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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：EP4393698A1
公开(公告)日：2024-07-03
申请号：EP22861241.2
申请日：2022-08-18
申请人： Toyobo Co., Ltd.
摘要： [Problem] A laminated film which has a coating layer and inorganic thin-film layer on one surface of a base material film, and which is characterized by satisfying the requirements (a) to (d) described below.
(a) The base material film contains a polyester resin that has been chemically recycled from PET bottles.
(b) The surface hardness of the laminated film on the inorganic thin-film layer surface is 120 N/mm2 or less.
(c) The coefficient of static friction µs and the coefficient of dynamic friction µd of the inorganic thin-film layer surface/opposite-side surface of the laminated film are both within the range of 0.20 to 0.40.
(d) The arithmetic mean roughness Ra across a 2 um square on the laminated film is within the range of 2.0 to 6.0 nm.-
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：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：EP4400308A1
公开(公告)日：2024-07-17
申请号：EP22867239.0
申请日：2022-08-29
申请人： Toyobo Co., Ltd.
IPC分类号： B32B27/32
摘要： An object to be solved by the present invention is to provide a laminated body having a laminate composed of substantially a single type of resin whose environmental load is small and having gas barrier property, heat-sealability, and toughness required for a packaging material. The laminated body of the present invention is a laminated body in which two stretched substrate films containing a polypropylene resin as a raw material and one heat sealable layer containing a resin are laminated with via an adhesive, wherein at least one of the substrate films has a coating layer containing a polyvinyl alcohol copolymer and a layered inorganic compound or an inorganic thin layer on one side of the substrate film, the one heat sealable layer is composed of an olefin resin containing a polypropylene resin or a polyethylene resin as a main constituent component, and the laminated body satisfies the following requirements (a) to (d):
(a) the laminated body has piercing strength of 15 N or more,
(b) the laminated body has oxygen permeability of 20 ml/m2·d·MPa or less at 23 °C and 65% RH and water vapor permeability of 2.0 g/m2·d or less at 40 °C and 90 % RH,
(c) the laminated body in which the heat sealable layer is sealed at one end and another end under conditions of 160 °C and 0.2 MPa for 2 seconds has seal strength of 15 N/15mm or more, and
(d) the laminated body has a heat shrinkage rate of 1.8 % or less at 120 °C for 5 minutes.-
公开(公告)号：EP4108449A1
公开(公告)日：2022-12-28
申请号：EP21756778.3
申请日：2021-02-16
申请人： TOYOBO CO., LTD.
发明人： YAMAZAKI, Atsushi , YAMAGUCHI, Yuya
摘要： The laminated film comprising a coating layer and an inorganic thin film layer on one surface of a substrate film, wherein the laminated film satisfies the following requirements (a) to (f):
(a) the substrate film contains 50% by weight or more and 95% by weight or less of a polyester resin recycled from PET bottles;
(b) a surface hardness of an inorganic thin film layer surface of the laminated film is 120 N/mm 2 or less;
(c) the coating layer contains a resin having an oxazoline group or a carbodiimide group as a constituent component;
(d) a content rate of an isophthalic acid component relative to a total dicarboxylic acid component in a whole polyester resin constituting the substrate film is 0.5 mol% or more and 5.0 mol% or less;
(e) both a coefficient of static friction µs and a coefficient of dynamic friction µd of the inorganic thin film layer surface/an opposite surface of the laminated film are within a range of 0.20 to 0.40; and
(f) an arithmetic average roughness Ra of the laminated film in a 2-µm square range is within a range of 2.0 to 6.0 nm.-
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：EP4070954A1
公开(公告)日：2022-10-12
申请号：EP20897324.8
申请日：2020-11-25
申请人： TOYOBO CO., LTD.
摘要： The invention provides a laminated body which contains an environmentally friendly recycled material, has a lamination constitution composed of substantially a single resin type mainly composed of polyester and having a low environmental load, and has required performances such as gas barrier properties, sealability, toughness, and transparency required for a packaging material.
The laminated body formed by laminating a polyester substrate film containing 50% by weight or more of a polyester resin recycled from PET bottles and a heat sealable resin layer in this order,
wherein the substrate film is a laminated film including an inorganic thin film layer (A) and a protective layer (a) containing a urethane resin on one surface thereof, and
the heat sealable resin layer is formed of a polyester-based resin mainly composed of ethylene terephthalate, and has a piercing strength of 10 N or more and a haze of 20% or less.-
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：EP4137310A1
公开(公告)日：2023-02-22
申请号：EP21789090.4
申请日：2021-04-07
申请人： TOYOBO CO., LTD.
发明人： YAMAZAKI, Atsushi , YAMAGUCHI, Yuya
摘要： An object of the present invention is to produce an environment-responsive laminated film including an inorganic thin film layer and a protective layer in this order on a substrate film layer using a polyester resin recycled from PET bottles. The laminated film is excellent in barrier properties and adhesiveness, and excellent in recyclability allowing the laminated film and a sealant layer to be easily peeled off from a laminated body. In order to solve the problem, the present invention has the following constitution.
A laminated body obtained by laminating a sealant layer on one surface of a laminated film including an inorganic thin film layer on one surface of a substrate film and a protective layer on the inorganic thin film layer,
wherein the laminated body satisfies the following (a) to (d):
(a) the substrate film contains 10% by weight or less of a polyester resin recycled from PET bottles;
(b) the protective layer of the laminated film contains a urethane resin, and surface free energy of a surface of the protective layer is 45 to 60 mN/m;
(c) the laminated body has lamination strength of 1.5 N/15 mm or more, and lamination strength of 1.0 N/15 mm or less after being immersed in 1-methoxy-2-propanol at 40°C for 72 hours; and
(d) the laminated body has lamination strength of 1.5 N/15 mm or more after a boiling sterilization treatment at 90°C for 30 minutes.
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