WO2023171155A1 - Composition de résine pour film d'étanchéité, film d'étanchéité, film multicouche et procédé de production de film d'étanchéité - Google Patents

Composition de résine pour film d'étanchéité, film d'étanchéité, film multicouche et procédé de production de film d'étanchéité Download PDF

Info

Publication number
WO2023171155A1
WO2023171155A1 PCT/JP2023/001862 JP2023001862W WO2023171155A1 WO 2023171155 A1 WO2023171155 A1 WO 2023171155A1 JP 2023001862 W JP2023001862 W JP 2023001862W WO 2023171155 A1 WO2023171155 A1 WO 2023171155A1
Authority
WO
WIPO (PCT)
Prior art keywords
mass
parts
propylene
resin composition
less
Prior art date
Application number
PCT/JP2023/001862
Other languages
English (en)
Japanese (ja)
Inventor
輝 神阪
健介 大西
直 井上
Original Assignee
住友化学株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 住友化学株式会社 filed Critical 住友化学株式会社
Priority to CN202380022712.0A priority Critical patent/CN118715279A/zh
Priority to JP2024505936A priority patent/JPWO2023171155A1/ja
Publication of WO2023171155A1 publication Critical patent/WO2023171155A1/fr

Links

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
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • 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
    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/18—Manufacture of films or sheets
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/04—Homopolymers or copolymers of ethene
    • C08L23/08—Copolymers of ethene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/10—Homopolymers or copolymers of propene

Definitions

  • the present invention relates to a resin composition for a sealant film, a sealant film containing the resin composition for a sealant film, a multilayer film comprising the sealant film, and a method for producing a sealant film using the resin composition for a sealant film. .
  • films used for various packaging materials have a structure in which a biaxially stretched polyethylene terephthalate (PET) film is used as a base film, and a polypropylene (PP) unstretched film is laminated on the base film as a sealant film.
  • PET polyethylene terephthalate
  • PP polypropylene
  • a polypropylene biaxially stretched film has inferior heat resistance compared to a polyethylene terephthalate biaxially stretched film.
  • sealant films are used that can be heat-sealed at low temperatures without melting the base film, which is a biaxially stretched polypropylene film.
  • Patent Document 1 describes a composition comprising 65 to 75% by weight of a propylene polymer (A) and 35 to 25% by weight of a propylene-ethylene random copolymer (B),
  • the copolymer (B) has an intrinsic viscosity of 3.0 to 4.5 dl/g, and the ratio of the intrinsic viscosity of the copolymer (B) to the intrinsic viscosity of the polymer (A) is 1.9 to 4.5 dl/g. 2.6, and a resin composition having an n-hexane extraction amount of 3.0% by weight or less has been proposed.
  • packaging bags formed using a sealant film are sometimes subjected to sterilization treatment by heating to a temperature of 120° C. or higher while food is housed in the packaging bag, for example, in applications for retort food packaging. be.
  • the sealant film formed using the resin composition described in Patent Document 1 is heated to a temperature of 120° C. or higher, there is a possibility that the sealant films may fuse together. Therefore, there is a demand for a sealant film that is excellent in the ability to prevent sealant films from fusing together (hereinafter also referred to as "retort fusing resistance”) in such a temperature range.
  • the present invention has been made in view of the above circumstances, and provides a resin composition for sealant film, which makes it possible to obtain a sealant film with relatively excellent retort fusion resistance, and a resin composition for sealant film.
  • An object of the present invention is to provide a sealant film containing the present invention, a multilayer film including the sealant film, and a method for producing a sealant film using the resin composition for a sealant film.
  • the resin composition for sealant film according to the present invention is A propylene polymer (1) containing 98% by mass or more of structural units derived from propylene; More than 40% by mass and less than 90% by mass of structural units derived from propylene, and more than 10% by mass and less than 60% by mass of structural units derived from at least one selected from the group consisting of ethylene and ⁇ -olefins having 4 to 12 carbon atoms.
  • the sealant film according to the present invention contains the above resin composition for sealant film.
  • the multilayer film according to the present invention includes the above sealant film as a sealant layer.
  • the method for manufacturing a sealant film according to the present invention includes: A melt-kneading step of melt-kneading the above resin composition for sealant film, an extrusion step of extruding the melt-kneaded composition; A film forming step of forming the extruded composition into a film having a thickness of 5 ⁇ m or more and 200 ⁇ m or less is included.
  • a resin composition for a sealant film capable of obtaining a sealant film having relatively excellent retort fusion resistance, a sealant film containing the resin composition for a sealant film, and a multilayer film comprising the sealant film.
  • a film and a method for producing a sealant film using the resin composition for sealant film can be provided.
  • the resin composition for a sealant film according to the present embodiment contains a propylene polymer (1), a propylene copolymer (2), and a ⁇ crystal nucleating agent. Further, the resin composition for sealant film may contain a propylene copolymer (3) from the viewpoint of having excellent heat seal strength at low temperatures. Furthermore, the resin composition for sealant film may contain an ethylene copolymer from the viewpoint of having better retort fusion resistance.
  • the propylene polymer (1) contains 98% by mass or more of structural units derived from propylene.
  • the content of structural units derived from propylene in the propylene polymer (1) is preferably 99% by mass or more and 100% by mass or less, and more preferably 100% by mass. That is, the propylene polymer (1) may be a propylene homopolymer.
  • the propylene polymer (1) may contain a structural unit derived from at least one member selected from the group consisting of ethylene and ⁇ -olefins having 4 to 12 carbon atoms.
  • the content of structural units derived from at least one selected from the group consisting of ethylene and ⁇ -olefins having 4 to 12 carbon atoms in the propylene polymer (1) is preferably 2% by mass or less, more preferably is from 0% by mass to 1% by mass.
  • the propylene copolymer (2) contains more than 40% by mass and less than 90% by mass of structural units derived from propylene and at least one member selected from the group consisting of ethylene and ⁇ -olefins having 4 to 12 carbon atoms. More than 10% by mass and less than 60% by mass of structural units.
  • the content of structural units derived from propylene in the propylene copolymer (2) is preferably more than 50% by mass and less than 90% by mass, more preferably more than 50% by mass and not more than 80% by mass, and even more preferably It is 60% by mass or more and 80% by mass or less. Further, the content of structural units derived from at least one selected from the group consisting of ethylene and ⁇ -olefins having 4 to 12 carbon atoms is preferably more than 10% by mass and less than 50% by mass, more preferably 20% by mass. The content is at least 20% by mass and less than 50% by mass, more preferably at least 20% by mass and at most 40% by mass.
  • the structural units derived from propylene are more than 50% by mass and less than 90% by mass, and the structural units derived from ethylene. More than 10% by mass and less than 50% by mass.
  • Examples of the ⁇ -olefin having 4 to 12 carbon atoms in the propylene polymer (1) and the propylene copolymer (2) include 1-butene, 1-hexene, and 1-octene, preferably It is 1-butene.
  • the structural unit derived from an ⁇ -olefin having 4 to 12 carbon atoms may be a structural unit derived from one type of ⁇ -olefin alone or a structural unit derived from two or more types of ⁇ -olefin. good.
  • Examples of the method for producing the propylene polymer (1) and the propylene copolymer (2) include a method in which raw materials such as propylene and ethylene are polymerized using a Ziegler-Natta catalyst, a metallocene catalyst, or the like.
  • the propylene polymer (1) and propylene copolymer (2) can be polymerized in an inert solvent such as hexane, heptane, toluene, or xylene, or in liquid propylene or ethylene. , a method in which a catalyst is added to gaseous propylene or ethylene and polymerization is carried out in a gas phase, or a method in which a combination of these is polymerized.
  • the method for producing the propylene polymer (1) and the propylene copolymer (2) preferably involves producing the propylene polymer (1) in the substantial absence of an inert solvent. At least one kind selected from the group consisting of propylene, ethylene, and an ⁇ -olefin having 4 to 12 carbon atoms in the gas phase in the presence of the propylene polymer (1).
  • a second step is performed in which a propylene-based copolymer (2) is produced by polymerizing the above, and a propylene-based multi-stage polymer is obtained.
  • the propylene-based multistage polymer is a propylene-based polymer composition containing a propylene-based polymer (1) component and a propylene-based copolymer (2) component.
  • the method for adjusting the ethylene content of the propylene polymer (1) and propylene copolymer (2) is to add a molecular weight regulator such as hydrogen gas or a metal compound and ethylene to each step during polymerization.
  • a molecular weight regulator such as hydrogen gas or a metal compound and ethylene
  • Examples include methods of adding in a certain amount, and methods of adjusting temperature, pressure, etc. during polymerization.
  • the production ratio of propylene polymer (1) and propylene copolymer (2) is determined by the polymerization time in the first and second steps, the size of the polymerization tank, the amount of polymer retained in the polymerization tank, and the polymerization temperature. , polymerization pressure, etc. If necessary, drying may be performed at a temperature below the melting temperature of polypropylene in order to remove residual solvent of polypropylene and ultra-low molecular weight oligomers produced as by-products during production. Examples of the drying method include methods described in JP-A-55-75410 and Japanese Patent No. 2565753.
  • the melt flow rate (MFR) of the propylene-based multistage polymer obtained in the second step, measured at a temperature of 230°C and a load of 2.16 kg, is preferably from the viewpoint of improving the processability and hygiene of the film. is 0.001 g/10 minutes or more and 10 g/10 minutes or less, more preferably 0.01 g/10 minutes or more and 10 g/10 minutes or less, and even more preferably 0.01 g/10 minutes or more and 5 g/10 minutes or less. be. Further, even in a propylene polymer composition containing a propylene multistage polymer and other components, the MFR can be made to be in the same range as the above-mentioned propylene multistage polymer. Note that MFR is measured by method A specified in JIS K7210-1.
  • the propylene-based copolymer (3) contains structural units derived from propylene in an amount of 90% by mass or more and less than 98% by mass, and derived from at least one member selected from the group consisting of ethylene and ⁇ -olefins having 4 to 12 carbon atoms. More than 2% by mass and not more than 10% by mass of structural units.
  • the content of structural units derived from propylene in the propylene copolymer (3) is preferably 94% by mass or more and less than 98% by mass, more preferably 94% by mass or more and 97% by mass or less. Further, the content of structural units derived from at least one selected from the group consisting of ethylene and ⁇ -olefins having 4 to 12 carbon atoms in the propylene copolymer (3) is preferably more than 2% by mass and 6% by mass. % or less, more preferably 3% by mass or more and 6% by mass or less.
  • Examples of the ⁇ -olefin having 4 to 12 carbon atoms include 1-butene, 1-hexene, and 1-octene, with 1-butene being preferred.
  • the structural unit derived from an ⁇ -olefin having 4 to 12 carbon atoms may be a structural unit derived from one type of ⁇ -olefin alone or a structural unit derived from two or more types of ⁇ -olefin. good.
  • the propylene copolymer (3) may be produced using a heterogeneous catalyst or may be produced using a homogeneous catalyst (for example, a metallocene catalyst).
  • the melt flow rate (MFR) of the propylene copolymer (3) measured at a temperature of 230°C and a load of 2.16 kg is preferably 1 g/10 minutes or more and 10 g/10 minutes or less, more preferably 1 g/10 minutes. It is 8 g/10 minutes or more, more preferably 2 g/10 minutes or more and 5 g/10 minutes or less. Furthermore, even in a propylene polymer composition containing the propylene copolymer (3) and other components, it is possible to set the MFR to the same range as the above-mentioned propylene copolymer (3). can. Note that MFR is measured by method A specified in JIS K7210-1.
  • the melting point of the propylene copolymer (3) measured by differential scanning calorimetry is preferably 120°C or more and 165°C or less, more preferably 120°C or more and 150°C or less, and even more preferably is 125°C or more and 150°C or less.
  • the ethylene copolymer contains structural units derived from ethylene in an amount of 60% by mass to 98% by mass, and structural units derived from ⁇ -olefins having 4 to 12 carbon atoms in a content of 2% by mass to 40% by mass, including.
  • the content of structural units derived from ethylene in the ethylene copolymer is preferably 70% by mass or more and 95% by mass or less, more preferably 75% by mass or more and 95% by mass or less, and even more preferably 80% by mass.
  • the content is 95% by mass or less.
  • the content of structural units derived from ⁇ -olefins having 4 to 12 carbon atoms in the ethylene copolymer is preferably 5% by mass or more and 30% by mass or less, more preferably 5% by mass or more and 25% by mass. % or less, more preferably 5% by mass or more and 20% by mass or less.
  • Examples of ⁇ -olefins having 4 to 12 carbon atoms include 1-butene, 1-pentene, 1-hexene, 1-heptene, 1-octene, 1-nonene, 1-decene, and 4-methyl-1-pentene. , 4-methyl-1-hexene, etc., and 1-hexene is preferable from the viewpoint of increasing heat sealing strength.
  • the ⁇ -olefin having 4 to 12 carbon atoms is preferably an ⁇ -olefin having 4 to 8 carbon atoms.
  • the structural unit derived from an ⁇ -olefin having 4 to 12 carbon atoms may be a structural unit derived from one type of ⁇ -olefin alone or a structural unit derived from two or more types of ⁇ -olefin. good.
  • the density of the ethylene copolymer is preferably 850 kg/m 3 or more and 950 kg/m 3 or less, more preferably 850 kg/m 3 or more and 930 kg/m 3 or less, and even more preferably 880 kg/m 3 or more and 930 kg/m 3 or less. m 3 or less.
  • the density of the ethylene copolymer is 850 kg/m 3 or more, a film with excellent rigidity can be obtained, and when the density is 950 kg/m 3 or less, a film with excellent impact resistance at low temperatures can be obtained. Obtainable.
  • the density can be within the same range as the density of the above-mentioned ethylene copolymer.
  • the density of the ethylene copolymer is measured according to JIS K6922-1.
  • the melt flow rate (MFR) of the ethylene copolymer measured at a temperature of 190° C. and a load of 2.16 kg is preferably 0.1 g/10 minutes or more and 50 g/10 minutes or less, more preferably 0.1 g/10 minutes or less. It is 10 minutes or more and 10 g/10 minutes or less, more preferably 1 g/10 minutes or more and 5 g/10 minutes or less. Furthermore, even in an ethylene polymer composition containing an ethylene copolymer and other components, the MFR can be made within the same range as the above-mentioned ethylene copolymer. Note that MFR is measured by method A specified in JIS K7210-1.
  • the molecular weight distribution of the ethylene copolymer is preferably 1 or more and 5 or less, more preferably 1 or more and 4 or less, and still more preferably 2 or more and 4 or less.
  • molecular weight distribution of the ethylene copolymer is 1 or more, extrusion load is reduced and processability is improved. Further, by setting the molecular weight distribution of the ethylene copolymer to 5 or less, a film having excellent impact resistance at low temperatures can be obtained.
  • “molecular weight distribution” refers to the ratio of weight average molecular weight (Mw) to number average molecular weight (Mn) (Mw/ Mn).
  • ethylene and ⁇ -olefin are copolymerized using a metallocene catalyst, and the density of the ethylene copolymer is made to be 850 kg/m 3 or more.
  • a method for reducing the weight to 950 kg/m 3 or less can be mentioned.
  • Ethylene-based copolymers can be produced using, for example, metallocene catalysts.
  • a metallocene catalyst is, for example, a catalyst for olefin polymerization using a transition metal compound having a group having a cyclopentadiene type anion skeleton (hereinafter sometimes referred to as a "metallocene transition metal compound").
  • the metallocene transition metal compound is, for example, a compound of the formula MLaXna (where M is a transition metal atom of Group 4 of the periodic table of elements or a lanthanide series; L is a group having a cyclopentadiene type anion skeleton or a hetero A group containing atoms, at least one of which has a cyclopentadiene type anion skeleton. Plural Ls may be crosslinked with each other.
  • X is a halogen atom, a hydrogen atom, or a group having 1 to 20 carbon atoms. It is a hydrocarbon group.N represents the valence of a transition metal atom, and a is an integer satisfying 0 ⁇ a ⁇ n).
  • Examples of the metallocene transition metal compound represented by the above formula include bis(1,3-n-butylmethylcyclopentadienyl)zirconium dichloride, bis(1,3-n-propylmethylcyclopentadienyl) Zirconium dichloride, bis(n-butylcyclopentadienyl)zirconium dichloride, bis(1,3-dimethylcyclopentadienyl)zirconium dichloride, bis(1,3-diethylcyclopentadienyl)zirconium dichloride, ethylene bis(indenyl) ) zirconium dichloride, ethylenebis(4-methyl-1-indenyl)zirconium dichloride, ethylenebis(4,5,6,7-tetrahydro-1-indenyl)zirconium dichloride, and the like.
  • the metallocene transition metal compound described above is preferably used in contact with an activation promoter.
  • the activation co-catalyst include an alumoxane compound and an activation co-catalyst formed by using a combination of an organoaluminum compound and a boron compound such as trityl borate or anilinium borate. Further, it may be used in combination with a particulate carrier including an inorganic carrier such as SiO 2 or Al 2 O 3 or an organic carrier such as a polymer such as ethylene or styrene.
  • a ⁇ -crystal nucleating agent refers to a compound that can form a ⁇ -crystal, which is a hexagonal crystal structure, in a propylene polymer.
  • the ⁇ -crystal nucleating agent various conventionally known ⁇ -crystal nucleating agents can be used.
  • amide compounds such as N,N'-dicyclohexyl-2,6-naphthalene dicarboxamide, N,N'-dicyclohexyl terephthalamide, N,N'-diphenylhexanediamide, tetraoxaspiro compounds, quinacridone, Quinacridones represented by quinacridone quinone, iron oxide with nanoscale size, calcium pimelate, potassium 1,2-hydroxystearate, magnesium benzoate or succinate, carboxylic acids represented by magnesium phthalate, etc.
  • alkaline or alkaline earth metal salts aromatic sulfonic acid compounds represented by sodium benzenesulfonate or sodium naphthalenesulfonate, diesters or triesters of di- or tribasic carboxylic acids, phthalocyanine blue, etc.
  • Commercially available products of N,N'-dicyclohexyl-2,6-naphthalenedicarboxyamide include, for example, NU-100 (manufactured by Shin Nippon Chemical Co., Ltd.).
  • the concentration of the ⁇ -crystal nucleating agent is preferably 100 mass ppm or more and 3000 mass ppm or less, more preferably 300 mass ppm or more and 2000 mass ppm or less, and still more preferably 300 mass ppm or more and 3000 mass ppm or less.
  • the content ranges from 500 ppm to 1500 ppm by mass, particularly preferably from 500 ppm to 1500 ppm by mass.
  • the resin composition for sealant film according to the present embodiment may contain additives and other resins as necessary.
  • additives include antioxidants, neutralizers, ultraviolet absorbers, antistatic agents, lubricants, nucleating agents, adhesives, antifogging agents, antiblocking agents, melt flow rate regulators, and the like.
  • antioxidants include phenolic antioxidants, phosphorous antioxidants, sulfur-based antioxidants, etc., which have both a phenol-based antioxidant mechanism and a phosphorus-based antioxidant mechanism in one molecule. Complex type antioxidants having units can also be used.
  • Examples of other resins include elastomers such as styrene-butadiene-styrene copolymer and styrene copolymer rubber obtained by hydrogenating styrene-isoprene-styrene copolymer.
  • the content of the propylene polymer (1) is preferably set to 100 parts by mass in total of the content of the polymers contained in the resin composition. 50 parts by mass or more and 95 parts by mass or less, more preferably 50 parts by mass or more and less than 89 parts by mass, even more preferably 60 parts by mass or more and less than 89 parts by mass, particularly preferably 60 parts by mass or more and less than 80 parts by mass. It is. Further, the content of the propylene copolymer (2) is preferably 5 parts by mass or more and 50 parts by mass or less with respect to a total of 100 parts by mass of the polymers contained in the resin composition. , more preferably more than 11 parts by weight and not more than 50 parts by weight, still more preferably more than 11 parts by weight and not more than 40 parts by weight, particularly preferably not less than 20 parts by weight and not more than 40 parts by weight.
  • the total content of polymers contained in the resin composition is Preferably, the content of the propylene polymer (1) is 50 parts by mass or more and 95 parts by mass or less, and the content of the propylene copolymer (2) is 5 parts by mass or more with respect to 100 parts by mass. 50 parts by mass or less, more preferably, the content of the propylene polymer (1) is 50 parts by mass or more and less than 89 parts by mass, and the content of the propylene copolymer (2) is 11 parts by mass. More than 50 parts by mass or less.
  • the propylene-based copolymer (3) is The content of the polymer (1) is preferably 10 parts by mass or more and 78 parts by mass or less, more preferably 10 parts by mass or more and 70 parts by mass or less, and even more preferably 20 parts by mass or more and 60 parts by mass or less. , particularly preferably 20 parts by mass or more and 50 parts by mass or less, and the content of the propylene copolymer (2) is preferably 2 parts by mass or more and 40 parts by mass or less, more preferably 5 parts by mass or more and 40 parts by mass.
  • the content of the propylene copolymer (3) is preferably 20 parts by weight. parts to 80 parts by mass, more preferably 20 parts to 70 parts by mass, still more preferably 30 parts to 70 parts by mass, particularly preferably 35 parts to 65 parts by mass. .
  • a polymer contained in the resin composition from the viewpoint of excellent retort fusion resistance and heat sealing strength at low temperatures, it is preferable to use a polymer contained in the resin composition.
  • the content of the propylene polymer (1) is 10 parts by mass or more and 78 parts by mass or less, and the content of the propylene copolymer (2) is 2 parts by mass or more with respect to the total content of 100 parts by mass.
  • the content of the propylene copolymer (3) is 20 parts by mass or more and 80 parts by mass or less.
  • the propylene-based polymer ( The content of 1) is preferably 35 parts by mass or more and 75 parts by mass or less, more preferably 40 parts by mass or more and 75 parts by mass or less, still more preferably 40 parts by mass or more and 70 parts by mass or less, and particularly preferably is 45 parts by mass or more and 70 parts by mass or less, and the content of the propylene copolymer (2) is preferably 5 parts by mass or more and 50 parts by mass or less, more preferably 5 parts by mass or more and 45 parts by mass or less.
  • the content of the ethylene copolymer is preferably 10 parts by mass or more and 45 parts by mass or less, particularly preferably 10 parts by mass or more and 40 parts by mass or less, and the content of the ethylene copolymer is preferably 2 parts by mass or more and 30 parts by mass or less. It is more preferably 5 parts by mass or more and 30 parts by mass or less, still more preferably 10 parts by mass or more and 30 parts by mass or less, particularly preferably 15 parts by mass or more and 30 parts by mass or less.
  • the resin composition for a sealant film according to the present embodiment from the viewpoint of excellent retort fusion resistance and excellent bag breakage resistance, the resin composition preferably contains a polymer contained in the resin composition.
  • the content of propylene polymer (1) is 35 parts by mass or more and 75 parts by mass or less, and the content of propylene copolymer (2) is 5 parts by mass or more and 50 parts by mass.
  • the content of the ethylene copolymer is 2 parts by mass or more and 30 parts by mass or less.
  • the sealant film according to this embodiment contains the above resin composition for sealant film.
  • the thickness of the sealant film is preferably 5 ⁇ m or more and 200 ⁇ m or less, more preferably 30 ⁇ m or more and 150 ⁇ m or less.
  • the multilayer film according to this embodiment includes the above sealant film as a sealant layer.
  • the thickness of the multilayer film is preferably 5 ⁇ m or more and 500 ⁇ m or less, more preferably 30 ⁇ m or more and 150 ⁇ m or less.
  • the multilayer film includes, for example, packaging applications for foods, textiles, miscellaneous goods, and the like.
  • the multilayer film is preferably a multilayer film used for retort food packaging.
  • the multilayer film may also be used as a material for forming packaging bags.
  • the multilayer film can be produced by laminating the sealant film as a sealant layer with a base layer.
  • Examples of the method for laminating the base material layer and the sealant layer include known film manufacturing methods such as the T-die method and the tubular method, with the T-die method being preferred.
  • the method for producing a sealant film according to the present embodiment includes a melt-kneading step of melt-kneading the resin composition for sealant film, an extrusion step of extruding the melt-kneaded composition, and a step of extruding the extruded composition to a thickness of 5 ⁇ m or more.
  • a film forming step of forming a film to a thickness of 200 ⁇ m or less is included.
  • the propylene polymer (1), the propylene copolymer (2), the ⁇ -crystal nucleating agent, and if necessary, the propylene copolymer (3) and the ethylene copolymer The mixture, additives and other resins are melt-kneaded.
  • a propylene multistage polymer obtained by polymerization in multiple stages may be used as the propylene polymer (1) and the propylene copolymer (2).
  • the melt-kneading can be carried out using conventionally known methods and equipment.
  • the above-mentioned materials may be mixed using a mixing device such as a Henschel mixer, a ribbon blender, or a tumble mixer, and then melt-kneaded.
  • a mixing device such as a Henschel mixer, a ribbon blender, or a tumble mixer
  • melt-kneaded after obtaining a homogeneous mixture by continuously feeding each of the above materials at a fixed rate using a quantitative feeder, the mixture is transferred to a single screw or two or more screw extruder, a Banbury mixer, etc. , a method of melt-kneading using a roll-type kneader or the like.
  • the resin temperature during melt-kneading is preferably 190°C or higher and 320°C or lower, more preferably 210°C or higher and 280°C or lower.
  • the melt-kneaded composition is extruded from a T-die using an extruder.
  • the extrusion temperature can be, for example, 190°C or higher and 320°C or lower. Note that the extrusion temperature is the temperature of the T-die itself.
  • the composition extruded from a T-die is cooled and solidified while being wound up with a chill roll to form a film to a predetermined thickness.
  • the cooling temperature can be, for example, 20° C. or higher and 140° C. or lower.
  • the resin composition for sealant film, the sealant film, the multilayer film, and the method for manufacturing the sealant film according to the present embodiment are not limited to the above embodiments, and various methods may be used without departing from the gist of the present invention. can be changed.
  • the content of structural units derived from ethylene contained in the propylene-ethylene copolymer was measured by 13 C-NMR.
  • the propylene polymer composition was determined.
  • the content of the propylene-ethylene copolymer contained and the content of structural units derived from ethylene contained in the propylene-ethylene copolymer in the propylene-based polymer composition were determined.
  • the content of structural units derived from ethylene contained in the ethylene copolymer was measured by 13 C-NMR. Specifically, based on the 13 C-NMR spectrum of the ethylene polymer composition measured under the following conditions, the ethylene copolymer composition was determined based on Randall's method (Rev. Macromol. The content of structural units derived from ethylene contained in the coalescence was determined.
  • a sample was prepared by uniformly dissolving approximately 250 mg of the propylene polymer composition or ethylene polymer composition in 2.5 mL of solvent in a 10 mm ⁇ test tube, and the 13 C-NMR spectrum of the sample was measured under the following conditions. Measured below.
  • melt flow rate (MFR, unit: g/10 minutes) The melt flow rate was measured at a temperature of 230° C. or 190° C. and a load of 2.16 kg according to method A specified in JIS K7210-1.
  • Heat seal strength (unit: N/15mm) A multilayer film was used in which a sealant film, a 7 ⁇ m thick aluminum foil, and a 12 ⁇ m thick polyethylene terephthalate film were laminated in the stated order by a dry lamination method. Using a heat sealer manufactured by Toyo Tester Kogyo Co., Ltd., fold the multilayer film in half with the sealant film on the inside, and then fold the ends opposite the folded position in the direction in which the folded position extends under the following conditions. It was heat-sealed in a strip along the .
  • ⁇ Seal bar Double-sided flat surface heating ⁇ Seal temperature: 170°C ⁇ Seal pressure: 1.0kg/ cm2 ⁇ Sealing time: 1.0sec ⁇ Seal width: 10mm Then, a test piece with a width of 15 mm was cut out in a direction perpendicular to the seal width direction, and heat treated in an oven at 120° C. for 30 minutes. Thereafter, the heat seal strength of the test piece was measured using a tensile tester (Tensilon manufactured by Orientec) under conditions of a peel angle of 90° and a tensile speed of 200 mm/min.
  • a tensile tester Teensilon manufactured by Orientec
  • Retort fusion resistance evaluation (unit: N/12cm 2 ) After the measurement surfaces of two 100 mm x 30 mm sealant films were placed on top of each other, a weight of 500 g with a ground contact area of 40 mm x 30 mm was placed on the film, and the film was heat-treated in an oven at 120° C. for 30 minutes. The resulting laminate of two sealant films was left in an atmosphere at a temperature of 23° C. and a humidity of 50% for 30 minutes or more, and then the shear peeling force was measured at a tensile rate of 200 mm/min.
  • Propylene polymer composition C In the first step, propylene is polymerized in the gas phase using a Ziegler-Natta type catalyst, and in the second step, propylene and ethylene are copolymerized in the gas phase to produce propylene homopolymer C-1. and propylene-ethylene copolymer C-2 was obtained.
  • Propylene polymer composition D Using a Ziegler-Natta type catalyst, propylene is polymerized in the gas phase in the first step, and propylene and ethylene are copolymerized in the gas phase in the second step to produce propylene homopolymer D-1.
  • a propylene polymer composition D was obtained, which consisted of the following: and propylene-ethylene copolymer D-2.
  • Propylene polymer composition G Propylene and ethylene were copolymerized in the gas phase using a Ziegler-Natta type catalyst to obtain propylene-ethylene copolymer G. Based on 100 parts by mass of the obtained propylene-ethylene copolymer G, 0.05 parts by mass of calcium stearate, 0.2 parts by mass of Irganox 1010 (manufactured by BASF), and 0.05 parts by mass of Irgafos 168 (manufactured by BASF).
  • pellet-shaped propylene polymer composition G has a content of structural units derived from ethylene in the propylene-ethylene copolymer G of 5.9% by mass, and a melt flow rate measured at 230°C. It was 3.5g/10 minutes.
  • Ethylene polymer composition H As the ethylene polymer composition H, Sumikasen E FV205 (ethylene-1-hexene copolymer composition, manufactured by Sumitomo Chemical Co., Ltd.) was used. Ethylene-based polymer composition H has an ethylene-1-hexene copolymer content of 99.9% by mass, and a content of ethylene-derived structural units in the ethylene-1-hexene copolymer of 93% by mass. %, the content of structural units derived from 1-hexene was 7% by mass, the melt flow rate measured at 190° C. was 2.2 g/10 minutes, and the density was 921 kg/m 3 .
  • Example 1 Resin composition 1
  • propylene polymer composition A For 100 parts by mass of propylene polymer composition A, 0.01 part by mass of hydrotalcite (manufactured by Kyowa Chemical Industry Co., Ltd.), 0.1 part by mass of Irganox 1010 (manufactured by BASF Corporation), Irgafos 168 (manufactured by BASF Corporation) ) and 0.03 parts by mass of NU-100 ( ⁇ crystal nucleating agent, manufactured by New Japan Chemical Co., Ltd.) were mixed in a Henschel mixer, and then melt extruded to obtain pellet-shaped resin composition 1.
  • NU-100 ⁇ crystal nucleating agent, manufactured by New Japan Chemical Co., Ltd.
  • the obtained resin composition 1 has a content of propylene homopolymer A-1 of 78 parts by mass with respect to a total of 100 parts by mass of the content of polymers contained in resin composition 1, and propylene -
  • the content of ethylene copolymer A-2 is 22 parts by mass
  • the content of structural units derived from ethylene in propylene-ethylene copolymer A-2 is 34 mass%
  • the flow rate was 2.4 g/10 minutes.
  • Table 1 The results are shown in Table 1.
  • Resin composition 1 was melt-kneaded at a resin temperature of 280° C. using a 50 mm T-die film forming device (V-50-F600 type film forming device manufactured by Tanabe Plastics Co., Ltd., equipped with a 400 mm width T-die) and extruded from the T-die. .
  • the mixture was cooled and solidified while being wound around a chill roll having a cooling temperature of 80° C. to obtain a sealant film having a thickness of 70 ⁇ m.
  • Retort fusion resistance was evaluated using the obtained sealant film.
  • a heat seal strength evaluation was performed on a multilayer film produced using the obtained sealant film. The results are shown in Table 2.
  • Example 2 Resin composition 2
  • propylene polymer composition A For 100 parts by mass of propylene polymer composition A, 0.01 part by mass of hydrotalcite (manufactured by Kyowa Chemical Industry Co., Ltd.), 0.1 part by mass of Irganox 1010 (manufactured by BASF Corporation), Irgafos 168 (manufactured by BASF Corporation) ) 0.05 parts by mass and 0.1 parts by mass of NU-100 ( ⁇ crystal nucleating agent, manufactured by New Japan Chemical Co., Ltd.) were mixed in a Henschel mixer, and then melt extruded to obtain pellet-shaped resin composition 2.
  • NU-100 ⁇ crystal nucleating agent, manufactured by New Japan Chemical Co., Ltd.
  • the resulting resin composition 2 has a propylene homopolymer A-1 content of 77 parts by mass based on a total of 100 parts by mass of the polymers contained in the resin composition 2, and propylene -
  • the content of ethylene copolymer A-2 is 23 parts by mass
  • the content of structural units derived from ethylene in propylene-ethylene copolymer A-2 is 34 mass%
  • the flow rate was 2.5 g/10 minutes.
  • Table 1 The results are shown in Table 1.
  • a sealant film was produced in the same manner as in Example 1, except that Resin Composition 2 was used, and its properties were evaluated. The results are shown in Table 2.
  • Example 3 Resin composition 3
  • propylene polymer composition A For 100 parts by mass of propylene polymer composition A, 0.01 part by mass of hydrotalcite (manufactured by Kyowa Chemical Industry Co., Ltd.), 0.1 part by mass of Irganox 1010 (manufactured by BASF Corporation), Irgafos 168 (manufactured by BASF Corporation) ) and 0.2 parts by mass of NU-100 ( ⁇ crystal nucleating agent, manufactured by New Japan Chemical Co., Ltd.) were mixed in a Henschel mixer, and then melt extruded to obtain pellet-shaped resin composition 3. Ta.
  • hydrotalcite manufactured by Kyowa Chemical Industry Co., Ltd.
  • Irganox 1010 manufactured by BASF Corporation
  • Irgafos 168 manufactured by BASF Corporation
  • NU-100 ⁇ crystal nucleating agent
  • the resulting resin composition 3 has a content of propylene homopolymer A-1 of 78 parts by mass with respect to a total of 100 parts by mass of the content of polymers contained in resin composition 3, and propylene -
  • the content of ethylene copolymer A-2 is 22 parts by mass
  • the content of structural units derived from ethylene in propylene-ethylene copolymer A-2 is 34 mass%
  • the flow rate was 2.3 g/10 minutes.
  • Table 1 The results are shown in Table 1.
  • a sealant film was produced in the same manner as in Example 1, except that resin composition 3 was used, and its properties were evaluated. The results are shown in Table 2.
  • Resin composition 4 was obtained by pellet blending 50% by mass of resin composition 3 and 50% by mass of propylene polymer composition G. The results are shown in Table 1.
  • a sealant film was produced in the same manner as in Example 1, except that resin composition 4 was used, and its properties were evaluated. The results are shown in Table 2.
  • Resin composition 5 was obtained by pellet blending 80% by mass of resin composition 2 and 20% by mass of ethylene polymer composition H. The results are shown in Table 1.
  • a sealant film was produced in the same manner as in Example 1, except that resin composition 5 was used, and its properties were evaluated. The results are shown in Table 2.
  • Example 6 Resin composition 6
  • propylene polymer composition B For 100 parts by mass of propylene polymer composition B, 0.01 part by mass of hydrotalcite (manufactured by Kyowa Chemical Industry Co., Ltd.), 0.1 part by mass of Irganox 1010 (manufactured by BASF Corporation), Irgafos 168 (manufactured by BASF Corporation) ) and 0.1 part by mass of NU-100 ( ⁇ crystal nucleating agent, manufactured by New Japan Chemical Co., Ltd.) were mixed in a Henschel mixer, and then melt extruded to obtain pellet-shaped resin composition 6. Ta.
  • hydrotalcite manufactured by Kyowa Chemical Industry Co., Ltd.
  • Irganox 1010 manufactured by BASF Corporation
  • Irgafos 168 manufactured by BASF Corporation
  • NU-100 ⁇ crystal nucleating agent
  • the resulting resin composition 6 has a propylene homopolymer B-1 content of 84 parts by mass based on a total of 100 parts by mass of the polymers contained in the resin composition 6, and propylene -
  • the content of ethylene copolymer B-2 is 16 parts by mass
  • the content of structural units derived from ethylene in propylene-ethylene copolymer B-2 is 55% by mass
  • the flow rate was 22 g/10 minutes.
  • Table 1 The results are shown in Table 1.
  • a sealant film was produced in the same manner as in Example 1, except that resin composition 6 was used, and its properties were evaluated. The results are shown in Table 2.
  • Example 7 Resin composition 7
  • propylene polymer composition C For 100 parts by mass of propylene polymer composition C, 0.01 part by mass of hydrotalcite (manufactured by Kyowa Chemical Industry Co., Ltd.), 0.1 part by mass of Irganox 1010 (manufactured by BASF Corporation), Irgafos 168 (manufactured by BASF Corporation) ) and 0.1 part by mass of NU-100 ( ⁇ crystal nucleating agent, manufactured by New Japan Chemical Co., Ltd.) were mixed in a Henschel mixer, and then melt extruded to obtain pellet-shaped resin composition 7. Ta.
  • hydrotalcite manufactured by Kyowa Chemical Industry Co., Ltd.
  • Irganox 1010 manufactured by BASF Corporation
  • Irgafos 168 manufactured by BASF Corporation
  • NU-100 ⁇ crystal nucleating agent
  • the resulting resin composition 7 has a propylene homopolymer C-1 content of 80 parts by mass based on a total of 100 parts by mass of the polymers contained in the resin composition 7, and propylene -
  • the content of the ethylene copolymer C-2 is 20 parts by mass
  • the content of structural units derived from ethylene in the propylene-ethylene copolymer C-2 is 51% by mass
  • the flow rate was 6.5 g/10 minutes.
  • Table 1 The results are shown in Table 1.
  • a sealant film was produced in the same manner as in Example 1, except that resin composition 7 was used, and its properties were evaluated. The results are shown in Table 2.
  • Example 8 Resin composition 8
  • a pellet-shaped resin composition 8 was obtained.
  • the obtained resin composition 8 has a content of propylene homopolymer D-1 and a content of propylene homopolymer E based on a total of 100 parts by mass of the polymer content contained in resin composition 8.
  • the total amount is 89 parts by mass
  • the content of propylene-ethylene copolymer D-2 is 11 parts by mass
  • the content of structural units derived from ethylene in propylene-ethylene copolymer D-2 is 39 parts by mass. % by mass
  • the melt flow rate measured at 230°C was 2.7 g/10 minutes. The results are shown in Table 1.
  • a sealant film was produced in the same manner as in Example 1, except that resin composition 8 was used, and its properties were evaluated. The results are shown in Table 2.
  • Example 9 Resin composition 9
  • propylene polymer composition A For 100 parts by mass of propylene polymer composition A, 0.01 part by mass of hydrotalcite (manufactured by Kyowa Chemical Industry Co., Ltd.), 0.1 part by mass of Irganox 1010 (manufactured by BASF Corporation), Irgafos 168 (manufactured by BASF Corporation) ) and 0.03 parts by mass of TMB-5 ( ⁇ crystal nucleating agent, manufactured by Shanxi Provincial Institute of Chemical Industry) were mixed in a Henschel mixer, and then melt extruded to obtain pellet-shaped resin composition 9. Obtained.
  • hydrotalcite manufactured by Kyowa Chemical Industry Co., Ltd.
  • Irganox 1010 manufactured by BASF Corporation
  • Irgafos 168 manufactured by BASF Corporation
  • TMB-5 ⁇ crystal nucleating agent, manufactured by Shanxi Provincial Institute of Chemical Industry
  • the resulting resin composition 9 has a propylene homopolymer A-1 content of 78 parts by mass based on a total of 100 parts by mass of the polymers contained in the resin composition 9, and propylene -
  • the content of ethylene copolymer A-2 is 22 parts by mass
  • the content of structural units derived from ethylene in propylene-ethylene copolymer A-2 is 34 mass%
  • the flow rate was 2.4 g/10 minutes.
  • Table 1 The results are shown in Table 1.
  • a sealant film was produced in the same manner as in Example 1, except that resin composition 9 was used, and its properties were evaluated. The results are shown in Table 2.
  • Example 10 Resin composition 10
  • propylene polymer composition A For 100 parts by mass of propylene polymer composition A, 0.01 part by mass of hydrotalcite (manufactured by Kyowa Chemical Industry Co., Ltd.), 0.1 part by mass of Irganox 1010 (manufactured by BASF Corporation), Irgafos 168 (manufactured by BASF Corporation) ) and 0.1 part by mass of TMB-5 ( ⁇ crystal nucleating agent, manufactured by Shanxi Provincial Institute of Chemical Industry) were mixed in a Henschel mixer, and melt extrusion was performed to obtain pellet-shaped resin composition 10. Obtained.
  • hydrotalcite manufactured by Kyowa Chemical Industry Co., Ltd.
  • Irganox 1010 manufactured by BASF Corporation
  • Irgafos 168 manufactured by BASF Corporation
  • TMB-5 ⁇ crystal nucleating agent, manufactured by Shanxi Provincial Institute of Chemical Industry
  • the resulting resin composition 10 has a propylene homopolymer A-1 content of 78 parts by mass based on a total of 100 parts by mass of the polymers contained in the resin composition 10, and propylene homopolymer A-1.
  • the content of ethylene copolymer A-2 is 22 parts by mass
  • the content of structural units derived from ethylene in propylene-ethylene copolymer A-2 is 34 mass%
  • the flow rate was 2.4 g/10 minutes.
  • Table 1 The results are shown in Table 1.
  • a sealant film was produced in the same manner as in Example 1, except that Resin Composition 10 was used, and its properties were evaluated. The results are shown in Table 2.
  • Resin composition C1 For 100 parts by mass of propylene polymer composition A, 0.01 part by mass of hydrotalcite (manufactured by Kyowa Chemical Industry Co., Ltd.), 0.1 part by mass of Irganox 1010 (manufactured by BASF Corporation), Irgafos 168 (manufactured by BASF Corporation) ) 0.05 parts by mass were mixed in a Henschel mixer, and then melt extruded to obtain pellet-shaped resin composition C1.
  • hydrotalcite manufactured by Kyowa Chemical Industry Co., Ltd.
  • Irganox 1010 manufactured by BASF Corporation
  • Irgafos 168 manufactured by BASF Corporation
  • the obtained resin composition C1 has a content of propylene homopolymer A-1 of 78 parts by mass with respect to a total content of 100 parts by mass of polymers contained in the resin composition C1, and propylene -
  • the content of ethylene copolymer A-2 is 22 parts by mass
  • the content of structural units derived from ethylene in propylene-ethylene copolymer A-2 is 35% by mass
  • the flow rate was 2.3 g/10 minutes.
  • Table 1 The results are shown in Table 1.
  • a sealant film was produced in the same manner as in Example 1, except that resin composition C1 was used, and its properties were evaluated. The results are shown in Table 2.
  • a sealant film was produced in the same manner as in Example 1, except that resin composition C2 was used, and its properties were evaluated. The results are shown in Table 2.
  • a sealant film was produced in the same manner as in Example 1, except that resin composition C3 was used, and its properties were evaluated. The results are shown in Table 2.
  • the resin compositions of each example that satisfy all the constituent requirements of the present invention can provide a sealant film with relatively excellent retort fusion resistance. Further, the resin compositions of each example can provide a sealant film with excellent heat seal strength at low temperatures.
  • the resin composition of Comparative Example 1 does not contain a ⁇ -crystal nucleating agent, the retort fusion resistance and heat seal strength at low temperatures of the film obtained using the resin composition are poor. Since the resin composition of Comparative Example 2 does not contain the propylene copolymer (2) and the ⁇ -crystal nucleating agent, the retort fusion resistance of the film obtained using the resin composition and the low temperature stability are Heat seal strength is poor. Since the resin composition of Comparative Example 3 does not contain the propylene copolymer (2), the retort fusion resistance of the film obtained using the resin composition is poor.
  • the resin composition for a sealant film of the present invention can be used for a sealant film that has relatively excellent retort fusion resistance, and has high applicability for applications such as retort packaging materials equipped with the sealant film.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)

Abstract

La présente invention vise à fournir une composition de résine pour un film d'étanchéité capable de produire un film d'étanchéité ayant une résistance relativement excellente à l'adhérence de l'autoclave, un film d'étanchéité contenant ladite composition de résine pour un film d'étanchéité, un film multicouche équipé dudit film d'étanchéité, et un procédé de production d'un film d'étanchéité utilisant la composition de résine pour un film d'étanchéité. À cet effet, la composition de résine pour un film d'étanchéité selon la présente invention contient: un polymère de propylène (1) contenant au moins 98% en masse d'unités structurales dérivées du propylène; un copolymère de propylène (2) contenant entre 40% en masse et 90% en masse d'unités structurales dérivées du propylène et entre 10% en masse et 60% en masse d'unités structurales dérivées d'au moins un élément choisi dans le groupe constitué par l'éthylène et d'alpha-oléfines en C4-12; et un agent de nucléation de cristaux β.
PCT/JP2023/001862 2022-03-09 2023-01-23 Composition de résine pour film d'étanchéité, film d'étanchéité, film multicouche et procédé de production de film d'étanchéité WO2023171155A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN202380022712.0A CN118715279A (zh) 2022-03-09 2023-01-23 密封膜用树脂组合物、密封膜、多层膜以及密封膜的制造方法
JP2024505936A JPWO2023171155A1 (fr) 2022-03-09 2023-01-23

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2022-036179 2022-03-09
JP2022036179 2022-03-09

Publications (1)

Publication Number Publication Date
WO2023171155A1 true WO2023171155A1 (fr) 2023-09-14

Family

ID=87936700

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2023/001862 WO2023171155A1 (fr) 2022-03-09 2023-01-23 Composition de résine pour film d'étanchéité, film d'étanchéité, film multicouche et procédé de production de film d'étanchéité

Country Status (3)

Country Link
JP (1) JPWO2023171155A1 (fr)
CN (1) CN118715279A (fr)
WO (1) WO2023171155A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008255191A (ja) * 2007-04-03 2008-10-23 Sumitomo Chemical Co Ltd 発泡用ポリプロピレン系樹脂組成物およびそれからなる発泡成形体
JP2013209635A (ja) * 2012-02-28 2013-10-10 Sumitomo Chemical Co Ltd ポリプロピレン系樹脂、それからなるフィルムおよびポリプロピレン系樹脂の製造方法
JP2015203065A (ja) * 2014-04-14 2015-11-16 日本ポリプロ株式会社 プロピレン系樹脂組成物からなる熱成形体
JP2017036386A (ja) * 2015-08-10 2017-02-16 日本ポリプロ株式会社 ポリプロピレン系樹脂組成物を変形回復性構造体に用いる方法及び変形回復性構造体

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008255191A (ja) * 2007-04-03 2008-10-23 Sumitomo Chemical Co Ltd 発泡用ポリプロピレン系樹脂組成物およびそれからなる発泡成形体
JP2013209635A (ja) * 2012-02-28 2013-10-10 Sumitomo Chemical Co Ltd ポリプロピレン系樹脂、それからなるフィルムおよびポリプロピレン系樹脂の製造方法
JP2015203065A (ja) * 2014-04-14 2015-11-16 日本ポリプロ株式会社 プロピレン系樹脂組成物からなる熱成形体
JP2017036386A (ja) * 2015-08-10 2017-02-16 日本ポリプロ株式会社 ポリプロピレン系樹脂組成物を変形回復性構造体に用いる方法及び変形回復性構造体

Also Published As

Publication number Publication date
CN118715279A (zh) 2024-09-27
JPWO2023171155A1 (fr) 2023-09-14

Similar Documents

Publication Publication Date Title
JP5063357B2 (ja) 熱融着性プロピレン系重合体組成物、熱融着性フィルム及びその用途
JPWO2007015415A1 (ja) ポリプロピレン樹脂組成物、フィルムまたはシート、該フィルムまたはシートから得られる延伸フィルム、積層体および該積層体から得られる延伸フィルム
JP2013112736A (ja) プロピレン系重合体組成物、及び、その用途
WO2013080854A1 (fr) Composition de polymère à base de propylène, film étiré de manière bi-axiale et leur utilisation
JPWO2018180165A1 (ja) 電池用積層体
JP5227031B2 (ja) ポリプロピレン系単層フィルムおよびその用途
WO2023171155A1 (fr) Composition de résine pour film d'étanchéité, film d'étanchéité, film multicouche et procédé de production de film d'étanchéité
JP4892784B2 (ja) レトルト包装用多層フィルム
US20090292077A1 (en) Polypropylene-based resin composition and film
JP6798268B2 (ja) 多層フィルム
US9127133B2 (en) Polypropylene-based resin composition and film
CN105034506A (zh) 层叠膜
JP5786608B2 (ja) 積層フィルム
KR20240157635A (ko) 실란트 필름용 수지 조성물, 실란트 필름, 다층 필름, 및 실란트 필름의 제조 방법
JP7496304B2 (ja) 多層フィルム、および、包装袋
JP4495602B2 (ja) 二軸延伸ポリプロピレン多層フィルム
CN102380992A (zh) 层叠体
JP4239067B2 (ja) 積層ポリプロピレン系樹脂フイルム及びそれを用いた包装体
JP4872344B2 (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
JP2021042329A (ja) 易引裂性フィルム用樹脂組成物及びそれを用いた易引裂性フィルム
JP6717641B2 (ja) 多層フィルム及びその製造法
JP5375454B2 (ja) ポリプロピレン系樹脂組成物および延伸フィルム
JP4574462B2 (ja) ポリプロピレン多層延伸フィルム
JP2022149819A (ja) オレフィン系重合体組成物、および、フィルム
JP2024143485A (ja) 積層フィルム、および、レトルトパウチ

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: 23766335

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 2024505936

Country of ref document: JP

Kind code of ref document: A

WWE Wipo information: entry into national phase

Ref document number: 202380022712.0

Country of ref document: CN