WO2014156888A1 - 積層体及びガスバリアフィルム - Google Patents
積層体及びガスバリアフィルム Download PDFInfo
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- WO2014156888A1 WO2014156888A1 PCT/JP2014/057550 JP2014057550W WO2014156888A1 WO 2014156888 A1 WO2014156888 A1 WO 2014156888A1 JP 2014057550 W JP2014057550 W JP 2014057550W WO 2014156888 A1 WO2014156888 A1 WO 2014156888A1
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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
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
- C09D133/04—Homopolymers or copolymers of esters
- C09D133/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, the oxygen atom being present only as part of the carboxyl radical
- C09D133/10—Homopolymers or copolymers of methacrylic acid esters
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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
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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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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D1/00—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
- C23C16/22—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the deposition of inorganic material, other than metallic material
- C23C16/30—Deposition of compounds, mixtures or solid solutions, e.g. borides, carbides, nitrides
- C23C16/40—Oxides
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
- C23C16/22—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the deposition of inorganic material, other than metallic material
- C23C16/30—Deposition of compounds, mixtures or solid solutions, e.g. borides, carbides, nitrides
- C23C16/40—Oxides
- C23C16/403—Oxides of aluminium, magnesium or beryllium
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
- C23C16/22—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the deposition of inorganic material, other than metallic material
- C23C16/30—Deposition of compounds, mixtures or solid solutions, e.g. borides, carbides, nitrides
- C23C16/40—Oxides
- C23C16/405—Oxides of refractory metals or yttrium
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
- C23C16/44—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating
- C23C16/455—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating characterised by the method used for introducing gases into reaction chamber or for modifying gas flows in reaction chamber
- C23C16/45523—Pulsed gas flow or change of composition over time
- C23C16/45525—Atomic layer deposition [ALD]
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
- C23C16/44—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating
- C23C16/455—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating characterised by the method used for introducing gases into reaction chamber or for modifying gas flows in reaction chamber
- C23C16/45523—Pulsed gas flow or change of composition over time
- C23C16/45525—Atomic layer deposition [ALD]
- C23C16/45555—Atomic layer deposition [ALD] applied in non-semiconductor technology
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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
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/724—Permeability to gases, adsorption
- B32B2307/7242—Non-permeable
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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
- B32B2439/00—Containers; Receptacles
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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
- B32B2439/00—Containers; Receptacles
- B32B2439/70—Food packaging
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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
- B32B2439/00—Containers; Receptacles
- B32B2439/80—Medical packaging
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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
- B32B2457/14—Semiconductor wafers
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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
Definitions
- the present invention relates to a laminate including an atomic layer deposition film formed on the outer surface of a substrate by an atomic layer deposition method, and a gas barrier film comprising the laminate.
- a method of forming a thin film on the surface of an object using a vapor phase that makes a substance move at an atomic or molecular level like a gas is a chemical vapor deposition (CVD) method or a physical vapor deposition method (CVD). PVD (Physical Vapor Deposition).
- Typical PVDs include a vacuum deposition method and a sputtering method.
- the sputtering method can generally form a high-quality thin film having high film quality and excellent film thickness uniformity although the apparatus cost is generally high. Therefore, it is widely applied to display devices such as liquid crystal displays.
- CVD is a method of growing a solid thin film by introducing a raw material gas into a vacuum chamber and decomposing or reacting one or more kinds of gases on a substrate with thermal energy.
- decomposing or reacting gas there is also a method using plasma or catalytic reaction in order to promote the reaction during film formation or lower the reaction temperature, respectively, PECVD (Plasma Enhanced CVD), It is called Cat-CVD.
- PECVD Plasma Enhanced CVD
- Cat-CVD Cat-CVD.
- Such CVD is characterized by few film formation defects and is mainly applied to semiconductor device manufacturing processes such as gate insulating film formation.
- ALD Atomic Layer Deposition
- This ALD method is a method in which a substance adsorbed on the surface is formed one layer at a time by a chemical reaction on the surface, and is classified into the category of CVD.
- the ALD method is distinguished from general CVD by so-called CVD (general CVD) in which a thin film is grown by reacting on a base slope using a single gas or a plurality of gases simultaneously. is there.
- CVD general CVD
- the ALD method uses an active gas called a precursor or a precursor and a reactive gas (also called a precursor in the ALD method) alternately, and adsorbs on the substrate surface. It is a special film formation method that grows thin films one by one at the atomic level by the subsequent chemical reaction.
- a specific film formation method of the ALD method is shown below. First, in the surface adsorption on the substrate, if the surface is covered with a certain kind of gas, no further adsorption of that gas occurs. Exhaust the precursor. Subsequently, a reactive gas is introduced, and the precursor is oxidized or reduced to obtain only one layer of a thin film having a desired composition, and then the reactive gas is exhausted. Then, such a process is defined as one cycle, and this cycle is repeated to grow a thin film to form a film. Therefore, in the ALD method, the thin film grows two-dimensionally. In addition, the ALD method has fewer film formation defects than the conventional vacuum deposition method and sputtering as well as general CVD. Therefore, it is expected to be applied to a wide range of fields such as the packaging field for foods and pharmaceuticals and the electronic parts field.
- the ALD method includes a method of using plasma to activate the reaction in the step of decomposing the second precursor and reacting with the first precursor adsorbed on the substrate.
- This method is called plasma activated ALD (PEALD: Plasma Enhanced ALD) or simply plasma ALD.
- ALD method technology was developed in 1974 by Finnish Dr. Proposed by Tuomo Sumtola.
- the ALD method is capable of forming a high-quality and high-density film, it is being applied in the field of semiconductors such as a gate insulating film, and ITRS (International Technology Roadmap for Semiconductors) also describes the ALD method. is there.
- the ALD method does not have a slanting effect (a phenomenon in which sputtered particles are incident on the substrate surface obliquely and cause variations in film formation) compared to other film formation methods, so that film formation is possible if there is a gap for gas to enter. It is. Therefore, the ALD method is applied to MEMS (Micro Electro Mechanical Systems) related to coating of lines and holes on a substrate having a high aspect ratio with a large depth to width ratio, as well as coating of three-dimensional structures. Is expected.
- MEMS Micro Electro Mechanical Systems
- the disadvantage of the ALD method is that it is necessary to use a special material in order to perform the ALD method, and the cost is increased due to this, but the biggest drawback is that the film forming speed is slow. .
- the film formation rate is about 5 to 10 times slower than a film formation method such as normal vacuum deposition or sputtering.
- the target for forming a thin film by the ALD method using the film forming method as described above is a small plate-like substrate such as a wafer and a photomask, or a substrate having a large area and no flexibility such as a glass plate. Or a flexible substrate having a large area such as a film.
- mass production facilities for forming thin films on these substrates have been proposed and put to practical use by various substrate handling methods depending on cost, ease of handling, film formation quality, etc. ing.
- a mass production apparatus for forming a thin film on a substrate for example, a single-wafer type film forming apparatus for supplying a film to a film forming apparatus and forming a film on a wafer, and then replacing the next substrate to form a film again.
- a batch type film forming apparatus that sets a plurality of substrates together and performs the same film formation on all the wafers.
- a mass production apparatus that forms a film on a glass substrate or the like
- an in-line type film forming apparatus that performs film formation at the same time while sequentially transporting the substrate to a portion that is a film formation source.
- a so-called roll-to-roll coating film forming apparatus in which a flexible substrate is mainly unwound from a roll and film is formed while being conveyed, and the substrate is wound on another roll.
- a coating film forming apparatus not only a flexible substrate but also a flexible sheet that can continuously convey a substrate to be formed, or a web coating film that is continuously formed on a tray that is partially flexible. An apparatus is also mentioned.
- Patent Document 1 discloses a technique for realizing a barrier film having excellent barrier properties by performing atomic layer deposition by the ALD method.
- laminates in which an atomic layer deposition film is provided on the outer surface of a substrate by the ALD method are widely known, and these laminates are used for gas barrier films having high gas barrier properties.
- the atomic layer deposited film is easily damaged by an external force. If the atomic layer deposition film is damaged by some external force, a through-hole extending in the film thickness direction of the atomic layer deposition film may be generated depending on the size of the scratch. Thus, when a through-hole in the film thickness direction is generated in the atomic layer deposition film, gas enters and exits from the base material through the through-hole. Therefore, the gas barrier property of the laminate is lowered.
- the present invention has been made in view of such circumstances, and a laminated body having an improved gas barrier property so that an atomic layer deposition film formed on the outer surface of a substrate is not easily damaged by an external force, and the laminated body.
- An object of the present invention is to provide a gas barrier film formed by a body.
- the laminate according to the first aspect of the present invention includes a substrate having a surface, an atomic layer deposition film that covers the surface of the substrate and has a film thickness of 3 nm to 500 nm. , and a overcoat layer covering the atomic layer deposition film, the thickness of the atomic layer deposition film t a, when the thickness of the overcoat layer was t OC, the thickness of the overcoat layer, t a ⁇ satisfy the relationship of t OC ⁇ 50t a.
- the overcoat layer may be composed of a water-soluble polymer and a metal alkoxide.
- the overcoat layer may be made of any of oxide, nitride, and oxynitride having at least one element selected from Si, Al, and Ti.
- overcoat layer may be formed by either wet coating or dry coating techniques.
- the laminate is formed in a film shape.
- the overcoat layer is provided on the outer surface of the atomic layer deposition film covering the substrate, the atomic layer deposition film is hardly damaged by an external force. That is, it is possible to suppress the possibility that a flaw that causes gas to enter and exit in the film thickness direction of the atomic layer deposition film is generated in the atomic layer deposition film. Thereby, while being able to maintain the gas barrier property of a laminated body and the gas barrier film consisting of the laminated body high, the fall of gas barrier property by external force etc. can be prevented.
- FIG. 1 is a cross-sectional view showing the configuration of a laminate in one embodiment of the present invention.
- the laminate 5 includes a base material 1, an undercoat layer (hereinafter referred to as “UC layer”) 2 formed along one outer surface (surface) of the base material 1, and a UC layer. 2, an atomic layer deposition film (hereinafter referred to as “ALD film”) 3 formed on the surface of 2, and an overcoat layer (hereinafter referred to as “OC layer”) 4 covering ALD film 3.
- ALD film atomic layer deposition film
- OC layer overcoat layer
- the substrate 1 is made of a polymer material.
- the polymer material include polymer materials such as polyethylene (PE), polypropylene (PP), polystyrene (PS), polyethylene terephthalate (PET), nylon, and polyether sulfone.
- the thickness of the base material 1 is 12 ⁇ m or more and 200 ⁇ m in consideration of appropriateness as a packaging material for electronic parts such as precision parts and electroluminescent elements, and processing appropriateness as a gas barrier film. The following is preferable.
- the UC layer 2 is provided in order to increase the density of the ALD film 3 formed on the surface of the UC layer 2 and prevent a gap through which gas passes in the film thickness direction of the ALD film 3.
- the precursor that is the raw material of the ALD film 3 can be arranged with high density at the adsorption sites on the surface on which the ALD film 3 is formed, and atomic layer growth close to two-dimensional growth Need to be possible. Therefore, as described above, the UC layer 2 may not be provided as long as the type of polymer material or precursor that can increase the density of the ALD film 3 is used for the base material. That is, an ALD film 3 formed on the surface of the substrate 1 and an OC layer 4 covering the ALD film 3 may be provided.
- the UC layer 2 may contain an inorganic substance, or may have a configuration containing an organic polymer having a functional group to which a precursor of the ALD film 3 is easily bonded.
- the precursor that is the raw material of the ALD film 3 is bonded to the inorganic substance exposed on the surface of the UC layer 2.
- a two-dimensional ALD film 3 growing in the plane direction of the UC layer 2 is generated.
- a gap through which gas permeates in the film thickness direction of the laminate is less likely to be formed, and a laminate having high gas barrier properties can be formed.
- the UC layer 2 contains an organic polymer
- the organic polymer has a functional group that easily binds to the precursor of the ALD film 3. Therefore, the precursors bonded to each functional group are bonded to each other. As a result, a two-dimensional ALD film 3 growing in the plane direction of the UC layer 2 is generated. As a result, a gap through which gas permeates in the film thickness direction of the laminate is less likely to be formed, and a laminate having high gas barrier properties can be formed.
- the ALD film 3 is a film formed by the ALD method.
- the ALD film 3 is made of an inorganic oxide film such as AlO x , TiO x , SiO x , ZnO x , or SnO x , a nitride film or oxynitride film made of these inorganic materials, or an oxide film, nitride film made of other elements, or An oxynitride film may be used. Further, the ALD film 3 may be the above film or a mixed film of elements.
- the thickness of the ALD film 3 is preferably 3 nm or more and 500 nm or less, and more preferably 3 nm or more and 100 nm or less.
- the thickness of the ALD film 3 is smaller than 3 nm, the function as a gas barrier layer cannot be performed sufficiently.
- the thickness of the ALD film 3 is larger than 500 nm, the gas barrier layer is easily cracked or it is difficult to control the optical characteristics.
- the ALD film 3 formed on the surface of the UC layer 2 has an excellent barrier property.
- the ALD film 3 since the ALD film 3 is thin, scratches, pinholes, etc. may occur in the ALD film 3 due to contact between the substrates during winding. In such a case, the gas barrier performance of the laminate is reduced.
- the OC layer 4 is formed as a protective layer on the surface of the ALD film 3 in order to prevent the ALD film 3 from being scratched and pinholes due to contact between the substrates during winding.
- the thickness of the ALD film 3 and t a when the thickness of the OC layer 4 is formed to t OC, the thickness of the OC layer 4 is preferably satisfy the relation of t a ⁇ t OC ⁇ 50t a , it is more preferable to satisfy the relation of t a ⁇ t OC ⁇ 10t a . If the thickness t OC of OC layer 4 is less than t a, it will reach the ALD film 3, can not perform sufficiently function as a protective layer wound by external factors. Further, cracks occur due to internal stress exceeds 50t a, gas barrier properties may deteriorate.
- the thickness of the ALD film 3 t a and the thickness t OC of OC layer 4 is nanometer scale.
- the OC layer 4 may be made of any material (organic material or inorganic material) as long as the above thickness relationship is satisfied, and a wet coating technique may be used as a formation method thereof. Dry coating technology may be used.
- the OC layer 4 is formed of a water-soluble polymer and a metal alkoxide, or one of an oxide, a nitride, and an oxynitride having at least one element selected from Si, Al, and Ti. Is preferably formed.
- the OC layer 4 is an aqueous solution containing a water-soluble polymer and at least one metal alkoxide or a hydrolyzate thereof, or a mixed solution of water and alcohol.
- a coating agent containing as a main ingredient Specifically, for example, a mixed solution is prepared by dissolving a water-soluble polymer in an aqueous solvent and further subjecting the metal alkoxide to hydrolysis directly or in advance.
- the OC layer 4 is formed by coating this solution on the surface of the ALD film 3 and then drying by heating.
- the OC layer 4 can improve gas barrier properties and water vapor barrier properties by being composed of a water-soluble polymer and a metal alkoxide.
- water-soluble polymer used in the coating agent examples include polyvinyl alcohol, polyvinyl pyrrolidone, starch, methyl cellulose, carboxymethyl cellulose, and sodium alginate.
- PVA polyvinyl alcohol
- the PVA here is generally obtained by saponifying polyvinyl acetate.
- PVA for example, complete PVA in which only several percent of acetic acid groups remain can be used from so-called partially saponified PVA in which several tens percent of acetic acid groups remain, and other PVA may be used. .
- the metal alkoxide is a compound represented by a general formula, M (OR) n (M: metal such as Si, Ti, Al, Zr, or alkyl group such as R: CH 3 , C 2 H 5 ).
- M metal such as Si, Ti, Al, Zr, or alkyl group such as R: CH 3 , C 2 H 5 .
- tetraethoxysilane Si (OC 2 H 5 ) 4
- triisopropoxyaluminum Al (Oi-C 3 H 7 ) 3
- tetraethoxysilane and triisopropoxyaluminum are preferable because they are relatively stable in an aqueous solvent after hydrolysis.
- the coating method for the coating agent may be any commonly used wet coating technique.
- Examples of the coating method include coating methods such as a dipping method, a roll coating method, a screen printing method, and a spray method. It is preferable to use a method capable of coating the ALD film 3 in a non-contact manner.
- the OC layer 4 is formed of any one of oxide, nitride, and oxynitride having at least one element selected from Si, Al, and Ti, for example, SiO x , AlO x , TiO x Among these oxide films, nitride films containing the above elements, oxynitride films, or inorganic oxide films, inorganic nitride films, inorganic acids containing other elements in addition to the above elements, such as Sn, Ta, Zr, etc. A nitride film or a mixed film thereof is preferable.
- the OC layer 4 is composed of these inorganic films, thereby improving durability and further improving barrier properties.
- any one of tridimethylaminosilane (SiH [N (CH 3 ) 2 ] 3 ), trimethylaluminum (TMA), and titanium tetrachloride (TiCl 4 ) is used. Although it is preferable to use, it is not particularly limited to these.
- the inorganic film of the OC layer 4 is formed using a dry coating technique.
- a layer formed by using any one of PVD and CVD is preferable.
- PVD examples include a resistance heating method, an electron beam evaporation method, and a sputtering method.
- Examples of CVD include a thermal CVD method, a photo CVD method, and a plasma CVD method, and it is desirable to use any one of these methods.
- the ALD film 3 does not come into direct contact with other base materials when winding. That is, if the ALD film 3 is the outermost surface, the OC layer 4 having a thickness larger than that of the ALD film 3 is formed on the outermost surface even if an external force large enough to generate a through hole in the film thickness direction acts on the surface of the laminate. Since it is formed, there is no possibility that a through-hole is generated in the film thickness direction. Therefore, by forming the OC layer 4 on the surface of the ALD film 3, the gas barrier property of the laminate can be improved.
- the thickness of the OC layer 4 is not particularly limited as long as it satisfies the relationship with the thickness of the ALD film (t a ⁇ t OC ⁇ 50 t a ).
- the thickness of the ALD film t a ⁇ t OC ⁇ 50 t a .
- the thickness of the OC layer 4 is not particularly limited as long as it satisfies the relationship with the thickness of the ALD film (t a ⁇ t OC ⁇ 50 t a ).
- the thickness of the OC layer 4 is not particularly limited as long as it satisfies the relationship with the thickness of the ALD film (t a ⁇ t OC ⁇ 50 t a ).
- the thickness of the OC layer 4 is not particularly limited as long as it satisfies the relationship with the thickness of the ALD film (t a ⁇ t OC ⁇ 50 t a ).
- the laminate 1 (however, the UC layer 2 is an arbitrary layer) composed of the base material 1, the UC layer 2, the ALD film 3, and the OC layer 4 has the OC layer 4 formed on the surface of the ALD film 3.
- the ALD film 3 is hardly damaged by an external force. That is, the possibility that the ALD film 3 is damaged such that gas enters and exits in the film thickness direction of the ALD film 3 can be suppressed. Therefore, it can use as a gas barrier film by forming the laminated body 1 in a film form.
- an Al 2 O 3 film is formed on the upper surface of a UC layer formed on the surface of a 100 ⁇ m-thick polyethylene terephthalate film (hereinafter referred to as “PET film”), which is a film-like polymer substrate. Filmed.
- PET film polyethylene terephthalate film
- TMA trimethylaluminum
- the O 2 and N 2 as a process gas
- the O 2 and N 2 as the purge gas
- the O 2 as the reaction gas and plasma discharge gas was supplied to each deposition chamber.
- the processing capacity (pressure in the film formation chamber during film formation) at that time was 10 to 50 Pa.
- a 13.56 MHz power source was used as a plasma excitation power source, and plasma discharge was performed in an ICP (Inductive Couple Plasma) mode.
- the supply time of TMA and process gas was 60 msec, the supply time of purge gas was 10 msec, and the supply time of reaction gas / discharge gas was 10 msec. Then, plasma discharge was generated in the ICP mode simultaneously with the supply of the reaction gas / discharge gas. The output power of the plasma discharge at this time was 250 watts. Further, as gas purge after plasma discharge, purge gases O 2 and N 2 were supplied for 10 msec. The film forming temperature at this time was 90 ° C.
- the deposition rate of Al 2 O 3 under the above cycle conditions was as follows. That is, since the unit film formation rate is about 1.4 mm / cycle, when the film formation process of 140 cycles was performed to form a film with a film thickness of about 20 nm, the total film formation time was about 84 min. It was.
- TiO 2 Atomic Layer Deposition Film 3
- a TiO 2 film was formed by the ALD method on the upper surface of a UC layer formed on the surface of a 100 ⁇ m-thick PET film, which is a film-like polymer substrate.
- titanium tetrachloride TiCl 4
- N 2 was supplied as a process gas
- O 2 and N 2 were supplied as purge gases
- O 2 was supplied as a reaction gas and plasma discharge gas to the film formation chamber.
- the processing capacity at that time was 10 to 50 Pa.
- the plasma excitation power source was a 13.56 MHz power source, and plasma discharge was performed in the ICP mode.
- the supply time of each gas was set to 1 sec for TiCl 4 and the process gas, 60 sec for the purge gas, and 5 sec for the reactive gas / discharge gas. Then, plasma discharge was generated in the ICP mode simultaneously with the supply of the reaction gas / discharge gas. The output power of the plasma discharge at this time was 250 watts. Further, as gas purge after plasma discharge, purge gases O 2 and N 2 were supplied for 4 seconds. The film forming temperature at this time was 90 ° C.
- the film formation rate of TiO 2 under the above cycle conditions was as follows. That is, since the unit film formation rate is about 1.1 liters / cycle, when the film formation process of 176 cycles is performed to form a film with a film thickness of about 20 nm, the total film formation time is about 253 min. It was.
- Example 1-1 an organic polymer containing polymethacrylic acid ester is formed on a PET film substrate having a thickness of 100 ⁇ m using a wet coating technique so that the film thickness after heating and drying is about 0.34 ⁇ m.
- An undercoat (UC) layer formed by coating the surface of the substrate with a solution consisting of the above, and drying by heating, a barrier layer (ALD film) having an Al 2 O 3 film thickness of about 20 nm, and a film thickness of about 50 nm
- the gas barrier property was measured using a sample prepared by laminating an overcoat (OC) layer in this order.
- the OC layer of this example is coated with a solution of a water-soluble polymer and a metal alkoxide on the surface of the barrier layer using a wet coating technique so that the film thickness after heating and drying is about 50 nm, and then heated. Dried to form.
- the measured value of the WVTR of the sample manufactured in this example is 2.4 ⁇ 10 ⁇ 3 [g / m 2 / day] before winding, and 3.3 ⁇ 10 ⁇ 3 [g / m 2 ] after winding. / Day].
- Example 1-2 a UC layer formed by the same method as in Example 1-1 on a PET film substrate having a thickness of 100 ⁇ m, a barrier layer having a TiO 2 film thickness of about 20 nm, and Example 1 Gas barrier properties were measured using a sample formed by laminating an OC layer having a film thickness of about 50 nm formed in the same manner as in -1 in this order.
- the measured value of WVTR of the sample manufactured in this example is 2.0 ⁇ 10 ⁇ 3 [g / m 2 / day] before winding, and 3.1 ⁇ 10 ⁇ 3 [g / m 2 ] after winding. / Day].
- Example 2-1 a UC layer formed by the same method as in Example 1-1 and a barrier layer having an Al 2 O 3 film thickness of about 20 nm on a PET film substrate having a thickness of 100 ⁇ m.
- the gas barrier properties were measured using a sample prepared by laminating an OC layer having a thickness of about 100 nm in this order.
- the OC layer of this embodiment is formed of a SiO 2 film that is formed using a dry coating technique.
- the measured value of the WVTR of the sample manufactured in this example is 2.9 ⁇ 10 ⁇ 3 [g / m 2 / day] before winding and 3.0 ⁇ 10 ⁇ 3 [g / m 2 after winding. / Day].
- Example 2-2 a UC layer formed by the same method as in Example 1-1 on a PET film substrate having a thickness of 100 ⁇ m, a barrier layer having a thickness of about 20 nm of TiO 2 , and The gas barrier property was measured using a sample formed by laminating an OC layer having a thickness of about 100 nm formed in the same manner as in Example 2-1.
- the measured value of the WVTR of the sample manufactured in this example is 2.7 ⁇ 10 ⁇ 3 [g / m 2 / day] before winding, and 2.9 ⁇ 10 ⁇ 3 [g / m 2 ] after winding. / Day].
- Comparative Example 1-1 a UC layer formed by the same method as in Example 1-1 on a PET film substrate having a thickness of 100 ⁇ m, a barrier layer having an Al 2 O 3 film thickness of about 20 nm, and The gas barrier properties were measured using samples prepared by laminating the layers in this order.
- the OC layer 4 is not laminated.
- the measured value of WVTR of the sample of Comparative Example 1-1 was 4.0 ⁇ 10 ⁇ 3 [g / m 2 / day] before winding, and 1.4 ⁇ 10 ⁇ 1 [g / m 2 ] after winding. / Day].
- Comparative Example 1-2 a UC layer formed by the same method as in Example 1-1 on a PET film substrate having a thickness of 100 ⁇ m and a barrier layer having a thickness of about 20 nm of TiO 2 were formed. Gas barrier properties were measured using samples that were sequentially laminated. In the comparative example 1-2, the OC layer 4 is not laminated as in the comparative example 1-1.
- the measured value of WVTR of the sample of Comparative Example 1-2 was 3.6 ⁇ 10 ⁇ 3 [g / m 2 / day] before winding, and 2.0 ⁇ 10 ⁇ 1 [g / m 2 ] after winding. / Day].
- Comparative Example 2-1 a UC layer formed by the same method as in Example 1-1 on a PET film substrate having a thickness of 100 ⁇ m, a barrier layer having a thickness of Al 2 O 3 of about 20 nm, and The gas barrier property was measured using a sample prepared by laminating an OC layer having a thickness of about 10 nm in this order.
- the OC layer of this embodiment is formed of a SiO 2 film that is formed using a dry coating technique.
- Comparative Example 2-1 when the thickness of the barrier layer is t a and the thickness of the OC layer 4 is t OC , the thickness of the OC layer in Comparative Example 2-1 is t a ⁇ t OC ⁇ 50 t a Thinner than the range.
- the measured value of WVTR of the sample of Comparative Example 2-1 was 5.0 ⁇ 10 ⁇ 3 [g / m 2 / day] before winding, and 9.7 ⁇ 10 ⁇ 1 [g / m 2 ] after winding. / Day].
- Comparative Example 2-2 a UC layer formed by the same method as in Example 1-1 on a PET film substrate having a thickness of 100 ⁇ m and a barrier layer having a thickness of about 20 nm of TiO 2 were compared. Gas barrier properties were measured using a sample formed by laminating an OC layer having a thickness of about 10 nm formed in the same manner as in Example 2-1 in this order.
- the measured value of WVTR of Comparative Example 2-2 is 6.0 ⁇ 10 ⁇ 3 [g / m 2 / day] before winding, and 1.0 ⁇ 10 ⁇ 1 [g / m 2 / day] after winding. ⁇ Met.
- Comparative Example 3-1 a UC layer formed by the same method as in Example 1-1 on a PET film substrate having a thickness of 100 ⁇ m, a barrier layer having an Al 2 O 3 film thickness of about 20 nm, and The gas barrier properties were measured using a sample formed by the same method as in Example 1-1 and the OC layer 4 having a thickness of about 1100 nm laminated in this order.
- the thickness of the barrier layer t a the thickness of the OC layer 4 was set to t OC
- the thickness of the OC layer 4 of Comparative Example 3-1 is thicker than the range of t a ⁇ t OC ⁇ 50t a .
- the measured value of WVTR of Comparative Example 3-1 was 5.5 ⁇ 10 ⁇ 3 [g / m 2 / day] before winding, and 1.1 ⁇ 10 ⁇ 1 [g / m 2 / day] after winding. ⁇ Met.
- Comparative Example 3-2 a UC layer formed by the same method as in Example 1-1 on a PET film substrate having a thickness of 100 ⁇ m, a barrier layer having a TiO 2 film thickness of about 20 nm, and a comparative example Gas barrier properties were measured using a sample formed by the same method as in 3-1, and an OC layer 4 having a thickness of about 1100 nm stacked in this order.
- the measured value of WVTR of Comparative Example 3-2 was 5.0 ⁇ 10 ⁇ 3 [g / m 2 / day] before winding, and 1.2 ⁇ 10 ⁇ 1 [g / m 2 / day] after winding. ⁇ Met.
- the barrier property was improved because the laminate had the OC layer. Therefore, according to the laminated body of the present invention, by providing the OC layer on the surface of the ALD film (barrier layer), the gas barrier of the laminated body is not significantly affected by stress due to environmental changes or the like and mechanical external force. Sexuality can be increased.
- the laminate of the present invention is effective not only for the use of electronic components such as electroluminescence elements (EL elements), liquid crystal displays, and semiconductor wafers, but also for packaging films for pharmaceuticals and food, packaging films for precision parts, etc. Can be used.
- EL elements electroluminescence elements
- liquid crystal displays liquid crystal displays
- semiconductor wafers but also for packaging films for pharmaceuticals and food, packaging films for precision parts, etc. Can be used.
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Abstract
Description
本願は、2013年3月27日に、日本に出願された特願2013-066166号に基づき優先権を主張し、その内容をここに援用する。
そのため、食品及び医薬品等の包装分野及び電子部品分野など幅広い分野への応用が期待されている。
具体的には、例えば、水系溶媒に水溶性高分子を溶解させ、さらに金属アルコキシドを直接、或いは予め加水分解させるなど処理を行い混合した溶液を準備する。この溶液をALD膜3の表面にコーティング後、加熱乾燥することで、OC層4は形成される。OC層4は、水溶性高分子と金属アルコキシドとから構成されることにより、ガスバリア性及び水蒸気バリア性を向上することができる。
まず、フィルム状の高分子基材である、厚み100μmのポリエチレンテレフタラートフィルム(以下「PETフィルム」という。)の表面に形成されたUC層の上面に、ALD法によってAl2O3膜を成膜した。このとき、原料ガスはトリメチルアルミニウム(TMA)を用いた。また、原料ガスと同時に、プロセスガスとしてO2とN2とを、パージガスとしてO2とN2とを、反応ガス兼プラズマ放電ガスとしてO2をそれぞれ成膜室へ供給した。その際の処理能力(成膜時の成膜室内の圧力)は10~50Paとした。さらに、プラズマ励起用電源は13.56MHzの電源を用い、ICP(Inductively Couple Plasma)モードによってプラズマ放電を実施した。
まず、フィルム状の高分子基材である、厚み100μmのPETフィルムの表面に形成されたUC層の上面に、ALD法によってTiO2膜を成膜した。このとき、原料ガスは四塩化チタン(TiCl4)を用いた。また、原料ガスと同時に、プロセスガスとしてN2を、パージガスとしてO2とN2を、反応ガス兼プラズマ放電ガスとしてO2をそれぞれ成膜室へ供給した。その際の処理能力は10~50Paとした。さらに、プラズマ励起用電源は13.56MHzの電源を用い、ICPモードによってプラズマ放電を実施した。
次に、上記の実施形態に基づいて実現したOC層を備えた積層体を巻き取りローラに接触させて巻取り収納する前後の水蒸気透過率(以下、WVTRという)の実験結果について、幾つかの実施例を説明する。なお、ここでは水蒸気透過度測定装置(モダンコントロール社製 MOCON Aquatran(登録商標)もしくはMOCON Prematran(登録商標))を用いて、40℃/90%RHの雰囲気で水蒸気透過率を測定した。以下の表1は、積層体の巻取り前後のWVTRを比較した表である。
実施例1-1では、厚み100μmのPETフィルムの基材の上に、ウェットコーティング技術を用いて、加熱乾燥後の膜厚が約0.34μmとなるようにポリメタクリル酸エステルを含む有機高分子からなる溶液を基材の表面にコーティングし、加熱乾燥して形成したアンダーコート(UC)層と、Al2O3の膜厚が約20nmのバリア層(ALD膜)と、膜厚が約50nmのオーバーコート(OC)層とをこの順に積層して作製された試料を用いてガスバリア性の測定を行った。本実施例のOC層は、ウェットコーティング技術を用いて、加熱乾燥後の膜厚が約50nmとなるように水溶性高分子と金属アルコキシドとからなる溶液をバリア層の表面にコーティングした後、加熱乾燥して形成した。本実施例で作製した試料のWVTRの測定値は、巻取り前は2.4×10-3〔g/m2/day〕、巻取り後は3.3×10-3〔g/m2/day〕であった。
実施例1-2では、厚み100μmのPETフィルムの基材の上に、実施例1-1と同様の方法で形成されたUC層と、TiO2膜厚が約20nmバリア層と、実施例1-1と同様の方法で形成され膜厚が約50nmのOC層とをこの順に積層して作製された試料を用いてガスバリア性の測定を行った。本実施例で作製した試料のWVTRの測定値は、巻取り前は2.0×10-3〔g/m2/day〕、巻取り後は3.1×10-3〔g/m2/day〕であった。
実施例2-1では、厚み100μmのPETフィルムの基材の上に、実施例1-1と同様の方法で形成されたUC層と、Al2O3膜厚が約20nm成膜したバリア層と、膜厚が約100nmのOC層とをこの順に積層して作製された試料を用いてガスバリア性の測定を行った。本実施例のOC層は、ドライコーティング技術を用いて成膜されるSiO2膜で形成される。本実施例で作製した試料のWVTRの測定値は、巻取り前は2.9×10-3〔g/m2/day〕、巻取り後は3.0×10-3〔g/m2/day〕であった。
実施例2-2では、厚み100μmのPETフィルムの基材の上に、実施例1-1と同様の方法で形成されたUC層と、TiO2の膜厚が約20nmのバリア層と、実施例2-1と同様の方法で形成され膜厚が約100nmのOC層とをこの順に積層して作製された試料を用いてガスバリア性の測定を行った。本実施例で作製した試料のWVTRの測定値は、巻取り前は2.7×10-3〔g/m2/day〕、巻取り後は2.9×10-3〔g/m2/day〕であった。
次に、表1を参照しながら比較例について説明する。
比較例1-1では、厚み100μmのPETフィルムの基材の上に、実施例1-1と同様の方法で形成されたUC層と、Al2O3の膜厚が約20nmのバリア層とをこの順に積層して作製された試料を用いてガスバリア性の測定を行った。なお、比較例1-1ではOC層4が積層されていない。比較例1-1の試料のWVTRの測定値は、巻取り前は4.0×10-3〔g/m2/day〕、巻取り後は1.4×10-1〔g/m2/day〕であった。
比較例1-2では、厚み100μmのPETフィルムの基材の上に、実施例1-1と同様の方法で形成されたUC層と、TiO2の膜厚が約20nmのバリア層とをこの順に積層して作製された試料を用いてガスバリア性の測定を行った。なお、比較例1-2でも、比較例1-1と同様にOC層4が積層されていない。比較例1-2の試料のWVTRの測定値は、巻取り前は3.6×10-3〔g/m2/day〕、巻取り後は2.0×10-1〔g/m2/day〕であった。
比較例2-1では、厚み100μmのPETフィルムの基材の上に、実施例1-1と同様の方法で形成されたUC層と、Al2O3の膜厚が約20nmのバリア層と、膜厚が約10nmのOC層とをこの順に積層して作製された試料を用いてガスバリア性の測定を行った。本実施例のOC層は、ドライコーティング技術を用いて成膜されるSiO2膜で形成される。比較例2-1では、のバリア層の膜厚をta、OC層4の膜厚をtOCとしたとき、比較例2-1のOC層の膜厚はta<tOC<50taの範囲よりも薄い。比較例2-1の試料のWVTRの測定値は、巻取り前は5.0×10-3〔g/m2/day〕、巻取り後は9.7×10-1〔g/m2/day〕であった。
比較例2-2では、厚み100μmのPETフィルムの基材の上に、実施例1-1と同様の方法で形成されたUC層と、TiO2の膜厚が約20nmのバリア層と、比較例2-1と同様の方法で形成され膜厚が約10nmのOC層とをこの順に積層して作製された試料を用いてガスバリア性の測定を行った。比較例2-2のWVTRの測定値は、巻取り前は6.0×10-3〔g/m2/day〕、巻取り後は1.0×10-1〔g/m2/day〕であった。
比較例3-1では、厚み100μmのPETフィルムの基材の上に、実施例1-1と同様の方法で形成されたUC層と、Al2O3の膜厚が約20nmのバリア層と、実施例1-1と同様の方法で形成され膜厚が約1100nmのOC層4とをこの順に積層した試料を用いてガスバリア性の測定を行った。バリア層の膜厚をta、OC層4の膜厚をtOCとしたとき、比較例3-1のOC層4の膜厚はta<tOC<50taの範囲内よりも厚い。比較例3-1のWVTRの測定値は、巻取り前は5.5×10-3〔g/m2/day〕、巻取り後は1.1×10-1〔g/m2/day〕であった。
比較例3-2では、厚み100μmのPETフィルムの基材の上に、実施例1-1と同様の方法で形成されたUC層と、TiO2膜厚が約20nmのバリア層と、比較例3-1と同様の方法で形成され膜厚が約1100nmのOC層4とをこの順に積層した試料を用いてガスバリア性の測定を行った。比較例3-2のWVTRの測定値は、巻取り前は5.0×10-3〔g/m2/day〕、巻取り後は1.2×10-1〔g/m2/day〕であった。
以上のように、積層体がOC層を有することで、バリア性が向上していることが確認された。よって、本発明の積層体によれば、ALD膜(バリア層)の表面にOC層を設けることにより、環境変化等などによるストレスや機械的な外力による影響をあまり受けずに、積層体のガスバリア性を高くすることができる。
2・・・アンダーコート層(UC層)
3・・・原子層堆積膜(ALD膜)
4・・・オーバーコート層(OC層)
5・・・積層体
Claims (5)
- 表面を有する基材と、
前記基材の前記表面を覆い、その膜厚が3nm以上500nm以下である原子層堆積膜と、
前記原子層堆積膜を覆うオーバーコート層と、を備える積層体であって、
前記原子層堆積膜の厚みをta、前記オーバーコート層の厚みをtOCとしたとき、前記オーバーコート層の厚みが、ta<tOC<50taの関係を満たす積層体。 - 請求項1に記載の積層体であって、
前記オーバーコート層は、水溶性高分子と金属アルコキシドとからなる積層体。 - 請求項1に記載の積層体であって、
前記オーバーコート層は、Si、Al、Tiから選択される少なくとも一の元素を有する酸化物、窒化物、酸窒化物のうちいずれかからなる積層体。 - 請求項1に記載の積層体であって、
前記オーバーコート層は、ウェットコーティングまたはドライコーティングのいずれかの技術によって形成された積層体。 - 請求項1から4のいずれか一項に記載の積層体がフィルム状に形成されたガスバリアフィルム。
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JP2016155352A (ja) * | 2015-02-26 | 2016-09-01 | 凸版印刷株式会社 | ガスバリア性フィルムの製造方法及びガスバリア性フィルム |
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CN110095829A (zh) * | 2019-05-05 | 2019-08-06 | 佛山市顺德区恒辉制镜有限公司 | 一种太阳能聚热发电镜子生产工艺 |
KR20230000067U (ko) | 2021-06-30 | 2023-01-06 | 주식회사 히라노코리아 | 과일탈피장치 |
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US11005065B2 (en) | 2015-12-28 | 2021-05-11 | Toppan Printing Co., Ltd. | Laminate comprising tantalum oxide and method of producing the same, gas barrier film and method of producing the same, and organic light-emitting element |
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JPWO2019151495A1 (ja) * | 2018-02-02 | 2021-02-12 | 凸版印刷株式会社 | ガスバリア性フィルム及びその製造方法 |
WO2019151495A1 (ja) * | 2018-02-02 | 2019-08-08 | 凸版印刷株式会社 | ガスバリア性フィルム及びその製造方法 |
JP7287284B2 (ja) | 2018-02-02 | 2023-06-06 | 凸版印刷株式会社 | ガスバリア性フィルム及びその製造方法 |
Also Published As
Publication number | Publication date |
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JP6477462B2 (ja) | 2019-03-06 |
EP2979859A4 (en) | 2016-11-02 |
CN105263704A (zh) | 2016-01-20 |
JPWO2014156888A1 (ja) | 2017-02-16 |
US10457828B2 (en) | 2019-10-29 |
TW201442884A (zh) | 2014-11-16 |
EP2979859A1 (en) | 2016-02-03 |
KR20150135341A (ko) | 2015-12-02 |
KR102197243B1 (ko) | 2021-01-04 |
US20160009942A1 (en) | 2016-01-14 |
TWI680882B (zh) | 2020-01-01 |
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