WO2005092607A1 - ガスバリア性積層体 - Google Patents
ガスバリア性積層体 Download PDFInfo
- Publication number
- WO2005092607A1 WO2005092607A1 PCT/JP2005/005189 JP2005005189W WO2005092607A1 WO 2005092607 A1 WO2005092607 A1 WO 2005092607A1 JP 2005005189 W JP2005005189 W JP 2005005189W WO 2005092607 A1 WO2005092607 A1 WO 2005092607A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- resin
- barrier laminate
- gas barrier
- film
- layer
- Prior art date
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- Y10T428/31681—Next to polyester, polyamide or polyimide [e.g., alkyd, glue, or nylon, etc.]
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31786—Of polyester [e.g., alkyd, etc.]
Definitions
- the present invention relates to a gas-barrier laminate, and more particularly, to a gas-barrier layer, which is excellent in gas-barrier layer adhesion and printability (particularly, gradation printability).
- the present invention relates to a gasoline laminated body which is excellent and has excellent adhesion between a plastic substrate and an inorganic thin film when subjected to hot water treatment and excellent gaseous noriness.
- a gas barrier laminate having a plastic substrate as a base material and an inorganic thin film of aluminum oxide, magnesium oxide, silicon oxide or the like formed on the surface thereof by a vapor deposition method, a sputtering method, a CVD method, or an ion plating method is known. It is widely used in the packaging of articles that need to block various gases such as water vapor and oxygen, and in the packaging of foods, industrial supplies and pharmaceuticals to prevent deterioration. These gas barrier laminates have recently been used as components of transparent conductive sheets used in liquid crystal display elements, solar cells, electromagnetic wave shields, touch panels, EL substrates, color filters, etc., in addition to packaging applications. I have. Further, the gas barrier laminate described above generally has good printability due to good wettability of the inorganic thin film, and is widely used as a printing packaging material.
- the gas barrier laminate manufactured by the above-described method may be rubbed with an inorganic thin film in a later laminating step or a printing step, or may be folded in a bag making step. Defects occur in the inorganic thin film when bent, and there is a problem in that gas barrier properties are reduced.
- the possibility of defects occurring in the inorganic thin film is increased, and the gas barrier properties may be significantly reduced.
- the gas barrier property is greatly reduced by the subsequent hot water treatment. is there.
- a method of providing a transparent primer layer made of a resin having a glass transition point of 40 ° C or higher on the surface of the inorganic thin film layer for example, see Patent Document 2
- a method of providing an aqueous anchor layer for example, see Patent Document 3
- a method of providing a layer formed of an aqueous resin containing silicon oxide or an aqueous emulsion for example, see Patent Document 4
- a glass transition temperature of 60 to 80 ° C and a molecular weight of 10,000
- a method of providing a primer layer composed of 20000 polyester resin, polyurethane resin or nitrocellulose resin for example, see Patent Document 5
- a method of providing a coating layer composed of organic polymer and inorganic fine powder for example, see Patent Document 6)
- a resin coating layer such as urethane and Z or a vinyl chloride-vinyl acetate
- the solvent of the printing ink may invade the resin coating layer to bleed the ink, or the resin coating layer may have poor wettability. This causes problems such as repelling the printing ink, and causes poor appearance in printing, especially in gradation printing.
- the adhesion strength between the plastic substrate and the inorganic thin film is poor, hand-cutting properties may be poor.
- Patent Document 1 JP-A-2-299826
- Patent Document 2 JP-A-5-269914
- Patent Document 3 Japanese Patent Application Laid-Open No. 5-309777
- Patent Document 4 JP-A-5-9317
- Patent Document 5 JP-A-7-137192
- Patent Document 6 JP-A-10-71663
- Patent Document 7 JP 2001-270026 A Disclosure of the invention
- an object of the present invention is to provide excellent printability (particularly, gradation printability), excellent gas barrier properties even when printing is performed, and excellent compatibility with plastic substrates when subjected to retort treatment.
- An object of the present invention is to provide a gas barrier laminate having excellent adhesion to an inorganic thin film.
- the present inventors have conducted intensive studies to solve the above problems, and as a result, applied a coating agent containing a specific polyurethane-based resin and a polyester-based resin to an inorganic thin film to form a coating layer. It has been found that, by providing the inorganic thin film, the barrier property and adhesion of the inorganic thin film can be improved, and damage due to the printing ink pigment can be prevented, so that printing with good appearance can be performed. Furthermore, a coating layer having a specific hardness is provided on the surface of the inorganic thin film, and / or the ratio of the number of carbons derived from the carboxy group to the number of carbons constituting the surface of the coating layer is within a specific range.
- the coating layer prevents damage to the inorganic thin film due to the printing ink, and the coating layer reduces stress and improves the bondability, maintaining the barrier properties of the inorganic thin film after hot water treatment. I found what I can do. The present invention has been completed based on the above findings.
- the first gist of the present invention is to provide a plastic substrate (A), an inorganic thin film (B) formed on at least one surface of the plastic substrate (A), and an inorganic thin film (B).
- a gas barrier laminate comprising a coating layer (C) formed by applying a coating agent on the surface, wherein the coating agent is a polyester-based resin having a molecular weight of 3000-15,000 (cl)
- the coating agent is a polyester-based resin having a molecular weight of 3000-15,000 (cl)
- Gas barrier properties characterized by containing a weight ratio of 5Z95 to 95Z5 and a polyurethane resin (c2) having a molecular weight of 8000 to 30000, and the oxygen permeability of the gas barrier laminate is 25 fmol / m 2 / s / Pa or less.
- the second gist of the present invention is that a plastic substrate (A), an inorganic thin film (B) formed on at least one side of the plastic substrate (A), and an inorganic thin film (B)
- a gas barrier laminate comprising a coating layer (C) formed on the surface, and a hardness of the coating layer (C) measured by a nanoindentation method in the atmosphere of 23 ° C of 0.1-0. 5 GPa, a gas barrier laminate consisting of an unstretched polypropylene film with a thickness of 60 am laminated on the coating layer (C),
- the gas barrier laminate is characterized in that the oxygen permeability of the gas barrier laminate after performing a hot water treatment at 120 ° C. for 30 minutes is 50 fmol / m 2 / s / Pa or less.
- a third gist of the present invention resides in that a plastic substrate (A), an inorganic thin film (B) formed on at least one side of the plastic substrate (A), and an inorganic thin film (B).
- a gas barrier laminate consisting of a coating layer (C) formed on the surface and a hardness of the coating layer (C) measured by the nano indentation method in water at 23 ° C of 0.03-0.5 GPa.
- the gas barrier laminate obtained by laminating an unstretched polypropylene film with a thickness of 60 am on the coating layer (C) is subjected to a hot water treatment at 120 ° C for 30 minutes.
- a gas barrier laminate characterized by having a body oxygen permeability of 50 fmol / m 2 / s / Pa or less.
- a fourth gist of the present invention resides in that a plastic substrate (A), an inorganic thin film (B) formed on at least one surface of the plastic substrate (A), and an inorganic thin film (B) A gas barrier laminate comprising a coating layer (C) formed on the surface, wherein the ratio of the number of carbons derived from carboxyl groups to the number of carbons constituting the surface of the coating layer (C) is 0.
- a gas barrier laminate consisting of an unstretched polypropylene film with a thickness of 60 ⁇ m laminated on the coating layer (C), subjected to hot water treatment at 120 ° C for 30 minutes
- the gas barrier laminate has a oxygen permeability of 50 fmol / m 2 / s / Pa or less after the gas barrier laminate.
- the gas barrier laminate of the present invention is excellent in printability (particularly gradation printability), excellent in gas barrier properties even when printed, and excellent when subjected to hot water treatment. It has excellent adhesion and gas barrier properties between the film and the inorganic thin film.
- the gas barrier laminate of the present invention comprises a plastic substrate (A), an inorganic thin film (B) formed on at least one side of the plastic substrate (A), and a surface of the inorganic thin film (B). And a coating layer (C) formed by applying a coating agent.
- the plastic constituting the plastic substrate (A) used in the present invention includes ordinary plastics. There is no particular limitation as long as it can be used as a packaging material.
- Polyolefins such as homopolymers or copolymers of ethylene, propylene, butene, etc., amorphous polyolefins such as cyclic polyolefins, polyethylene terephthalate, polyethylene 1,6- Polyesters such as naphthalate, polyamides such as nylon 6, nylon 66, nylon 12, and copolymerized nylon (hereinafter, nylon may be a representative example), ethylene-vinyl alcohol copolymer (ethylene-vinyl acetate copolymer) (Polymerized hydrolyzate, EVOH), polyimide, polyetherimide, polysanolephon, polyethenoresanolephone, polyethenolethenoleketone, polycarbonate (PC), polybutyral, polyarylate, fluororesin, atalylate Resin
- biodegradable resin examples include starch / polyprolatetaton (for example, “Mastarby Z” sold by Nippon Gosei Co., Ltd.), polyproprolatetatone (for example, “Cellgroen” manufactured by Daicel Chemical Industries), and polyethylene succinate (produced by Nippon Shokubai).
- starch / polyprolatetaton for example, "Mastarby Z” sold by Nippon Gosei Co., Ltd.
- polyproprolatetatone for example, “Cellgroen” manufactured by Daicel Chemical Industries
- polyethylene succinate produced by Nippon Shokubai
- cellulose acetate eg, “Cell Green PCA” manufactured by Daicel Chemical Industries, Ltd.
- chemically modified starch Such as biodegradable resin of natural product use system of "cone Paul” or the like of the present corn sold by the company, and the like.
- polyester, polyamide, polyolefin, ethylene-vinyl alcohol copolymer and biodegradable resin are preferable.
- the plastic substrate (A) in the present invention is formed using the above-mentioned raw materials, and may be an unstretched substrate or a stretched substrate. Also, it may be laminated with other plastic substrates.
- the plastic substrate (A) can be produced by a conventionally known general method, which is preferable for a substrate formed into a film in terms of productivity of forming a thin film. For example, a raw resin is supplied to an extruder, melted, extruded through an annular die or T die, and quenched to produce a substantially amorphous, unoriented unstretched film.
- This unstretched film is uniaxially stretched, tenter-type sequential biaxial stretching, tenter-type simultaneous biaxial stretching, tubular
- a film stretched in at least the uniaxial direction can be produced.
- the thickness of the film as the plastic substrate (A) is determined according to the mechanical strength, flexibility, transparency, and application as the substrate of the laminated structure of the present invention. It is selected in the range of 500 xm, preferably 10-200 zm.
- the width and length of the film are not particularly limited, and can be appropriately selected depending on the application.
- An inorganic thin film (B) is formed on the plastic substrate (A). However, to improve the adhesion between the inorganic thin film (B) and the plastic substrate (A), the inorganic thin film (B) is formed on the plastic substrate (A). It is preferable to provide an anchor coat layer on the surface.
- the anchor coat layer is usually formed by applying a coating solution containing an anchor coat agent by in-line coating or off-line coating.
- the anchor coating agent examples include a solvent-soluble or water-soluble polyester resin, an isocyanate resin, a urethane resin, an acrylic resin, a vinyl alcohol resin, an ethylene vinyl alcohol resin, a vinyl modified resin, an epoxy resin, an oxazoline group-containing resin, a modified styrene resin, Modified silicone resins, copolymer resins thereof, alkyl titanates and the like are exemplified, and two or more of these may be used in combination.
- the anchor coat layer is made of at least one resin selected from the group consisting of a polyester resin, a urethane resin, an acrylic resin, an alkoxysilyl group-containing resin, an oxazoline group-containing resin, and a copolymer resin thereof. It is preferably formed.
- the thickness of the anchor coat layer is usually 0.005 to 5 ⁇ m, preferably 0.01 to 1 ⁇ m. If the thickness of the anchor coat layer is more than 5 / im, the slipperiness is deteriorated, and the internal stress of the anchor coat layer makes it easy to peel off from the base film or sheet.If the thickness is less than 0.005 zm, the anchor coat layer May not be uniform. Before coating, the surface of the base film may be subjected to chemical treatment or discharge treatment in order to improve the coating properties and adhesion of the coating solution containing the anchor coating agent.
- the inorganic substance constituting the inorganic thin film (B) formed on the plastic substrate (A) includes silicon, anolemminium, magnesium, zinc, tin, nickel, titanium and carbon, and oxides thereof.
- Illustrative are carbides, nitrides and mixtures thereof, preferably oxidized.
- silicon oxide is particularly preferable because the effect of the heat treatment in the present invention is remarkable, transparency is good, and high gas barrier properties can be stably maintained.
- a method for forming the inorganic thin film (B) is not particularly limited, and a vapor deposition method, a coating method, and the like can be employed. However, the vapor deposition method is preferable because a uniform thin film having high gas barrier properties can be obtained.
- a physical vapor deposition method such as vacuum vapor deposition, ion plating, and sputtering, and a chemical vapor deposition method such as CVD can be employed.
- the thickness of the inorganic thin film (B) is usually 0.1 to 500 nm, preferably 0.540 nm. If the thickness of the inorganic thin film (B) is less than 0.1 nm, it is difficult to obtain a sufficient gas barrier property. If the thickness exceeds 500 nm, the inorganic thin film (B) may be cracked or peeled off, or the transparency may be deteriorated.
- the gas barrier laminate according to the first aspect includes the plastic substrate (A), the inorganic thin film (B), and a coating layer formed by applying a coating agent on the surface of the inorganic thin film (B).
- (C) is a gas-barrier laminate comprising the above coating agent, a polyester-based resin having a molecular weight of 3000-15000)! Meaning (cl) and a polyurethane resin (c2) having a molecular weight of 8000-30000 The content is 5 / 95-95 / 5, and the oxygen permeability of the gas barrier laminate is 25 fmol / m 2 / s / Pa or less.
- the coating layer (C) provided on the surface of the inorganic thin film (B) contains the polyester resin (cl) and the polyurethane resin (c2) in a weight ratio of 5 / 95-95 / 5. It is formed by applying a coating agent.
- Polyhydric carboxylic acid components constituting the polyester resin (cl) include terephthalic acid, isophthalic acid, adipic acid, sebacic acid, azelaic acid, orthophthalic acid, diphenyldicarboxylic acid, and dimethylphthalic acid.
- Ingredients include ethylene glycol monohydrate, 1,2_propylene glycolone, 1,3_propylene glycolone, 1,4_butanediole, jetielen glycolone, neopentinole glycoloneole, dipropylene glycoloneole, 1 , 6
- the molecular weight of the polyester resin (cl) is 3000 15000, preferably 4000 13000, and more preferably 5000-12000.
- the molecular weight of the polyester resin is less than S3000, the performance of the protective layer cannot be obtained because the coating film becomes brittle.
- the molecular weight When it exceeds 15,000, even if crosslinking is carried out using polyisocyanate or the like, the crosslinking point is small and the crosslinking density does not increase, so that it dissolves or swells in the printing ink and the printing appearance deteriorates.
- the glass transition temperature (Tg) of the polyester resin (cl) is usually 55 100 ° C, preferably 60-95 ° C, more preferably 65-90 ° C.
- Tg glass transition temperature
- the coating layer (C) shrinks due to poor thermal stability, lowering gas barrier properties and blocking during storage. This causes a reduction in gas barrier properties and roughening of the coated surface.
- the temperature exceeds 100 ° C, the adhesion between the coating layer (C) and the inorganic thin film (B) decreases.
- the acid value of the polyester resin (cl) is usually 100 mgK 100H / g, preferably 380 mgKOH / g, and more preferably 560 mgKOH / g.
- the acid value is less than 1 mgKOHZg, the crosslinking point is small and the crosslinking density is not increased, so that the resin is dissolved or swelled in the printing ink and the gas barrier property is reduced.
- the acid value exceeds 100 mgKOH / g, there are too many bridge points and the crosslinking density becomes too high, and the coating layer (C) becomes hard and has no elongation, and the curing stress of the coating layer (C) increases. . Therefore, the gas barrier property is reduced, and the adhesion between the coating layer (C) and the inorganic thin film (B) is reduced.
- the above polyhydric carboxylic acid component and polyhydric alcohol component are reacted in a state where the amount of COOH groups is excessive with respect to the amount of OH groups, whereby the above molecular weight and glass transition temperature are obtained.
- a polyester having an acid value For example, by mixing and reacting phthalic acid, terephthalic acid, ethylene glycol, and neopentyl glycol, a polyester having a weight average molecular weight of 8000, an acid value of 16 mgKOH / g, and a glass transition temperature of 62 ° C can be obtained.
- polyurethane resin (c2) a urethane polymer obtained by reacting an isocyanate conjugate with a polymer polyol compound, or a urethane polymer obtained by reacting a urethane prepolymer with a chain extender and a reaction terminator And may have an isocyanate group at the terminal.
- isocyanate conjugate known aromatic isocyanates and alicyclic isocyanates can be used.
- isophorone diisocyanate 1,4-cyclohexanediisocyanate, 4, 4, and Dicyclohexylmethanedi
- Alicyclic diisocyanates such as isocyanate, hydrogenated xylylene diisocyanate, 1,3-bis (isosinate methyl) cyclohexane, hydrogenated diphenylmethane diisocyanate, norbornane diisocyanate; Preferred are isocyanate ligations, and mixtures thereof.
- polymer polyol conjugate to be reacted with the above isocyanate conjugate examples include known polymer polyols such as polyester polyols and polyether polyols, and mixtures thereof.
- the polyester polyol is obtained by a dehydration or condensation reaction between a dicarboxylic acid and a diol.
- diesters examples include adipic acid, suberic acid, sebacic acid, isophthalic acid, terephthalic acid, succinic acid, azelaic acid, and diesters of these dimethyl esters, and diols such as ethylene glycol and diethylene glycol Examples thereof include 1,3-propylene glycolone, 1,4-butanediole, 1,5-pentanediol, 1,6-hexanediol, and 3-methylolane 1,5-pentanediol. Dicarboxylic acids and diols may be used alone or in combination of two or more.
- the molecular weight of the positive urethane resin (c2) is from 8000 to 30000, preferably ⁇ 10000 to 28000, more preferably 12000 to 26000.
- the molecular weight of the positive urethane-based seal (c2) is 8000 or less, the performance of the protective layer cannot be obtained because the coating film becomes brittle.
- the molecular weight is more than 30,000, even if crosslinking is carried out using polyisocyanate or the like, the crosslinking point is small and the crosslinking density does not increase, so that the resin dissolves or swells in the printing ink and the printing appearance deteriorates.
- the glass transition temperature (Tg) of the polyurethane resin (c2) is usually 55 ° C or higher, preferably 55 to 100 ° C, more preferably 60 to 95 ° C.
- Tg glass transition temperature
- the coating layer (C) shrinks due to poor thermal stability, lowering gas barrier properties and blocking during storage. This causes a reduction in gas barrier properties and roughening of the coated surface.
- the temperature exceeds 100 ° C, the adhesion between the coating layer (C) and the inorganic thin film (B) decreases.
- the polyurethane resin (c2) has an acid value of usually 100 mgKOH / g, preferably 380 mgKOH / g, more preferably 560 mgK ⁇ H / g.
- the acid value is less than lmgKOHZg, the crosslinking point is small and the crosslinking density does not increase, so In addition, gas barrier properties decrease.
- the acid value exceeds 100 mgKOH / g, the number of crosslinking points is so large that the crosslinking density becomes too high, the coating layer (C) becomes hard and has no elongation, and the curing stress of the coating layer (C) increases. As a result, the gas barrier properties decrease, and the adhesion between the coating layer (C) and the inorganic thin film (B) decreases.
- the mixing ratio (weight ratio) of the polyester resin (cl) and the polyurethane resin (c2) in the coating agent is 5/95 95/5, preferably 10 / 90-90 / 10, More preferably, it is 15/85 85/15. If the mixing ratio of the polyester resin (cl) is greater than 95% by weight, the adhesion between the coating layer (C) and the inorganic thin film (B) decreases, and the mixing ratio of the polyurethane resin (c2) becomes 95% by weight. If the ratio is larger than the above, the gas barrier property is reduced.
- the coating layer (C) preferably contains a silane coupling agent in order to improve the adhesion to the inorganic thin film (B). Is usually 0.1 to 20% by weight, preferably 0.1 to 3% by weight, based on the weight of the composition.
- a silane coupling agent an epoxy group-containing silane coupling agent and an amino group-containing silane coupling agent are preferred.
- Epoxy group-containing silane coupling agents include ⁇ - (3,4-epoxycyclohexyl) ethyltrimethoxysilane, ⁇ -glycidoxypropylmethyljetoxysilane, and ⁇ -glycidoxypropyltrimethoxysilane.
- a group-containing silane coupling agent is exemplified.
- Amino group-containing silane coupling agents include ⁇ -aminopropyltrimethoxysilane, ⁇ - ⁇ (aminoethyl) ⁇ -aminopropylmethyljetoxylan, ⁇ _ / 3 (aminoethyl) ⁇ -aminopropyltrimethoxysilane , N_i3 (aminoethyl) ⁇ -aminopropyltriethoxysilane. These silane coupling agents may be used alone or in combination of two or more.
- a particularly preferred silane coupling agent is ⁇ _glycidoxypropyltrimethoxysilane
- Coating agents for forming the coating layer (C) include liquid paraffin, microcrystalline wax, natural paraffin, synthetic paraffin, polyethylene and the like for the purpose of improving the coating properties of the printing ink and gas barrier properties.
- Aliphatic hydrocarbon compounds such as stearic acid, lauric acid, hydroxystearic acid, and hydrogenated castor oil; stearic acid amide, oleic acid amide, erlic acid amide, lauric acid amide, palmitic acid amide; Behenic acid amide, ricinolenic acid amide, oxcystearic acid amide, methylenebisstearic acid amide, ethyl Fatty acid amide compounds such as lenbisstearic acid amide, ethylenebisoleic acid amide, ethylenebisbenenic acid amide, and ethylenebislauric acid amide; C12-carbon compounds such as sodium stearate, calcium stearate, and calcium hydroxystearate 30 fatty acid metal
- the compounding amount of the compound to be added to the coating agent is usually 0.05 to 20 parts by weight, preferably 0.1 to 10 parts by weight, based on 100 parts by weight of the total of the polyester resin (cl) and the polyurethane resin (c2). Parts by weight. If the addition amount is less than 0.05 parts by weight, the effect of improving the gas barrier property is small, and the print appearance may be deteriorated. May be reduced in adhesion.
- the coating agent containing the polyester resin (cl) and the polyurethane resin (c2) is prepared by dissolving the polyester resin and the polyurethane resin in an organic solvent.
- the total concentration of the polyester resin (cl) and the polyurethane resin (c2) in the coating agent is usually 20 to 50% by weight.
- the organic solvent is not particularly limited as long as it can dissolve the polyester resin (cl) and the polyurethane resin (c2).
- Esters such as ethyl acetate and butyl acetate, methyl ethyl ketone, Examples thereof include ketones such as methyl isobutyl ketone, and aromatic hydrocarbons such as toluene and xylene. These may be used in combination of two or more. Among them, a mixed solvent of toluene and methyl ethyl ketone is preferable.
- polyisocyanate as a curing agent.
- any of conventionally known polyisocyanates that are known as a crosslinking agent can be used, and is not particularly limited.
- An active isocyanate group is contained in one molecule. There are 3 or more, and the amount of isocyanate groups is 12% by weight or more (solid content conversion)
- the polyisocyanate is preferably used.
- aromatic polyisocyanate such as socyanate is exemplified, and a commercially available product is “Coronate L” manufactured by Japan Polyurethane.
- the amount of the polyisocyanate used is preferably 0.8 to 1.5 times the total of the hydroxyl equivalents of the polyester resin (cl) and the polyurethane resin (c2).
- the coating layer lacks the isocyanate group and has a sufficient crosslinking density. If (C) cannot be obtained and the solvent resistance of the printing ink to the solvent becomes insufficient, and if it exceeds 1.5 times, the isocyanate group becomes excessive and the formed coating layer (C) becomes hard and flexible. Sex is impaired.
- the coating layer (C) includes an antistatic agent, a light-blocking agent, an ultraviolet absorber, a plasticizer, a filler, a coloring agent, a stabilizer, an antifoaming agent, a crosslinking agent, an anti-blocking agent, and an antioxidant.
- a known additive such as calorie can be added.
- the thickness of the coating layer (C) is usually 0.05-5 / im, preferably 0.1-2 / im. If the thickness of the coating layer (C) is less than 0 ⁇ 05 / m, can not be prevent damage of the inorganic thin film (B) by printing, if it exceeds 5 beta m, the transfer of printing ink deteriorates I do.
- the first gas barrier oxygen permeability of the laminate of the gist of the present invention 25fmol / m 2 / s / P a or less, preferably not more than 15fmol / m 2 / s / Pa , the lower limit is usually 0 It is more than 05fmol / mV s / Pa.
- the gas barrier laminate of the present invention has a moisture permeability of 5 g / m 2 / day or less, preferably 3 gZm 2 Zday or less, and the lower limit is usually 0.01 g / m 2 Zday or more.
- the gas barrier laminate according to the twenty-fourth aspect includes a coating formed by applying a coating agent to the surface of the plastic substrate (A), the inorganic thin film (B), and the inorganic thin film (B). It is a gas barrier laminate comprising a working layer (C).
- the hardness of the coating layer (C) measured by the nanoindentation method in the atmosphere at 23 ° C is 0.1 to 0.5 GPa, preferably 0.2 to 0.4 GPa.
- Third summary Is characterized in that the hardness of the coating layer (C) measured by the nano-indentation method in water at 23 ° C is 0.003 to 0.5 GPa, preferably 0.1 to 0.4.
- the number of carbon atoms derived from the carboxyl group with respect to the number of carbon atoms constituting the surface of the coating layer (C) is expressed by SO. 005-0.1, preferably 0.008 0.05. It is a special floor. It is more preferable to have two or more of the features of the twenty-fourth aspect. The following is a description of the second to fourth points.
- the nano indentation method is a method of adding indentation hardness measurement module (composed of a transducer and an indenter) to an AFM (atomic force microscope). This is a method of performing indentation hardness measurement. The measurement is performed by applying a load controlled by the transducer to the indenter and detecting the indentation depth of the sample at that time. Details of the measuring method will be described in Examples. The ratio of the number of carbons derived from the carboxy group to the number of carbons constituting the surface of the coating layer (C) is described in J. Olym. Sci., Part A, Vol. 26, p. (1988) and Japanese Patent No. 3139522. Details of the measuring method will be described in Examples.
- the coating layer (C) measured by the nanoindentation method in the atmosphere at 23 ° C is too large, the coating layer (C) follows the dimensional change of the entire laminate during hot water treatment. No, the nobility after hot water treatment tends to be poor, and if the hardness is too low, the print gradation is likely to decrease.
- the coating layer (C) If the hardness of the coating layer (C) measured by the nanoindentation method in water at 23 ° C is too large, the coating layer (C) follows the dimensional change of the entire laminate during hot water treatment. No, the barrier properties after hot water treatment tend to be poor, and if the hardness is too low, the adhesion during hot water treatment tends to decrease.
- the coating layer (C) at the above-mentioned temperature of 23 ° C may be used. If the hardness of the coating layer (C) measured in water by the nanoindentation method is within the above range, the effect of the present invention can be achieved by moisture absorption during retort.
- Examples of the resin forming the coating layer (C) include a polyester resin, a polyurethane resin, an acryl resin, an alkoxysilyl group-containing resin, an oxazoline resin, an epoxy resin, and a melamine resin. And a crosslinking agent component.
- a polyester resin a polyurethane resin
- an acrylic resin an alkoxysilyl group-containing resin
- an oxazoline group-containing resin an epoxy resin
- a melamine resin a crosslinking agent component.
- at least one resin selected from the group consisting of a polyester resin, a urethane resin, an acrylic resin, an alkoxysilyl group-containing resin, an oxazoline group-containing resin, and a copolymer resin thereof may be formed. preferable.
- a block and / or graft copolymer may be used, or two or more different types of resins or the same resin may be used. It is preferable to use a mixture of two or more resins having different molecular weights or molecular weight distributions.
- the polyester-based resin in the first aspect of the present invention can be used, and the polyvalent carboxylic acid component, the molecular weight, and the glass transition temperature of the polyester-based resin ( Tg), acid value and production method are as described in the first summary.
- the number of carboxyl groups relative to the number of carbon atoms constituting the surface of the coating layer (C) is increased.
- the ratio of the number of carbons derived from the carbon dioxide can be adjusted to 0.005 or more.
- Resins having a large amount of carboxylic acid at the terminal and / or side chain include, for example, JP-A-54-46294, JP-A-60-209073, JP-A-62-240318, and JP-A- JP-A-53-26828, JP-A-53-26829, JP-A-53-98336, JP-A-56-116718, JP-A-61-124684, etc. It can be produced by copolymerizing a polyvalent carboxylic acid.
- polycarboxylic acids include trimellitic acid, trimellitic anhydride, pyromellitic acid, anhydrous pyromellitic acid, 4-methylcyclohexene-1,2,3_tricarboxylic acid, trimesic acid, 2,3,4_butanetranorebonic acid, 1,2,3,4_pentanetranolevonic acid, 3,3 ', 4,4, _benzophenonetetracarboxylic acid, 5_ (2,5 —Dioxotetrahydrofurfuryl) -1,3-methyl-1,3-cyclohexene 1,2-dicarboxylic acid, 5- (2,5-dioxotetrahydrofunolef) Ryl) —3-cyclohexene-1,2-dicarboxylic acid, cyclopentanetetracarboxylic acid, 2,3,6,7_naphthalenetetracarboxylic acid, 1,2,5,6_na
- the polyurethane-based resin includes the polyurethane-based resin according to the first aspect of the present invention.
- (c2) can be used, and the isocyanate conjugate, the polymer polyol conjugate, the molecular weight, the glass transition temperature (Tg), the acid value and the production method are as described in the first summary. is there.
- polyester urethanes described in JP-A No. 61-228030 and the like can also be used.
- examples thereof include pendant carboxyl groups such as 2,2-dimethylolpropionic acid and 2,2-dimethylolbutyric acid, and the method of introducing them is described in Japanese Patent Publication No. 52-3438.
- acrylic resin a monomer having an anionic carboxy group as a hydrophilic group, as described in “Aqueous paint and coating technology” (edited by Technical Information Association) is used. It can be obtained by: Specifically, it can be obtained by copolymerization of acrylic acid and methyl methacrylate.
- the alkoxysilyl group-containing resin can be obtained by hydrolysis of alkoxysilane as described in JP-A-2000-63661, JP-A-2000-160067 and the like. Specifically, it is obtained by modifying polyurethane in advance with an alkoxysilane, and further curing the polyurethane by a sol-gel method with a hydrolyzable alkoxysilane.
- Examples of the oxazoline-based resin include "Epocross” manufactured by Nippon Shokubai Co., Ltd. K-1000, K-2000, WS-500, WS-700, and the like.
- Examples of the epoxy resin include an epoxy polyamide resin, a silicon-modified epoxy resin, an epoxy resin ester, an epoxy phenol resin, and an epoxy alkyd resin.
- Examples of the melamine-based resin include an etherified melamine resin and an alkylated melamine resin.
- crosslinking agent component a conventionally known crosslinking agent can be used, and it is particularly preferable to use polyisocyanate.
- polyisocyanate those described in the first gist can be used, and the specific examples and the amounts used are as described in the first gist.
- the silane coupling agent described in the first aspect is preferably added to the coating layer (C) in order to improve the adhesion to the inorganic thin film (B).
- the amount of the silane coupling agent used and specific examples of the silane coupling agent are as described in the first gist.
- one or more of the additives described in the first aspect may be added to the coating agent for forming the coating layer (C). Good.
- the type and amount of the preferred resin additive are as described in the first gist.
- the known additives described in the first aspect can be added to the coating layer (C).
- the thickness of the coating layer (C) is as described in the first gist.
- the gas barrier laminate of the fourteenth aspect of the present invention can form a printing layer on the coating layer (C), and can further laminate another plastic substrate / paper substrate.
- Aqueous and solvent-based resin-containing printing inks can be used as the printing ink for forming the printing layer.
- the resin used for the printing ink include an acrylic resin, a urethane resin, a polyester resin, a vinyl chloride resin, a vinyl acetate copolymer resin, and a mixture thereof.
- antistatic agents include antistatic agents, light blocking agents, ultraviolet absorbers, plasticizers, lubricants, fillers, coloring agents, stabilizers, lubricants, defoamers, crosslinking agents, anti-blocking agents, antioxidants, etc. And other known additives.
- the printing method for providing the printing layer is not particularly limited, and a known printing method such as an offset printing method, a dallavia printing method, and a screen printing method can be used.
- Known drying methods such as hot-air drying, hot-roll drying, and infrared drying can be used for drying the solvent after printing.
- heat-sealable resin for another plastic base material to be laminated on the print layer, heat-sealing becomes possible, and it is used as a container for various kinds of containers, particularly a container for retorts.
- a container for various kinds of containers particularly a container for retorts.
- gas barrier By using another heat-sealable plastic substrate as the inner layer of the container (for the retort), it is possible to obtain a container (for the retort) having excellent gas barrier properties.
- the plastic film a film made of plastic constituting the plastic substrate (A) can be used.
- plastic polyester resin, polyamide resin and biodegradable resin are preferable from the viewpoint of obtaining sufficient rigidity and strength of the laminate.
- the stretched polyamide resin layer preferably has a hot water shrinkage of 127 ° C. of 15% or less. If the hot water shrinkage exceeds 15%, the barrier properties and adhesion may decrease due to the dimensional change stress in the hot water treatment.
- Examples of the resin that can be heat-sealed include polyethylene resin, polypropylene resin, ethylene'biel acetate copolymer resin, ionomer resin, EAA resin, EMAA resin, EMA resin, EMMA resin, EEA resin, and biodegradable resin.
- Examples of such resins include known resins.
- a dry lamination method using an adhesive or an extrusion lamination method using an adhesive resin can be adopted.
- the oxygen permeability of the gas barrier film obtained by laminating the printing layer and the heat sealing layer on the gas barrier laminate of the present invention is usually 25 fmol / m 2 / s / Pa or less, preferably 10 fmol / m 2 / sZPa or less.
- the lower limit is usually at least 0.025 fmol / m 2 / sZPa.
- the oxygen permeability of the gas barrier laminate of the present invention (the composition of the plastic substrate (A) / inorganic thin film (B) / coating layer (C)) was 25 fmol / m 2 / sZPa or less as described above. Yes, these gas barrier laminates and gas barrier films are in the category of high gas barrier films.
- the gas-barrier laminate and the gas-barrier film of the present invention have a feature that the gas-barrier property is hardly reduced even when the hot-water pressurization treatment is performed under a condition called so-called retort treatment.
- retort treatment a condition that the hot-water pressurization treatment is performed under a condition called so-called retort treatment.
- a gas barrier film can be obtained by performing a heat treatment or laminating another plastic film and / or paper and performing a heat treatment.
- the obtained gas barrier film is subjected to hot water treatment at 120 ° C.
- the oxygen permeability power S of the gas barrier laminate is 50 fmol / m 2 / s / Pa or less, preferably 25 fmol / m 2 / s / Pa or less, more preferably 10 fmol / m 2 / s ZPa or less, particularly preferably 5 fmolZm 2 Zs / Pa or less.
- the heat treatment is usually performed in a state of a gas barrier film or a state of a gas barrier laminate.
- the gas barrier film is subjected to secondary heat treatment in bags, containers, etc., and heat treatment is performed, and the heat treatment is performed after putting the contents into the secondary processed product Any of the above methods can be adopted.
- the conditions for the heat treatment vary depending on the type and thickness of the elements constituting the gas gallium film and the gas barrier laminate,
- the method is not particularly limited as long as the method can maintain the required temperature for the required time.
- storage in an oven or constant temperature room set to the required temperature blowing hot air, heating with an infrared heater, irradiating with a lamp, direct contact with a hot roll or hot plate
- the method include a method of thermally applying heat and a method of irradiating microwaves.
- the film may be cut into a size that is easy to handle and heat-treated, or heat-treated with the film roll.
- a heating device may be incorporated in a part of the film manufacturing apparatus such as a coater or a slitter, and a heat treatment may be performed in the manufacturing process.
- the treatment temperature of the above heat treatment is not particularly limited as long as it is usually 60 ° C or higher and not higher than the melting points of the plastic base material (A) and the plastic film used, and the lower limit is preferably 70 ° C. ° C, the upper limit is usually 200 ° C, preferably 160 ° C. If the processing temperature is lower than 60 ° C, the processing time required for achieving the effect of the heat treatment becomes extremely long, which is impractical. The time of the heat treatment tends to be shorter as the treatment temperature is higher. If the treatment temperature is high, the gas gallium film or the constituents of the gas barrier laminate may be thermally decomposed to lower the gas barrier property. Therefore, it is preferable to shorten the treatment time.
- the processing time is about 3 days to 6 months, and when the processing temperature is 80 ° C, the processing time is about 3 hours to 10 days, and the processing temperature is 120 ° C. If the processing time is about 1 hour to 1 day, and if the processing temperature is 150 ° C, the processing time is about 3 to 60 minutes, these are only guidelines and constitute a gas gallium film or gas barrier laminate. It depends on the type and thickness of the element to be used.
- the adhesive strength between the plastic base material (A) and the inorganic thin film (B) after pressurized hot water treatment for 30 minutes is usually 100 g / l 5 mm or more, preferably 200 gZl 5 mm or more, regardless of the presence or absence of the heat treatment. It is.
- the same adhesion strength as described above can be achieved by providing an anchor coat layer.
- Is usually 100 g / 15 mm or more, preferably 200 g / 15 mm or more. Further, the shrinkage ratio of the gas barrier laminate and the gas barrier film of the present invention before and after the pressurized hot water treatment is usually 3% or less, preferably 2% or less.
- Examples 1-121 and Reference Examples 11-11 relate to the first gist of the present invention
- Examples 22-34 and Reference Examples 12-11 relate to the 2nd gist of the present invention. Things.
- the measuring method used in the present invention is as follows.
- the measurement was carried out using an oxygen permeability measuring device ("X-TRAN100" manufactured by Modern Control) under the conditions of a temperature of 25 ° C and a relative humidity of 80%.
- the evaluation criteria are shown below.
- Plastic base material / Surface modification layer / Inorganic thin film Z coating layer Z printing layer Z adhesive layer Z It is a strip film with a width of 15 mm and a length of 100 mm consisting of a laminate of other plastic films. At the time of preparation (lamination), a spacer made of release paper is interposed in a half part of the length direction (that is, a part with a width of 15 mm and a length of 50 mm) to remove the area where the adhesive layer does not exist. The formed strip film was used as a sample film. T-peeling from the non-existing area side of the adhesive layer to the plastic substrate / surface modified layer / inorganic thin film / coating layer / printing layer side (A side) and other plastic film side) The test was performed.
- a printing pattern consisting of five colors of black, indigo, red, yellow, and white at a printing speed of 100 mZ min. (Dots) were formed in the coating layer, and the gradation printability was evaluated by observing the density reproducibility of the dots of the printed pattern.
- a printing pattern on a polyethylene terephthalate (PET) film was used as an evaluation standard. The evaluation criteria are shown below.
- ⁇ The spread of halftone dots is small, and the apparent decrease in density is large.
- Indentation depth Depth at which the effect of the base film does not appear
- Measurement position Atomic force microscope observation, no inorganic fillers, etc., and flat place Measurement atmosphere:
- Photoelectron escape angle 90 °
- the carboxyl group gas phase chemical modification was carried out in a desiccator under an air atmosphere, using pyridine and dicyclohexylcarbodiimide as catalysts, and performing esterification of the surface carboxyl group with trifluoroethanol to label.
- a polyacrylic acid film was used as a standard sample, and was subjected to gas phase chemical modification simultaneously with the gas barrier laminate.
- Standard sample power The reaction rate with trifluoroethanol and the residual rate of dicyclohexylcarbodiimide as a reaction catalyst were determined.] Polym. Sci., Part A, Vol. 26, p. 559-572 (1988) and Patent No. 31
- the ratio (COOH / C) of the number of carbons derived from the carboxy group to the number of carbons constituting the surface of the coating layer was calculated by the calculation method described in the specification of 39522.
- a mixed monomer comprising 40 parts by weight of ethyl acrylate, 30 parts by weight of methyl methacrylate, 20 parts by weight of methacrylic acid and 10 parts by weight of glycidyl methacrylate was solution-polymerized in ethanol. After the polymerization, the mixture was heated while adding water to remove ethanol. The pH was adjusted to 7.5 with aqueous ammonia to obtain an aqueous acrylic resin paint.
- resin B aqueous polyurethane resin
- a polyester polyol was obtained from 664 parts by weight of terephthalic acid, 631 parts by weight of isophthalic acid, 472 parts by weight of 1,4-butanediol and 447 parts by weight of neopentyl dalicol. 321 parts by weight of adipic acid and 268 parts by weight of dimethylolpropionic acid were added to the obtained polyester polyol to obtain a pendant carboxyl group-containing polyester polyol A. 160 parts by weight of hexamethylene disocyanate was added to 1880 parts by weight of the obtained polyester polyol A, and a water-based polyurethane resin-based water-based paint was obtained.
- coating resin C alkoxysilyl group-containing resin
- PET Polyethylene terephthalate
- silicon oxide was deposited on the anchor coat layer by a high-frequency heating method to form an inorganic thin film layer of silicon oxide having a thickness of about 10 nm, and a silicon oxide-deposited PET film was obtained.
- the deposition material was changed to aluminum, oxygen was introduced to form an inorganic thin film layer of aluminum oxide having a thickness of about lOnm, and an aluminum oxide-deposited PET film was obtained.
- the obtained silicon oxide-deposited PET film had an oxygen permeability of l lfmol / m 2 / sZPa, and the aluminum oxide-deposited PET film had an oxygen permeability of 9 fmol / m 2 / s / Pa.
- silicon oxide was deposited on the anchor coat layer by a high-frequency heating method using a vacuum deposition apparatus to form an inorganic thin film layer of silicon oxide having a thickness of about 10 nm. Obtained.
- the oxygen permeability of this vapor-deposited nylon film was 25 fmol / m 2 / s / Pa.
- the coating agent is 10 parts by weight of a polyester resin having a glass transition point of 57 ° C, a molecular weight of 3000, and an acid value of 42 mgKOH / g, and 10 parts by weight of a polyurethane resin having a glass transition point of 75 ° C, a molecular weight of 8,000, and an acid value of 20 mgKOH / g.
- a gravure printing ink was used as a printing ink on the coating layer of the above-deposited PET film to form a printing pattern composed of five colors of black, indigo, red, yellow, and white. Was evaluated.
- a urethane-based adhesive (a mixture of "AD-900” and “CAT-RT85” manufactured by Toyo Morton Co., Ltd. in a ratio of 10: 1.5) was applied on the printed layer of the above-mentioned evaporated PET film. And dried to form an adhesive resin layer having a thickness of 4 xm.
- unstretched polypropylene (PP) finolem (Toray Synthetic Film Co., Ltd. “Trefane NO ZK-93K”) with a thickness of 50 xm is laminated, and PET film ⁇ inorganic thin film layer ⁇ coating
- PET film ⁇ inorganic thin film layer ⁇ coating A transparent laminated film having a layer structure of a layer, a printing layer, an adhesive resin layer, and a film was obtained.
- the obtained laminated film was aged at 40 ° C. for 3 days to obtain a film for evaluation, and the oxygen permeability and the adhesion strength were evaluated. Further, the film for evaluation was subjected to a hot water treatment in an autoclave at 120 ° C. for 30 minutes, and the oxygen permeability and the adhesion strength after the hot water treatment were measured. Table 5 shows the evaluation results.
- a film for evaluation was prepared in the same manner as in Example 1, except that the transparent laminated film was subjected to a heat treatment at 150 ° C for 30 minutes in an oven instead of the aging treatment.
- the obtained evaluation film was subjected to the same hot water treatment as in Example 1, and the oxygen permeability and the adhesion strength before and after the hot water treatment were measured. Table 5 shows the evaluation results.
- a film for evaluation was prepared in the same manner as in Example 1, except that the properties of the resin constituting the coating agent, the amount of the resin, and the additives were changed as shown in Tables 1 and 2. Created. In Example 10, a silane coupling agent, a fatty acid amide-based compound, and a polyisocyanate were not used. The obtained film for evaluation was subjected to the same hot water treatment as in Example 1, and the oxygen permeability and adhesion strength before and after the hot water treatment were measured. Table 5 shows the evaluation results.
- Example 16 After a coating agent was applied on the silicon oxide thin film of the silicon oxide-deposited nylon film, it was dried at 100 ° C. for 60 seconds to form a coating layer of 0.5 ⁇ .
- the coating agent is a polyurethane resin with a glass transition point of 60 ° C, a molecular weight of 8000, an acid value of 23 mgKOH / g, 10 parts by weight of a polyester resin, a glass transition point of 82 ° C, a molecular weight of 15,000, and an acid value of 18 mgK ⁇ H / g.
- a gravure printing ink was used as a printing ink on the coating layer of the above-mentioned vapor-deposited nylon film to form a printing pattern composed of five colors of black, indigo, red, yellow, and white. was evaluated.
- a urethane-based adhesive (a mixture of "AD_900” and “CAT-RT85” manufactured by Toyo Morton Co., Ltd. in a ratio of 10: 1.5) was applied on the printing layer of the vapor-deposited nylon film. And dried to form an adhesive resin layer having a thickness of 4 / m.
- Non-expanded polypropylene (pp) finolem (Toray Synthetic Film Co., Ltd. “Trefane NO ZK-93K”) with a thickness of 50 ⁇ is laminated on this adhesive resin layer, and the nylon film / inorganic thin film layer / coating layer A transparent laminated film having a layer configuration of / printing layer / adhesive resin layer / film was obtained.
- the obtained laminated film was aged at 40 ° C for 3 days to obtain a film for evaluation, and the oxygen permeability and the adhesion strength were evaluated. Further, the evaluation film was subjected to a hot water treatment in an autoclave at 120 ° C. for 30 minutes, and the oxygen permeability and the adhesion strength after the hot water treatment were measured. Table 5 shows the evaluation results.
- a film for evaluation was prepared in the same manner as in Example 16, except that the properties of the resin constituting the coating agent, the amount of the resin, and the additives were changed as shown in Tables 1 and 2. Created.
- the obtained evaluation film was subjected to the same hot water treatment as in Example 16, and the oxygen permeability and adhesion strength before and after the hot water treatment were measured. Table 5 shows the evaluation results.
- Example 18 After coating a coating agent on the silicon oxide thin film of the silicon oxide vapor-deposited PET film, the coating was dried at 100 ° C. for 60 seconds to form a coating layer of 0.5 ⁇ .
- the coating agent is a polyurethane resin with a glass transition point of 60 ° C, a molecular weight of 8000, an acid value of 23 mgKOH / g, 10 parts by weight of a polyester resin, a glass transition point of 82 ° C, a molecular weight of 15,000, and an acid value of 18 mgK ⁇ H / g.
- a gravure printing ink was used as a printing ink on the coating layer of the above-deposited PET film to form a printing pattern composed of five colors of black, indigo, red, yellow, and white, and the transferability of the printing pattern was evaluated. Was evaluated.
- a urethane-based adhesive (a mixture of "AD-900” and “CAT-RT85” manufactured by Toyo Morton Co., Ltd. in a ratio of 10: 1.5) was applied on the above-mentioned printed layer of the deposited PET film. And dried to form an adhesive resin layer having a thickness of 4 ⁇ .
- a biaxially stretched nylon film having a thickness of 15 ⁇ (“Santonier SNR” manufactured by Mitsubishi Plastics, Inc.) was laminated.
- a urethane-based adhesive (“AD-900” and “CAT-RT85” manufactured by Toyo Morton Co., Ltd. mixed in a ratio of 10: 1.5) is applied to the biaxially stretched nylon film and dried.
- An adhesive resin layer having a thickness of 4 / m was formed.
- an unstretched polypropylene (PP) film (Toray Synthetic Film Co., Ltd. “Trefane NO ZK-93K:”) with a thickness of 50 ⁇ is laminated, and PET film / inorganic thin film layer / coating
- a transparent laminated film having a layer structure of layer / printing layer / adhesive resin layer / nylon film / adhesive resin layer / PP film was obtained.
- the obtained laminated film was aged at 40 ° C for 3 days to obtain a film for evaluation, and the oxygen permeability and the adhesion strength were evaluated. Further, the evaluation film was subjected to a hot water treatment in an autoclave at 120 ° C. for 30 minutes, and the oxygen permeability and the adhesion strength after the hot water treatment were measured. Table 5 shows the evaluation results.
- Example 18 the properties, blending amounts, and additives of the resin constituting the coating agent are shown in Tables 1 and 2.
- a film for evaluation was prepared in the same manner as in Example 18, except that the film was changed as shown in 2.
- the obtained film for evaluation was subjected to the same hot water treatment as in Example 18, and the oxygen permeability and adhesion strength before and after the hot water treatment were measured. Table 5 shows the evaluation results.
- Example 6 an evaluation film was prepared by performing the same operation as in Example 6, except that an aluminum oxide-deposited PET film was used instead of the silicon oxide-deposited PET film.
- the obtained film for evaluation was subjected to the same hot water treatment as in Example 6, and the oxygen permeability and adhesion strength before and after the hot water treatment were measured. Table 5 shows the evaluation results.
- a film for evaluation was prepared in the same manner as in Example 20, except that the properties of the resin constituting the coating agent, the amount of the resin, and the additives were changed as shown in Tables 1 and 2. Created.
- the obtained film for evaluation was subjected to the same hot water treatment as in Example 20, and the oxygen permeability and adhesion strength before and after the hot water treatment were measured. Table 5 shows the evaluation results.
- Example 6 An evaluation film was prepared in the same manner as in Example 1 except that the coating layer was not provided.
- the obtained film for evaluation was subjected to the same hot water treatment as in Example 1, and the oxygen permeability and adhesion strength before and after the hot water treatment were measured. Table 6 shows the evaluation results.
- a film for evaluation was prepared in the same manner as in Example 1, except that the properties of the resin constituting the coating agent, the compounding amount, and the additives were changed as shown in Tables 3 and 4. Created.
- the obtained film for evaluation was subjected to the same hot water treatment as in Example 1, and the oxygen permeability and adhesion strength before and after the hot water treatment were measured. Table 6 shows the evaluation results.
- a film for evaluation was prepared in the same manner as in Example 16, except that the properties of the resin constituting the coating agent, the compounding amount, and the additives were changed as shown in Tables 3 and 4. Created.
- the obtained evaluation film was subjected to the same hot water treatment as in Example 16, and the oxygen permeability and adhesion strength before and after the hot water treatment were measured. Table 6 shows the evaluation results. [0115] [Table 6]
- Silicon oxide vapor deposition A coating agent was applied on the silicon oxide thin film of the PET film, and then dried at 100 ° C for 60 seconds to form a coating layer of 0.5 / im.
- the coating agent is 10 parts by weight of a polyester resin having a glass transition temperature of 60 ° C, a molecular weight of 8000, and an acid value of 23 mgKOH / g, and 10 parts by weight of a polyurethane resin having a glass transition temperature of 75 ° C, a molecular weight of 8000, and an acid value of 20 mgKOH / g.
- ⁇ methylethyl ketone
- the resulting PET film had an oxygen permeability of 6 fmol / m 2 / s / Pa.
- a gravure printing ink was used as a printing ink on the coating layer of the above-mentioned vapor-deposited PET film to form a printing pattern of five colors of black, indigo, red, yellow, and white, and the transferability of the printing pattern was determined. Was evaluated.
- a urethane-based adhesive (a mixture of "AD-900” and “CAT-RT85” manufactured by Toyo Morton Co., Ltd. in a ratio of 10: 1.5) was applied on the above-mentioned printed layer of the deposited PET film. And dried to form an adhesive resin layer having a thickness of 4 xm.
- a 50 xm thick unstretched polish Layered with propylene (PP) finolem (Toray Synthetic Film Co., Ltd. “Trefane NO ZK-93K”) to form a PET film / inorganic thin film layer / coating layer / print layer / adhesive resin layer / ⁇ film layer structure
- PP propylene
- the obtained laminated film was aged at 40 ° C. for 3 days to obtain a film for evaluation, and the oxygen permeability and the adhesion strength were evaluated. Further, the film for evaluation was subjected to a hot water treatment in an autoclave at 120 ° C. for 30 minutes, and the oxygen permeability and the adhesion strength after the hot water treatment were measured. Table 7 shows the evaluation results.
- Example 22 The same operation as in Example 22 was performed except that the polyester resin used in the coating agent in Example 22 was changed to a polyester resin having a glass transition temperature of 65 ° C, a molecular weight of 15,000, and an acid value of 10 mgK ⁇ H / g. Then, an evaluation film was prepared. The obtained film for evaluation was subjected to the same hot water treatment as in Example 22, and the oxygen permeability and the adhesive strength before and after the hot water treatment were measured. Table 7 shows the evaluation results.
- Example 22 the polyester resin used in the coating agent was changed to a polyester resin having a glass transition temperature of 85 ° C, a molecular weight of 30,000, and an acid value of 15 mgK ⁇ H / g, and as a polyurethane resin used in the coating agent, A film for evaluation was prepared in the same manner as in Example 22, except that the polyurethane resin was changed to a polyurethane resin having a glass transition temperature of 57 ° C, a molecular weight of 3,000 and an acid value of 42 mgK OH / g.
- the obtained evaluation film was subjected to the same hot water treatment as in Example 22, and the oxygen permeability and adhesion strength before and after the hot water treatment were measured. The evaluation results are shown in Table 7.
- Example 22 the polyester resin used in the coating agent was changed to a polyester resin having a glass transition temperature of 85 ° C, a molecular weight of 30,000, and an acid value of 15 mgK ⁇ H / g, and as a polyurethane resin used in the coating agent, A film for evaluation was prepared in the same manner as in Example 22, except that the urethane resin was changed to a urethane resin having a glass transition temperature of 65 ° C, a molecular weight of 15,000, and an acid value of 10 mg KOHZg. The obtained evaluation film was subjected to the same hot water treatment as in Example 22, and the oxygen permeability and the adhesion strength before and after the hot water treatment were measured. The evaluation results are shown in Table 7.
- Example 26 the polyester resin used in the coating agent was changed to a polyester resin having a glass transition temperature of 85 ° C, a molecular weight of 30,000, and an acid value of 15 mgK ⁇ H / g, and as a polyurethane resin used in the coating agent,
- a film for evaluation was prepared in the same manner as in Example 22, except that the thickness of the coating layer was changed to 0.1 / m.
- the obtained film for evaluation was subjected to the same hot water treatment as in Example 22, and the oxygen permeability and the adhesion strength before and after the hot water treatment were measured.
- the evaluation results are shown in Table 8.
- a film for evaluation was prepared in the same manner as in Example 22, except that the thickness of the coating layer was changed to 3 zm.
- the obtained evaluation film was subjected to the same hot water treatment as in Example 22, and the oxygen permeability and the adhesion strength before and after the hot water treatment were measured.
- the evaluation results are shown in Table 8.
- a urethane-based adhesive (rAD-900j manufactured by Toyo Morton Co., Ltd. and “CAT-RT85”) was applied on the printed layer of the PET film obtained by the PET film Z inorganic thin film layer Z coated layer Z printed layer obtained in Example 22. 10: 1.5) and dried to form an adhesive resin layer with a thickness of 4 ⁇ .
- a biaxially stretched nylon film (“Santonier SNR” manufactured by Mitsubishi Plastics, Inc.) having a thickness of 15 ⁇ ⁇ was laminated.
- a polyurethane adhesive (“AD_900” manufactured by Toyo Morton Co., Ltd. and “CAT-RT85J mixed at a ratio of 10: 1.5”) is applied to the biaxially stretched nylon film, dried, and dried.
- An unstretched polypropylene (PP) film (Toray Synthetic Film Co., Ltd. “Trefan NO ZK-93K”) having a thickness of 50 ⁇ ⁇ was laminated on this adhesive resin layer.
- a transparent laminated film having a layer structure of PET film / inorganic thin film layer / coating layer / printing layer / adhesive resin layer / nylon film / adhesive resin layer / PP film was obtained.
- the obtained laminated film was aged at 40 ° C for 3 days to obtain an evaluation film, and the oxygen permeability and the adhesion strength were evaluated. Further, the finolem for evaluation was subjected to a hot water treatment in an autoclave at 120 ° C. for 30 minutes, and the oxygen transmittance and the adhesion strength after the hot water treatment were measured. Table 8 shows the evaluation results.
- a film for evaluation was prepared in the same manner as in Example 22, except that the silicon oxide-deposited PET film was heat-treated in an oven at 150 ° C for 30 minutes. Gain The obtained film for evaluation was subjected to the same hot water treatment as in Example 22, and the oxygen permeability and adhesion strength before and after the hot water treatment were measured. The evaluation results are shown in Table 8.
- a film for evaluation was prepared in the same manner as in Example 22, except that the PET film deposited with aluminum oxide was used instead of the PET film deposited with silicon oxide.
- the obtained evaluation film was subjected to the same hot water treatment as in Example 22, and the oxygen permeability and the adhesion strength before and after the hot water treatment were measured. The evaluation results are shown in Table 9.
- Example 22 The same operation as in Example 22 was carried out except that the plastic substrate was changed to a biaxially stretched nylon film having a thickness of 15 xm (“Santonier SNR”, manufactured by Mitsubishi Plastics, Inc., (ONY)). A film was made. The obtained evaluation film was subjected to the same hot water treatment as in Example 22, and the oxygen permeability and the adhesion strength before and after the hot water treatment were measured. The evaluation results are shown in Table 9.
- composition of the mixed resin that forms the anchor coat layer of the silicon oxide-deposited PET film Coating resin A (acrylic resin) 40% by weight, coating resin B (polyurethane resin) 40% by weight, oxazoline group-containing polymer (Nippon Shokubai Co., Ltd.) “Epocross WS-500”) was changed to 20% by weight, and a silicon oxide evaporated PET film was created.
- the same operation as in Example 22 was performed using this silicon oxide-deposited PET film to prepare a film for evaluation.
- the obtained evaluation film was subjected to the same hot water treatment as in Example 22, and the oxygen permeability and the adhesion strength before and after the hot water treatment were measured. The evaluation results are shown in Table 9.
- Example 22 The same operation as in Example 22 was performed using the silicon oxide-deposited PET film used in Example 32, to produce a film composed of PET film / inorganic thin film layer / coating layer / printing layer.
- a urethane-based adhesive a mixture of “AD-900” manufactured by Toyo Morton Co., Ltd. and “CAT-RT85” at a ratio of 10: 1.5
- An adhesive resin layer having a thickness of 4 ⁇ m was formed.
- a 15-m-thick biaxially stretched nylon finolem (“Santonir SNR” manufactured by Mitsubishi Plastics, Inc.) was laminated.
- biaxially stretched nylon finole A urethane-based adhesive (“AD-900” manufactured by Toyo Morton Co., Ltd. and “CAT-RT85J mixed at a ratio of 10: 1.5”) is applied to the coating and dried, and a 4 / m-thick adhesive resin is applied.
- an unstretched polypropylene (PP) film (Toray Synthetic Finolem Co., Ltd. “Trefane N ⁇ ZK-93K”) with a thickness of 50 ⁇ m was laminated, and PET film / inorganic A transparent laminated film having a layer structure of thin film layer / coating layer / printing layer / adhesive resin layer / nylon film Z adhesive resin layer ZPP film was obtained.
- the obtained laminated film was subjected to a heat treatment in an oven at 150 ° C for 30 minutes to obtain a film for evaluation, and the oxygen permeability and the adhesion strength were evaluated. Further, the evaluation film was subjected to a hot water treatment in an autoclave at 120 ° C. for 30 minutes, and the oxygen permeability and the adhesion strength after the hot water treatment were measured. Table 9 shows the evaluation results.
- Example 22 a hydrolyzed mixed coating comprising 100 parts by weight of coating resin C (aroxyxysilyl group-containing polyurethane resin) and 2 parts by weight of methoxysilane partial condensate (“MS51” manufactured by Mitsubishi Chemical Corporation) as a coating agent was used. The same operation as in Example 22 was carried out except that the surfactant was used, to prepare a film for evaluation. The obtained evaluation film was subjected to the same hot water treatment as in Example 22, and the oxygen permeability and the adhesion strength before and after the hot water treatment were measured. The evaluation results are shown in Table 10.
- a film for evaluation was prepared in the same manner as in Example 22, except that 20 parts by weight of flaky silica having an average particle diameter of 0.5 ⁇ was added to 100 parts by weight of the coating composition in Example 22. did.
- the obtained evaluation film was subjected to the same hot water treatment as in Example 22, and the oxygen permeability and the adhesion strength before and after the hot water treatment were measured. The evaluation results are shown in Table 10.
- a film for evaluation was prepared in the same manner as in Example 32, except that 50 parts by weight of silica sol having an average particle diameter of 10 nm was added to 100 parts by weight of the coating agent.
- the obtained evaluation film was subjected to the same hot water treatment as in Example 22, and the oxygen permeability and the adhesion strength before and after the hot water treatment were measured. The evaluation results are shown in Table 10.
- Reference Example 14 The same operation as in Example 22 was performed except that the polyester resin used in the coating agent of Example 22 was changed to a polyester resin having a glass transition temperature of 57 ° C, a molecular weight of 3,000, and an acid value of 42 mgKOH / g, and was evaluated. Film was prepared. The obtained evaluation film was subjected to the same hot water treatment as in Example 22, and the oxygen permeability and the adhesion strength before and after the hot water treatment were measured. The evaluation results are shown in Table 10.
- the polyester resin used in the coating agent of Example 22 was changed to that of Example 22 except that the polyester resin in the coating agent was changed to a polyester resin having a glass transition temperature of 82 ° C, a molecular weight of 15,000, and an acid value of 18 mgKOH / g.
- the same operation was performed to prepare an evaluation film.
- the obtained evaluation film was subjected to the same hot water treatment as in Example 22, and the oxygen permeability and the adhesion strength before and after the hot water treatment were measured.
- the evaluation results are shown in Table 11.
- a film for evaluation was prepared in the same manner as in Example 22, except that a coating agent comprising 85 parts by weight of a urethane resin and 15 parts by weight of oxazoline resin was used as a coating agent.
- the obtained film for evaluation was subjected to the same hot water treatment as in Example 22, and the oxygen permeability and the adhesion strength before and after the hot water treatment were measured. The evaluation results are shown in Table 11.
- a film for evaluation was prepared in the same manner as in Example 22, except that the coating layer was not provided.
- the obtained evaluation film was subjected to the same hot water treatment as in Example 22, and the oxygen permeability and the adhesion strength before and after the hot water treatment were measured. The evaluation results are shown in Table 11.
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Laminated Bodies (AREA)
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/599,065 US7910213B2 (en) | 2004-03-25 | 2005-03-23 | Gas-barrier laminate |
KR1020067019638A KR101156387B1 (ko) | 2004-03-25 | 2005-03-23 | 가스 배리어성 적층체 |
EP05721289A EP1728622A4 (en) | 2004-03-25 | 2005-03-23 | LAMINATES WITH GASPER PROPERTIES |
CN2005800049816A CN1922005B (zh) | 2004-03-25 | 2005-03-23 | 阻气性叠层体 |
US13/022,283 US20110129654A1 (en) | 2004-03-25 | 2011-02-07 | Gas-barrier laminate |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004-090039 | 2004-03-25 | ||
JP2004090039A JP4337596B2 (ja) | 2004-03-25 | 2004-03-25 | ガスバリア性積層体 |
JP2004253341A JP4475066B2 (ja) | 2004-08-31 | 2004-08-31 | ガスバリア性積層体 |
JP2004-253341 | 2004-08-31 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US13/022,283 Continuation US20110129654A1 (en) | 2004-03-25 | 2011-02-07 | Gas-barrier laminate |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005092607A1 true WO2005092607A1 (ja) | 2005-10-06 |
Family
ID=35056060
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2005/005189 WO2005092607A1 (ja) | 2004-03-25 | 2005-03-23 | ガスバリア性積層体 |
Country Status (5)
Country | Link |
---|---|
US (2) | US7910213B2 (ja) |
EP (1) | EP1728622A4 (ja) |
KR (1) | KR101156387B1 (ja) |
CN (2) | CN101786350B (ja) |
WO (1) | WO2005092607A1 (ja) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2007245433A (ja) * | 2006-03-14 | 2007-09-27 | Tohcello Co Ltd | ガスバリアフィルム |
JP2007283612A (ja) * | 2006-04-14 | 2007-11-01 | Tohcello Co Ltd | ガスバリアフィルム |
WO2012091122A1 (ja) * | 2010-12-28 | 2012-07-05 | 三菱樹脂株式会社 | 積層防湿フィルム |
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- 2005-03-23 WO PCT/JP2005/005189 patent/WO2005092607A1/ja active Application Filing
- 2005-03-23 KR KR1020067019638A patent/KR101156387B1/ko active IP Right Grant
- 2005-03-23 EP EP05721289A patent/EP1728622A4/en not_active Withdrawn
- 2005-03-23 CN CN2005800049816A patent/CN1922005B/zh active Active
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2011
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Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007245433A (ja) * | 2006-03-14 | 2007-09-27 | Tohcello Co Ltd | ガスバリアフィルム |
JP2007283612A (ja) * | 2006-04-14 | 2007-11-01 | Tohcello Co Ltd | ガスバリアフィルム |
WO2012091122A1 (ja) * | 2010-12-28 | 2012-07-05 | 三菱樹脂株式会社 | 積層防湿フィルム |
Also Published As
Publication number | Publication date |
---|---|
CN1922005A (zh) | 2007-02-28 |
KR20060134116A (ko) | 2006-12-27 |
KR101156387B1 (ko) | 2012-06-13 |
CN101786350B (zh) | 2011-07-27 |
EP1728622A4 (en) | 2011-06-29 |
US20110129654A1 (en) | 2011-06-02 |
US7910213B2 (en) | 2011-03-22 |
CN1922005B (zh) | 2010-12-08 |
CN101786350A (zh) | 2010-07-28 |
EP1728622A1 (en) | 2006-12-06 |
US20070224402A1 (en) | 2007-09-27 |
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