼합하여 혼합물을 제조하는 단계; 및 (b) 상기 단계 (a)의 혼합물을 자기-조립(Self-assembly) 방식 또는 자기장 인가(Magnetic field) 방식에 의해 흩어진 상태(Dispersive state)에서 배열상태(Array state)로 입자들의 배열을 변경하는 단계.According to another aspect of the present invention, the present invention provides a method of manufacturing a means for preventing forgery and alteration comprising a photonic crystal material composite comprising the following steps: (a) SiO 2 , TiO 2 , and Fe 3 O 4 Preparing a mixture by mixing photonic crystal particles selected from the group and a binder bonded together with the photonic crystal particles using a stirrer; And (b) changing the arrangement of the particles from the dispersive state to the array state by using the self-assembly method or the magnetic field method of the mixture of step (a). Step to do.
본 발명에서 광결정물질 복합체를 포함하는 위변조 방지용 수단의 제조방법과 관련된 내용은 상술한 광결정물질 복합체를 포함하는 위변조 방지용 수단과 공통되므로, 본 명세서가 과도하게 복잡해지는 것을 방지하기 위해 자세한 기재를 생략한다.In the present invention, information related to the method for manufacturing the means for preventing forgery and alteration including the photonic crystal material complex is common to the means for preventing forgery and forgery including the photonic crystal material composite described above, and thus detailed descriptions are omitted in order to prevent the present specification from becoming excessively complicated. .
본 발명의 특징 및 이점을 요약하면 다음과 같다: The features and advantages of the present invention are summarized as follows:
(a) 본 발명은 광결정물질 복합체를 포함하고, 상기 광결정물질 복합체에 가해지는 물리적 변화에 따라 변색되는 광결정물질 복합체를 포함하는 위변조 방지용 수단을 제공한다.(a) The present invention provides a means for preventing forgery and alteration comprising a photonic crystal material composite, and including a photonic crystal material composite that is discolored according to a physical change applied to the photonic crystal material composite.
(b) 본 발명의 광결정물질 복합체를 포함하는 위변조 방지용 수단은 위변조가 어려운 것은 물론, 제작이 간단한 장점을 제공한다. (b) The means for preventing forgery and alteration including the photonic crystal material composite according to the present invention provides advantages in that it is not only difficult to forgery, but also is simple to manufacture.
(c) 본 발명의 광결정물질 복합체를 포함하는 위변조 방지용 수단은 간단하게 손으로 누르거나, 마찰열을 발생시켜 온도를 변화시키는 방법으로 위변조 여부를 보다 정밀하게 확인할 수 있는 장점을 제공한다.(c) The means for preventing forgery and alteration including the photonic crystal material composite of the present invention provides an advantage of being able to more accurately check whether or not forgery or alteration is performed by simply pressing by hand or by generating frictional heat to change the temperature.
도 1은 광결정물질 입자 사이즈에 따라 변색되는 원리를 나타낸다.1 shows the principle of discoloration according to the particle size of a photonic crystal material.
도 2는 광결정물질 입자 사이의 거리에 따라 변색되는 원리를 나타낸다.2 shows the principle of discoloration according to the distance between the photonic crystal material particles.
도 3은 바인더의 온도 변화에 따라 변색되는 원리를 나타낸다.3 shows the principle of discoloration according to the temperature change of the binder.
도 4는 압력 및 온도 변화에 따라 변색되는 원리를 나타낸다.4 shows the principle of discoloration according to changes in pressure and temperature.
도 5는 광결정 입자와 바인더를 결합하는 방법을 나타낸다.5 shows a method of bonding photonic crystal particles and a binder.
도 6은 바인더와 결합된 광결정 입자를 배열하는 방법을 나타낸다.6 shows a method of arranging photonic crystal particles bonded with a binder.
본 발명은 다양한 변환을 가할 수 있고 여러 가지 실시예를 가질 수 있는 바, 특정 실시예들을 도면에 예시하고 상세하게 설명하고자 한다. 그러나, 이는 본 발명을 특정한 실시 형태에 대해 한정하려는 것이 아니며, 본 발명의 사상 및 기술 범위에 포함되는 모든 변환, 균등물 내지 대체물을 포함하는 것으로 이해되어야 한다. 본 발명을 설명함에 있어서 관련된 공지 기술에 대한 구체적인 설명이 본 발명의 요지를 흐릴 수 있다고 판단되는 경우 그 상세한 설명을 생략한다.In the present invention, various transformations may be applied and various embodiments may be provided, and specific embodiments will be illustrated in the drawings and described in detail. However, this is not intended to limit the present invention to a specific embodiment, it should be understood to include all conversions, equivalents, and substitutes included in the spirit and scope of the present invention. In describing the present invention, when it is determined that a detailed description of a related known technology may obscure the subject matter of the present invention, a detailed description thereof will be omitted.
이하, 본 발명의 실시예를 첨부한 도면들을 참조하여 상세히 설명하기로 한다.Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
도 1 내지 도 4에는 본 발명의 일 실시예에 따른 광결정물질 복합체를 포함하는 위변조 방지용 수단 중 광결정물질 입자 사이즈에 따라 변색되는 원리, 광결정물질 입자 사이의 거리에 따라 변색되는 원리, 바인더의 온도 변화에 따라 변색되는 원리 및 압력 및 온도 변화에 따라 변색되는 원리가 도시되어 있다. 1 to 4 show the principle of discoloration according to the size of the photonic crystal material particles, the principle of discoloration according to the distance between the photonic crystal material particles, and the temperature change of the binder among the means for preventing forgery and alteration including the photonic crystal material composite according to an embodiment of the present invention. The principle of discoloration according to the change of pressure and temperature and the principle of discoloration according to the change of pressure and temperature are shown.
본 발명에서 상기 광결정물질 복합체는 광결정 입자의 재배열 또는 온도의 변화를 통한 색상 구현을 위해 매우 균일한 입자 사이즈를 가지며 광결정 입자가 바인더에 의해 고정되어 있다.In the present invention, the photonic crystal material composite has a very uniform particle size for realization of color through rearrangement of the photonic crystal particles or a change in temperature, and the photonic crystal particles are fixed by a binder.
또한, 본 발명의 광결정 입자 사이즈가 10 내지 1000nm, 바람직하게는 100 내지 500nm, 더욱 바람직하게는 100 내지 250nm의 범위에서 균일한 사이즈를 나타낸다. 또한, 착색제를 포함하는 경우 입자 사이즈보다는 입자의 균일성이 더 중요한 요인이 될 수 있으므로, 상기 입자 사이즈의 범위를 벗어날 수도 있다.In addition, the photonic crystal particle size of the present invention exhibits a uniform size in the range of 10 to 1000 nm, preferably 100 to 500 nm, more preferably 100 to 250 nm. In addition, when the colorant is included, the uniformity of the particles may be a more important factor than the particle size, and thus may be out of the range of the particle size.
본 발명의 광결정물질 복합체는 광결정 입자를 포함하여 구성되는데, 상기 광결정 입자는 전도성 입자, 금속 입자, 유기금속 입자, 금속산화물 입자, 자성입자, 소수성 유기고분자 입자일 수 있고, 외부 에너지의 인가에 의해 입자의 배열, 간격에 규칙성이 부여되는 광결정 특성을 나타내는 입자일 수 있다. The photonic crystal material composite of the present invention includes photonic crystal particles, the photonic crystal particles may be conductive particles, metal particles, organometallic particles, metal oxide particles, magnetic particles, hydrophobic organic polymer particles, and It may be a particle that exhibits photonic crystal properties in which regularity is imparted to the arrangement and spacing of the particles.
예를 들면, 실리콘(Si), 티타늄(Ti), 바륨(Ba), 스트론튬(Sr), 철(Fe), 니켈(Ni), 코발트(Co), 납(Pb), 알루미늄(Al), 구리(Cu), 은(Ag), 금(Au), 텅스텐(W), 몰리브덴(Mo), 아연(Zn), 지르코늄(Zr) 중 어느 하나 또는 그 이상의 금속 또는 이들의 질화물 또는 산화물로 이루어질 수 있다.For example, silicon (Si), titanium (Ti), barium (Ba), strontium (Sr), iron (Fe), nickel (Ni), cobalt (Co), lead (Pb), aluminum (Al), copper (Cu), silver (Ag), gold (Au), tungsten (W), molybdenum (Mo), zinc (Zn), zirconium (Zr) any one or more metals, or nitrides or oxides thereof. .
본 발명의 광결정 입자는 바인더와 함께 매체에 분산된 상태로 있다가 자기장의 인가에 의해 재배열된 후, 고정될 수 있다. 이러한 매체로는 극성 또는 비극성 매체를 사용할 수 있다. The photonic crystal particles of the present invention can be fixed after being dispersed in a medium together with a binder and rearranged by the application of a magnetic field. As such a medium, a polar or non-polar medium may be used.
예를 들어, 물, 메탄올, 에탄올, 프로판올, 부탄올, 프로필렌카보네이트, 톨루엔, 벤젠, 헥산, 클로로포름, 할로카본오일, 퍼클로로에틸렌, 트리클로로에틸렌, 아이소파라핀 오일의 일종인 isopar-G, isopar-M, isopar-H 중 어느 하나 또는 그 이상을 사용할 수 있다.For example, water, methanol, ethanol, propanol, butanol, propylene carbonate, toluene, benzene, hexane, chloroform, halocarbon oil, perchlorethylene, trichloroethylene, isopar-G, isopar-M, a kind of isoparaffin oil. , isopar-H, one or more of them may be used.
본 발명의 광결정물질 복합체는 자체의 고유색을 가질 수 있고, 광결정 입자의 사이즈에 따라 다른 색상을 나타낼 수도 있으나, 이와 더불어 매체에 특정 색을 부여함으로써 다양한 색상을 구현할 수도 있다. 이 경우, 상기 매체는 염료 또는 안료를 포함할 수 있다.The photonic crystal material composite of the present invention may have its own intrinsic color and may exhibit different colors depending on the size of the photonic crystal particles. In addition, various colors may be implemented by giving a specific color to the medium. In this case, the medium may contain a dye or pigment.
본 발명의 광결정물질 복합체가 광결정 입자 사이의 거리 변화 및 바인더에 가해지는 온도 변화에 의해 각각 색상 변화를 나타내려면, 광결정 입자들 및 광결정 입자들을 결합하고 있는 바인더가 배열상태(Array state)를 나타내야 한다. 왜냐하면, 광결정 입자 및 바인더가 배열상태를 나타낼 경우 가압 방식에 의해 광결정 입자들 사이의 거리를 일률적으로 줄여 광결정물질 복합체의 색상을 변화시킬 수 있기 때문이다.In order for the photonic crystal material composite of the present invention to exhibit a color change due to a change in the distance between photonic crystal particles and a temperature change applied to the binder, the photonic crystal particles and the binder bonding the photonic crystal particles must exhibit an array state. . This is because, when the photonic crystal particles and the binder exhibit an arrangement state, the color of the photonic crystal material composite can be changed by uniformly reducing the distance between the photonic crystal particles by a pressing method.
최초 흩어진 상태(Dispersive state)인 광결정 입자 및 바인더는 자기-조립(Self-assembly) 방식 또는 자기장 인가(Magnetic field) 방식에 의해 배열상태(Array state)로 변경될 수 있다.The photonic crystal particles and binders, which are initially in a dispersive state, may be changed to an array state by a self-assembly method or a magnetic field method.
자기-조립(Self-assembly) 방식 또는 자기장 인가(Magnetic field) 방식은 당업계에 공지된 다양한 방법을 제한 없이 이용할 수 있다.The self-assembly method or magnetic field application method may use various methods known in the art without limitation.
도 1을 참조하면, 본 발명의 일 실시예에 따른 광결정물질 복합체를 포함하는 위변조 방지용 수단은 입자 사이즈에 따라 각각 다른 고유의 색상을 나타낸다.Referring to FIG. 1, means for preventing forgery and alteration including a photonic crystal material composite according to an embodiment of the present invention exhibit different unique colors according to particle size.
도 1을 참조하면, 입자의 사이즈가 250 nm일 경우 주황색을 나타내고, 입자의 사이즈가 180 nm일 경우 초록색을 나타내며, 입자의 사이즈가 130 nm일 경우 짙은 푸른색을 나타내는 것을 확인할 수 있다.Referring to FIG. 1, it can be seen that when the size of the particle is 250 nm, the orange color is displayed, when the size of the particle is 180 nm, the green color is displayed, and when the size of the particle is 130 nm, the dark blue color is displayed.
도 2를 참조하면, 본 발명의 일 실시예에 따른 광결정물질 복합체를 포함하는 위변조 방지용 수단은 입자 사이의 거리가 변경될 경우 각각 다른 색상을 나타낸다.Referring to FIG. 2, means for preventing forgery and alteration including a photonic crystal material composite according to an embodiment of the present invention exhibit different colors when the distance between particles is changed.
도 2를 참조하면, 입자 사이의 거리가 17 nm일 경우 주황색을 나타냈고, 입자 사이의 거리가 11.4 nm일 경우 녹색을 나타냈으며, 입자 사이의 거리가 8 nm일 경우 짙은 파란색을 나타냈다.Referring to FIG. 2, when the distance between particles is 17 nm, orange color is displayed, when the distance between particles is 11.4 nm, green color is displayed, and when the distance between particles is 8 nm, dark blue color is displayed.
도 3을 참조하면, 본 발명의 일 실시예에 따른 광결정물질 복합체를 포함하는 위변조 방지용 수단은 바인더의 온도가 변경될 경우 각각 다른 색상을 나타낸다.Referring to FIG. 3, means for preventing forgery and alteration including a photonic crystal material composite according to an embodiment of the present invention exhibit different colors when the temperature of the binder is changed.
도 3을 참조하면, (A) 바인더는 열을 가할 경우 흰색의 바인더가 검정색으로 변하는 것을 확인할 수 있고, (B) 바인더의 경우 열을 가할 경우 노란색의 바인더가 붉은색으로 변하는 것을 확인할 수 있다.Referring to FIG. 3, it can be seen that (A) a binder turns a white binder into black when heat is applied, and (B) a binder turns a yellow binder into red when heat is applied.
도 4를 참조하면, 본 발명의 일 실시예에 따른 광결정물질 복합체를 포함하는 입자 사이의 거리가 변경될 경우 각각 다른 색상을 나타내는 것은 물론, 바인더의 온도가 변경될 경우 각각 다른 색상을 나타낸다.Referring to FIG. 4, when the distance between particles including the photonic crystal material composite according to an exemplary embodiment of the present invention is changed, each color is displayed differently, and when the temperature of the binder is changed, each color is displayed.
도 5 및 도 6에는 본 발명의 일 실시예에 따른 광결정물질 복합체를 포함하는 위변조 방지용 수단의 광결정 입자와 바인더를 결합하는 방법 및 바인더와 결합된 광결정 입자를 배열하는 방법이 도시되어 있다.5 and 6 illustrate a method of combining photonic crystal particles and a binder in a means for preventing forgery and alteration including a photonic crystal material composite according to an embodiment of the present invention, and a method of arranging the photonic crystal particles combined with the binder.
도 5 및 도 6을 참조하면, 본 발명의 일 실시예에 따른 광결정물질 복합체를 포함하는 위변조 방지용 수단은 (a) 광결정 입자 및 바인더를 유기용매와 혼합한 다음 반응시켜 바인더가 광결정입자에 바인딩된 상태를 만드는 단계; (b) 자기장 인가(Magnetic field) 방식 또는 스핀 코팅 방식(Spin coating Array reaction)에 의해 입자를 배열하는 단계; 및 (c) 경화단계를 포함하여 제조될 수 있다. 5 and 6, the means for preventing forgery and alteration including a photonic crystal material composite according to an embodiment of the present invention includes (a) mixing photonic crystal particles and a binder with an organic solvent and reacting to bind the binder to the photonic crystal particles. Creating a state; (b) arranging the particles by a magnetic field method or a spin coating method; And (c) a curing step.
상기 유기용매는 toluene 계 용매, hexane 계 용매, THF 계 용매 또는 ether 계 용매가 사용될 수 있다.The organic solvent may be a toluene-based solvent, a hexane-based solvent, a THF-based solvent, or an ether-based solvent.
상기 광결정 물질과 유기용매를 결합하는 반응 시 반응 온도는 섭씨 25도 내지 200도일 수 있다.In the reaction of combining the photonic crystal material and the organic solvent, the reaction temperature may be between 25 degrees Celsius and 200 degrees Celsius.
상기 광결정 물질과 유기용매를 결합하는 반응 시 교반 rpm은 60 rpm 내지 800 rpm일 수 있다.In the reaction of combining the photonic crystal material and the organic solvent, the stirring rpm may be in the range of 60 rpm to 800 rpm.
상기 유기용매가 결합된 광결정 물질을 배열하기 위한 자기장 인가 시 자기장 세기는 200 G 내지 5000 G일 수 있다.When a magnetic field for arranging the photonic crystal material to which the organic solvent is bound is applied, the magnetic field strength may be 200 G to 5000 G.
상기 유기용매가 결합된 광결정 물질을 배열하기 위한 스핀 코팅 시 rpm은 60 rpm 내지 2000 rpm일 수 있다.During spin coating for arranging the photonic crystal material to which the organic solvent is bonded, the rpm may be 60 rpm to 2000 rpm.
상기 경화는 당업계에 사용되는 다양한 경화방식을 이용할 수 있으나, UV 경화방식 또는 온도 경화방식에 의해 이루어지는 것이 바람직하다.The curing may be performed using a variety of curing methods used in the art, but is preferably performed by a UV curing method or a temperature curing method.
상기 UV 경화 시 경화 시간은 10 초 내지 30 분일 수 있다.During the UV curing, the curing time may be 10 seconds to 30 minutes.
상기 UV 경화 시 UV 개시제 중 단파장 개시제의 파장 범위는 280 nm 내지 315 nm일 수 있다.During the UV curing, the wavelength range of the short wavelength initiator among the UV initiators may be 280 nm to 315 nm.
상기 UV 경화 시 UV 개시제 중 장파장 개시제의 파장 범위는 315 nm 내지 400 nm일 수 있다.During the UV curing, the wavelength range of the long wavelength initiator among the UV initiators may be 315 nm to 400 nm.
상기 온도 경화방식의 온도 범위는 섭씨 25도 내지 200도일 수 있다.The temperature range of the temperature curing method may be from 25 degrees Celsius to 200 degrees Celsius.
상기 온도 경화방식의 경화 시간은 10 초 내지 60 분일 수 있다.The curing time of the temperature curing method may be 10 seconds to 60 minutes.

Claims (8)

  1. 광결정 입자들 및 상기 광결정 입자들과 함께 결합된 바인더를 포함하는 광결정물질 복합체를 포함하는 위변조 방지용 수단에 있어서,In the forgery prevention means comprising a photonic crystal material composite comprising photonic crystal particles and a binder bonded together with the photonic crystal particles,
    상기 광결정물질 복합체는 상기 광결정물질 복합체에 가해지는 물리적 변화에 따라 변색되는 것이며, The photonic crystal material composite is discolored according to a physical change applied to the photonic crystal material composite,
    상기 바인더는 고유의 색을 갖거나 온도가 변할 경우 변색되는 물질인 것을 특징으로 하는,The binder is characterized in that it is a material that has its own color or changes color when the temperature changes,
    위변조 방지용 수단.Means for preventing forgery and alteration.
  2. 제1항에 있어서, The method of claim 1,
    상기 광결정 입자는 SiO2, TiO2, 및 Fe3O4을 포함하는 군에서 선택된 것을 특징으로 하는, 위변조 방지용 수단.The photonic crystal particles are SiO 2 , TiO 2 , and Fe 3 O 4 , characterized in that selected from the group comprising, forgery and alteration prevention means.
  3. 제2항에 있어서,The method of claim 2,
    상기 광결정 입자들의 입자 사이즈는 100 nm 내지 250 nm인 것을 특징으로 하는, 위변조 방지용 수단.The photonic crystal particles have a particle size of 100 nm to 250 nm.
  4. 제3항에 있어서,The method of claim 3,
    상기 물리적 변화는 광결정 입자 사이즈의 변화, 광결정 입자 사이의 거리 변화 및 온도의 변화 및 이들의 혼합을 포함하는 군으로부터 선택된 것을 특징으로 하는, 위변조 방지용 수단.The physical change is selected from the group comprising a change in the size of the photonic crystal grains, a change in distance between the photonic crystal grains, a change in temperature, and a mixture thereof.
  5. 제4항에 있어서,The method of claim 4,
    상기 광결정 입자 사이의 거리 변화에 의한 변색은 누름, 굽힘 또는 늘림 방식에 의해 상기 광결정 입자 사이의 거리를 좁혀 변색하는 것을 특징으로 하는, 위변조 방지용 수단.The discoloration due to the change in the distance between the photonic crystal particles is characterized in that the discoloration by narrowing the distance between the photonic crystal particles by pressing, bending, or stretching method.
  6. 제5항에 있어서, The method of claim 5,
    상기 온도의 변화에 의한 변색은 온도의 변화에 따라 바인더에 포함된 분자 구조가 바뀌는 물질의 분자 구조 변경에 의해 변색되는 것을 특징으로 하는, 위변조 방지용 수단.The discoloration due to the change in temperature is characterized in that discoloration due to the change in the molecular structure of the material in which the molecular structure contained in the binder changes according to the change in temperature.
  7. 제6항에 있어서,The method of claim 6,
    상기 광결정 입자 및 상기 바인더는 흩어진 상태(Dispersive state)에서 자기-조립(Self-assembly) 방식 또는 자기장 인가(Magnetic field) 방식에 의해 배열상태(Array state)가 되는 것을 특징으로 하는, 위변조 방지용 수단.The photonic crystal particles and the binder are arranged in an array state by a self-assembly method or a magnetic field method in a dispersive state.
  8. (a) 광결정 입자들 및 상기 광결정 입자들과 함께 결합된 바인더로 구성된 광결정물질 복합체를 이용하여 제조한 위변조 방지수단을 가압하여 색상의 변화 여부를 확인하여 위변조 여부를 확인하는 단계; 및(a) pressing a forgery prevention means manufactured using a photonic crystal material composite composed of photonic crystal particles and a binder bonded with the photonic crystal particles to check whether or not the color has changed, thereby confirming whether or not there is forgery; And
    (b) 광결정 입자들 및 상기 광결정 입자들과 함께 결합된 바인더로 구성된 광결정물질 복합체를 이용하여 제조한 위변조 방지수단의 온도를 변화시켜 색상의 변화여부를 확인하여 위변조 여부를 확인하는 단계(b) changing the temperature of the forgery and alteration prevention means manufactured using a photonic crystal material composite composed of photonic crystal particles and a binder bonded with the photonic crystal particles to check whether or not the color has changed to confirm whether or not there is forgery or alteration.
    를 포함하고, Including,
    상기 광결정 입자는 SiO2, TiO2, 및 Fe3O4을 포함하는 군에서 선택되며,The photonic crystal particles are selected from the group containing SiO 2 , TiO 2 , and Fe 3 O 4,
    상기 광결정 입자들의 입자 사이즈는 100 nm 내지 250 nm인The particle size of the photonic crystal particles is 100 nm to 250 nm
    광결정물질 복합체를 포함하는 위변조 방지용 수단을 이용한, 위변조 확인방법.A method for checking forgery and alteration using a means for preventing forgery and alteration comprising a photonic crystal material complex.
PCT/KR2020/014557 2019-10-23 2020-10-23 Forgery and alteration preventing means comprising photonic crystal material complex WO2021080367A1 (en)

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