WO2014123155A1 - ガスバリアフィルム - Google Patents
ガスバリアフィルム Download PDFInfo
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- WO2014123155A1 WO2014123155A1 PCT/JP2014/052669 JP2014052669W WO2014123155A1 WO 2014123155 A1 WO2014123155 A1 WO 2014123155A1 JP 2014052669 W JP2014052669 W JP 2014052669W WO 2014123155 A1 WO2014123155 A1 WO 2014123155A1
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- gas barrier
- film
- organic
- barrier layer
- barrier film
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/22—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the process of coating
- C23C14/24—Vacuum evaporation
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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
- B05D1/00—Processes for applying liquids or other fluent materials
- B05D1/60—Deposition of organic layers from vapour phase
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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
- B05D7/02—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 to macromolecular substances, e.g. rubber
- B05D7/04—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 to macromolecular substances, e.g. rubber to surfaces of films or sheets
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- 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
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- 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
- C08J7/06—Coating with compositions not containing macromolecular substances
- C08J7/065—Low-molecular-weight organic substances, e.g. absorption of additives in the surface of the article
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/06—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the coating material
- C23C14/12—Organic material
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/22—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the process of coating
- C23C14/56—Apparatus specially adapted for continuous coating; Arrangements for maintaining the vacuum, e.g. vacuum locks
- C23C14/562—Apparatus specially adapted for continuous coating; Arrangements for maintaining the vacuum, e.g. vacuum locks for coating elongated substrates
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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
- B05D2252/00—Sheets
- B05D2252/02—Sheets of indefinite length
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- 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
- C08J2367/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
- C08J2367/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
Definitions
- the present invention relates to a gas barrier film that is excellent in gas barrier properties against water vapor, oxygen, and the like and is suitable as a packaging film for foods, pharmaceuticals, and the like.
- a gas barrier film there has been known a gas barrier laminated film in which a thin film of an inorganic oxide such as silicon oxide or aluminum oxide (hereinafter referred to as an inorganic thin film layer) is laminated on the surface of a plastic film.
- an inorganic thin film layer a thin film of an inorganic oxide such as silicon oxide or aluminum oxide
- an organic thin film layer a thin film containing an organic substance (hereinafter referred to as an organic thin film layer) on a plastic film instead of the inorganic thin film layer. Since the organic thin film layer is more excellent in flexibility and bending resistance than the inorganic thin film layer, more excellent gas barrier properties can be exhibited.
- Patent Document 1 proposes a gas barrier laminate including an organic thin film layer (gas barrier layer) containing an organopolysiloxane.
- an organopolysiloxane having a triazine skeleton effective for gas barrier development and having a triazine dithiol group introduced into the skeleton with an effective thiol group for adhesion to the resin gas barrier properties, adhesion, flexibility
- a gas barrier layer having excellent properties can be formed.
- the method of forming the organic thin film layer on the plastic film is mostly formed by a method such as a dip method or a spin coating method.
- the organic thin film layer forming composition contains an organic polymer compound having a polar functional group as another main raw material in addition to the organopolysiloxane. Due to the large molecular weight, it is difficult to manufacture by vacuum evaporation, and it is difficult to improve the production efficiency and to stack so that the ring part contained in the organic polymer compound is flat on the surface of the organic thin film layer Met.
- the organic thin film layer forming composition contains an organic polymer compound in addition to the organopolysiloxane, and it was difficult to develop gas barrier properties with triazinedithiol alone.
- the present invention has been aimed at providing a gas barrier film including an organic thin film layer (hereinafter referred to as an organic gas barrier layer) that can be efficiently produced and has excellent gas barrier properties.
- the gas barrier film according to the present invention is a gas barrier film having an organic gas barrier layer containing a 1,3,5-triazine derivative on at least one surface of a plastic film, wherein the 1,3,5-triazine derivative is 2 , Characterized by having a group containing sulfur at the 4- and 6-positions as a substituent.
- the 1,3,5-triazine derivative is preferably triazine trithiol.
- the film thickness of the organic gas barrier layer is preferably 100 nm or more.
- the organic gas barrier layer is preferably formed on the plastic film by a vacuum deposition method.
- the gas barrier film according to the present invention has an organic gas barrier layer made of only an organic substance provided on the surface of a plastic film, and can exhibit excellent gas barrier properties.
- the gas barrier film according to the present invention can be used in the packaging field of foods, pharmaceuticals, industrial products and the like.
- an organic gas barrier layer is provided on at least one surface of the plastic film.
- the plastic film in the present invention is a film made of an organic polymer resin, melt-extruded, stretched in the longitudinal direction and / or width direction, and further heat-set and cooled.
- organic polymer resin Polyolefins such as polyethylene and polypropylene; Polyesters such as polyethylene terephthalate, polybutylene terephthalate and polyethylene-2,6-naphthalate; Polyamides such as nylon 6, nylon 4, nylon 66, nylon 12 and wholly aromatic polyamides; polyvinyl chloride, Examples thereof include polyvinylidene chloride, polyvinyl alcohol, polyamideimide, polyimide, polyetherimide, polysulfone, polyphenylene sulfide, and polyphenylene oxide. These organic polymer resins may be copolymerized in a small amount with other organic monomers or blended with other organic polymers.
- Preferred polyesters include polyethylene terephthalate, polybutylene terephthalate, polyethylene-2,6-naphthalate, and the like, and copolymers having these as main components may also be used.
- the main component of the dicarboxylic acid component is preferably an aromatic dicarboxylic acid such as terephthalic acid, isophthalic acid, phthalic acid, or 2,6-naphthalenedicarboxylic acid. And polyfunctional carboxylic acids such as trimellitic acid and pyromellitic acid; and aliphatic dicarboxylic acids such as adipic acid and sebacic acid.
- the main component of the glycol component is preferably ethylene glycol or 1,4-butanediol, and the other glycol components include aliphatic glycols such as diethylene glycol, propylene glycol and neopentyl glycol; p-xylylene glycol and the like.
- Aromatic glycol; alicyclic glycol such as 1,4-cyclohexanedimethanol; polyethylene glycol having a weight average molecular weight of 150 to 20,000 is used.
- the preferable ratio of the copolymer component in the polyester copolymer is 20% by mass or less.
- a copolymerization component exceeds 20 mass%, film strength, transparency, heat resistance, etc. may be inferior.
- These polyester copolymers may be copolymerized with a small amount of other organic monomers or blended with other organic polymers.
- Preferred polyamides include polycaproamide (nylon 6), poly- ⁇ -aminoheptanoic acid (nylon 7), poly- ⁇ -aminononanoic acid (nylon 9), polyundecanamide (nylon 11), polylaurin lactam.
- nylon 12 polyethylene diamine adipamide (nylon 2.6), polytetramethylene adipamide (nylon 4.6), polyhexamethylene adipamide (nylon 6.6), polyhexamethylene sebacamide ( Nylon 6.10), Polyhexamethylene dodecamide (Nylon 6.12), Polyoctamethylene dodecamide (Nylon 8.12), Polyoctamethylene adipamide (Nylon 8.6), Polydecamethylene adipamide ( Nylon 10.6), polydecamethylene sebacamide (nylon 10.10), Polydodecamethylene dodecamide (nylon 12 and 12), metaxylylenediamine-6 nylon (MXD6) and the like may be mentioned, and a copolymer containing these as main components may also be used.
- MXD6 metaxylylenediamine-6 nylon
- Polyamide copolymers include caprolactam / laurin lactam copolymer, caprolactam / hexamethylene diammonium adipate copolymer, laurin lactam / hexamethylene diammonium adipate copolymer, hexamethylene diammonium adipate / hexamethylene diammonium sebacate Examples include copolymers, ethylene diammonium adipate / hexamethylene diammonium adipate copolymer, caprolactam / hexamethylene diammonium adipate / hexamethylene diammonium sebacate copolymer, and the like.
- plasticizers such as aromatic sulfonamides, p-hydroxybenzoic acid, esters, elastomer components with low elastic modulus, and lactams as film flexibility modifiers. is there.
- additives such as ultraviolet absorbers, antistatic agents, plasticizers, lubricants, colorants and the like may be added to the organic polymer resin, and the transparency as a film is not particularly limited. However, when transparency is required, one having a light transmittance of 50% or more is preferable.
- a known anchor coat is applied to the plastic film before laminating the thin film layer. Processing, printing, decoration, etc. may be applied.
- the thickness of the plastic film in the present invention is preferably in the range of 3 to 500 ⁇ m, and more preferably in the range of 6 to 300 ⁇ m.
- Organic gas barrier layer The organic gas barrier layer is laminated on one side or both sides of the plastic film.
- the organic gas barrier layer contains a 1,3,5-triazine derivative.
- the 1,3,5-triazine derivative has a sulfur-containing group as a substituent at the 2,4,6 positions. It is preferable that a sulfur atom is directly bonded to the carbon atoms at the 2, 4 and 6 positions.
- the 1,3,5-triazine derivative is, for example, a 1,3,5-triazine derivative represented by the following chemical formula, and can be used alone or in combination. Since such a 1,3,5-triazine derivative has a structure close to a planar structure, it is considered that gas barrier properties are exhibited by including the 1,3,5-triazine derivative in the organic gas barrier layer.
- the 1,3,5-triazine derivative is preferably triazine trithiol (thiocyanuric acid) in which all of R 1 , R 2 and R 3 are H.
- the organic gas barrier layer is preferably mainly composed of 1,3,5-triazine derivative, and specifically, preferably contains 50% by mass or more of 1,3,5-triazine derivative. More preferably, it is 70% by mass or more, and further preferably 100% by mass. That is, the organic gas barrier layer is made of a 1,3,5-triazine derivative.
- the organic gas barrier layer contains more 1,3,5-triazine derivatives having a structure close to a planar structure as the organic polymer compound having a structure far from the planar structure that may hinder gas barrier properties is reduced. Therefore, the surface of the organic thin film layer can be laminated so that the ring portion contained in the organic polymer compound becomes more planar, and the excellent gas barrier properties of the 1,3,5-triazine derivative are sufficiently obtained. It is thought that it can be expressed.
- the film thickness of the organic gas barrier layer is preferably 100 nm or more, and more preferably 150 nm or more. Moreover, it is preferable that the film thickness of an organic gas barrier layer is 200 nm or less.
- the oxygen permeability is preferably 200 ml / m 2 dMPa or less, more preferably 150 ml / m 2 dMPa or less, and further preferably 100 ml / m 2 dMPa or less.
- a vapor deposition method instead of using an organic polymer resin as a binder resin.
- the organic polymer compound that may impair the gas barrier property can be reduced, so that the excellent gas barrier property of the 1,3,5-triazine derivative can be sufficiently exhibited.
- a known method such as a physical vapor deposition method such as a vacuum vapor deposition method, a sputtering method or an ion plating method, a chemical vapor deposition method such as PECVD (plasma CVD), or the like is employed.
- PECVD plasma CVD
- the organic gas barrier layer is preferably formed on the plastic film by a vacuum deposition method.
- the vacuum deposition method is a method in which an organic substance is heated in a vacuum, and a material contained in a crucible is heated and evaporated to adhere onto a plastic film.
- the inside of the vapor deposition apparatus is evacuated and is preferably reduced to 3.0 ⁇ 10 ⁇ 2 Pa, more preferably to 1.0 ⁇ 10 ⁇ 2 Pa, more preferably 1.0 It is most preferable to carry out in a high vacuum of ⁇ 10 ⁇ 4 Pa or less.
- ⁇ Resistance heating high frequency induction heating, electron beam heating, etc. can be employed for heating the organic matter.
- the 1,3,5-triazine derivative When depositing the 1,3,5-triazine derivative on the surface of the polyethylene terephthalate film, it is preferably carried out at 200 to 250 ° C., more preferably 230 to 250 ° C.
- oxygen, nitrogen, hydrogen, argon, carbon dioxide gas, water vapor, or the like can be introduced as a reactive gas, or reactive vapor deposition using means such as ozone addition or ion assist can be employed.
- the thin film forming conditions can be arbitrarily changed, such as applying a bias to the plastic film or heating or cooling the plastic film.
- the gas barrier film of the present invention can be provided with various layers provided in a known gas barrier film, if necessary.
- a heat-sealable resin layer called a sealant.
- the heat-sealable resin layer is usually formed by an extrusion lamination method or a dry lamination method.
- the thermoplastic polymer for forming the heat-sealable resin layer is not particularly limited as long as the sealant adhesiveness can be sufficiently exhibited, such as polyethylene resins such as HDPE, LDPE, LLDPE, polypropylene resin, and ethylene-vinyl acetate copolymer. , Ethylene- ⁇ -olefin random copolymers, ionomer resins, and the like can be used.
- the laminated film of the present invention at least one layer of a printed layer or other plastic substrate and / or paper substrate is laminated between the plastic film and the organic gas barrier layer or outside the organic gas barrier layer. Also good.
- the printing ink for forming the printing layer may be a water-based resin-containing printing ink or a solvent-based resin-containing printing ink.
- the resin used in the printing ink include acrylic resins, urethane resins, polyester resins, vinyl chloride resins, vinyl acetate copolymer resins, and mixtures thereof.
- the printing method for providing the printing layer is not particularly limited, and a known printing method such as an offset printing method, a gravure printing method, or a screen printing method can be used.
- a known printing method such as an offset printing method, a gravure printing method, or a screen printing method
- known drying methods such as hot air drying, hot roll drying, and infrared drying can be used.
- plastic substrates and paper substrates paper, polyester resin, polyamide resin, biodegradable resin and the like are preferably used from the viewpoint of obtaining sufficient rigidity and strength of the laminate.
- stretched films such as a biaxially stretched polyester film and a biaxially stretched nylon film, are preferable.
- Oxygen permeability evaluation method For the test material, an oxygen permeability measuring device (“OX-TRAN 2/21” manufactured by MOCON Co., Ltd.) was used in accordance with the electrolytic sensor method (Method B: Isobaric method) of JIS-K7126-2. )), The oxygen permeability in a normal state was measured in an atmosphere of a temperature of 23 ° C. and a humidity of 65% RH. The oxygen permeability was measured in the direction in which oxygen permeates from the organic gas barrier layer side to the plastic film side.
- OX-TRAN 2/21 manufactured by MOCON Co., Ltd.
- FIG. 1 is a schematic view of a vapor deposition apparatus for producing the gas barrier film of the present invention, but is not limited to this apparatus.
- reference numeral 1 denotes a substrate (film), specifically, a film fed from a take-up roll.
- Reference numeral 2 denotes a roll that supports the film 1, and the film 1 travels along the rolls 3 and 3 ′. Or you may fix the sheet
- the crucible 4 is for holding the 1,3,5-triazine derivative 5, and the 1,3,5-triazine derivative vaporized by heating is deposited on the film 1.
- the apparatus of FIG. 1 was housed in a vacuum chamber (not shown) capable of producing a vacuum of 1.0 ⁇ 10 ⁇ 5 Pa.
- Example 1 First, a polyethylene terephthalate film (“Cosmo Shine (registered trademark) A4100” manufactured by Toyobo Co., Ltd., film thickness: 50 ⁇ m) is provided at a position facing the crucible 4 in the vapor deposition apparatus, and triazine trithiol (Tokyo Chemical Industry) 5 g). Next, the inside of the vapor deposition apparatus is evacuated and reduced to 5.0 ⁇ 10 ⁇ 5 Pa, and then the triazine trithiol inside the crucible 4 is heated at 80 ° C. for 60 minutes to remove moisture and impurities. Went.
- a polyethylene terephthalate film (“Cosmo Shine (registered trademark) A4100” manufactured by Toyobo Co., Ltd., film thickness: 50 ⁇ m) is provided at a position facing the crucible 4 in the vapor deposition apparatus, and triazine trithiol (Tokyo Chemical Industry) 5 g).
- triazine trithiol was heated to 250 ° C., and triazine trithiol was deposited on the surface of the polyethylene terephthalate film to obtain a gas barrier film having an organic gas barrier layer having a thickness of 200 nm on the polyethylene terephthalate film.
- Table 1 shows the physical properties and evaluation results of the obtained gas barrier film.
- Example 2 In Example 1, a gas barrier film was obtained in the same manner as in Example 1 except that the amount of triazine trithiol was adjusted and the film thickness of the organic gas barrier layer was changed to 150 nm. Table 1 shows the physical properties and evaluation results of the obtained gas barrier film.
- Example 3 In Example 1, the gas barrier film was obtained like Example 1 except having adjusted the quantity of triazine trithiol and having changed the film thickness of the organic gas barrier layer with 100 nm. Table 1 shows the physical properties and evaluation results of the obtained gas barrier film.
- Example 1 Comparative Example 1 In the same manner as in Example 1, except that the vapor deposition material was changed to 2-amino-1,3,5-triazine-4,6 diol (manufactured by Alfa Aesar) (hereinafter referred to as triazinedithiol) in Example 1. A gas barrier film was obtained. Table 1 shows the physical properties and evaluation results of the obtained gas barrier film.
- Example 2 In Example 1, a gas barrier film was obtained in the same manner as in Example 1 except that the vapor deposition raw material was triazine dithiol, the amount of triazine dithiol was adjusted, and the film thickness of the organic gas barrier layer was changed to 150 nm. Table 1 shows the physical properties and evaluation results of the obtained gas barrier film.
- Example 3 (Comparative Example 3)
- a gas barrier film was obtained in the same manner as in Example 1 except that the deposition raw material was triazine dithiol, the amount of triazine dithiol was adjusted, and the film thickness of the organic gas barrier layer was changed to 100 nm.
- Table 1 shows the physical properties and evaluation results of the obtained gas barrier film.
- Example 4 a gas barrier film was obtained in the same manner as in Example 1 except that the vapor deposition raw material was triazine dithiol, the amount of triazine dithiol was adjusted, and the film thickness of the organic gas barrier layer was changed to 50 nm. Table 1 shows the physical properties and evaluation results of the obtained gas barrier film.
- Example 5 The polyethylene terephthalate film used in Example 1 was evaluated without providing an organic gas barrier layer. Table 1 shows the physical properties and evaluation results.
- the gas barrier film according to the present invention was able to exhibit gas barrier properties even when the organic gas barrier layer was provided on the surface of the plastic film. Therefore, the gas barrier film according to the present invention can be used in the packaging field of foods, pharmaceuticals, industrial products and the like.
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Abstract
Description
本発明におけるプラスチックフィルムとは、有機高分子樹脂からなり、溶融押出し後、長手方向および/または幅方向に延伸され、さらに熱固定、冷却を施されたフィルムであり、有機高分子樹脂としては、ポリエチレン、ポリプロピレンなどのポリオレフィン;ポリエチレンテレフタレート、ポリブチレンテレフタレート、ポリエチレン-2,6-ナフタレートなどのポリエステル;ナイロン6、ナイロン4、ナイロン66、ナイロン12、全芳香族ポリアミドなどのポリアミド類;ポリ塩化ビニル、ポリ塩化ビニリデン、ポリビニルアルコール、ポリアミドイミド、ポリイミド、ポリエーテルイミド、ポリスルホン、ポリフェニレンスルフィド、ポリフェニレンオキサイドなどが挙げられる。これらの有機高分子樹脂は、他の有機単量体を少量共重合したり、他の有機重合体をブレンドしたりしてもよい。
有機ガスバリア層は、プラスチックフィルムの片面または両面に積層されている。
酸素透過度は、200ml/m2dMPa以下であることが好ましく、より好ましくは150ml/m2dMPa以下であり、さらに好ましくは100ml/m2dMPa以下である。
有機ガスバリア層のプラスチックフィルムへの積層方法としては、有機高分子樹脂をバインダー樹脂とするのではなく、蒸着方法を用いることが好ましい。蒸着方法を用いると、有機ガスバリア層において、ガスバリア性を阻害するおそれのある有機高分子化合物を低減できるため、1,3,5-トリアジン誘導体の優れたガスバリア性を十分に発現させることができる。
本発明のガスバリアフィルムには、プラスチックフィルムおよび有機ガスバリア層のほかに、必要に応じて、公知のガスバリアフィルムが備えている種々の層を設けることができる。
供試材について、JIS-K7126-2の電解センサー法(B法:等圧法)に準じて、酸素透過度測定装置(MOCON社製「OX-TRAN 2/21」)を用い、温度23℃、湿度65%RHの雰囲気下で、常態での酸素透過度を測定した。なお、酸素透過度の測定は、有機ガスバリア層側からプラスチックフィルム側に酸素が透過する方向で行った。
最初に、ポリエチレンテレフタレートフィルム(東洋紡社製「コスモシャイン(登録商標)A4100」、膜厚50μm)を蒸着装置内のるつぼ4と対向する位置に設け、るつぼ4の内部にトリアジントリチオール(東京化学工業社製)を5g充填した。次に、蒸着装置の内部を真空引きし、5.0×10-5Paまで低下させた後、るつぼ4の内部のトリアジントリチオールを80℃で60分間加熱し、水分や不純物などを取り除く処理を行った。その後、トリアジントリチオールを250℃まで加熱し、トリアジントリチオールをポリエチレンテレフタレートフィルムの表面に蒸着し、ポリエチレンテレフタレートフィルムの上に膜厚200nmの有機ガスバリア層を備えたガスバリアフィルムを得た。得られたガスバリアフィルムの物性、評価結果を表1に示す。
実施例1において、トリアジントリチオールの量を調整し、有機ガスバリア層の膜厚を150nmと変更した以外は、実施例1と同様にしてガスバリアフィルムを得た。得られたガスバリアフィルムの物性、評価結果を表1に示す。
実施例1において、トリアジントリチオールの量を調整し、有機ガスバリア層の膜厚を100nmと変更した以外は、実施例1と同様にしてガスバリアフィルムを得た。得られたガスバリアフィルムの物性、評価結果を表1に示す。
実施例1において、蒸着原料を2-アミノ-1,3,5-トリアジン-4,6ジオール(Alfa Aesar社製)(以下、トリアジンジチオールという)と変更した以外は、実施例1と同様にしてガスバリアフィルムを得た。得られたガスバリアフィルムの物性、評価結果を表1に示す。
実施例1において、蒸着原料をトリアジンジチオールとし、トリアジンジチオールの量を調整し、有機ガスバリア層の膜厚を150nmと変更した以外は、実施例1と同様にしてガスバリアフィルムを得た。得られたガスバリアフィルムの物性、評価結果を表1に示す。
実施例1において、蒸着原料をトリアジンジチオールとし、トリアジンジチオールの量を調整し、有機ガスバリア層の膜厚を100nmと変更した以外は、実施例1と同様にしてガスバリアフィルムを得た。得られたガスバリアフィルムの物性、評価結果を表1に示す。
実施例1において、蒸着原料をトリアジンジチオールとし、トリアジンジチオールの量を調整し、有機ガスバリア層の膜厚を50nmと変更した以外は、実施例1と同様にしてガスバリアフィルムを得た。得られたガスバリアフィルムの物性、評価結果を表1に示す。
実施例1で用いたポリエチレンテレフタレートフィルムに有機ガスバリア層を設けない状態で評価を行った。物性、評価結果を表1に示す。
2 ロール
3、3’ ロール
4 るつぼ
5 1,3,5-トリアジン誘導体
Claims (4)
- プラスチックフィルムの少なくとも一方の表面に、1,3,5-トリアジン誘導体を含む有機ガスバリア層を備えたガスバリアフィルムであって、
1,3,5-トリアジン誘導体は、2,4,6位に硫黄を含む基を置換基として有することを特徴とするガスバリアフィルム。 - 1,3,5-トリアジン誘導体は、トリアジントリチオールである請求項1に記載のガスバリアフィルム。
- 有機ガスバリア層の膜厚は、100nm以上である請求項1または2に記載のガスバリアフィルム。
- 有機ガスバリア層は、真空蒸着法によってプラスチックフィルムの上に形成されている請求項1~3のいずれか1項に記載のガスバリアフィルム。
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US14/764,266 US9657388B2 (en) | 2013-02-06 | 2014-02-05 | Gas barrier film |
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US10604632B2 (en) | 2017-04-07 | 2020-03-31 | The Procter & Gamble Company | Water-soluble films |
CN110719968A (zh) | 2017-06-22 | 2020-01-21 | 宝洁公司 | 包括水溶性层和气相沉积无机涂层的膜 |
WO2018237212A1 (en) | 2017-06-22 | 2018-12-27 | The Procter & Gamble Company | FILMS COMPRISING A WATER-SOLUBLE LAYER AND AN ORGANIC COATING DEPOSITED IN STEAM PHASE |
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KR20150114989A (ko) | 2015-10-13 |
CN104968494A (zh) | 2015-10-07 |
JP6056521B2 (ja) | 2017-01-11 |
US9657388B2 (en) | 2017-05-23 |
KR102166738B1 (ko) | 2020-10-16 |
CN104968494B (zh) | 2018-01-02 |
US20150376769A1 (en) | 2015-12-31 |
EP2955022A1 (en) | 2015-12-16 |
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