CN117255761A - Film for packaging material, packaging bag, and package - Google Patents
Film for packaging material, packaging bag, and package Download PDFInfo
- Publication number
- CN117255761A CN117255761A CN202280028038.2A CN202280028038A CN117255761A CN 117255761 A CN117255761 A CN 117255761A CN 202280028038 A CN202280028038 A CN 202280028038A CN 117255761 A CN117255761 A CN 117255761A
- Authority
- CN
- China
- Prior art keywords
- resin layer
- film
- oil
- packaging
- filler
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
Links
- 239000005022 packaging material Substances 0.000 title claims abstract description 91
- 238000004806 packaging method and process Methods 0.000 title claims description 17
- 229920005989 resin Polymers 0.000 claims abstract description 181
- 239000011347 resin Substances 0.000 claims abstract description 181
- 239000000945 filler Substances 0.000 claims abstract description 84
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 84
- 239000000463 material Substances 0.000 claims abstract description 50
- 239000006185 dispersion Substances 0.000 claims abstract description 39
- 239000007788 liquid Substances 0.000 claims abstract description 25
- 238000009835 boiling Methods 0.000 claims abstract description 21
- 229920005672 polyolefin resin Polymers 0.000 claims abstract description 21
- 238000000691 measurement method Methods 0.000 claims abstract description 10
- 239000012785 packaging film Substances 0.000 claims description 31
- 229920006280 packaging film Polymers 0.000 claims description 31
- 238000000034 method Methods 0.000 claims description 23
- 229920001971 elastomer Polymers 0.000 claims description 20
- 239000000806 elastomer Substances 0.000 claims description 17
- 238000010025 steaming Methods 0.000 claims description 9
- 239000010410 layer Substances 0.000 description 146
- 239000003921 oil Substances 0.000 description 69
- -1 polypropylene Polymers 0.000 description 53
- 229920001155 polypropylene Polymers 0.000 description 38
- 239000002245 particle Substances 0.000 description 37
- 239000004743 Polypropylene Substances 0.000 description 33
- 238000010438 heat treatment Methods 0.000 description 24
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 21
- JQVDAXLFBXTEQA-UHFFFAOYSA-N dibutylamine Chemical compound CCCCNCCCC JQVDAXLFBXTEQA-UHFFFAOYSA-N 0.000 description 14
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 12
- 239000012790 adhesive layer Substances 0.000 description 11
- 239000000377 silicon dioxide Substances 0.000 description 11
- 238000007789 sealing Methods 0.000 description 10
- 239000004698 Polyethylene Substances 0.000 description 9
- 239000000853 adhesive Substances 0.000 description 9
- 230000001070 adhesive effect Effects 0.000 description 9
- 229920000573 polyethylene Polymers 0.000 description 9
- 230000002209 hydrophobic effect Effects 0.000 description 8
- 230000015572 biosynthetic process Effects 0.000 description 7
- 229920001400 block copolymer Polymers 0.000 description 7
- 238000012937 correction Methods 0.000 description 7
- 238000011156 evaluation Methods 0.000 description 7
- 238000005259 measurement Methods 0.000 description 7
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 6
- 235000021438 curry Nutrition 0.000 description 6
- 238000003475 lamination Methods 0.000 description 6
- 229920000098 polyolefin Polymers 0.000 description 6
- VXNZUUAINFGPBY-UHFFFAOYSA-N 1-Butene Chemical compound CCC=C VXNZUUAINFGPBY-UHFFFAOYSA-N 0.000 description 5
- 238000009826 distribution Methods 0.000 description 5
- 239000011342 resin composition Substances 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- 239000000758 substrate Substances 0.000 description 5
- 239000004711 α-olefin Substances 0.000 description 5
- ZGEGCLOFRBLKSE-UHFFFAOYSA-N 1-Heptene Chemical compound CCCCCC=C ZGEGCLOFRBLKSE-UHFFFAOYSA-N 0.000 description 4
- LIKMAJRDDDTEIG-UHFFFAOYSA-N 1-hexene Chemical compound CCCCC=C LIKMAJRDDDTEIG-UHFFFAOYSA-N 0.000 description 4
- KWKAKUADMBZCLK-UHFFFAOYSA-N 1-octene Chemical compound CCCCCCC=C KWKAKUADMBZCLK-UHFFFAOYSA-N 0.000 description 4
- WSSSPWUEQFSQQG-UHFFFAOYSA-N 4-methyl-1-pentene Chemical compound CC(C)CC=C WSSSPWUEQFSQQG-UHFFFAOYSA-N 0.000 description 4
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 4
- 239000003925 fat Substances 0.000 description 4
- 238000009499 grossing Methods 0.000 description 4
- YWAKXRMUMFPDSH-UHFFFAOYSA-N pentene Chemical compound CCCC=C YWAKXRMUMFPDSH-UHFFFAOYSA-N 0.000 description 4
- 229920005862 polyol Polymers 0.000 description 4
- 229920005749 polyurethane resin Polymers 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
- 239000002344 surface layer Substances 0.000 description 4
- 239000002699 waste material Substances 0.000 description 4
- 239000004925 Acrylic resin Substances 0.000 description 3
- 229920000178 Acrylic resin Polymers 0.000 description 3
- 229920000089 Cyclic olefin copolymer Polymers 0.000 description 3
- 229920003355 Novatec® Polymers 0.000 description 3
- 239000004840 adhesive resin Substances 0.000 description 3
- 229920006223 adhesive resin Polymers 0.000 description 3
- 150000001336 alkenes Chemical class 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 229920001577 copolymer Polymers 0.000 description 3
- 238000007599 discharging Methods 0.000 description 3
- 239000011888 foil Substances 0.000 description 3
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 3
- 150000002632 lipids Chemical class 0.000 description 3
- RLAWWYSOJDYHDC-BZSNNMDCSA-N lisinopril Chemical compound C([C@H](N[C@@H](CCCCN)C(=O)N1[C@@H](CCC1)C(O)=O)C(O)=O)CC1=CC=CC=C1 RLAWWYSOJDYHDC-BZSNNMDCSA-N 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 3
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 3
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 239000005060 rubber Substances 0.000 description 3
- 238000007493 shaping process Methods 0.000 description 3
- 229920002397 thermoplastic olefin Polymers 0.000 description 3
- 229920005992 thermoplastic resin Polymers 0.000 description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 2
- 239000005977 Ethylene Substances 0.000 description 2
- 239000004952 Polyamide Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 239000012298 atmosphere Substances 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000002612 dispersion medium Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 235000013305 food Nutrition 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- TVMXDCGIABBOFY-UHFFFAOYSA-N n-Octanol Natural products CCCCCCCC TVMXDCGIABBOFY-UHFFFAOYSA-N 0.000 description 2
- 150000003961 organosilicon compounds Chemical class 0.000 description 2
- 235000008519 pasta sauces Nutrition 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 238000005498 polishing Methods 0.000 description 2
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 2
- 229920002647 polyamide Polymers 0.000 description 2
- 229920013716 polyethylene resin Polymers 0.000 description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 description 2
- 239000005020 polyethylene terephthalate Substances 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 150000003077 polyols Chemical class 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- 229920005604 random copolymer Polymers 0.000 description 2
- 239000000565 sealant Substances 0.000 description 2
- 229920002725 thermoplastic elastomer Polymers 0.000 description 2
- 229920002799 BoPET Polymers 0.000 description 1
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 229920000298 Cellophane Polymers 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- 235000003332 Ilex aquifolium Nutrition 0.000 description 1
- 235000002296 Ilex sandwicensis Nutrition 0.000 description 1
- 235000002294 Ilex volkensiana Nutrition 0.000 description 1
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 229930182556 Polyacetal Natural products 0.000 description 1
- 239000005062 Polybutadiene Substances 0.000 description 1
- 229920002873 Polyethylenimine Polymers 0.000 description 1
- 239000004721 Polyphenylene oxide Substances 0.000 description 1
- 239000006087 Silane Coupling Agent Substances 0.000 description 1
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 150000008064 anhydrides Chemical class 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- WXCZUWHSJWOTRV-UHFFFAOYSA-N but-1-ene;ethene Chemical compound C=C.CCC=C WXCZUWHSJWOTRV-UHFFFAOYSA-N 0.000 description 1
- IAQRGUVFOMOMEM-UHFFFAOYSA-N butene Natural products CC=CC IAQRGUVFOMOMEM-UHFFFAOYSA-N 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 229920002301 cellulose acetate Polymers 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010411 cooking Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000009820 dry lamination Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 239000005038 ethylene vinyl acetate Substances 0.000 description 1
- 229920006213 ethylene-alphaolefin copolymer Polymers 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- HDNHWROHHSBKJG-UHFFFAOYSA-N formaldehyde;furan-2-ylmethanol Chemical compound O=C.OCC1=CC=CO1 HDNHWROHHSBKJG-UHFFFAOYSA-N 0.000 description 1
- 239000007849 furan resin Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 229920001903 high density polyethylene Polymers 0.000 description 1
- 239000004700 high-density polyethylene Substances 0.000 description 1
- 239000012943 hotmelt Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000011256 inorganic filler Substances 0.000 description 1
- 229910003475 inorganic filler Inorganic materials 0.000 description 1
- 229920000554 ionomer Polymers 0.000 description 1
- 238000010409 ironing Methods 0.000 description 1
- 239000012948 isocyanate Substances 0.000 description 1
- 229920000092 linear low density polyethylene Polymers 0.000 description 1
- 239000004707 linear low-density polyethylene Substances 0.000 description 1
- 229920001684 low density polyethylene Polymers 0.000 description 1
- 239000004702 low-density polyethylene Substances 0.000 description 1
- 229920001179 medium density polyethylene Polymers 0.000 description 1
- 239000004701 medium-density polyethylene Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000001465 metallisation Methods 0.000 description 1
- 239000012764 mineral filler Substances 0.000 description 1
- 239000004533 oil dispersion Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000012766 organic filler Substances 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 229920000083 poly(allylamine) Polymers 0.000 description 1
- 229920000747 poly(lactic acid) Polymers 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 229920000636 poly(norbornene) polymer Polymers 0.000 description 1
- 229920006122 polyamide resin Polymers 0.000 description 1
- 229920002857 polybutadiene Polymers 0.000 description 1
- 229920001748 polybutylene Polymers 0.000 description 1
- 229920005668 polycarbonate resin Polymers 0.000 description 1
- 239000004431 polycarbonate resin Substances 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920005906 polyester polyol Polymers 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
- 229920000570 polyether Polymers 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 239000009719 polyimide resin Substances 0.000 description 1
- 239000004626 polylactic acid Substances 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 229920000193 polymethacrylate Polymers 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 229920006324 polyoxymethylene Polymers 0.000 description 1
- 229920001955 polyphenylene ether Polymers 0.000 description 1
- 229920005629 polypropylene homopolymer Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 239000011118 polyvinyl acetate Substances 0.000 description 1
- 229920002689 polyvinyl acetate Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 235000019633 pungent taste Nutrition 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000005871 repellent Substances 0.000 description 1
- 230000003252 repetitive effect Effects 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 238000000790 scattering method Methods 0.000 description 1
- 229920002050 silicone resin Polymers 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- 229920006230 thermoplastic polyester resin Polymers 0.000 description 1
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- 238000009816 wet lamination Methods 0.000 description 1
Abstract
The present disclosure relates to a film for packaging materials, which is provided with a first resin layer containing a polyolefin resin and a filler. In the first aspect, the protruding portion is formed on the surface of the first resin layer from the filler, and the slip angle of the water on the oil film on the surface of the first resin layer measured by the following measurement method is 20 ° or less. In the second mode, the ratio Y/X of the surface area ratio Y of the surface of the first resin layer to X μm of the arithmetic mean height Sa of the surface of the first resin layer is 0.4 to 8.0 μm ‑1 . (measurement method) packaging Material comprising a base Material and a film for packaging Material, according to the first TreeThe package bag is formed in such a manner that the fat layer is disposed inside. The package is packed with the oil-in-water dispersion type contents, and then subjected to a high-temperature boiling treatment and a boiling treatment. The sliding angle of the water on the oil film formed on the surface of the first resin layer was measured using a contact angle meter under the conditions of a liquid amount of 20. Mu.L and a speed of 90 DEG/min.
Description
Technical Field
The present invention relates to a film for packaging material, packaging bag, and package.
Background
Packages in which oil-in-water dispersion type contents such as curry are enclosed are known. Such packages are pointed out to have the following problems: when the package is opened to discharge the content, the content cannot be completely used up to cause waste, dirt is generated due to adhesion of the content, and the discharge operation of the content takes time and effort.
Therefore, the package is required to have excellent slipperiness, which is easy to slip the contents when the package is opened.
For example, patent document 1 proposes that the package using a packaging sheet having a heat seal layer containing polyolefin particles having an average particle diameter D50 of 10 to 50 μm and a melting point of 100 to 180 ℃ and having a surface roughness Ra of 1.00 to 7.00 μm makes it more difficult for the contents to adhere to the surface and be easily discharged from the package.
Prior art literature
Patent literature
Patent document 1: international publication No. 2018/003978
Disclosure of Invention
Technical problem to be solved by the invention
However, the package described in patent document 1 has the following technical problems.
That is, the package described in patent document 1 has room for improvement in terms of easy discharge of the contents, i.e., slip-off property, at the time of opening.
The present invention has been made in view of the above-described circumstances, and an object thereof is to provide a film for packaging material, a packaging bag, and a package body, which can impart excellent slip-off properties to oil-in-water type contents by heat treatment. In the present invention, the oil-in-water dispersion type content means a content containing water and lipid, and the content of water is greater than the content of lipid. "lipid" is a concept that includes oils that are liquid at 20deg.C (normal temperature) and fats that are solid at 20deg.C. Hereinafter, the oil contained in the oil-in-water dispersion type content and the fat which is the above-mentioned fat and is converted into a liquid state by the heat treatment applied to the film for a packaging material of the present invention are collectively referred to as "oil component".
Means for solving the technical problems
An aspect of the present invention (first invention) for solving the above-described problems is a film for packaging material, comprising a first resin layer containing a polyolefin resin and a filler, wherein a convex portion is formed on the surface of the first resin layer by the filler, and the slip angle of water on the oil film on the surface of the first resin layer is 20 ° or less, measured by the following measurement method.
(measurement method)
a) A packaging bag formed such that a first resin layer is disposed inside is prepared using a packaging material including a base material and a packaging material film provided on the base material.
b) A package having a package bag and an oil-in-water dispersion type content enclosed in the package bag is prepared.
c) And (3) performing high-temperature steaming treatment and boiling treatment on the package.
d) The sliding angle of the water on the oil film formed on the surface of the first resin layer was measured using a contact angle meter under the conditions of a liquid amount of 20. Mu.L and a speed of 90 DEG/min.
According to the film for a packaging material, the polyolefin resin in the first resin layer can absorb oil and swell under the temperature condition of the high-temperature retort treatment or the boiling treatment. Therefore, when the packaging film is used for a packaging material of a package body in which an oil-in-water dispersion type content is enclosed, and the oil content in the content is absorbed by the first resin layer when a heating treatment such as a high-temperature boiling treatment or a boiling treatment is performed in a state in which the oil-in-water dispersion type content is brought into contact with the surface of the first resin layer of the packaging film. At this time, the slip angle of the water on the oil film on the surface of the first resin layer measured by the above-described measurement method was 20 ° or less. This means that the surface of the first resin layer on the content side has moderate irregularities due to the filler, and the oil contained in the content is absorbed by the first resin layer, thereby improving the lipophilicity of the first resin layer. Since an oil film is present on the surface of the first resin layer and the sliding angle of the water on the oil film is 20 ° or less, the content can be prevented from directly contacting the surface of the first resin layer, and the content having a hydrophobic oil film as an interface, the surface layer portion of which is composed of water, becomes liable to slide off. Thus, the film for packaging material of the present invention can impart excellent slip properties to the oil-in-water dispersion type content by heat treatment.
In the film for packaging material of the first aspect of the present invention, the amount of the oil film formed is preferably 0.2 to 1.2g/200cm 2 . When the amount of the oil film is within the above range, good slipperiness to the contents is easily maintained.
Another aspect of the present invention (second invention) for solving the above-mentioned problems is a film for packaging material comprising a first resin layer comprising a polyolefin resin and a filler, wherein the ratio Y/X of the surface area ratio Y of the first resin layer surface to X μm of the arithmetic mean height Sa of the first resin layer surface is 0.4 to 8.0 μm -1 。
According to the film for a packaging material, the polyolefin resin in the first resin layer can absorb oil and swell under the temperature condition of the high-temperature retort treatment or the boiling treatment. Therefore, when a packaging material for a package body in which an oil-in-water dispersion type content is enclosed is used as a packaging material, and a heating treatment such as a high-temperature boiling treatment or a boiling treatment is performed in a state in which the oil-in-water dispersion type content is brought into contact with the surface of the first resin layer of the packaging material film, a part of the oil in the content is absorbed by the first resin layer. At this time, in the first resin layer, the ratio Y/X of the surface area ratio Y of the surface S of the first resin layer 21 to X μm of the arithmetic mean height Sa of the first resin layer surface is 0.4 to 8.0 μm -1 Therefore, the surface of the first resin layer on the content side can have appropriate roughness due to the fillerThe contact area of the first resin layer with the oil-in-water dispersion type content increases. Therefore, the oil contained in the content is easily absorbed by the first resin layer, and the lipophilicity of the first resin layer is improved. Thus, an oil film is easily and stably formed between the surface of the first resin layer and the content. By providing an oil film between the surface of the first resin layer and the content, the content can be prevented from directly contacting the surface of the first resin layer, and the content having a water-repellent oil film as an interface in the surface layer portion is likely to slip off. Thus, the film for packaging material of the present invention can impart excellent slip properties to the oil-in-water dispersion type content by heat treatment.
In the film for packaging material according to the second aspect of the present invention, the projected area ratio of the convex portion formed of the filler on the surface of the first resin layer is preferably 8 to 45%. When the projected area ratio is within the above range, good sliding property with respect to the content is easily maintained.
In the packaging film, the filler preferably contains a porous filler. By using the porous filler, an oil film is more stably formed between the surface of the first resin layer and the content, and more excellent sliding property with respect to the content is more easily exhibited.
In the film for packaging material, the first resin layer preferably further contains an elastomer component. This makes it easy to exhibit more excellent sliding properties with respect to the contents.
In addition, another aspect of the present invention is a packaging material comprising a base material and a packaging film provided on the base material, wherein the packaging film is formed of the packaging film, and a surface of the packaging film on the side opposite to the base material in the first resin layer is exposed.
The packaging material is provided with the film for packaging material, and the film for packaging material is heat-treated in a state in which the oil-in-water dispersion type content is brought into contact with the exposed surface on the side opposite to the base material, whereby excellent slip-off property can be imparted to the oil-in-water dispersion type content. Further, since the packaging material further includes a base material, the packaging material film can be reinforced by the base material.
A further aspect of the present invention is a package for containing oil-in-water type contents, which is formed using the above-described package material, and in which the above-described first resin layer is disposed inside.
According to this packaging bag, the packaging film contained in the packaging material can impart excellent slip properties to the oil-in-water dispersion type content in contact with the first resin layer by heat treatment. Therefore, when the package is subjected to a heating treatment such as a retort treatment or a boiling treatment after the package is obtained by sealing the oil-in-water dispersed content in the package, the oil-in-water dispersed content can be easily slipped off when the oil-in-water dispersed content is discharged from the package after the package is opened. Therefore, the amount of residual liquid in the oil-in-water type content can be reduced, waste of the content can be prevented, dirt caused by adhesion of the content can be prevented, and the content discharging operation can be performed efficiently.
A further aspect of the present invention is a package comprising the above-described package bag and an oil-in-water dispersion type content enclosed in the package bag.
According to this package, the packaging film contained in the packaging material can impart excellent slip properties to the oil-in-water dispersion type content in contact with the first resin layer by heat treatment. Therefore, when the package is subjected to a heating treatment such as a retort treatment or a boiling treatment, the oil-in-water dispersed content can be easily slipped off when the oil-in-water dispersed content is discharged from the package after the package is opened. Therefore, the amount of residual liquid in the oil-in-water type content can be reduced, waste of the content can be prevented, dirt caused by adhesion of the content can be prevented, and the content discharging operation can be performed efficiently.
Effects of the invention
According to the present invention, it is possible to provide a film for packaging material, a packaging bag, and a package body, each of which can impart excellent slip-off property to oil-in-water type contents by heat treatment.
Drawings
Fig. 1 is a cross-sectional view schematically showing an embodiment of the packaging material of the present invention.
Fig. 2 (a) to 2 (c) are a series of schematic diagrams illustrating a mechanism by which the packaging material of the present invention can impart excellent slip properties to oil-in-water type contents.
Fig. 3 is a cross-sectional view showing an embodiment of the package of the present invention.
Fig. 4 (a) to 4 (e) are a series of schematic diagrams illustrating a method of evaluating the slip-off property of the contents of the packaging material.
Detailed Description
Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the drawings, the same or equivalent components are denoted by the same reference numerals, and repetitive description thereof will be omitted. The dimensional ratios in the drawings are not limited to the ratios shown in the drawings.
< packaging Material >
First, an embodiment of the packaging material of the present invention will be described with reference to fig. 1 and 2. Fig. 1 is a cross-sectional view schematically showing an embodiment of the packaging material of the present invention, and fig. 2 (a) to 2 (c) are a series of schematic views illustrating a mechanism by which the packaging material of the present invention can impart excellent slip-off property to oil-in-water type contents.
The packaging material 100 shown in fig. 1 is used in the formation of a package for housing oil-in-water dispersion type contents. The oil-in-water dispersion type content means a content containing water and oil in an amount greater than the oil in the content. The amount of the oil component contained in the oil-in-water dispersion type content is, for example, 0.1% by mass or more and less than 50% by mass, and may be 0.5 to 40% by mass or 1 to 20% by mass. Specific examples of the oil-in-water dispersion type contents include curry, rice covered with ringer's lid, pasta sauce (e.g., pasta sauce) and pet foods. The amount of the oil contained in the curry is, for example, about 0.2 to 15% by mass, and the amount of the water contained in the curry is, for example, about 70 to 90% by mass.
The packaging material 100 includes a base material 10, a packaging material film 20 provided on the base material 10, and an adhesive layer 30 for adhering the base material 10 and the packaging material film 20.
The packaging film 20 includes a first resin layer 21 and a second resin layer 22 that contain a polyolefin resin and a filler, and in the packaging film 20, the first resin layer 21 is disposed on the side opposite to the base material 10, and the second resin layer 22 is disposed on the side of the base material 10. That is, the surface S of the first resin layer 21 opposite to the base material 10 is exposed. When a package bag (for example, a retort pouch) is formed using the packaging material 100, the surface S of the first resin layer 21 becomes an inner surface of the package bag.
The first resin layer 21 contains a resin composition 21a containing a polyolefin resin and fillers 21b dispersed in the resin composition 21 a. A convex portion is formed by the filler 21b on the surface S of the first resin layer.
According to the above-described packaging material 100, the polyolefin resin contained in the first resin layer 21 of the packaging material film 20 can absorb oil and swell under the temperature condition of the high-temperature retort treatment or boiling treatment. Therefore, when the packaging material 100 is used in a package body in which the oil-in-water dispersed content C is enclosed, the oil content C contained in the content C is brought into contact with the surface S of the first resin layer 21 of the packaging material film 20 (see fig. 2 (a)) and is subjected to a heating treatment such as a high-temperature steam treatment or a boiling treatment in this state O Is absorbed by the first resin layer 21 (see fig. 2 (b)).
In this case, in the first embodiment, the oil film F of the surface S of the first resin layer 21 is measured by a measurement method described later O The sliding angle of the upper water is below 20 degrees. This means that the surface of the first resin layer 21 on the content C side has moderate irregularities due to the filler 21b, and the oil component C contained in the content C O Is absorbed by the first resin layer 21, and the lipophilicity of the first resin layer 21 is improved.
By appropriately adjusting the degree of formation of the convex portion formed by the filler 21b on the surface S of the first resin layer 21, it is easy to stably form the oil film F between the surface S of the first resin layer 21 and the content C O . Further, an oil film F is present between the surface S of the first resin layer 21 and the content C O Can slide waterThe falling angle is set in a desired range, and the content C can be prevented from directly contacting the surface S of the first resin layer 21 and at the same time, the oil film F with hydrophobicity O As an interface, the content C whose surface layer portion is made of water becomes liable to slip off.
In addition, in the second embodiment, the ratio Y/X of the surface area ratio Y of the surface S of the first resin layer 21 to the X μm of the arithmetic average height Sa of the surface S of the first resin layer 21 in the first resin layer 21 is 0.4 to 8.0 μm -1 Therefore, the surface S of the first resin layer 21 on the content C side can have appropriate irregularities due to the filler 21b, and the contact area between the first resin layer 21 and the oil-in-water dispersion type content C increases. Therefore, the oil C contained in the content C O Is easily absorbed by the first resin layer 21, and the lipophilicity of the first resin layer 21 is improved. The inventors speculate that, in the formation of the oil film Fo, it is important that a plurality of convex structures of about several μm are generated by the filler 21b, which are structures that cannot be obtained by a general processing method such as a shaping process.
Here, Y/X is a three-dimensional parameter representing the efficiency of contribution of the arithmetic mean height Sa to the surface area ratio. The arithmetic average height Sa is a parameter that expands Ra (arithmetic average height of a line) to a plane. The surface area ratio is a parameter indicating the ratio of the actual surface area to the area where the surface of which the surface shape is supposed to be measured is completely flat. When the ratio Y/X is within the above range, the content C can have good slipperiness. For example, even if the value of Sa is equal, it can be said that the contribution efficiency of the larger surface area ratio to the slip-off property is better.
By properly adjusting the degree of roughness and surface area ratio of the surface S of the first resin layer 21, it is easy to stably form the oil film F between the surface S of the first resin layer 21 and the content C O . Further, an oil film F is present between the surface S of the first resin layer 21 and the content C O The content C can be prevented from directly contacting the surface S of the first resin layer 21 and is formed with a hydrophobic oil film F O As an interface, the content C whose surface layer portion is made of water becomes liable to slip off.
Therefore, in the first and second embodiments, as shown in fig. 2 (c), waterThe oil-in-oil dispersion type contents C can be easily formed on the oil film F only by tilting the surface S of the packaging material 100 O Slide up. Therefore, the packaging material 100 can impart excellent slip properties to the oil-in-water dispersion type content C by the heat treatment.
In addition, since the polyolefin resin has hot melt adhesiveness, the first resin layer 21 can also function as a sealant film. Thus, when forming the package, the packaging material 100 can easily form the package by bringing the first resin layers 21 inward and thermally fusion-bonding the first resin layers 21 to each other.
The first resin layer 21, the second resin layer 22, the base material 10, and the adhesive layer 30 constituting the packaging material 100 will be described below.
(first resin layer)
The first resin layer 21 is a layer that imparts excellent slip properties to the oil-in-water dispersion type content C by performing a heat treatment (for example, a high temperature boiling treatment and a boiling treatment) in a state of being in contact with the oil-in-water dispersion type content C.
The content of the polyolefin resin in the resin composition 21a is usually 75% by mass or more, but may be 80% by mass or more or 90% by mass or more. The resin composition 21a may be substantially composed of a polyolefin resin.
Examples of the polyolefin resin include polypropylene resin, polyethylene resin, and polybutylene resin. Among them, polypropylene resin is preferable because of its excellent heat resistance.
Examples of the polyethylene resin include low density polyethylene, linear low density polyethylene, medium density polyethylene, high density polyethylene, and ethylene- α -olefin copolymer.
Examples of the polypropylene resin include homo-polypropylene, block polypropylene, random polypropylene, propylene- α -olefin copolymer, and modified polypropylene. When a block polypropylene and a random polypropylene are used in combination as the polypropylene resin, the mass ratio of the block polypropylene to the random polypropylene (block polypropylene/random polypropylene) is preferably 20/80 to 80/20, more preferably 40/60 to 60/40. As the atactic polypropylene, prime Polypro F744NP, F-300SP, manufactured by Prime Polymer, co., ltd. Examples of the block POLYPROPYLENE include Novatec BC3HF and BC5FA manufactured by POLYPROPYLENE corporation of japan.
In addition to the above, the polyolefin resin may be a cyclic polyolefin such as polynorbornene. In addition, the polyolefin resin is preferably a linear polyolefin from the viewpoints of sealability and strength physical properties (tensile strength, impact strength, etc.), and the linear polyolefin may be linear or branched.
Examples of the ethylene-alpha olefin copolymer and the alpha olefin component in the propylene-alpha olefin copolymer include ethylene, 1-butene, 1-pentene, 1-hexene, 1-heptene, 1-octene, and 4-methyl-1-pentene. The copolymer may be a random copolymer or a block copolymer.
The modified polypropylene is obtained, for example, by graft-modifying polypropylene with an unsaturated carboxylic acid derivative component derived from an unsaturated carboxylic acid, an anhydride of an unsaturated carboxylic acid, an ester of an unsaturated carboxylic acid, or the like. Further, as the polypropylene resin, a modified polypropylene such as a hydroxyl modified polypropylene or an acrylic modified polypropylene may be used. Examples of the alpha-olefin component used for obtaining the propylene-based copolymer include 1-butene, 1-pentene, 1-hexene, 1-heptene, 1-octene, and 4-methyl-1-pentene.
Examples of the filler 21b include an organic filler such as an olefin filler and an acrylic filler, an inorganic filler such as a silica filler, and a porous filler.
Examples of the olefin filler include the mipolon (registered trademark) series manufactured by Mitsui chemical Co., ltd., and the CS series manufactured by Sumitomo chemical Co., ltd.
Examples of the acrylic filler include MX series manufactured by holly chemical corporation and UNI-POWDER NMB series manufactured by ENEOS liquid crystal Co.
Examples of the silica filler include a Smooth master series manufactured by Dai Kagaku Co., ltd., a Sylophobic series manufactured by Fuji-Silysia Chemicals Co., ltd., an Admafine SO series manufactured by Admatechs Co., ltd., a silica TMS series manufactured by Tayca Co., ltd., and a Sunsphe series manufactured by AGC SITECH Co., ltd.
Examples of the porous filler formed of an organic material include the Techpolymer MBP series manufactured by water-logging Industrial Co., ltd., and the Techpolymer ACP series manufactured by water-logging Industrial Co., ltd.
Examples of the porous filler formed of an inorganic substance include Sylophobic series manufactured by Fuji-silysia chemical company, and sunsophee series manufactured by AGC SITECH company.
The filler may be used alone or in combination of 1 or 2 or more kinds of fillers having different compositions, particle diameters, and the like.
When the first resin layer 21 contains a porous filler at a proper content, the porous filler can adsorb the oil component C O Promote the oil content C in the oil-in-water dispersion type content C O Absorption into the first resin layer 21. At this time, by the synergistic effect of the irregularities of the surface S of the first resin layer 21 and the increase in lipophilicity due to oil absorption, the oil film F is easily and more stably formed between the surface S of the first resin layer 21 and the content C O . Therefore, more excellent slipperiness to the content C is easily exhibited.
The porous filler may be said to include a main body. The main body portion of the porous filler may be inorganic or organic. Examples of the organic substance include polyolefin resins and acrylic resins. Examples of the acrylic resin include crosslinked poly (meth) acrylates such as crosslinked polymethyl methacrylate. These may be used alone or in combination of 2 or more. Examples of the inorganic substance include mineral fillers such as silica, talc, ceramics, glass beads, and calcium carbonate, carbon black, glass fibers, ceramic fibers, and carbon fibers. These may be used alone or in combination of 2 or more.
The porous filler may further include a coating portion that coats at least a part of the body portion. The coating portion may be made of a hydrophilic material or a hydrophobic material, but is preferably made of a hydrophobic material. The hydrophobic material is a material having a DBA (di-n-butylamine) value of 200mEq/kg or less, and the DBA value is an amount of DBA adsorbed on the surface of the main body. The DBA value corresponds to the amount of DBA adsorbed by the hydroxyl groups on the surface of the main body, and smaller DBA value means smaller hydroxyl groups (higher hydrophobicity).
The porous filler composed of the main body and the coating portion can be obtained, for example, by subjecting the main body to a chemical reaction with a raw material of a hydrophobic material, that is, by subjecting the main body to a hydrophobization treatment. Examples of the raw material of the hydrophobic material include an organosilicon compound. Among them, an organosilicon compound is preferable as a raw material of the hydrophobic material.
The average particle diameter of the filler 21b was calculated according to the type of filler by the following method.
(calculation method for particle size distribution measurement by laser diffraction)
(1) The filler 21b is dispersed in the dispersion medium. The dispersion medium is, for example, water or an organic solvent, and is appropriately selected according to the type of filler.
(2) The average particle diameter of the filler 21b was calculated by a laser diffraction-scattering method using a laser diffraction type particle size distribution measuring apparatus (product name: MT3300EX II, manufactured by Microtrac BEL).
(method of calculating by microscopic observation)
When the above-mentioned measurement of the particle size distribution by laser diffraction is not suitable or difficult, the average particle diameter of the filler 21b may be obtained by using an optical microscope such as a Scanning Electron Microscope (SEM) or a laser microscope.
For any particle in the field of view observed by a microscope, the length of the longest diameter and the shortest diameter of the particle was measured, and the sum of these was divided by 2 to obtain a value as the particle diameter. The particle diameters of a plurality of particles were measured and calculated, and the average value thereof was regarded as the average particle diameter. The number of any of the above particles is preferably 10 or more.
The average particle diameter of the filler 21b is preferably 3 μm or more. At this time, since appropriate irregularities (arithmetic mean height Sa) can be provided by appropriate addition amounts of the filler 21b, the influence of the reduction in sealing strength or the like on the physical properties of the packaging film 20 can be reduced, and the sliding property of the content C can be efficiently improved.
The average particle diameter of the filler 21b is more preferably 5 μm or more, particularly preferably 7 μm or more.
The average particle diameter of the filler 21b is preferably 30 μm or less. At this time, the oil film F is formed more easily on the surface of the first resin layer 21 than when the average particle diameter of the filler 21b exceeds 30. Mu.m O The packaging film 20 can provide more excellent sliding properties to the oil-in-water dispersion type content C enclosed in the package.
The average particle diameter of the filler 21b is more preferably 20 μm or less, and still more preferably 15 μm or less.
The content of the filler 21b in the first resin layer 21 is preferably 0.5 to 30 mass%. At this time, the packaging film 20 is more likely to impart more excellent slip properties to the oil-in-water dispersion type content C enclosed in the package than the case where the content of the filler 21b is out of the above range. The content of the filler 21b in the first resin layer 21 is preferably 1 to 15% by mass, more preferably 3 to 10% by mass. The content of the filler 21b in the first resin layer 21 is, for example, 0.5 to 10 parts by mass, preferably 1 to 8 parts by mass, and more preferably 2 to 8 parts by mass, relative to 100 parts by mass of the polyolefin resin. When the content of the filler 21b is within the above range, appropriate irregularities can be imparted to the surface S of the first resin layer 21.
The thickness of the first resin layer 21 is a value calculated as follows.
(1) First, the packaging film 20 is fixed with an embedding resin (acrylic resin) to prepare a structure.
(2) The specimen for cross-section observation was cut out from the structure using a microtome.
(3) The cross section of the cut cross section observation sample was observed by a microscope (product name: VHX-1000, manufactured by KEYENCE Co., ltd.).
(4) The thickness of 3 places where the filler 21b is not present in the thickness direction of the first resin layer 21 was measured, and the average value of the thicknesses of 3 places was calculated as the thickness of the first resin layer 21.
The thickness of the first resin layer 21 is, for example, 2 to 100. Mu.m, preferably 4 to 70. Mu.m, more preferably 6 to 50. Mu.m, still more preferably 8 to 30. Mu.m. When the thickness of the first resin layer 21 is within the above range, both the sliding property and the heat-sealing property of the content C can be achieved at a high level. The heat sealability herein means, for example, a property that heat sealing can be performed at 100 to 200℃under 0.1 to 0.3MPa for 1 to 3 seconds.
In the first embodiment, the oil film F of the surface S of the first resin layer 21 is measured by the following measurement method O The sliding angle of the upper water is below 20 degrees. This means that the surface S of the first resin layer 21 on the content C side has moderate irregularities due to the filler 21b, and the oil component C contained in the content C O Is absorbed by the first resin layer 21, and the lipophilicity of the first resin layer 21 is improved. The slip angle of water is preferably 15 ° or less, more preferably 10 ° or less. The lower limit of the slip angle of water is not particularly limited, and may be preferably 5 °. The slip angle of water can be changed by appropriately adjusting the degree of formation of the convex portion formed by the filler 21b on the surface S of the first resin layer 21 from the viewpoint of the amount or particle diameter of the filler 21 b.
(measurement method)
a) A packaging bag formed such that a first resin layer is disposed inside is prepared using a packaging material including a base material and a packaging material film provided on the base material.
b) A package body comprising a package bag and an oil-in-water dispersion type content enclosed in the package bag is prepared.
c) And (3) performing high-temperature steaming treatment and boiling treatment on the package. The high temperature steaming treatment referred to herein means that under pressure: 0.2MPa, temperature: 121 ℃, treatment time: heating treatment under the condition of 30 minutes, boiling treatment means heating under pressure: normal pressure, temperature: 100 ℃ and treatment time: and (5) heating treatment under the condition of 5 minutes.
d) A contact angle meter (measuring device: a simple contact angle meter DSA25 manufactured by KRUSS corporation) measures the slip angle of the water on the oil film formed on the surface of the first resin layer. The normal temperature is 25 ℃.
In the first embodiment, the oil film F formed on the surface S of the first resin layer 21 is preferable O The amount of (C) is 0.2-1.2 g/200cm 2 . When the amount of the oil film is within the above range, good sliding property with respect to the content is easily maintained. Oil film F O When the amount exceeds the upper limit value, an oil film exceeding the amount of oil film required for promoting slipperiness is formed, and therefore, an excessive oil film remains in the package bag, and the discharge amount of the content tends to be reduced. Oil film F O When the amount of (C) is less than the lower limit value, the retaining-stabilizing action of the oil film by the convex portion tends to be insufficient, and the sliding property against the content C tends to be lowered. Oil film F O More preferably 0.4g/200cm 2 The above, further preferably 0.6g/200cm 2 The above. Oil film F O More preferably 1.0g/200cm 2 The following is more preferably 0.8g/200cm 2 The following is given. Oil film F O The amount of (2) was calculated from the weight of the sample before and after wiping the oil film formed by the above measurement method using isopropyl alcohol (IPA).
In the second embodiment, the arithmetic average height Sa of the surface S of the first resin layer 21 is 0.4 to 8.0 μm in the above ratio Y/X -1 The range of (2) may be appropriately adjusted, and is preferably 2.0 μm or less. This facilitates formation of appropriate irregularities on the surface S of the first resin layer 21, and can provide more excellent sliding properties to the oil-in-water dispersion type content C. The arithmetic mean height Sa of the surface S is more preferably 1.5 μm or less, and still more preferably 1 μm or less.
The arithmetic mean height Sa of the surface S is preferably 0.1 μm or more, more preferably 0.3 μm or more, and still more preferably 0.5 μm or more.
The surface area ratio of the surface S of the first resin layer 21 is 0.4 to 8.0 μm at the above ratio Y/X -1 The range of (2) may be appropriately adjusted, and preferably exceeds 1.00. This facilitates formation of appropriate irregularities on the surface S of the first resin layer 21, and can provide more excellent sliding properties to the oil-in-water dispersion type content C. The surface area ratio of the surface S is more preferably 1.01 or more, and still more preferably 1.02 or more.
The surface area ratio of the surface S is preferably 1.10 or less, more preferably 1.09 or less, and further preferably 1.08 or less.
The arithmetic average height Sa and the surface area ratio of the surface S can be adjusted by, for example, the blending amount and the average particle diameter of the filler 21b, and the film forming conditions (thickness, temperature, and the like) of the first resin layer 21. The values of the "arithmetic average height Sa" and the "surface area ratio" referred to herein are values measured under the following conditions using a laser microscope (trade name "OLS-4000", manufactured by olympus corporation).
Magnification of the objective lens: 50 times of
Slope correction: straight line correction
Smoothing correction: median filter 1 time
Cut-off value: λc=80 μm
The ratio Y/X of the surface area ratio Y of the surface S of the first resin layer 21 to X μm of the arithmetic mean height Sa of the surface S of the first resin layer 21 is 0.4 to 8.0 μm -1 . When the ratio Y/X is within the above range, appropriate irregularities are formed on the surface S of the first resin layer 21. If the ratio Y/X is smaller than the lower limit value, the Sa tends to be too large, and the sliding of the content C is hindered. When the ratio Y/X exceeds the upper limit value, sa is small and the contribution to the increase of the surface area ratio is small, so that it is difficult to obtain the effect of maintaining or stabilizing the formed oil film. The ratio Y/X is preferably 0.7. Mu.m -1 The above, more preferably 1.0 μm -1 The above, more preferably 1.2. Mu.m -1 The above. The ratio Y/X is preferably 7.0. Mu.m -1 Hereinafter, more preferably 5.0. Mu.m -1 Hereinafter, it is more preferably 4.0. Mu.m -1 The following is given.
In the second embodiment, the projected area ratio of the convex portion formed by the filler 21b to the surface S of the first resin layer 21 is preferably 8 to 45%. The projected area ratio is a two-dimensional parameter reflecting the number, size, degree of protrusion on the surface S, and the like of the fillers 21b contributing to the formation of the convex portions in the surface S of the first resin layer 21. For example, 1 projected area of the filler 21b depends on the particle diameter of the filler 21b and the degree of protrusion on the surface S, and even if the convex portion is formed by the filler 21b having the same particle diameter, the projected area varies depending on the degree of protrusion. The projected area ratio is calculated by the following equation when the flat portion of the surface S is the area I and the convex portion is the area II. Further, the area I and the area II are determined by binarizing an observation image obtained by a microscope using a threshold value of brightness.
Projected area ratio = area II/(area I + area II) ×100[% ]
When the projection area ratio exceeds the upper limit value, the convex portion becomes excessively large, and the sliding property against the content C tends to be lowered. When the projected area ratio is smaller than the lower limit value, the retaining-stabilizing action of the oil film by the convex portion tends to be insufficient, and the sliding property against the content C tends to be lowered. The projected area ratio is preferably 10% or more, more preferably 12% or more, and still more preferably 15% or more. The projected area ratio is preferably 42% or less, more preferably 40% or less, and further preferably 38% or less.
The first resin layer 21 may further contain an elastomer component from the viewpoint of exhibiting more excellent sliding properties. Examples of the elastomer component include a block copolymer of polypropylene and polyethylene, a block copolymer of polyethylene and ethylene-butene, a block copolymer of polyethylene and ethylene-octene, an ethylene-based elastomer, a propylene-based elastomer, a butene-based elastomer, and Reactor-TPO. The Reactor-TPO (Reactor thermo plastic polyolefin ) is one type of olefin thermoplastic elastomer (TPO) and is composed of polypropylene as a base resin and a rubber component finely dispersed therein, for example, by adding a high concentration of the rubber component at the time of polymerization. Examples of the vinyl elastomer or the propylene elastomer include Tafmer series manufactured by Mitsui chemical Co., ltd. The elastomer component may be used alone in an amount of 1 or in an amount of 2 or more.
The amount of the elastomer component to be added (total amount when the plurality of elastomer components are added) is, for example, 30 parts by mass or less, preferably 1 to 25 parts by mass, more preferably 2 to 20 parts by mass, and still more preferably 3 to 15 parts by mass, relative to 100 parts by mass of the polyolefin resin. The amorphous portion (rubber component) contained in the elastomer component has a property of absorbing oil. Thus, the elastomer component promotes a stable and uniform oil film F O Thereby further improving the slip-off property to the content C.
(second resin layer)
The second resin layer 22 is a layer provided between the first resin layer 21 and the base material 10. By further providing the second resin layer 22, the packaging material 100 can be provided with a function corresponding to the function (heat sealability, heat resistance, impact resistance, oxygen/water vapor barrier property, etc.) of the second resin layer 22. For example, from the viewpoint of improving heat sealability, the second resin layer 22 preferably contains a thermoplastic resin. Specific examples of the thermoplastic resin include polyolefin resins, ethylene- α, β -unsaturated carboxylic acid copolymers or esterified or ionomers thereof, ethylene-vinyl acetate copolymers or saponified products thereof, polyvinyl acetate or saponified products thereof, polycarbonate resins, thermoplastic polyester resins, ABS resins, polyacetal resins, polyamide resins, polyphenylene ether resins, polyimide resins, polyurethane resins, polylactic acid resins, furan resins, and silicone resins. These thermoplastic resins may be used singly or in combination of two or more.
The thickness of the second resin layer 22 may be appropriately set according to the use of the packaging material 100. The thickness of the second resin layer 22 is, for example, 1 to 300. Mu.m, preferably 2 to 200. Mu.m, more preferably 5 to 150. Mu.m, still more preferably 10 to 100. Mu.m.
(substrate)
The base material 10 is not particularly limited as long as it is a material that serves as a support and has durability against heat treatment such as high-temperature retort treatment or boiling treatment, and examples thereof include a resin film, a metal foil, and the like. Examples of the resin film include films containing at least one of polyolefin (e.g., polyethylene (PE), polypropylene (PP), acid-modified polyolefin, polyester (e.g., polyethylene terephthalate (PET)), polyamide (PA), polyvinyl chloride (PVC), cellulose acetate, and cellophane resins. The film may be a stretched film or a non-stretched film. Examples of the metal foil include aluminum foil and nickel foil. The substrate 10 may be a laminate of a plurality of substrates having different materials, or may include a coating layer or a metal deposition layer.
The thickness of the base material 10 may be appropriately set according to the use of the packaging material 100. The thickness of the base material 10 may be, for example, 1 to 500. Mu.m, or 10 to 100. Mu.m.
(adhesive layer)
The adhesive layer 30 adheres the packaging film 20 (laminate of the first resin layer 21 and the second resin layer 22) to the base material 10. The adhesive constituting the adhesive layer 30 is not particularly limited as long as it can adhere the packaging film 20 to the base material 10, and examples of such an adhesive include polyurethane resins obtained by allowing a difunctional or higher isocyanate compound to act on a main agent such as polyester polyol, polyether polyol, acrylic polyol, and carbonate polyol. The various polyols may be used singly or in combination of two or more.
The adhesive layer 30 may contain a carbodiimide compound, an oxazoline compound, an epoxy compound, a phosphorus compound, a silane coupling agent, or the like in the urethane resin for the purpose of promoting adhesion. Other various additives or stabilizers may be blended with the polyurethane resin according to the properties required for the adhesive layer 30.
The thickness of the adhesive layer 30 may be, for example, 1 to 10 μm or 3 to 7 μm from the viewpoint of obtaining desired adhesive strength, follow-up property, workability, and the like.
The base material 10 may be provided with an adhesive primer (anchor coating agent), and as a material thereof, a polyester resin, a polyurethane resin, a polyallylamine resin, a polyethyleneimine resin, a polybutadiene resin, an ethylene-vinyl acetate copolymer, or the like may be used. The adhesive primer may be blended with various curing agents or additives which can be used as an adhesive, if necessary.
< method for producing packaging Material >
Next, a method for manufacturing the above-described packaging material will be described.
The packaging material 100 can be obtained by adhering the packaging material film 20 to the base material 10. Examples of the method for adhering the base material 10 and the packaging film 20 include a lamination method using an adhesive and a lamination method using a heat treatment.
As the lamination method using the adhesive, various known lamination methods such as a dry lamination method, a wet lamination method, and a solvent-free lamination method can be used.
The lamination method by heat treatment is generally the following methods (1) to (4).
(1) And a method of laminating the film 20 for packaging material and the base material 10 by extruding an adhesive resin between them.
(2) A method of co-extruding the packaging film 20 and the adhesive resin and laminating the adhesive resin on the substrate 10 side with the substrate 10.
(3) And (2) a method of bonding the laminate obtained by the method of (1) or (2) by pressing the laminate while heating the laminate by a hot roll.
(4) And (3) a method of further storing the laminate obtained by the method of (1) or (2) under a high-temperature atmosphere or passing the laminate through a drying/baking furnace under a high-temperature atmosphere.
< packaging body >
Next, an embodiment of the package of the present invention will be described with reference to fig. 3. Fig. 3 is a cross-sectional view showing an embodiment of the package of the present invention.
As shown in fig. 3, the package 300 includes a package bag 200 and an oil-in-water dispersion type content C enclosed in the package bag 200. In the package 300, the first resin layer 21 of the packaging film 20 of the package 200 is disposed inside and contacts the oil-in-water dispersed content C.
According to the package 300, the packaging film 20 included in the packaging material 100 forming the packaging bag 200 can impart excellent slip properties to the oil-in-water dispersion type content C in contact with the first resin layer 21 by heat treatment. Therefore, when the package 300 is subjected to a heating treatment such as a high-temperature steaming treatment or a boiling treatment, the oil-in-water dispersion type content C can be easily slipped off when the oil-in-water dispersion type content C is discharged from the package 300 after the package 300 is opened. Therefore, the amount of residual liquid in the content C dispersed in the oil-in-water can be reduced, waste of the content C can be prevented, dirt caused by adhesion of the content C can be prevented, and the discharging operation of the content C can be performed efficiently.
The package 300 may be obtained by forming the package 200 using the packaging material 100, and sealing the oil-in-water dispersion type content C in the package 200.
The embodiments of the present invention have been described in detail above, but the present invention is not limited to the above embodiments. For example, in the above embodiment, the packaging film 20 is constituted by the first resin layer 21 and the second resin layer 22, but the packaging film 20 may be constituted by only the first resin layer 21.
The packaging material 100 includes the adhesive layer 30 for bonding the packaging material film 20 to the base material 10, but the adhesive layer 30 may be omitted if the packaging material film 20 and the base material 10 can be directly melt-bonded.
Examples
The present invention will be described more specifically with reference to examples and comparative examples, but the present invention is not limited to the examples.
The materials used in each experimental example are as follows.
< polyolefin resin >
(A1) Random Polypropylene resin (propylene-ethylene random copolymer, trade name "Prime Polypro F744NP", prime Polymer, inc.)
(A2) Block Polypropylene resin (propylene-ethylene Block copolymer, trade name "Novatec BC5FA", manufactured by Japanese POLYPROPYLENE Co., ltd.)
(A3) Block Polypropylene resin (propylene-ethylene Block copolymer, trade name "Novatec BC3HF", manufactured by Japanese POLYPROPYLENE Co., ltd.)
< filler >
( B1 Acrylic filler (average particle diameter: 3 μm, trade name "UNI-POWDER NMB-0320C", manufactured by ENEOS liquid Crystal Co., ltd )
( B2 Acrylic filler (average particle diameter: 5 μm, trade name "UNI-POWDER NMB-0520", manufactured by ENEOS liquid Crystal Co., ltd )
( B3 Acrylic filler (average particle diameter: 10 μm, trade name "UNI-POWDER NMB-1020", manufactured by ENEOS liquid Crystal Co., ltd )
( B4 Polyethylene filler (average particle diameter: 10 μm, trade name "Mipelon PMPC-1010", sanjing chemical Co., ltd )
( B5 Silica filler (average particle diameter: 10 μm, trade name "TMS-10", manufactured by Tayca Co., ltd )
( B6 Silica filler (average particle diameter: 5 μm, trade name "TMS-05DCA", manufactured by Tayca Co., ltd )
( B7 Silica filler (average particle diameter: 4 μm, trade name "Sunsphere NP30", manufactured by AGC SITECH Co., ltd.) )
( B8 Silica filler (average particle diameter: 10 μm, trade name "Sunsphere NP100", manufactured by AGC SITECH Co., ltd.) )
( B9 Porous silica filler (average particle diameter: 7 μm, trade name "Sunsphere L-71-N", manufactured by AGC SITECH Co., ltd )
( B10 Porous silica filler (average particle diameter: 12 μm, trade name "Sunsphere H-121-N", manufactured by AGC SITECH Co., ltd )
( B11 Silica filler (average particle diameter: 2 μm, trade name "FMB-1650B", manufactured by Japanese POLYPROPYLENE Co., ltd )
( B12 Polyethylene filler (average particle diameter: 30 μm, trade name "Mipelon XM-220UC", sanjing chemical Co., ltd )
< elastomer component >
(C1) Polypropylene-polyethylene block copolymers
(C2) Polypropylene elastomer (trade name "Tafmer PN3560", sanjing chemical Co., ltd.)
(C3) Polyethylene elastomer (trade name "Tafmer A4085S", sanjing chemical Co., ltd.)
< production of packaging Material >
A film for packaging material (sealant film) comprising two layers of a first resin layer having the composition shown in tables 1 to 4 and a second resin layer formed of a block polypropylene resin (A3) was produced using a coextrusion machine. At this time, the mixing ratio of the random polypropylene resin (A1) and the block polypropylene resin (A2) in the first resin layer was 50/50 by mass. Tables 1 and 2 relate to the first invention, and tables 3 and 4 relate to the second invention.
In table 2, the surface properties of the first resin layer were adjusted by mirror polishing (smoothing treatment) in experimental example 29, and by shaping treatment in experimental example 30. In table 4, the surface properties of the first resin layer were adjusted by mirror polishing (smoothing treatment) in experimental example 29, and by shaping treatment in experimental examples 30 to 31.
Subsequently, the obtained film for packaging material and a PET film (trade name "Emblet" manufactured by Unitika Co., ltd.) having a thickness of 38 μm as a base material were dry laminated with a polyurethane-based adhesive (manufactured by Sanchiku chemical Co., ltd.) and aged at 50℃for 5 days to obtain a packaging material. In each example, the first resin layer and the second resin layer were formed so that the total thickness of the first resin layer and the second resin layer was 60 μm.
< determination of arithmetic mean height Sa >
For the packaging materials of each example, the arithmetic average height Sa and the surface area ratio of the first resin layer were measured under the following conditions using a laser microscope (trade name "OLS-4000", manufactured by olympus corporation). The results are shown in tables 3 and 4.
Magnification of the objective lens: 50 times of
Inclination correction: straight line correction
Smoothing correction: median filter 1 time
Cut-off value: λc=80 μm
< measurement of projected area ratio >
For each packaging material, the projected area ratio of the first resin layer was measured by using a digital microscope (trade name "VHX-1000", manufactured by Keyence corporation) in the following order. The results are shown in tables 3 and 4.
(sequence)
a) Image photographing of the surface of the first resin layer was performed at 500 times magnification.
b) Brightness extraction is performed, and a minimum value at which the normal distribution of the flat portion and the normal distribution of the convex portion intersect is adjusted as a threshold value.
c) When the brightness region is a flat portion and the dark brightness region is a convex portion, the threshold value is set to white or more and the threshold value is set to black or less, and binarization is performed.
d) When the filler apex of the convex portion is recognized as bright (white) by halation or the like, correction is performed so that the filler apex is recognized as black as compared with the actual image of a).
e) The area ratio of the area II was calculated from the following equation, with the flat area being the area I (white) and the convex area being the area II (black). The projected area ratio of the convex portion was defined as the projected area ratio.
Projected area ratio = area II/(area I + area II) ×100[% ]
< evaluation of slipperiness of content >
(evaluation of residual liquid after high-temperature steaming treatment)
The packaging materials obtained in each example were evaluated for the sliding property of the contents after the high-temperature retort treatment by the method shown in fig. 4 (a) to 4 (e).
First, 2 sheets of packaging material having a shear of Cheng Zong mm×138mm transverse dimension were prepared. Further, 2 sheets of packaging materials were stacked so that the respective first resin layers were positioned inward, and three sides were sealed by a heat sealer. As described above, as shown in fig. 4 (a), a packaging bag 200 comprising a bag having a sealed portion 200a formed on three sides and one side opened is produced. At this time, the heat sealing of three sides was performed at 190℃under 0.03MPa for 2 seconds, and the width of the sealing portion 200a was 10mm.
Next, as shown in fig. 4 b, 180g of Curry (trade name "pungency in Bon Curry Gold", fat mass 7.0g/180g, manufactured by tsuka food corporation) as content C was poured from the opening of the packaging bag 200.
Thereafter, the opening (the remaining side) is sealed by a heat sealer, and as shown in fig. 4 (c), a sealing portion 200b is formed on the remaining side. Thus, the package 300 having four sides sealed and filled with the content C is produced. At this time, the heat sealing of the opening was performed at 190℃and 0.03MPa for 2 seconds, and the width of the sealing portion was 10mm.
The package 300 thus produced was put into a high-temperature high-pressure cooking and sterilizing apparatus (manufactured by hitachi capitals corporation) and subjected to a high-temperature steam treatment. The high temperature steaming treatment was performed under the following conditions.
Pressure: 0.2MPa
Temperature: 121 DEG C
Processing time: 30 minutes
After the high-temperature steaming treatment, the package 300 was subjected to a hot water ironing treatment (boiling treatment) at 100 ℃ for 5 minutes. Thereafter, as shown in fig. 4 (d), the upper part of the package 300 is cut to form a spout. Next, as shown in fig. 4 (e), the bag was turned upside down, and the spout was held in a state inclined at 45 ° from the horizontal plane for 10 seconds, so that the content C was discharged into the container 400, and the discharge amount was weighed by the scale 500. Further, the residual liquid ratio (%) was calculated from the weighed discharge amount by the following method.
Residual liquid ratio (%) = { (180-discharge amount)/180 } ×100
The same measurement was performed 3 times by replacing the package 300, and the average value of the 3 residual liquid ratios was calculated as the average residual liquid ratio. Further, the sliding property of the content was evaluated based on the average residual liquid ratio by using the following evaluation criteria. The average residual liquid ratio and the results of the slip evaluation of the content are shown in tables 1 to 4.
A: average residual liquid rate is less than 6.5%
B: the average residual liquid rate is more than 6.5% and less than 8.0%
C: the average residual liquid rate is more than 8.0% and less than 10.0%
D: the average residual liquid rate is more than 10.0 percent
(evaluation of appearance after high-temperature steaming treatment)
When the residual liquid rate was measured as described above, the discharge behavior of the content C when the content (curry) C was discharged from the bag was visually observed, and the appearance was also evaluated using the following evaluation criteria. The results are shown in tables 1 to 4.
A: the contents were seen to slip off in a beautiful manner, and the contents hardly adhered to the film for packaging material.
B: the content was found to slip off, and the amount of the content adhered to the packaging film was small.
C: the content was found to slip off, but the amount of the content adhering to the packaging film was large.
D: the contents were not seen to slip off.
< evaluation of surface Property of first resin layer >
(determination of slip angle of Water)
The bag used for evaluating the slipperiness of the content was washed with water, and the moisture was dried. A water droplet at normal temperature was dropped onto the first resin layer (oil film) on the inner surface of the bag, and the angle at which the water droplet started to move was measured using a slide angle meter. The same measurement was performed 3 times with respect to the replacement package 300, and the average value thereof was regarded as the slip angle (°). The results are shown in tables 1 and 2.
Measurement device: KRUSS Co simple contact angle meter DSA25
Liquid amount: 20 mu L
Speed of: 90 DEG/min
(oil film measurement)
The bag used for evaluating the slipperiness of the content was washed with water, and the moisture was dried. The total weight a was obtained by cutting 2 sheets of packaging material constituting the bag into pieces of 10cm in the longitudinal direction and 10cm in the transverse direction, and measuring the weights of the pieces of packaging material in the state where oil films were attached to the pieces of packaging material. Next, the surface of the first resin layer was wiped with isopropyl alcohol (IPA) and dried sufficiently, and then the weight of the first resin layer in which the oil film was removed was measured to obtain a total weight b. Further, the difference (a-b) between a and b is calculated. The replacement package 300 was subjected to this operation 3 times, and the average value thereof was taken as the oil film amount (g/200 cm 2 ). The results are shown in tables 1 and 2.
/>
/>
/>
As is clear from the results shown in tables 1 and 2, the packages obtained in examples 1 to 28 (examples) had a small average residual liquid content, and the packages were also seen as sliding in appearance. In the packages obtained in examples 29 to 31 (comparative examples), the average residual liquid ratio was large, and the appearance was not seen as the sliding of the contents.
As is clear from the results shown in tables 3 and 4, the packages obtained in examples 1 to 28 (examples) had a small average residual liquid ratio, and the packages were also seen to have a slip-off appearance. In the packages obtained in examples 29 to 33 (comparative examples), the average residual liquid ratio was large, and the appearance was not seen as the sliding of the contents.
From the above, it was confirmed that the film for packaging material according to the present invention can impart excellent slip properties to the oil-in-water dispersion type content by heat treatment.
Symbol description
10 base material, 20 film for packaging material, 21 first resin layer, 21a resin composition, 21b filler, 30 adhesive layer, 100 packaging material, 200 packaging bag, 300 packaging body, C content, C O Oil content, S first resin layer surface, F O And (3) an oil film.
Claims (9)
1. A packaging film comprising a first resin layer comprising a polyolefin resin and a filler,
a convex portion is formed on the surface of the first resin layer by the filler,
the sliding angle of the water on the oil film on the surface of the first resin layer measured by the following measurement method is 20 DEG or less,
the measuring method comprises the following steps:
a) Using a packaging material comprising a base material and the packaging material film provided on the base material, preparing a packaging bag formed so that the first resin layer is disposed inside,
b) A package body having the package bag and the oil-in-water dispersion type content enclosed in the package bag is prepared,
c) The package is subjected to a high-temperature steaming treatment and a boiling treatment,
d) The sliding angle of the water on the oil film formed on the surface of the first resin layer was measured using a contact angle meter under the conditions that the liquid amount was 20. Mu.L and the speed was 90 DEG/min.
2. The film for packaging material according to claim 1, wherein the amount of the oil film is 0.2 to 1.2g/200cm 2 。
3. A packaging film comprising a first resin layer comprising a polyolefin resin and a filler, wherein the ratio Y/X of the surface area ratio Y of the surface of the first resin layer to the X [ mu ] m of the arithmetic mean height Sa of the surface of the first resin layer is 0.4-8.0 [ mu ] m -1 。
4. The film for packaging material according to claim 3, wherein the projected area ratio of the convex portion formed by the filler to the surface of the first resin layer is 8 to 45%.
5. The film for packaging material according to any one of claims 1 to 4, wherein the filler comprises a porous filler.
6. The film for packaging material according to any one of claims 1 to 5, wherein the first resin layer further comprises an elastomer component.
7. A packaging material comprising a base material and a packaging film provided on the base material, wherein the packaging film is formed from the packaging film according to any one of claims 1 to 6, and a surface of the packaging film on the side opposite to the base material in the first resin layer is exposed.
8. A packaging bag for containing oil-in-water type contents, which is formed using the packaging material according to claim 7, and in which the first resin layer is disposed inside.
9. A package comprising the package bag of claim 8 and an oil-in-water dispersion type content enclosed in the package bag.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2021083267A JP2022176711A (en) | 2021-05-17 | 2021-05-17 | Film for packaging material, packaging material, packaging bag, and package |
| JP2021-083267 | 2021-05-17 | ||
| JP2021-083264 | 2021-05-17 | ||
| PCT/JP2022/018431 WO2022244587A1 (en) | 2021-05-17 | 2022-04-21 | Packaging material film, packaging material, packaging bag, and package body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117255761A true CN117255761A (en) | 2023-12-19 |
Family
ID=84234048
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202280028038.2A Pending CN117255761A (en) | 2021-05-17 | 2022-04-21 | Film for packaging material, packaging bag, and package |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2022176711A (en) |
| CN (1) | CN117255761A (en) |
-
2021
- 2021-05-17 JP JP2021083267A patent/JP2022176711A/en active Pending
-
2022
- 2022-04-21 CN CN202280028038.2A patent/CN117255761A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| JP2022176711A (en) | 2022-11-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107073910B (en) | The manufacturing method of liquid-repellant resin sheet, molded product and liquid-repellant resin sheet | |
| JP2009512776A (en) | Film, packaging prepared therefrom, and method of use | |
| JP7383233B2 (en) | Resin composition for forming a liquid-repellent layer, and a liquid-repellent film, liquid-repellent laminate, packaging material, and container using the same | |
| CN106715124B (en) | Liquid-repellent resin sheet, and sheet for building material and sheet for packaging material for living goods each using same | |
| CN114728733B (en) | Method for producing package, film for packaging material, and laminate film and packaging material provided with film for packaging material | |
| JP7139824B2 (en) | Liquid-repellent layer-forming resin composition, and liquid-repellent film, liquid-repellent laminate, packaging material, and container using the same | |
| JP7115055B2 (en) | Liquid-repellent layer-forming resin composition, and liquid-repellent film, liquid-repellent laminate, packaging material, and container using the same | |
| JP7225926B2 (en) | Liquid-repellent layer-forming resin composition, and liquid-repellent film, liquid-repellent laminate, packaging material, and container using the same | |
| CN117255761A (en) | Film for packaging material, packaging bag, and package | |
| WO2022244587A1 (en) | Packaging material film, packaging material, packaging bag, and package body | |
| US20240017532A1 (en) | Packaging material film and packaging material, packaging bag, and packaging comprising same | |
| JP2022176708A (en) | Film for packaging material, packaging material, packaging bag, and package | |
| EP3854846A1 (en) | Liquid repellent layer-forming resin composition, and liquid repellent film, liquid repellent laminate, packaging material, and container using same | |
| JP7456143B2 (en) | Resin composition for forming liquid-repellent layer, and liquid-repellent film, liquid-repellent laminate, and packaging material using the same | |
| JP7326909B2 (en) | Liquid-repellent laminate and packaging material | |
| JP2022188380A (en) | Packaging film, packaging material with the same, packaging bag and package | |
| JP7331457B2 (en) | Liquid-repellent resin composition, and liquid-repellent film, liquid-repellent laminate and packaging material using the same | |
| CN112703224B (en) | Resin composition for forming lyophobic layer, lyophobic film using same, lyophobic laminate, packaging material, and container | |
| JP7326814B2 (en) | Liquid-repellent film, liquid-repellent laminate and packaging material | |
| JP2022034242A (en) | Method for manufacturing package, film for packaging material, and laminated film and packaging material provided with the film | |
| JP2021045851A (en) | Barrier film and pouch |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |