WO2019188696A1 - 積層フィルム、包装材および包装体 - Google Patents
積層フィルム、包装材および包装体 Download PDFInfo
- Publication number
- WO2019188696A1 WO2019188696A1 PCT/JP2019/011813 JP2019011813W WO2019188696A1 WO 2019188696 A1 WO2019188696 A1 WO 2019188696A1 JP 2019011813 W JP2019011813 W JP 2019011813W WO 2019188696 A1 WO2019188696 A1 WO 2019188696A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- laminated film
- carboxylic acid
- unsaturated carboxylic
- ethylene
- ionomer
- Prior art date
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D65/00—Wrappers or flexible covers; Packaging materials of special type or form
- B65D65/38—Packaging materials of special type or form
- B65D65/40—Applications of laminates for particular packaging purposes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
- B32B15/082—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin comprising vinyl resins; comprising acrylic resins
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B23/00—Layered products comprising a layer of cellulosic plastic substances, i.e. substances obtained by chemical modification of cellulose, e.g. cellulose ethers, cellulose esters, viscose
- B32B23/04—Layered products comprising a layer of cellulosic plastic substances, i.e. substances obtained by chemical modification of cellulose, e.g. cellulose ethers, cellulose esters, viscose comprising such cellulosic plastic substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B23/08—Layered products comprising a layer of cellulosic plastic substances, i.e. substances obtained by chemical modification of cellulose, e.g. cellulose ethers, cellulose esters, viscose comprising such cellulosic plastic substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/065—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of foam
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
- B32B27/308—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising acrylic (co)polymers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/34—Layered products comprising a layer of synthetic resin comprising polyamides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/18—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by features of a layer of foamed material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2250/00—Layers arrangement
- B32B2250/02—2 layers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2250/00—Layers arrangement
- B32B2250/24—All layers being polymeric
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/30—Properties of the layers or laminate having particular thermal properties
- B32B2307/31—Heat sealable
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/582—Tearability
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/732—Dimensional properties
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2439/00—Containers; Receptacles
- B32B2439/40—Closed containers
- B32B2439/46—Bags
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2439/00—Containers; Receptacles
- B32B2439/70—Food packaging
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2439/00—Containers; Receptacles
- B32B2439/80—Medical packaging
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2553/00—Packaging equipment or accessories not otherwise provided for
Definitions
- the present invention relates to a laminated film, a packaging material, and a package.
- a laminated film for packaging a laminated film in which an ionomer resin layer composed of an ionomer resin is bonded to a base film is known.
- Patent Document 1 Japanese Patent Laid-Open No. 2000-202956
- Patent Document 2 Japanese Patent Laid-Open No. 2002-210895
- Patent Document 1 discloses an ethylene / ⁇ -olefin copolymer (B) having a density of 870 to 940 kg / m 3 which may contain an ethylene / unsaturated carboxylic acid copolymer ionomer (A) and up to 50% by weight of polyethylene.
- a co-extruded film having a transverse tearing strength in the range of 50 to 300 N / cm and an easily tearable laminated film that does not substantially exhibit longitudinal tearability is described.
- Patent Document 2 includes a first layer made of linear low density polyethylene (A), a second layer made of ionomer resin (B), and a third layer made of linear low density polyethylene resin (A).
- the linear low-density polyethylene (A) forming the first layer and the third layer is an ethylene ⁇ ⁇ -- prepared using a metallocene olefin polymerization catalyst. It is an olefin copolymer, the density (d; ASTM D1505) is 0.905 to 0.950 g / cm 3 , and the melt flow rate (MFR; ASTM D1238, 190 ° C., load 2.16 kg) is 0.
- An easy tearable composite film characterized by a 5 to 4.0 g / 10 min is described.
- the laminated film including the base film and the ionomer resin layer as described in Patent Documents 1 and 2 is torn in one or both of the MD direction and the TD direction. It became clear that it might be inferior.
- the present invention has been made in view of the above circumstances, and provides a laminated film excellent in tearability.
- the inventors of the present invention have made extensive studies in order to achieve the above problems. As a result, it was found that by forming an ionomer resin layer having a metal ion content in a specific range on the base material layer, a laminated film having excellent tearability in both the MD direction and the TD direction can be obtained.
- the present invention has been completed.
- the following laminated film, packaging material and package are provided.
- the laminated film in which the base material layer (A) includes a metal foil.
- a laminated film in which the heat-sealable layer (C) contains a polyolefin In the laminated film according to the above [10], A laminated film in which the heat-sealable layer (C) contains a polyolefin.
- a packaging material comprising at least a layer composed of the laminated film according to any one of [1] to [11].
- a package comprising the packaging material according to the above [12] and an article packaged by the packaging material.
- a laminated film having excellent tearability can be provided.
- the laminated film 10 according to the present embodiment is provided with a base layer (A) and an ionomer (B1) of an ethylene / unsaturated carboxylic acid copolymer provided on one surface of the base layer (A). And an ionomer resin layer (B) containing at least an ethylene / unsaturated carboxylic acid copolymer (B2) constituting the ionomer (B1) of the ethylene / unsaturated carboxylic acid copolymer.
- the metal ion content represented by is more than 5.0 and 20.0 or less.
- the laminated film including the base film and the ionomer resin layer as described in Patent Documents 1 and 2 is either in the MD direction or the TD direction. It has been found that one or both may be inferior in tearability.
- the inventors of the present invention have made extensive studies in order to achieve the above problems.
- an ionomer resin containing an ionomer (B1) of an ethylene / unsaturated carboxylic acid copolymer in which the metal ion content represented by X ⁇ Y / 100 is in the range of more than 5.0 to 20.0 or less.
- the laminated film 10 according to the present embodiment can have good tearability by adopting the above layer configuration.
- the tear strength in the MD direction and the TD direction of the ionomer resin layer (B) measured in accordance with JIS K7128 (1998) is 5.0 N or less, respectively.
- the MD direction is more preferably 4.0 N or less, and still more preferably less than 3.5 N.
- the TD direction is more preferably 4.5 N or less.
- the lower limit is not particularly limited, but is preferably 0.1 N or more in both the MD direction and the TD direction. Thereby, the tearability of the laminated film 10 according to the present embodiment can be further improved.
- the base material layer (A) is a layer provided for the purpose of improving the handling properties, mechanical properties, electrical conductivity, heat insulating properties, heat resistance, barrier properties and the like of the laminated film 10.
- Examples of the base material layer (A) include metal foil (copper foil, aluminum foil, etc.), polyamide film, polypropylene film, polyester film, polyimide film, polyvinylidene chloride film, ethylene / vinyl acetate copolymer film, aluminum vapor deposition.
- a film, paper, a cellophane, etc. are mentioned. These may be used individually by 1 type and may be used in combination of 2 or more type. These may be uniaxially or biaxially stretched.
- the substrate layer (A) may be a single layer or a laminate of two or more layers.
- the base material layer (A) preferably includes a metal foil from the viewpoint of improving the barrier property of the laminated film 10.
- the metal foil include aluminum foil and copper foil.
- the thickness of the base material layer (A) is preferably 1 ⁇ m or more and 200 ⁇ m or less, more preferably 3 ⁇ m or more and 100 ⁇ m or less, and even more preferably 5 ⁇ m or more and 80 ⁇ m or less from the viewpoint of obtaining good film properties.
- the base material layer (A) may be subjected to a surface treatment in order to improve adhesiveness with other layers. Specifically, corona treatment, plasma treatment, anchor coat treatment, primer coat treatment, or the like may be performed.
- the ionomer resin layer (B) is formed of a resin composition containing an ionomer (B1) of an ethylene / unsaturated carboxylic acid copolymer.
- the content of the ionomer (B1) of the ethylene / unsaturated carboxylic acid copolymer in the ionomer resin layer (B) is the tearability of the laminated film 10 when the total amount of the ionomer resin layer (B) is 100% by mass. From the viewpoint of further improving the ratio, it is preferably 70% by mass or more, more preferably 80% by mass or more, further preferably 90% by mass or more, and particularly preferably 95% by mass or more.
- the upper limit of the content of the ionomer (B1) of the ethylene / unsaturated carboxylic acid copolymer is not particularly limited, but is, for example, 100% by mass or less.
- the metal ion content represented by X ⁇ Y / 100 is more than 5.0 and 20.0 or less, but the tearability is further improved.
- the metal ion content represented by X ⁇ Y / 100 is more than 5.0 and 20.0 or less, but the tearability is further improved.
- the ionomer resin layer (B) preferably 18.0 or less, more preferably 15.0 or less, and even more preferably 12.0.
- it is particularly preferably 10.0 or less.
- the thickness of the ionomer resin layer (B) is, for example, from 1 ⁇ m to 100 ⁇ m, preferably from 3 ⁇ m to 80 ⁇ m, and more preferably from 5 ⁇ m to 40 ⁇ m. From the viewpoint of improving the extrusion coating property of the ionomer resin layer (B), the thickness of the ionomer resin layer (B) is preferably 5 ⁇ m or more, and more preferably 10 ⁇ m or more. From the viewpoint of further improving the tearability of the laminated film 10, the thickness of the ionomer resin layer (B) is preferably 40 ⁇ m or less, more preferably 30 ⁇ m or less, and even more preferably 25 ⁇ m or less. .
- the ethylene / unsaturated carboxylic acid copolymer (B2) which is the base resin of the ionomer (B1) of the ethylene / unsaturated carboxylic acid copolymer, contains at least a monomer selected from ethylene and an unsaturated carboxylic acid. It is a polymer copolymerized as a copolymerization component, and monomers other than ethylene and unsaturated carboxylic acid type may be copolymerized if necessary.
- the copolymer may be any of a block copolymer, a random copolymer, and a graft copolymer, but in consideration of productivity, a binary random copolymer, a ternary random copolymer, a binary It is preferable to use a graft copolymer of a random copolymer or a graft copolymer of a ternary random copolymer, more preferably a binary random copolymer or a ternary random copolymer.
- the ethylene / unsaturated carboxylic acid copolymer (B2) includes an ethylene / unsaturated carboxylic acid binary copolymer and an ethylene / unsaturated carboxylic acid alkyl ester / unsaturated carboxylic acid terpolymer. It is preferable that at least one selected.
- unsaturated carboxylic acid examples include acrylic acid, methacrylic acid, ethacrylic acid, itaconic acid, itaconic anhydride, fumaric acid, crotonic acid, maleic acid, maleic anhydride, maleic acid monoester (monomethyl maleate, monoethyl maleate) Etc.), and unsaturated carboxylic acids or half esters having 4 to 8 carbon atoms such as maleic anhydride monoester (monomethyl maleic anhydride, monoethyl maleic anhydride, etc.).
- the unsaturated carboxylic acid preferably contains at least one selected from acrylic acid and methacrylic acid from the viewpoint of productivity of the ethylene / unsaturated carboxylic acid copolymer (B2).
- These unsaturated carboxylic acids may be used individually by 1 type, and may be used in combination of 2 or more type.
- the ethylene / unsaturated carboxylic acid copolymer (B2) is a copolymer obtained by copolymerizing at least ethylene and an unsaturated carboxylic acid, and further a ternary or higher multicomponent copolymer obtained by copolymerizing a third copolymer component. It may be a polymer.
- unsaturated carboxylic acid ester for example, methyl acrylate, ethyl acrylate, acrylic acid
- (Meth) acrylic acid alkyl esters such as isobutyl, n-butyl acrylate, isooctyl acrylate, methyl methacrylate, ethyl methacrylate, isobutyl methacrylate, dimethyl maleate and diethyl maleate
- vinyl esters for example, vinyl acetate, Vinyl propionate, etc.
- unsaturated hydrocarbons eg, propylene, butene, 1,3-butadiene, pentene, 1,3-pentadiene, 1-hexene, etc.
- oxides such as vinyl sulfate and vinyl nitrate, halogen compounds
- an unsaturated carboxylic acid ester is preferable, and a (meth) acrylic acid alkyl ester (a preferable carbon number of the alkyl moiety is 1 to 4) is more preferable.
- the content ratio of the structural unit derived from the third copolymer component in the ethylene / (meth) acrylic acid copolymer is preferably in the range of 25% by mass or less. It is preferable at the point of production and mixing that the content rate of the structural unit derived from a 3rd copolymerization component is below the said upper limit.
- the content of the structural unit derived from ethylene is 100 for all the structural units of the ethylene / unsaturated carboxylic acid copolymer (B2).
- mass% it is preferably 65 mass% or more and 95 mass% or less, more preferably 75 mass% or more and 93 mass% or less, and further preferably 80 mass% or more and 92 mass% or less.
- the content of the structural unit derived from the unsaturated carboxylic acid is ethylene / unsaturated.
- the total structural unit of the carboxylic acid copolymer (B2) is 100% by mass, it is preferably 5% by mass to 35% by mass, more preferably 7% by mass to 25% by mass, and still more preferably 8% by mass. It is 20 mass% or less.
- the content (X) of the unsaturated carboxylic acid in the ethylene / unsaturated carboxylic acid copolymer (B2) can be measured by, for example, Fourier transform infrared absorption spectroscopy (FT-IR). .
- metal ions constituting the ionomer (B1) of the ethylene / unsaturated carboxylic acid copolymer according to the present embodiment include alkali metal ions such as lithium ions, potassium ions, and sodium ions; calcium ions, magnesium ions, and zinc ions. And polyvalent metal ions such as aluminum ions and barium ions. These metal ions may be used individually by 1 type, and may be used in combination of 2 or more type. Among these, it is preferable to include at least one selected from sodium ions, zinc ions, and magnesium ions.
- the degree of neutralization of the ionomer (B1) of the ethylene / unsaturated carboxylic acid copolymer according to the present embodiment is not particularly limited, but is preferably 95 mol% or less from the viewpoint of further improving the workability and moldability.
- the mol% or less is more preferable, 85 mol% or less is more preferable, and 80 mol% or less is particularly preferable.
- the degree of neutralization of the ionomer (B1) of the ethylene / unsaturated carboxylic acid copolymer according to this embodiment is not particularly limited, but from the viewpoint of further improving the tearability, heat resistance, and workability of the laminated film 10.
- the degree of neutralization of the ionomer (B1) of the ethylene / unsaturated carboxylic acid copolymer can be measured, for example, by an incineration residue analysis method.
- the production method of the ionomer (B1) of the ethylene / unsaturated carboxylic acid copolymer is not particularly limited, and can be produced by a known method. Moreover, what is marketed may be used for the ionomer (B1) of an ethylene / unsaturated carboxylic acid copolymer.
- the melt flow rate (MFR) of the ionomer (B1) of the ethylene / unsaturated carboxylic acid copolymer, measured under conditions of 190 ° C. and 2160 g load, in accordance with JIS K7210: 1999 is 0. It is preferably 1 g / 10 min or more and 30 g / 10 min or less, more preferably 0.3 g / 10 min or more and 15 g / 10 min or less, and 0.5 g / 10 min or more and 10 g / 10 min or less. It is particularly preferred.
- components other than the ionomer (B1) of the ethylene / unsaturated carboxylic acid copolymer can be contained within a range not impairing the object of the present invention.
- Other components are not particularly limited.
- plasticizers, antioxidants, ultraviolet absorbers, antistatic agents, surfactants, colorants, light stabilizers, foaming agents, lubricants, crystal nucleating agents, crystallization agents are not particularly limited.
- FIG. 2 is a cross-sectional view schematically showing an example of the structure of the laminated film 10 according to the embodiment of the present invention.
- the laminated film 10 according to the present embodiment may further include a heat sealable layer (C) in order to impart heat sealability.
- the heat-sealable layer (C) is preferably provided on the surface of the ionomer resin layer (B) opposite to the surface on which the base material layer (A) is provided.
- the heat sealable layer (C) is a layer for imparting heat sealability to the laminated film 10 according to this embodiment, and includes, for example, a thermoplastic resin (C1).
- the thickness of the heat-sealable layer (C) is, for example, 1 ⁇ m or more and 300 ⁇ m or less, preferably 5 ⁇ m or more and 200 ⁇ m or less, more preferably 10 ⁇ m or more and 150 ⁇ m or less.
- thermoplastic resin (C1) examples include polyethylene such as high-density polyethylene, high-pressure method low-density polyethylene, low-density polyethylene (LDPE), and linear low-density polyethylene (LLDPE), and ethylene / unsaturated carboxylic acid.
- polyethylene such as high-density polyethylene, high-pressure method low-density polyethylene, low-density polyethylene (LDPE), and linear low-density polyethylene (LLDPE), and ethylene / unsaturated carboxylic acid.
- Acid copolymer ethylene / vinyl acetate copolymer (EVA), ethylene / ⁇ -olefin copolymer elastomer, polypropylene, propylene copolymer (copolymer of propylene and ⁇ -olefin other than propylene), Polybutene, other olefinic (co) polymers, and polyolefins such as polymer blends can be exemplified.
- the ⁇ -olefin include propylene, 1-butene, 1-pentene, 1-hexene, 1-octene, 1-decene, 1-dodecene, 4-methyl-1-pentene and the like.
- the thermoplastic resin (C1) preferably contains a polyolefin from the viewpoint of excellent heat sealability, and includes low density polyethylene (LDPE), linear low density polyethylene (LLDPE), ethylene / ⁇ -olefin copolymer. More preferably, it contains at least one selected from the group consisting of a combined elastomer, polypropylene, and a propylene-based copolymer (a copolymer of propylene and an ⁇ -olefin other than propylene).
- LDPE low density polyethylene
- LLDPE linear low density polyethylene
- ethylene / ⁇ -olefin copolymer More preferably, it contains at least one selected from the group consisting of a combined elastomer, polypropylene, and a propylene-based copolymer (a copolymer of propylene and an ⁇ -olefin other than propylene).
- the content of the thermoplastic resin (C1) in the heat-sealable layer (C) according to this embodiment is preferably 50% by mass or more and 100% by mass when the entire heat-sealable layer (C) is 100% by mass. % Or less, more preferably 70% by mass or more and 100% by mass or less, further preferably 90% by mass or more and 100% by mass or less, and particularly preferably 95% by mass or more and 100% by mass or less. Thereby, balance, such as adhesiveness with an ionomer resin layer (B), heat seal property, can be made more favorable.
- the heat-sealable layer (C) according to the present embodiment can contain components other than the thermoplastic resin (C1) within a range that does not impair the object of the present invention.
- Other components are not particularly limited.
- thermoplastic resin other than thermoplastic resin (C1) thermosetting resin, inorganic filler, organic filler, impact resistance improver, slip agent, crosslinking agent, Cross-linking aid, tackifier, silane coupling agent, processing aid, mold release agent, hydrolysis inhibitor, heat stabilizer, anti-blocking agent, anti-fogging agent, flame retardant, flame retardant aid, light diffusing agent, Antibacterial agents, antifungal agents, dispersants and other resins can be mentioned.
- Other components may be used individually by 1 type, and may be used in combination of 2 or more type.
- the laminated film 10 according to the present embodiment may be composed of only two layers of a base material layer (A) and an ionomer resin layer (B), or a base material layer (A), an ionomer resin layer (B), and From the viewpoint of providing the laminated film 10 with various functions, a layer other than the above three layers (hereinafter also referred to as other layers) may be configured by only three layers of the heat-sealable layer (C). You may have. Examples of other layers include a firing layer, a metal layer, an inorganic layer, a gas barrier layer, a hard coat layer, an adhesive layer, an antireflection layer, an antifouling layer, and an anchor coat layer. Other layers may be used alone or in combination of two or more layers.
- the laminated film 10 according to the present embodiment can be suitably used as a packaging material used for packaging foods, pharmaceuticals, industrial products, daily necessities, cosmetics, and the like, and particularly preferably used as a food packaging material. it can.
- the manufacturing method of the laminated film 10 which concerns on this embodiment is extrusion coating the resin composition containing the ionomer (B1) of an ethylene and unsaturated carboxylic acid type copolymer on a base material layer (A).
- the extrusion process of forming an ionomer resin layer (B) on a base material layer (A) it is preferable that the ionomer resin layer (B) of the laminated film 10 according to the present embodiment is an extrusion coating processed layer formed by an extrusion coating method.
- the resin temperature at the time of molding can be increased as compared with other film forming methods and the like, and an ionomer (B1) of an ethylene / unsaturated carboxylic acid copolymer is formed on the base material layer (A). ) Can be coated in a molten state. That is, according to the manufacturing method of the laminated film 10 which concerns on this embodiment, an ionomer resin layer (B) can be accurately and stably formed on a base material layer (A).
- the molding apparatus and molding conditions in the extrusion process are not particularly limited, and conventionally known molding apparatuses and molding conditions can be employed.
- As the molding apparatus a T-die extruder or the like can be used.
- molding conditions molding conditions of a known extrusion coating method can be employed.
- the extrusion coating temperature in the extrusion step is not particularly limited because it is appropriately set depending on the type and blending of the ionomer (B1) of the ethylene / unsaturated carboxylic acid copolymer. From the viewpoint of improving the film forming property, it is preferably 200 ° C. or higher, more preferably 250 ° C. or higher, and particularly preferably 280 ° C. or higher.
- the upper limit of the extrusion coating temperature in an extrusion process is not specifically limited, For example, it is 350 degrees C or less.
- Packaging material The packaging material which concerns on this embodiment is provided with the layer comprised by the laminated film 10 which concerns on this embodiment at least. Moreover, the packaging material which concerns on this embodiment may use the laminated
- shape of the packaging material which concerns on this embodiment is not specifically limited, For example, shapes, such as a sheet form, a film form, and a bag shape, are mentioned.
- the form of the bag is not particularly limited, and examples thereof include a three-sided bag, a four-sided bag, a pillow bag, a gusset bag, and a stick bag.
- the packaging material according to the present embodiment can be suitably used as a packaging material used for packaging foods, pharmaceuticals, industrial products, daily necessities, cosmetics, and the like, and can be particularly suitably used as a food packaging material. .
- the packaging body which concerns on this embodiment is provided with the packaging material which concerns on this embodiment, and the article packaged with the said packaging material.
- goods, foodstuffs, a pharmaceutical, industrial goods, daily necessities etc. are mentioned, for example.
- Base material layer 1 PET / LDPE / AL (polyethylene terephthalate film (thickness: 12 ⁇ m) coated with an anchor coating agent) and low density polyethylene film (MFR: 7.2 g / 10 min, density 917 kg / m 3 , thickness: 15 ⁇ m) And AL foil (thickness: 7 ⁇ m) laminated film)
- ⁇ Resin layer (B)> (Ionomer of ethylene / unsaturated carboxylic acid copolymer (B1))
- IO-1 Ionomer of ethylene / methacrylic acid copolymer (ethylene content: 90% by mass, methacrylic acid content: 10% by mass, metal ion: zinc, degree of neutralization: 60 mol%, MFR: 1.8 g / 10 minutes)
- IO-2 Ionomer of ethylene / methacrylic acid copolymer (ethylene content: 90% by mass, methacrylic acid content: 10% by mass, metal ion: zinc, degree of neutralization: 73 mol%, MFR: 1.0 g / 10 minutes)
- IO-3 Ionomer of ethylene / methacrylic acid copolymer (ethylene content: 85 mass%, methacrylic acid content: 15 mass%, metal ion: zinc, degree of neutralization: 59 mol%, MFR: 0.9 g / 10 minutes)
- LDPE1 low density polyethylene, MFR: 7.2 g / 10 min, density 917 kg / m 3
- LLDPE1 Linear low density polyethylene film, manufactured by Mitsui Chemicals, Inc., product name: TUX-TCS
- LLDPE2 Linear low density polyethylene film, manufactured by Mitsui Chemicals, Inc., product name: TUX-HC
- LLDPE3 Linear low density polyethylene film, manufactured by Mitsui Chemicals, Inc., product name: TUX-MCS
- LLDPE4 Linear low density polyethylene film, manufactured by Mitsui Chemicals, Inc., product name: TUX-VCS
- LLDPE5 Linear low density polyethylene film, manufactured by Tamapoly, product name: LC-2, easy tearing imparting type
- Extrusion coating temperature (temperature under the die): 300 ° C.
- extrusion coating speed 80 m / min
- air gap 110 mm
- the following evaluation was performed about the obtained laminated
- the obtained results are shown in Table 1, respectively.
- the laminated films of Examples 1 to 8 were excellent in tearability in both the MD direction and the TD direction. In contrast, the laminated films of Comparative Examples 1 to 4 and Reference Example 1 were inferior in tearability in the TD direction.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Laminated Bodies (AREA)
- Wrappers (AREA)
Abstract
Description
基材層(A)と、
上記基材層(A)の一方の面に設けられ、かつ、エチレン・不飽和カルボン酸系共重合体のアイオノマー(B1)を含むアイオノマー樹脂層(B)と、
を少なくとも備える積層フィルムであって、
上記エチレン・不飽和カルボン酸系共重合体のアイオノマー(B1)を構成するエチレン・不飽和カルボン酸系共重合体(B2)中の不飽和カルボン酸の含有量をX[質量%]とし、
上記エチレン・不飽和カルボン酸系共重合体のアイオノマー(B1)の中和度をY[モル%]としたとき、
X×Y/100で表される金属イオン含有量が5.0を超えて20.0以下である積層フィルム。
[2]
上記[1]に記載の積層フィルムにおいて、
JIS K7128(1998)に準拠して測定される、上記アイオノマー樹脂層(B)のMD方向およびTD方向における当該積層フィルムの引裂強度がそれぞれ5.0N以下である積層フィルム。
[3]
上記[1]または[2]に記載の積層フィルムにおいて、
JIS K7210:1999に準拠し、190℃、2160g荷重の条件で測定される、上記エチレン・不飽和カルボン酸系共重合体のアイオノマー(B1)のメルトフローレート(MFR)が0.1g/10分以上30g/10分以下である積層フィルム。
[4]
上記[1]乃至[3]のいずれか一つに記載の積層フィルムにおいて、
上記アイオノマー樹脂層(B)の厚みが5μm以上である積層フィルム。
[5]
上記[1]乃至[4]のいずれか一つに記載の積層フィルムにおいて、
上記アイオノマー樹脂層(B)が押出コーティング加工層である積層フィルム。
[6]
上記[1]乃至[5]のいずれか一つに記載の積層フィルムにおいて、
上記エチレン・不飽和カルボン酸系共重合体(B2)を構成する不飽和カルボン酸が、アクリル酸およびメタクリル酸から選ばれる少なくとも一種を含む積層フィルム。
[7]
上記[1]乃至[6]のいずれか一つに記載の積層フィルムにおいて、
上記エチレン・不飽和カルボン酸系共重合体のアイオノマー(B1)を構成する金属イオンが、ナトリウムイオン、亜鉛イオンおよびマグネシウムイオンから選ばれる少なくとも一種を含む積層フィルム。
[8]
上記[1]乃至[7]のいずれか一つに記載の積層フィルムにおいて、
上記基材層(A)が金属箔、ポリオレフィンフィルム、ポリエステルフィルム、ポリアミドフィルムおよびセロハンからなる群から選択される少なくとも一種を含む積層フィルム。
[9]
上記[8]に記載の積層フィルムにおいて、
上記基材層(A)が金属箔を含む積層フィルム。
[10]
上記[1]乃至[9]のいずれか一つに記載の積層フィルムにおいて、
ヒートシール性層(C)をさらに備える積層フィルム。
[11]
上記[10]に記載の積層フィルムにおいて、
上記ヒートシール性層(C)がポリオレフィンを含む積層フィルム。
[12]
上記[1]乃至[11]のいずれか一つに記載の積層フィルムにより構成された層を少なくとも備える包装材。
[13]
上記[12]に記載の包装材と、前記包装材により包装された物品と、を備える包装体。
図1は、本発明に係る実施形態の積層フィルム10の構造の一例を模式的に示した断面図である。
本実施形態に係る積層フィルム10は、基材層(A)と、基材層(A)の一方の面に設けられ、かつ、エチレン・不飽和カルボン酸系共重合体のアイオノマー(B1)を含むアイオノマー樹脂層(B)と、を少なくとも備える積層フィルムであって、エチレン・不飽和カルボン酸系共重合体のアイオノマー(B1)を構成するエチレン・不飽和カルボン酸系共重合体(B2)中の不飽和カルボン酸の含有量をX[質量%]とし、エチレン・不飽和カルボン酸系共重合体のアイオノマー(B1)の中和度をY[モル%]としたとき、X×Y/100で表される金属イオン含有量が5.0を超えて20.0以下である。
本発明者らは、上記課題を達成するために鋭意検討を重ねた。その結果、X×Y/100で表される金属イオン含有量が5.0を超えて20.0以下の範囲にあるエチレン・不飽和カルボン酸系共重合体のアイオノマー(B1)を含むアイオノマー樹脂層(B)を基材層(A)の一方の面に形成することによって、MD方向およびTD方向のいずれの方向においても引裂き性に優れる積層フィルム10が得られることを見出した。
すなわち、本実施形態に係る積層フィルム10は、上記層構成とすることで、引裂き性を良好なものとすることができる。
基材層(A)は、積層フィルム10の取り扱い性や機械的特性、導電性、断熱性、耐熱性、バリア性等の特性をより良好にすることを目的として設けられる層である。基材層(A)としては、例えば、金属箔(銅箔、アルミニウム箔等)、ポリアミドフィルム、ポリプロピレンフィルム、ポリエステルフィルム、ポリイミドフィルム、ポリ塩化ビニリデンフィルム、エチレン・酢酸ビニル共重合体フィルム、アルミニウム蒸着フィルム、紙、セロハン等が挙げられる。これらは1種単独で用いてもよいし、2種以上を組み合わせて用いてもよい。これらは一軸あるいは二軸に延伸されたものであってもよい。
これらの中でも、機械的強度や耐ピンホール性等に優れていることから、金属箔、ポリオレフィンフィルム、ポリエステルフィルム、ポリアミドフィルムおよびセロハンからなる群から選択される少なくとも一種が好ましい。
基材層(A)は単層であってもよいし、二種以上の層を積層したものでもよい。
基材層(A)は他の層との接着性を改良するために、表面処理を行ってもよい。具体的には、コロナ処理、プラズマ処理、アンカーコート処理、プライマーコート処理等を行ってもよい。
本実施形態に係るアイオノマー樹脂層(B)は、エチレン・不飽和カルボン酸系共重合体のアイオノマー(B1)を含む樹脂組成物により形成される。
アイオノマー樹脂層(B)中のエチレン・不飽和カルボン酸系共重合体のアイオノマー(B1)の含有量は、アイオノマー樹脂層(B)の全体を100質量%としたとき、積層フィルム10の引裂き性をより一層向上させる観点から、好ましくは70質量%以上、より好ましくは80質量%以上、さらに好ましくは90質量%以上、特に好ましくは95質量%以上である。エチレン・不飽和カルボン酸系共重合体のアイオノマー(B1)の含有量の上限は特に限定されないが、例えば、100質量%以下である。
また、アイオノマー樹脂層(B)の押出コーティング性を良好にする観点からは、アイオノマー樹脂層(B)の厚さは5μm以上であることが好ましく、10μm以上であることがより好ましい。積層フィルム10の引裂き性をさらに良好にする観点からは、アイオノマー樹脂層(B)の厚さは40μm以下であることが好ましく、30μm以下であることがより好ましく、25μm以下であることがさらに好ましい。
共重合体においては、ブロック共重合体、ランダム共重合体、グラフト共重合体のいずれであってもよいが、生産性を考慮すると2元ランダム共重合体、3元ランダム共重合体、2元ランダム共重合体のグラフト共重合体あるいは3元ランダム共重合体のグラフト共重合体を使用するのが好ましく、より好ましくは2元ランダム共重合体又は3元ランダム共重合体である。
エチレン・不飽和カルボン酸系共重合体(B2)としては、エチレン・不飽和カルボン酸2元共重合体及びエチレン・不飽和カルボン酸アルキルエステル・不飽和カルボン酸3元共重合体からなる群から選択される少なくとも1種であることが好ましい。
これらの中でも、上記不飽和カルボン酸は、エチレン・不飽和カルボン酸系共重合体(B2)の生産性等の観点から、アクリル酸およびメタクリル酸から選ばれる少なくとも一種を含むことが好ましい。これらの不飽和カルボン酸は1種単独で用いてもよいし、2種以上を組み合わせて用いてもよい。
これらの中でも、第3の共重合成分としては、不飽和カルボン酸エステルが好ましく、(メタ)アクリル酸アルキルエステル(アルキル部位の好ましい炭素数は1~4)がより好ましい。
第3の共重合成分に由来の構成単位の含有比率が上記上限値以下であると、生産・混合の点で好ましい。
本実施形態に係るエチレン・不飽和カルボン酸系共重合体(B2)において、不飽和カルボン酸から導かれる構成単位の含有量(すなわち、不飽和カルボン酸の含有量X)は、エチレン・不飽和カルボン酸系共重合体(B2)の全構成単位を100質量%としたとき、好ましくは5質量%以上35質量%以下、より好ましくは7質量%以上25質量%以下、さらに好ましくは8質量%以上20質量%以下である。
ここで、エチレン・不飽和カルボン酸系共重合体(B2)中の不飽和カルボン酸の含有量(X)は、例えば、フーリエ変換赤外吸収分光法(FT-IR)により測定することができる。
これらの中でも、ナトリウムイオン、亜鉛イオンおよびマグネシウムイオンから選ばれる少なくとも一種を含むことが好ましい。
また、本実施形態に係るエチレン・不飽和カルボン酸系共重合体のアイオノマー(B1)の中和度は特に限定されないが、積層フィルム10の引裂き性や耐熱性、加工性をより向上させる観点から、5モル%以上が好ましく、10モル%以上がより好ましく、15モル%以上がさらに好ましく、20モル%以上が特に好ましい。
ここで、エチレン・不飽和カルボン酸系共重合体のアイオノマー(B1)の中和度は、例えば、焼却残渣分析法により測定することができる。
図2は、本発明に係る実施形態の積層フィルム10の構造の一例を模式的に示した断面図である。
本実施形態に係る積層フィルム10は、ヒートシール性を付与するために、ヒートシール性層(C)をさらに備えてもよい。
ヒートシール性層(C)は、図2に示すように、アイオノマー樹脂層(B)における基材層(A)が設けられた面とは反対側の面に設けられることが好ましい。
ヒートシール性層(C)は、本実施形態に係る積層フィルム10にヒートシール性を付与するための層であり、例えば、熱可塑性樹脂(C1)を含む。
ヒートシール性層(C)の厚さは、例えば1μm以上300μm以下であり、好ましくは5μm以上200μm以下、より好ましくは10μm以上150μm以下である。
これらの中でも、ヒートシール性に優れる点から、熱可塑性樹脂(C1)としてはポリオレフィンを含むことが好ましく、低密度ポリエチレン(LDPE)、線状低密度ポリエチレン(LLDPE)、エチレン・α-オレフィン共重合体エラストマー、ポリプロピレンおよびプロピレン系共重合体(プロピレンとプロピレン以外のα―オレフィンとの共重合体)からなる群から選択される少なくとも一種を含むことがより好ましい。
本実施形態に係る積層フィルム10は、基材層(A)およびアイオノマー樹脂層(B)の2層のみで構成されていてもよいし、基材層(A)、アイオノマー樹脂層(B)およびヒートシール性層(C)の3層のみで構成されていてもよいし、積層フィルム10に様々な機能を付与する観点から、上記3層以外の層(以下、その他の層とも呼ぶ。)を有していてもよい。その他の層としては、例えば、発砲層、金属層、無機物層、ガスバリア層、ハードコート層、接着層、反射防止層、防汚層、アンカーコート層等を挙げることができる。その他の層は1層単独で用いてもよいし、2層以上を組み合わせて用いてもよい。
本実施形態に係る積層フィルム10は、例えば、食品、医薬品、工業用品、日用品、化粧品等を包装するために用いられる包装材として好適に用いることができ、食品包装材として特に好適に用いることができる。
本実施形態に係る積層フィルム10の製造方法は、基材層(A)上に、エチレン・不飽和カルボン酸系共重合体のアイオノマー(B1)を含む樹脂組成物を押出コーティングすることにより、基材層(A)上にアイオノマー樹脂層(B)を形成する押出工程を含むことが好ましい。すなわち、本実施形態に係る積層フィルム10のアイオノマー樹脂層(B)は押出コーティング法によって形成された押出コーティング加工層であることが好ましい。
押出コーティング法を用いると、他の成膜法等に比べて、成形時の樹脂温度を高めることができ、基材層(A)上にエチレン・不飽和カルボン酸系共重合体のアイオノマー(B1)を含む樹脂組成物を溶融状態でコーティングすることが可能となる。
すなわち、本実施形態に係る積層フィルム10の製造方法によれば、基材層(A)上に、アイオノマー樹脂層(B)を精度よく安定的に形成することができる。
押出工程における押出コーティング温度の上限は特に限定されないが、例えば、350℃以下である。
本実施形態に係る包装材は、少なくとも、本実施形態に係る積層フィルム10により構成された層を備える。また、本実施形態に係る包装材はその一部に本実施形態に係る積層フィルム10を使用してもよいし、包装材の全体に本実施形態に係る積層フィルム10を使用してもよい。
本実施形態に係る包装材の形状は、特に限定されないが、例えば、シート状、フィルム状、袋状等の形状が挙げられる。
袋状の形態は特に限定されないが、例えば、三方袋、四方袋、ピロー袋、ガセット袋、スティック袋等が挙げられる。
本実施形態に係る包装材は、例えば、食品、医薬品、工業用品、日用品、化粧品等を包装するために用いられる包装材として好適に用いることができ、食品包装材として特に好適に用いることができる。
本実施形態に係る包装体は、本実施形態に係る包装材と、上記包装材により包装された物品と、を備える。
上記物品としては、例えば、食品、医薬品、工業用品、日用品等が挙げられる。
基材層1:PET/LDPE/AL(アンカーコート剤を塗布したポリエチレンテレフタレートフィルム(厚み:12μm)と低密度ポリエチレンフィルム(MFR:7.2g/10分、密度917kg/m3、厚み:15μm)とAL箔(厚み:7μm)との積層フィルム)
(エチレン・不飽和カルボン酸系共重合体のアイオノマー(B1))
IO-1:エチレン・メタクリル酸共重合体のアイオノマー(エチレン含有量:90質量%、メタクリル酸含有量:10質量%、金属イオン:亜鉛、中和度:60モル%、MFR:1.8g/10分)
IO-2:エチレン・メタクリル酸共重合体のアイオノマー(エチレン含有量:90質量%、メタクリル酸含有量:10質量%、金属イオン:亜鉛、中和度:73モル%、MFR:1.0g/10分)
IO-3:エチレン・メタクリル酸共重合体のアイオノマー(エチレン含有量:85質量%、メタクリル酸含有量:15質量%、金属イオン:亜鉛、中和度:59モル%、MFR:0.9g/10分)
IO-4:エチレン・メタクリル酸共重合体のアイオノマー(エチレン含有量:85質量%、メタクリル酸含有量:15質量%、金属イオン:ナトリウム、中和度:54モル%、MFR:0.9g/10分)
IO-5:エチレン・メタクリル酸共重合体のアイオノマー(エチレン含有量:85質量%、メタクリル酸含有量:15質量%、金属イオン:亜鉛、中和度:23モル%、MFR:5.0g/10分)
IO-6:エチレン・メタクリル酸共重合体のアイオノマー(エチレン含有量:90質量%、メタクリル酸含有量:10質量%、金属イオン:ナトリウム、中和度:50%、MFR:1.3g/10分)
IO-7:アイオノマー(製品名:ハイミラン1601、三井・デュポンポリケミカル株式会社製)
LDPE1(低密度ポリエチレン、MFR:7.2g/10分、密度917kg/m3)
LLDPE1(線状低密度ポリエチレンフィルム、三井化学東セロ社製、製品名:TUX-TCS)
LLDPE2(線状低密度ポリエチレンフィルム、三井化学東セロ社製、製品名:TUX-HC)
LLDPE3(線状低密度ポリエチレンフィルム、三井化学東セロ社製、製品名:TUX-MCS)
LLDPE4(線状低密度ポリエチレンフィルム、三井化学東セロ社製、製品名:TUX-VCS)
LLDPE5(線状低密度ポリエチレンフィルム、タマポリ社製、製品名:LC-2、易引裂き性付与タイプ)
基材層(A)のAl箔およびヒートシール性層(C)の間に、表1に示すエチレン・不飽和カルボン酸系共重合体のアイオノマー(B1)または低密度ポリエチレンを押出コーティングすることにより、基材層(A)上に樹脂層(B)(アイオノマー樹脂層(B)または低密度ポリエチレン層)を形成し、表1に示す層構成の積層フィルムをそれぞれ得た。押出コーティングの条件は以下のとおりである。
押出機:65mmφ押出機(L/D=28)
押出コーティング温度(ダイ下温度):300℃、押出コーティング速度:80m/min、エアーギャップ:110mm
得られた積層フィルムについて以下の評価をそれぞれおこなった。得られた結果を表1にそれぞれ示す。
(1)手感触による評価
得られた積層フィルムを二つ折りにし、折り部へ5mmの切れ目を入れた。次いで、切れ目より両手で前後にカットした際の切れ易さを下記基準により相対評価をパネラー3名で実施、評定により判断した。ここで、積層フィルムの作製時のアイオノマー樹脂層(B)の流れ方向(MD)とそれと交わる垂直方向(TD)を評価した。
〇:切れ易い、またはフィルムが若干伸びるが切れる
×:切れ難い、切れない、またはフィルムが大きく伸びて切れる
JIS K7128(1998)に準拠し、標準状態(23℃、50%RH)および引張速度200mm/minの条件で、MD方向およびTD方向における積層フィルムの引裂き強度を測定し、積層フィルムの引裂性を評価した。
なお、比較例1~4及び参考例1は、TD方向の引裂強度が5.0N超過であったためMD方向の引裂強度は測定しなかった。
引裂性としては、上記手感触で〇と判定され、かつ、引裂き強度がMD方向およびTD方向の両方とも5.0N以下である場合を良好とした。
Claims (13)
- 基材層(A)と、
前記基材層(A)の一方の面に設けられ、かつ、エチレン・不飽和カルボン酸系共重合体のアイオノマー(B1)を含むアイオノマー樹脂層(B)と、
を少なくとも備える積層フィルムであって、
前記エチレン・不飽和カルボン酸系共重合体のアイオノマー(B1)を構成するエチレン・不飽和カルボン酸系共重合体(B2)中の不飽和カルボン酸の含有量をX[質量%]とし、
前記エチレン・不飽和カルボン酸系共重合体のアイオノマー(B1)の中和度をY[モル%]としたとき、
X×Y/100で表される金属イオン含有量が5.0を超えて20.0以下である積層フィルム。 - 請求項1に記載の積層フィルムにおいて、
JIS K7128(1998)に準拠して測定される、前記アイオノマー樹脂層(B)のMD方向およびTD方向における当該積層フィルムの引裂強度がそれぞれ5.0N以下である積層フィルム。 - 請求項1または2に記載の積層フィルムにおいて、
JIS K7210:1999に準拠し、190℃、2160g荷重の条件で測定される、前記エチレン・不飽和カルボン酸系共重合体のアイオノマー(B1)のメルトフローレート(MFR)が0.1g/10分以上30g/10分以下である積層フィルム。 - 請求項1乃至3のいずれか一項に記載の積層フィルムにおいて、
前記アイオノマー樹脂層(B)の厚みが5μm以上である積層フィルム。 - 請求項1乃至4のいずれか一項に記載の積層フィルムにおいて、
前記アイオノマー樹脂層(B)が押出コーティング加工層である積層フィルム。 - 請求項1乃至5のいずれか一項に記載の積層フィルムにおいて、
前記エチレン・不飽和カルボン酸系共重合体(B2)を構成する不飽和カルボン酸が、アクリル酸およびメタクリル酸から選ばれる少なくとも一種を含む積層フィルム。 - 請求項1乃至6のいずれか一項に記載の積層フィルムにおいて、
前記エチレン・不飽和カルボン酸系共重合体のアイオノマー(B1)を構成する金属イオンが、ナトリウムイオン、亜鉛イオンおよびマグネシウムイオンから選ばれる少なくとも一種を含む積層フィルム。 - 請求項1乃至7のいずれか一項に記載の積層フィルムにおいて、
前記基材層(A)が金属箔、ポリオレフィンフィルム、ポリエステルフィルム、ポリアミドフィルムおよびセロハンからなる群から選択される少なくとも一種を含む積層フィルム。 - 請求項8に記載の積層フィルムにおいて、
前記基材層(A)が金属箔を含む積層フィルム。 - 請求項1乃至9のいずれか一項に記載の積層フィルムにおいて、
ヒートシール性層(C)をさらに備える積層フィルム。 - 請求項10に記載の積層フィルムにおいて、
前記ヒートシール性層(C)がポリオレフィンを含む積層フィルム。 - 請求項1乃至11のいずれか一項に記載の積層フィルムにより構成された層を少なくとも備える包装材。
- 請求項12に記載の包装材と、前記包装材により包装された物品と、を備える包装体。
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP19777149.6A EP3778232B1 (en) | 2018-03-27 | 2019-03-20 | Laminate film, packaging material, and packaging body |
MX2020010090A MX2020010090A (es) | 2018-03-27 | 2019-03-20 | Pelicula laminada, material de envasado, y envase. |
BR112020019746-7A BR112020019746B1 (pt) | 2018-03-27 | 2019-03-20 | Filme laminado, material de empacotamento e pacote |
US16/978,111 US20210009326A1 (en) | 2018-03-27 | 2019-03-20 | Laminated film, packaging material, and package |
JP2020510798A JP6993497B2 (ja) | 2018-03-27 | 2019-03-20 | 積層フィルム、包装材および包装体 |
CN201980021726.4A CN111902282A (zh) | 2018-03-27 | 2019-03-20 | 层叠膜、包装材料及包装体 |
CONC2020/0012384A CO2020012384A2 (es) | 2018-03-27 | 2020-10-15 | Película laminada, material de envasado, y envase |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2018059969 | 2018-03-27 | ||
JP2018-059969 | 2018-03-27 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2019188696A1 true WO2019188696A1 (ja) | 2019-10-03 |
Family
ID=68059952
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2019/011813 WO2019188696A1 (ja) | 2018-03-27 | 2019-03-20 | 積層フィルム、包装材および包装体 |
Country Status (10)
Country | Link |
---|---|
US (1) | US20210009326A1 (ja) |
EP (1) | EP3778232B1 (ja) |
JP (1) | JP6993497B2 (ja) |
CN (1) | CN111902282A (ja) |
AR (1) | AR114604A1 (ja) |
BR (1) | BR112020019746B1 (ja) |
CO (1) | CO2020012384A2 (ja) |
MX (1) | MX2020010090A (ja) |
TW (1) | TWI807000B (ja) |
WO (1) | WO2019188696A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2020179616A1 (ja) * | 2019-03-01 | 2020-09-10 | 三井・ダウポリケミカル株式会社 | 積層体および包装容器 |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2000202956A (ja) | 1999-01-19 | 2000-07-25 | Du Pont Mitsui Polychem Co Ltd | 易横裂き性積層フィルム |
JP2001348468A (ja) * | 2000-06-05 | 2001-12-18 | Du Pont Mitsui Polychem Co Ltd | 易引き裂き性のあるフィルム乃至シート |
JP2002210895A (ja) | 2001-01-18 | 2002-07-31 | Mitsui Chemicals Inc | 易引き裂き性複合フィルム |
JP2008031380A (ja) * | 2006-07-31 | 2008-02-14 | Mitsui Chemicals Inc | 易引裂き性フィルムおよびその製造方法ならびにその用途 |
JP2016068567A (ja) * | 2014-09-29 | 2016-05-09 | 積水フィルム株式会社 | 多層熱収縮フィルム及びその製造方法 |
JP2018059969A (ja) | 2016-10-03 | 2018-04-12 | Hoya株式会社 | 撮像光学系 |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7951873B2 (en) * | 2006-05-05 | 2011-05-31 | Exxonmobil Chemical Patents Inc. | Linear low density polymer blends and articles made therefrom |
TWI516376B (zh) * | 2013-09-10 | 2016-01-11 | Great Eastern Resins Ind Co Ltd | For bonding the ionic polymer layer and the thermoplastic polyurethane layer |
-
2019
- 2019-03-20 EP EP19777149.6A patent/EP3778232B1/en active Active
- 2019-03-20 CN CN201980021726.4A patent/CN111902282A/zh active Pending
- 2019-03-20 JP JP2020510798A patent/JP6993497B2/ja active Active
- 2019-03-20 WO PCT/JP2019/011813 patent/WO2019188696A1/ja unknown
- 2019-03-20 MX MX2020010090A patent/MX2020010090A/es unknown
- 2019-03-20 BR BR112020019746-7A patent/BR112020019746B1/pt active IP Right Grant
- 2019-03-20 US US16/978,111 patent/US20210009326A1/en active Pending
- 2019-03-26 TW TW108110518A patent/TWI807000B/zh active
- 2019-03-26 AR ARP190100752A patent/AR114604A1/es active IP Right Grant
-
2020
- 2020-10-15 CO CONC2020/0012384A patent/CO2020012384A2/es unknown
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2000202956A (ja) | 1999-01-19 | 2000-07-25 | Du Pont Mitsui Polychem Co Ltd | 易横裂き性積層フィルム |
JP2001348468A (ja) * | 2000-06-05 | 2001-12-18 | Du Pont Mitsui Polychem Co Ltd | 易引き裂き性のあるフィルム乃至シート |
JP2002210895A (ja) | 2001-01-18 | 2002-07-31 | Mitsui Chemicals Inc | 易引き裂き性複合フィルム |
JP2008031380A (ja) * | 2006-07-31 | 2008-02-14 | Mitsui Chemicals Inc | 易引裂き性フィルムおよびその製造方法ならびにその用途 |
JP2016068567A (ja) * | 2014-09-29 | 2016-05-09 | 積水フィルム株式会社 | 多層熱収縮フィルム及びその製造方法 |
JP2018059969A (ja) | 2016-10-03 | 2018-04-12 | Hoya株式会社 | 撮像光学系 |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2020179616A1 (ja) * | 2019-03-01 | 2020-09-10 | 三井・ダウポリケミカル株式会社 | 積層体および包装容器 |
JPWO2020179616A1 (ja) * | 2019-03-01 | 2021-11-11 | 三井・ダウポリケミカル株式会社 | 積層体および包装容器 |
JP7192088B2 (ja) | 2019-03-01 | 2022-12-19 | 三井・ダウポリケミカル株式会社 | 積層体の製造方法 |
Also Published As
Publication number | Publication date |
---|---|
US20210009326A1 (en) | 2021-01-14 |
EP3778232A4 (en) | 2021-12-15 |
MX2020010090A (es) | 2020-10-28 |
CN111902282A (zh) | 2020-11-06 |
EP3778232B1 (en) | 2024-05-01 |
BR112020019746B1 (pt) | 2022-10-11 |
TW201941942A (zh) | 2019-11-01 |
TWI807000B (zh) | 2023-07-01 |
JP6993497B2 (ja) | 2022-01-13 |
BR112020019746A2 (pt) | 2021-03-02 |
AR114604A1 (es) | 2020-09-23 |
JPWO2019188696A1 (ja) | 2021-02-12 |
EP3778232A1 (en) | 2021-02-17 |
CO2020012384A2 (es) | 2021-03-19 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP6791728B2 (ja) | ポリプロピレン系延伸シーラントフィルム及びこれを用いたフィルム積層体 | |
JP5875454B2 (ja) | 逐次二軸延伸多層フィルム | |
JP7162136B2 (ja) | 軟包装用積層体、軟包装材および軟包装体 | |
JP2003225979A (ja) | ヒートシール性積層ポリプロピレン系樹脂フィルム及び包装体 | |
JP6262071B2 (ja) | ヒートシール性フィルム及び積層体 | |
JP6775965B2 (ja) | 包装用積層フィルムおよび包装袋 | |
WO2019188696A1 (ja) | 積層フィルム、包装材および包装体 | |
JP3234530U (ja) | 紙カップ容器用蓋材及び包装容器 | |
JP7192088B2 (ja) | 積層体の製造方法 | |
JP7449688B2 (ja) | 易開封性フィルムおよび包装体 | |
JP6391519B2 (ja) | ヒートシール用組成物及び積層体 | |
JP4747538B2 (ja) | ヒートシール性積層ポリプロピレン系樹脂フィルム及び包装体 | |
JP2007176056A (ja) | ヒートシール性積層ポリプロピレン系樹脂フイルム及び包装体 | |
JP2021001032A (ja) | 包装用積層フィルムおよび包装袋 | |
JP6922070B2 (ja) | 積層フィルム、包装材、包装体および積層フィルムの製造方法 | |
JP7237093B2 (ja) | 紙容器用積層体および紙容器 | |
JP7419088B2 (ja) | フィルム、共押出フィルム、および、包装体 | |
JP2022151018A (ja) | 積層体、包装材、包装体および積層体の製造方法 | |
JP2005067176A (ja) | ヒートシール性積層ポリプロピレン系樹脂フイルム及び包装体 | |
JP2021133590A (ja) | 易開封性フィルムおよび包装体 | |
JP2022053375A (ja) | フィルム、共押出フィルム、包装体、および、袋体 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 19777149 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 2020510798 Country of ref document: JP Kind code of ref document: A |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
REG | Reference to national code |
Ref country code: BR Ref legal event code: B01A Ref document number: 112020019746 Country of ref document: BR |
|
ENP | Entry into the national phase |
Ref document number: 2019777149 Country of ref document: EP Effective date: 20201027 |
|
ENP | Entry into the national phase |
Ref document number: 112020019746 Country of ref document: BR Kind code of ref document: A2 Effective date: 20200928 |