WO2007125742A1 - コーティング液、それを用いたガスバリア性フィルム、ガスバリア性積層体及びガスバリア性多層フィルム、並びにそれらの製造方法 - Google Patents
コーティング液、それを用いたガスバリア性フィルム、ガスバリア性積層体及びガスバリア性多層フィルム、並びにそれらの製造方法 Download PDFInfo
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- WO2007125742A1 WO2007125742A1 PCT/JP2007/057777 JP2007057777W WO2007125742A1 WO 2007125742 A1 WO2007125742 A1 WO 2007125742A1 JP 2007057777 W JP2007057777 W JP 2007057777W WO 2007125742 A1 WO2007125742 A1 WO 2007125742A1
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- WIPO (PCT)
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- coating liquid
- polycarboxylic acid
- gas
- metal compound
- acid polymer
- Prior art date
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/50—Multilayers
- B05D7/52—Two layers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
- C08J7/0427—Coating with only one layer of a composition containing a polymer binder
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
- C08J7/043—Improving the adhesiveness of the coatings per se, e.g. forming primers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
- C08J7/048—Forming gas barrier coatings
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
- C08J7/052—Forming heat-sealable coatings
-
- 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
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2400/00—Characterised by the use of unspecified polymers
- C08J2400/10—Polymers characterised by the presence of specified groups, e.g. terminal or pendant functional groups
- C08J2400/104—Polymers characterised by the presence of specified groups, e.g. terminal or pendant functional groups containing oxygen atoms
- C08J2400/105—Polymers characterised by the presence of specified groups, e.g. terminal or pendant functional groups containing oxygen atoms containing carboxyl groups
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2433/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers
- C08J2433/02—Homopolymers or copolymers of acids; Metal or ammonium salts thereof
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/008—Additives improving gas barrier properties
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
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- 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]
- Y10T428/31855—Of addition polymer from unsaturated monomers
Definitions
- the present invention is susceptible to deterioration due to the influence of oxygen or the like, and is used for packaging materials for precision metal parts such as foods, beverages, medicines, pharmaceuticals, and electronic parts, as well as high-temperature hot water conditions such as boil and retort sterilization.
- WO03Z091317 pamphlet (Document 1) is a film made of a polycarboxylic acid polymer and a polyvalent metal compound, and the film A film having an infrared absorption spectrum peak ratio (A1560ZA1700) of 0.25 or more is disclosed, and in the specification, a polycarboxylic acid polymer layer and a polyvalent metal compound layer adjacent to each other are laminated.
- a technique for crosslinking a polycarboxylic acid polymer with a polyvalent metal after forming a body is described.
- polycarboxylic acids include sodium hydroxide, lithium hydroxide, potassium hydroxide hydroxide, Magnesium hydroxide, calcium hydroxide, hydroxide It is described that a material partially neutralized with an alkali such as norium, aluminum hydroxide, or ammonia is used.
- gasnolia films such as those described in the above-mentioned literature and the like and packages using these films have a problem in that the performance deteriorates depending on the manufacturing process and application. I helped. That is, in the process of manufacturing the film or package, the end face of the film package comes into contact with cold water, is contaminated by the adhesion of cold water, or is washed before being sterilized by heating. In addition, when exposed to cold water, such as by dipping treatment, whitening may occur, and gas noliativity and transparency may be impaired.
- the present invention has been made in view of the above-described problems of the prior art.
- the packaging material is used for heat sterilization packaging, the packaging material is exposed to cold water of 30 ° C or lower. Even so, the occurrence of whitening is sufficiently prevented, and a coating solution for obtaining a packaging material having excellent gas noliativity and transparency, gas noria film, gas noria laminate and gas nolia multilayer film using the same.
- an object is to provide a manufacturing method thereof.
- the present inventors have found that the first solvent and 0.1 to 30 parts by mass of a polycarboxylic acid polymer with respect to 100 parts by mass of the solvent. And 0.01 to 0.35 chemical equivalent of an alkali metal compound with respect to the amount of the carboxyl group in the polycarboxylic acid polymer, and 0.05 to 0.75 with respect to the amount of the carboxyl group.
- a packaging material using a coating solution containing a polyvalent metal compound in a chemical equivalent and the number average molecular weight of the polycarboxylic acid polymer is in the range of 40,000-10,000,000
- the packaging material is exposed to cold water of 30 ° C or less (e.g., before the film or the package is in contact with the cold water, contaminated by the adhesion of cold water, or before being sterilized by heating)
- cold water 30 ° C or less (e.g., before the film or the package is in contact with the cold water, contaminated by the adhesion of cold water, or before being sterilized by heating)
- Whitening even if it is exposed to cold water like Generation is sufficiently prevented, found that it is possible to obtain a packaging material which have a good Gasunoria resistance and transparency even teeth force, thereby completing the present invention.
- the coating liquid of the present invention comprises a first solvent and 0.1-30 with respect to 100 parts by mass of the solvent.
- the gas barrier film of the present invention comprises a first solvent, 0.1 to 30 parts by mass of a polycarboxylic acid polymer with respect to 100 parts by mass of the solvent, and the polycarboxylic acid polymer in the polycarboxylic acid polymer.
- a polycarboxylic acid polymer with respect to 100 parts by mass of the solvent
- the polycarboxylic acid polymer in the polycarboxylic acid polymer.
- 0.01-0.35 chemical equivalents of an alkali metal compound with respect to the amount of carboxyl groups and 0.05-5.75 equivalents of a polyvalent metal compound with a chemical equivalent of 0.75 with respect to the amount of carboxyl groups.
- the gas noble laminate of the present invention includes a first solvent, 0.1 to 30 parts by mass of a polycarboxylic acid polymer with respect to 100 parts by mass of the solvent, and the polycarboxylic acid polymer. 0.01-0.35 chemical equivalent of an alkali metal compound with respect to the amount of the carboxyl group therein, and 0.05-0.75 equivalent of a polyvalent metal compound with a chemical equivalent of 0.55 with respect to the amount of the carboxyl group.
- a coating liquid in which the number average molecular weight of the polycarboxylic acid polymer is in the range of 40,000 to 10,000,000,000 A) force formed layer (a), the polyvalent A layer (b) formed from a coating liquid (B) containing a metal compound and a second solvent, and a support, and the coating liquid (A) force is also formed on at least one side of the support.
- the layer (a) and the layer (b) formed from the coating liquid (B) have at least one pair of laminated units adjacent to each other. It is.
- the gas barrier multilayer film of the present invention comprises the gas barrier laminate and a plastic film laminated on at least one surface of the gas barrier laminate.
- a packaging material of the present invention comprises the gas no laminate.
- a package of the present invention includes the gas no laminate.
- the method for producing a gas barrier film of the present invention includes a first solvent, 0.1 to 30 parts by mass of a polycarboxylic acid-based polymer with respect to 100 parts by mass of the solvent, and the polycarboxylic acid-based polymer. 0.01 to 0.35 chemical equivalent of an alkali metal compound relative to the amount of carboxyl groups in the coalescence, and 0.05 to 0.575 chemical equivalent of a polyvalent metal compound relative to the amount of carboxyl groups.
- the coating liquid (A) containing the polycarboxylic acid polymer and having a number average molecular weight in the range of 40,000 to 10,000,000, 000 is applied to at least one surface of the support and then dried. This is a method for obtaining a gas barrier film having a layer (a) formed from the coating liquid (A).
- the method for producing a gas barrier laminate of the present invention comprises a first solvent, 0.1 to 30 parts by mass of a polycarboxylic acid polymer with respect to 100 parts by mass of the solvent, and the polycarboxylic acid system. 0.01 to 0.35 chemical equivalent of an alkali metal compound with respect to the amount of carboxyl groups in the polymer, and 0.05 to 0.575 chemical equivalent of a polyvalent metal compound with respect to the amount of carboxyl groups described above. And a coating liquid (A) in which the polycarboxylic acid polymer has a number average molecular weight in the range of 40,000 to 10,000,000, 000, and the polyvalent metal compound and the second solvent.
- the method for producing a gas barrier multilayer film of the present invention comprises a first solvent, 0.1 to 30 parts by mass of a polycarboxylic acid polymer with respect to 100 parts by mass of the solvent, and the polycarboxylic acid type 0.01 to 0.35 chemical equivalent of an alkali metal compound with respect to the amount of carboxyl groups in the polymer, and 0.05 to 0.575 chemical equivalent of a polyvalent metal compound with respect to the amount of carboxyl groups.
- the coating liquid (B) is applied to at least one side of the support and dried to obtain a gas no multilayer laminate, and then a plastic film is laminated on at least one side of the gas no no laminate. This is a method for obtaining a film.
- the packaging material using the coating liquid of the present invention has a packaging material of 30 ° C or less. The reason why whitening can be sufficiently prevented even when exposed to cold water and a packaging material having excellent gas noliacity and transparency can be obtained, but it is not necessarily clear. They guess as follows.
- the swelling of the polycarboxylic acid polymer and the crosslinking derived from the polyvalent metal compound proceed simultaneously.
- the progress of crosslinking derived from the polyvalent metal compound in the layer having a polycarboxylic acid-based polymer strength is slow. Swelling of the carboxylic acid polymer occurs preferentially. After the swelling of the polycarboxylic acid polymer preferentially progresses due to moisture that has penetrated into the layer that also has the polycarboxylic acid polymer strength, cross-linking derived from the polyvalent metal compound was made in the polycarboxylic acid polymer layer.
- the present inventors cannot maintain a uniform layer due to the influence of moisture in the polycarboxylic acid polymer layer, and as a result, whitening occurs, and gas noirality and transparency are impaired. Guess.
- the crosslinking derived from the polyvalent metal compound in the polycarboxylic acid layer is sufficiently advanced before the packaging material is exposed to cold water.
- the present inventors speculate that the water resistance of the polymer layer is improved, so that the occurrence of whitening can be sufficiently prevented, and a packaging material having excellent gas nooricity and transparency can be obtained. To do.
- the packaging material when used for heat sterilization packaging, the occurrence of whitening is sufficiently prevented even when the packaging material is exposed to cold water of 30 ° C or lower,
- a coating liquid for obtaining a packaging material having excellent gas-no-reality and transparency, a gas-nore film using the same, a gas-no-rear laminate, a gas-no-rear multilayer film, and a method for producing them are provided. It becomes possible to do.
- the coating liquid (A) of the present invention comprises a solvent, 0.1 to 30 parts by mass of a polycarboxylic acid polymer with respect to 100 parts by mass of the solvent, and the amount of carboxyl groups in the polycarboxylic acid polymer.
- a solvent 0.1 to 30 parts by mass of a polycarboxylic acid polymer with respect to 100 parts by mass of the solvent, and the amount of carboxyl groups in the polycarboxylic acid polymer.
- 0.01 to 0.35 chemistry Containing an equivalent amount of an alkali metal compound and 0.05 to 0.55 equivalent of a polyvalent metal compound with respect to the amount of the carboxyl group, and the number average molecular weight of the polycarboxylic acid polymer is 0, It is in the range of 0000-10, 000, 000.
- the first solvent according to the present invention is a medium of a polycarboxylic acid polymer described later, an alkali metal compound described later, and a polyvalent metal compound.
- a first solvent examples include water, methyl alcohol, ethyl alcohol, isopropyl alcohol, n- propyl alcohol, n-butyl alcohol, n-pentyl alcohol, dimethyl sulfoxide, dimethyl formamide, and dimethyl acetate.
- Examples thereof include amide, toluene, hexane, heptane, cyclohexane, acetone, methyl ethyl ketone, jetyl ether, dioxane, tetrahydrofuran, ethyl acetate, and butyl acetate.
- water, methyl alcohol, ethyl alcohol, and isopropyl alcohol are preferable from an environmental point of view, and water is preferable from the viewpoint of solubility of the polycarboxylic acid polymer and the polyvalent metal compound.
- These first solvents may be used alone or in combination of two or more.
- the polycarboxylic acid polymer useful in the present invention is a polymer obtained by polymerizing a polycarboxylic acid-based polymerizable monomer, and is a polymer having two or more carboxyl groups in the molecule.
- Examples of such polycarboxylic acid-based polymers include a, j8-monoethylenically unsaturated rubonic acid (co) polymers; ⁇ , ⁇ monoethylenically unsaturated carboxylic acids and other ethylenically unsaturated polymers. Copolymers with saturated monomers; acidic polysaccharides having a carboxyl group in the molecule such as alginic acid, carboxymethylcellulose, and pectin. These polycarboxylic acid polymers may be used alone or in combination of two or more.
- ⁇ -monoethylenically unsaturated carboxylic acid examples include alicyclic acid, methacrylic acid, itaconic acid, maleic acid, fumaric acid, and crotonic acid.
- examples of the ethylenically unsaturated monomer copolymerizable with these ⁇ and ⁇ monoethylenically unsaturated carboxylic acids include saturated carboxylic acids such as ethylene, propylene, and butyl acetate. Examples include acid butyl esters, alkyl acrylates, alkyl methacrylates, alkyl itaconates, butyl chloride, salt vinylidene, styrene, acrylamide, and acrylonitrile.
- acrylic acid, methacrylic acid, itaconic acid, maleic acid from the viewpoint of gas barrier properties of the obtained gas barrier film, gas barrier laminate, and gas barrier multilayer film. It is preferable to use a (co) polymer of at least one polymerizable monomer selected from the group consisting of fumaric acid and crotonic acid, and mixtures thereof.
- Acrylic acid, methacrylic acid, maleic acid Group power of force Polyacrylic acid, polymethacrylic acid, polymaleic acid, and mixtures thereof more preferably using (co) polymers of at least one polymerizable monomer and mixtures thereof selected It is particularly preferred to use it.
- a film-like molded product of the polycarboxylic acid polymer alone as a raw material is used.
- an oxygen permeation coefficient of 1000 cm 3 (S TP) ⁇ / z mZn ⁇ 'day MPa or less at a temperature of 30 ° C and a relative humidity of 0% 500 cm 3 (STP) ⁇ / z mZn ⁇ 'It is more preferable to use one that is less than day MPa 100cm 3 (STP) ⁇ / z mZn ⁇ ' It is particularly preferred to use one that is less than day MPa 70cm 3 (STP) ⁇ ⁇ Most preferably, mZm 2 'day' MPa or less is used.
- the oxygen permeability coefficient at 30 ° C and 0% relative humidity is the measured value of oxygen permeability [unit: cm 3 (STP) / rn ⁇ day-MPa] at 30 ° C and 0% relative humidity. Is multiplied by the film thickness (unit: ⁇ m).
- the number average molecular weight (Mn) force of such a polycarboxylic acid polymer measured by the GPC method is in the range of 0.0000 to 10,000,000. Is necessary. If the number average molecular weight is less than 40,000, the resulting gas barrier film will not be able to achieve sufficient water resistance, and a packaging material in which the occurrence of whitening will be sufficiently prevented due to poor gas noirality and transparency. Can't get. On the other hand, if it exceeds 10,000,000, the coating solution is high in viscosity and the coating suitability is impaired. Further, from the viewpoint of water resistance of the obtained gas norelic film, such a polycarboxylic acid polymer is used.
- Number average molecular weight force of s 70, 000 to 5,000, 000 in force S preferably in the range of 100,000, 3,000, 000, 000, more preferably in force S, 150, 000 to 2,000 , 000 is particularly preferable.
- Polycarboxylic acid polymers with different number average molecular weights may be blended in a predetermined amount! ,.
- the content of such a polycarboxylic acid polymer is in the range of 0.1 to 30 parts by mass with respect to 100 parts by mass of the solvent. It is necessary to be. When the content is less than 0.1 part by mass, sufficient gas nooriety cannot be achieved in the obtained gas barrier film. On the other hand, if it exceeds 30 parts by mass, the coating solution becomes unstable and a uniform film cannot be obtained. Furthermore, from the viewpoint of the stability of the coating liquid and the suitability for coating, the content power of such a polycarboxylic acid polymer should be in the range of 0.5 to 20 parts by mass with respect to 100 parts by mass of the solvent. Preferred 1 ⁇ : More preferred to be in the range of L0 parts by mass.
- the alkali metal compound useful in the present invention refers to alkali metals and their compounds.
- alkali metals include lithium, sodium, potassium, rubidium, cesium, and francium.
- alkali metal compounds include alkali metal oxides, hydroxides, carbonates, organic acid salts, and inorganic acid salts.
- organic acid salts include formate, acetate, oxalate, citrate, and lactate.
- examples of such inorganic acid salts include chlorides, sulfates, nitrates, and phosphates.
- sodium and potassium are preferred to use sodium compounds and potassium compounds from the viewpoint of gas barrier properties of the obtained gas barrier film, gas barrier laminate, and gas barrier multilayer film. It is more preferable to use a hydroxide or a carbonate thereof.
- the form of these alkali metal compounds may be particulate or non-particulate, but is preferably particulate from the viewpoint of solubility.
- the average particle size of such particles is not particularly limited, but from the viewpoint of solubility, it is preferably 1 cm or less, more preferably 7 mm or less.
- the content of such an alkali metal compound is 0.01 to 0.00 with respect to the amount of carboxyl groups in the polycarboxylic acid polymer. It must be in the range of 35 chemical equivalents. If the content is less than 0.01 chemical equivalent, the coating solution becomes unstable and a uniform film cannot be obtained.
- the gas equivalent film exceeds 0.35 scientific equivalents, sufficient water resistance cannot be achieved, and deterioration of gas barrier properties and transparency, and occurrence of whitening are sufficiently prevented.
- the packaging material cannot be obtained.
- the content of such an alkali metal compound is determined based on the polycarboxylic acid heavy weight. The range of 0.01 to 30.30 chemical equivalents is preferred with respect to the amount of carboxyl groups in the coalescence, and the range of 0.01 to 0.20 chemical equivalents is more preferred.
- the water resistance of the obtained gas-noisy film is improved.
- the polyvalent metal compound according to the present invention refers to a single polyvalent metal atom having a metal ion valence of 2 or more, and compounds thereof.
- examples of such polyvalent metals include alkaline earth metals such as beryllium, magnesium, and calcium; transition metals such as titanium, zirconium, chromium, manganese, iron, conoleto, nickel, copper, and zinc; and aluminum. Can be mentioned.
- polyvalent metal compounds examples include oxides, hydroxides, carbonates, organic acid salts, or inorganic acid salts of the polyvalent metals; ammonia complexes of the polyvalent metals or Examples thereof include secondary to quaternary amine complexes or carbonates or organic acid salts thereof; Furthermore, examples of such organic acid salts include formate, acetate, oxalate, citrate, and lactate. Examples of such inorganic acid salts include chlorides, sulfates, nitrates, and phosphates.
- alkaline earths are preferred to use divalent metal compounds from the viewpoints of gas barrier properties, resistance to high-temperature steam and hot water, and manufacturability.
- Metal, cobalt, nickel, copper or zinc oxides, hydroxides, chlorides or carbonates; use of cobalt, nickel, copper or zinc ammonium complexes, or their carbonates Preferred magnesium, calcium, copper or zinc oxides, hydroxides, chlorides or carbonates; copper or zinc ammonium complexes or their carbonates may be used. Particularly preferred.
- the form of these polyvalent metal compounds may be particulate or non-particulate! /, But is preferably particulate from the viewpoint of solubility.
- the average particle diameter of such particles is not particularly limited, but from the viewpoint of solubility, it is preferably 50 m or less, more preferably 30 ⁇ m or less, and more preferably 10 ⁇ m or less. It is particularly preferred.
- the content of such a polyvalent metal compound is 0.05 to 0.00 with respect to the amount of carboxyl groups in the polycarboxylic acid polymer.
- the content of such a polyvalent metal compound is 0 with respect to the amount of carboxyl groups in the polycarboxylic acid polymer.
- a range of 05 to 0.60 chemical equivalents is preferable, and a range of 0.07 to 0.50 chemical equivalents is more preferable.
- the resulting gas barrier film, gas barrier laminate, gas nore multilayer film Additives such as inorganic layered composites typified by other polymers, softeners, stabilizers, antiblocking agents, pressure-sensitive adhesives, montmorillonites, etc., can be added as long as the gas barrier properties of the resin are not impaired. it can.
- the content of the additive is preferably in the range of 0.1 to L00 parts by mass with respect to 100 parts by mass of the polycarboxylic acid polymer.
- the gas-nore film of the present invention includes a layer (a) formed from the coating liquid (A) described above and a support described later, and the coating liquid (A) is provided on at least one side of the support. It has a layer (a) that is formed.
- the gas barrier laminate of the present invention comprises a layer (a) formed from the coating liquid (A) described above, a layer (b) formed from a coating liquid (B) described later, and a support described later.
- the layer (a) formed from the coating liquid (A) and the layer (b) formed from the coating liquid (B) are adjacent to each other on at least one surface of the support. It has a unit.
- the support according to the present invention is for sequentially laminating the layer (a) in which the aforementioned coating liquid (A) force is also formed and the layer (b) formed from the coating liquid (B) described later.
- the form of such a support is not particularly limited, and examples thereof include forms of a film such as a film, a sheet, a bottle, a cup, and a tray.
- Examples of the material of the support include metals, glasses, papers, and plastics (including metal-deposited plastics). Furthermore, among these materials, plastic materials such as low-density polyethylene, high-density polyethylene, linear low-density polyethylene, polypropylene, poly-4-methylpentene, and cyclic polyolefins such as cyclic polyolefins are used.
- Atalinole polymers such as polymethyl acrylate, polyethyl acrylate, polymethyl methacrylate, polyethyl methacrylate, poly tert.
- Polyimide polymer and its copolymer Alkyd resin, melamine resin, acrylic resin, nitrified cotton, urethane resin, unsaturated polyester resin, phenol resin, amino resin, fluorine resin, paint Examples thereof include resin such as epoxy resin; natural high molecular compounds such as cellulose, starch, pullulan, chitin, chitosan, dalcomannan, agarose and gelatin.
- such a support has improved adhesion to the layer (a) formed from the coating liquid (A) described above or a layer (b) formed from the coating liquid (B) described later.
- the surface of the support that has been subjected to surface activation treatment by corona treatment, flame treatment, plasma treatment, etc. may be used.
- the provided one may be used.
- the resin used for such an adhesive layer is not particularly limited as long as it is used for dry lamination, anchor coating, and primer.
- alkyd resin, melamine It is possible to use resin, acrylic resin, nitrified cotton, urethane resin, polyester resin, phenol resin, amino resin, fluorine resin, epoxy resin.
- the coating liquid (B) according to the present invention contains the polyvalent metal compound and a second solvent.
- a polyvalent metal compound examples include those described above.
- the form of such a polyvalent metal compound is preferably particulate.
- the average particle size of the particles of the polyvalent metal compound may be the same average particle size as that of the polyvalent metal compound used in the coating liquid (A) described above, but the gas noorieity and coating suitability are the same. In view of the above, the average particle diameter is preferably 5 ⁇ m or less, more preferably 1 ⁇ m or less, and particularly preferably 0.1 m or less.
- Examples of the second solvent useful in the present invention include water, methyl alcohol, ethyl alcohol, isopropyl alcohol, n-propyl alcohol, n-butyl alcohol, n-pentyl alcohol, dimethyl sulfoxide, and dimethyl.
- methyl alcohol, ethyl alcohol, isopropyl alcohol, toluene, and ethyl acetate are preferable from the viewpoint of coating properties
- methyl alcohol, ethyl alcohol, isopropyl alcohol, and water are preferable from the viewpoint of productivity.
- water can be used as the second solvent.
- these second solvents may be used alone or in combination of two or more.
- additives such as a resin, a dispersant, a surfactant, a softener, a stabilizer, a film forming agent, an antiblocking agent, and an adhesive are added. It can be added as appropriate.
- a coating liquid (B) it is preferable to mix and use a soluble or dispersible resin in the solvent system used for the purpose of improving coating suitability and film forming property.
- a soluble or dispersible resin examples include, for example, alkyd resin, melamine resin, acrylic resin, nitrified cotton, urethane resin, polyester resin, phenol resin, amino acid resin.
- the resin used for coatings such as resin, fluorine resin, and epoxy resin.
- a dispersant that is soluble or dispersible in the solvent system used may be mixed and used. It is preferable.
- the dispersant soluble or dispersible in the solvent system used in this way include, for example, acrylamide, acrylic acid, acrylic acid ester, neutralized acrylic acid, allylitryl, adipic acid, adipic acid ester, adipine.
- Acid neutralized product azelaic acid, abietic acid, aminododecanoic acid, arachidic acid, arlyamine, arginine, arginic acid, albumin, ammonia, itaconic acid, itaconic acid ester, itaconic acid neutralized product, ethylene oxide, ethylene glycol , Ethylenediamine, oleic acid, kaolin, casein, strength prillic acid, strength prolatatam, xanthan gum, citrate, glycine, cristobalite, glycerin, glycerin ester, glucose, crotonic acid, kainic acid, saccharose, salicylic acid, cycloheptene, oxalic acid, Starch, stearic acid, sebacic acid, cellulose, ceresin, sorbita Nonoleate, sonolebitan stearate, sorbitan permelate, sonolebitan behenate, sorbitan la
- the content of the polyvalent metal compound and the additive in the coating liquid (B) is the content of the polyvalent metal compound and the additive in the coating liquid (B)
- It is preferably in the range of 1 to 50% by mass with respect to the total mass of (B), more preferably in the range of 3 to 45% by mass, and in the range of 5 to 40% by mass. Particularly preferred.
- the gas-nore film of the present invention comprises the layer (a) formed from the coating liquid (A) described above and the support described above, and the coating liquid (A) is provided on at least one surface of the support. It has a layer (a) to be formed.
- the thickness of the layer (a) in which the coating liquid (A) force is also formed is 0.01 to 10 m.
- a range of 0.05 to 5 ⁇ m is more preferable, and a range of 0.05 to 1 ⁇ m is particularly preferable.
- the temperature is 30.
- oxygen permeability at 0% relative humidity is preferably 1000 cm 3 (STP) / m 2 day ⁇ MPa or less 500 cm 3 (STP) Zm 2 'day' MPa or less is more preferred It is particularly preferably 100 cm 3 (STP) / 2 ⁇ day ⁇ MPa or less, and most preferably 70 cm 3 (STP) / 2 ⁇ day 'MPa or less.
- the layer (a) formed from the coating liquid (A) obtained by removing the support from such a gas barrier film has oxygen permeation at a temperature of 30 ° C. and a relative humidity of 0%.
- Degree is 1000cm 3 (STP) Zm 2 'day 500 cm 3 (STP) Zm 2 'day MPa or less is more preferred 100 cm 3 (STP) Zm 2 ' day 'MPa or less is particularly preferred 70 cm 3 (STP) Zm 2 ⁇ day ⁇ MPa is most preferred! / ,.
- the gas-noreal laminate of the present invention comprises a layer (a) formed by the aforementioned coating liquid (A) force, a layer (b) formed from the aforementioned coating liquid (B), and the above-mentioned support. And a layer unit (a) formed from the coating solution (A) and a layer (b) formed from the coating solution (B) are adjacent to each other on at least one surface of the support. It is what has.
- the thickness of the layer (a) in which the coating liquid (A) force is also formed is in the range of 0.01 to 10 m.
- a range of 0.05 to 5 ⁇ m is more preferable, and a range of 0.05 to 1 ⁇ m is particularly preferable.
- the thickness of the layer (b) formed from the coating liquid (B) is in the range of 0.01 to 10 111 from the viewpoint of gas barrier properties and productivity. It is particularly preferably in the range of 0.05 to 5 m, particularly preferably in the range of 0.05 to 1 ⁇ m.
- the lamination mode of the layer (a) formed from the coating liquid (A) and the layer (b) formed from the coating liquid (B) may be, for example, one side of the support.
- the oxygen permeability at a temperature of 30 ° C and a relative humidity of 0% is preferably 1000 cm 3 (STP) Zm 2 ⁇ day ⁇ MPa or less.
- m 3 (STP) Zm 2 ⁇ day ⁇ MPa or less is more preferable, 100 cm 3 (STP) / ⁇ ⁇ day • MPa or less is particularly preferable, 70 cm 3 (STP) / m 2 ⁇ day ⁇ MPa or less
- packaging materials for precision metal parts such as foods, beverages, chemicals, pharmaceuticals, and electronic parts
- packaging materials for precision metal parts such as foods, beverages, chemicals, pharmaceuticals, and electronic parts
- it can be suitably used as a packaging material for articles that require treatment (heat sterilization) under high-temperature hot water conditions such as retort sterilization, or a package thereof.
- a package For example, when packaging materials are used for heat sterilization packaging applications, whitening is sufficiently prevented even if the packaging materials are exposed to cold water of 30 ° C or less. Since it has excellent gas barrier properties and transparency, it can be suitably used particularly as a packaging material for heat sterilization packaging.
- a gas noble multilayer film of the present invention includes the gas noble laminate described above and a plastic film laminated on at least one side of the gas barrier laminate.
- Such a plastic film can be appropriately selected in accordance with purposes such as imparting strength, sealing properties, easy opening when sealing, imparting design properties, imparting light blocking properties, imparting moisture resistance, and the like.
- a film made of the same material as that of the plastics in the support described above can be used.
- Such plastic films may be used alone or in a laminate of two or more.
- the thickness of such a plastic film is preferably 1 to 1000 ⁇ m, more preferably 5 to 500 m, and particularly preferably 5 to 200 m. 5 to 150 / zm is most preferable.
- the oxygen permeability at a temperature of 30 ° C. and a relative humidity of 0% is preferably 1000 cm 3 (STP) / m 2 ⁇ day ⁇ MPa or less, and 500 cm 3 (STP ) / ⁇ Day ⁇ MPa or less, more preferably 100 cm 3 (STP) / 2 ⁇ day MPa or less, particularly preferably 70 cm 3 (STP) Zm 2 'day' MPa or less preferable.
- the oxygen permeability in a high humidity atmosphere of 30 ° C and 80% relative humidity is 100 cm 3 (STP) / preferably m is 2 ⁇ day ⁇ MPa or less, 70cm 3 (STP) / ⁇ ⁇ day ⁇ MPa and more preferably more than a lower tool 50cm 3 (STP) Zm 2 ' day MPa particular be less is It is preferable.
- the lamination mode of the plastic film in such a gas barrier multilayer film is not particularly limited. From the viewpoint of handling as a product, for example, polyethylene terephthalate is used.
- polyethylene terephthalate Z layer (a) Z layer (b) Z polyolefin, polyethylene terephthalate Z layer (a) Z layer (b) Z nylon Z polyolefin, polyethylene terephthalate Z layer (a) Z layer (b) Polyethylene terephthalate Z layer (a) Z layer (b) Z polyolefin, polyethylene terephthalate Z layer (a) Z layer (b) Z nylon Z polyolefin is particularly preferred.
- the method for producing a gas barrier film of the present invention comprises the step of applying the coating liquid (A) described above to at least one side of the above-mentioned support and then drying to form a layer (a) formed from the coating liquid (A) This is a method of obtaining a gas noorious film having
- the method of applying the coating solution (A) is not particularly limited! Examples include a feed reverse coater and a nozzle, a reno roll slow coater such as a feed reno coater, a five-roller coater, a lip coater, a bar coater, a bar reverse coater, and a die coater.
- a feed reverse coater and a nozzle examples include a feed reverse coater and a nozzle, a reno roll slow coater such as a feed reno coater, a five-roller coater, a lip coater, a bar coater, a bar reverse coater, and a die coater.
- the method for drying the coating liquid (A) is not particularly limited, but a method by natural drying, a method of drying in an oven set at a predetermined temperature, a dryer attached to a coater, for example, Examples of the method include using an arch dryer, a floating dryer, a drum dryer, and an infrared dryer.
- drying conditions For example, in the method of drying in an oven, the drying temperature is preferably 40 to 350 ° C, more preferably 45 to 325 ° C. A temperature of 50 to 300 ° C. is particularly preferable.
- the drying time is preferably 0.5 seconds to 10 minutes, more preferably 1 second to 5 minutes, and particularly preferably 1 second to 1 minute! /.
- the method for producing a gas- noble laminate of the present invention comprises applying the coating liquid (A) and the coating liquid (B) described above to at least one side of the support and then drying the coating liquid (A).
- a layer (a) formed from A) and a layer (b) formed from the coating solution (B) have at least one pair of stacking units adjacent to each other to obtain a gas-noir laminate.
- Examples of the method of applying the coating liquid (A) and the method of drying include the methods described above.
- a method of applying the coating liquid (B) and a method of drying the method similar to the method of applying the coating liquid (A) and the method of drying in the method for producing a gas barrier film described above are used.
- Other examples include vapor phase coating methods such as vapor deposition, sputtering, and ion plating.
- the order in which the coating liquid (A) and the coating liquid (B) are applied is as follows.
- the coating liquid (A) is applied to at least one surface of the support and dried, and then the coating liquid is applied.
- the liquid (B) may be applied and dried.
- At least one surface of the support may be coated with the coating liquid (B) and dried, and then the coating liquid (A) is applied and dried. Do it.
- the method for producing a gas no multilayer multilayer film of the present invention is a method for obtaining the gas no multilayer multilayer film described above by laminating a plastic film on at least one side of the gas barrier laminate described above.
- a known laminating method can be appropriately selected, and is not particularly limited.
- a dry laminating method, a wet lamination method, and the like examples thereof include an nate method and an extrusion lamination method.
- the oxygen permeability coefficient of the starting polycarboxylic acid polymer was measured by the following method.
- a solution obtained by diluting 5 parts by mass of polyacrylic acid (polycarboxylic acid polymer) with 100 parts by mass of water is used on a corona-treated surface of a biaxially stretched polyester film (support) with a thickness of 12 m.
- the oxygen permeability coefficient was measured using a film sample that had been coated and dried at 90 ° C for 30 seconds. That is, the oxygen permeability of the film sample was measured using an oxygen permeation tester (OX-TRAN2Z20; manufactured by MOCON) at a temperature of 30 ° C. and 0% relative humidity (RH) on both sides.
- Polyacrylic acid manufactured by Toagosei Co., Ltd., Aalon A-10H, Mn: 200, 000, oxygen permeability 50cm 3 (STP) ⁇ / ⁇ ⁇ 2 (1 & ⁇ ⁇ ⁇ &) 5 parts by mass of water 100 parts by mass
- a coating liquid (A) was prepared by adding 0.30 chemical equivalent of zinc oxide (particulate, particle size 5 ⁇ m) and stirring at room temperature for 2 days.
- polyacrylic acid (Alon A—10H)
- polyacrylic acid manufactured by Polysciences, Mn: 50, 000, oxygen permeability coefficient 50 cm 3 (STP) mZm 2 'day' MPa
- STP oxygen permeability coefficient 50 cm 3
- a coating solution (A) was prepared in the same manner as in Example 1.
- Example 3 Other than using 0.05 sodium hydroxide equivalent of sodium hydroxide as alkali metal compound and 0.1 chemical equivalent of calcium salt (particulate, particle size 5 m) as polyvalent metal compound. was the same as in Example 1 to prepare a coating solution (A).
- a coating solution (A) was prepared in the same manner as in Example 1 except that 0.40 chemical equivalent of calcium hydroxide was used as the polyvalent metal compound.
- a coating solution (A) was prepared in the same manner as in Example 1 except for the above.
- a comparative coating solution (A) was prepared in the same manner as in Example 4 except that an alkali metal compound was added.
- * 1 Indicates mass parts of polycarboxylic acid relative to 100 mass parts of water.
- the coating solution (A) obtained in Example 1 was applied to the corona-treated surface of a 12-m thick biaxially stretched polyester film (support) using a Mayer bar and dried at 90 ° C for 30 seconds. After drying, a gas nore film having a thickness of 0.3 ⁇ m of the layer (a) formed from the coating liquid (A) was obtained.
- Example 10 instead of the coating liquid (A) obtained in Example 1, the coating liquid (A) obtained in Example 2 (Example 7) and the coating liquid (A) obtained in Example 3 (Example 8) ), Coating liquid (A) obtained in Example 4 (Example 9), or coating liquid (A) obtained in Example 5 (Example 10) A gas noorious film was obtained.
- polyacrylic acid manufactured by Toagosei Co., Ltd., Aalon A-10H, Mn: 200, 000, oxygen permeability 50 cm 3 (STP) ⁇ / ⁇ ⁇ 2 (1 & ⁇ ⁇ ⁇ &) 5 parts by weight in water
- a comparative coating solution ( ⁇ ) was prepared by diluting with 100 parts by mass, and the obtained comparative coating solution ( ⁇ ) was used instead of the coating solution ( ⁇ ) obtained in Example 1.
- a comparative gas noorious film was obtained in the same manner as in Example 6 except that it was used.
- polyacrylic acid manufactured by Toagosei Co., Ltd., Aaron ⁇ -10 ⁇ , ⁇ : 200,000, oxygen permeability coefficient 50cm 3 (STP) ⁇ / ⁇ ⁇ 2 ⁇ (1 & ⁇ ⁇ ⁇ &) 5 parts by weight in water Dilute with 100 parts by mass, and then add 0.03 chemical equivalent of hydroxyl power to the amount of carboxyl group of polyacrylic acid and stir at room temperature for 2 days. Then, instead of the coating solution ( ⁇ ) obtained in Example 1, the comparative coating solution ( ⁇ ) obtained was used in the same manner as in Example 6 for comparison. A gas noorious film was obtained.
- STP oxygen permeability coefficient 50cm 3
- polyacrylic acid manufactured by Nippon Pure Chemical Co., Ltd., Jurimer AC-10L, Mn: 25,000, oxygen permeability coefficient 50cm 3 (STP) ⁇ / ⁇ ⁇ 2 ⁇ (1 & ⁇ ⁇ ⁇ &) 5 parts by mass
- STP oxygen permeability coefficient 50cm 3
- ⁇ 0.05-equivalent sodium hydroxide
- 0 a polyvalent metal compound with respect to the amount of carboxyl groups in polyacrylic acid.
- 15 chemical equivalents of zinc oxide and zinc were added and stirred at room temperature for 2 days to prepare a comparative coating solution ( ⁇ ), and instead of the coating solution ( ⁇ ) obtained in Example 1.
- a comparative gas-nore film was obtained in the same manner as in Example 6 except that the obtained comparative coating solution ( ⁇ ) was used.
- the obtained gas-nore film was immersed in cold water at a temperature of 20 ° C. for 1 second, and the taken-out sample was used as a film sample to measure oxygen permeability, and the water resistance of the gas barrier film was evaluated based on the measured value. . That is, using an oxygen permeation tester (OX-TRAN2Z20; manufactured by MOCON), the oxygen permeability of the film sample was measured under the conditions of a temperature of 30 ° C. and 0% relative humidity (RH) on both sides.
- OX-TRAN2Z20 oxygen permeation tester
- the measured oxygen permeability is 50 cm 3 (STP) Zm 2 'da
- STP serum
- a case of 50 cm 3 (STP) / ⁇ day ⁇ MPa or more was judged as “fail”.
- Table 2 shows the results obtained and the composition of the coating solutions used in the examples and comparative examples.
- the results of measuring the oxygen permeability of the biaxially stretched polyester film having a thickness of 12 / zm are shown in Table 2 as Reference Example 1.
- the gas barrier film of the present invention was excellent. It was confirmed to have water resistance.
- the coating liquid (A) obtained in Example 1 was applied to the corona-treated surface of a biaxially stretched polyester film (support) having a thickness of 12 / zm using a Mayer bar, and the temperature was 90 °. After drying for 30 seconds at C, a layer (a) formed from a coating solution (A) having a thickness of 0.3 ⁇ m was formed.
- a coating liquid (B) obtained by dispersing 10 parts by mass of zinc oxide fine particles having an average particle diameter of 20 nm in 100 parts by mass of water was applied to the surface of the layer (a) using a Mayer bar, and the temperature was 90.
- a layer (b) formed from a coating solution (B) having a thickness of 0.5 m was formed by drying at ° C for 30 seconds to produce a gas no laminate.
- Example 14 a coating layer (A) obtained in Example 4 was used, and a gas-noir laminate was produced in the same manner as in Example 11.
- the coating liquid (A) used in Comparative Example 3 instead of the coating liquid (A) obtained in Example 1, the coating liquid (A) used in Comparative Example 3 (Comparative Example 8), the coating liquid used in Comparative Example 4 (A) (Comparative Example 9), Coating liquid (A) used in Comparative Example 5 (Comparative Example 10), Coating liquid (A) used in Comparative Example 6 (Comparative Example 11), or Coating liquid (A) used in Comparative Example 7 (Comparative Example 12)
- a comparative gas no laminate was produced in the same manner as in Example 11 except that (2) was used.
- the oxygen permeability was measured using the obtained gas barrier laminate as a film sample.
- the oxygen permeability of the film sample was measured using an oxygen permeation tester (OX-TRAN2Z20; manufactured by MOCON) at a temperature of 30 ° C and 0% relative humidity (RH) on both sides.
- the unit is cm 3 (STP) / m 2 'day'MPa.
- the appearance of the film sample was visually observed to evaluate the water resistance of the gas-nominated laminate. Film sample is not whitened and transparent The case where the badness of brightness was not found was judged as “pass”, and the case where the film sample was found to have bad transparency due to whitening or film destruction was judged as “fail”.
- Table 3 shows the results obtained and the compositions of the coating solutions used in Examples and Comparative Examples.
- the coating liquid (A) obtained in Example 1 was applied to the corona-treated surface of a biaxially stretched polyester film (support) having a thickness of 12 / zm using a Mayer bar, and the temperature was 90 °. After drying for 30 seconds at C, a layer (a) formed from a coating solution (A) having a thickness of 0.3 ⁇ m was formed.
- zinc oxide fine particle toluene dispersion manufactured by Sumitomo Osaka Cement Co., Ltd., zinc oxide dispersion paint ZR133, solid content concentration 33% by mass
- Example 18 a coating layer (A) obtained in Example 4 was used in the same manner as in Example 15 to prepare a gas nori laminate.
- Example 17 A comparative gas no laminate was produced in the same manner as in Example 15 except that (2) was used.
- the obtained gas nori laminate was immersed in cold water at 20 ° C. for 3 minutes as a film sample, and water resistance and oxygen permeability after immersion in cold water were evaluated or measured. That is, the appearance of the film sample after immersion in cold water was visually observed to evaluate the water resistance of the gas barrier laminate. When the film sample is not whitened and the transparency is not bad Was judged as “good”, and when the film sample had whitening, it was judged as “whitening”. Further, the oxygen permeability of the film sample after immersion in cold water was measured by the same method as described above. Table 4 shows the results obtained and the compositions of the coating solutions used in the examples and comparative examples.
- the gas barrier laminate of the present invention has excellent water resistance and gas noriability even when exposed to cold water. Therefore, according to the present invention, even when the packaging material is exposed to cold water of 30 ° C. or less, the occurrence of whitening is sufficiently prevented, and the packaging has excellent gas strength and transparency. It was confirmed that the material could be obtained.
- the coating liquid (A) obtained in Example 1 was applied to the corona-treated surface of a biaxially stretched polyester film (support) having a thickness of 12 / zm using a Mayer bar, and the temperature was 90 °. After drying for 30 seconds at C, a layer (a) formed from a coating solution (A) having a thickness of 0.3 ⁇ m was formed. Next, a coating liquid (B) obtained by dispersing 10 parts by mass of zinc oxide fine particles having an average particle diameter of 20 nm in 100 parts by mass of water is applied to the surface of the layer (a) using a Mayer bar. Then, it was dried at a temperature of 90 ° C.
- an urethane adhesive was applied to the surface of the layer (b), and then a polypropylene film having a thickness of 60 ⁇ m was laminated to prepare a gas no multilayer film.
- a urethane adhesive (Takelac A-620, hardener: Takenate A-65, made by Mitsui Takeda Chemical Co., Ltd.) is applied to the corona-treated surface of a 12 m thick biaxially stretched polyester film (support). Coating was performed using a Mayer bar so as to have a thickness of 1 ⁇ m, and dried at 90 ° C. for 30 seconds to form an anchor coat layer. Then, a gas-nore multilayer film was produced in the same manner as in Example 19 except that the coating liquid (A) was applied to the surface of the anchor coat layer.
- Example 23 A gas multilayer multilayer film was prepared in the same manner as in Example 19 except that 22) was used. [0103] (Example 23)
- a gas-nore multilayer film was produced in the same manner as in Example 19 except that a biaxially stretched polyamide film having a thickness of 15 ⁇ m was used instead of the biaxially stretched polyester film having a thickness of 12 ⁇ m.
- a urethane adhesive Takelac A-620, hardener: Takenate A-65, manufactured by Mitsui Takeda Chemical Co., Ltd.
- the coating was applied using a Mayer bar to a thickness of 1 ⁇ m and dried at 90 ° C. for 30 seconds to form an anchor coat layer.
- a gas-nore multilayer film was produced in the same manner as in Example 19 except that the coating liquid (A) was applied to the surface of the anchor coat layer.
- a gas multilayer multilayer film was prepared in the same manner as in Example 19 except that the coating liquid (A) obtained in Example 4 was used instead of the coating liquid (A) obtained in Example 1. .
- Example 2 instead of the coating liquid (A) obtained in Example 1, the coating liquid (A) used in Comparative Example 3 (Comparative Example 18), the coating liquid used in Comparative Example 4 (A) (Comparative Example 19), Coating liquid (A) used in Comparative Example 5 (Comparative Example 20), Coating liquid used in Comparative Example 6 (A) (Comparative Example 21), or Coating liquid used in Comparative Example 7 (A) (Comparative Example 22 A comparative gas barrier multilayer film was prepared in the same manner as in Example 19 except that the above was used.
- the gas permeability multilayer film thus obtained was used as a film sample to measure oxygen permeability.
- the temperature was 30 using an oxygen permeation tester (OX-TRAN2Z20; manufactured by MOCON).
- the oxygen permeability of the film sample was measured under the conditions of C, both sides 0% relative humidity (RH).
- the unit is cm 3 (STP) Zm 2 'day' MPa.
- STP cm 3
- the external appearance of the film sample was visually observed to evaluate the water resistance of the gas no multilayer multilayer film. When the film sample is not whitened and no bad transparency is seen, it is judged as “pass” and the film sample is whitened or filmed. The case where the transparency was bad due to the destruction of was judged as “fail”.
- Table 5 shows the results obtained, and the compositions of the support and coating liquid (soot) used in Examples and Comparative Examples [Table 5]
- the coating liquid (A) obtained in Example 1 was applied to the corona-treated surface of a biaxially stretched polyester film (support) having a thickness of 12 / zm using a Mayer bar, and the temperature was 90 °. After drying for 30 seconds at C, a layer (a) formed from a coating solution (A) having a thickness of 0.3 ⁇ m was formed. Next, on the surface of the layer (a), a zinc oxide fine particle toluene dispersion (manufactured by Sumitomo Osaka Cement Co., Ltd., zinc oxide-dispersed paint ZR133, solid content concentration 33 mass%) is used with a Mayer bar.
- a zinc oxide fine particle toluene dispersion manufactured by Sumitomo Osaka Cement Co., Ltd., zinc oxide-dispersed paint ZR133, solid content concentration 33 mass
- a gas barrier laminate was produced.
- a urethane adhesive was applied to the surface of the layer (b), and then a polypropylene film having a thickness of 60 m was laminated to prepare a gas no multilayered film.
- a urethane adhesive (Takelac A-620, hardener: Takenate A-65, made by Mitsui Takeda Chemical Co., Ltd.) is applied to the corona-treated surface of a 12 m thick biaxially stretched polyester film (support). Coating was performed using a Mayer bar so as to have a thickness of 1 ⁇ m, and dried at 90 ° C. for 30 seconds to form an anchor coat layer. Then, a gas-nore multilayer film was produced in the same manner as in Example 26 except that the coating liquid (A) was applied to the surface of the anchor coat layer.
- Example 2 instead of the coating liquid (A) obtained in Example 1, the coating liquid (A) obtained in Example 2 (Example 28) or the coating liquid (A) obtained in Example 3 (Example) A gas multilayer multilayer film was produced in the same manner as in Example 26 except that 29) was used.
- Example 26 In the same manner as in Example 26, except that a biaxially stretched polyamide film having a thickness of 15 ⁇ m was used instead of the biaxially stretched polyester film having a thickness of 12 ⁇ m, a gas-nore multilayer film was used. Rum was made.
- a urethane adhesive Takelac A-620, hardener: Takenate A-65, manufactured by Mitsui Takeda Chemical Co., Ltd.
- the coating was applied using a Mayer bar to a thickness of 1 ⁇ m and dried at 90 ° C. for 30 seconds to form an anchor coat layer.
- a gas-nore multilayer film was produced in the same manner as in Example 26 except that the coating liquid (A) was applied to the surface of the anchor coat layer.
- a gas multilayer multilayer film was produced in the same manner as in Example 26 except that the coating liquid (A) obtained in Example 4 was used instead of the coating liquid (A) obtained in Example 1. .
- Example 27 A comparative gas barrier multilayer film was produced in the same manner as in Example 26 except that the above was used.
- the oxygen permeability (temperature 30 ° C, humidity 80% RH) in a high humidity atmosphere was measured. That is, using an oxygen permeation tester (OX-TRAN2Z20; manufactured by MOCON), the oxygen permeability of the film sample was measured under the conditions of a temperature of 30 ° C. and 80% relative humidity (RH) on both sides.
- the unit is cm 3 (STP) Zm 2 • day'MPa.
- Table 6 shows the results obtained and the compositions of the support and the coating liquid (A) used in Examples and Comparative Examples.
- the amount of polyacrylic acid in the coating liquid (A) is 5 parts by mass with respect to 100 parts by mass of water.
- * 12 Indicates the chemical equivalent of the metal compound relative to the carboxyl group of polyacrylic acid.
- the gas-noreal multilayer film of the present invention has a high-temperature hot water condition such as boiling and retort sterilization before the crosslinking derived from the polyvalent metal compound proceeds. Even before the treatment (sterilization treatment) below, it was confirmed that the oxygen gas noria property was excellent in a high humidity atmosphere.
- Example 27 The polypropylene film surfaces of the gas barrier multilayer film obtained in Example 27 were heat-sealed with an impulse sealer to produce a three-sided seal patch of size 25 cm ⁇ 15 cm. Thereafter, this bouch was filled with 200 g of water and hermetically sealed to obtain a package.
- the obtained package was immersed in water at 20 ° C for 24 hours, and the appearance and oxygen permeability of the package after the immersion treatment were evaluated or measured. That is, when the appearance of the package after the immersion treatment was visually evaluated, the transparency of the package was good.
- a portion of the package that had been soaked with heat was cut out by an impulse sealer, and the oxygen permeability was measured using the sample as a sample.
- the oxygen permeability was 14 cm 3 (STP) / day- MP a.
- the oxygen permeability was measured using an oxygen permeability tester (OX-TRAN2Z20; manufactured by MOCON) under the conditions of a temperature of 30 ° C. and 0% relative humidity (RH) on both sides.
- the obtained package was sterilized using a high-pressure kettle at a temperature of 120 ° C and a pressure of 2.5 kgZcm 2 for 30 minutes. The degree was evaluated or measured by the same method as described above. As a result, the transparency of the package after the sterilization treatment was good.
- the oxygen permeability of the sample cut out from the package after sterilization was 8 cm 3 (STP) / m 2 ⁇ day ⁇ MPa.
- a packaging material is used for heat sterilization packaging.
- the packaging material is exposed to cold water of 30 ° C or less, the occurrence of whitening is sufficiently prevented, and a packaging material having excellent gas resistance and transparency is obtained. It is possible to provide a coating liquid, a gas norelic film, a gas barrier laminate and a gas nore multilayer film using the same, and a method for producing them.
- the present invention is susceptible to deterioration due to the influence of oxygen and the like, and is processed under high-temperature hot-water conditions such as packaging materials for precision metal parts such as foods, beverages, chemicals, pharmaceuticals, and electronic parts, boil, retort sterilization, etc. It is useful as a technique for packaging materials for articles that require heat sterilization, and is particularly useful as a technique for packaging materials for heat sterilization packaging applications.
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Abstract
Description
Claims
Priority Applications (3)
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US12/226,710 US8632888B2 (en) | 2006-04-26 | 2007-04-06 | Coating solution, and gas barrier film, gas barrier laminate and gas barrier multilayer film, using the coating solution, and their manufacturing methods |
JP2008513129A JPWO2007125742A1 (ja) | 2006-04-26 | 2007-04-06 | コーティング液、それを用いたガスバリア性フィルム、ガスバリア性積層体及びガスバリア性多層フィルム、並びにそれらの製造方法 |
EP20070741213 EP2014733A4 (en) | 2006-04-26 | 2007-04-06 | COATING LIQUID, GAS BARRIER FILM, AND GAS BARRIER MULTILAYER FILM, AND PROCESSES FOR PRODUCING THE SAME |
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US (1) | US8632888B2 (ja) |
EP (1) | EP2014733A4 (ja) |
JP (1) | JPWO2007125742A1 (ja) |
WO (1) | WO2007125742A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2011063668A (ja) * | 2009-09-16 | 2011-03-31 | Toppan Printing Co Ltd | コーティング剤、その製造方法および成形体 |
US8808816B2 (en) | 2006-12-01 | 2014-08-19 | Toppan Printing Co., Ltd. | Coating liquid, gas-barrier multilayer structure and gas-barrier shaped article therefrom, and process for producing gas-barrier multilayer structure |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2014730B1 (en) * | 2006-04-26 | 2016-07-27 | Toppan Printing Co., Ltd. | Coating liquid, gas barrier film, gas barrier laminate and gas barrier multilayer film each using the coating liquid, and their production methods |
JP5815373B2 (ja) * | 2011-11-10 | 2015-11-17 | ユニチカ株式会社 | 包装材料 |
Citations (4)
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WO2003091317A1 (en) | 2002-04-23 | 2003-11-06 | Kureha Chemical Industry Company, Limited | Film and process for producing the same |
JP2004238604A (ja) * | 2002-12-09 | 2004-08-26 | Toyo Ink Mfg Co Ltd | ガスバリア層形成用塗料及び該塗料を用いて成るガスバリア性積層体 |
JP2004323817A (ja) * | 2003-04-25 | 2004-11-18 | Toyo Ink Mfg Co Ltd | ガスバリア層形成用塗料及び該塗料を用いて成るガスバリア性積層体 |
JP2005125693A (ja) | 2003-10-27 | 2005-05-19 | Tohcello Co Ltd | ガスバリア性積層フィルム |
Family Cites Families (2)
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JP2004307731A (ja) | 2003-04-09 | 2004-11-04 | Toyo Ink Mfg Co Ltd | ガスバリア性塗料 |
JP4953063B2 (ja) * | 2005-11-16 | 2012-06-13 | 凸版印刷株式会社 | 熱処理履歴のないガスバリア性積層フィルム及びその製造方法 |
-
2007
- 2007-04-06 WO PCT/JP2007/057777 patent/WO2007125742A1/ja active Application Filing
- 2007-04-06 EP EP20070741213 patent/EP2014733A4/en not_active Withdrawn
- 2007-04-06 JP JP2008513129A patent/JPWO2007125742A1/ja active Pending
- 2007-04-06 US US12/226,710 patent/US8632888B2/en not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2003091317A1 (en) | 2002-04-23 | 2003-11-06 | Kureha Chemical Industry Company, Limited | Film and process for producing the same |
JP2004238604A (ja) * | 2002-12-09 | 2004-08-26 | Toyo Ink Mfg Co Ltd | ガスバリア層形成用塗料及び該塗料を用いて成るガスバリア性積層体 |
JP2004323817A (ja) * | 2003-04-25 | 2004-11-18 | Toyo Ink Mfg Co Ltd | ガスバリア層形成用塗料及び該塗料を用いて成るガスバリア性積層体 |
JP2005125693A (ja) | 2003-10-27 | 2005-05-19 | Tohcello Co Ltd | ガスバリア性積層フィルム |
Non-Patent Citations (1)
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8808816B2 (en) | 2006-12-01 | 2014-08-19 | Toppan Printing Co., Ltd. | Coating liquid, gas-barrier multilayer structure and gas-barrier shaped article therefrom, and process for producing gas-barrier multilayer structure |
JP2011063668A (ja) * | 2009-09-16 | 2011-03-31 | Toppan Printing Co Ltd | コーティング剤、その製造方法および成形体 |
Also Published As
Publication number | Publication date |
---|---|
JPWO2007125742A1 (ja) | 2009-09-10 |
EP2014733A1 (en) | 2009-01-14 |
US20090087676A1 (en) | 2009-04-02 |
US8632888B2 (en) | 2014-01-21 |
EP2014733A4 (en) | 2011-08-03 |
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