WO2024106785A1 - Id card manufacturing method and id card comprising hard coating - Google Patents

Id card manufacturing method and id card comprising hard coating Download PDF

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Publication number
WO2024106785A1
WO2024106785A1 PCT/KR2023/016516 KR2023016516W WO2024106785A1 WO 2024106785 A1 WO2024106785 A1 WO 2024106785A1 KR 2023016516 W KR2023016516 W KR 2023016516W WO 2024106785 A1 WO2024106785 A1 WO 2024106785A1
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WO
WIPO (PCT)
Prior art keywords
card
hard coating
thickness
coating film
composite coating
Prior art date
Application number
PCT/KR2023/016516
Other languages
French (fr)
Korean (ko)
Inventor
이세현
김소현
김홍건
최혜준
이지연
채우석
이호상
조동제
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한국조폐공사
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Publication of WO2024106785A1 publication Critical patent/WO2024106785A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B38/0036—Heat treatment
    • B32B38/004—Heat treatment by physically contacting the layers, e.g. by the use of heated platens or rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
    • B32B27/20—Layered products comprising a layer of synthetic resin characterised by the use of special additives using fillers, pigments, thixotroping agents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
    • B32B27/365—Layered products comprising a layer of synthetic resin comprising polyesters comprising polycarbonates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/02—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions
    • B32B3/06—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions for securing layers together; for attaching the product to another member, e.g. to a support, or to another product, e.g. groove/tongue, interlocking
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
    • B32B3/30—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by a layer formed with recesses or projections, e.g. hollows, grooves, protuberances, ribs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/06—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the heating method
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/08—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the cooling method
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B38/00—Ancillary operations in connection with laminating processes
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
    • G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2250/00—Layers arrangement
    • B32B2250/03—3 layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2250/00—Layers arrangement
    • B32B2250/04—4 layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2250/00—Layers arrangement
    • B32B2250/05—5 or more layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2250/00—Layers arrangement
    • B32B2250/24—All layers being polymeric
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/536—Hardness
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/538—Roughness
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2309/00—Parameters for the laminating or treatment process; Apparatus details
    • B32B2309/02—Temperature
    • B32B2309/022—Temperature vs pressure profiles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2309/00—Parameters for the laminating or treatment process; Apparatus details
    • B32B2309/08—Dimensions, e.g. volume
    • B32B2309/10—Dimensions, e.g. volume linear, e.g. length, distance, width
    • B32B2309/105—Thickness
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2425/00—Cards, e.g. identity cards, credit cards

Definitions

  • the present invention relates to an ID card manufacturing method and an ID card including a hard coating.
  • ID cards such as resident registration cards, driver's licenses, certificates, or electronic passports are being replaced by ID cards or electronic passports with identification elements as personal information security and user ID identification become important.
  • ID cards are manufactured from films/sheets made from resins with excellent transparency such as polycarbonate, poly(meth)acrylate, polyvinyl chloride, or polypropylene, and polycarbonate films/sheets with excellent flexibility are widely used.
  • polycarbonate has low chemical resistance and scratch resistance
  • ID cards made from polycarbonate film/sheet are not only very vulnerable to organic solvents such as alcohol, but also have the problem of generating a large amount of scratches on the surface when used for a long time. have
  • a protective film is attached to the polycarbonate film/sheet, or a curable resin is used.
  • An ID card with a protective layer was manufactured, including the process of coating and curing the composition.
  • the method of forming a protective layer on an ID card using the above method has the disadvantage of having very poor fairness because the protective layer must be formed using uncoated polycarbonate films/sheets one by one.
  • the ID card manufactured by the method of the cited invention has a very thick protective layer of 10 to 100 ⁇ m, so it is an automated process due to position recognition problems in processes such as fitting or cutting using a laser. was accompanied by many restrictions.
  • Recent ID card manufacturing methods have attempted to solve the limitations of the automated process by thinning the thickness of the protective layer, but as the protective layer thickness of the ID card becomes thinner, scratch problems occur during the ID card manufacturing process, and hard coating This branch could not have surface properties.
  • the protective layer in terms of automated processability of ID cards, it is preferable to manufacture the protective layer with a thin thickness, but as the thickness of the protective layer decreases, the scratch resistance and chemical resistance of the manufactured ID card decreases. It was not possible to resolve the complementary relationship between the benefits that could be included.
  • the purpose of the present invention is to solve the complementary relationship between fairness according to the thickness of the protective layer of a conventional ID card and the functional effect of the protective layer, a method of manufacturing an ID card with remarkable fairness, and an ID card with excellent scratch resistance and chemical resistance.
  • the card is provided.
  • the purpose of the present invention is to provide a method of manufacturing ID cards with greater fairness by solving the fairness problems of ID cards caused by curling and static electricity.
  • the ID card manufacturing method of the present invention includes the steps of coating and curing a hard coating composition on a polycarbonate film to produce a composite coating film including a hard coating with a thickness of 1 to 5 ⁇ m, a laminate, and the composite coating film. It includes the step of heat compression.
  • the step of manufacturing the composite coating film may involve impregnating the valleys of the polycarbonate film with a hard coating composition to form a hard coating.
  • the composite coating film may satisfy Equation 1 below.
  • T H is the thickness of the composite coating film
  • T 0 is the polycarbonate film thickness
  • the polycarbonate film may have an average roughness of 1 to 15 ⁇ m as measured by ISO 4287.
  • the polycarbonate film may have an average roughness of 1 to 15 ⁇ m as measured by ISO 4287.
  • the average distance between the four edges on the flat surface may be 6 mm or less.
  • the composite coating film may have a glossiness of 10 to 30% as measured by ISO 2813.
  • the hard coating composition may contain 0.1 to 0.3% by weight of porous particles.
  • the hard coating composition may include a base material, a crosslinking agent, and an initiator.
  • the laminate may be a laminate of 1 to 10 thermoplastic films.
  • the heat compression step may sequentially include a heat compression process and a cold compression process.
  • Heat compression Compression at a temperature of 150 to 250 ° C. and a pressure of 5 to 50 bar
  • the ID card manufacturing method may further include a process of engraving by irradiating a laser.
  • the ID card of the present invention includes a description and the above description; It includes a 1 to 5 ⁇ m thick hard coating on one or both sides.
  • the hard coating may have a thickness of 2 to 3 ⁇ m.
  • the ID card may have a yellowing property of 5% or less as measured by ASTM E313.
  • the ID card may have a surface pencil hardness of HB or higher as measured by ISO 15184.
  • the ID card manufacturing method of the present invention can have remarkable processability for continuously manufacturing a large amount of ID cards by using a composite coating film containing a hard coating with a thickness of 1 to 5 ⁇ m.
  • the composite coating film of the present invention includes a hard coating impregnated into the micropores on the polycarbonate film, so even if the hard coating thickness is in the above range, the ID card manufactured including this has excellent functional effects obtained by including the hard coating. It can be maintained.
  • the ID card manufacturing method of the present invention can enable mass production of ID cards as the distance (curl) measured by the measurement method defined in the present invention can be 6 mm or less, and the manufactured ID cards have remarkable weather resistance. You can have it.
  • the ID card manufacturing method of the present invention solves the problem of low fairness caused by forming a hard coating in each of the conventional ID card manufacturing methods, and low recognition element recognition and low dimensions due to the thick protective layer of the conventional ID card.
  • the manufactured ID cards can have excellent scratch resistance and chemical resistance.
  • units used without special mention in this specification are based on weight, and as an example, the unit of % or ratio means weight % or weight ratio, and weight % refers to the amount of any one component of the entire composition unless otherwise defined. It refers to the weight percent occupied in the composition.
  • the numerical range used in this specification includes the lower limit and upper limit and all values within the range, increments logically derived from the shape and width of the defined range, all double-defined values, and the upper limit of the numerical range defined in different forms. and all possible combinations of the lower bounds. Unless otherwise specified in the specification of the present invention, values outside the numerical range that may occur due to experimental error or rounding of values are also included in the defined numerical range.
  • the term 'thickness of hard coating' in this specification may be the hard coating thickness measured based on the center line average of the average roughness of the polycarbonate film measured by ISO 4287.
  • the conventional ID card manufacturing method has many limitations in the automated process due to the thick protective layer. To solve this, an attempt was made to have an excellent automated process by making the protective layer thinner, but the scratch resistance and chemical resistance of the manufactured ID card decreased.
  • the inventors of the present invention have developed an ID card that has remarkable fairness including a composite coating film and can have the surface characteristics of the manufactured ID card. A manufacturing method was discovered and the present invention was completed.
  • the ID card manufacturing method of the present invention includes the steps of coating and curing a hard coating composition on a polycarbonate film to produce a composite coating film including a hard coating with a thickness of 1 to 5 ⁇ m, a laminate, and the composite coating film. It may include the step of heat compression.
  • the hard coating may have a thickness of 2 to 3 ⁇ m.
  • a composite coating film containing a hard coating having the above thickness may not cause curl, and may have excellent position recognition in processes such as feeding and cutting in an ID card manufacturing method including this.
  • the ID card manufacturing method may further include a process of engraving by irradiating a laser.
  • the engraving process may be engraving the manufactured ID card after the thermal compression step by irradiating a laser, and by having a hard coating thickness of 5 ⁇ m or less, the imprint defect rate can be significantly reduced.
  • the step of manufacturing the composite coating film may involve impregnating and coating the valleys of the polycarbonate film with a hard coating composition.
  • the valleys of the polycarbonate film may mean a surface roughness lower than the surface center line of the polycarbonate film.
  • the composite coating film is coated by impregnating the surface valleys of the polycarbonate film with a hard coating composition, so even when the hard coating is formed to a thickness of 1 to 5 ⁇ m, not only is there little curling, but the hard coating has excellent adhesion, so that it can last for a long time. The hard coating can be maintained.
  • the composite coating film may satisfy Equation 1 below.
  • T H is the thickness of the composite coating film
  • T 0 is the thickness of the first polycarbonate film
  • the composite coating film may satisfy T H /T 0 of 1.10 or less in Equation 1, and more specifically, 1.05 or less.
  • a composite coating film that satisfies Equation 1 may mean that the change in thickness of the composite coating film produced by impregnating the valleys of a polycarbonate film with a hard coating composition, coating the film, and curing the film may result in a small change in thickness.
  • the composite coating film coated by impregnating the hard coating has a very thin hard coating, which not only allows for remarkable fairness in the ID card manufacturing method, but also allows the manufactured ID card to have scratch resistance and resistance as the thickness of the hard coating decreases. It can prevent chemical properties from deteriorating.
  • the composite coating film does not have a large thickness change rate even if it includes a hard coating, the manufactured ID card can have remarkable dimensional stability.
  • the hard coating composition may have a thickness coated on a polycarbonate film of 1 to 20 ⁇ m, specifically 1 to 15 ⁇ m, but the thickness of the hard coating formed by curing the hard coating composition This is not limited as long as it is 1 to 5 ⁇ m.
  • the process of coating the hard coating composition on the polycarbonate film is not limited as long as the hard coating composition is coated, but can be manufactured by applying and curing using a die coater, micro gravure, spin coating, etc. there is.
  • the polycarbonate film of the composite coating film may have an average roughness measured by ISO 4287 of 1 to 15 ⁇ m, specifically 1 to 10 ⁇ m, and more specifically 1 to 5 ⁇ m.
  • a polycarbonate film having an average roughness in the above range has excellent adhesion even when the hard coating is formed to a thickness of 1 to 5 ⁇ m, suppressing the peeling phenomenon of the hard coating, and providing excellent long-term scratch resistance and durability.
  • the hard coating composition may include a base material, a crosslinking agent, and an initiator.
  • the base material may be an acrylic base base, a urethane-acrylic base base, or a mixture thereof, but is not limited thereto, and is not limited as long as it contains a crosslinkable multifunctional group.
  • the acrylic base material includes, but is not limited to, poly(ethylene glycol) diacrylate (PEGDA), 2-Hydroxyethyl methacrylate (HEMA), and bisphenol A glycidyl methacrylate.
  • PEGDA poly(ethylene glycol) diacrylate
  • HEMA 2-Hydroxyethyl methacrylate
  • bisphenol A glycidyl methacrylate bisphenol A glycidyl methacrylate.
  • Bis-GMA Bisphenol A glycidyl methacrylate
  • the bifunctional urethane-acrylic base may have superior flexibility than the acrylic base, but this is not limited.
  • the crosslinking agent may preferably include an acrylic monomer containing three or more functional groups in terms of rapid curing of the hard coating composition containing the crosslinking agent, unless it impairs the physical properties of the ID card being manufactured. , it does not necessarily limit this.
  • the crosslinking agent may be an acrylic monomer containing 3 to 16 functional groups. As the functional group increases, the curing speed decreases and the curing conditions (heat or light) decrease, which may be preferred, but is not limited thereto.
  • the thermal initiator may include one or two or more selected from azo-based initiators, peroxyester compounds, peroxy dicarbonate-based compounds, acyl peroxides, ketone peroxides, peroxy ketals, and dialkyl peroxides.
  • azo-based initiators peroxyester compounds, peroxy dicarbonate-based compounds, acyl peroxides, ketone peroxides, peroxy ketals, and dialkyl peroxides.
  • peroxyester compounds peroxy dicarbonate-based compounds
  • acyl peroxides ketone peroxides
  • peroxy ketals peroxy ketals
  • dialkyl peroxides dialkyl peroxides
  • the photoinitiator is, for example, 2-hydroxy-2-methyl-1-phenylpropane-1-phenone, 1-hydroxycyclohexylphenylketone, benzophenone, 1-(4-isopropylphenyl) 2-hydroxy 2-methyl 1-one, 1-[4-(2-hydroxyethoxy)phenyl]-2-hydroxy-2-methyl propane 1-one, ⁇ , ⁇ -diethoxyacetophenone, 2,2- It may contain one or more than one selected from diethoxy 1-phenyl ethanone and bis(2,4,6-trimethyl benzoyl)-phenylphosphine oxide, but can be cured at an ultraviolet light intensity of 600 to 800 mJ/cm2. This does not limit it.
  • the hard coating composition may further include an organic solvent.
  • a hard coating composition further containing the organic solvent may be preferred because it provides a viscosity that is good for workability and can be applied or coated with a uniform thickness on the polycarbonate film.
  • the organic solvent may be different depending on the photo-curable hard coating composition or the heat-curable hard coating composition.
  • organic solvents include, for example, methyl (meth)acrylate, ethyl (meth)acrylate, butyl (meth)acrylate, tetrahydrofurfuryl (meth)acrylate, and isopropyl acrylate.
  • the organic solvent may be, for example, toluene, terahydrofuran, acetone, dichloromethane, and ethyl acetic acid.
  • the hard coating composition may be a commercially available one, and as an example, it may be SDHC-100F from SMS Co., Ltd., KUV-3000 or KUT-1000(CU)TN from KCC Co., Ltd., but is not limited thereto. .
  • the hard coating composition may contain 0.1 to 0.3% by weight of porous particles.
  • the porous particles may be one or two or more selected from silica fume, CNT, graphite, and alumina, and the hard coating composition further containing the porous particles has a more matte surface after curing the hard coating composition.
  • the hard coating composition further containing the porous particles has a more matte surface after curing the hard coating composition. can be implemented, preventing surface contamination by fingerprints or contaminants.
  • the hard coating composition may further include one or more additives selected from UV stabilizers, heat stabilizers, antioxidants, UV absorbers, surfactants, lubricants, and anti-fouling agents.
  • a hard coating composition further containing the above additive can suppress the deterioration of physical properties due to high temperature in the ID card manufacturing method and can improve the deterioration of the physical properties of the manufactured ID card against heat and ultraviolet rays, but limiting this is not possible. no.
  • the polycarbonate film in the step of manufacturing the composite coating film, may have a thickness of 30 to 200 ⁇ m, preferably 50 to 150 ⁇ m.
  • a composite coating film manufactured including polycarbonate having a thickness in the above range may be preferred in the ID card manufacturing method because it can have excellent position recognition, but this is limited unless it impairs the physical properties of the composite coating film being manufactured. It's not like that.
  • the average value (curl) of the distance between the four edges on the flat surface may be 6 mm or less, specifically 5 mm. Hereinafter, more specifically, it may be 0.1 to 3 mm.
  • the composite coating film is coated with a very thin hard coating of 1 to 5 ⁇ m, so that it has the above curl range, and the ID card manufacturing method including this can be applied to more significant mass production.
  • the composite coating film may have a glossiness of 10 to 30%, specifically 20 to 30%, as measured by ISO 2813.
  • a composite coating film with a gloss level in the above range is highly compatible with devices that recognize and inspect a specific position using optical equipment in the ID card manufacturing method, so not only can it have excellent fairness, but the manufactured ID card can also be made with holograms, etc.
  • the recognition of security elements can be very noticeable.
  • the laminate may be a laminate of 1 to 10 thermoplastic films.
  • the laminate may be formed into a substrate by thermocompression, and the thickness of the substrate can be more easily adjusted by adjusting the number of laminated thermoplastic films.
  • the laminate may be a laminate of 3 to 10 thermoplastic films, and more specifically, it may be a laminate of 5 to 10 thermoplastic films, but this is limited unless it impairs the physical properties of the ID card being manufactured. That is not the case.
  • thermoplastic films are laminated in the above range can shorten the process time for the heat compression step and is preferred because the manufactured ID card can have excellent mechanical properties such as impact resistance, elastic modulus, tensile strength, and elongation. You can.
  • the thermoplastic film of the laminate is not excluded as long as it can be heat-compressed, but examples include polycarbonate, polypropylene, polyvinylchloride, and acrylonitrile-butadiene.
  • -It may be any film selected from styrene (ABS, Acrylonitrile-Butadiene-Styrene).
  • ABS Acrylonitrile-Butadiene-Styrene
  • the thickness of the thermoplastic film may be 30 to 200 ⁇ m, specifically 30 to 150 ⁇ m, and more specifically 30 to 100 ⁇ m.
  • a laminate made of thermoplastic films having a thickness within the above range may be preferred because it may have excellent processability in the heat compression step, but this is not limited as long as it does not impair the physical properties of the ID card being manufactured.
  • the step of thermal compression may involve placing a composite coating film on one or both sides of the laminate and thermally compressing it.
  • the ID card manufactured by placing the composite coating film on the laminate using the above method can be a base material by lamination of the thermoplastic film of the laminate and the polycarbonate of the composite coating film by heat compression, and a hard coating on one or both sides of the base material.
  • the heat compression step may sequentially include a heat compression process and a cold compression process.
  • the heat compression may be performed at a temperature of 150 to 250°C and a pressure of 5 to 50 bar, preferably at 170 to 230°C, more preferably at 170 to 210°C, and within the above range.
  • Temperature-pressed ID cards may be preferred because they may not compromise the optical, mechanical, and thermal properties of the polycarbonate film.
  • the pressure for the heat compression may be 5 to 40 bar, preferably 5 to 30 bar, and ID cards heat compression at a pressure in the above range may be preferred because they can maintain the crystallinity of the polycarbonate contained therein.
  • the cold pressing is a process of pressing at a temperature of 5 to 30 ° C. and a pressure of 30 to 100 bar. Specifically, the cold pressing is performed at a temperature of 5 to 30 ° C. and a pressure of 50 to 100 bar, preferably 70 to 100 bar, It can prevent the hard coating of manufactured ID cards from separating.
  • the ID card of the present invention includes a substrate and a hard coating with a thickness of 1 to 5 ⁇ m on one or both sides of the substrate.
  • the hard coating may have a thickness of 2 to 3 ⁇ m, specifically 2.5 to 3 ⁇ m.
  • An ID card containing a hard coating in the above range can have excellent ID card manufacturing processability as described above, and has excellent adhesion even if the hard coating is impregnated and coated and has a thickness in the above range, and has excellent long-term scratch resistance and Can have chemical resistance. Additionally, an ID card containing a hard coating having a thickness within the above range may be preferred because it can prevent the hard coating from separating (curling).
  • the substrate may have a thickness of 300 to 2,000 ⁇ m, specifically 300 to 1,500 ⁇ m.
  • the thickness of the substrate can be adjusted according to the number and thickness of thermoplastic films laminated in the ID card manufacturing method and the thickness of the composite coating film, and an ID card containing a substrate having a thickness within the above range has excellent mechanical properties. may be preferred, but is not limited to this.
  • the ID card may have a yellowing property of 5% or less, preferably 3% or less, and more preferably 2% or less, as measured by ASTM E313.
  • the lower limit is not limited, but may be 0.5% or more.
  • ID cards that achieve yellowing in the above range can solve the weather resistance and chemical resistance problems of polycarbonate, so that optical properties do not deteriorate even when exposed to ultraviolet rays, humidity, and organic solvents for a long time.
  • the ID card may have a surface pencil hardness measured by ISO 15184 of HB or higher, preferably H or higher, and more preferably 2H or higher.
  • the upper limit is not limited, but may be 4H or lower and 3H or lower.
  • the ID card with pencil hardness in the above range may include a hard coating with a thickness of 1 to 5 ⁇ m, but the hard coating is impregnated and coated, so that it includes a hard coating with a thickness of 10 to 50 ⁇ m. It can have the same, but even better, surface hardness and scratch resistance than conventional ID cards.
  • the ID card may have 10 or less scratches, specifically, 7 or fewer scratches, as measured by mounting steel wool and reciprocating 5 times under a load of 750 g. There may be 5 or less. There is no lower limit, but there may be 1 or more or 2 or more.
  • the ID card manufacturing method not only has remarkable fairness by using a composite coating film containing a hard coating layer with a thin thickness of 1 to 5 ⁇ m, but also the hard coating of the composite coating film is coated by impregnating a polycarbonate film.
  • the manufactured ID card can have remarkable scratch resistance and chemical resistance even if it includes a hard coating with a thickness of 1 to 5 ⁇ m.
  • the ID card may have a cross cutting grade of 2 to 5 as measured by ISO 2409.
  • the ID card that goes through the cross cutting can be coated with an impregnated hard coating to have excellent coating adhesion. This prevents the hard coating from falling off due to scratches, providing excellent appearance and preventing damage to security elements even after long-term use. there is.
  • Measurements were made based on IEC 60093, and samples were measured using a surface resistance meter (Simco-Ion, Model ST-4).
  • Measurements were made based on ISO 2409, and the sample was scratched into a grid shape with a cross cutter (manufacturer TQC), a measuring tape was attached to the scratches in a grid shape, it was removed again, and the coating that was lost was checked and measured.
  • the composite coating film prepared in the following Examples and Comparative Examples was made into a measurement sample of 100 After standing for 24 hours, the distance between the hard coatings at the four corners of the measurement sample was measured and the average was expressed.
  • the standard gloss of 60° was measured among contact light (25°, 60°, 85°) using an IAPE Glossmeter.
  • Measurement was made based on ASTM D1003, and the prepared sample was cut into 5 ⁇ 5 cm sizes to prepare a measurement specimen.
  • the prepared measurement specimen was placed in a haze meter and transmitted through light with a wavelength of 555 nm, and the transmittance was calculated by the following equation. Measured.
  • Transmittance (%) (Measurement specimen transmitted light/initial irradiated light) ⁇ 100
  • Measurements were made using ISO 4287, and the polycarbonate film was measured using a KEYENCE VHX-7000 Digital Optical Microscope in surface roughness measurement mode at scale 100 to 500 magnification.
  • a hard coating composition containing 99.7% by weight of KCC's KUV-30000 and 0.3% by weight of silica fume was prepared.
  • the surface roughness of a polycarbonate film (S Polytech Co., Ltd.) with a thickness of 100 ⁇ m was measured using the above-described surface roughness measurement method and is shown in Table 1 below.
  • the hard coating composition was coated on one side of a 100 ⁇ m thick polycarbonate film (S Polytech) using a bar coating method.
  • the polycarbonate film coated with the hard coating composition was cured through a curing machine (LZL-FL-200200-C, LICHTZEN) for 1 second at a light intensity of 730 mJ/cm2, and the hard coating thickness of the hard coating composition is shown in Table 1 below. It was manufactured to the indicated thickness.
  • the prepared composite coating film was measured using the above measurement method and is shown in Table 1 below.
  • a composite coating film was prepared in the same manner as in Preparation Example 2, except that a 100 ⁇ m thick polycarbonate film manufactured by IS Optics (average roughness: 0.1 ⁇ m) was used as the polycarbonate film.
  • the prepared composite coating film was measured using the above measurement method and is shown in Table 1 below.
  • a composite coating film was prepared in the same manner as in Preparation Example 2, except that silica fume was not included in the hard coating composition.
  • the prepared composite coating film was measured using the above measurement method and is shown in Table 1 below.
  • the composite coating film shown in Table 2 below was placed on both sides of a laminate of four polycarbonate films (S Polytech) with a thickness of 100 ⁇ m, and then the temperature was 180 °C and the pressure was 35 bar.
  • An ID card was manufactured by heat pressing for 20 minutes under these conditions and cold pressing for 25 minutes at room temperature and a pressure of 90 bar.
  • the manufactured ID card was measured using the above measurement method and is shown in Table 3 below.
  • An ID card was manufactured in the same manner as in Example 1, except that the cold pressing process was not performed at room temperature and a pressure of 90 bar for 25 minutes.
  • the manufactured ID card was measured using the above measurement method and is shown in Table 3 below.
  • An ID card was manufactured in the same manner as in Example 1, except that the composite coating film of Preparation Example 4 was used.
  • the manufactured ID card was measured using the above measurement method and is shown in Table 3 below.
  • An ID card was manufactured in the same manner as in Example 1, except that the composite coating film of Preparation Example 5 was used.
  • the manufactured ID card was measured using the above measurement method and is shown in Table 3 below.
  • An ID card was manufactured in the same manner as in Example 1, except that the composite coating film of Preparation Example 6 was used.
  • the manufactured ID card was measured using the above measurement method and is shown in Table 3 below.
  • An ID card was manufactured in the same manner as in Example 1, except that the composite coating film was not included.
  • the manufactured ID card was measured using the above measurement method and is shown in Table 3 below.
  • Example 1 HB 4 2 10 10
  • Example 2 H 3 2 10 10 Example 3 H 2 2 10 10
  • Example 4 HB 5 5 10 10
  • Example 6 H 4 4 10 10 Comparative Example 1 H 2
  • One 10 Comparative Example 2 2H 2 0 10 10 Comparative Example 3 3H 2 0 10 10 Comparative Example 4 B 38 - 10 16
  • the ID cards of Examples 1 to 6 are manufactured including the composite coating film of Preparation Examples 1 to 3, Preparation Example 7 or Preparation Example 8, and, as shown in Table 1, have very low curl and excellent transmittance, resulting in remarkable fairness. Not only can it have , but it also has excellent surface properties.
  • Comparative Example 4 was confirmed to have a much lower surface strength and a higher degree of yellowing than the Example, which was an ID card that did not include a hard coating.
  • Example 4 it is manufactured using the composite coating film of Preparation Example 7.
  • the composite coating film of Preparation Example 7 is harder than Example 2 by using a polycarbonate film with an average roughness of 0.1 ⁇ m. It was confirmed that the adhesive strength was low.
  • Example 5 was an ID card manufactured including the composite coating film of Preparation Example 8, which was manufactured without silica fume in the hard coating composition, and it was confirmed that the surface resistance was lower than that of Example 2.
  • Example 6 is an ID card manufactured by omitting the cold pressing step in the heat pressing process, and was confirmed to have lower coating adhesion than Example 2.
  • the ID card manufacturing method of the present invention uses a composite coating film impregnated with a hard coating and coated on a polycarbonate film to a thickness of 1 to 5 ⁇ m, and not only has very remarkable fairness, but also provides excellent cross-cutting measurement values. You can have it.

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Abstract

According to an ID card manufacturing method of the present invention, the use of a hard-coated composite coating film with a thickness of 1 to 5 ㎛ allows for excellent accurate position recognition in an automated process and significantly reduces the curl of the composite coating film, thereby ensuring remarkable processability, and manufactured ID cards can have superior scratch resistance and chemical resistance of a hard coating since the hard coating is coated by impregnation.

Description

ID 카드 제조방법 및 하드코팅을 포함하는 ID 카드ID card including ID card manufacturing method and hard coating
본 발명은 ID 카드 제조방법과 하드코팅을 포함하는 ID 카드에 관한 것이다.The present invention relates to an ID card manufacturing method and an ID card including a hard coating.
현재 주민등록증, 운전면허증, 자격증 또는 전자여권 등의 ID 카드는 개인정보 보안과 사용자의 ID 식별이 중요하게 되면서, 식별요소들이 형성된 ID 카드 또는 전자여권 등으로 교체되고 있는 추세이다.Currently, ID cards such as resident registration cards, driver's licenses, certificates, or electronic passports are being replaced by ID cards or electronic passports with identification elements as personal information security and user ID identification become important.
종래의 ID 카드는 폴리카보네이트, 폴리(메트)아크릴레이트, 폴리비닐클로라이드 또는 폴리프로필렌 등의 우수한 투명성을 가지는 수지로부터 제조된 필름/시트로 제조되며, 우수한 유연성을 가지는 폴리카보네이트 필름/시트가 많이 사용되고 있다. 하지만 폴리카보네이트는 낮은 내화학성 및 내스크래치성을 가지며, 폴리카보네이트 필름/시트로부터 제조된 ID 카드는 알코올 등의 유기용매에 매우 취약할 뿐 아니라, 장시간 사용하면 표면에 다량의 스크래치가 발생되는 문제점을 가진다.Conventional ID cards are manufactured from films/sheets made from resins with excellent transparency such as polycarbonate, poly(meth)acrylate, polyvinyl chloride, or polypropylene, and polycarbonate films/sheets with excellent flexibility are widely used. there is. However, polycarbonate has low chemical resistance and scratch resistance, and ID cards made from polycarbonate film/sheet are not only very vulnerable to organic solvents such as alcohol, but also have the problem of generating a large amount of scratches on the surface when used for a long time. have
상기 폴리카보네이트 필름/시트로부터 제조된 ID 카드문제를 해결하고자, 미국 등록특허 US6146032 및 대한민국 등록특허공보 제10-0385931호에 개시된 바와 같이, 폴리카보네이트 필름/시트 상에 보호필름을 부착하거나, 경화형 수지 조성물을 코팅하고 경화하는 공정을 포함하여 보호층이 형성된 ID 카드를 제조하였다.In order to solve the problem of ID cards manufactured from the polycarbonate film/sheet, as disclosed in US Patent US6146032 and Korean Patent Registration No. 10-0385931, a protective film is attached to the polycarbonate film/sheet, or a curable resin is used. An ID card with a protective layer was manufactured, including the process of coating and curing the composition.
하지만 상기의 방법으로 ID 카드에 보호층을 형성하는 방법은 미코팅된 폴리카보네이트 필름/시트를 하나하나 사용하여, 보호층을 형성하여야 함으로써, 공정성이 매우 좋지 못한 단점이 있다. 또한 상기 인용발명의 방법으로 제조된 ID 카드는 보호층의 두께가 10 내지 100 ㎛의 매우 두꺼운 보호층으로 인하여, 레이저를 사용하는 장착(fitting) 또는 재단 등의 공정에서 정위치 인식문제로 자동화 공정에 많은 제약이 수반되었다.However, the method of forming a protective layer on an ID card using the above method has the disadvantage of having very poor fairness because the protective layer must be formed using uncoated polycarbonate films/sheets one by one. In addition, the ID card manufactured by the method of the cited invention has a very thick protective layer of 10 to 100 ㎛, so it is an automated process due to position recognition problems in processes such as fitting or cutting using a laser. was accompanied by many restrictions.
최근의 ID 카드 제조방법은 보호층의 두께를 얇게 하여 자동화 공정의 제약을 해결하려 하였으나, ID 카드의 보호층 두께가 얇아짐에 따라서, ID 카드 제조공정에서 발생되는 스크래치 문제가 발생되고, 하드코팅이 가지는 표면특성을 가질 수 없었다.Recent ID card manufacturing methods have attempted to solve the limitations of the automated process by thinning the thickness of the protective layer, but as the protective layer thickness of the ID card becomes thinner, scratch problems occur during the ID card manufacturing process, and hard coating This branch could not have surface properties.
즉, ID 카드의 자동화 공정성을 가지는 측면에서, 보호층의 두께를 얇게 제조하는 것이 선호되나, 보호층의 두께가 감소하면 제조되는 ID 카드의 내스크래치성 및 내화학성이 감소하는 공정성과 보호층을 포함하여 가질 수 있는 이점의 상보적 관계를 해결하지 못하였다.In other words, in terms of automated processability of ID cards, it is preferable to manufacture the protective layer with a thin thickness, but as the thickness of the protective layer decreases, the scratch resistance and chemical resistance of the manufactured ID card decreases. It was not possible to resolve the complementary relationship between the benefits that could be included.
따라서 종래의 ID 카드 제조방법이 가지는 낮은 공정성 문제를 해결하고, 더 나아가 두꺼운 보호층으로 인한 낮은 정위치 인식문제를 해결하여 현저한 공정성을 가지는 새로운 ID 카드 제조방법뿐 아니라, 현저한 내스크래치성 및 내화학성을 가지는 ID 카드를 제조할 수 있는 새로운 ID 카드 제조공정이 필요한 실정이다.Therefore, it solves the low fairness problem of the conventional ID card manufacturing method, and further solves the problem of low position recognition due to the thick protective layer, thereby providing a new ID card manufacturing method with remarkable fairness, as well as remarkable scratch resistance and chemical resistance. There is a need for a new ID card manufacturing process that can manufacture ID cards with .
본 발명의 목적은 종래의 ID 카드가 가지는 보호층 두께에 따른 공정성과 보호층의 기능성 효과의 상보적 관계를 해결하고자, 현저한 공정성을 가지는 ID 카드 제조방법과 우수한 내스크치성 및 내화학성을 가지는 ID 카드를 제공하는 것이다. The purpose of the present invention is to solve the complementary relationship between fairness according to the thickness of the protective layer of a conventional ID card and the functional effect of the protective layer, a method of manufacturing an ID card with remarkable fairness, and an ID card with excellent scratch resistance and chemical resistance. The card is provided.
본 발명의 목적은 컬 발생과 정전기로 인한 ID 카드의 공정성 문제를 해결하여 더욱 현저한 공정성을 가지는 ID 카드 제조방법을 제공하는 것이다.The purpose of the present invention is to provide a method of manufacturing ID cards with greater fairness by solving the fairness problems of ID cards caused by curling and static electricity.
본 발명의 ID 카드 제조방법은 폴리카보네이트 필름 상에 하드코팅 조성물을 코팅 및 경화하여 1 내지 5 ㎛ 두께의 하드코팅을 포함하는 복합 코팅필름을 제조하는 단계 및 적층체 및 상기 복합 코팅필름을 포함하여 열압착하는 단계를 포함한다.The ID card manufacturing method of the present invention includes the steps of coating and curing a hard coating composition on a polycarbonate film to produce a composite coating film including a hard coating with a thickness of 1 to 5 ㎛, a laminate, and the composite coating film. It includes the step of heat compression.
일 구현예로서, 상기 복합 코팅필름을 제조하는 단계는 폴리카보네이트 필름의 골에 하드코팅 조성물이 함침되어 하드코팅을 형성하는 것일 수 있다. As an embodiment, the step of manufacturing the composite coating film may involve impregnating the valleys of the polycarbonate film with a hard coating composition to form a hard coating.
일 구현예로서, 상기 복합 코팅필름은 하기 식 1을 만족하는 것일 수 있다.As one embodiment, the composite coating film may satisfy Equation 1 below.
[식 1][Equation 1]
1.01 ≤ TH/T0 ≤ 1.15 1.01 ≤ T H /T 0 ≤ 1.15
(상기 식 1에서, TH는 복합 코팅필름의 두께이며, T0은 폴리카보네이트 필름 두께이다.) (In Equation 1 above, T H is the thickness of the composite coating film, and T 0 is the polycarbonate film thickness.)
일 구현예로서, 상기 폴리카보네이트 필름은 ISO 4287로 측정한 평균조도가 1 내지 15 ㎛일 수 있다. As one embodiment, the polycarbonate film may have an average roughness of 1 to 15 ㎛ as measured by ISO 4287.
일 구현예로서, 상기 폴리카보네이트 필름은 ISO 4287로 측정한 평균조도가 1 내지 15 ㎛일 수 있다. As one embodiment, the polycarbonate film may have an average roughness of 1 to 15 ㎛ as measured by ISO 4287.
일 구현예로서, 상기 복합 코팅필름은 25 ℃에서 24 시간 정치 후, 평면에 위치시켰을 때, 네모서리가 평면에 이격되는 거리의 평균 값이 6 ㎜ 이하일 수 있다.As one embodiment, when the composite coating film is placed on a flat surface after standing at 25° C. for 24 hours, the average distance between the four edges on the flat surface may be 6 mm or less.
일 구현예로서, 상기 복합 코팅필름은 ISO 2813로 측정한 광택도가 10 내지 30 %일 수 있다.As one embodiment, the composite coating film may have a glossiness of 10 to 30% as measured by ISO 2813.
일 구현예로서, 상기 하드코팅 조성물은 다공성 입자 0.1 내지 0.3 중량%를 포함하는 것일 수 있다.As one embodiment, the hard coating composition may contain 0.1 to 0.3% by weight of porous particles.
일 구현예로서, 상기 하드코팅 조성물은 주제, 가교제 및 개시제를 포함하는 것일 수 있다.As one embodiment, the hard coating composition may include a base material, a crosslinking agent, and an initiator.
일 구현예로서, 상기 적층체는 열가소성 필름을 1 내지 10 개로 적층한 것일 수 있다.As one embodiment, the laminate may be a laminate of 1 to 10 thermoplastic films.
일 구현예로서, 상기 열압착하는 단계는 순차적으로 가열압착 공정과 냉각압착 공정을 포함하는 것일 수 있다.As one embodiment, the heat compression step may sequentially include a heat compression process and a cold compression process.
(1) 가열압착: 150 내지 250 ℃의 온도에서, 5 내지 50 bar의 압력으로 압착,(1) Heat compression: Compression at a temperature of 150 to 250 ° C. and a pressure of 5 to 50 bar,
(2) 냉각압착: 5 내지 30 ℃의 온도에서, 30 내지 100 bar의 압력으로 압착.(2) Cold pressing: Compressing at a temperature of 5 to 30° C. and a pressure of 30 to 100 bar.
일 구현예로서, 상기 ID 카드 제조방법은 레이저를 조사하여 각인하는 공정을 더 포함하는 것일 수 있다. As an embodiment, the ID card manufacturing method may further include a process of engraving by irradiating a laser.
본 발명의 ID 카드는 기재 및 상기 기재; 일면 또는 양면에 1 내지 5 ㎛ 두께 하드코팅을 포함한다.The ID card of the present invention includes a description and the above description; It includes a 1 to 5 ㎛ thick hard coating on one or both sides.
일 구현예로서, 상기 하드코팅은 두께가 2 내지 3 ㎛ 두께일 수 있다.As one embodiment, the hard coating may have a thickness of 2 to 3 ㎛.
일 구현예로서, 상기 ID 카드는 ASTM E313로 측정한 황변성이 5 % 이하일 수 있다. As one embodiment, the ID card may have a yellowing property of 5% or less as measured by ASTM E313.
일 구현예로서, 상기 ID 카드는 ISO 15184로 측정한 표면 연필경도가 HB 이상일 수 있다.As an embodiment, the ID card may have a surface pencil hardness of HB or higher as measured by ISO 15184.
본 발명의 ID 카드 제조방법은 두께 1 내지 5 ㎛의 하드코팅을 함유하는 복합 코팅필름을 사용함으로써, 연속적으로 다량의 ID 카드를 제조할 수 있는 현저한 공정성을 가질 수 있다.The ID card manufacturing method of the present invention can have remarkable processability for continuously manufacturing a large amount of ID cards by using a composite coating film containing a hard coating with a thickness of 1 to 5 ㎛.
본 발명의 복합 코팅필름은 폴리카보네이트 필름 상의 미세기공에 함침된 하드코팅을 포함함으로써, 상기 범위의 하드코팅 두께를 가져도, 이를 포함하여 제조되는 ID 카드는 하드코팅을 포함하여 얻어지는 우수한 기능적 효과를 유지할 수 있다. The composite coating film of the present invention includes a hard coating impregnated into the micropores on the polycarbonate film, so even if the hard coating thickness is in the above range, the ID card manufactured including this has excellent functional effects obtained by including the hard coating. It can be maintained.
본 발명의 ID 카드 제조방법은 본 발명에서 정의하는 측정방법으로 측정한 이격된 거리(컬)가 6 ㎜ 이하일 수 있음으로써, ID 카드의 대량생산이 가능할 수 있으며, 제조되는 ID 카드는 현저한 내후성을 가질 수 있다. The ID card manufacturing method of the present invention can enable mass production of ID cards as the distance (curl) measured by the measurement method defined in the present invention can be 6 mm or less, and the manufactured ID cards have remarkable weather resistance. You can have it.
따라서 본 발명의 ID 카드 제조방법은 종래의 ID 카드 제조방법의 각각을 하드코팅을 형성하여 나타나는 낮은 공정성 문제를 해결하고, 종래의 ID 카드가 가지는 두꺼운 보호층으로 인한 낮은 식별요소 인식성, 낮은 치수 안정성 및 낮은 공정성 문제를 해결할 뿐 아니라, 제조된 ID 카드는 우수한 내스크래치성 및 내화학성을 가질 수 있다.Therefore, the ID card manufacturing method of the present invention solves the problem of low fairness caused by forming a hard coating in each of the conventional ID card manufacturing methods, and low recognition element recognition and low dimensions due to the thick protective layer of the conventional ID card. In addition to solving the problems of stability and low processability, the manufactured ID cards can have excellent scratch resistance and chemical resistance.
본 명세서에서 사용되는 기술 용어 및 과학 용어에 있어서 다른 정의가 없다면, 이 발명이 속하는 기술 분야에서 통상의 지식을 가진 자가 통상적으로 이해하고 있는 의미를 가지며, 하기의 설명 및 첨부 도면에서 본 발명의 요지를 불필요하게 흐릴 수 있는 공지 기능 및 구성에 대한 설명은 생략한다. Unless otherwise defined, the technical and scientific terms used in this specification have the meanings commonly understood by those skilled in the art to which this invention pertains, and the gist of the present invention is summarized in the following description and accompanying drawings. Descriptions of known functions and configurations that may unnecessarily obscure are omitted.
또한, 본 명세서에서 사용되는 단수 형태는 문맥에서 특별한 지시가 없는 한 복수 형태도 포함하는 것으로 의도할 수 있다.Additionally, as used herein, the singular forms “a,” “an,” and “the” are intended to include the plural forms as well, unless the context clearly dictates otherwise.
또한, 본 명세서에서 특별한 언급 없이 사용된 단위는 중량을 기준으로 하며, 일 예로 % 또는 비의 단위는 중량% 또는 중량비를 의미하고, 중량%는 달리 정의되지 않는 한 전체 조성물 중 어느 하나의 성분이 조성물 내에서 차지하는 중량%를 의미한다.In addition, units used without special mention in this specification are based on weight, and as an example, the unit of % or ratio means weight % or weight ratio, and weight % refers to the amount of any one component of the entire composition unless otherwise defined. It refers to the weight percent occupied in the composition.
또한, 본 명세서에서 사용되는 수치 범위는 하한치와 상한치와 그 범위 내에서의 모든 값, 정의되는 범위의 형태와 폭에서 논리적으로 유도되는 증분, 이중 한정된 모든 값 및 서로 다른 형태로 한정된 수치 범위의 상한 및 하한의 모든 가능한 조합을 포함한다. 본 발명의 명세서에서 특별한 정의가 없는 한 실험 오차 또는 값의 반올림으로 인해 발생할 가능성이 있는 수치범위 외의 값 역시 정의된 수치범위에 포함된다.In addition, the numerical range used in this specification includes the lower limit and upper limit and all values within the range, increments logically derived from the shape and width of the defined range, all double-defined values, and the upper limit of the numerical range defined in different forms. and all possible combinations of the lower bounds. Unless otherwise specified in the specification of the present invention, values outside the numerical range that may occur due to experimental error or rounding of values are also included in the defined numerical range.
본 명세서의 용어, '포함한다'는 '구비한다', '함유한다', '가진다' 또는 '특징으로 한다' 등의 표현과 등가의 의미를 가지는 개방형 기재이며, 추가로 열거되어 있지 않은 요소, 재료 또는 공정을 배제하지 않는다.The term 'comprise' in this specification is an open description with the same meaning as expressions such as 'comprising', 'contains', 'has' or 'characterized by', and includes elements that are not additionally listed, Does not exclude materials or processes.
본 명세서의 용어, '하드코팅의 두께'는 폴리카보네이트 필름을 ISO 4287로 측정한 평균조도의 중심선(Center line average)을 기준으로 측정한 하드코팅 두께일 수 있다.The term 'thickness of hard coating' in this specification may be the hard coating thickness measured based on the center line average of the average roughness of the polycarbonate film measured by ISO 4287.
종래의 ID 카드 제조방법은 두꺼운 보호층으로 인한 자동화 공정에 많은 제약을 가지며, 이를 해결하고자 보호층을 보다 얇게 하여 우수한 자동화 공정을 가지려 하였으나, 제조되는 ID 카드의 내스크래치성 및 내화학성이 하락되는 ID 카드의 공정성과 제조된 ID 카드의 물성의 상보적 관계에 직면하였다. 상기 하드코팅 두께에 따른 ID 카드의 공정성 및 표면특성의 상보적 관계를 해결하고자, 본 발명의 발명자들은 복합 코팅필름을 포함하여 현저한 공정성을 가지며, 제조되는 ID 카드의 표면특성을 가질 수 있는 ID 카드 제조방법을 발견하고 본 발명을 완성하기에 이르렀다.The conventional ID card manufacturing method has many limitations in the automated process due to the thick protective layer. To solve this, an attempt was made to have an excellent automated process by making the protective layer thinner, but the scratch resistance and chemical resistance of the manufactured ID card decreased. We were faced with a complementary relationship between the fairness of the ID card being made and the physical properties of the manufactured ID card. In order to solve the complementary relationship between the fairness and surface characteristics of the ID card according to the hard coating thickness, the inventors of the present invention have developed an ID card that has remarkable fairness including a composite coating film and can have the surface characteristics of the manufactured ID card. A manufacturing method was discovered and the present invention was completed.
본 발명의 ID 카드 제조방법은 폴리카보네이트 필름 상에 하드코팅 조성물을 코팅하고 경화하여 1 내지 5 ㎛ 두께의 하드코팅을 포함하는 복합 코팅필름을 제조하는 단계 및 적층체 및 상기 복합 코팅필름을 포함하여 열압착하는 단계를 포함하는 것일 수 있다.The ID card manufacturing method of the present invention includes the steps of coating and curing a hard coating composition on a polycarbonate film to produce a composite coating film including a hard coating with a thickness of 1 to 5 ㎛, a laminate, and the composite coating film. It may include the step of heat compression.
또 다른 일 구현예로서, 상기 하드코팅의 두께는 2 내지 3 ㎛일 수 있다. As another example, the hard coating may have a thickness of 2 to 3 ㎛.
상기의 두께를 가지는 하드코팅을 함유하는 복합 코팅필름은 컬의 발생되지 않을 수 있으며, 이를 포함하는 ID 카드 제조방법에서 피딩 및 재단 등의 공정에서 정위치 인식이 우수할 수 있다. A composite coating film containing a hard coating having the above thickness may not cause curl, and may have excellent position recognition in processes such as feeding and cutting in an ID card manufacturing method including this.
일 구현예로서, 상기 ID 카드 제조방법은 레이저를 조사하여 각인하는 공정을 더 포함하는 것일 수 있다. As an embodiment, the ID card manufacturing method may further include a process of engraving by irradiating a laser.
상기 각인하는 공정은 열압착하는 단계 후의 제조된 ID 카드를 레이저를 조사여 각인하는 것일 수 있으며, 하드코팅의 두께가 5 ㎛ 이하를 가짐으로써, 각인 불량률이 현저히 감소할 수 있다. The engraving process may be engraving the manufactured ID card after the thermal compression step by irradiating a laser, and by having a hard coating thickness of 5 ㎛ or less, the imprint defect rate can be significantly reduced.
이하 본 발명의 ID 카드 제조방법에서 복합 코팅필름을 제조하는 단계에 대해서 보다 상세히 설명한다.Hereinafter, the step of manufacturing the composite coating film in the ID card manufacturing method of the present invention will be described in more detail.
일 구현예로서, 상기 복합 코팅필름을 제조하는 단계는 폴리카보네이트 필름의 골에 하드코팅 조성물이 함침되어 코팅되는 것일 수 있다.As an embodiment, the step of manufacturing the composite coating film may involve impregnating and coating the valleys of the polycarbonate film with a hard coating composition.
상기 폴리카보네이트 필름의 골은 폴리카보네이트 필름의 표면 중심선 보다 낮은 표면거칠기를 의미하는 것일 수 있다. 상기 복합 코팅필름은 폴리카보네이트 필름의 표면 골에 하드코팅 조성물이 함침되어서 코팅되어, 1 내지 5 ㎛의 두께로 하드코팅이 형성되어도, 컬 발생이 적을 뿐 아니라, 하드코팅이 우수한 접착력을 가져, 장기간 하드코팅을 유지할 수 있다. The valleys of the polycarbonate film may mean a surface roughness lower than the surface center line of the polycarbonate film. The composite coating film is coated by impregnating the surface valleys of the polycarbonate film with a hard coating composition, so even when the hard coating is formed to a thickness of 1 to 5 ㎛, not only is there little curling, but the hard coating has excellent adhesion, so that it can last for a long time. The hard coating can be maintained.
일 구현예로서, 상기 복합 코팅필름은 하기 식 1을 만족하는 것일 수 있다. As one embodiment, the composite coating film may satisfy Equation 1 below.
[식 1][Equation 1]
1.01 ≤ TH/T0 ≤ 1.15 1.01 ≤ T H /T 0 ≤ 1.15
(상기 식 1에서, TH는 복합 코팅필름의 두께이며, T0은 제1 폴리카보네이트 필름 두께이다.)(In Equation 1, T H is the thickness of the composite coating film, and T 0 is the thickness of the first polycarbonate film.)
구체적으로 상기 복합 코팅필름은 식 1에서 TH/T0이 1.10 이하일 수 있으며, 더욱 구체적으로 1.05 이하를 만족할 수 있다. Specifically, the composite coating film may satisfy T H /T 0 of 1.10 or less in Equation 1, and more specifically, 1.05 or less.
상기 식 1을 만족하는 복합 코팅필름은 폴리카보네이트 필름의 골에 하드코팅 조성물이 함침되어 코팅되고, 경화하여 제조되는 복합코팅필름의 두께변화가 적을 것을 의미할 수 있다.A composite coating film that satisfies Equation 1 may mean that the change in thickness of the composite coating film produced by impregnating the valleys of a polycarbonate film with a hard coating composition, coating the film, and curing the film may result in a small change in thickness.
상기 하드코팅이 함침되어 코팅된 복합 코팅필름은 매우 얇은 하드코팅을 가져 현저한 ID 카드 제조방법의 공정성을 가질 수 있을 뿐 아니라, 제조된 ID 카드가 하드코팅의 두께가 감소함에 따르는 내스크래치성 및 내화학성이 하락되는 것일 방지할 수 있다. 그 뿐만 아니라, 상기 복합 코팅필름은 하드코팅을 포함하여도 두께 변화율이 크지 않음으로써, 제조되는 ID 카드는 현저한 치수안정성을 가질 수 있다.The composite coating film coated by impregnating the hard coating has a very thin hard coating, which not only allows for remarkable fairness in the ID card manufacturing method, but also allows the manufactured ID card to have scratch resistance and resistance as the thickness of the hard coating decreases. It can prevent chemical properties from deteriorating. In addition, since the composite coating film does not have a large thickness change rate even if it includes a hard coating, the manufactured ID card can have remarkable dimensional stability.
일 구현예로서, 상기 하드코팅 조성물은 폴리카보네이트 필름 상에 코팅되는 두께가 1 내지 20 ㎛일 수 있으며, 구체적으로는 1 내지 15 ㎛일 수 있으나, 하드코팅 조성물을 경화하여 형성되는 하드코팅의 두께가 1 내지 5 ㎛를 가는 것이라면 이를 제한하는 것은 아니다. As an embodiment, the hard coating composition may have a thickness coated on a polycarbonate film of 1 to 20 ㎛, specifically 1 to 15 ㎛, but the thickness of the hard coating formed by curing the hard coating composition This is not limited as long as it is 1 to 5 ㎛.
일 구현예로서, 상기 폴리카보네이트 필름에 하드코팅 조성물을 코팅하는 공정은 하드코팅 조성물이 코팅되는 것이라면 이를 제한하는 것은 아니나, 다이스 코터, 마이크로 그라비어, 스핀코팅 등의 방법으로 도포하고 경화하여 제조될 수 있다.As an embodiment, the process of coating the hard coating composition on the polycarbonate film is not limited as long as the hard coating composition is coated, but can be manufactured by applying and curing using a die coater, micro gravure, spin coating, etc. there is.
일 구현예로서, 상기 복합 코팅필름의 폴리카보네이트 필름은 ISO 4287로 측정한 평균조도가 1 내지 15 ㎛일 수 있으며, 구체적으로는 1 내지 10 ㎛, 더욱 구체적으로는 1 내지 5 ㎛일 수 있다.As an embodiment, the polycarbonate film of the composite coating film may have an average roughness measured by ISO 4287 of 1 to 15 ㎛, specifically 1 to 10 ㎛, and more specifically 1 to 5 ㎛.
상기 범위의 평균조도를 가지는 폴리카보네이트 필름은 두께 1 내지 5 ㎛의 두께로 하드코팅을 형성하여도, 하드코팅이 우수한 접착력을 가져, 하드코팅이 벗겨지는 현상을 억제함으로써, 장기간 우수한 내스크래치성 및 내화학성을 가질 수 있다.A polycarbonate film having an average roughness in the above range has excellent adhesion even when the hard coating is formed to a thickness of 1 to 5 ㎛, suppressing the peeling phenomenon of the hard coating, and providing excellent long-term scratch resistance and durability. Can have chemical resistance.
일 구현예로서, 상기 하드코팅 조성물은 주제, 가교제 및 개시제를 포함하는 것일 수 있다. As one embodiment, the hard coating composition may include a base material, a crosslinking agent, and an initiator.
일 구현예로서, 상기 주제는 아크릴계 주제, 우레탄-아크릴계 주제 또는 이들의 혼합물일 수 있으나, 이를 제한하는 것은 아니며, 가교 가능한 다관능기를 함유하는 것이라면 이를 제한하는 것은 아니다. As an embodiment, the base material may be an acrylic base base, a urethane-acrylic base base, or a mixture thereof, but is not limited thereto, and is not limited as long as it contains a crosslinkable multifunctional group.
상기 아크릴계 주제는 비제한적인 일예로서, 폴리에틸렌글리콜 디아크릴레이트(Poly(ethylene glycol) diacrylate; PEGDA), 2-하이드록시에틸 메타크릴레이트(2-Hydroxyethyl methacrylate; HEMA) 비스페놀 A 글리시딜 메타크릴레이트(Bisphenol A glycidyl methacrylate; Bis-GMA)를 사용하는 것이 우수한 투명성을 가질 수 있는 측면에서 선호될 수 있으나, 이를 제한하지는 않는다.The acrylic base material includes, but is not limited to, poly(ethylene glycol) diacrylate (PEGDA), 2-Hydroxyethyl methacrylate (HEMA), and bisphenol A glycidyl methacrylate. The use of (Bisphenol A glycidyl methacrylate; Bis-GMA) may be preferred in terms of excellent transparency, but this is not limited.
상기 2 관능 우레탄-아크릴계 주제는 상기 아크릴계 주제보다 우수한 유연성을 가질 수 있으나, 이를 제한하는 것은 아니며, 비제한적인 일예로서, 2 관능기 우레탄 올리고머, 3 관능기 우레탄 아크릴계 올리고머, 4 관능기 우레탄 아크릴레이트 올리고머, 5 관능기 우레탄 아크릴계 올로리고머 및 6 관능기 아크릴레이트 올리고머에서 선택되는 어느 하나 또는 둘 이상을 포함하는 것일 수 있다.The bifunctional urethane-acrylic base may have superior flexibility than the acrylic base, but this is not limited. As non-limiting examples, bifunctional urethane oligomer, trifunctional urethane acrylic oligomer, tetrafunctional urethane acrylate oligomer, 5 It may contain one or two or more functional groups selected from urethane acrylic oligomers and six-functional acrylate oligomers.
일 구현예로서, 상기 가교제는 이를 포함하는 하드코팅 조성물의 빠른 경화를 가지는 측면에서, 3관능기 이상 함유하는 아크릴계 단량체를 포함하는 것이 선호될 수 있으나, 제조되는 ID 카드의 물성을 저해하는 것인 아니라면, 반드시 이를 제한하는 것은 아니다.In one embodiment, the crosslinking agent may preferably include an acrylic monomer containing three or more functional groups in terms of rapid curing of the hard coating composition containing the crosslinking agent, unless it impairs the physical properties of the ID card being manufactured. , it does not necessarily limit this.
상기 가교제는 일예로서, 3 내지 16 관능기를 함유하는 아크릴계 단량체일 수 있으며, 관능기가 증가할수록 경화속도가 감소하고 경화조건(열량 또는 광량)이 감소하여 선호될 수 있으나, 이를 제한하는 것은 아니다.As an example, the crosslinking agent may be an acrylic monomer containing 3 to 16 functional groups. As the functional group increases, the curing speed decreases and the curing conditions (heat or light) decrease, which may be preferred, but is not limited thereto.
상기 열 개시제는 일예로서, 아조계 개시제, 퍼옥시에스테르 화합물, 퍼옥시 디카보네이트계 화합물, 아실 퍼옥사이드, 케톤 퍼옥사이드, 퍼옥시 케탈 및 디알킬 퍼옥시드 등에서 선택되는 하나 또는 둘 이상을 포함할 수 있으나, 이를 경화한 하드코팅의 물성을 저해하는 것이 아니라면 이를 제한하는 것은 아니다.As an example, the thermal initiator may include one or two or more selected from azo-based initiators, peroxyester compounds, peroxy dicarbonate-based compounds, acyl peroxides, ketone peroxides, peroxy ketals, and dialkyl peroxides. However, this is not limited as long as it does not impair the physical properties of the hardened hard coating.
상기 광 개시제는 일예로서, 2-하이드록시-2-메틸-1-페닐프로판-1-페논, 1-하이드록시싸이클로헥실페닐케톤, 벤조 페논, 1-(4-이소프로필페닐) 2-하이드록시 2-메틸 1-온, 1-[4-(2-하이드록시에톡시)페닐]-2-하이드록시-2-메틸 프로판 1-온, α,α-다이에톡시아세토페논, 2,2-디에톡시 1-페닐 에타논 및 비스(2,4,6-트리메틸 벤조일)-페닐포스핀 옥사이드 등에서 선택되는 어느 하나 또는 둘 이상을 포함할 수 있으나, 자외선 광량 600 내지 800 mJ/㎠으로 경화가 가능한 것이라면 이를 제한하는 것은 아니다.The photoinitiator is, for example, 2-hydroxy-2-methyl-1-phenylpropane-1-phenone, 1-hydroxycyclohexylphenylketone, benzophenone, 1-(4-isopropylphenyl) 2-hydroxy 2-methyl 1-one, 1-[4-(2-hydroxyethoxy)phenyl]-2-hydroxy-2-methyl propane 1-one, α,α-diethoxyacetophenone, 2,2- It may contain one or more than one selected from diethoxy 1-phenyl ethanone and bis(2,4,6-trimethyl benzoyl)-phenylphosphine oxide, but can be cured at an ultraviolet light intensity of 600 to 800 mJ/㎠. This does not limit it.
일 구현예로서, 상기 하드코팅 조성물은 유기용매를 더 포함하는 것일 수 있다.As one embodiment, the hard coating composition may further include an organic solvent.
상기 유기용매를 더 포함하는 하드코팅 조성물은 작업성이 좋은 점도를 제공하여, 상기 폴리카보네이트 필름 상에 균일한 두께로 도포 또는 코팅할 수 있어 선호될 수 있다.A hard coating composition further containing the organic solvent may be preferred because it provides a viscosity that is good for workability and can be applied or coated with a uniform thickness on the polycarbonate film.
상기 유기용매는 광경화형 하드코팅 조성물 또는 열경화형 하드코팅 조성물에 따라 상일 할 수 있다.The organic solvent may be different depending on the photo-curable hard coating composition or the heat-curable hard coating composition.
구체적으로 상기 하드코팅 조성물이 광경화형인 경우, 유기용매는 일예로서, 메틸(메타)아크릴레이트, 에틸(메타)아크릴레이트, 부틸(메타)아크릴레이트, 테트라하이드로퍼퓨릴(메타)아크릴레이트, 이소데실(메타)아크릴레이트, 2-(2-에톡시에톡시)에틸 (메타)아크릴레이트, 스테아릴(메타)아크릴레이트, 라우릴(메타)아크릴레이트, 2-페녹시에틸 (메타)아크릴레이트, 아이소보닐(메타)아크릴레이트, 트리데실(메타)아크릴레이트, 폴리카프로락톤(메타)아크릴레이트 등에서 선택되는 어느 하나 또는 둘 이상의 희석 단량체일 수 있다. Specifically, when the hard coating composition is a photocurable type, organic solvents include, for example, methyl (meth)acrylate, ethyl (meth)acrylate, butyl (meth)acrylate, tetrahydrofurfuryl (meth)acrylate, and isopropyl acrylate. Decyl (meth)acrylate, 2-(2-ethoxyethoxy)ethyl (meth)acrylate, stearyl (meth)acrylate, lauryl (meth)acrylate, 2-phenoxyethyl (meth)acrylate , isobornyl (meth)acrylate, tridecyl (meth)acrylate, polycaprolactone (meth)acrylate, etc. It may be any one or two or more diluted monomers selected.
또한 구체적으로 유기용매는 하드코팅 조성물이 열경화형인 경우, 일예로서, 톨루엔, 테르라하이드로퓨란, 아세톤, 디클로로메탄 및 에틸아세트산 등일 수 있다.Additionally, specifically, when the hard coating composition is a thermosetting type, the organic solvent may be, for example, toluene, terahydrofuran, acetone, dichloromethane, and ethyl acetic acid.
또 다른 일 구현예로서, 상기 하드코팅 조성물은 상용된 것일 수 있으며, 일예로서, ㈜SMS사의 SDHC-100F, ㈜KCC사의 KUV-3000 또는 KUT-1000(CU)TN일 수 있으나 이를 한정하는 것은 아니다.As another embodiment, the hard coating composition may be a commercially available one, and as an example, it may be SDHC-100F from SMS Co., Ltd., KUV-3000 or KUT-1000(CU)TN from KCC Co., Ltd., but is not limited thereto. .
일 구현예로서, 상기 하드코팅 조성물은 다공성 입자 0.1 내지 0.3 중량%를 포함하는 것일 수 있다. As one embodiment, the hard coating composition may contain 0.1 to 0.3% by weight of porous particles.
상기 다공성 입자는 일예로서, 실리카퓸, CNT, 흑연 및 알루미나 등에서 선택되는 하나 또는 둘 이상일 수 있으며, 상기 다공성 입자를 더 포함하는 하드코팅 조성물은 이를 경화한 하드코팅 표면이 보다 매트(Matt)한 성질을 구현할 수 있어, 지문 또는 오염물에 의한 표면오염을 방지할 수 있다.As an example, the porous particles may be one or two or more selected from silica fume, CNT, graphite, and alumina, and the hard coating composition further containing the porous particles has a more matte surface after curing the hard coating composition. can be implemented, preventing surface contamination by fingerprints or contaminants.
일 구현예로서, 상기 하드코팅 조성물은 자외선 안정제, 열 안정제, 항산화제, 자외선 흡수제, 계면 활성제, 윤활제 및 오염방지제 등에서 선택되는 어느 하나 또는 둘 이상의 첨가제를 더 포함할 수 있다. As one embodiment, the hard coating composition may further include one or more additives selected from UV stabilizers, heat stabilizers, antioxidants, UV absorbers, surfactants, lubricants, and anti-fouling agents.
상기 첨가제를 더 포함하는 하드코팅 조성물은 ID 카드 제조방법에서 고온에 의한 물성저하를 억제할 수 있으며, 제조된 ID 카드의 열 및 자외선에 대한 물성저하를 보다 우수하게 할 수 있으나, 이를 제한하는 것은 아니다. A hard coating composition further containing the above additive can suppress the deterioration of physical properties due to high temperature in the ID card manufacturing method and can improve the deterioration of the physical properties of the manufactured ID card against heat and ultraviolet rays, but limiting this is not possible. no.
일 구현예로서, 상기 복합 코팅필름을 제조하는 단계에서 폴리카보네이트 필름은 두께가 30 내지 200 ㎛일 수 있으며, 좋게는 50 내지 150 ㎛일 수 있다. As an embodiment, in the step of manufacturing the composite coating film, the polycarbonate film may have a thickness of 30 to 200 ㎛, preferably 50 to 150 ㎛.
상기 범위의 두께를 가지는 폴리카보네이트를 포함하여 제조된 복합 코팅필름은 ID 카드 제조방법에서 우수한 정위치 인식성을 가질 수 있어 선호될 수 있으나, 제조되는 복합 코팅필름의 물성을 저해하는 것이 아니라면 이를 제한하는 것은 아니다. A composite coating film manufactured including polycarbonate having a thickness in the above range may be preferred in the ID card manufacturing method because it can have excellent position recognition, but this is limited unless it impairs the physical properties of the composite coating film being manufactured. It's not like that.
일 구현예로서, 상기 복합 코팅필름은 25 ℃에서 24 시간 정치 후, 평면에 위치시켰을 때, 네모서리가 평면에 이격되는 거리의 평균 값(컬)이 6 ㎜ 이하일 수 있으며, 구체적으로는 5 ㎜이하, 더욱 구체적으로는 0.1 내지 3 ㎜일 수 있다.As an embodiment, when the composite coating film is placed on a flat surface after standing at 25°C for 24 hours, the average value (curl) of the distance between the four edges on the flat surface may be 6 mm or less, specifically 5 mm. Hereinafter, more specifically, it may be 0.1 to 3 mm.
상기 복합 코팅필름은 1 내지 5 ㎛의 매우 얇은 하드코팅으로 코팅됨으로써, 상기의 컬 범위를 가져, 이를 포함하는 ID 카드 제조방법은 보다 현저한 양산 적용이 가능할 수 있다.The composite coating film is coated with a very thin hard coating of 1 to 5 ㎛, so that it has the above curl range, and the ID card manufacturing method including this can be applied to more significant mass production.
일 구현예로서, 상기 복합 코팅필름은 ISO 2813로 측정한 광택도가 10 내지 30 %일 수 있으며, 구체적으로는 20 내지 30 %일 수 있다. As one embodiment, the composite coating film may have a glossiness of 10 to 30%, specifically 20 to 30%, as measured by ISO 2813.
상기 범위의 광택도를 가지는 복합 코팅필름은 ID 카드 제조방법에서 광학장비로 정위치를 인식하고 검사하는 장치에 현저한 호환이 가능하여, 우수한 공정성을 가질 수 있을 뿐 아니라, 제조된 ID 카드는 홀로그램 등의 보안요소 인식성이 매우 현저할 수 있다.A composite coating film with a gloss level in the above range is highly compatible with devices that recognize and inspect a specific position using optical equipment in the ID card manufacturing method, so not only can it have excellent fairness, but the manufactured ID card can also be made with holograms, etc. The recognition of security elements can be very noticeable.
이하 상기 복합 코팅필름을 포합하여 열압착하는 단계를 보다 상세히 설명한다.Hereinafter, the step of combining and heat-compressing the composite coating film will be described in more detail.
일 구현예로서, 상기 적층체는 열가소성 필름을 1 내지 10 개로 적층한 것일 수 있다.As one embodiment, the laminate may be a laminate of 1 to 10 thermoplastic films.
상기 적층체는 열압착하여 기재가 되는 것일 수 있으며, 적층된 열가소성 필름의 개수를 조절하여 기재의 두께를 보다 용이하게 조절할 수 있다. 구체적으로 상기 적층체는 열가소성 필름을 3 내지 10 개로 적층한 것일 수 있으며, 더욱 구체적으로는 열가소성 필름을 5 내지 10로 적층한 것일 수 있으나, 제조되는 ID 카드의 물성을 저해하는 것이 아니라면 이를 제한하는 것은 아니다.The laminate may be formed into a substrate by thermocompression, and the thickness of the substrate can be more easily adjusted by adjusting the number of laminated thermoplastic films. Specifically, the laminate may be a laminate of 3 to 10 thermoplastic films, and more specifically, it may be a laminate of 5 to 10 thermoplastic films, but this is limited unless it impairs the physical properties of the ID card being manufactured. That is not the case.
상기 범위의 개수로 열가소성 필름을 적층한 적층체는 열압착 단계를 공정시산을 단축할 수 있고, 제조된 ID 카드의 내충격강도, 탄성율, 인장강도 및 신율 등의 기계적 물성이 우수할 수 있어 선호될 수 있다.A laminate in which thermoplastic films are laminated in the above range can shorten the process time for the heat compression step and is preferred because the manufactured ID card can have excellent mechanical properties such as impact resistance, elastic modulus, tensile strength, and elongation. You can.
일 구현예로서, 상기 적층체의 열가소성 필름은 열압착이 가능한 것이라면 이를 제하는 것은 아니나, 일예로서, 폴리카보네이트(Polycarbonate), 폴리프로필렌(Polypropylene), 폴리비닐 클로라이드(Polyvinylchloride) 및 아크릴로니트릴-부타디엔-스티렌(ABS, Acrylonitrile-Butadiene-Styrene) 등에서 선택되는 어느 하나의 필름일 수 있다. 구체적으로 상기 열가소성 필름을 복합 코팅필름과 동일한 수지인 폴리카보네이트 단독으로 포함하는 것이 우수한 열압착 공정성을 가질 수 있으며, 제조되는 ID 카드가 우수한 합지성을 가질 수 있어 선호될 수 있으나, 이를 제한하는 것은 아니다.In one embodiment, the thermoplastic film of the laminate is not excluded as long as it can be heat-compressed, but examples include polycarbonate, polypropylene, polyvinylchloride, and acrylonitrile-butadiene. -It may be any film selected from styrene (ABS, Acrylonitrile-Butadiene-Styrene). Specifically, it may be preferable to include the thermoplastic film solely as polycarbonate, which is the same resin as the composite coating film, because it can have excellent thermal compression process and the manufactured ID card can have excellent lamination properties, but this is not limited. no.
일 구현예로서, 상기 열가소성 필름의 두께는 30 내지 200 ㎛일 수 있으며, 구체적으로는 30 내지 150 ㎛, 더욱 구체적으로는 30 내지 100 ㎛일 수 있다. 상기 범위의 두께를 가지는 열가소성 필름을 적층한 적층체는 열압착 단계에서 공정성이 우수할 수 있어 선호될 수 있으나, 제조되는 ID 카드의 물성을 저해하는 것이 아니라면 이를 제한하는 것은 아니다.As an embodiment, the thickness of the thermoplastic film may be 30 to 200 ㎛, specifically 30 to 150 ㎛, and more specifically 30 to 100 ㎛. A laminate made of thermoplastic films having a thickness within the above range may be preferred because it may have excellent processability in the heat compression step, but this is not limited as long as it does not impair the physical properties of the ID card being manufactured.
일 구현예로서, 상기 열압착하는 단계는 적층체의 일면 또는 양면에 복합 코팅필름을 위치하여 열압착 하는 것일 수 있다.As an embodiment, the step of thermal compression may involve placing a composite coating film on one or both sides of the laminate and thermally compressing it.
상기 방법으로 적층체에 복합 코팅필름을 위치하여 제조된 ID 카드는 적층체의 열가소성 필름 및 복합 코팅필름의 폴리카보네이트가 열압착으로 합지되어 기재가 될 수 있으며, 기재의 일면 또는 양면에 하드코팅을 포함하는 ID 카드를 제조할 수 있다.The ID card manufactured by placing the composite coating film on the laminate using the above method can be a base material by lamination of the thermoplastic film of the laminate and the polycarbonate of the composite coating film by heat compression, and a hard coating on one or both sides of the base material. ID cards containing
일 구현예로서, 상기 열압착하는 단계는 순차적으로 가열압착 공정과 냉각압착 공정을 포함하는 것일 수 있다. As one embodiment, the heat compression step may sequentially include a heat compression process and a cold compression process.
상기 가열압착은 150 내지 250 ℃의 온도에서, 5 내지 50 bar의 압력으로 압착하는 것일 수 있으며, 좋게는 170 내지 230 ℃, 더욱 좋게는 170 내지 210 ℃에서 열압착하는 것일 수 있으며, 상기 범위의 온도로 열압착안 ID 카드는 폴리카보네이트 필름의 광학적 특성, 기계적 특성 및 열적 특성을 저해하지 않을 수 있어 선호될 수 있다.The heat compression may be performed at a temperature of 150 to 250°C and a pressure of 5 to 50 bar, preferably at 170 to 230°C, more preferably at 170 to 210°C, and within the above range. Temperature-pressed ID cards may be preferred because they may not compromise the optical, mechanical, and thermal properties of the polycarbonate film.
또한 구체적으로 상기 가열압착은 압력은 5 내지 40 bar, 좋게는 5 내지 30 bar일 수 있으며, 상기 범위의 압력으로 열압착한 ID 카드는 포함된 폴리카보네이트 결정성을 유지할 수 있어 선호될 수 있다. Additionally, specifically, the pressure for the heat compression may be 5 to 40 bar, preferably 5 to 30 bar, and ID cards heat compression at a pressure in the above range may be preferred because they can maintain the crystallinity of the polycarbonate contained therein.
상기 냉각압착은 5 내지 30 ℃의 온도에서, 30 내지 100 bar의 압력으로 압착하는 공정으로서, 구체적으로는 상온의 온도에서 50 내지 100 bar, 좋게는 70 내지 100 bar의 압력으로 냉각 압착되는 것이, 제조된 ID 카드의 하드코팅이 이격되는 것을 방지할 수 있다.The cold pressing is a process of pressing at a temperature of 5 to 30 ° C. and a pressure of 30 to 100 bar. Specifically, the cold pressing is performed at a temperature of 5 to 30 ° C. and a pressure of 50 to 100 bar, preferably 70 to 100 bar, It can prevent the hard coating of manufactured ID cards from separating.
이하 본 발명의 ID 카드에 대해서 보다 상세히 설명한다.Hereinafter, the ID card of the present invention will be described in more detail.
본 발명의 ID 카드는 기재 및 상기 기재 일면 또는 양면에 1 내지 5 ㎛의 두께의 하드코팅을 포함한다. The ID card of the present invention includes a substrate and a hard coating with a thickness of 1 to 5 μm on one or both sides of the substrate.
일 구현예로서, 상기 하드코팅은 두께가 2 내지 3 ㎛ 두께일 수 있으며, 구체적으로는 2.5 내지 3 ㎛일 수 있다.As one embodiment, the hard coating may have a thickness of 2 to 3 ㎛, specifically 2.5 to 3 ㎛.
상기 범위의 하드코팅을 포함하는 ID 카드는 상술한 바와 같이 우수한 ID 카드 제조 공정성을 가질 수 있으며, 하드코팅이 함침되어 코팅되어 상기 범위의 두께를 가져도 우수한 접착력을 가져, 장기간 우수한 내스크래치성 및 내화학성을 가질 수 있다. 또한 상기 범위의 두께를 가지는 하드코팅을 포함하는 ID 카드는 하드코팅이 이격되는 현상(컬 발생)을 방지할 수 있어 선호될 수 있다.An ID card containing a hard coating in the above range can have excellent ID card manufacturing processability as described above, and has excellent adhesion even if the hard coating is impregnated and coated and has a thickness in the above range, and has excellent long-term scratch resistance and Can have chemical resistance. Additionally, an ID card containing a hard coating having a thickness within the above range may be preferred because it can prevent the hard coating from separating (curling).
일 구현예로서, 상기 기재는 두께가 300 내지 2,000 ㎛일 수 있으며, 구체적으로는 300 내지 1,500 ㎛일 수 있다. 상기 기재의 두께는 ID 카드 제조방법에서 열가소성 필름이 적층된 개수 및 두께와 복합 코팅필름의 두께에 따라 이를 조절할 수 있으며, 상기 범위의 두께를 가지는 기재를 포함하는 ID 카드는 우수한 기계적 물성을 가지는 측면에서 선호될 수 있으나, 이를 제한하는 것은 아니다.As an embodiment, the substrate may have a thickness of 300 to 2,000 ㎛, specifically 300 to 1,500 ㎛. The thickness of the substrate can be adjusted according to the number and thickness of thermoplastic films laminated in the ID card manufacturing method and the thickness of the composite coating film, and an ID card containing a substrate having a thickness within the above range has excellent mechanical properties. may be preferred, but is not limited to this.
이하 상기 ID 카드의 물성에 대해서 보다 상세히 설명한다.Hereinafter, the physical properties of the ID card will be described in more detail.
일 구현예로서, 상기 ID 카드는 ASTM E313로 측정한 황변성이 5 % 이하, 좋게는 3 % 이하, 더욱 좋게는 2 % 이하일 수 있으며, 하한을 한정하는 것은 아니나, 0.5 % 이상일 수 있다. As an embodiment, the ID card may have a yellowing property of 5% or less, preferably 3% or less, and more preferably 2% or less, as measured by ASTM E313. The lower limit is not limited, but may be 0.5% or more.
상기 범위의 황변성을 구현하는 ID 카드는 폴리카보네이트 가진 내후성 및 내화학성 문제를 해결할 수 있음으로써 자외선, 습도 및 유기용매에 장시간 노출되어도 광학적 물성을 저하되지 않을 수 있다.ID cards that achieve yellowing in the above range can solve the weather resistance and chemical resistance problems of polycarbonate, so that optical properties do not deteriorate even when exposed to ultraviolet rays, humidity, and organic solvents for a long time.
일 구현예로서, 상기 ID 카드는 ISO 15184로 측정한 표면 연필경도가 HB 이상, 좋게는 H 이상, 더욱 좋게는 2H 이상일 수 있으며, 상한을 제한하는 것은 아니나, 4H 이하, 3H이하일 수 있다.As an embodiment, the ID card may have a surface pencil hardness measured by ISO 15184 of HB or higher, preferably H or higher, and more preferably 2H or higher. The upper limit is not limited, but may be 4H or lower and 3H or lower.
상기 범위의 연필경도를 가진 ID 카드는 우수한 공정성을 가지기 위해서, 1 내지 5 ㎛ 두께의 하드코팅을 포함하여도, 하드코팅이 함침되어 코팅되어 있음으로써, 10 내지 50 ㎛ 두께의 하드코팅을 포함하는 종래의 ID 카드와 동일, 더 나아가더욱 우수한 표면경도 및 내스크래치성을 가질 수 있다.In order to have excellent fairness, the ID card with pencil hardness in the above range may include a hard coating with a thickness of 1 to 5 ㎛, but the hard coating is impregnated and coated, so that it includes a hard coating with a thickness of 10 to 50 ㎛. It can have the same, but even better, surface hardness and scratch resistance than conventional ID cards.
또 다른 일예로서, 상기 ID 카드는 ISO 11502를 의거하여, 스틸 울을 장착하고 750 g의 하중에서 5 회 왕복하여 측정된 스크래치가 10 개 이하일 수 있으며, 구체적으로는 7개 이하, 더욱 구체적으로는 5 개 이하일 수 있으며, 하한을 제한하는 것은 아니나, 1 개 이상, 2 개 이상일 수 있다.As another example, based on ISO 11502, the ID card may have 10 or less scratches, specifically, 7 or fewer scratches, as measured by mounting steel wool and reciprocating 5 times under a load of 750 g. There may be 5 or less. There is no lower limit, but there may be 1 or more or 2 or more.
상기 ID 카드의 스크래치 개수는 그 값이 적을수록 우수한 내스크래치성을 가지는 것을 의미하며, 하드코팅이 함침되어 코팅되어 나타나는 현상일 수 있다.The smaller the number of scratches on the ID card, the more excellent scratch resistance it has, and this may be a phenomenon that occurs when the hard coating is impregnated and coated.
즉, 상기 ID 카드 제조방법은 1 내지 5 ㎛ 얇은 두께의 하드코팅층을 포함하는 복합 코팅필름을 사용하여 현저한 공정성을 가질 뿐 아니라, 상기 복합 코팅필름의 하드코팅은 폴리카보네이트 필름에 함침되어 코팅되어 있음으로써, 제조된 ID 카드는 1 내지 5 ㎛ 두께의 하드코팅을 포함하여도 현저한 내스크래치성 및 내화학성을 가질 수 있다.In other words, the ID card manufacturing method not only has remarkable fairness by using a composite coating film containing a hard coating layer with a thin thickness of 1 to 5 ㎛, but also the hard coating of the composite coating film is coated by impregnating a polycarbonate film. As a result, the manufactured ID card can have remarkable scratch resistance and chemical resistance even if it includes a hard coating with a thickness of 1 to 5 ㎛.
일 구현예로서, 상기 ID 카드는　ISO 2409로 측정된 크로스 커팅 등급이 2 내지 5일 수 있다. In one embodiment, the ID card may have a cross cutting grade of 2 to 5 as measured by ISO 2409.
상기 크로스 커팅을 가는 ID 카드는 하드코팅이 함침되어 코팅되어 우수한 코팅부착력을 가질 수 있으며, 이는 스크래치로 인하여 하드코팅이 떨어지는 현상을 방지하여 장기간 사용하여도 우수한 외관 및 보안요소의 손상을 방지할 수 있다.The ID card that goes through the cross cutting can be coated with an impregnated hard coating to have excellent coating adhesion. This prevents the hard coating from falling off due to scratches, providing excellent appearance and preventing damage to security elements even after long-term use. there is.
이하 실시예를 통해 본 발명에 따른 ID 카드 제조방법과 제조된 ID 카드에 대하여 더욱 상세히 설명한다. 다만 하기 실시예는 본 발명을 상세히 설명하기 위한 하나의 참조일 뿐 본 발명이 이에 한정되는 것은 아니며, 여러 형태로 구현될 수 있다. 또한 달리 정의되지 않은 한, 모든 기술적 용어 및 과학적 용어는 본 발명이 속하는 당업자 중 하나에 의해 일반적으로 이해되는 의미와 동일한 의미를 갖는다. 또한, 본 발명에서 설명에 사용되는 용어는 단지 특정 실시예를 효과적으로 기술하기 위함이고, 본 발명을 제한하는 것으로 의도되지 않는다.The ID card manufacturing method and the manufactured ID card according to the present invention will be described in more detail through examples below. However, the following examples are only a reference for explaining the present invention in detail, and the present invention is not limited thereto, and may be implemented in various forms. Additionally, unless otherwise defined, all technical and scientific terms have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention pertains. Additionally, the terms used in the description in the present invention are only intended to effectively describe specific embodiments and are not intended to limit the present invention.
[측정방법][measurement method]
1. 연필경도 측정 1. Pencil hardness measurement
ISO 15184를 의거하여 측정하였고, 샘플 상에 750 g 하중으로 연필을 압력을 가하여, 연필 경도를 측정하였다.Measurements were made according to ISO 15184, and pencil hardness was measured by pressing a pencil with a 750 g load on the sample.
2. 황변도 측정2. Yellowing degree measurement
ASTM E313을 의거하여 측정하였고, 초기 샘플을 분광측색계(HunterLab, agera)을 사용하여 색차 L 값(Yellow)을 측정하였고, 이 후 샘플을 내후성 시험기(ATLAS, Ci4000)에 100 시간 동안 정치하고, 상기 초기 샘플 색차 측정과 동일하게 색차 L 값(Yellow)을 측정하여 하기 식으로 계산하여 황변도을 나타내었다.Measurements were made based on ASTM E313, and the color difference L value (Yellow) of the initial sample was measured using a spectrophotometer (HunterLab, agera), and then the sample was left in a weathering tester (ATLAS, Ci4000) for 100 hours. The color difference L value (Yellow) was measured in the same manner as the initial sample color difference measurement, and the yellowing degree was calculated by the following equation.
Figure PCTKR2023016516-appb-img-000001
Figure PCTKR2023016516-appb-img-000001
3. 표면저항 측정3. Surface resistance measurement
IEC 60093을 의거하여 측정하였고, 샘플을 표면저항 측정기(Simco-Ion, Model ST-4)을 사용하여 측정하였다.Measurements were made based on IEC 60093, and samples were measured using a surface resistance meter (Simco-Ion, Model ST-4).
4. 크로스 커팅 측정(Cross-cut test)4. Cross-cut test
ISO 2409을 의거하여 측정하였고, 샘플을 크로스 커팅기(제조사 TQC)로 격자모양으로 스크래치하고, 격자 모양으로 스크래치 상에 측정용 테이프를 붙이고, 다시 때어내어, 소실되는 코팅을 확인하여 측정하였다.Measurements were made based on ISO 2409, and the sample was scratched into a grid shape with a cross cutter (manufacturer TQC), a measuring tape was attached to the scratches in a grid shape, it was removed again, and the coating that was lost was checked and measured.
5. 컬 측정(Curl test)5. Curl test
하기 실시예 및 비교예에서 제조된 복합코팅필름을 100×100 ㎜의 측정샘플로 제하였고, 제조된 측정샘플을 평판위에 온도 25 ℃, 상대습도 55 % 환경에서 24 시간 정치하였다. 24 시간 정치 후, 측정샘플의 4개의 모서리에 하드코팅이 이격된 거리를 측정하여 그 평균을 나타내었다.The composite coating film prepared in the following Examples and Comparative Examples was made into a measurement sample of 100 After standing for 24 hours, the distance between the hard coatings at the four corners of the measurement sample was measured and the average was expressed.
6. 광택도 측정(Gloss test) 6. Gloss test
ISO 2813 규격에 의거하여 IAPE Glossmeter를 사용하여 접촉광(25°, 60°, 85°)중 표준 광택인 60°를 사용하여 측정하였다.In accordance with ISO 2813 standards, the standard gloss of 60° was measured among contact light (25°, 60°, 85°) using an IAPE Glossmeter.
7. 투과율 측정7. Transmittance measurement
ASTM D1003을 의거하여 측정하였으며, 제조된 샘플을 5 ×5 cm 크기로 절편하여 측정시편을 제조하였다, 제조된 측정시편을 헤이즈 측정기에 넣고 555 ㎚ 파장의 빛으로 투과시키고 하기 식으로 계산하여 투과율을 측정하였다.Measurement was made based on ASTM D1003, and the prepared sample was cut into 5 × 5 cm sizes to prepare a measurement specimen. The prepared measurement specimen was placed in a haze meter and transmitted through light with a wavelength of 555 nm, and the transmittance was calculated by the following equation. Measured.
[식][ceremony]
투과율(%) = (측정시편 투과광/초기 조사광) × 100 Transmittance (%) = (Measurement specimen transmitted light/initial irradiated light) × 100
8. 표면 조도 측정(Surface Roughness test)8. Surface roughness test
ISO 4287를 이거하여 측정하였으며, 폴리카보네이트 필름을 KEYENCE VHX-7000 Digital Optical Microscope를 사용하여 Scale 100 내지 500 배율에서 표면 거칠기 측정 모드를 통해 측정하였다. Measurements were made using ISO 4287, and the polycarbonate film was measured using a KEYENCE VHX-7000 Digital Optical Microscope in surface roughness measurement mode at scale 100 to 500 magnification.
복합 코팅필름 제조Composite coating film manufacturing
[제조예 1 내지 6][Production Examples 1 to 6]
제조된 하드코팅 조성물을 KCC사의 KUV-30000 99.7 중량%와 실리카퓸 0.3 중량%를 포함한 하드코팅 조성물을 제조하였다. 두께 100 ㎛의 폴리카보네이트 필름(에스폴리텍 사)를 상기의 표면조도 측정방법으로 측정하여 하기 표 1에 나타내었다. 이후 두께 100 ㎛의 폴리카보네이트 필름(에스폴리텍 사) 일면에 상기 하드코팅 조성물을 바(Bar)코팅방법을 통해 코팅하였다. 하드코팅 조성물이 코팅된 폴리카보네이트 필름을 경화기(LZL-FL-200200-C, LICHTZEN 사)를 통해 730 mJ/㎠의 광량으로 1 초간 수행되었으며, 하드 코팅 조성물이 경한 하드코팅 두께가 하기 표 1에 나타난 두께로 제조하였다. A hard coating composition containing 99.7% by weight of KCC's KUV-30000 and 0.3% by weight of silica fume was prepared. The surface roughness of a polycarbonate film (S Polytech Co., Ltd.) with a thickness of 100 ㎛ was measured using the above-described surface roughness measurement method and is shown in Table 1 below. Afterwards, the hard coating composition was coated on one side of a 100 ㎛ thick polycarbonate film (S Polytech) using a bar coating method. The polycarbonate film coated with the hard coating composition was cured through a curing machine (LZL-FL-200200-C, LICHTZEN) for 1 second at a light intensity of 730 mJ/cm2, and the hard coating thickness of the hard coating composition is shown in Table 1 below. It was manufactured to the indicated thickness.
그 후, 제조된 복합 코팅필름을 상기 측정방법으로 측정하여 하기 표 1에 나타내었다.Afterwards, the prepared composite coating film was measured using the above measurement method and is shown in Table 1 below.
[제조예 7][Production Example 7]
상기 제조예 2에서 폴리카보네이트 필름을 두께 100 ㎛의 아이에스옵틱스사 폴리카보네이트 필름(평균 조도: 0.1 ㎛)을 사용한 것을 제외하고는 동일하게 복합 코팅필름을 제조하였다.A composite coating film was prepared in the same manner as in Preparation Example 2, except that a 100 ㎛ thick polycarbonate film manufactured by IS Optics (average roughness: 0.1 ㎛) was used as the polycarbonate film.
그 후, 제조된 복합 코팅필름을 상기 측정방법으로 측정하여 하기 표 1에 나타내었다.Afterwards, the prepared composite coating film was measured using the above measurement method and is shown in Table 1 below.
[제조예 8][Production Example 8]
상기 제조예 2에서 하드코팅 조성물에 실리카퓸을 포함하지 않는 것을 제외하고는 동일하게 복합 코팅필름을 제조하였다.A composite coating film was prepared in the same manner as in Preparation Example 2, except that silica fume was not included in the hard coating composition.
그 후, 제조된 복합 코팅필름을 상기 측정방법으로 측정하여 하기 표 1에 나타내었다.Afterwards, the prepared composite coating film was measured using the above measurement method and is shown in Table 1 below.
하드코팅 두께
(㎛)Hard coating thickness
(㎛) 		PC 필름 평균 조도
(㎛)PC film average illuminance
(㎛) 		실리카퓸
(중량%)Silica Fume
(weight%) 		투과율
(%)Transmittance
(%) 		광택도
(%)Glossiness
(%) 		이격된 거리
(㎜)distance apart
(㎜)
제조예 1Manufacturing Example 1 1One 55 0.30.3 8080 2222 2.22.2
제조예 2Production example 2 2.52.5 55 0.30.3 7979 2222 2.52.5
제조예 3Production example 3 55 55 0.30.3 7070 2828 4.54.5
제조예 4Production example 4 1010 55 0.30.3 6565 1919 7.87.8
제조예 5Production example 5 2020 55 0.30.3 4040 1818 10.810.8
제조예 6Production example 6 5050 55 0.30.3 3232 1717 11.311.3
제조예 7Production example 7 2.52.5 0.10.1 0.30.3 8080 2222 1.81.8
제조예 8Production example 8 2.52.5 55 -- 7878 3030 2.62.6
상기 표 1에서 제조예 1 내지 6을 보면, 하드코팅의 두께가 증가함에 따라서, 투과율 및 광택도가 감소하고, 복합 코팅필름의 컬(이격되는 거리)이 증가하는 것을 확인하였다.Looking at Preparation Examples 1 to 6 in Table 1, it was confirmed that as the thickness of the hard coating increased, transmittance and gloss decreased, and the curl (spacing distance) of the composite coating film increased.
이는 복합 코팅필름의 하드코팅 두께가 증가할수록, ID 카드 제조 공정상에서 정위치 인식성이 하락하고, 투과율이 감소하여 레이저를 조사하여 ID 카드의 각인이 낮아짐으로써, ID 카드를 제조하는 공정성이 낮아지는 것을 시사한다.This means that as the hard coating thickness of the composite coating film increases, the recognition of the correct position in the ID card manufacturing process decreases, and the transmittance decreases, lowering the imprint on the ID card by irradiating the laser, thereby lowering the fairness of manufacturing the ID card. suggests that
ID 카드 제조ID card manufacturing
[실시예 1 내지 5][Examples 1 to 5]
자동화 ID 카드 제조 장치를 사용하여, 두께 100 ㎛의 폴리카보네이트 필름(에스폴리텍 사)를 4 개 적층한 적층체 양면에 하기 표 2에 표시된 복합코팅필름을 배치한 후, 온도 180 ℃, 압력 35 bar 조건으로 20 분 동안 가열 압착하고, 상온에서 압력 90 bar로 25 분 동안 냉각 압착하여 ID 카드를 제조하였다.Using an automated ID card manufacturing device, the composite coating film shown in Table 2 below was placed on both sides of a laminate of four polycarbonate films (S Polytech) with a thickness of 100 ㎛, and then the temperature was 180 ℃ and the pressure was 35 bar. An ID card was manufactured by heat pressing for 20 minutes under these conditions and cold pressing for 25 minutes at room temperature and a pressure of 90 bar.
그 후, 제조된 ID 카드를 상기의 측정방법으로 측정하여 하기 표 3에 나타내었다.Afterwards, the manufactured ID card was measured using the above measurement method and is shown in Table 3 below.
[실시예 6][Example 6]
상기 실시예 1에서, 상온에서 압력 90 bar로 25 분 동안 냉각 압착 공정을 하지 않는 것을 제외하고는 동일하게 ID 카드를 제조하였다. An ID card was manufactured in the same manner as in Example 1, except that the cold pressing process was not performed at room temperature and a pressure of 90 bar for 25 minutes.
그 후, 제조된 ID 카드를 상기의 측정방법으로 측정하여 하기 표 3에 나타내었다.Afterwards, the manufactured ID card was measured using the above measurement method and is shown in Table 3 below.
[비교예 1][Comparative Example 1]
상기 실시예 1에서, 제조예 4의 복합 코팅필름을 사용한 것을 제외하고는 동일하게 ID 카드를 제조하였다. An ID card was manufactured in the same manner as in Example 1, except that the composite coating film of Preparation Example 4 was used.
그 후, 제조된 ID 카드를 상기의 측정방법으로 측정하여 하기 표 3에 나타내었다.Afterwards, the manufactured ID card was measured using the above measurement method and is shown in Table 3 below.
[비교예 2][Comparative Example 2]
상기 실시예 1에서, 제조예 5의 복합 코팅필름을 사용한 것을 제외하고는 동일하게 ID 카드를 제조하였다. An ID card was manufactured in the same manner as in Example 1, except that the composite coating film of Preparation Example 5 was used.
그 후, 제조된 ID 카드를 상기의 측정방법으로 측정하여 하기 표 3에 나타내었다.Afterwards, the manufactured ID card was measured using the above measurement method and is shown in Table 3 below.
[비교예 3][Comparative Example 3]
상기 실시예 1에서, 제조예 6의 복합 코팅필름을 사용한 것을 제외하고는 동일하게 ID 카드를 제조하였다. An ID card was manufactured in the same manner as in Example 1, except that the composite coating film of Preparation Example 6 was used.
그 후, 제조된 ID 카드를 상기의 측정방법으로 측정하여 하기 표 3에 나타내었다.Afterwards, the manufactured ID card was measured using the above measurement method and is shown in Table 3 below.
[비교예 3][Comparative Example 3]
상기 실시예 1에서, 복합 코팅필름을 포함하지 않은 것을 제외하고는 동일하게 ID 카드를 제조하였다.An ID card was manufactured in the same manner as in Example 1, except that the composite coating film was not included.
그 후, 제조된 ID 카드를 상기의 측정방법으로 측정하여 하기 표 3에 나타내었다.Afterwards, the manufactured ID card was measured using the above measurement method and is shown in Table 3 below.
복합 코팅필름 Composite coating film 하드코팅 두께
(㎛)Hard coating thickness
(㎛) 		PC 필름 평균 조도
(㎛)PC film average illuminance
(㎛) 		하드코팅 조성물Hard coating composition 압착공정Compression process
실시예 1Example 1 제조예 1Manufacturing Example 1 1One 55 KUV-3000(KCC사) 및 실리카퓸KUV-3000 (KCC) and silica fume (1) 가열압착: 180 ℃, 35 bar
(2) 냉각압착: 상온, 90 bar (1) Heat compression: 180 ℃, 35 bar
(2) Cold pressing: room temperature, 90 bar
실시예 2Example 2 제조예 2Production example 2 2.52.5 55 KUV-3000(KCC사) 및 실리카퓸KUV-3000 (KCC) and silica fume (1) 가열압착: 180 ℃, 35 bar (2) 냉각압착: 상온, 90 bar (1) Heat pressing: 180 ℃, 35 bar (2) Cold pressing: Room temperature, 90 bar
실시예 3Example 3 제조예 3Production example 3 55 55 KUV-3000(KCC사) 및 실리카퓸KUV-3000 (KCC) and silica fume (1) 가열압착: 180 ℃, 35 bar (2) 냉각압착: 상온, 90 bar (1) Heat pressing: 180 ℃, 35 bar (2) Cold pressing: Room temperature, 90 bar
실시예 4Example 4 제조예 7Production example 7 2.52.5 0.10.1 KUV-3000(KCC사) 및 실리카퓸KUV-3000 (KCC) and silica fume (1) 가열압착: 180 ℃, 35 bar (2) 냉각압착: 상온, 90 bar (1) Heat pressing: 180 ℃, 35 bar (2) Cold pressing: Room temperature, 90 bar
실시예 5Example 5 제조예 8Production example 8 2.52.5 55 KUV-3000(KCC사) KUV-3000 (KCC company) (1) 가열압착: 180 ℃, 35 bar (2) 냉각압착: 상온, 90 bar (1) Heat pressing: 180 ℃, 35 bar (2) Cold pressing: Room temperature, 90 bar
실시예 6Example 6 제조예 2Production example 2 2.52.5 55 KUV-3000(KCC사) 및 실리카퓸KUV-3000 (KCC) and silica fume (1) 가열압착: 180 ℃, 35 bar (1) Heat compression: 180 ℃, 35 bar
비교예 1Comparative Example 1 제조예 4Production example 4 1010 55 KUV-3000(KCC사) 및 실리카퓸KUV-3000 (KCC) and silica fume (1) 가열압착: 180 ℃, 35 bar (2) 냉각압착: 상온, 90 bar (1) Heat pressing: 180 ℃, 35 bar (2) Cold pressing: Room temperature, 90 bar
비교예 2Comparative Example 2 제조예 5Production example 5 2020 55 KUV-3000(KCC사) 및 실리카퓸KUV-3000 (KCC) and silica fume (1) 가열압착: 180 ℃, 35 bar (2) 냉각압착: 상온, 90 bar (1) Heat pressing: 180 ℃, 35 bar (2) Cold pressing: Room temperature, 90 bar
비교예 3Comparative Example 3 제조예 6Production example 6 5050 55 KUV-3000(KCC사) 실리카퓸KUV-3000 (KCC) Silica Fume (1) 가열압착: 180 ℃, 35 bar (2) 냉각압착: 상온, 90 bar (1) Heat pressing: 180 ℃, 35 bar (2) Cold pressing: Room temperature, 90 bar
비교예 4Comparative Example 4 -- -- -- -- (1) 가열압착: 180 ℃, 35 bar (2) 냉각압착: 상온, 90 bar (1) Heat pressing: 180 ℃, 35 bar (2) Cold pressing: Room temperature, 90 bar
연핑경도Yanping Road 황변도
(%)yellowing degree
(%) 		Cross-cut
(class)Cross-cut
(class) 		표면저항
(Ω/sq)surface resistance
(Ω/sq)
실시예 1Example 1 HBHB 44 22 1010 10 10
실시예 2Example 2 HH 33 22 1010 10 10
실시예 3Example 3 HH 22 22 1010 10 10
실시예 4Example 4 HBHB 55 55 1010 10 10
실시예 5Example 5 HH 33 22 1015 10 15
실시예 6Example 6 HH 44 44 1010 10 10
비교예 1Comparative Example 1 HH 22 1One 1010 10 10
비교예 2Comparative Example 2 2H2H 22 00 1010 10 10
비교예 3Comparative Example 3 3H3H 22 00 1010 10 10
비교예 4Comparative Example 4 BB 3838 -- 1016 10 16
실시예 1 내지 6의 ID 카드는 제조예 1 내지 3, 제조예 7 또는 제조예 8 복합 코팅필름을 포함하여 제조되는 것으로서, 표 1에 나타난 바와 같이, 매우 낮은 컬 및 우수한 투과율을 가짐으로 현저한 공정성을 가질 수 있을 뿐 아니라, 우수한 표면특성을 가진다. The ID cards of Examples 1 to 6 are manufactured including the composite coating film of Preparation Examples 1 to 3, Preparation Example 7 or Preparation Example 8, and, as shown in Table 1, have very low curl and excellent transmittance, resulting in remarkable fairness. Not only can it have , but it also has excellent surface properties.
이에 반해, 상기 표 3에서 비교예 1 내지 4를 보면 하드코팅 두께가 증가할수록 실시예 보다 내스크래치성이 증가하고, 황변도가 감소하나, 상기 표 1에서 확인한 바와 같이 컬발생이 증가하고 투과율이 증가하여, ID 카드 제조공정성이 매우 낮아지는 것을 확인하였다.On the other hand, looking at Comparative Examples 1 to 4 in Table 3, as the hard coating thickness increases, scratch resistance increases and yellowing decreases compared to the Examples, but as confirmed in Table 1, curl generation increases and transmittance decreases. As the number increased, it was confirmed that ID card manufacturing fairness became very low.
특히 상기 표 3에서, 비교예 4는 하드코팅을 포함하지 않은 ID 카드로 실시예 보다 매우 낮은 표면강도와 높은 황변도를 가지는 것을 확인하였다.In particular, in Table 3, Comparative Example 4 was confirmed to have a much lower surface strength and a higher degree of yellowing than the Example, which was an ID card that did not include a hard coating.
또한 상기 표 3에서 실시예 4를 보면 제조예 7의 복합 코팅필름을 사용하여 제조되는 것으로서, 제조예 7의 복합코팅필름은 평균조도가 0.1 ㎛의 폴리카보네이트 필름을 사용함으로 실시예 2보다 하드코팅의 접착력이 낮은 것을 확인하였다.In addition, looking at Example 4 in Table 3, it is manufactured using the composite coating film of Preparation Example 7. The composite coating film of Preparation Example 7 is harder than Example 2 by using a polycarbonate film with an average roughness of 0.1 ㎛. It was confirmed that the adhesive strength was low.
상기 표 3에서 실시예 5는 하드코팅 조성물에 실리카퓸을 포함하지 않고 제조된 제조예 8의 복합 코팅필름을 포함하여 제조된 ID 카드로 표면저항이 실시예 2보다 낮은 것을 확인하였다.In Table 3, Example 5 was an ID card manufactured including the composite coating film of Preparation Example 8, which was manufactured without silica fume in the hard coating composition, and it was confirmed that the surface resistance was lower than that of Example 2.
상기 표 3에서 실시예 6은 열압착하는 공정에서 냉각압착 단계를 생략하고 제조된 ID 카드로서, 실시예 2 보다 낮은 코팅부착력을 가지는 것으로 확인되었다.In Table 3, Example 6 is an ID card manufactured by omitting the cold pressing step in the heat pressing process, and was confirmed to have lower coating adhesion than Example 2.
따라서 본 발명의 ID 카드 제조방법은 하드코팅이 함침되어 1 내지 5 ㎛의 두께로 폴리카보네이트 필름에 코팅된 복합 코팅필름을 사용하여, 매우 현저한 공정성을 가질 수 있을 뿐 아니라, 우수한 크로스 컷팅 측정값을 가질 수 있다. Therefore, the ID card manufacturing method of the present invention uses a composite coating film impregnated with a hard coating and coated on a polycarbonate film to a thickness of 1 to 5 ㎛, and not only has very remarkable fairness, but also provides excellent cross-cutting measurement values. You can have it.
이상과 같이 본 발명에서는 특정된 사항들과 한정된 실시예에 의해 설명되었으나 이는 본 발명의 보다 전반적인 이해를 돕기 위해서 제공된 것일 뿐, 본 발명은 상기의 실시예에 한정되는 것은 아니며, 본 발명이 속하는 분야에서 통상의 지식을 가진 자라면 이러한 기재로부터 다양한 수정 및 변형이 가능하다.As described above, the present invention has been described with specific details and limited embodiments, but these are provided only to facilitate a more general understanding of the present invention, and the present invention is not limited to the above embodiments, and the field to which the present invention pertains is not limited to the above embodiments. Those skilled in the art can make various modifications and variations from this description.

Claims (15)

  1. 폴리카보네이트 필름 상에 하드코팅 조성물을 코팅 및 경화하여 1 내지 5 ㎛ 두께의 하드코팅을 포함하는 복합 코팅필름을 제조하는 단계; 및 Preparing a composite coating film including a hard coating with a thickness of 1 to 5 ㎛ by coating and curing a hard coating composition on a polycarbonate film; and
    적층체 및 상기 복합 코팅필름을 포함하여 열압착하는 단계;를 포함하는 ID 카드 제조방법.An ID card manufacturing method comprising a step of thermally compressing a laminate and the composite coating film.
  2. 제1 항에 있어서,According to claim 1,
    상기 복합 코팅필름을 제조하는 단계;는 폴리카보네이트 필름의 골에 하드코팅 조성물이 함침되어 코팅되는 것인 ID 카드 제조방법.The step of manufacturing the composite coating film is an ID card manufacturing method in which the grooves of the polycarbonate film are impregnated and coated with a hard coating composition.
  3. 제2 항에 있어서,According to clause 2,
    상기 복합 코팅필름은 하기 식 1을 만족하는 것인 ID 카드 제조방법:An ID card manufacturing method wherein the composite coating film satisfies the following equation 1:
    [식 1][Equation 1]
    1.01 ≤ TH/T0 ≤ 1.15 1.01 ≤ T H /T 0 ≤ 1.15
    (상기 식 1에서,(In Equation 1 above,
    TH는 복합 코팅필름의 두께이며, T H is the thickness of the composite coating film,
    T0은 폴리카보네이트 필름 두께이다.) T 0 is the polycarbonate film thickness.)
  4. 제1 항에 있어서,According to claim 1,
    상기 폴리카보네이트 필름은 ISO 4287로 측정한 평균조도가 1 내지 15 ㎛인 ID 카드 제조방법.The polycarbonate film has an average roughness of 1 to 15 ㎛ as measured by ISO 4287.
  5. 제1 항에 있어서,According to claim 1,
    상기 복합 코팅필름은 25 ℃에서 24 시간 정치 후, 평면에 위치시켰을 때, 네모서리가 평면에 이격되는 거리의 평균 값이 6 ㎜ 이하인 ID 카드 제조방법. An ID card manufacturing method wherein, when the composite coating film is placed on a flat surface after standing at 25° C. for 24 hours, the average distance between the square edges on the flat surface is 6 mm or less.
  6. 제1 항에 있어서,According to claim 1,
    상기 복합 코팅필름은 ISO 2813로 측정한 광택도가 10 내지 30 %인 ID 카드 제조방법. An ID card manufacturing method wherein the composite coating film has a gloss of 10 to 30% as measured by ISO 2813.
  7. 제1 항에 있어서,According to claim 1,
    상기 하드코팅 조성물은 다공성 입자 0.1 내지 0.3 중량%를 포함하는 것인 ID 카드 제조방법.An ID card manufacturing method wherein the hard coating composition contains 0.1 to 0.3% by weight of porous particles.
  8. 제1 항에 있어서,According to claim 1,
    상기 하드코팅 조성물은 주제, 가교제 및 개시제를 포함하는 것인　ID 카드 제조방법.An ID card manufacturing method wherein the hard coating composition includes a base material, a crosslinking agent, and an initiator.
  9. 제1 항에 있어서,According to claim 1,
    상기 적층체는 열가소성 필름을 1 내지 10 개로 적층한 것인 ID 카드 제조방법.An ID card manufacturing method wherein the laminate is made by stacking 1 to 10 thermoplastic films.
  10. 제1 항에 있어서,According to claim 1,
    상기 열압착하는 단계;는 순차적으로 가열압착 공정과 냉각압착 공정을 포함하는 것인 ID 카드 제조방법:The heat compression step includes a heat compression process and a cold compression process sequentially. An ID card manufacturing method:
    (1) 가열압착: 150 내지 250 ℃의 온도에서, 5 내지 50 bar의 압력으로 압착,(1) Heat compression: Compression at a temperature of 150 to 250 ° C. and a pressure of 5 to 50 bar,
    (2) 냉각압착: 5 내지 30 ℃의 온도에서, 30 내지 100 bar의 압력으로 압착.(2) Cold pressing: Compressing at a temperature of 5 to 30° C. and a pressure of 30 to 100 bar.
  11. 제1 항에 있어서,According to claim 1,
    상기 ID 카드 제조방법은 레이저를 조사하여 각인하는 공정을 더 포함하는 것인 ID 카드 제조방법. The ID card manufacturing method further includes a process of engraving by irradiating a laser.
  12. 기재; 및write; and
    상기 기재; 일면 또는 양면에 1 내지 5 ㎛ 두께 하드코팅;을 포함하는 ID 카드. The above description; An ID card comprising a 1 to 5 ㎛ thick hard coating on one or both sides.
  13. 제12 항에 있어서,According to claim 12,
    상기 하드코팅은 두께가 2 내지 3 ㎛인 ID 카드.The hard coating is an ID card with a thickness of 2 to 3 ㎛.
  14. 제12 항에 있어서,According to claim 12,
    상기 ID 카드는 ASTM E313로 측정한 황변성이 5 % 이하인 ID 카드.The ID card has a yellowing rate of 5% or less as measured by ASTM E313.
  15. 제12 항에 있어서,According to claim 12,
    상기 ID 카드는 ISO 15184로 측정한 표면 연필경도가 HB 이상인 ID 카드.The ID card has a surface pencil hardness of HB or higher as measured by ISO 15184.
PCT/KR2023/016516 2022-11-15 2023-10-24 Id card manufacturing method and id card comprising hard coating WO2024106785A1 (en)

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KR10-2022-0152702 2022-11-15
KR1020220152702A KR20240074968A (en) 2022-11-15 2022-11-15 Electronic passport and ID card with excellent scratch resistance

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20180025866A (en) * 2015-06-24 2018-03-09 삼성전자주식회사 Hard Coating Film for Display Device and Display Device Including the Same
JP2019524480A (en) * 2017-04-25 2019-09-05 カナトゥ オイ Method for producing a laminated film
KR20210019027A (en) * 2018-06-08 2021-02-19 미쯔비시 케미컬 주식회사 Polycarbonate resin composition, molded article, laminate
KR20220001117A (en) * 2020-06-29 2022-01-05 한국조폐공사 ID Card with improved protective coating layer and method for manufacturing same
KR20220141204A (en) * 2021-04-12 2022-10-19 한국조폐공사 Manufacturing method for ID card

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100385931B1 (en) 2001-03-16 2003-06-02 (주)누리셀 A Method for Coating Parylene Polymer Film on Plastic Card and its Coating Apparatus

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20180025866A (en) * 2015-06-24 2018-03-09 삼성전자주식회사 Hard Coating Film for Display Device and Display Device Including the Same
JP2019524480A (en) * 2017-04-25 2019-09-05 カナトゥ オイ Method for producing a laminated film
KR20210019027A (en) * 2018-06-08 2021-02-19 미쯔비시 케미컬 주식회사 Polycarbonate resin composition, molded article, laminate
KR20220001117A (en) * 2020-06-29 2022-01-05 한국조폐공사 ID Card with improved protective coating layer and method for manufacturing same
KR20220141204A (en) * 2021-04-12 2022-10-19 한국조폐공사 Manufacturing method for ID card

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