WO2024080188A1 - 積層体の製造方法及び積層体の製造装置 - Google Patents
積層体の製造方法及び積層体の製造装置 Download PDFInfo
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- WO2024080188A1 WO2024080188A1 PCT/JP2023/036053 JP2023036053W WO2024080188A1 WO 2024080188 A1 WO2024080188 A1 WO 2024080188A1 JP 2023036053 W JP2023036053 W JP 2023036053W WO 2024080188 A1 WO2024080188 A1 WO 2024080188A1
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- pressing tool
- substrate
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- pressing
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- 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
- B32B37/0007—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding involving treatment or provisions in order to avoid deformation or air inclusion, e.g. to improve surface quality
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- 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
- B32B38/18—Handling of layers or the laminate
- B32B38/1825—Handling of layers or the laminate characterised by the control or constructional features of devices for tensioning, stretching or registration
- B32B38/1833—Positioning, e.g. registration or centering
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
- G02B1/11—Anti-reflection coatings
- G02B1/113—Anti-reflection coatings using inorganic layer materials only
- G02B1/115—Multilayers
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
- G02B1/14—Protective coatings, e.g. hard coatings
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
- G02B1/18—Coatings for keeping optical surfaces clean, e.g. hydrophobic or photo-catalytic films
-
- 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
- B32B2457/00—Electrical equipment
- B32B2457/20—Displays, e.g. liquid crystal displays, plasma displays
-
- 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
- B32B37/0007—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding involving treatment or provisions in order to avoid deformation or air inclusion, e.g. to improve surface quality
- B32B37/003—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding involving treatment or provisions in order to avoid deformation or air inclusion, e.g. to improve surface quality to avoid air inclusion
-
- 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
Definitions
- the present invention relates to a method for manufacturing a laminate and an apparatus for manufacturing a laminate.
- This application has priority to the contents described in Patent Application No. 2022-163216, filed in Japan on October 11, 2022.
- Anti-reflective films are used in a variety of applications. For example, they are attached to the monitor glass of in-vehicle LCD panels. Anti-reflective films are attached to substrates such as glass.
- Patent Document 1 describes a lamination device for laminating a sheet member to a long film member.
- cracks may occur in the laminated film when the pressing tool rides up against the edge of the substrate.
- the present disclosure has been made in consideration of the above problems, and provides a laminate manufacturing method and laminate manufacturing device that can suppress the occurrence of cracks during lamination.
- the present invention proposes the following:
- the method for manufacturing a laminate according to the first aspect includes a first step of pressing a laminate film having a base film and an inorganic layer laminated on the base film against a first intermediate point between a first end and a second end of a substrate using a pressing tool, and moving the pressing tool from the first intermediate point toward the first end while pressing the pressing tool against the laminate film; a second step of moving the pressing tool to a second intermediate point between the first end and the second end without pressing the pressing tool against the laminate film; and a third step of moving the pressing tool from the second intermediate point toward the second end while pressing the pressing tool against the laminate film.
- the second midpoint may coincide with the first midpoint.
- the second midpoint may be closer to the first end than the first midpoint.
- the second midpoint may be closer to the second end than the first midpoint.
- the bonding pressure between the laminate film and the substrate per unit time may be greater at the first midpoint than at the first end.
- the bonding pressure between the laminate film and the substrate per unit time may be greater at the second midpoint than at the second end.
- the substrate may have a non-constant width in a second direction perpendicular to a first direction connecting the first end and the second end, the first portion may have a shorter width in the second direction than the second portion, and the bonding pressure per unit time between the laminate film and the substrate may be smaller for the first portion than for the second portion.
- the pressing tool may have a first roller that contacts the laminate film and a second roller that contacts the substrate.
- the lamination pressure applied by the pressing tool to bond the laminate film and the substrate may be 0.1 MPa or more and 0.5 MPa or less.
- the laminate manufacturing apparatus includes a pressing tool that presses a laminate film having a base film and an inorganic layer laminated on the base film against a substrate, and a control unit that controls the relative position of the pressing tool and the substrate, and the control unit performs a first operation of pressing the laminate film against a first intermediate point between a first end and a second end of the substrate using the pressing tool and moving the pressing tool from the first intermediate point toward the first end while pressing the pressing tool against the laminate film, a second operation of moving the pressing tool to a second intermediate point between the first end and the second end without pressing the pressing tool against the laminate film, and a third operation of moving the pressing tool from the second intermediate point toward the second end while pressing the pressing tool against the laminate film.
- the laminate manufacturing method and laminate manufacturing device according to this embodiment can suppress the occurrence of cracks during lamination.
- FIG. 2 is a cross-sectional view of the laminated film according to the present embodiment.
- FIG. 2 is a cross-sectional view illustrating a first step in the method for manufacturing a laminate according to the embodiment.
- FIG. 2 is a plan view for explaining a first step in the method for manufacturing a laminate according to the embodiment.
- 4 is a cross-sectional view for explaining a second step in the method for manufacturing the laminate according to the embodiment.
- FIG. FIG. 4 is a cross-sectional view illustrating a third step in the method for manufacturing a laminate according to the embodiment.
- FIG. 11 is a plan view for explaining a third step in the method for manufacturing a laminate according to the embodiment.
- 13 is a plan view for explaining another example of the third step in the method for manufacturing a laminate according to the embodiment.
- FIG. 13 is a plan view for explaining another example of the third step in the method for manufacturing a laminate according to the embodiment.
- FIG. 13 is a plan view for explaining another example of the third step in
- the directions are defined.
- the direction in which the pressing tool 30 moves is called the first direction.
- the x direction is an example of the first direction.
- the direction perpendicular to the first direction is called the second direction.
- the y direction is an example of the second direction.
- the z direction is a direction perpendicular to the x and y directions. The z direction coincides with, for example, the direction in which pressure is applied when bonding the laminate film 10 and the substrate 20 together.
- Method of manufacturing laminate The method for producing a laminate according to this embodiment includes steps 1, 2, and 3.
- a laminate film 10 is bonded to a substrate 20 to produce a laminate composed of the laminate film 10 and the substrate 20.
- the substrate 20 is, for example, glass, plastic, etc.
- the bonding surface 20S of the substrate 20 to which the laminated film 10 is bonded may be flat or curved.
- the bonding surface 20S is curved, for example, in the z direction with respect to the x direction.
- the bonding surface 20S is curved so that the center of the x direction is convex in the +z or -z direction.
- the laminate film 10 used is, for example, one size larger than the bonding surface 20S of the substrate 20. After the laminate film 10 is bonded to the substrate 20, an excess portion of the laminate film 10 protrudes around the periphery of the substrate 20. The excess portion of the laminate film 10 is cut and removed in a later process.
- the laminated film 10 has a substrate film and an inorganic layer laminated on the substrate film.
- FIG. 1 is a cross-sectional view of the laminated film 10 according to this embodiment.
- the laminated film 10 shown in FIG. 1 has, for example, a release layer 1, an adhesive layer 2, a substrate film 3, a hard coat layer 4, an optically functional layer 5, an antifouling layer 6, and a protective layer 7.
- the optically functional layer 5 is an example of an inorganic layer.
- the release layer 1 is a layer that protects the adhesive layer 2.
- the release layer 1 is peeled off at the time of lamination, and the adhesive layer 2 that is exposed by peeling off the release layer 1 is adhered to the substrate 20.
- the release layer 1 is, for example, paper or film coated with a release agent.
- the thickness of the release layer 1 is, for example, 70 ⁇ m or more and 80 ⁇ m or less.
- the adhesive layer 2 is a layer that is adhered to the substrate 20.
- the adhesive layer 2 includes, for example, an acrylic adhesive, a silicone adhesive, or a urethane adhesive.
- the thickness of the adhesive layer 2 is, for example, 10 ⁇ m or more and 50 ⁇ m or less, and preferably 20 ⁇ m or more and 30 ⁇ m or less.
- the substrate film 3 is, for example, a plastic film.
- materials constituting the plastic film include polyester resins, acetate resins, polyethersulfone resins, polycarbonate resins, polyamide resins, polyimide resins, polyolefin resins, (meth)acrylic resins, polyvinyl chloride resins, polyvinylidene chloride resins, polystyrene resins, polyvinyl alcohol resins, polyarylate resins, and polyphenylene sulfide resins.
- the base film 3 is, for example, a polyester-based resin, an acetate-based resin, a polycarbonate-based resin, or a polyolefin-based resin.
- a polyethylene terephthalate (PET) base material or a triacetyl cellulose (TAC) base material is preferably used as the base film 3.
- the thickness of the base film 3 is, for example, 60 ⁇ m or more. If the thickness of the base film 3 is thin, cracks may occur in the laminate film 10 due to bending of the film, etc.
- the thickness of the base film 3 is, for example, 1 mm or less, preferably 500 ⁇ m or less, and more preferably 300 ⁇ m or less. If the thickness of the base film 3 is too thick, the transparency of the base film 3 decreases and the rigidity increases, making it more susceptible to cracking.
- One surface of the base film 3 may be previously subjected to an etching treatment such as sputtering, corona discharge, ultraviolet irradiation, electron beam irradiation, conversion, oxidation, and/or an undercoat treatment.
- an etching treatment such as sputtering, corona discharge, ultraviolet irradiation, electron beam irradiation, conversion, oxidation, and/or an undercoat treatment.
- the hard coat layer 4 is formed on one side of the base film 3.
- the hard coat layer 4 is not particularly limited, and a known hard coat layer can be used.
- the hard coat layer 4 may contain, for example, a binder resin and a filler.
- the hard coat layer 4 may also contain a leveling agent.
- the binder resin is preferably transparent, and is, for example, an ionizing radiation curable resin that is cured by ultraviolet light or electron beams, a thermoplastic resin, or a thermosetting resin.
- ionizing radiation curable resins that are binder resins include ethyl (meth)acrylate, ethylhexyl (meth)acrylate, styrene, methylstyrene, and N-vinylpyrrolidone.
- the ionizing radiation curable resin may also be a compound having two or more unsaturated bonds.
- ionizing radiation curable resins having two or more unsaturated bonds include trimethylolpropane tri(meth)acrylate, tripropylene glycol di(meth)acrylate, diethylene glycol di(meth)acrylate, dipropylene glycol di(meth)acrylate, pentaerythritol tri(meth)acrylate, pentaerythritol tetra(meth)acrylate, dipentaerythritol hexa(meth)acrylate, 1,6-hexanediol di(meth)acrylate, neopentyl glycol di(meth)acrylate, trimethylolpropane tri(meth)acrylate, ditrimethylolpropane tetra(meth)acrylate, dipentaerythritol ...
- tetrapentaerythritol penta(meth)acrylate tripentaerythritol octa(meth)acrylate, tetrapentaerythritol deca(meth)acrylate
- isocyanuric acid tri(meth)acrylate isocyanuric acid di(meth)acrylate
- polyester tri(meth)acrylate polyester di(meth)acrylate, bisphenol di(meth)acrylate, diglycerin tetra(meth)acrylate, adamantyl di(meth)acrylate, isobornyl di(meth)acrylate, dicyclopentane di(meth)acrylate, tricyclodecane di(meth)acrylate, and ditrimethylolpropane tetra(meth)acrylate.
- pentaerythritol triacrylate PETA
- dipentaerythritol hexaacrylate DPHA
- pentaerythritol tetraacrylate PETA
- (meth)acrylate refers to methacrylate and acrylate.
- the ionizing radiation curable resin may be one obtained by modifying the above-mentioned compounds with PO (propylene oxide), EO (ethylene oxide), CL (caprolactone), etc.
- the ionizing radiation curable resin is preferably an acrylic ultraviolet curable resin composition.
- thermoplastic resins that are binder resins include styrene-based resins, (meth)acrylic-based resins, vinyl acetate-based resins, vinyl ether-based resins, halogen-containing resins, alicyclic olefin-based resins, polycarbonate-based resins, polyester-based resins, polyamide-based resins, cellulose derivatives, silicone-based resins, and rubber or elastomers.
- the above-mentioned thermoplastic resins are non-crystalline and soluble in organic solvents (particularly common solvents that can dissolve multiple polymers and curable compounds).
- the binder resin is a styrene-based resin, a (meth)acrylic-based resin, an alicyclic olefin-based resin, a polyester-based resin, a cellulose derivative (cellulose esters, etc.), etc.
- thermosetting resin that is the binder resin may be, for example, a phenol resin, a urea resin, a diallyl phthalate resin, a melamine resin, a guanamine resin, an unsaturated polyester resin, a polyurethane resin, an epoxy resin, an aminoalkyd resin, a melamine-urea co-condensation resin, a silicon resin, a polysiloxane resin (including so-called silsesquioxanes such as cage-shaped and ladder-shaped ones), etc.
- the hard coat layer 4 may contain an organic resin and an inorganic material, or may be an organic-inorganic hybrid material.
- an organic resin and an inorganic material may be an organic-inorganic hybrid material.
- One example is one formed by the sol-gel method.
- inorganic materials include silica, alumina, zirconia, and titania.
- organic materials include acrylic resin.
- the filler may be made of an organic substance, an inorganic substance, or a mixture of organic and inorganic substances.
- Various fillers can be selected for the hard coat layer 4 according to the application of the laminate film 10, from the viewpoints of anti-glare properties, adhesion to the optical functional layer 5 described below, anti-blocking properties, etc.
- known fillers such as silica (oxide of silicon) particles, alumina (aluminum oxide) particles, and organic fine particles can be used as the filler.
- the average particle size of the filler is, for example, 800 nm or less, preferably 100 nm or less, and more preferably 40 nm or more and 70 nm or less.
- the average particle size of the organic fine particles is, for example, 10 ⁇ m or less, preferably 5 ⁇ m or less, and more preferably 3 ⁇ m or less.
- the thickness of the hard coat layer 4 is preferably, for example, 0.5 ⁇ m or more, and more preferably 1 ⁇ m or more.
- the thickness of the hard coat layer 4 is preferably 100 ⁇ m or less.
- the hard coat layer 4 may be made of a single layer, or may be made of a laminate of multiple layers.
- the optical function layer 5 is a layer that exhibits optical functions.
- Optical functions are functions that control the properties of light, such as reflection, transmission, and refraction, and examples of such functions include anti-reflection, selective reflection, anti-glare, and lens functions.
- the optical function layer 5 is, for example, a laminate film in which high-refractive index layers and low-refractive index layers are alternately laminated in this order from the hard coat layer 4 side.
- the high-refractive index layers have a higher refractive index than the low-refractive index layers.
- the refractive indices of the high-refractive index layers may be the same or different.
- the refractive indices of the low-refractive index layers may be the same or different.
- the total number of low-refractive index layers and high-refractive index layers in the optical functional layer 5 is not particularly limited.
- the number of layers may be four, three or less, or five or more.
- the total number of low-refractive index layers and high-refractive index layers in the optical functional layer 5 is preferably four to ten, more preferably four to six, and most preferably four.
- the optical functional layer 5 has four layers, the number of layers is small and the thickness is thin, so productivity is superior compared to when the number of layers is five or more.
- the optical function layer 5 exhibits an anti-reflection function by the interference of light reflected at each interface of the laminate in which high-refractive index layers and low-refractive index layers are alternately stacked, and by diffusing light incident from the anti-fouling layer 6 side.
- the total thickness of the optical function layer 5 is, for example, 100 ⁇ m or more and 800 ⁇ m or less.
- the optical function layer 5 is a laminate of four layers, namely, a first high refractive index layer 5A, a first low refractive index layer 5B, a second high refractive index layer 5C, and a second low refractive index layer 5D, stacked in that order from the side closest to the hard coat layer 4.
- the first high refractive index layer 5A and the second high refractive index layer 5C each have a higher refractive index than the first low refractive index layer 5B and the second low refractive index layer 5D, respectively.
- the refractive index of the first high refractive index layer 5A and the second high refractive index layer 5C is, for example, 2.00 or more and 2.60 or less, and preferably 2.10 or more and 2.45 or less.
- the refractive index of the first high refractive index layer 5A and the second high refractive index layer 5C may be the same or different.
- Examples of materials for the first high refractive index layer 5A and the second high refractive index layer 5C include niobium pentoxide (Nb 2 O 5 , refractive index 2.33), titanium oxide (TiO 2 , refractive index 2.33 to 2.55), tungsten oxide (WO 3 , refractive index 2.2), cerium oxide (CeO 2 , refractive index 2.2), tantalum pentoxide (Ta 2 O 5 , refractive index 2.16), zinc oxide (ZnO, refractive index 2.1), indium tin oxide (ITO, refractive index 2.06), and zirconium oxide (ZrO 2 , refractive index 2.2).
- the first high refractive index layer 5A and the second high refractive index layer 5C are preferably made of niobium pentoxide.
- the materials constituting the first high refractive index layer 5A and the second high refractive index layer 5C may be the same or different.
- the refractive index of the first low-refractive index layer 5B and the second low-refractive index layer 5D is, for example, 1.20 or more and 1.60 or less, and preferably 1.30 or more and 1.50 or less.
- the refractive index of the first low-refractive index layer 5B and the second low-refractive index layer 5D may be the same or different.
- the first low refractive index layer 5B and the second low refractive index layer 5D contain, for example, an oxide of Si.
- the first low refractive index layer 5B and the second low refractive index layer 5D are layers whose main component is, for example, SiO 2 (oxide of Si).
- the oxide of Si is easy to obtain and advantageous in terms of cost.
- the SiO 2 single layer film is colorless and transparent.
- the main component is a component that occupies 50 mass% or more of the components contained in the layer.
- the refractive indexes of the first low refractive index layer 5B and the second low refractive index layer 5D may be the same or different.
- first low-refractive index layer 5B and the second low-refractive index layer 5D are mainly composed of an oxide of Si, they may contain less than 50 mass% of another element.
- the content of the element other than the oxide of Si is preferably 10% or less.
- the other element is, for example, Na, Zr, Al, or N.
- Na increases the durability of the first low-refractive index layer 5B and the second low-refractive index layer 5D.
- Zr, Al, and N increase the hardness and alkali resistance of the first low-refractive index layer 5B and the second low-refractive index layer 5D.
- the anti-fouling layer 6 contacts the surface of the optical functional layer 5 opposite to the surface that contacts the hard coat layer 4.
- the anti-fouling layer 6 prevents the optical functional layer 5 from being soiled.
- the anti-fouling layer 6 also prevents the optical functional layer 5 from being worn down by the sliding of a pen when applied to a touch panel or the like.
- the anti-soiling layer 6 is, for example, a fluorine-based organic compound.
- the fluorine-based organic compound is, for example, a compound consisting of a fluorine-modified organic group and a reactive silyl group (e.g., alkoxysilane).
- Commercially available products that can be used for the anti-soiling layer 6 include Optool DSX (manufactured by Daikin Corporation) and the KY-100 series (manufactured by Shin-Etsu Chemical Co., Ltd.).
- the thickness of the antifouling layer 6 is, for example, 1 nm or more and 20 nm or less, and preferably 3 nm or more and 10 nm or less. If the thickness of the antifouling layer 6 is 1 nm or more, sufficient abrasion resistance can be ensured when the laminate is applied to touch panel applications, etc. Furthermore, if the thickness of the antifouling layer 6 is 20 nm or less, the time required for vapor deposition is short, allowing efficient production.
- the stain-resistant layer 6 may contain additives such as light stabilizers, ultraviolet absorbers, colorants, antistatic agents, lubricants, leveling agents, defoamers, antioxidants, flame retardants, infrared absorbers, and surfactants, as necessary.
- additives such as light stabilizers, ultraviolet absorbers, colorants, antistatic agents, lubricants, leveling agents, defoamers, antioxidants, flame retardants, infrared absorbers, and surfactants, as necessary.
- the protective layer 7 is a layer that protects the film during transportation and storage.
- Examples of the protective layer 7 include layers that use polypropylene, polyethylene, polyethylene terephthalate, or the like as a base material and have an adhesive layer whose main component is natural rubber, synthetic rubber, acrylic resin, or the like.
- FIG. 2 is a cross-sectional view for explaining the first step in the method for manufacturing a laminate according to this embodiment.
- FIG. 3 is a plan view for explaining the first step in the method for manufacturing a laminate according to this embodiment.
- the laminated film 10 is first pressed against the first intermediate point 23 of the substrate 20 using a pressing tool 30.
- the first intermediate point 23 is between the first end 21 and the second end 22 of the substrate 20 in the x direction.
- the first end 21 and the second end 22 are both ends of the substrate 20 in the x direction.
- the operation of the pressing tool 30 is controlled, for example, by the control unit 40.
- the control unit 40 has, for example, an operating mechanism that moves the pressing tool 30 relative to the substrate 20, and a processor that instructs the operation of the operating mechanism.
- the pressing tool 30 is not particularly limited as long as it can apply pressure in the thickness direction of the laminated film 10 and the substrate 20.
- the pressing tool 30 is, for example, a roller whose width in the y direction is wider than that of the substrate 20.
- the pressing tool 30 moves in the x direction.
- the pressing tool 30 is, for example, a lamination roller having a first roller 31 and a second roller 32.
- the first roller 31 contacts the laminated film 10 when pressing.
- the second roller 32 contacts the substrate 20 when pressing. Either the first roller 31 or the second roller 32 may be omitted.
- the lamination roller has the first roller 31 and the second roller 32, even if the lamination surface 20S of the substrate 20 is curved, the lamination roller can be moved along the lamination surface 20S to firmly laminate the laminated film 10 to the substrate 20.
- the lamination pressure with which the pressing tool 30 is pressed against the laminated film 10 or the substrate 20 is, for example, 0.1 MPa or more and 0.5 MPa or less, and preferably 0.3 MPa or more and 0.4 MPa or less.
- the pressing tool 30 may be stopped when it reaches the first end 21 from the first intermediate point 23.
- the pressing tool 30 may also proceed beyond the first end 21 in the travel direction (-x direction).
- the pressing tool 30 climbs up the step between the laminated film 10 and the substrate 20, cracks are likely to occur in the laminated film 10, but cracks are unlikely to occur when it descends the step, so there is no problem even if the pressing tool 30 proceeds beyond the first end 21 in the travel direction.
- the lamination pressure per unit time between the laminate film 10 and the substrate 20 may be different between the first intermediate point 23 and the first end 21.
- the lamination pressure per unit time between the laminate film 10 and the substrate 20 is the pressure per unit time at which the pressing tool 30 is pressed against the laminate film 10 or the substrate 20.
- the lamination pressure per unit time at the first intermediate point 23 may be greater than the lamination pressure per unit time at the first end 21.
- the lamination pressure per unit time between the laminated film 10 and the substrate 20 may be changed according to the width of the substrate 20 in the y direction.
- the lamination pressure per unit time is changed between the first portion 25 and the second portion 26.
- the width W25 in the y direction of the first portion 25 is narrower than the width W26 in the y direction of the second portion 26.
- the lamination pressure per unit time in the first portion 25 is made smaller than the lamination pressure per unit time in the second portion 26.
- the lamination pressure per unit time can be controlled by the moving speed of the pressing tool 30, the pressing pressure of the pressing tool 30, etc.
- the moving speed, pressing pressure, etc. of the pressing tool 30 can be controlled by the gap between the first roller 31 and the second roller 32 and the rotation speed of the first roller 31 and the second roller 32.
- FIG. 4 is a cross-sectional view illustrating the second step in the method for manufacturing a laminate according to this embodiment.
- the pressing tool 30 is moved to the second intermediate point 24 without being pressed against the laminated film 10.
- the operation of the pressing tool 30 is controlled, for example, by the control unit 40.
- the second intermediate point 24 is between the first end 21 and the second end 22 in the x direction. Details of the second intermediate point 24 will be described later.
- the pressing tool 30 is not pressed against the laminate film 10 means that no lamination pressure is being applied between the laminate film 10 and the substrate 20. If the pressing tool 30 is in contact with the laminate film 10 but no lamination pressure is being applied, it can be said that the pressing tool 30 is not pressed against the laminate film 10.
- the pressing tool 30 is separated from the laminate film 10 and the substrate 20.
- the first roller 31 is separated from the laminate film 10, and the second roller 32 is separated from the substrate 20.
- FIG. 5 is a cross-sectional view for explaining the third step in the method for manufacturing a laminate according to this embodiment.
- FIG. 6 is a plan view for explaining the third step in the method for manufacturing a laminate according to this embodiment.
- the pressing tool 30 is pressed against the laminated film 10 again.
- the pressing tool 30 is pressed against the second midpoint 24 of the substrate 20.
- the pressing tool 30 is moved from the second midpoint 24 toward the second end 22.
- the operation of the pressing tool 30 is controlled, for example, by the control unit 40.
- the second intermediate point 24 may coincide with the first intermediate point 23.
- the position where pressing starts in the first step and the position where pressing starts in the third step coincide with each other.
- Figures 7 and 8 are plan views for explaining another example of the third step in the manufacturing method of the laminate according to this embodiment.
- the second midpoint 24 is closer to the first end 21 than the first midpoint 23.
- the portion where lamination pressure is applied in the first step and the portion where lamination pressure is applied in the third step overlap in part.
- the second midpoint 24 is closer to the second end 21 than the first midpoint 23. That is, there is a gap between the first midpoint 23 and the second midpoint 24.
- the area between the first midpoint 23 and the second midpoint 24 is not subjected to lamination pressure in either the first or third process. Even if lamination pressure is not applied to the area between the first midpoint 23 and the second midpoint 24, the area between them is naturally laminated by going through the first and third processes. In this case, it is possible to sufficiently cope with low precision of the operation of the pressing tool 30, and the manufacturing device for the laminate can be made inexpensive.
- the distance between the first midpoint 23 and the second midpoint 24 is, for example, 10 mm or less, and preferably 3 mm or less.
- the lamination pressure with which the pressing tool 30 is pressed against the laminated film 10 or the substrate 20 is, for example, 0.1 MPa or more and 0.5 MPa or less, and preferably 0.3 MPa or more and 0.4 MPa or less.
- the pressing tool 30 may be stopped when it reaches the second end 22 from the second midpoint 24.
- the pressing tool 30 may also proceed beyond the second end 22 in the travel direction (+x direction).
- the pressing tool 30 climbs up the step between the laminated film 10 and the substrate 20, cracks are likely to occur in the laminated film 10, but cracks are unlikely to occur when it descends the step, so there is no problem even if the pressing tool 30 proceeds beyond the second end 22 in the travel direction.
- the lamination pressure per unit time between the laminate film 10 and the substrate 20 may be different between the second midpoint 24 and the second end 22.
- the lamination pressure per unit time at the second midpoint 24 may be greater than the lamination pressure per unit time at the second end 22.
- the lamination pressure per unit time between the laminated film 10 and the substrate 20 may be changed according to the width of the substrate 20 in the y direction.
- the lamination pressure per unit time is changed between the first portion 28 and the second portion 27.
- the width W28 in the y direction of the first portion 28 is narrower than the width W27 in the y direction of the second portion 27.
- the lamination pressure per unit time in the first portion 28 is made smaller than the lamination pressure per unit time in the second portion 27.
- the laminate manufacturing apparatus includes a pressing tool 30 and a control unit 40.
- the laminate manufacturing apparatus will be described with reference to FIG.
- the pressing tool 30 presses the laminated film 10 against the substrate 20. There is no particular restriction on the pressing tool 30 as long as it can apply pressure in the thickness direction of the laminated film 10 and the substrate 20.
- the control unit 40 controls the relative position of the pressing tool 30 and the substrate 20.
- the control unit 40 is, for example, a microprocessor.
- the control unit 40 controls the operation of the pressing tool 30 based on a program stored in the microprocessor.
- the control unit 40 controls the pressing tool 30, for example, so that the pressing tool 30 performs a first operation, a second operation, and a third operation.
- the first operation corresponds to the first step described above.
- a pressing tool 30 is used to press the first intermediate point 23 of the substrate 20, and while pressing the pressing tool 30 against the laminated film 10, the pressing tool 30 is moved from the first intermediate point 23 toward the first end 21.
- the second operation is an operation corresponding to the second step described above.
- the pressing tool 30 is moved to the second intermediate point 24 without pressing the pressing tool 30 against the laminated film 10.
- the second intermediate point 24 may or may not coincide with the first intermediate point 23.
- the third operation corresponds to the third step described above.
- the pressing tool 30 is moved from the second intermediate point 24 toward the second end 22 while being pressed against the laminated film 10.
- the laminate manufacturing apparatus according to this embodiment can easily realize the laminate manufacturing method described above. Therefore, when a laminate consisting of a laminate film 10 and a substrate 20 is produced using the laminate manufacturing apparatus according to this embodiment, cracks are unlikely to occur in the laminate film 10.
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- Inorganic Chemistry (AREA)
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Abstract
Description
本実施形態に係る積層体の製造方法は、第1工程と第2工程と第3工程とを有する。本実施形態に係る積層体の製造方法では、積層フィルム10を基板20に貼り合わせ、積層フィルム10と基板20とからなる積層体を作製する。
本実施形態に係る積層体の製造装置は、押圧具30と制御部40とを備える。図3を例に、積層体の製造装置を説明する。
Claims (10)
- 基材フィルムと前記基材フィルムに積層された無機層とを有する積層フィルムを、基板の第1端と第2端との間の第1中間点に押圧具を用いて押し当て、前記押圧具を前記積層フィルムに押し当てながら、前記第1中間点から前記第1端に向かって前記押圧具を移動させる第1工程と、
前記押圧具を前記積層フィルムに押し当てずに、前記第1端と前記第2端との間の第2中間点に前記押圧具を移動させる第2工程と、
前記押圧具を前記積層フィルムに押し当てながら、前記第2中間点から前記第2端に向かって前記押圧具を移動させる第3工程と、を有する、積層体の製造方法。 - 前記第2中間点は、前記第1中間点と一致する、請求項1に記載の積層体の製造方法。
- 前記第2中間点は、前記第1中間点より前記第1端の近くにある、請求項1に記載の積層体の製造方法。
- 前記第2中間点は、前記第1中間点より前記第2端の近くにある、請求項1に記載の積層体の製造方法。
- 前記積層フィルムと前記基板との単位時間当たりの貼合圧力は、前記第1中間点の方が前記第1端より大きい、請求項1に記載の積層体の製造方法。
- 前記積層フィルムと前記基板との単位時間当たりの貼合圧力は、前記第2中間点の方が前記第2端より大きい、請求項1に記載の積層体の製造方法。
- 前記基板は、前記第1端と前記第2端とを繋ぐ第1方向と直交する第2方向の幅が一定ではなく、
第1部分は、第2部分より前記第2方向の幅が短く、
前記積層フィルムと前記基板との単位時間当たりの貼合圧力は、前記第1部分の方が前記第2部分より小さい、請求項1に記載の積層体の製造方法。 - 前記押圧具は、前記積層フィルムに接する第1ローラーと、前記基板に接する第2ローラーと、を有する、請求項1に記載の積層体の製造方法。
- 前記第1工程及び前記第3工程において、前記押圧具によって前記積層フィルムと前記基板とを貼合する貼合圧力は0.1MPa以上0.5MPa以下である、請求項1に記載の積層体の製造方法。
- 基材フィルムと前記基材フィルムに積層された無機層とを有する積層フィルムを基板に押し当てる押圧具と、
前記押圧具と基板との相対位置を制御する制御部と、を備え、
前記制御部は、
前記基板の第1端と第2端との間の第1中間点に前記押圧具を用いて押し当て、前記押圧具を前記積層フィルムに押し当てながら、前記第1中間点から前記第1端に向かって前記押圧具を移動させる第1動作と、
前記押圧具を前記積層フィルムに押し当てずに、前記第1端と前記第2端との間の第2中間点に前記押圧具を移動させる第2動作と、
前記押圧具を前記積層フィルムに押し当てながら、前記第2中間点から前記第2端に向かって前記押圧具を移動させる第3動作と、を行う、積層体の製造装置。
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| CN202380061957.4A CN119789956A (zh) | 2022-10-11 | 2023-10-03 | 层叠体的制造方法和层叠体的制造装置 |
| EP23877193.5A EP4603281A1 (en) | 2022-10-11 | 2023-10-03 | Method for producing laminate and device for producing laminate |
| KR1020257007177A KR20250048734A (ko) | 2022-10-11 | 2023-10-03 | 적층체의 제조 방법 및 적층체의 제조 장치 |
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| JP2022-163216 | 2022-10-11 |
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| JP2002189431A (ja) * | 2000-12-21 | 2002-07-05 | Minolta Co Ltd | 積層型表示装置の製造方法 |
| JP2018185505A (ja) | 2017-04-26 | 2018-11-22 | 住友化学株式会社 | 貼合装置 |
| JP2022163216A (ja) | 2020-11-04 | 2022-10-25 | グリー株式会社 | ゲーム制御方法、コンピュータ及び制御プログラム |
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2023
- 2023-10-03 EP EP23877193.5A patent/EP4603281A1/en active Pending
- 2023-10-03 WO PCT/JP2023/036053 patent/WO2024080188A1/ja not_active Ceased
- 2023-10-03 CN CN202380061957.4A patent/CN119789956A/zh active Pending
- 2023-10-03 KR KR1020257007177A patent/KR20250048734A/ko active Pending
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| JP2002189431A (ja) * | 2000-12-21 | 2002-07-05 | Minolta Co Ltd | 積層型表示装置の製造方法 |
| JP2018185505A (ja) | 2017-04-26 | 2018-11-22 | 住友化学株式会社 | 貼合装置 |
| JP2022163216A (ja) | 2020-11-04 | 2022-10-25 | グリー株式会社 | ゲーム制御方法、コンピュータ及び制御プログラム |
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| CN119789956A (zh) | 2025-04-08 |
| EP4603281A1 (en) | 2025-08-20 |
| KR20250048734A (ko) | 2025-04-10 |
| TW202421561A (zh) | 2024-06-01 |
| JP2024056386A (ja) | 2024-04-23 |
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