WO2024167082A1 - Film à double motif sans substrat et son procédé de préparation - Google Patents

Film à double motif sans substrat et son procédé de préparation Download PDF

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Publication number
WO2024167082A1
WO2024167082A1 PCT/KR2023/014059 KR2023014059W WO2024167082A1 WO 2024167082 A1 WO2024167082 A1 WO 2024167082A1 KR 2023014059 W KR2023014059 W KR 2023014059W WO 2024167082 A1 WO2024167082 A1 WO 2024167082A1
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WIPO (PCT)
Prior art keywords
layer
pattern film
double
double pattern
film layer
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Application number
PCT/KR2023/014059
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English (en)
Korean (ko)
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문제희
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문제희
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Publication date
Application filed by 문제희 filed Critical 문제희
Publication of WO2024167082A1 publication Critical patent/WO2024167082A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/42—Moulds or cores; Details thereof or accessories therefor characterised by the shape of the moulding surface, e.g. ribs or grooves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/16—Making multilayered or multicoloured articles
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/18—Manufacture of films or sheets
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
    • C08J7/04—Coating
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
    • C23C14/22—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the process of coating
    • C23C14/24—Vacuum evaporation

Definitions

  • the present invention relates to an inorganic double pattern film and a manufacturing method thereof, and more specifically, to an inorganic double pattern film having excellent lamination strength, which excludes the use of a base substrate in a film used for surface treatment of a plastic product, and easily forms various patterns by a double pattern film layer made of UV resin.
  • cases or covers that make up the appearance of various products are elements that express the aesthetics of the product and provide differentiation from other products, and can reflect the latest design trends according to consumer preferences, so the surface treatment technology for cases or covers is also becoming increasingly important.
  • Most electronic product cases such as smartphones, tablet PCs, TVs, and refrigerators, and automobile dashboards, are manufactured using synthetic resin injection molding materials such as plastic.
  • synthetic resin injection molding materials such as plastic.
  • surface treatment methods for these plastic products such as painting, plating, vacuum deposition, and film transfer.
  • Paint is a treatment method that forms a coating film on the surface of a product by spraying paint solvent onto the surface of the product. It has the advantage of free color selection and easy workability, but has the disadvantage of poor wear resistance and requiring additional treatment to form texture.
  • Plating is a surface treatment method that forms a metal film on the surface of a product to create a metallic luster or texture, which improves wear resistance and corrosion resistance, but has the disadvantage of being cumbersome to apply to non-conductive plastic products and generating various harmful substances during the process.
  • Vacuum deposition is a surface treatment method that physically deposits a film to improve the shortcomings of electroplating.
  • a surface treatment method using vacuum deposition is applied.
  • the insert-in-mold method of surface treatment which supplies a film to a mold and injects resin to combine them into one piece.
  • Korean Patent Publication No. 10-2018-0082179 comprises a metal texture film including a transparent base film made of PET, a color UV paint layer laminated on one surface of the base film and including color, and a deposition layer deposited on one surface of the color UV paint layer.
  • Korean Patent Publication No. 10-2020-0055837 discloses a decoration film including a substrate layer made of PET, TPU, PBT, PP, PE, PVC, PMMA, ABS, PC, SAN or a combination thereof, a colored pattern layer positioned under the substrate layer, a colored or transparent coating layer positioned under the pattern layer, and a reflective layer positioned under the coating layer.
  • Korean Patent Publication No. 10-2010-0049797 discloses a film for attachment to a transparent panel of a home appliance to form an exterior, the film comprising: a substrate layer made of transparent PET; a printing layer having a design printed on one surface of the substrate layer using a gravure printing technique; an adhesive layer applied on the printing layer and containing a metal foil; and a background layer formed of an opaque synthetic resin, adhered to the adhesive layer, and promoting the color of the printing layer.
  • a film applied to surface treatment using the in-mold method according to a conventional technology is configured to form a substrate layer made of PET, a printing layer laminated on one surface of the substrate layer, a deposition layer on one surface of the printing layer, and an adhesive layer attached to the outer surface of an injection-molded product.
  • films having such a conventional plastic substrate as a base have a problem in that the thickness of the entire film increases due to the use of a hard plastic substrate, which significantly reduces adhesion to curved areas of an adherend and causes curling and peeling phenomena.
  • films using a conventional plastic substrate layer as a base have a problem in that when attached to thin flat plastic injection products without a frame shape, such as the back cover of a recent smartphone, the product warps due to the thickness and tension of the plastic substrate, which significantly reduces product quality and completeness.
  • GFRP glass fiber reinforced plastic
  • the present invention was invented to solve the problems of the prior art as described above.
  • It includes a shielding coating layer (150) that is coated on one side of the above printing layer (140) to shield the transparent surface,
  • the present invention provides an inorganic double pattern film having excellent lamination strength, which excludes the use of a base substrate in a film used for surface treatment of a plastic product and easily forms various patterns by a double pattern film layer made of UV resin.
  • the present invention has an advantage in that, compared to a film having a plastic substrate layer as a base used for surface treatment by conventional in-mold injection, the thickness of the entire film is significantly reduced, thereby significantly increasing the adhesion to corners or curved areas of an adherend and preventing curling and peeling phenomena, thereby reducing the defect rate.
  • the present invention enables easy implementation of a single pattern or a double pattern as needed by forming a double pattern using UV resin, thereby providing various aesthetics and three-dimensionality and greatly simplifying the pattern forming process.
  • the inorganic double-pattern film of the present invention can be easily applied to glass fiber reinforced plastic products, which were mostly surface treated by painting due to the complex process and low yield when using films having a plastic substrate layer as a base, by the insert-in-mold method, cost reduction and productivity improvement can be realized, and furthermore, the effect of enabling the use of GFRP products in various fields can be expected.
  • Figures 1 and 2 are schematic cross-sectional views of a double-patterned film without a weapon according to one embodiment of the present invention.
  • Figures 3 and 4 are schematic structural cross-sectional views of a double-pattern film without a material according to the second embodiment of the present invention.
  • Figure 5 is a process flow diagram of a method for manufacturing a double-patterned film without a weapon according to the present invention.
  • the inorganic double pattern film to which the technology of the present invention is applied and the manufacturing method thereof relate to an inorganic double pattern film having excellent lamination strength, which excludes the use of a base substrate in a film used for surface treatment of a plastic product and easily forms various patterns by a double pattern film layer made of UV resin.
  • the inorganic double pattern film (100) of the present invention is configured to include a double pattern film layer (120), a deposition layer (130), a printing layer (140), and a shielding coating layer (150), and is specifically as follows.
  • the above double pattern film layer (120) is molded by injecting UV resin into a UV pattern mold (21, 22).
  • the above double pattern film layer (120) is formed with UV resin having ultraviolet curing properties, and is provided for molding by injecting the UV resin into a UV pattern mold (21, 22).
  • the above UV pattern mold (21, 22) is made of PET material that forms a desired UV pattern on the inside, and one side of the UV pattern mold is peeled off after molding of the double pattern film layer (120), and the other side of the UV pattern mold is peeled off after injection molding of the final plastic product.
  • the double pattern film layer (120) of the present invention excludes a plastic substrate layer structure including a conventional PET.
  • the film applied to the conventional in-mold surface treatment has a plastic substrate layer as a base, which increases the thickness of the film and causes various problems accordingly. Therefore, in the present invention, the plastic substrate layer is completely excluded, and the double-pattern film layer (120) is formed using UV resin and then cured by ultraviolet rays to form a double-pattern structure.
  • the above double pattern film layer (120) is configured to include a three-dimensional pattern portion (121, 122) having a three-dimensional pattern and texture of a single or double structure.
  • the above three-dimensional pattern portion (121, 122) includes a single or composite pattern such as a hairline, spin, or hologram pattern, and the UV pattern mold (21, 22) is manufactured to have a UV pattern of the desired shape.
  • a single three-dimensional pattern portion (111) is formed on the double pattern film layer (120) to implement a pattern and a matte effect, and as in another embodiment of the present invention, three-dimensional pattern portions (121, 122) of different shapes are implemented on the double pattern film layer (120), so that a variety of three-dimensional effects can be expressed by the viewing angle and the reflection of light.
  • the above double pattern film layer (120) is configured to have a thickness of 5 to 50 ⁇ m to implement stable adhesion to a curved portion of an adherend and prevent warping of a thin flat plastic adherend without a border shape while improving product quality and completeness.
  • the above deposition layer (130) is provided by deposition on one surface of the double pattern film layer (120), and is formed by depositing a raw material such as aluminum, nickel, or silver.
  • the above deposition layer (130) is configured to further highlight the three-dimensional effect of the three-dimensional pattern portion (121, 122) by implementing a metal plating effect on the double pattern film layer (120).
  • the above printing layer (140) is provided by printing characters or patterns on one side of the above deposition layer (130).
  • the above printing layer (140) is formed by printing the desired characters or patterns using a printing device such as gravure, silk screen, or flexo.
  • the above shielding coating layer (150) is coated on one side of the above printing layer (140) to shield a transparent surface.
  • the above shielding coating layer (150) is configured to shield the transparent surface of the adherend by forming a background by coating opaque ink.
  • the inorganic double pattern film composed of the above double pattern film layer or shielding coating layer (120 to 150) is configured to be placed in-mold in a mold (31, 32) during injection molding of a plastic product and to be integrally bonded to the surface of the injection-molded product.
  • the above-mentioned non-woven double pattern film (100) is arranged on the surface of a plastic injection molded product to be integrally combined during injection molding, and is configured to form a three-dimensional pattern portion (121, 122) on the double pattern film layer (120) while excluding the conventional plastic substrate layer to perform surface treatment.
  • the adherend surface-treated by the inorganic double pattern film (100) comprising the double pattern film layer or shielding coating layer (120 to 150) according to the present invention is composed of a glass fiber reinforced plastic (GFRP) product.
  • GFRP glass fiber reinforced plastic
  • Glass fiber reinforced plastic is a plastic that is made by reinforcing glass fibers into unsaturated polyester to provide lightness, durability, impact resistance, and wear resistance.
  • the inorganic double pattern film according to the present invention forms a double pattern film layer (120) made of UV resin, excluding the use of a plastic substrate layer as in the past, thereby resolving the problem of having to perform an additional sanding process due to exposure of glass fibers during in-mold injection using a conventional film, and forms a variety of three-dimensional effects and textures that are different from surface treatment by simple painting, thereby achieving a luxurious surface treatment.
  • the inorganic double pattern film according to the present invention can be applied to the surface treatment of not only glass fiber reinforced plastic but also plastic products.
  • the method for manufacturing a double-patterned film of the present invention comprises a double-patterned film forming step (S10), a deposition layer forming step (S20), a printing layer forming step (S30), and a shielding coating layer forming step (S40).
  • the above double pattern film forming step (S10) molds a double pattern film layer (120) made of UV resin.
  • a plastic substrate layer structure including a conventional PET is excluded and a double pattern film layer (120) is formed using a UV pattern mold (21, 22).
  • the UV pattern mold (21, 22) used in the above double pattern film forming step (S10) is made of PET material that forms a desired UV pattern on the inside, and a UV resin is injected to form a double pattern film layer (120).
  • One side of the UV pattern mold is peeled off after forming the double pattern film layer (120), and the other side of the UV pattern mold is peeled off after injection molding of the final plastic product.
  • a single three-dimensional pattern portion (111) is formed on the double pattern film layer (120) to implement a pattern and a matte effect
  • the three-dimensional pattern portions (121, 122) of the double pattern film layer (120) are formed with different patterns from among various designs including different patterns, such as hairlines, spins, holograms, etc., thereby expressing a variety of three-dimensional effects by the viewing angle and the reflection of light, and expressing a luxurious texture without leaving fingerprints due to the matte pattern.
  • the double pattern film layer (120) is formed to a thickness of 5 to 50 ⁇ m. If the thickness range is exceeded, the adhesion to the curved portion of the adherend is significantly reduced, and a warping phenomenon occurs when a thin flat plastic adherend film without a border shape is attached, so the quality and completeness are improved by forming it to a thickness within the above range.
  • the double pattern film layer (120) formed by the above double pattern film forming step (S10) goes through a process of curing by irradiating it with a UV lamp.
  • the above deposition layer forming step (S20) laminates a deposition layer (130) on one surface of the double pattern film layer (120) formed in the above double pattern film forming step (S10).
  • deposition layer formation step (S20) aluminum, for example, is deposited on the double pattern film layer (120) using a vacuum deposition method to implement a metal plating effect, thereby further highlighting the three-dimensional effect of the three-dimensional pattern portion (121, 122).
  • the above printing layer forming step (S30) prints characters or patterns on one side of the deposition layer (130) formed in the deposition layer forming step (S20).
  • various characters or patterns such as the model name or logo of the injection-molded product, are printed on one side of the deposition layer (130) using a printing device such as gravure, silk screen, or flexo.
  • the above shielding coating layer forming step (S40) coats a shielding coating layer (150) on one side of the printing layer (140) formed in the printing layer forming step (S30) to shield the transparent surface.
  • shielding coating layer forming step (S40) opaque ink is coated on one side of the printing layer (140) to form a background, thereby shielding the transparent surface of the adherend.
  • the inorganic double pattern film (100) made of a double pattern film layer or a shielding coating layer (120 to 150) manufactured through the above-described series of steps of the present invention is arranged in a mold (31, 32) during injection molding of a plastic product so as to be integrally bonded to the surface of the injection-molded product.
  • the inorganic double pattern film and the manufacturing method thereof according to the present invention as described above are different from films having a plastic substrate layer as a base used for surface treatment by conventional in-mold injection, and provide an inorganic double pattern film having excellent product bonding strength while forming various patterns using only the double pattern film without using a base substrate.
  • the present invention has the advantage of significantly reducing the thickness of the entire film, thereby significantly increasing the adhesion to corners or curved areas of an adherend, and preventing curling and peeling phenomena, thereby reducing the defect rate.
  • the present invention enables easy implementation of a single pattern or a double pattern as needed by forming a double pattern by injecting UV resin into a mold, thereby providing various aesthetics and three-dimensionality and greatly simplifying the pattern forming process.
  • the present invention is expected to have great potential for industrial use since it can easily apply the inorganic double pattern film of the present invention to a glass fiber reinforced plastic product by an insert-in-mold method, thereby realizing cost reduction and productivity improvement, and further enabling the use of GFRP products in various fields.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Materials Engineering (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Metallurgy (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Inorganic Chemistry (AREA)
  • Laminated Bodies (AREA)

Abstract

La présente invention concerne un film à double motif sans substrat et son procédé de préparation, le film à double motif sans substrat comprenant : une couche de film à double motif (120) moulée par injection de résine UV dans des moules de formation de motifs UV (21, 22); une couche de dépôt (130) déposée sur un côté de la couche de film à double motif (120); une couche d'impression (140) pour imprimer des lettres ou des conceptions sur un côté de la couche de dépôt (130); et une couche de revêtement de protection (150) revêtue sur un côté de la couche d'impression (140) pour protéger une surface transparente. La couche de film à double motif (120) exclue une structure de couche de substrat en plastique comprenant du PET typique, et est conçue pour comprendre des unités de motif tridimensionnel (121, 122) comportant des motifs tridimensionnels présentant une structure simple ou double et des textures. Par conséquent, en raison de la couche de film à double motif qui écarte l'utilisation d'un substrat en plastique et qui est constituée de résine UV, divers motifs peuvent être formés facilement, ce qui permet d'obtenir un film à double motif sans substrat présentant une excellente résistance à la stratification.
PCT/KR2023/014059 2023-02-07 2023-09-18 Film à double motif sans substrat et son procédé de préparation WO2024167082A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2023-0016063 2023-02-07
KR1020230016063A KR102547363B1 (ko) 2023-02-07 2023-02-07 무기재 이중패턴필름 및 그 제조방법

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WO2024167082A1 true WO2024167082A1 (fr) 2024-08-15

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KR102547363B1 (ko) * 2023-02-07 2023-06-22 문제희 무기재 이중패턴필름 및 그 제조방법

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