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公开(公告)号：EP4194203A1
公开(公告)日：2023-06-14
申请号：EP21852164.9
申请日：2021-07-29
申请人： TOYOBO CO., LTD.
摘要： An object is to provide a laminated film that is a film permitting formation of a laminate constitution constituted almost completely of a single type of resin having little environmental impact made up primarily of polypropylene film, and that has adhesive properties and gas barrier properties sought for packaging materials and moreover has properties as required to be suitable for undergoing processing and so forth. Means for solving it relates to a laminated film which is a laminated film that comprises a coating layer comprising an inorganic lamellar compound and a polyvinyl-alcohol-based copolymer on at least one face of a substrate film, the laminated film being characterized in that it satisfies conditions (a) through (d), below; (a) the substrate film is a stretched film employing propylenic resin; (b) the coating layer is attached thereto in an amount that is not less than 0.10 g/m 2 but not greater than 0.50 g/m 2 ; (c) a total reflection infrared absorption spectrum of the laminated film is such that a ratio (P1/P2) of a peak intensity (P1) at which there is maximum absorption in a 1040 cm -1 ± 10 cm -1 domain and a peak intensity (P2) at which there is maximum absorption in a 3300 cm -1 ± 10 cm -1 domain is within a range that is 3.0 to 25.0; and (d) arithmetic mean roughness in a 2-µm square of the coating layer at the laminated film is within a range that is 2.0 nm to 8.0 nm.
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公开(公告)号：EP4458579A1
公开(公告)日：2024-11-06
申请号：EP22915818.3
申请日：2022-12-20
申请人： Toyobo Co., Ltd.
摘要： Provided is a packaging material formed with resins of types that have low environmental loads, and having necessary performances such as gas barrier properties, heat sealability, and processability required for packaging materials. A packaging material having at least one base film including a polyolefin-based resin as a main component and a heat sealable resin layer, wherein at least one of the base film delaminated from the packaging material has a heating elongation rate at 130°C, measured with a thermomechanical analyzer, of 6% or less both in the MD and TD direction, and the packaging material has an oxygen permeability of 60 ml/m 2 ·d·MPa or less in an environment of 23°C and 65% RH.
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公开(公告)号：EP4328024A1
公开(公告)日：2024-02-28
申请号：EP22791427.2
申请日：2022-03-16
申请人： TOYOBO CO., LTD.
摘要： It is an object of the present invention to provide a laminated film which can form a laminated structure mainly composed of a polypropylene film and composed of substantially a single resin species having a low environmental load, and has required performances such as gas barrier properties and adhesiveness required for a packaging material, and processing suitability. A laminated film includes: a substrate film; and a coating layer including a polyvinyl alcohol-based copolymer and an inorganic lamellar compound on at least one surface of the substrate film. The laminated film satisfies the following requirements (a) to (d): (a) the substrate film is a stretched film containing a propylene-based resin; (b) an attached amount of the coating layer is 0.10 g/m 2 or more and 0.50 g/m 2 or less; (c) in a total reflection infrared absorption spectrum of the laminated film, a ratio (P1/P2) of a peak intensity (P1) having an absorption maximum in a domain of 1040 ± 10 cm -1 to a peak intensity (P2) having an absorption maximum in a domain of 3300 ± 10 cm -1 is within a range of 3.0 to 25.0; and (d) a Martens hardness of a coating layer-side surface of the laminated film measured with a test force of 0.1 mN is 248 N/mm 2 or less.
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公开(公告)号：EP4265415A1
公开(公告)日：2023-10-25
申请号：EP21906628.9
申请日：2021-12-14
申请人： TOYOBO CO., LTD.
摘要： PROBLEM: Stated as an exemplary problem is the provision of a laminated film that is a film permitting formation of a laminate constitution constituted almost completely of a single type of resin having little environmental impact made up primarily of polypropylene film, and that has adhesive properties and gas barrier properties sought for packaging materials and moreover has properties as required to be suitable for undergoing processing and so forth. SOLUTION MEANS: A laminated film which is a laminated film that comprises a coating layer having an inorganic lamellar compound and a polyvinyl-alcohol-based copolymer on at least one face of a substrate film, the laminated film being characterized in that it satisfies conditions (a) through (d), below. (a) The substrate film is a stretched film employing propylenic resin. (b) The coating layer is attached thereto in an amount that is not less than 0.10 g/m 2 but not greater than 0.50 g/m 2 . (c) A total reflection infrared absorption spectrum of the laminated film is such that a ratio (P1/P2) of a peak intensity (P1) at which there is maximum absorption in a 1040 cm -1 ± 10 cm -1 domain and a peak intensity (P2) at which there is maximum absorption in a 3300 cm -1 ± 10 cm -1 domain is within a range that is 3.0 to 25.0. (d) Thermal shrinkage of the laminated film when heated to 150° C × 5 minutes is not greater than 10% in each the MD direction and the TD direction.
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公开(公告)号：EP4410547A1
公开(公告)日：2024-08-07
申请号：EP22875970.0
申请日：2022-09-21
申请人： Toyobo Co., Ltd.
摘要： The objective is to provide a laminated film that is a film based on a polypropylene film, capable of forming a laminate structure configured by almost a single kind of resin that imposes little load on the environment, the laminated film having performances necessary for packaging materials such as gas barrier properties, adhesiveness, and processing suitability. Provided is a laminated film having a base layer (A) mainly composed of polypropylene-based resin, a surface layer (B) on one surface of the base layer (A), and a surface layer (C) on the other surface, and an inorganic thin film layer further laminated on the surface layer (B) and an organic resin layer (E) in this order, and satisfying the following (a) to (d): (a) a deposition amount of the organic resin layer (E) is 0.10 g/m2 or larger and 0.50 g/m2 or smaller; (b) a Martens hardness when a surface on the organic resin layer side of the laminated film is measured with a test force of 0.1 mN is 248 N/mm2 or less; (c) a haze of the laminated film is 6% or less; and (d) an oxygen permeability of the laminated film in an environment of 23°C and 65% RH is 10 mL/ m2·d·MPa or less.
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公开(公告)号：EP3978235A1
公开(公告)日：2022-04-06
申请号：EP20813821.4
申请日：2020-05-26
申请人： TOYOBO CO., LTD.
发明人： ISEKI, Kiyoshi , IWATA, Daisuke
摘要： An object of the present invention is to provide a transparent barrier film that has excellent acid resistance and is inexpensive, and a method for producing the same. A transparent gas barrier film includes a plastic film and an aluminum oxide layer provided on at least one surface of the plastic film, the aluminum oxide layer mainly composed of aluminum oxide. The absorption coefficient of the inorganic oxide layer immediately after vapor-deposition is less than 0.03 nm -1 , and the film thickness of the inorganic oxide layer is 6 nm or more and 10 nm or less.
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