WO2007114159A1 - 多層フィルムおよびこれを用いた積層体並びに積層体の製造方法 - Google Patents
多層フィルムおよびこれを用いた積層体並びに積層体の製造方法 Download PDFInfo
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- WO2007114159A1 WO2007114159A1 PCT/JP2007/056630 JP2007056630W WO2007114159A1 WO 2007114159 A1 WO2007114159 A1 WO 2007114159A1 JP 2007056630 W JP2007056630 W JP 2007056630W WO 2007114159 A1 WO2007114159 A1 WO 2007114159A1
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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
- B32B27/00—Layered products comprising a layer of synthetic resin
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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
- B32B15/00—Layered products comprising a layer of metal
- B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B15/08—Layered products comprising a layer of metal comprising metal 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
- B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
- B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
- B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
- B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
- B32B17/10009—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the number, the constitution or treatment of glass sheets
- B32B17/10018—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the number, the constitution or treatment of glass sheets comprising only one glass sheet
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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
- B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
- B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
- B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
- B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
- B32B17/10165—Functional features of the laminated safety glass or glazing
- B32B17/10174—Coatings of a metallic or dielectric material on a constituent layer of glass or polymer
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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
- 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
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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
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
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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
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/34—Layered products comprising a layer of synthetic resin comprising polyamides
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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
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
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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
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
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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
- B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
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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
- B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
- B32B9/005—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising one layer of ceramic material, e.g. porcelain, ceramic tile
- B32B9/007—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising one layer of ceramic material, e.g. porcelain, ceramic tile comprising carbon, e.g. graphite, composite carbon
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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
- B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
- B32B9/04—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B9/045—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance 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
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J163/00—Adhesives based on epoxy resins; Adhesives based on derivatives of epoxy resins
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J201/00—Adhesives based on unspecified macromolecular compounds
- C09J201/02—Adhesives based on unspecified macromolecular compounds characterised by the presence of specified groups, e.g. terminal or pendant functional groups
-
- 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
- B32B2255/00—Coating on the layer surface
- B32B2255/10—Coating on the layer surface on synthetic resin layer or on natural or synthetic rubber layer
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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
- B32B2255/00—Coating on the layer surface
- B32B2255/20—Inorganic coating
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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
- B32B2379/00—Other polymers having nitrogen, with or without oxygen or carbon only, in the main chain
- B32B2379/08—Polyimides
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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
- B32B2457/00—Electrical equipment
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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
- B32B2457/00—Electrical equipment
- B32B2457/20—Displays, e.g. liquid crystal displays, plasma displays
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2301/00—Additional features of adhesives in the form of films or foils
- C09J2301/40—Additional features of adhesives in the form of films or foils characterized by the presence of essential components
- C09J2301/41—Additional features of adhesives in the form of films or foils characterized by the presence of essential components additives as essential feature of the carrier layer
Definitions
- the present invention relates to a multilayer film, a laminate using the same, and a method for producing the laminate. Specifically, the present invention has excellent adhesion to a substrate such as a thin film transistor substrate and includes a substrate including an inorganic material layer on the surface.
- the present invention relates to a multilayer film capable of realizing weight reduction, thinning, and flexibility by forming a laminate, a laminate using the multilayer film, and a method for manufacturing the laminate.
- the demands for weight reduction, thinning, and flexibility of substrate materials are increasing not only for organic substrates but also for organic material substrates.
- the ease of cracking which is a drawback of inorganic materials, can be overcome, and the possibilities of thinning and flexible brewing will expand.
- the thin film transistor (abbreviated as TFT) substrate used in liquid crystal displays, etc. is flexible with a glass film laminated on a glass thin film to meet the demand for non-planar display materials such as curved surfaces.
- Development of a substrate that combines both gas and gas barrier properties is underway. For example, there is a method of making a flexible TFT by creating a TFT on a glass thin film laminated on a temporary substrate and transferring the glass thin film to a resin film substrate.
- Adhesives for adhering a glass thin film to a resin film and laminating them on a laminated substrate include photo-curing and thermosetting adhesives.
- thermosetting adhesive when a thermosetting adhesive is used, problems such as deformation of the substrate and disconnection of the wiring, which cause a large shrinkage of curing during bonding, are likely to occur.
- photo-curing adhesive when a photo-curing adhesive was used, there was a risk that the transistor part of the TFT body would deteriorate and the electrical characteristics would change due to strong light on the TFT.
- the present inventor has prepared a pre-coating film produced by superposing an adhesive resin layer on a base film (film substrate) by applying a modified resin having an adhesive function in a varnish state.
- Multi-layer film strength We obtained knowledge that it has excellent adhesion to substrates such as TFT substrates.
- the modified resin having an adhesive function is applied directly on the base film made of resin, the solvent of the coating varnish is infiltrated into the base film and remains. Since this residual solvent acts as a plasticizer, it has a feature that it can be bonded to the substrate at a temperature lower than the glass transition temperature of the adhesive resin.
- unnecessary residual solvent remains in the base film, the thermal expansion coefficient of the multilayer film increases. As a result, in the laminate in which the multilayer film is laminated with the substrate, it remains in the substrate material after bonding. There was a problem that the substrate was warped and cracked during the heat shock test of the laminate due to the stress.
- the present invention by forming a laminate with a substrate including an inorganic material layer on the surface, which is excellent in adhesion to a substrate such as a thin film transistor substrate, the weight is reduced, the thickness is reduced, and the flexibility is reduced. It is an object of the present invention to provide a multilayer film capable of realizing wrinkles, a laminate including the multilayer film, and a method for producing the laminate.
- the present inventor has intensively studied to achieve the above problems.
- an inorganic thin film layer between the base film and an adhesive resin layer such as an adhesive resin coating varnish
- the solvent in the adhesive resin layer does not infiltrate the base film. Residual solvent can be left only in the adhesive resin layer, and by reducing wasteful residual solvent, It has been found that the thermal expansion coefficient of the layer film can be greatly suppressed.
- the inorganic thin film layer it was also found that the water vapor permeability from the base film can be reduced, and the adhesion degradation after the high temperature and high humidity resistance test between the adhesive resin layer and the substrate surface can be greatly suppressed. .
- the adhesiveness with the resin constituting the base film is not limited, the range of selection of the resin for the base film is widened, and only one type of resin constituting the adhesive resin layer can be handled. Therefore, it was found that it is industrially superior.
- the present invention is based on such knowledge.
- the present invention provides the following inventions.
- Tg glass transition temperature
- a multilayer film comprising an adhesive resin layer including a resin having a polar group, which is provided on the inorganic material and can be bonded to the inorganic material.
- the base vinyl 1 is a film made of at least one resin selected from the group consisting of polyester resin, alicyclic structure-containing resin, polycarbonate resin, and polyimide resin [1] ] The multilayer film as described in.
- the inorganic thin film layer is composed of at least one material selected from metals, metalloids, inorganic oxides, inorganic nitrides, inorganic nitride oxides, and group forces that also have diamond-like carbon power [ The multilayer film according to [1] or [2].
- the substrate includes a base film 3 made of resin 3 having a glass transition temperature (Tg) of 80 ° C. or higher, and the inorganic material layer provided on the base film 3 [6] Laminate described in
- a laminate comprising a step of bonding a film and a substrate including an inorganic material layer made of inorganic material 2 on the surface at a temperature not lower than 40 ° C. and not higher than the glass transition temperature of the resin 2 having the polar group. Manufacturing method.
- the multilayer film of the present invention since solvent infiltration into the base film made of resin is suppressed, an increase in the coefficient of thermal expansion is suppressed, and the multilayer film is provided on a substrate including an inorganic material layer on the surface. At this time, warpage, cracks, and the like of the substrate can be suppressed.
- the multilayer film of the present invention is provided on a substrate having an inorganic material layer on the surface to form a laminate, the thermal expansion coefficient of the laminate hardly increases, so that the residual stress is reduced. The generation of cracks is suppressed, and a laminate having excellent adhesion between the adhesive resin layer and the inorganic thin film layer can be obtained.
- FIG. 1 is a schematic view of a production apparatus suitable for an embodiment.
- the multilayer film of the present invention has a multilayer structure in which an adhesive resin layer is provided on a base film 1 made of resin 1 via an inorganic thin film layer.
- the inorganic thin film layer constituting the multilayer film of the present invention is a layer made of an inorganic material (inorganic material 1) provided on the base film 1.
- an inorganic material is not particularly limited as long as it can provide a barrier property against solvent infiltration.
- a metal or metalloid such as Si, Mg, Ti, Al, In, Sn, Zn, W, Ce, or Zr, an inorganic compound, or a diamond-like carbon force is preferable.
- the inorganic compound inorganic oxides, inorganic nitrides, inorganic nitride oxides, and inorganic sulfates are preferable.
- metals or metalloids, inorganic oxides, inorganic nitrides, non-nitride oxides, and diamond-like carbon are particularly preferable. At least one of these intermediate forces can be selected and used.
- Examples of inorganic oxides include aluminum oxide, silicon dioxide, silicon oxynitride, or mixtures thereof, ITO (indium tin oxide), IZO (indium zinc oxide), AZO ( Aluminum zinc oxide), acid zinc, zinc sulfide, ICO (indium cerium oxide), acid titanium, and the like.
- Examples of the inorganic nitride include silicon nitride. Among these inorganic substances, diacid or oxynitride is preferable.
- An inorganic film formed using diacid or silicon oxynitride can be transparent and have a high barrier property against solvent infiltration. Moreover, it is excellent also in adhesiveness with the adhesive resin layer which has an adhesive function with the inorganic material 2 mentioned later.
- the average thickness of the inorganic thin film layer is preferably 5 to 500 nm, more preferably 10 to 250 nm, and more preferably 50 ⁇ ! ⁇ 130nm. If the average thickness of the inorganic thin film layer is too thin, the barrier property against solvent infiltration may be insufficient. Conversely, if it is too thick, the film loses flexibility and is likely to crack.
- the crystal state of the inorganic thin film layer is preferably a uniform amorphous structure including a columnar structure or a granular structure.
- a columnar structure or a granular structure When a columnar structure or a granular structure is included, the crystal grain boundary becomes a molecular diffusion path against solvent infiltration, which may reduce the barrier property against solvent infiltration.
- the inorganic thin film layer is deposited on the base film 1. It is preferable that it is an inorganic vapor deposition layer formed.
- the method for forming such an inorganic vapor deposition layer is not particularly limited. For example, when an inorganic vapor deposition layer is formed in advance on the base film 1 and an adhesive resin layer is formed on the inorganic vapor deposition layer, an inorganic vapor deposition layer can be formed efficiently because an inorganic film having a high film density can be formed efficiently.
- the vacuum deposition method, the sputtering method, the ion plating method, and the CVD method are preferred, and there is no damage to the organic film or transparent resin base material, and the film density can be increased.
- vacuum deposition method and CVD method using arc discharge plasma When arc discharge plasma is used, vaporized particles having an appropriate energy are generated and a high-density film can be formed.
- Vacuum deposition is, 10- 2 ⁇ : LO- 5 Pa approximately resistive heating in vacuum, an electron beam heating, laser beam heating, forming a vapor deposition film by thermal evaporation deposition material by a method such as an arc discharge This is how to do it.
- sputtering is performed by bombarding a target (vapor deposition material) with cations such as Ar + accelerated by glow discharge in a vacuum of about 1 to 10 1 Pa where an inert gas such as argon exists.
- the deposition material is sputter evaporated to form a deposited film on the surface of the base film.
- Evaporation methods include DC (direct current) sputtering, RF (radio frequency) sputtering, magnetron sputtering, and bias sputtering.
- the ion plating method is a vapor deposition method in which the above vacuum vapor deposition method and the sputtering method are combined. In this way, in a vacuum of about 1 to 10 ⁇ , the evaporated atoms released by heating can be ionized and accelerated in an electric field to form a thin film in a high energy state.
- the CVD method is similar to the CVD method in the formation of the organic film, and can use a metal or a metalloid compound as a deposition material, or a metal or metalloid simple substance, an oxygen atom, and a nitrogen atom. Alternatively, it is a method in which a substance containing a sulfur atom is used in combination, vaporized, reacted as necessary, and deposited on a substrate to form a film.
- the base film 1 constituting the multilayer film of the present invention needs to be made of a resin 1 having a glass transition temperature (Tg) of 80 ° C or higher.
- Tg glass transition temperature
- Manufacturing process and product of the multilayer film of the present invention In the manufacturing process of the layered body, heating is usually performed, and when used for an electronic device, the manufacturing process may include a heating process.
- the glass transition temperature (Tg) of the resin 1 is less than 80 ° C, the heat-resistant temperature during these heating steps is lowered, and the reliability of the adhesive strength is lowered.
- the higher the heat resistance of the base film the better to maintain heat resistance such as the heat resistance of the product and the heat resistance of the manufacturing process.
- the Tg of the resin 1 constituting the base film 1 should be 120 ° C or higher. Preferably there is.
- the glass transition temperature (Tg) of the resin 1 is equal to or higher than the Tg of the resin 2 constituting the adhesive resin layer, the multilayer film is heated to a temperature close to the Tg of the adhesive resin layer. This is preferable because melting can be prevented when laminating.
- Examples of the resin 1 (polymer) used for the base film 1 include norbornene resin, monocyclic cyclic olefin fin resin, cyclic conjugated diene resin, vinyl alicyclic hydrocarbon resin, and these Polyolefin resin; Polysulfone resin; Polyethersulfone resin; Polyethersulfone resin; Polystyrene resin; Polyamide resin; Acrylic resin containing alicyclic structure such as hydrogenated product Examples include resin, metatalyl resin, and polyimide resin.
- polyester resin consists of polyester resin, polyethylene resin resin, chain polyolefin resin, alicyclic structure-containing resin, polycarbonate resin, resin resin, methallyl resin, polystyrene resin, polyamide resin, and polyimide resin.
- At least one kind of resin that can also be selected for group power is preferred. Of these, those having high transparency are preferred. Of these, alicyclic structure-containing resins, polyester resins, polyimide resins, and polycarbonate resins are particularly preferable from the viewpoints of transparency, low moisture absorption, dimensional stability, lightness, and the like.
- the thickness of the base film 1 is preferably 5 to 300 m, more preferably 15 to 200 m.
- the adhesive resin layer used in the multilayer film of the present invention is a layer containing a resin 2 having an adhesive function with an inorganic material (inorganic material 2) constituting an inorganic material layer of a substrate in a laminate described later. is there.
- the term “adherable” means 10 mm width and 90 ° peel strength OOgZlOmm or more when bonded to inorganic material 2 constituting the inorganic material layer of the substrate described later.
- the adhesive resin layer can be composed of, for example, a resin containing a solvent or dissolved in a solvent, whereby the adhesion to the resin 1 constituting the base film 1 is improved. It is preferable because it can be improved.
- the adhesive resin layer may be made of a resin containing no solvent as long as it is a layer containing the adhesive resin 2 as described above.
- the content of the solvent in the adhesive resin layer is preferably 0.2 to 2.3% by weight, more preferably 0. 4 to 1.8% by weight, particularly preferably 0.8 to 1.0% by weight.
- the solvent content can be measured by internal standard gas chromatography. That is, the multilayer film can be dissolved in a solvent different from the solvent used for the adhesive resin layer, and the solvent content can be calculated using the solvent used for the adhesive resin layer as an internal standard solution.
- the resin 2 constituting the adhesive resin layer is not particularly limited, and a resin having the same or similar structure as the resin 1 used for the base film 1 can be used.
- a resin having the same or similar structure as the resin 1 used for the base film 1 can be used.
- acrylic resin, polyester resin, chain olefin resin, and cycloaliphatic structure-containing resin are listed. Among them, alicyclic structure-containing resins are preferable from the viewpoint of transparency.
- the alicyclic structure-containing resin is one having an alicyclic structure in the main chain and Z or side chain, and having an alicyclic structure in the main chain from the viewpoint of mechanical strength, heat resistance, etc. Is preferred.
- Examples of alicyclic structures of coconut oil include saturated alicyclic hydrocarbon (cycloalkane) structures and unsaturated alicyclic hydrocarbon (cycloalkene) structures. From the viewpoint of mechanical strength, heat resistance, etc. Alkane structures are preferred.
- the number of carbon atoms constituting the alicyclic structure is not particularly limited, but is usually 4-30, preferably 5-20, more preferably 5-15 mechanical strength, The properties of heat resistance and film formability are well balanced and suitable.
- the proportion of the repeating unit containing the alicyclic structure in the alicyclic structure-containing coconut resin preferably used in the present invention may be appropriately selected according to the purpose of use, but is preferably 30% by weight. More preferably, it is 50% or more, particularly preferably 70% by weight or more, and most preferably 90% by weight or more.
- the viewpoint power of transparency and heat resistance of the base film and the adhesive resin layer is also preferred.
- the alicyclic structure-containing rosin includes (1) norbornene rosin, and (2) monocyclic oleoresin.
- Examples include fin resin, (3) cyclic conjugated resin resin, (4) vinyl alicyclic hydrocarbon resin, and hydrogenated products thereof.
- norbornene resin and cyclic conjugated resin resin are more preferable from the viewpoints of transparency and moldability.
- the norbornene resin includes a ring-opening polymer of a norbornene monomer, a ring-opening copolymer of the norbornene monomer and another monomer capable of ring-opening copolymerization with the norbornene monomer, and these ring-opening copolymers.
- examples thereof include a hydride of a copolymer, an addition polymer of a norbornene monomer, and an addition copolymer of a norbornene monomer and another monomer copolymerizable with the norbornene monomer.
- a hydride of a ring-opening (co) polymer of a norbornene monomer is particularly preferable.
- Examples of monocyclic cyclic olefin fin resins include addition polymers of cyclic olefin monomers having a single ring such as cyclohexene, cycloheptene, and cyclooctene.
- Cyclic conjugated gen resin includes polymers obtained by cyclization reaction of addition polymers of conjugated gen monomers such as 1,3 butadiene, isoprene, and black mouth plane; Mention may be made of 1,2 or 1,4 addition polymers of cyclic conjugation monomers such as hexagen; and their hydrides.
- Bull alicyclic hydrocarbon resins include polymers of bur cycloaliphatic hydrocarbon monomers such as bulcyclohexene and burcyclohexane and their hydrides; styrene, ⁇ -methylstyrene, etc. Hydrogenated products obtained by hydrogenating aromatic rings contained in polymers obtained by polymerizing vinyl aromatic hydrocarbon monomers; vinyl alicyclic hydrocarbon monomers or bulu aromatic hydrocarbon monomers and these bu aromatic hydrocarbons And a hydrogenated product of an aromatic ring portion of a copolymer such as a random copolymer or a block copolymer with another monomer copolymerizable with a hydrogen monomer.
- the block copolymer include diblock, triblock or more multiblock, and gradient block copolymer.
- the alicyclic structure-containing rosin is disclosed in, for example, JP-A-2002-321302.
- the known polymer strength is selected.
- the glass transition temperature of the resin 2 constituting the adhesive resin layer is preferably 40 to 190 ° C, more preferably 50 to 160 ° C, and particularly preferably 60 to 145 ° C.
- the resin 2 constituting the adhesive resin layer has a polar group.
- a polar group include an acid anhydride group, an epoxy group, a carboxyl group, an acid amide group, an isocyanate group, a hydroxyl group, and a cyano group.
- any of an acid anhydride group and an epoxy group can be mentioned. Or preferably both.
- the content of the polar group in ⁇ 2 constituting the adhesive ⁇ layer ⁇ preferably in an amount per LOOG 0. 5 to 25 mole 0/0, more preferably from 1.2 to 15 molar% Particularly preferred is 1.5 to 12 mol%.
- an inorganic thin film layer can be provided on the base film 1 and an adhesive resin layer can be formed thereon.
- a coupling agent treatment using aminopropyltrimethoxysilane or the like is performed on the inorganic thin film layer in advance. Keeping power is preferable in terms of improving the adhesion between the two.
- a resin having an acid anhydride group is used as the resin 2 constituting the adhesive resin layer.
- Examples of the method in which an inorganic thin film layer is provided on the base film 1 and an adhesive resin layer is formed on the inorganic thin film layer include a solution casting method and a melt extrusion method that are not particularly limited. Of these, the solution casting method is preferred in that the thickness of the adhesive resin layer can be applied as uniformly as possible, and the solvent content in the multilayer film can be set to a desired amount.
- the material constituting the adhesive resin layer is dissolved in an appropriate solvent to obtain a varnish, and reverse roll coating, gravure coating, air knife coating, blade coating, etc. According to the method, it may be coated on the inorganic thin film layer and then dried to remove the solvent.
- Solvents that can be used in forming the adhesive resin layer include ketones, ethers, esters, aromatic hydrocarbons and hydrogenated products thereof. Can be mentioned. These may be used alone or in combination of two or more.
- the thickness of the adhesive resin layer is preferably 1 to 50 m, more preferably 3 to 15 m.
- the thermal expansion coefficient measured in the temperature range of 80 to 120 ° C of the multilayer film exhibits a large value in the same range as the thermal expansion coefficient of the base film 1 or in a range of 30 ppm or less. Is preferred.
- the thermal expansion coefficient in the present invention is a linear expansion coefficient unless otherwise specified.
- the coefficient of thermal expansion is measured in the following manner using a commercially available thermomechanical analyzer (TMA).
- TMA thermomechanical analyzer
- the multilayer film is cut into a predetermined size. Then, the cut multilayer film is set in a thermomechanical analyzer, and while applying a load of 0.1 N, the temperature is raised from room temperature at a rate of 5 ° C / min in a nitrogen atmosphere and in a temperature range of 80 to 120 ° C.
- the coefficient of thermal expansion is measured. This measurement is usually performed twice. In this case, it is preferable that the measured value of the first coefficient of thermal expansion in the first and second measured values is in the above range.
- the solvent evaporates by the first thermal expansion coefficient measurement, so even if the adhesive resin is cooled and the force is measured a second time after the first measurement, the measured value depends on the amount of solvent. This is because the coefficient of thermal expansion is close to the original thermal expansion coefficient.
- the temperature is usually raised. At this time, a part of the solvent in the adhesive resin layer evaporates. The resulting laminate loses the solvent of the adhesive resin layer, and the thermal expansion coefficient of the resin in the adhesive resin layer is close to the original thermal expansion coefficient of the resin.
- the coefficient of thermal expansion measured in the temperature range of 80 to 120 ° C is the same as the coefficient of thermal expansion of base film 1, or a multilayer film showing a large value within 30 ppm or less includes an inorganic material layer. Adhesion was found to be good when laminated to the substrate.
- the multilayer film of the present invention has adhesiveness to the inorganic material of the substrate while maintaining the characteristics of the base film.
- a base film having a total light transmittance of 88% or more at a wavelength of 400 to 650 nm the total light transmittance of the multilayer film can be maintained at 85% or more.
- the film has a high light transmittance and is useful as an optical material such as a TFT for liquid crystal.
- the total light transmittance at a wavelength of 400 to 650 nm can be measured using a commercially available turbidimeter in accordance with JIS K7361-1.
- a base film having a low coefficient of thermal expansion the coefficient of thermal expansion of the multilayer film can be suppressed to a low level, and the residual stress on the substrate including the inorganic material layer can be reduced.
- the multilayer film of the present invention can be used as a material for a laminate useful for a TFT substrate or the like, and the present invention also provides such a laminate. That is, in the present invention, the substrate having the inorganic material layer made of the inorganic material 2 on the surface and the multilayer film are in contact with the inorganic material layer of the substrate and the adhesive resin layer of the multilayer film. A laminate formed by laminating is provided.
- the substrate used in the laminate of the present invention may be a substrate having an inorganic material layer made of the inorganic material 2. That is, the substrate may be a substrate in which only the inorganic material layer has power, or may be a substrate having the inorganic material layer as one of its constituent layers. Further, the inorganic material layer need not be one kind, and two or more different inorganic material layers may be included. Examples of the inorganic material layer include a glass layer, a metal layer, and a metal oxide layer. In particular, the glass layer is useful because it is used in many TFT substrates.
- the thickness of the substrate is not particularly limited, and can be appropriately determined according to the use and properties of the laminate, the material constituting the inorganic material layer, and the like.
- the thickness can be 0.1 to 500 / ⁇ ⁇ , preferably 1 to 200 / ⁇ ⁇ . .
- the thickness of the inorganic material layer can be 0.05 to 10 111. 0.1-2 / ⁇ ⁇ is preferable.
- the thickness of the organic material layer can usually be 5 to 300 / ⁇ ⁇ , and preferably 15 to 200 / ⁇ ⁇ .
- the thickness of the substrate is not particularly limited.
- a base film 3 made of resin 3 having a glass transition temperature (Tg) of 80 ° C. or more can be used as the organic material layer.
- the above-mentioned inorganic material layer is preferably an inorganic thin film layer deposited on at least one surface of the base film 3 made of the resin 3.
- the inorganic thin film layer is the same as that described in the explanation of the inorganic thin film layer in the multilayer film of the present invention.
- the base film 3 made of resin 3 having a glass transition temperature (Tg) of 80 ° C. or higher is the same as described in the explanation part of the resin 1 constituting the base film 1 in the multilayer film of the present invention. Can be mentioned.
- the laminate of the present invention adheres the multilayer film of the present invention and the substrate including the inorganic material layer with good adhesion, while suppressing peeling and deformation of the laminate after adhesion and maintaining transparency. Is required. Therefore, the adhesive resin layer of the multilayer film usually contains a small amount of the solvent as described above, and the residual solvent acts as a plasticizer at the time of bonding, and reduces the bonding temperature. As a result, the residual stress on the substrate after bonding is reduced. Therefore, the method of bonding the multilayer film and the substrate is important because it has a great influence on the adhesion during bonding and the durability after bonding. The present invention also provides a method for producing such a laminate.
- the method for producing a laminate of the present invention includes the multilayer film of the present invention, wherein the resin 2 having the polar group in the film is a resin having a glass transition temperature of 40 ° C. or higher.
- the bonding temperature it is necessary to set the bonding temperature to 40 ° C or higher. If the temperature is lower than 40 ° C, peeling due to poor adhesion between the adhesive resin layer of the multilayer film and the inorganic material layer of the substrate tends to occur. Further, the solvent in the adhesive resin layer remains as it is, and the thermal expansion coefficient of the adhesive resin layer in the produced laminate is increased, and there is a risk of foaming due to the vaporization of the solvent due to temperature change during use.
- the adhesion temperature needs to be 40 ° C or higher, so the glass transition temperature of the resin 2 having a polar group must be 40 ° C or higher.
- the temperature is preferably 40 to 190 ° C, more preferably 50 to 160 ° C, and particularly preferably 60 to 145 ° C.
- the bonding temperature refers to the temperature of a machine used for bonding, such as a laminator.
- a flexible and transparent laminate of the present invention having complete glass noria properties can be produced.
- a transparent conductive material such as an ITO vapor deposition layer
- the laminate of the present invention can be applied to flexible electronic devices using TFTs, FPD substrates, IC card substrates, solar cell substrates, and the like.
- Parts and% are based on weight unless otherwise specified.
- the temperature is measured at 10 ° CZ by the differential scanning calorimetry (DSC method) and measured.
- thermomechanical analyzer TMA
- the measurement procedure is shown below. Measure the coefficient of thermal expansion of 80-120 ° C during the first heating and cool to room temperature after the measurement. During the second heating, again Measure the coefficient of thermal expansion of 80-120 ° C.
- the first measured value force is also calculated by subtracting the second measured value as the increase value.
- Cut out the multilayer film (about 200mg) and weigh it accurately. Accurately weigh 5 ml of tetrahydrofuran containing toluene as an internal standard, add the cut multilayer film to dissolve it, and obtain a measurement solution. The resulting solution is measured by an internal standard method using a gas chromatograph equipped with a flame ion detector.
- Adhesive Resin E1 Table 1 summarizes the physical properties of adhesive resin E1.
- the cyclization rate indicates the cyclization rate of cyclized isoprene.
- the cyclization rate was calculated from the peak area of protons derived from double bonds before and after the cyclization reaction of conjugated gen double bonds by proton NMR. The detailed measurement method was (i) m. A. Golub and J. Heller., Can. J. Chem., 41, 937 (1963).
- Norbornene resin film (saturated hydrocarbon resin having alicyclic structure) ZEONOR FILM ZF—16,100 m thick, total light transmittance 91% at a wavelength of 400 to 650 nm, this base film is referred to as 1B.
- 1B Norbornene resin film (saturated hydrocarbon resin having alicyclic structure) ZEONOR FILM ZF—16,100 m thick, total light transmittance 91% at a wavelength of 400 to 650 nm, this base film is referred to as 1B.
- silicon was used as a material constituting the inorganic vapor deposition layer, and oxygen was used as a reactive gas for the target. Silicon was loaded on target 5-1.
- the film-forming roll 4 to 40 ° C, silicon oxide (SiOx, x 2) having a refractive index 1.46 to layer, formed to a thickness of lOOnm And wound up on a take-up roll 7 to obtain a resin film 1E with an inorganic vapor-deposited layer.
- Polyester resin film (P EN Q51-50 m: manufactured by Teijin DuPont Films Japan, 60% total light transmittance at a wavelength of 400 to 650 nm, this base film is described as 2B.
- a silicon oxide layer was formed at 10 Onm to obtain a resin film 2E with an inorganic vapor deposition layer.
- a low thermal expansion polyimide base was produced by the method described in Example 1 of JP-A-2004-285129.
- This varnish was coated on 20 cm silicon using a spin coater, pre-betated at 100 ° C. for 3 minutes on a hot plate, and then beta-laminated in an oven at 400 ° C. for 1 hour in a nitrogen stream to produce a polyimide film.
- the film thickness of this film (this base film is referred to as 3B.
- the total light transmittance at a wavelength of 400 to 650 nm is 75%) was 18 ⁇ m.
- the film was peeled from the silicon wafer, and the coefficient of thermal expansion of the film was measured. The result was 3.2 ppm.
- Polyimide film manufactured in the same way / (fixed to silicon wafer (State) A SiO layer lOOnm is formed on the surface by sputtering, and a resin film with an inorganic vapor deposition layer is formed.
- Sputtering in this production example was performed under the following conditions using a sputtering apparatus CFS-4E P-LL manufactured by Shibaura Mechatronics.
- a silicon oxide layer was formed at lOOnm under the same conditions as in Production Example 1 using transmittance 90%) to obtain a resin film 4E with an inorganic vapor deposition layer.
- silicon was used as the material for the vapor deposition layer, and a silicon metal vapor deposition thin film with a thickness of lOnm was formed on the film by sputtering without introducing reactive gas (oxygen).
- a resin film 5E with a deposited layer was obtained.
- Silicon metal deposition The thin film was colored brown, but a uniform and excellent metal film could be formed on the film.
- the sputtering conditions were the same as those in Production Example 1 except that no reactive gas was introduced.
- Production Example 3 the same norbornene resin film used in Production Example 1 was used instead of base film 3B, and aluminum was used as the target. Film 6E was obtained.
- a multilayered film 2F was produced by the same operation except that the adhesive resin E1 synthesized in Synthesis Example 2 was used instead of the adhesive resin Ml synthesized in Synthesis Example 1.
- the adhesive resin varnish was directly applied and dried without treating the inorganic vapor-deposited layer with a coupling agent.
- Table 2 shows that the multilayer film 2F exhibits high adhesion as in the case of the film IF of Example 1 where the treatment was performed even though the coupling agent treatment was not performed. It became.
- Example 2 Under the conditions of Example 1, the adhesive resin MIR-1 synthesized in Synthesis Example 3 was used in place of the adhesive resin Ml synthesized in Synthesis Example 1, and the multilayered film was prepared under the same conditions as in Example 1. 3F was manufactured. The characteristics of the multilayer film 3F are shown in Table 2.
- a multilayered film 4F was produced under the same conditions as in Example 1 except that the resin film 1E with an inorganic vapor deposition layer was used in place of the resin film 1E with an inorganic vapor deposition layer.
- the characteristics of multilayered film 4F are listed in Table 2.
- a multilayered film 5F was produced under the same conditions as in Example 2 except that the resin film 1E with an inorganic vapor deposition layer was used instead of the resin film 1E with an inorganic vapor deposition layer under the conditions of Example 2.
- the characteristics of the multilayer film 5F are shown in Table 2.
- a multilayered film 6F was produced under the same conditions as in Example 3 except that the resin film 1E with an inorganic vapor deposition layer was used instead of the resin film 1E with an inorganic vapor deposition layer under the conditions of Example 3.
- the characteristics of multilayered film 6F are listed in Table 2. [0076] [Example 7] Production of multilayer film 7F
- a multilayered film 7F was produced under the same conditions as in Example 1 except that the resin film 3E with an inorganic vapor deposition layer was used in place of the resin film 1E with an inorganic vapor deposition layer.
- the characteristics of the multilayer film 7F are shown in Table-2.
- a multilayered film 8F was produced under the same conditions as in Example 2 except that the resin film 1E with an inorganic vapor deposition layer was used instead of the resin film 1E with an inorganic vapor deposition layer under the conditions of Example 2.
- the characteristics of the multilayer film 8F are shown in Table 2.
- a multilayered film 9F was produced under the same conditions as in Example 3 except that the resin film 1E with an inorganic vapor deposition layer was used instead of the resin film 1E with an inorganic vapor deposition layer under the conditions of Example 3.
- the properties of the multilayer film 9F are shown in Table 2.
- a multilayered film 10F was produced under the same conditions as in Example 1 except that the resin film 4E with an inorganic vapor deposition layer was used in place of the resin film 1E with an inorganic vapor deposition layer under the conditions of Example 1.
- the characteristics of the multilayer film 10F are shown in Table-2.
- a multilayered film 11F was produced under the same conditions as in Example 2 except that the resin film 1E with an inorganic vapor deposition layer was used instead of the resin film 1E with an inorganic vapor deposition layer under the conditions of Example 2.
- the properties of the multilayer film 11F are listed in Table 2.
- a multilayered film 12F was produced under the same conditions as in Example 3 except that the resin film 4E with an inorganic vapor deposition layer was used instead of the resin film 1E with an inorganic vapor deposition layer under the conditions of Example 3.
- the properties of the multilayer film 12F are listed in Table 2.
- Adhesive resin synthesized in Synthesis Example 2 instead of the adhesive resin synthesized in Synthesis Example 1 using the resin film 6E with a metal vapor deposition layer instead of 1E in the condition of Example 1
- a multilayer film 14F was produced under the same conditions as in Example 1 except that E1 was used.
- the properties of the multilayer film 14F are listed in Table 2.
- the base film 1B was directly coated with a varnish in which the adhesive functional resin Ml was dissolved. After coating, the film was dried in a clean oven at 105 ° C for 15 minutes to produce a multilayer film R1.
- the results are listed in Table 2.
- Example 2 a varnish coated with the adhesive functional resin E1 was applied directly to the base film 1B. After coating, the film was dried in a clean oven at 105 ° C for 15 minutes to produce a multilayer film R2.
- Example 5 a varnish in which the adhesive functional resin E1 was melted was applied directly to the base film 2B. After coating, the film was dried in a clean oven at 105 ° C for 15 minutes to produce a multilayer film R3. It was shown that the inorganic vapor deposition layer is necessary for the adhesive expression that the adhesion between the base film 2B and the adhesive resin layer is poor without having the inorganic vapor deposition layer. The results are shown in Table 2.
- Base film 2B surface is treated with corona and then with coupling agent, A varnish with melted El was applied. After coating, the film was dried in a clean oven at 105 ° C for 15 minutes to produce a multilayer film R4. The adhesion between the coated adhesive resin layer and the base film was improved but insufficient. The results are listed in Table 2.
- Example 8 a varnish coated with an adhesive functional resin E1 was applied directly to the polyimide base film 3B. After coating, the film was dried in a clean oven at 105 ° C for 15 minutes to produce a multilayer film R5. The adhesion between the coated adhesive resin layer and the base film 3B was poor. The results are listed in Table 2.
- Polyimide film (1 thickness), polycarbonate film (Sumilite FS—1650H, 100 / zm thickness).
- the coefficient of thermal expansion alone was measured twice at 30 to 130 ° C, and the average coefficient of thermal expansion in the temperature range of 80 to 120 ° C was shown.
- the surface of a white glass (manufactured by Dow Co., Ltd.) having a thickness of 0.7 mm was washed and dried, and then exposed to a silane coupling agent (aminopropyltrimethoxysilane) vapor for 120 seconds for surface treatment.
- a silane coupling agent aminopropyltrimethoxysilane
- the surface-treated glass and the adhesive film layer of the multilayer film were combined, and a laminated body was obtained by using a vacuum laminator.
- the bonding conditions were as follows: evacuation 60 seconds, bonding temperature 80 ° C, bonding time 300 seconds, bonding pressure 0.9 MPa.
- the obtained laminate was subjected to a 90-degree peel test under conditions of a width of 10 mm and a peeling speed of 5 mmZ, and judged according to the following criteria.
- ⁇ Peel strength is 400gZl0mm or more.
- a glass film having a thickness of 50 ⁇ m (manufactured by Matsunami Glass Co., Ltd.) was immersed in a 0.1% aqueous solution of aminopropyltriethoxy for 2 minutes and then dried at room temperature for 24 hours.
- This glass film and the adhesive resin layer of the multilayered film 1F obtained in Example 1 were bonded together, and a laminate 1 was obtained by vacuum lamination using a vacuum laminator so as not to sandwich air bubbles.
- the vacuum laminating conditions were as follows: evacuation 15 seconds, adhesion temperature 80 ° C, adhesion time 360 seconds, adhesion pressure 0.8 MPa. The results are listed in Table 3.
- the resulting laminate 1 has a bending force at the room temperature due to the difference in thermal expansion coefficient between the glass and the multilayer film. The generation of cracks in the glass film was ineffective. In addition, the total light transmittance at a wavelength of 400 to 650 nm was as high as 90% and excellent transparency.
- Example 15 Under the conditions of Example 15, the multilayered film 2F was used instead of the multilayered film 1F. Except for the above, the same operation as in Example 15 was performed to produce a laminate 2. The results are shown in Table 3. Laminate 2 also showed good properties like laminate 1. Also, the laminate 2 was excellent in transparency like the laminate 1.
- Example 15 Under the conditions of Example 15, using the multilayered film 3F instead of the multilayered film 1F, the same operation as in Example 15 was performed except that the adhesion temperature was changed to 60 ° C. to produce a laminate 3 did. The results are shown in Table-3. Laminate 3 also showed good properties like laminate 1. In addition, the laminate 3 was excellent in transparency like the laminate 1.
- Example 15 Under the conditions of Example 15, a laminate 4 was produced in the same manner as in Example 15 except that the multilayered film 4F was used instead of the multilayered film 1F. The results are shown in Table-3. As a result of the difference in the thermal expansion coefficient between the glass and the multilayered film in the obtained laminate 4, the warpage of the substrate at room temperature was greatly reduced.
- Example 15 Under the conditions of Example 15, a laminate 5 was produced in the same manner as in Example 15 except that the multilayered film 5F was used instead of the multilayered film 1F. The results are shown in Table 3. Laminate 5 also showed good properties like laminate 4.
- Example 15 Under the conditions of Example 15, using the multilayered film 6F instead of the multilayered film 1F, the same operation as in Example 15 was performed except that the adhesion temperature was changed to 60 ° C., whereby the laminate 6 was produced. did. The results are shown in Table-3. Laminate 6 also showed good properties like laminate 4.
- Example 15 Under the conditions of Example 15, a laminate 7 was produced in the same manner as in Example 15 except that the multilayered film 7F was used instead of the multilayered film 1F.
- the results are shown in Table 3.
- the coefficient of thermal expansion of the base film used in Laminate 7 is smaller than that of glass, and the difference is only a few ppm, so there is almost no warping of the laminate after bonding, both at room temperature and at 80 ° C overheating.
- Example 22 Manufacture of laminate 8 Under the conditions of Example 15, a laminate 8 was produced in the same manner as in Example 15 except that the multilayered film 8F was used instead of the multilayered film 1F. The results are shown in Table-3. Laminate 8 also showed good properties like laminate 7.
- Example 15 Under the conditions of Example 15, using the multilayered film 9F instead of the multilayered film 1F, the same operation as in Example 15 was performed except that the adhesion temperature was changed to 60 ° C. to produce a laminate 9 did. The results are shown in Table-3. Laminate 9 also showed good properties like laminate 7.
- a laminate 10 was produced in the same manner as in Example 15 except that the multilayered film 10F was used instead of the multilayered film 1F under the conditions of Example 15. The results are shown in Table-3.
- the warp of Laminate 10 was equivalent to Laminate 1, but it was expected to be useful because the surface hardness of the base film used was high.
- Example 15 Under the conditions of Example 15, a laminate 11 was produced in the same manner as in Example 15 except that the multilayered film 11F was used instead of the multilayered film 1F. The results are shown in Table-3.
- a laminated body 12 was produced in the same manner as in Example 15 except that the multilayered film 12F was used in place of the multilayered film 1F and the adhesion temperature was changed to 60 ° C under the conditions of Example 15. .
- the results are listed in Table 3.
- the inorganic vapor-deposited layer 1E produced in Production Example 1 was combined with the multilayered film 2F produced in Example 2 and bonded together using a vacuum laminator.
- the bonding conditions were the same as when laminate 1 was manufactured.
- the inorganic vapor-deposited layer and adhesive resin layer E1 deposited on the base film showed sufficient adhesion.
- the warping of the laminate 13 with two identical base films bonded was almost ineffective.
- a laminate 15 was produced in the same manner as in Example 15 except that the multilayered film 13F produced in Example 13 was used instead of the multilayered film 1F under the conditions of Example 15. Compared with the Si02 thin film, the norbornene resin film surface was not deteriorated in the acid and soot during the deposition of the silicon metal thin film, so that a laminate having excellent interfacial adhesion strength was obtained.
- a laminate 16 was produced in the same manner as in Example 15 except that the multilayered film 14F produced in Example 14 was used instead of the multilayered film 1F under the conditions of Example 15. Since the aluminum thin film layer has a light reflecting function, when a light emitting device is manufactured on the opposite side of the thin film glass (the side opposite to the surface on which the multilayered film is bonded), a glass substrate having an excellent light reflecting function should be used. Can do.
- a laminate R1 was produced in the same manner as in Example 15 except that the multilayered film R1 was used instead of the multilayered film 1F under the conditions of Example 15. The results are shown in Table-3.
- the obtained laminate R1 was greatly curved toward the multilayer film due to the difference in thermal expansion coefficient between the glass and the multilayer film at room temperature. Although it was fixed mechanically flat, a large crack was observed in the center of the thin film glass film.
- a laminate R2 was produced in the same manner as in Example 15 except that the multilayered film R2 was used instead of the multilayered film 1F under the conditions of Example 15. The results are shown in Table-3.
- the obtained laminate R2 was greatly curved toward the multilayer film due to the difference in thermal expansion coefficient between the glass and the multilayer film at room temperature. Although it was fixed mechanically flat, a large crack was observed in the center of the thin film glass film.
- the initial adhesion of the laminate bonded with the glass substrate and the multilayer film and the adhesion after the moisture resistance test are evaluated by the following cross peel test.
- cut in a lmm x lmm grid pattern from the multilayer film side of the sample piece and perform a peel test with a cellophane adhesive tape (24 mm width, specified in JIS Z1522). Measure the number of squares (per 100 squares) that have been transferred to the cellophane tape side.
- the conditions for the moisture resistance test are as follows.
- the laminated body of the glass substrate and multilayer film is left in an oven at 130 ° C for 30 minutes, and then cooled to room temperature. After repeating this operation three times, the adhesion between the glass and the multilayer film, interfacial debonding, interfacial foaming, undulation of the adhesion site (film wrinkles due to difference in thermal expansion coefficient), and cracks are observed.
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Abstract
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2273476A1 (en) * | 2008-04-24 | 2011-01-12 | Nitto Denko Corporation | Transparent substrate |
CN102224005A (zh) * | 2008-11-25 | 2011-10-19 | 住友电气工业株式会社 | 镁合金接合部件 |
JP2019025901A (ja) * | 2017-07-28 | 2019-02-21 | 株式会社ダイセル | 積層体、及び前記積層体を備えたフレキシブルデバイス |
US10221090B2 (en) | 2009-10-23 | 2019-03-05 | Nitto Denko Corporation | Transparent substrate |
JP7443699B2 (ja) | 2019-08-30 | 2024-03-06 | 日本ゼオン株式会社 | 接合体の製造方法 |
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- 2007-03-28 WO PCT/JP2007/056630 patent/WO2007114159A1/ja active Application Filing
- 2007-03-28 JP JP2008508560A patent/JPWO2007114159A1/ja active Pending
- 2007-03-28 KR KR1020087023446A patent/KR20080103583A/ko not_active Application Discontinuation
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JPH10193520A (ja) * | 1997-01-07 | 1998-07-28 | Nippon Zeon Co Ltd | 積層体、多層基板、及びこれらの製造方法 |
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JP2004330623A (ja) * | 2003-05-08 | 2004-11-25 | Teijin Ltd | ディスプレイ用に適したガスバリア性高分子積層フィルム |
JP2005139420A (ja) * | 2003-10-15 | 2005-06-02 | Nippon Zeon Co Ltd | 積層体の製造方法 |
JP2005271467A (ja) * | 2004-03-25 | 2005-10-06 | Mitsubishi Plastics Ind Ltd | ガスバリア性積層体 |
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EP2273476A1 (en) * | 2008-04-24 | 2011-01-12 | Nitto Denko Corporation | Transparent substrate |
EP2273476A4 (en) * | 2008-04-24 | 2014-04-23 | Nitto Denko Corp | TRANSPARENT SUBSTRATE |
CN102224005A (zh) * | 2008-11-25 | 2011-10-19 | 住友电气工业株式会社 | 镁合金接合部件 |
US10221090B2 (en) | 2009-10-23 | 2019-03-05 | Nitto Denko Corporation | Transparent substrate |
JP2019025901A (ja) * | 2017-07-28 | 2019-02-21 | 株式会社ダイセル | 積層体、及び前記積層体を備えたフレキシブルデバイス |
JP2019025904A (ja) * | 2017-07-28 | 2019-02-21 | 株式会社ダイセル | 積層体、及び前記積層体を備えたフレキシブルデバイス |
JP2019025902A (ja) * | 2017-07-28 | 2019-02-21 | 株式会社ダイセル | 積層体、及び前記積層体を備えたフレキシブルデバイス |
JP7443699B2 (ja) | 2019-08-30 | 2024-03-06 | 日本ゼオン株式会社 | 接合体の製造方法 |
Also Published As
Publication number | Publication date |
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KR20080103583A (ko) | 2008-11-27 |
TW200740947A (en) | 2007-11-01 |
JPWO2007114159A1 (ja) | 2009-08-13 |
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