WO2022149423A1 - シーラントフィルムおよびその用途 - Google Patents
シーラントフィルムおよびその用途 Download PDFInfo
- Publication number
- WO2022149423A1 WO2022149423A1 PCT/JP2021/046180 JP2021046180W WO2022149423A1 WO 2022149423 A1 WO2022149423 A1 WO 2022149423A1 JP 2021046180 W JP2021046180 W JP 2021046180W WO 2022149423 A1 WO2022149423 A1 WO 2022149423A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- layer
- ethylene
- sealant film
- range
- film
- Prior art date
Links
- 239000000565 sealant Substances 0.000 title claims abstract description 97
- 239000010410 layer Substances 0.000 claims abstract description 167
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims abstract description 98
- 239000005977 Ethylene Substances 0.000 claims abstract description 98
- 229920001577 copolymer Polymers 0.000 claims abstract description 51
- 239000004711 α-olefin Substances 0.000 claims abstract description 29
- 229920000573 polyethylene Polymers 0.000 claims abstract description 23
- 238000004806 packaging method and process Methods 0.000 claims abstract description 21
- 239000000155 melt Substances 0.000 claims abstract description 16
- 235000013599 spices Nutrition 0.000 claims abstract description 10
- 239000002356 single layer Substances 0.000 claims abstract description 5
- 239000002344 surface layer Substances 0.000 claims abstract description 5
- 229920000642 polymer Polymers 0.000 claims description 77
- 239000000463 material Substances 0.000 claims description 36
- 238000002844 melting Methods 0.000 claims description 22
- 230000008018 melting Effects 0.000 claims description 19
- 229920005989 resin Polymers 0.000 claims description 17
- 239000011347 resin Substances 0.000 claims description 17
- 125000004432 carbon atom Chemical group C* 0.000 claims description 15
- 238000010030 laminating Methods 0.000 claims description 14
- 238000001938 differential scanning calorimetry curve Methods 0.000 claims description 8
- 238000001125 extrusion Methods 0.000 claims description 8
- 238000004804 winding Methods 0.000 claims description 4
- 239000004615 ingredient Substances 0.000 claims description 2
- 239000003921 oil Substances 0.000 abstract description 24
- 235000014593 oils and fats Nutrition 0.000 abstract description 12
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 3
- 229910052799 carbon Inorganic materials 0.000 abstract description 3
- 239000010408 film Substances 0.000 description 121
- 238000000034 method Methods 0.000 description 46
- 238000000465 moulding Methods 0.000 description 17
- 239000007788 liquid Substances 0.000 description 14
- 239000000203 mixture Substances 0.000 description 14
- 238000011156 evaluation Methods 0.000 description 13
- 229920006280 packaging film Polymers 0.000 description 13
- 239000012785 packaging film Substances 0.000 description 13
- 229920001684 low density polyethylene Polymers 0.000 description 12
- 239000004702 low-density polyethylene Substances 0.000 description 12
- 238000007789 sealing Methods 0.000 description 12
- LIKMAJRDDDTEIG-UHFFFAOYSA-N n-hexene Natural products CCCCC=C LIKMAJRDDDTEIG-UHFFFAOYSA-N 0.000 description 11
- 239000000853 adhesive Substances 0.000 description 10
- 230000001070 adhesive effect Effects 0.000 description 10
- -1 aluminum compound Chemical class 0.000 description 10
- 229920001519 homopolymer Polymers 0.000 description 9
- 239000005022 packaging material Substances 0.000 description 9
- 238000006116 polymerization reaction Methods 0.000 description 9
- VXNZUUAINFGPBY-UHFFFAOYSA-N 1-Butene Chemical compound CCC=C VXNZUUAINFGPBY-UHFFFAOYSA-N 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 8
- 238000007740 vapor deposition Methods 0.000 description 8
- 229920000089 Cyclic olefin copolymer Polymers 0.000 description 7
- 239000011248 coating agent Substances 0.000 description 7
- 239000012948 isocyanate Substances 0.000 description 7
- 229910052751 metal Inorganic materials 0.000 description 7
- 239000002184 metal Substances 0.000 description 7
- 239000003054 catalyst Substances 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 5
- 239000012808 vapor phase Substances 0.000 description 5
- ZGEGCLOFRBLKSE-UHFFFAOYSA-N 1-Heptene Chemical compound CCCCCC=C ZGEGCLOFRBLKSE-UHFFFAOYSA-N 0.000 description 4
- AFFLGGQVNFXPEV-UHFFFAOYSA-N 1-decene Chemical compound CCCCCCCCC=C AFFLGGQVNFXPEV-UHFFFAOYSA-N 0.000 description 4
- KWKAKUADMBZCLK-UHFFFAOYSA-N 1-octene Chemical compound CCCCCCC=C KWKAKUADMBZCLK-UHFFFAOYSA-N 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 239000011888 foil Substances 0.000 description 4
- 235000013305 food Nutrition 0.000 description 4
- 150000002513 isocyanates Chemical class 0.000 description 4
- YWAKXRMUMFPDSH-UHFFFAOYSA-N pentene Chemical compound CCCC=C YWAKXRMUMFPDSH-UHFFFAOYSA-N 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 229920005992 thermoplastic resin Polymers 0.000 description 4
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 3
- 150000001336 alkenes Chemical class 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- 239000000919 ceramic Substances 0.000 description 3
- 239000007795 chemical reaction product Substances 0.000 description 3
- 238000003851 corona treatment Methods 0.000 description 3
- 239000003814 drug Substances 0.000 description 3
- 239000012793 heat-sealing layer Substances 0.000 description 3
- 229910044991 metal oxide Inorganic materials 0.000 description 3
- 150000004706 metal oxides Chemical class 0.000 description 3
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 3
- 229920000728 polyester Polymers 0.000 description 3
- 229920005862 polyol Polymers 0.000 description 3
- 150000003077 polyols Chemical class 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- WSSSPWUEQFSQQG-UHFFFAOYSA-N 4-methyl-1-pentene Chemical compound CC(C)CC=C WSSSPWUEQFSQQG-UHFFFAOYSA-N 0.000 description 2
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 230000004913 activation Effects 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 229920001903 high density polyethylene Polymers 0.000 description 2
- 239000004700 high-density polyethylene Substances 0.000 description 2
- 229920001179 medium density polyethylene Polymers 0.000 description 2
- 239000004701 medium-density polyethylene Substances 0.000 description 2
- 239000012968 metallocene catalyst Substances 0.000 description 2
- TVMXDCGIABBOFY-UHFFFAOYSA-N n-Octanol Natural products CCCCCCCC TVMXDCGIABBOFY-UHFFFAOYSA-N 0.000 description 2
- 238000009832 plasma treatment Methods 0.000 description 2
- 229920013716 polyethylene resin Polymers 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 2
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 2
- 229910052814 silicon oxide Inorganic materials 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000011345 viscous material Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- RTTZISZSHSCFRH-UHFFFAOYSA-N 1,3-bis(isocyanatomethyl)benzene Chemical compound O=C=NCC1=CC=CC(CN=C=O)=C1 RTTZISZSHSCFRH-UHFFFAOYSA-N 0.000 description 1
- ZZLCFHIKESPLTH-UHFFFAOYSA-N 4-Methylbiphenyl Chemical compound C1=CC(C)=CC=C1C1=CC=CC=C1 ZZLCFHIKESPLTH-UHFFFAOYSA-N 0.000 description 1
- 239000004925 Acrylic resin Substances 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- JHWNWJKBPDFINM-UHFFFAOYSA-N Laurolactam Chemical compound O=C1CCCCCCCCCCCN1 JHWNWJKBPDFINM-UHFFFAOYSA-N 0.000 description 1
- 229920010126 Linear Low Density Polyethylene (LLDPE) Polymers 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 229920000571 Nylon 11 Polymers 0.000 description 1
- 229920000299 Nylon 12 Polymers 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 229920001328 Polyvinylidene chloride Polymers 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- IAQRGUVFOMOMEM-UHFFFAOYSA-N butene Natural products CC=CC IAQRGUVFOMOMEM-UHFFFAOYSA-N 0.000 description 1
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 125000000058 cyclopentadienyl group Chemical group C1(=CC=CC1)* 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000032798 delamination Effects 0.000 description 1
- 239000003599 detergent Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 239000003925 fat Substances 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000010436 fluorite Substances 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 229910052809 inorganic oxide Inorganic materials 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 238000007733 ion plating Methods 0.000 description 1
- 150000008040 ionic compounds Chemical class 0.000 description 1
- 239000003446 ligand Substances 0.000 description 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 239000012803 melt mixture Substances 0.000 description 1
- 229910001512 metal fluoride Inorganic materials 0.000 description 1
- 229910000000 metal hydroxide Inorganic materials 0.000 description 1
- 150000004692 metal hydroxides Chemical class 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 229920006281 multilayer packaging film Polymers 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 229920006284 nylon film Polymers 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 239000000575 pesticide Substances 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920006122 polyamide resin Polymers 0.000 description 1
- 229920001707 polybutylene terephthalate Polymers 0.000 description 1
- 229920005668 polycarbonate resin Polymers 0.000 description 1
- 239000004431 polycarbonate resin Substances 0.000 description 1
- 229920006267 polyester film Polymers 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
- 229920005638 polyethylene monopolymer Polymers 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 239000002685 polymerization catalyst Substances 0.000 description 1
- 229920005672 polyolefin resin Polymers 0.000 description 1
- 229920005990 polystyrene resin Polymers 0.000 description 1
- 239000005033 polyvinylidene chloride Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000011342 resin composition Substances 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- LMDVZDMBPZVAIV-UHFFFAOYSA-N selenium hexafluoride Chemical compound F[Se](F)(F)(F)(F)F LMDVZDMBPZVAIV-UHFFFAOYSA-N 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 description 1
- 229910001887 tin oxide Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 150000003623 transition metal compounds Chemical class 0.000 description 1
- 239000000052 vinegar Substances 0.000 description 1
- 235000021419 vinegar Nutrition 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Classifications
-
- 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
- B65D31/00—Bags or like containers made of paper and having structural provision for thickness of contents
- B65D31/02—Bags or like containers made of paper and having structural provision for thickness of contents with laminated walls
-
- 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
- B32B27/16—Layered products comprising a layer of synthetic resin specially treated, e.g. irradiated
-
- 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
- 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
- B32B2255/00—Coating on the layer surface
- B32B2255/10—Coating on the layer surface on synthetic resin layer or on natural or synthetic rubber layer
-
- 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
- B32B2255/00—Coating on the layer surface
- B32B2255/26—Polymeric coating
-
- 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
- B32B2270/00—Resin or rubber layer containing a blend of at least two different 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
- B32B2307/00—Properties of the layers or laminate
- B32B2307/30—Properties of the layers or laminate having particular thermal 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
- 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
- B32B2307/514—Oriented
- B32B2307/518—Oriented bi-axially
-
- 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
- B32B2307/72—Density
-
- 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
- B32B2307/726—Permeability to liquids, absorption
- B32B2307/7265—Non-permeable
-
- 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
Definitions
- the present invention relates to a sealant film suitable for a heat-sealing layer of a package, a laminate having the sealant film, and its use thereof. More specifically, the present invention has excellent durability (oil resistance) against oils and fats having components extracted from spices. The present invention relates to a sealant film having (gender) and its use.
- a multilayer packaging film composed of a laminated body in which a sealant layer is laminated on a base material via a laminated layer or an intermediate layer is used, and the sealant layer is used.
- a liquid packaging bag is known in which a liquid or the like is filled from the opening of a bag-shaped object on the inside and the opening is closed by a heat seal.
- the packaging bag is often made by heat-sealing the film on three or four sides, and when the liquid or the like is filled at high speed, the liquid may leak from the heat-sealed part. Therefore, a laminate for a packaging bag having improved high-speed filling property has been proposed.
- Patent Documents 1 to 3 describe a specific material having a high viscosity at a low shear rate and a low viscosity at a high shear rate, that is, an actual material, when used as a packaging bag for a liquid or a viscous body in an automatic filling machine.
- a method of using a resin composition in which the ratio of a high shear rate to a low shear rate measured at a temperature close to the time of filling is in a specific range is disclosed.
- a specific example in which a composition of an ethylene / 1-hexene copolymer and high-pressure low-density polyethylene is used in the intermediate layer between the base material and the sealant layer is disclosed.
- Patent Document 4 describes a sealant layer (B) containing an ethylene / ⁇ -olefin copolymer having a density in the range of 890 to 910 kg / m 3 and having a specific heat of fusion, and the sealant layer (B).
- a laminated body in which a contacting intermediate layer (C) is laminated is proposed.
- the packaged material containing oils and fats especially the packaged material containing oils and fats having components extracted from spices, is packaged, the oil resistance is insufficient when any laminate is used as the packaging material. It turned out to be.
- the present invention relates to a sealant film having sufficient durability (oil resistance) practically required for filling, packaging, storing, transporting, etc., oils and fats, particularly oils and fats having components extracted from spices.
- An object of the present invention is to provide a packaging bag made of the film.
- the present invention includes the following aspects [1] to [14].
- [1] A single-layer or multi-layered sealant film composed of an ethylene-based polymer, wherein the surface layer of the sealant film has a layer made of an ethylene-based polymer (A) satisfying the following requirements (i) to (iii). Sealant film.
- the melt flow rate (MFR) at 190 ° C. under a 2.16 kg load is in the range of 0.1 to 20 g / 10 minutes.
- the content of A1) is 26% by mass or more and 100% by mass or less.
- Item 2 The sealant film according to Item [1], wherein the density of the ethylene-based polymer (A) is in the range of more than 910 kg / m 3 to 919 kg / m 3 .
- Item 3 The sealant film according to Item [1], wherein the melt flow rate (MFR) of the ethylene-based polymer (A) is in the range of more than 1.0 g / 10 minutes to 3.0 g / 10 minutes.
- MFR melt flow rate
- the heat-melting ratio (Hh) of the ethylene-based polymer (A) is the ratio of the total heat of melting (Ht) obtained from the DSC curve measured by DSC to the heat of melting (Hh) obtained from the DSC curve at 120 ° C. or higher.
- Item 2 The sealant film according to Item [1], wherein the sealant film is composed of two layers, a laminated layer and a heat-sealing layer, and at least the heat-sealing layer is a layer made of an ethylene-based polymer (A).
- Item 2 The sealant film according to Item [6], wherein the laminated layer is a layer made of an ethylene-based polymer (C) that satisfies the following requirements (a) and (b).
- the density is in the range of 900 to 940 kg / m 3 .
- the melt flow rate (MFR) measured under the conditions of 190 ° C. and 2.16 kg load according to JIS K7210-1 is in the range of 0.01 to 20 g / 10 minutes.
- Item 2 The sealant film according to Item [1], wherein the sealant film is composed of at least three layers of a laminate layer, an intermediate layer and a heat seal layer, and at least the heat seal layer is a layer composed of an ethylene polymer (A).
- Item 2 The sealant film according to Item [8], wherein the laminated layer is a layer made of an ethylene-based polymer (C) that satisfies the following requirements (a) and (b).
- the density is in the range of 900 to 940 kg / m 3 .
- the melt flow rate (MFR) measured under the conditions of 190 ° C. and 2.16 kg load according to JIS K7210-1 is in the range of 0.01 to 20 g / 10 minutes.
- Item 2 The sealant film according to Item [8], wherein the intermediate layer is a layer made of an ethylene-based polymer (C) that satisfies the following requirements (a) and (b).
- the density is in the range of 900 to 940 kg / m 3 .
- the melt flow rate (MFR) measured under the conditions of 190 ° C. and 2.16 kg load according to JIS K7210-1 is in the range of 0.01 to 20 g / 10 minutes.
- a packaging bag formed from the laminate according to item [11] or item [12] and having a sealant film as an inner surface.
- Item 3 The packaging bag according to Item [13], wherein the content contains an ingredient derived from a spice.
- the sealant film of the present invention has sufficient durability (oil resistance) required for practical use when it is filled and packaged with oils and fats, especially oils and fats having components extracted from spices, and stored and transported. Therefore, it is particularly suitable for packaging materials, and the packaging using the sealant film of the present invention has excellent durability and can be stored in a higher temperature environment or for a longer period of time (according to Arenius's law). Is possible.
- the ethylene-based polymer (A) forming the surface layer of the sealant film of the present invention (hereinafter, also referred to as “heat seal layer, laminated layer”) is an ethylene-based polymer that satisfies the following requirements (i) to (iii). Is.
- the indication of 0 to 2 includes 0 and includes 1 and 2.
- the density is more than 910 kg / m 3 to less than 940 kg / m 3 , preferably more than 910 kg / m 3 to 930 kg / m 3 , more preferably more than 910 kg / m 3 to 920 kg / m 3 , most preferably more than 910 kg / m 3 . It is in the range of ⁇ 919 kg / m 3 .
- the melt flow rate (MFR) at 190 ° C. under a 2.16 kg load is 0.1 to 20 g / 10 minutes, preferably 0.3 to 15 g / 10 minutes, more preferably 0.5. It is in the range of about 10 g / 10 minutes, more preferably 0.5 to 5 g / 10 minutes, and most preferably more than 1.0 g / 10 minutes to 3.0 g / 10 minutes.
- the ethylene-based polymer (A) contains 0 to 50% by mass, preferably 0 to 40% by mass, and more preferably 0 to 0 to 50% by mass, preferably 0 to 40% by mass, of the copolymer (A2) of ethylene and ⁇ -olefin having 4 or less carbon atoms.
- the content of the copolymer (A1) of ethylene and ⁇ -olefin having 5 or more carbon atoms is in the range of 26 to 100% by mass, preferably 30 to 100%.
- the mass is in the range of 50 to 100% by mass, more preferably 75 to 100% by mass, and the total amount of the copolymer (A2) and the copolymer (A1) is 100% by mass.
- the ethylene-based polymer (A) according to the present invention may contain the ethylene polymer (A3) described later in addition to the above-mentioned copolymer (A2) and the copolymer (A1).
- the ethylene-based polymer (A) according to the present invention contains an ethylene polymer (A3) in addition to the above-mentioned copolymer (A2) and the above-mentioned copolymer (A1), the copolymer (A2) is co-polymerized.
- the total amount of the polymer (A1) and the ethylene polymer (A3) is 100% by mass.
- the ethylene polymer (A) according to the present invention preferably has the following requirement (iv) in addition to the above requirements (i) to (iii). ⁇ Requirements (iv)>
- the ethylene polymer (A) is extruded from an orifice with a resin temperature of 190 ° C., a melting time of 6 minutes, a nozzle diameter of 2.095 mm ⁇ , a nozzle length of 8 mm, and a winding speed of 15 mm / min, and a winding speed of 15 m / min.
- the molten resin can be wound without breaking under the condition of minutes, and the melting tension (mN), which is the resistance force generated at that time, satisfies the following formula.
- the ethylene-based polymer (A) according to the present invention preferably has the following requirements (v) in the above requirements (i) to (iv).
- the heat of melting ratio (Hh / Ht) which is the ratio of the total heat of melting (Ht) obtained from the DSC curve of DSC measurement to the heat of melting (Hh) obtained from the DSC curve at 120 ° C. or higher, is less than 10.
- the heat-melting ratio (Hh / Ht) of the ethylene-based polymer (A) in the present invention is the total heat of melting (Ht) obtained from the DSC curve measured by DSC and the heat of melting (Hh / Ht) obtained from the DSC curve at 120 ° C. or higher. From Hh), it was calculated and obtained as a melting heat quantity ratio (Hh / Ht) of 120 ° C. or higher, which is a ratio indicating the component amount of 120 ° C. or higher.
- ⁇ Ethylene / ⁇ -olefin copolymer (A1) One of the polymers contained in the ethylene-based polymer (A) according to the present invention, the ethylene / ⁇ -olefin copolymer (A1) [hereinafter, may be abbreviated as "copolymer (A1)". ] Is a copolymer of ethylene and an ⁇ -olefin having 5 or more carbon atoms, and the copolymer (A1) is a mixture (composition) of one kind or two or more kinds of copolymers (A1). You may.
- the mixture (composition) of two or more kinds of copolymers (A1) is a mixture of two or more kinds of copolymers (A1) in a polymerization step by various known methods, for example, a multi-step process, and two or more kinds of copolymers.
- a dry blend of the polymer (A1), a melt mixture by an extruder, or the like can be adopted.
- the ⁇ -olefin having 5 or more carbon atoms constituting the copolymer (A1) according to the present invention is preferably an ⁇ -olefin having 5 to 20 carbon atoms, and is 1-hexene, 1-pentene, 4-methyl-1. -Pentene, 1-heptene, 1-octene and 1-decene.
- ⁇ -olefins having 5 to 10 carbon atoms are particularly preferable. These may contain one kind of ⁇ -olefin alone or may contain two or more kinds of ⁇ -olefins.
- the ethylene / ⁇ -olefin copolymer (A2) [hereinafter, may be abbreviated as "copolymer (A2)". ] Is a copolymer of ethylene and an ⁇ -olefin having 4 or less carbon atoms.
- the ⁇ -olefins having 4 or less carbon atoms constituting the copolymer (A2) are propylene and 1-butene.
- the ethylene-based polymer (A) containing the copolymer (A2) and the above-mentioned copolymer (A1) is the above-mentioned requirements (i) to (iii), preferably.
- the density and MFR are not particularly limited, but usually the density is more than 910 kg / m 3 to less than 940 kg / m 3 , preferably 915 to less than 940 kg / m 3 .
- It is preferably in the range of 920 to 930 kg / m 3 , and usually has an MFR of 0.1 to 20 g / 10 minutes, preferably 0.3 to 15 g / 10 minutes, more preferably 0.5 to 10 g / 10 minutes, still more preferably. Is in the range of 0.5-5 g / 10 minutes.
- Ethylene polymer (A3) Examples of the ethylene polymer (A3) other than the above-mentioned copolymer (A2) and the copolymer (A1) which may be contained in the ethylene-based polymer (A) according to the present invention are ethylene homopolymers. , High pressure method low density polyethylene (HP-LDPE) and the like.
- HP-LDPE High pressure method low density polyethylene
- the copolymer (A3) according to the present invention is an ethylene-based polymer (A) containing the copolymer (A3), the above-mentioned copolymer (A1) and the above-mentioned copolymer (A2), and the above-mentioned requirement (i). )-(Iii), preferably the density and MFR are not particularly limited as long as the above requirements (i)-(v) are satisfied, but the density is usually 900 to 940 kg / m 3 , preferably 910 to 930 kg / m 3 .
- the ethylene / ⁇ -olefin copolymer (A1) according to the present invention can be prepared by using a catalyst for olefin polymerization such as metallocene-based, titanium-based, chromium-based or phenoxyimine-based.
- the copolymer (A1) may be linear or branched low-density polyethylene.
- a catalyst for metallocene-based olefin polymerization a polymer having a narrow molecular weight distribution can be obtained, so that low molecular weight and low density components are less likely to be produced. It is effective for applications, that is, for packaging materials to be packaged such as foods and pharmaceuticals.
- the metallocene-based catalyst usually has a metallocene catalyst component (a1), an organic aluminumoxy compound catalyst component (b), which is composed of a transition metal compound of Group IVB of the periodic table having at least one ligand having a cyclopentadienyl skeleton. It is formed from a fine particle carrier (c), and if necessary, an organic aluminum compound catalyst component (d) and an ionized ionic compound catalyst component (e).
- the copolymer (A1) according to the present invention is described in, for example, JP-A-6-9724, JP-A-6-136195, JP-A-6-136196, JP-A-6-207057 and the like. It can be produced by copolymerizing ethylene with an ⁇ -olefin having 5 or more carbon atoms in the presence of a so-called metallocene-based olefin polymerization catalyst containing a metallocene catalyst component.
- the sealant film of the present invention is a single-layer or multi-layer sealant film made of an ethylene-based polymer, and is a film having a layer made of the ethylene-based polymer (A) on the surface layer of the sealant film. ..
- the sealant film of the present invention is a film having a laminated surface laminated with a base material layer described later and a heat-sealing surface capable of heat-sealing (sealanting) the material to be packaged. Since the sealant film of the present invention has excellent heat-sealing properties (heat-sealing properties) and also has oil resistance, particularly oil resistance to fats and oils having components extracted from spices, the sealant layer of the packaging material, particularly the packaging material. Can be suitably used as.
- the sealant film of the present invention is a single layer
- the sealant film is made of the above ethylene polymer (A).
- the thickness of the sealant film can be appropriately selected depending on the type of the material to be packaged, but is usually in the range of 5 to 100 ⁇ m.
- the sealant film of the present invention is a multilayer film, it is composed of a layer to be laminated (bonded) with a substrate layer described later (hereinafter, may be referred to as a "laminate layer") and a heat seal layer, and at least.
- the heat seal layer is made of the above ethylene-based polymer (A).
- the thickness of the film can be appropriately selected depending on the type of the material to be packaged, but is usually the thickness of the laminate layer.
- the thickness of the heat seal layer is in the range of 1 to 50 ⁇ m, preferably 5 to 30 ⁇ m
- the thickness of the heat seal layer is in the range of 1 to 50 ⁇ m, preferably 5 to 30 ⁇ m
- the thickness of the entire layer is in the range of 5 to 100 ⁇ m.
- the sealant film of the present invention is a multilayer film having three or more layers, it is composed of a laminate layer, an intermediate layer and a heat seal layer, and at least the heat seal layer is made of the above ethylene polymer (A).
- the thickness of the film can be appropriately selected depending on the type of the material to be packaged.
- the thickness of the laminated layer is in the range of 1 to 50 ⁇ m, preferably 5 to 30 ⁇ m
- the thickness of the intermediate layer is in the range of 1 to 50 ⁇ m, preferably 5 to 30 ⁇ m, 1 to 50 ⁇ m, preferably 5 to 30 ⁇ m.
- the range, and the thickness of all layers, is in the range of 5-100 ⁇ m.
- the sealant film of the present invention is a two-layer film having a laminate layer and a heat seal layer, or a multilayer film having three or more layers having a laminate layer, an intermediate layer and a heat seal layer, at least the heat seal layer is the above. It is a layer made of an ethylene-based polymer (A).
- all layers may be a layer made of the above ethylene-based polymer (A), and in that case, all layers are layers made of the same ethylene-based polymer (A). It may be a layer made of different ethylene-based polymers (A).
- the sealant film of the present invention is a two-layer film having a laminate layer and a heat seal layer, or a multilayer film having three or more layers having a laminate layer, an intermediate layer and a heat seal layer, the laminate layer or the intermediate layer is described above. It may be a layer made of an ethylene polymer other than the ethylene polymer (A).
- the polymer forming the layer is the ethylene-based polymer (C). Is preferable.
- the ethylene-based polymer (C) which may form a partial layer thereof, preferably a laminated layer and an intermediate layer is a polyethylene homopolymer or a polyethylene and carbon number. It is a polymer with 3 or more ⁇ -olefins and is a polymer mainly composed of ethylene.
- ethylene-based polymers may be a single polymer or a composition (mixture) of two or more kinds of ethylene-based polymers.
- the ⁇ -olefin having 3 or more carbon atoms forming the ethylene-based polymer (C) according to the present invention is preferably an ⁇ -olefin having 3 to 20 carbon atoms, and examples of the ⁇ -olefin are propylene and 1-. Examples thereof include butene, 1-hexene, 1-pentene, 4-methyl-1-pentene, 1-heptene, 1-octene and 1-decene. These may be used alone or in combination of two or more.
- the ethylene-based polymer (C) according to the present invention is not particularly limited as long as it satisfies the object of the present invention.
- the density and MFR satisfy the following requirements (a) and (b).
- the density is in the range of 900 to 940 kg / m 3 , preferably 910 to 930 kg / m 3 , and more preferably 920 to 930 kg / m 3 .
- the melt flow rate (MFR) measured under the conditions of 190 ° C. and 2.16 kg load according to JIS K7210-1 is 0.01 to 20 g / 10 minutes, preferably 0.05 to 20 g / 10 minutes. , More preferably in the range of 0.1-5 g / 10 min.
- the sealant film of the present invention may be any known film manufacturing method (molding method), for example, a casting method using a flat die such as a T-die, or an inflation method using a circular die.
- the sealant film is a two-layer film
- the above-mentioned ethylene-based polymer (A) forming a laminate layer and the above-mentioned ethylene-based polymer (A) forming a heat-sealed layer are individually melted by two extruders.
- the so-called coextrusion molding method of forming a two-layer film from one die, and in the case of a three-layer or more multilayer film, the above-mentioned ethylene-based polymer (A) for forming a laminate layer with three or more extruders is used as an intermediate.
- the above-mentioned ethylene-based polymer (A) forming a layer and the above-mentioned ethylene-based polymer (A) forming a heat-sealed layer are individually melted to form a so-called multilayer film having three or more layers from one die. It can be manufactured by the coextrusion molding method. Above all, the coextrusion molding method is preferable because the multilayer film can be easily molded and the obtained multilayer film is also excellent in interlayer adhesion.
- the coextrusion molding method may be either a casting method using a flat die such as a T-die or an inflation method using a circular die.
- the two or more layers of the sealant film of the present invention are not limited to the above-mentioned production method.
- a method of extruding and laminating the ethylene-based copolymer (A) can also be adopted.
- the molding temperature of the sealant film is not particularly limited as long as it can melt-extrude the ethylene polymer (A) or the like, but is usually in the range of 130 to 350 ° C, preferably 160 to 250 ° C.
- the laminate of the present invention is a laminate in which the base material layer and the sealant film are laminated, and is usually in the form of a film or a sheet.
- the laminate of the present invention is a laminate in which a base material layer and the sealant film are laminated, and since the sealant film has heat-sealing properties (heat-sealing properties), it can be suitably used as a packaging material.
- the packaged material that can be packaged with the packaging material of the present invention is not limited to foods and pharmaceuticals, but includes various articles that can be packaged such as daily necessities, detergents, and pesticides.
- the form of the packaged material may be liquid or solid.
- the laminate of the present invention has excellent oil resistance in addition to heat-sealing properties, so that packaging of oil-based foods such as oils and fats having components extracted from spices regardless of whether they are liquids or solids. Especially suitable for materials.
- the base material layer constituting the laminate of the present invention is a material having relatively large rigidity and strength, which is one outer surface of the packaging material.
- polyamide resins such as nylon 11 and nylon 12
- polyester resins such as polyethylene terephthalate and polybutylene terephthalate
- polyolefin resins such as polyethylene resin and polypropylene resin
- polyvinylidene chloride resin and saponified ethylene-vinyl acetate copolymers.
- the film is not limited to the above film, and may be a laminate with a metal foil, a metal vapor deposition film, a ceramic vapor deposition film such as an inorganic oxide vapor deposition film, paper, a non-woven fabric, and a film containing a thermoplastic resin.
- the thickness of the substrate layer according to the present invention is usually in the range of 5 to 50 ⁇ m.
- the metal foil is not particularly limited depending on the material and thickness, and is an aluminum foil having a thickness of 5 to 50 ⁇ m, a tin foil, a lead foil, a zinc-plated thin-layer steel plate, a thin film of ionized metal by an electrolysis method, and an iron foil. Etc. are used.
- the metal vapor-deposited film is not particularly limited depending on the material, thickness, etc., and examples of the metal-deposited metal include aluminum and zinc, and those having a thickness of 0.01 to 0.2 ⁇ m are usually preferably used.
- the vapor deposition method is not particularly limited, and well-known methods such as a vacuum vapor deposition method, an ion plating method, and a sputtering method are used.
- the ceramic to be vaporized includes, for example, a silicon oxide represented by the general formula SiOx (0.5 ⁇ x ⁇ 2), and a metal oxide such as glass, alumina, magnesium oxide, and tin oxide. , Fluorite, and metal fluorides such as selenium fluoride.
- the metal oxide may contain a trace amount of metal, other metal oxides, and metal hydroxides.
- the vapor deposition can also be performed by applying the various vapor deposition methods described above to at least one side of the film.
- the film to be vapor-deposited is not particularly limited, and examples thereof include a transparent film such as a (stretched) polyester film, a (stretched) polypropylene film, and a (stretched) polyamide film.
- the base material layer is used in order to improve the adhesiveness between the base material layer and the above-mentioned sealant film of the present invention.
- the laminated surface of the sealant film or the surface in contact with the laminated layer may be subjected to surface activation treatment such as corona treatment, flame treatment, plasma treatment, and undercoat treatment, and urethane type adhesives and isocyanate-based adhesives may be applied.
- surface activation treatment such as corona treatment, flame treatment, plasma treatment, and undercoat treatment
- urethane type adhesives and isocyanate-based adhesives may be applied.
- Polyester and one or more adhesives selected from the group consisting of a mixture of a polyol and an isocyanate compound and a reaction product may be applied.
- the laminate of the present invention can be produced by various known production methods.
- the laminated surface of the sealant film of the present invention or the surface in contact with the laminated layer of the base material layer is subjected to surface activation treatment such as corona treatment, flame treatment, plasma treatment, ozone treatment, undercoat treatment, or the like.
- surface activation treatment such as corona treatment, flame treatment, plasma treatment, ozone treatment, undercoat treatment, or the like.
- adhesives selected from the group consisting of urethane type adhesives, isocyanate adhesives, polyesters, and mixtures of polyols and isocyanate compounds, and reaction products.
- the base material layer is made of a thermoplastic resin
- a base material is used using a multilayer die.
- the sealant film and the base material layer are bonded to each other via a urethane type adhesive, an isocyanate adhesive, a polyester, and one or more adhesives selected from the group consisting of a mixture of a polyol and an isocyanate compound and a reaction product.
- a (laminating) method dry laminating method
- the packaging bag of the present invention is a bag having the sealant film of the laminated body as the inner surface.
- the shape of the package of the present invention is not particularly limited as long as the sealant film is used as the inner surface, and the package has various known shapes.
- a method of bending the above laminated body so that the sealant film is on the inner surface, heat-sealing one side of the bent body to form a tubular shape, and then heat-sealing the lower side to form a bag-like structure The sealant films of No. 1 are overlapped so as to face each other, and the three sides are heat-sealed to form a bag, or the above-mentioned laminated sealant film and a film or sheet that can be heat-sealed are overlapped, and the three sides are heat-sealed to form a bag.
- the packaging bag can be made by various known manufacturing methods such as a method of shaping.
- the material to be packaged that can be packaged in the packaging bag of the present invention may be liquid or solid regardless of its shape.
- liquids or viscous include foods and pharmaceuticals.
- the liquid or the viscous body may contain a solid substance such as a dressing containing granules.
- Example 1 A laminate (wrapping film) was produced by a dry laminating method as follows.
- a multi-stage extruder for the inner layer (heat seal layer), intermediate layer and outer layer (laminate layer) of Alpine's three-kind three-layer inflation molding machine die diameter: 225 mm ⁇ , extruder: 50 mm ⁇ x 3 units).
- a film was obtained in which the laminated layer side (outer layer) was subjected to corona treatment (45 dyn) at the time of forming a three-layer film.
- a 15 ⁇ m-thick stretched nylon base film (Unitika emblem) is dry-laminated (adhesive: Takelac A315, coating amount 3 g / m 2 ) on the laminate layer side of the three-layer film using a dry laminator, and then packaged for evaluation. I got a film.
- Example 2 A laminate (wrapping film) was produced by an extrusion laminating method as follows.
- an extrusion laminating device set so that the temperature of the resin extruded from the T-die of an extruder with a diameter of 60 mm ⁇ is 295 ° C, under the conditions of a cooling roll surface temperature of 30 ° C, a die width of 500 mm, and a die lip opening of 0.9 mm.
- the extrusion amount is adjusted so that the coating thickness becomes 25 ⁇ m when the processing speed is 80 m / min, and the laminate layer is sprayed with ozone at the laminate portion on the substrate coated with the anchor coating agent.
- the material was extruded to a take-up speed of 80 m / min and a coating thickness of 25 ⁇ m, extruded and laminated to form a laminated layer.
- the base material coated with the anchor coating agent is an isocyanate-based anchor coating agent (Takelac (registered trademark) manufactured by Mitsui Chemicals, Inc.) on a biaxially stretched nylon film (ONY # 15 manufactured by Toyobo Co., Ltd.) having a width of 500 mm and a thickness of 15 ⁇ m. ) A-3201, Takenate (registered trademark) A-3075) coated with gravure roll, and the laminate layer material is an ethylene / 1-hexene copolymer produced by a multi-stage vapor phase polymerization method.
- isocyanate-based anchor coating agent Takelac (registered trademark) manufactured by Mitsui Chemicals, Inc.) on a biaxially stretched nylon film (ONY # 15 manufactured by Toyobo Co., Ltd.) having a width of 500 mm and a thickness of 15 ⁇ m.
- A-3201 Takenate (registered trademark) A-3075 coated with gravure roll, and the laminate layer material is an ethylene
- the heat-sealed layer is extruded onto the laminate layer using the above-mentioned extrusion laminating apparatus so that the extrusion resin temperature is 295 ° C., the take-up speed is 80 m / min, and the coating thickness is 25 ⁇ m, and an extrusion laminating process is performed to obtain a laminate. rice field.
- the laminate was subjected to aging for 24 hours in an oven at 40 ° C. to obtain a packaging film for evaluation.
- MFR JIS K7210, 190 ° C.
- MFR JIS K7210, 190 ° C.
- Ethylene registered trademark
- a packaging film for evaluation was prepared in the same manner except that the resin mixed by the mixer was charged, and the oil resistance was evaluated. The results are shown in Table 1.
- JIS K7112 0.921 g
- MFR JIS K7210, 190 ° C.
- melt tension (mN) of the ethylene-based polymer and composition (mixture) used in Examples and Comparative Examples was measured by the measurement method described above.
- Two evaluation packaging films cut out to a size of 90 mm x 120 mm are stacked so that the heat seal layers are in contact with each other, and 10 mm from the ends of the three sides is heat-sealed under the conditions of 160 ° C, 0.5 seconds, and 0.5 MPa.
- the sealant film of the present invention and a packaging bag made of the film have excellent durability against conventional oils and fats, especially packaging materials for oils and fats having components extracted from spices, and have a higher temperature environment. Or (according to Arenius's law), it is characterized by being able to be stored for a longer period of time.
Abstract
Description
[1]
エチレン系重合体で構成される単層または多層のシーラントフィルムであって、シーラントフィルムの表面層に下記要件(i)~(iii)を満たすエチレン系重合体(A)からなる層を有してなるシーラントフィルム。
(ii)JIS K7210-1に準拠して190℃における2.16kg荷重でのメルトフローレート(MFR)が0.1~20g/10分の範囲。
(iii)エチレンと炭素数4以下のα-オレフィンとの共重合体(A2)の含有率が0質量%以上50質量%以下、エチレンと炭素数5以上のα-オレフィンとの共重合体(A1)の含有率が26質量%以上100質量%以下である。
エチレン系重合体(A)の密度が910kg/m3超~919kg/m3の範囲である項[1]に記載のシーラントフィルム。
エチレン系重合体(A)のメルトフローレート(MFR)が1.0g/10分超~3.0g/10分の範囲である項[1]に記載のシーラントフィルム。
エチレン系重合体(A)が、さらに下記要件(iv)を有してなる項[1]記載のシーラントフィルム。
[5]
エチレン系重合体(A)が、DSC測定のDSC曲線から求められる全融解熱量(Ht)と、120℃以上でのDSC曲線から求められる融解熱量(Hh)との比である融解熱量比(Hh/Ht)が10%未満である項[1]に記載のシーラントフィルム。
シーラントフィルムが、ラミネート層およびヒートシール層の二層からなり、且つ、少なくともヒートシール層がエチレン系重合体(A)からなる層である項[1]に記載のシーラントフィルム。
ラミネート層が、下記要件(イ)および(ロ)を満たすエチレン系重合体(C)からなる層である項[6]に記載のシーラントフィルム。
(ロ)JIS K7210-1に準拠して190℃、2.16kg荷重の条件下で測定したメルトフローレート(MFR)が0.01~20g/10分の範囲にある。
シーラントフィルムが、ラミネート層、中間層およびヒートシール層の少なくとも三層からなり、且つ、少なくともヒートシール層がエチレン系重合体(A)からなる層である項[1]に記載のシーラントフィルム。
ラミネート層が、下記要件(イ)および(ロ)を満たすエチレン系重合体(C)からなる層である項[8]に記載のシーラントフィルム。
(ロ)JIS K7210-1に準拠して190℃、2.16kg荷重の条件下で測定したメルトフローレート(MFR)が0.01~20g/10分の範囲にある。
中間層が、下記要件(イ)および(ロ)を満たすエチレン系重合体(C)からなる層である項[8]に記載のシーラントフィルム。
(ロ)JIS K7210-1に準拠して190℃、2.16kg荷重の条件下で測定したメルトフローレート(MFR)が0.01~20g/10分の範囲にある。
基材層と項[1]~[10]のいずれか1項に記載のシーラントフィルムとを積層してなる積層体。
基材層とシーラントフィルムとの積層が、ドライラミネートにより貼り合わせてなる項[11]に記載の積層体。
項[11]または項[12]に記載の積層体から形成され、且つシーラントフィルムを内面としてなる包装袋。
内容物に香辛料由来の成分を含む項[13]に記載の包装袋。
本発明のシーラントフィルムの表面層(以下、「ヒートシール層、ラミネート層」とも言う。)を形成するエチレン系重合体(A)は、下記要件(i)~(iii)を満たすエチレン系重合体である。
〈要件(i)〉
密度が910kg/m3超~940kg/m3未満、好ましくは910kg/m3超~930kg/m3、より好ましくは910kg/m3超~920kg/m3、最も好ましくは、910kg/m3超~919kg/m3の範囲にある。
〈要件(ii)〉
JIS K7210-1に準拠して190℃における2.16kg荷重でのメルトフローレート(MFR)が0.1~20g/10分、好ましくは0.3~15g/10分、より好ましくは0.5~10g/10分、さらに好ましくは0.5~5g/10分、最も好ましくは、1.0g/10分超~3.0g/10分の範囲にある。
〈要件(iii)〉
エチレン系重合体(A)は、エチレンと炭素数4以下のα-オレフィンとの共重合体(A2)の含有率が0~50質量%、好ましくは0~40質量%、より好ましくは0~30質量%の範囲にあり、さらに好ましくは0質量%、エチレンと炭素数5以上のα-オレフィンとの共重合体(A1)の含有率が26~100質量%の範囲、好ましくは30~100質量%、より好ましくは50~100質量%の範囲、さらに好ましくは75~100質量%の範囲であり、共重合体(A2)、共重合体(A1)の合計量を100質量%とする。
本発明に係るエチレン系重合体(A)が、上記共重合体(A2)および上記共重合体(A1)に加え、エチレン重合体(A3)を含む場合は、共重合体(A2)、共重合体(A1)およびエチレン重合体(A3)の合計量を100質量%とする。
〈要件(iv)〉
エチレン系重合体(A)を樹脂温度:190℃、溶融時間:6分の条件でノズル径:2.095mmφ、ノズル長さ:8mmのオリフィスから押し出し速度:15mm/分、巻取り速度:15m/分の条件で溶融樹脂が切れることなく巻き取ることができ、かつ、その時に生じた抵抗力である溶融張力(mN)が以下の式を満たす。
〈要件(v)〉
本発明に係るエチレン系重合体(A)は、上記要件(i)~(iv)に下記要件(v)を有することが好ましい。
本発明におけるエチレン系重合体(A)の融解熱量比(Hh/Ht)は、DSC測定のDSC曲線から求められる全融解熱量(Ht)と、120℃以上でのDSC曲線から求められる融解熱量(Hh)から、120℃以上の成分量を示す比率である120℃以上融解熱量比(Hh/Ht)として計算して求めた。
本発明に係るエチレン系重合体(A)に含まれる重合体の一つでエチレン・α-オレフィン共重合体(A1)〔以下、「共重合体(A1)」と略記する場合がある。〕は、エチレンと炭素数5以上のα-オレフィンの共重合体であり、共重合体(A1)は、1種でも、2種以上の共重合体(A1)の混合物(組成物)であってもよい。2種以上の共重合体(A1)の混合物(組成物)は、種々公知の方法、例えば、多段プロセスによる重合段階での2種以上の共重合体(A1)の混合、2種以上の共重合体(A1)のドライブレンド、押出機による溶融混合などを採り得る。
《エチレン・α-オレフィン共重合体(A2)》
本発明に係るエチレン系重合体(A)に含まれる重合体の一つでエチレン・α‐オレフィン共重合体(A2)〔以下、「共重合体(A2)」と略記する場合がある。〕は、エチレンと炭素数4以下のα-オレフィンの共重合体である。
本発明に係る共重合体(A2)は、当該共重合体(A2)および上記共重合体(A1)を含むエチレン系重合体(A)が、記要件(i)~(iii)、好ましくは上記要件(i)~(v)を満たす限り、密度およびMFRは特に限定はされないが、通常、密度が910kg/m3超~940kg/m3未満、好ましくは915~940kg/m3未満、より好ましくは920~930kg/m3範囲にあり、通常、MFRが0.1~20g/10分、好ましくは0.3~15g/10分、より好ましくは0.5~10g/10分、さらに好ましくは0.5~5g/10分の範囲にある。
本発明に係るエチレン系重合体(A)に含まれていてもよい上記共重合体(A2)および共重合体(A1)以外のエチレン重合体(A3)としては、例えば、エチレンの単独重合体、高圧法低密度ポリエチレン(HP-LDPE)などが挙げられる。
本発明に係るエチレン・α-オレフィン共重合体(A1)は、メタロセン系、チタン系、クロム系またはフェノキシイミン系等のオレフィン重合用触媒を用いて調製することができる。この共重合体(A1)は、直鎖状あるいは分岐状低密度ポリエチレンであってもよい。特にメタロセン系オレフィン重合用触媒を用いて調製すると分子量分布の狭い重合体が得られるために低分子量かつ低密度の成分の生成が少なく、こうして調製された共重合体(A1)は、本発明に関する用途、すなわち食品、医薬品等の被包装材料を包装するという用途には有効である。
本発明のシーラントフィルムはエチレン系重合体で構成される単層または多層のシーラントフィルムであって、シーラントフィルムの表面層に上記エチレン系重合体(A)からなる層を有してなるフィルムである。
本発明のシーラントフィルムは熱融着性(ヒートシール性)に優れ、且つ耐油性、特に香辛料から抽出された成分を持つ油脂類に対する耐油性をも有するので、包装材料、特に包装材料のシーラント層として好適に用い得る。
本発明のシーラントフィルムが多層である場合はその一部の層、好ましくはラミネート層および中間層を形成してもよいエチレン系重合体(C)は、エチレンの単独重合体、あるいはエチレンと炭素数3以上のα‐オレフィンとの共重合体であって、エチレンを主体とする重合体であり、高圧法低密度ポリエチレン(HP‐LDPE)、線状低密度ポリエチレン(LLDPE)、中密度ポリエチレン(MDPE)、高密度ポリエチレン(HDPE)の名称で製造販売されているポリエチレン樹脂(エチレン系重合体)を含むエチレン系重合体である。
本発明に係るエチレン系重合体(C)を形成する炭素数3以上のα‐オレフィンは、好ましくは炭素数3~20のα-オレフィンであり、α-オレフィンの例としては、プロピレン、1-ブテン、1-ヘキセン、1-ペンテン、4-メチル-1-ペンテン、1-ヘプテン、1-オクテン、1-デセン、が挙げられる。これらは1種単独で用いてもよく、2種以上を併用してもよい。
(イ)密度が900~940kg/m3、好ましくは910~930kg/m3、より好ましくは920~930kg/m3の範囲にある。
(ロ)JIS K7210-1に準拠して190℃、2.16kg荷重の条件下で測定したメルトフローレート(MFR)が0.01~20g/10分、好ましくは0.05~20g/10分、より好ましくは0.1~5g/10分の範囲にある。
本発明のシーラントフィルムは種々公知のフィルムの製造方法(成形方法)、例えばT-ダイ等のフラットダイを用いるキャスト法であっても、サーキュラーダイを用いるインフレーション法の何れでもよい。
本発明の二層以上シーラントフィルムは上記製造方法に限らず、例えば、予めラミネート層となるフィルムを製造(成形)した後、当該フィルムの表面に、必要に応じて中間層およびヒートシール層となる上記エチレン系共重合体(A)を押出ラミネートする方法も採り得る。
本発明の積層体は、基材層と上記シーラントフィルムが積層されてなる積層体であり、通常、フィルム状あるいはシート状である。
本発明の積層体を構成する基材層は包装材料の一外面となる比較的大きな剛性、強度を有する材料である。具体的には、ナイロン11、ナイロン12等のポリアミド樹脂、ポリエチレンテレフタレート、ポリブチレンテレフタレート等のポリエステル樹脂、ポリエチレン樹脂、ポリプロピレン樹脂等のポリオレフィン樹脂、ポリ塩化ビニリデン樹脂、エチレン-酢酸ビニル共重合体ケン化物、ポリカーボネート樹脂、ポリスチレン樹脂、およびアクリル樹脂からなる群から選ばれる少なくとも1種の熱可塑性樹脂を含むフィルムであり、当該フィルムは無延伸フィルムであっても、一軸あるいは二軸延伸フィルムであってもよい。また、上記フィルムに限らず、金属箔、金属蒸着フィルム、無機酸化物蒸着フィルム等のセラミック蒸着フィルム、紙、不織布、ならびに熱可塑性樹脂を含むフィルムなどとの積層体であってもよい。
金属箔は、材質や厚さなどによって特に限定されず、厚さ5~50μmのアルミニウム箔、錫箔、鉛箔、亜鉛メッキした薄層鋼板、電気分解法によりイオン化金属を薄膜にしたもの、アイアンフォイル等が用いられる。
本発明の積層体は、種々公知の製造方法で製造し得る。例えば、基材層の本発明のシーラントフィルムのラミネート面あるいはラミネート層と接する面を、コロナ処理、火炎処理、プラズマ処理、オゾン処理、アンダーコート処理等の表面活性化処理を行った後、あるいは行わずに、ウレタン型接着剤、イソシアネート系接着剤、ポリエステル、ならびにポリオールとイソシアネート化合物との混合物および反応生成物からなる群から選ばれる1種以上の接着剤などを塗布した後、あるいは塗布せずに、上記シーラントフィルムを溶融押出して(押出ラミネート)して、基材層とシーラントフィルムとを貼り合わせる(積層する)方法、基材層が熱可塑性樹脂からなる場合は、多層ダイを用いて基材層となる熱可塑性樹脂と本発明シーラントフィルムとなる上記エチレン系重合体(A)とを共押出し成形し、積層フィルムとする方法、あるいは、予め上記製造方法(成形方法)で得た本発明のシーラントフィルムと基材層とをウレタン型接着剤、イソシアネート系接着剤、ポリエステル、ならびにポリオールとイソシアネート化合物との混合物および反応生成物からなる群から選ばれる1種以上の接着剤などを介して貼り合わせる(積層する)方法(ドライラミネートする方法)を採り得る。
本発明の包装袋は、上記積層体のシーラントフィルムを内面とした袋である。本発明の包装体はシーラントフィルムを内面とする限りその形状は特に限定はされず、種々公知の形状を有する。
[実施例1]
以下のようにドライラミネート加工法により積層体(包装フィルム)を作製した。
[実施例2]
以下のように押出ラミネート加工法により積層体(包装フィルム)を作製した。
[実施例3]
実施例1において、インフレーション成形機の中間層用の押出機にエチレン・1-ブテン共重合体であるネオゼックス(登録商標)2512F[(株)プライムポリマー製、密度(JIS K7112)=0.924g/cm3、MFR(JIS K7210、190℃)=1.3g/10分]80質量部と、エチレン単独重合体(高圧法低密度ポリエチレン)であるサンテックLD(登録商標)M1920[旭化成(株)、密度(JIS K7112)=0.921g/cm3、MFR(JIS K7210、190℃)=2.0g/10分]20質量部をヘンシェルミキサーで混合した樹脂を投入したこと以外は、同様に評価用の包装フィルムを作製し、耐油性を評価した。結果を表1に示す。
実施例3において、インフレーション成形機の外層用の押出機にエチレン・1-ブテン共重合体であるネオゼックス(登録商標)2512F[(株)プライムポリマー製、密度(JIS K7112)=0.924g/cm3、MFR(JIS K7210、190℃)=1.3g/10分]80質量部と、エチレン単独重合体(高圧法低密度ポリエチレン)であるサンテックLD(登録商標)M1920[旭化成(株)、密度(JIS K7112)=0.921g/cm3、MFR(JIS K7210、190℃)=2.0g/10分]20質量部をヘンシェルミキサーで混合した樹脂を投入したこと以外は、同様に評価用の包装フィルムを作製し、耐油性を評価した。結果を表1に示す。
実施例4において、インフレーション成形機の内層用の押出機にエチレン・1-ブテン共重合体であるネオゼックス(登録商標)2512F[(株)プライムポリマー製、密度(JIS K7112)=0.924g/cm3、MFR(JIS K7210、190℃)=1.3g/10分]50質量部と、エチレン単独重合体(高圧法低密度ポリエチレン)であるサンテックLD(登録商標)M1920[旭化成(株)、密度(JIS K7112)=0.921g/cm3、MFR(JIS K7210、190℃)=2.0g/10分]20質量部、および多段気相重合法により製造されたエチレン・1-ヘキセン共重合体であるエボリュー(登録商標)SP1523[(株)プライムポリマー製、密度(JIS K7112)=0.916g/cm3、MFR(JIS K7210、190℃)=2.0g/10分]30質量部をヘンシェルミキサーで混合した樹脂を投入したこと以外は、同様に評価用の包装フィルムを作製し、耐油性を評価した。結果を表1に示す。
実施例4において、インフレーション成形機の内層用の押出機にエチレン単独重合体(高圧法低密度ポリエチレン)であるサンテックLD(登録商標)M1920[旭化成(株)、密度(JIS K7112)=0.921g/cm3、MFR(JIS K7210、190℃)=2.0g/10分]25質量部、および多段気相重合法により製造されたエチレン・1-ヘキセン共重合体であるエボリュー(登録商標)SP1523[(株)プライムポリマー製、密度(JIS K7112)=0.916g/cm3、MFR(JIS K7210、190℃)=2.0g/10分]75質量部をヘンシェルミキサーで混合した樹脂を投入したこと以外は、同様に評価用の包装フィルムを作製し、耐油性を評価した。結果を表1に示す。
実施例4において、インフレーション成形機の内層用の押出機にエチレン単独重合体(高圧法低密度ポリエチレン)であるサンテックLD(登録商標)M1920[旭化成(株)、密度(JIS K7112)=0.921g/cm3、MFR(JIS K7210、190℃)=2.0g/10分]50質量部、および多段気相重合法により製造されたエチレン・1-ヘキセン共重合体であるエボリュー(登録商標)SP1523[(株)プライムポリマー製、密度(JIS K7112)=0.916g/cm3、MFR(JIS K7210、190℃)=2.0g/10分]50質量部をヘンシェルミキサーで混合した樹脂を投入したこと以外は、同様に評価用の包装フィルムを作製し、耐油性を評価した。結果を表1に示す。
実施例4において、インフレーション成形機の内層用の押出機にエチレン・1-ブテン共重合体であるネオゼックス(登録商標)2512F[(株)プライムポリマー製、密度(JIS K7112)=0.924g/cm3、MFR(JIS K7210、190℃)=1.3g/10分]80質量部と、エチレン単独重合体(高圧法低密度ポリエチレン)であるサンテックLD(登録商標)M1920[旭化成(株)、密度(JIS K7112)=0.921g/cm3、MFR(JIS K7210、190℃)=2.0g/10分]20質量部をヘンシェルミキサーで混合した樹脂を投入したこと以外は、同様に評価用の包装フィルムを作製し、耐油性を評価した。結果を表1に示す。
実施例4において、インフレーション成形機の内層用の押出機にエチレン・1-ブテン共重合体であるネオゼックス(登録商標)2512F[(株)プライムポリマー製、密度(JIS K7112)=0.924g/cm3、MFR(JIS K7210、190℃)=1.3g/10分]を投入したこと以外は、同様に評価用の包装フィルムを作製し、耐油性を評価した。結果を表1に示す。
実施例4において、インフレーション成形機の内層用
の押出機にエチレン単独重合体(高圧法低密度ポリエチレン)であるサンテックLD(登録商標)M1920[旭化成(株)、密度(JIS K7112)=0.921g/cm3、MFR(JIS K7210、190℃)=2.0g/10分]を投入したこと以外は、同様に評価用の包装フィルムを作製し、耐油性を評価した。結果を表1に示す。
実施例4において、インフレーション成形機の内層用の押出機にエチレン単独重合体(高圧法低密度ポリエチレン)であるサンテックLD(登録商標)M1920[旭化成(株)、密度(JIS K7112)=0.921g/cm3、MFR(JIS K7210、190℃)=2.0g/10分]75質量部、および多段気相重合法により製造されたエチレン・1-ヘキセン共重合体であるエボリュー(登録商標)SP1523[(株)プライムポリマー製、密度(JIS K7112)=0.916g/cm3、MFR(JIS K7210、190℃)=2.0g/10分]25重量部をヘンシェルミキサーで混合した樹脂を投入したこと以外は、同様に評価用の包装フィルムを作製し、耐油性を評価した。結果を表1に示す。
[耐油性評価]
90mm×120mmのサイズに切り出した評価用の包装フィルムをヒートシール層同士が接するように2枚重ね、3辺の端から10mmを160℃、0.5秒、0.5MPaの条件でヒートシールし、酢/水/ラー油を各1/1/1重量比で調製した混合液を100g充填し、残りの1辺を前記他の3辺と同様にヒートシールして得られた前記混合液体入りの包装袋を所定の温度の水中で30分間加熱した後、100kgの荷重をかける試験を3回行ったとき、3回とも破袋、デラミネーションやシール剥離を含む外観不良を生じない最大の加熱温度として評価した。
Claims (14)
- エチレン系重合体で構成される単層または多層のシーラントフィルムであって、シーラントフィルムの表面層に下記要件(i)~(iii)を満たすエチレン系重合体(A)からなる層を有してなるシーラントフィルム。
(i)密度が910kg/m3超~940kg/m3未満の範囲。
(ii)JIS K7210-1に準拠して190℃における2.16kg荷重でのメルトフローレート(MFR)が0.1~20g/10分の範囲。
(iii)エチレンと炭素数4以下のα-オレフィンとの共重合体(A2)の含有率が0質量%以上50質量%以下、エチレンと炭素数5以上のα-オレフィンとの共重合体(A1)の含有率が26質量%以上100質量%以下である。 - エチレン系重合体(A)の密度が910kg/m3超~919kg/m3の範囲である請求項1に記載のシーラントフィルム。
- エチレン系重合体(A)のメルトフローレート(MFR)が1.0g/10分超~3.0g/10分の範囲である請求項1に記載のシーラントフィルム。
- エチレン系重合体(A)が、さらに下記要件(iv)を有してなる請求項1に記載のシーラントフィルム。
(iv)樹脂温度:190℃、溶融時間:6分の条件でノズル径:2.095mmφ、ノズル長さ:8mmのオリフィスから押し出し速度:15mm/分、巻取り速度:15m/分の条件で溶融樹脂が切れることなく巻き取ることができ、かつ、その時に生じた抵抗力である溶融張力(mN)が以下の式を満たす。
溶融張力≦180×e^(-0.7×MFR)+30 - エチレン系重合体(A)が、DSC測定のDSC曲線から求められる全融解熱量(Ht)と、120℃以上でのDSC曲線から求められる融解熱量(Hh)との比である融解熱量比(Hh/Ht)が10%未満である請求項1に記載のシーラントフィルム。
- シーラントフィルムが、ラミネート層およびヒートシール層の二層からなり、且つ、少なくともヒートシール層がエチレン系重合体(A)からなる層である請求項1に記載のシーラントフィルム。
- ラミネート層が、下記要件(イ)および(ロ)を満たすエチレン系重合体(C)からなる層である請求項6に記載のシーラントフィルム。
(イ)密度が900~940kg/m3の範囲にある。
(ロ)JIS K7210-1に準拠して190℃、2.16kg荷重の条件下で測定したメルトフローレート(MFR)が0.01~20g/10分の範囲にある。 - シーラントフィルムが、ラミネート層、中間層およびヒートシール層の少なくとも三層からなり、且つ、少なくともヒートシール層がエチレン系重合体(A)からなる層である請求項1に記載のシーラントフィルム。
- ラミネート層が、下記要件(イ)および(ロ)を満たすエチレン系重合体(C)からなる層である請求項8に記載のシーラントフィルム。
(イ)密度が900~940kg/m3の範囲にある。
(ロ)JIS K7210-1に準拠して190℃、2.16kg荷重の条件下で測定したメルトフローレート(MFR)が0.01~20g/10分の範囲にある。 - 中間層が、下記要件(イ)および(ロ)を満たすエチレン系重合体(C)からなる層である請求項8に記載のシーラントフィルム。
(イ)密度が900~940kg/m3の範囲にある。
(ロ)JIS K7210-1に準拠して190℃、2.16kg荷重の条件下で測定したメルトフローレート(MFR)が0.01~20g/10分の範囲にある。 - 基材層と請求項1~10のいずれか1項に記載のシーラントフィルムとを積層してなる積層体。
- 基材層とシーラントフィルムとの積層が、ドライラミネートにより貼り合わせてなる請求項11に記載の積層体。
- 請求項11または請求項12に記載の積層体から形成され、且つシーラントフィルムを内面としてなる包装袋。
- 内容物に香辛料由来の成分を含む請求項13に記載の包装袋。
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JP2012139848A (ja) | 2010-12-28 | 2012-07-26 | Japan Polyethylene Corp | 包装材料およびそれを用いた液体包装袋 |
JP2012139849A (ja) | 2010-12-28 | 2012-07-26 | Japan Polyethylene Corp | 包装材料およびそれを用いた液体包装袋 |
JP2012139854A (ja) | 2010-12-28 | 2012-07-26 | Japan Polyethylene Corp | 包装材料およびそれを用いた液体包装袋 |
JP2012167172A (ja) * | 2011-02-14 | 2012-09-06 | Dainippon Printing Co Ltd | 植物由来ポリエチレンを用いたフィルムおよび容器、包装袋 |
JP2016147430A (ja) * | 2015-02-12 | 2016-08-18 | 三井化学東セロ株式会社 | 二軸延伸エチレン重合体多層フィルム |
WO2019181842A1 (ja) | 2018-03-20 | 2019-09-26 | 株式会社プライムポリマー | 積層体および液体包装袋 |
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JPH0726079A (ja) * | 1992-12-03 | 1995-01-27 | Mitsubishi Chem Corp | ラミネート用樹脂組成物 |
JPH09104468A (ja) * | 1995-10-12 | 1997-04-22 | Kaupatsuku Kk | 任意の方向に引裂可能な積層フィルム及びこれで作った易開封性包装袋 |
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JP2012139848A (ja) | 2010-12-28 | 2012-07-26 | Japan Polyethylene Corp | 包装材料およびそれを用いた液体包装袋 |
JP2012139849A (ja) | 2010-12-28 | 2012-07-26 | Japan Polyethylene Corp | 包装材料およびそれを用いた液体包装袋 |
JP2012139854A (ja) | 2010-12-28 | 2012-07-26 | Japan Polyethylene Corp | 包装材料およびそれを用いた液体包装袋 |
JP2012167172A (ja) * | 2011-02-14 | 2012-09-06 | Dainippon Printing Co Ltd | 植物由来ポリエチレンを用いたフィルムおよび容器、包装袋 |
JP2016147430A (ja) * | 2015-02-12 | 2016-08-18 | 三井化学東セロ株式会社 | 二軸延伸エチレン重合体多層フィルム |
WO2019181842A1 (ja) | 2018-03-20 | 2019-09-26 | 株式会社プライムポリマー | 積層体および液体包装袋 |
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