WO2022215602A1 - 積層体及びロール - Google Patents
積層体及びロール Download PDFInfo
- Publication number
- WO2022215602A1 WO2022215602A1 PCT/JP2022/015575 JP2022015575W WO2022215602A1 WO 2022215602 A1 WO2022215602 A1 WO 2022215602A1 JP 2022015575 W JP2022015575 W JP 2022015575W WO 2022215602 A1 WO2022215602 A1 WO 2022215602A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- coating layer
- laminate
- sample
- particles
- paper
- Prior art date
Links
- 239000011247 coating layer Substances 0.000 claims abstract description 74
- 239000002245 particle Substances 0.000 claims abstract description 51
- 239000000758 substrate Substances 0.000 claims abstract description 34
- 229920005672 polyolefin resin Polymers 0.000 claims abstract description 13
- 239000010410 layer Substances 0.000 claims description 29
- 239000000463 material Substances 0.000 claims description 27
- 229920000098 polyolefin Polymers 0.000 claims description 12
- 238000005259 measurement Methods 0.000 claims description 11
- 238000007740 vapor deposition Methods 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 5
- 239000000123 paper Substances 0.000 description 66
- 239000000835 fiber Substances 0.000 description 26
- 239000004927 clay Substances 0.000 description 13
- 229910052751 metal Inorganic materials 0.000 description 11
- 239000002184 metal Substances 0.000 description 11
- 239000002585 base Substances 0.000 description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- 229920003023 plastic Polymers 0.000 description 8
- 239000004033 plastic Substances 0.000 description 8
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 6
- 239000005977 Ethylene Substances 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 6
- 239000007787 solid Substances 0.000 description 6
- 239000000126 substance Substances 0.000 description 6
- 239000011248 coating agent Substances 0.000 description 5
- 238000000576 coating method Methods 0.000 description 5
- 239000006185 dispersion Substances 0.000 description 5
- -1 ethylene, propylene, acrylic acid Chemical class 0.000 description 5
- 150000003839 salts Chemical class 0.000 description 5
- 238000004804 winding Methods 0.000 description 5
- 238000001035 drying Methods 0.000 description 4
- 238000011156 evaluation Methods 0.000 description 4
- 229920000554 ionomer Polymers 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000004806 packaging method and process Methods 0.000 description 4
- 238000007719 peel strength test Methods 0.000 description 4
- 229920000573 polyethylene Polymers 0.000 description 4
- 239000001993 wax Substances 0.000 description 4
- 239000004698 Polyethylene Substances 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 239000011888 foil Substances 0.000 description 3
- 150000002739 metals Chemical class 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 229920006242 ethylene acrylic acid copolymer Polymers 0.000 description 2
- 125000000524 functional group Chemical group 0.000 description 2
- 229910052809 inorganic oxide Inorganic materials 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 229920003145 methacrylic acid copolymer Polymers 0.000 description 2
- 239000000178 monomer Substances 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000005022 packaging material Substances 0.000 description 2
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 239000002028 Biomass Substances 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- 239000004716 Ethylene/acrylic acid copolymer Substances 0.000 description 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 1
- PTFCDOFLOPIGGS-UHFFFAOYSA-N Zinc dication Chemical compound [Zn+2] PTFCDOFLOPIGGS-UHFFFAOYSA-N 0.000 description 1
- 229920006243 acrylic copolymer Polymers 0.000 description 1
- 229910001413 alkali metal ion Inorganic materials 0.000 description 1
- 229910001420 alkaline earth metal ion Inorganic materials 0.000 description 1
- DQXBYHZEEUGOBF-UHFFFAOYSA-N but-3-enoic acid;ethene Chemical compound C=C.OC(=O)CC=C DQXBYHZEEUGOBF-UHFFFAOYSA-N 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 238000005229 chemical vapour deposition Methods 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 229920001038 ethylene copolymer Polymers 0.000 description 1
- 239000005038 ethylene vinyl acetate Substances 0.000 description 1
- 238000009459 flexible packaging Methods 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 229920002313 fluoropolymer Polymers 0.000 description 1
- 239000004811 fluoropolymer Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000011086 glassine Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229920001903 high density polyethylene Polymers 0.000 description 1
- 239000004700 high-density polyethylene Substances 0.000 description 1
- 239000002655 kraft paper Substances 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium 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
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 229940117841 methacrylic acid copolymer Drugs 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 238000005240 physical vapour deposition Methods 0.000 description 1
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin 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
Images
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H19/00—Coated paper; Coating material
- D21H19/10—Coatings without pigments
- D21H19/14—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12
- D21H19/20—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12 comprising macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D21H19/22—Polyalkenes, e.g. polystyrene
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H19/00—Coated paper; Coating material
- D21H19/36—Coatings with pigments
- D21H19/44—Coatings with pigments characterised by the other ingredients, e.g. the binder or dispersing agent
- D21H19/56—Macromolecular organic compounds or oligomers thereof obtained by reactions only involving carbon-to-carbon unsaturated bonds
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H19/00—Coated paper; Coating material
- D21H19/80—Paper comprising more than one coating
- D21H19/82—Paper comprising more than one coating superposed
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H19/00—Coated paper; Coating material
- D21H19/80—Paper comprising more than one coating
- D21H19/82—Paper comprising more than one coating superposed
- D21H19/824—Paper comprising more than one coating superposed two superposed coatings, both being non-pigmented
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H19/00—Coated paper; Coating material
- D21H19/80—Paper comprising more than one coating
- D21H19/82—Paper comprising more than one coating superposed
- D21H19/828—Paper comprising more than one coating superposed two superposed coatings, the first applied being non-pigmented and the second applied being pigmented
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
- D21H27/10—Packing paper
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N19/00—Investigating materials by mechanical methods
- G01N19/04—Measuring adhesive force between materials, e.g. of sealing tape, of coating
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/80—Packaging reuse or recycling, e.g. of multilayer packaging
Definitions
- the present disclosure relates to a laminate and a roll comprising a paper substrate and a coating layer containing polyolefin resin.
- Patent Document 1 describes a packaging paper having at least one heat-seal layer on at least one side of a paper substrate.
- Fiber detachment is particularly likely to occur after the rolled product has been exposed to temperatures of 40°C or more.
- the heat seal layer in order to further reduce the plastic ratio in the packaging material, when the heat seal layer is formed by coating, the heat seal layer is in contact with the paper base material at a temperature of 40 ° C. or higher.
- the adhesiveness to the paper base increases and the fibers are likely to peel off.
- the temperature inside the container may reach about 60° C. depending on the route of the ship.
- the present disclosure provides laminates and rolls with less fiber peeling of the paper substrate, even after exposure to temperatures of 40°C or more.
- a laminate according to one aspect of the present disclosure includes a paper substrate, a coating layer containing a polyolefin resin, and a plurality of particles fixed to the coating layer, and the particle diameter of the particles is greater than the thickness of According to the laminate, since the material of the substrate is paper, the amount of plastic material used can be reduced. In addition, according to the laminate, the protruding particles reduce the contact area between the paper substrate and the coating layer. It is possible to suppress the increase in the adhesion of the coating layer to. As a result, even after exposure to a temperature of 40° C. or higher, peeling of fibers can be suppressed, and as a result, poor appearance and reduction in heat seal strength can be suppressed.
- the laminate according to the present disclosure is useful for packaging bags such as pillow bags and standing pouches.
- the laminate preferably has a peel strength of 0.1 N/15 mm or less measured through the following steps.
- ⁇ Measurement of peel strength> (a1) A step of storing the sample in a constant temperature bath set at 40° C. for 3 days while applying a load of 100 kgf to the sample in which 5 layers of the laminate are stacked in the same direction. (b1) A step of collectively peeling off the two laminates from the sample after the step (a1).
- (c1) A step of performing a T-type peel test on the two laminates at a peel speed of 300 mm/min.
- a laminate whose peel strength measured in the step (c1) is within the above range is less likely to have fiber peeling even after a heat history of 40 ° C. As a result, poor appearance and a decrease in heat seal strength are even more severe. can be suppressed to
- the laminate preferably has a heat seal strength of 2.1 N/15 mm or more, which is measured through the following steps.
- ⁇ Measurement of heat seal strength> (a2) A step of storing the sample in a constant temperature bath set at 40° C. for 3 days with a load of 100 kgf applied to the sample in which 5 layers of the laminate are stacked in the same direction. (b2) A step of separating the two laminates from the sample after the step (a2).
- (c2) A step of heat-sealing the coating layers of the two laminates under the conditions of a pressure of 0.2 MPa, a temperature of 120° C., and a time of 1 second.
- a laminate whose heat seal strength measured through the above process is within the above range has sufficiently suppressed fiber peeling even after a heat history of 40°C, and has sufficient heat seal strength.
- the material of the particles is, for example, one selected from the group consisting of polyolefins, partially modified products thereof, and paraffins. Since the above materials have good compatibility with the coating layer containing the polyolefin resin, the gas barrier properties of the coating layer, etc. are less likely to deteriorate.
- the laminate may further include a vapor deposition layer between the paper substrate and the coating layer.
- the ratio A/B between the mass A of the coating layer and the mass B of the particles is preferably 100/20 to 100/0.2. When this ratio is 100/20 or more, the coating layer tends to exhibit sufficient heat seal strength. There is a tendency.
- a roll according to one aspect of the present disclosure is obtained by winding the laminate. According to this roll, even after being exposed to a temperature of 40° C. or higher, peeling of fibers can be suppressed, and as a result, poor appearance and reduction in heat seal strength can be suppressed.
- laminates and rolls are provided that exhibit less fiber peeling of the paper substrate even after being exposed to temperatures of 40°C or more.
- FIG. 1 is a cross-sectional view schematically showing one embodiment of the laminate according to the present disclosure.
- FIG. 2 is a cross-sectional view schematically showing another embodiment of the laminate according to the present disclosure.
- FIG. 3(a) is a cross-sectional view schematically showing a sample housed in a constant temperature bath in a peel strength test and a heat seal strength test in the present disclosure, and FIG. 3(b) is a peel strength test. It is a sectional view showing a state typically.
- FIG. 4(a) is a cross-sectional view schematically showing a sample subjected to measurement of heat seal strength in the present disclosure, and FIG. 4(b) schematically shows how the heat seal strength test is performed. It is a sectional view.
- FIG. 5 is a cross-sectional view schematically showing another embodiment of the laminate according to the present disclosure.
- FIG. 1 is a cross-sectional view schematically showing a laminate according to this embodiment.
- a laminate 10 shown in this figure comprises a paper substrate 1 , a coating layer 2 containing polyolefin resin, and a plurality of particles 5 fixed to the coating layer 2 .
- the particle size of the particles 5 is larger than the thickness of the coating layer 2 .
- the coating layer 2 is formed by, for example, applying a coating liquid containing a polyolefin resin, particles 5 and a solvent and then removing the solvent by heating.
- the laminate 10 has one surface composed of the paper substrate 1 and the other surface composed of the coating layer 2 and a plurality of particles 5 fixed thereto.
- the amount of plastic material used can be reduced compared to a laminate whose material of the base material is plastic. Further, according to the laminate 10, as shown in FIG. 1, the particles 5 protrude from the surface of the coating layer 2, so that the contact area of the coating layer 2 with the paper substrate 1 can be reduced. For this reason, even if the paper substrate 1 and the coating layer 2 face each other by stacking the laminate 10 or winding it into a roll, the adhesion of the coating layer 2 to the paper substrate 1 is maintained. It is possible to suppress the increase in strength and to highly suppress fiber peeling. Each configuration of the laminate 10 will be described below.
- Paper substrate Specific examples of paper that can be used as the paper substrate 1 include woodfree paper, special woodfree paper, coated paper, art paper, cast coated paper, imitation paper, kraft paper, and glassine paper.
- the basis weight (mass per unit area) of the paper base material 1 is, for example, 10 to 1000 g/m 2 .
- the basis weight of packaging paper that has high barrier properties, water repellency and oil repellency and that can be used for flexible packaging is, for example, 20 to 500 g/m 2 , 25 to 120 g/m 2 or 30 to 95 g/m 2 .
- a clay coat layer may be provided on the paper substrate 1 in order to prevent the coating layer 2 containing the polyolefin resin from soaking into the paper substrate 1 .
- the laminate 20 shown in FIG. 2 has the clay coat layer 3 interposed between the paper substrate 1 and the coating layer 2 .
- the coating layer 2 is, for example, a layer that imparts sealing properties by heat sealing in the laminate 10, and contains a polyolefin resin.
- Polyolefin resins include copolymers of ethylene, propylene, acrylic acid, methacrylic acid, maleic anhydride, vinyl acetate, styrene, urethane-based compounds, fluorine-based compounds, and modified products thereof. It is preferable to use a polyolefin resin containing a polar functional group from the viewpoint of improving adhesion to the paper substrate 1, and from the viewpoint of water resistance, oil resistance, heat sealability and metal adhesion. , ionomers are preferably used.
- ionomer is a general term for synthetic resins in which macromolecules are aggregated using the cohesive force of metal ions, and is a resin in which acrylic acid or methacrylic acid is combined with ethylene or the like. That is, metal salts of ethylene/methacrylic acid copolymers, metal salts of ethylene/acrylic copolymers, metal salts of ethylene/urethane copolymers, and metal salts of ethylene/fluoropolymer copolymers are all called an ionomer.
- Salt-forming metals include, for example, alkali metal ions and alkaline earth metal ions, specifically sodium, potassium, calcium, magnesium and zinc ions.
- the ionomer is preferably a self-emulsifying emulsion that is a metal salt of an ethylene/acrylic acid copolymer or an ethylene/methacrylic acid copolymer.
- the thickness T of the coating layer 2 is preferably 0.1 to 10 ⁇ m, more preferably 1 to 5 ⁇ m.
- the thickness T of the coating layer 2 can be measured by observing the cross section of the laminate 10 with an optical microscope or SEM.
- the coating layer 2 tends to exhibit sufficient heat seal strength compared to when the thickness is less than 0.1 ⁇ m.
- the amount of plastic material (polyolefin resin) used tends to be reduced compared to the case where the thickness exceeds 10 ⁇ m.
- a plurality of particles 5 are fixed to the coating layer 2 and have a feature that the particle diameter thereof is larger than the thickness of the coating layer 2 .
- the particle size of the particles 5 can be measured by the Coulter Counter method.
- the particle size R of the particles 5 (the particle size R shown in FIG. 1) is preferably 0.2 to 12 ⁇ m, more preferably 1 ⁇ m, on the premise that it is larger than the thickness T of the coating layer 2 after drying. .2 to 6.5 ⁇ m.
- the particle size R is 0.2 ⁇ m or more, the thickness of the coating layer 2 can be increased to a certain extent, so that the coating layer 2 tends to be sufficiently heat-sealable.
- the particle size R is 12 ⁇ m or less, for example, there is a tendency to suppress the problem of clogging of the plate used for coating with the particles 5 .
- the ratio R/T of the particle size R of the particles 5 to the thickness T of the coating layer 2 is, for example, 1.05 to 2.0, 1.1 to 1.5 or 1.1 to 1.3. There may be. When this value is 1.05 or more, fiber peeling tends to be suppressed. In addition, when the coating layer 2 contains particles smaller than the thickness T, the particles do not correspond to the particles 5 .
- the material of the particles 5 is one selected from the group consisting of polyolefins, partially modified polyolefins, and paraffins. In order to reduce adhesion to the paper substrate 1, the particles 5 preferably have few polar functional groups on their surfaces.
- the polyolefin the same one that can be used for the coating layer 2 may be used. From the viewpoint of improving the barrier properties of the laminate 10, the material of the particles 5 is preferably high-density polyethylene.
- the particles 5 may contain the same monomer constituent units as the coating layer 2 or may contain different monomer constituent units from the coating layer 2 .
- synthetic wax such as polyolefin wax (polyethylene or polypropylene) or natural wax such as paraffin wax may be used. Since the polyolefin wax has a smaller molecular weight and a lower viscosity than the polyolefin used for the coating layer 2, it is possible to further suppress fiber peeling.
- the ratio A/B between the mass A of the coating layer 2 and the mass B of the particles 5 is preferably 100/20 to 100/0.2, more preferably 100/20 to 100/0.3. When the ratio is 100/20 or more, the coating layer 2 tends to exhibit sufficient heat seal strength. tend to be able.
- a coating layer 2 can be provided by applying a coating liquid containing a polyolefin resin, particles 5 and a solvent to one surface of the paper base material 1 and drying it.
- the coating device used to form the coating layer 2 include an air knife coater, blade coater, gravure coater, rod blade coater, roll coater, reverse roll coater, bar coater, curtain coater, die slot coater, Champlex. Coaters, metering blade type size press coaters, short dwell coaters, spray coaters, gate roll coaters, and lip coaters.
- the laminate 10 is capable of suppressing fiber peeling even after exposure to temperatures of 40° C. or more in a stacked or rolled state, resulting in poor appearance and reduced heat seal strength. It has the characteristic of being able to suppress the decrease. Such properties can be confirmed by conducting the following peel strength test or heat seal strength test.
- the laminate 10 preferably has a peel strength of 0.1 N/15 mm or less, and may be 0.08 N/15 mm or less, or 0.05 N/15 mm or less, measured through the following steps. The lower limit of this value is, for example, 0.01N/15mm.
- ⁇ Measurement of peel strength> (a1) A step of storing the sample S1 in a constant temperature bath set at 40° C. for 3 days while a load of 100 kgf is applied to the sample S in which five laminates 10 are stacked in the same direction. (b1) A step of collectively peeling off the two laminates from the sample S1 after the step (a1). (c1) A step of performing a T-type peel test on the two laminates at a peel speed of 300 mm/min.
- FIG. 3(a) is a cross-sectional view schematically showing the sample S1.
- FIG. 3(b) is a cross-sectional view schematically showing how the step (c1) is carried out.
- the paper substrate 1 of one laminate 10 of the laminate S2 and the coating layer 2 of the other laminate 10 are separated at the interface. .
- a peel strength of 0.1 N/15 mm or less means that the adhesion of the coating layer 2 to the paper substrate 1 is sufficiently low even after the step (a1). If the peel strength is 0.1 N/15 mm or less, the occurrence of fiber peeling can be sufficiently suppressed.
- the set temperature of the constant temperature bath may be set to 60°C instead of 40°C.
- the peel strength measured in step (c1) is preferably maintained at 0.1 N/15 mm or less, and may be 0.08 N/15 mm or less or 0.03 N/15 mm or less. The lower limit of this value is, for example, 0.01N/15mm.
- a peel strength of 0.1 N/15 mm or less means that the adhesion of the coating layer 2 to the paper substrate 1 is sufficiently low even after a heat history of 3 days at 60°C.
- the laminate 10 preferably has a heat seal strength of 2.1 N/15 mm or more, and may be 2.5 N/15 mm or more, or 2.9 N/15 mm or more, as measured through the following steps.
- the upper limit of this value is, for example, 7.0N/15mm.
- ⁇ Measurement of heat seal strength> (a2) A step of storing the sample S1 in a constant temperature bath set at 40° C. for 3 days while a load of 100 kgf is applied to the sample S1 in which five laminates 10 are stacked in the same direction. (b2) A step of separating the two laminates from the sample S1 after the step (a2).
- (c2) A step of heat-sealing the coating layers of the two laminates under the conditions of a pressure of 0.2 MPa, a temperature of 120° C., and a time of 1 second.
- (d2) A step of subjecting the sample S3 obtained in the step (c2) to a T-type peel test at a peel rate of 300 mm/min.
- FIG. 4(a) is a cross-sectional view schematically showing sample S3.
- the sample S3 has a heat-sealed portion 8 in which the coating layer 2 of one laminate 10 and the coating layer 2 of another laminate 10 are fused by heat.
- FIG. 4(b) is a cross-sectional view schematically showing how the step (d2) is carried out.
- the sample S3 is peeled off at the heat-sealed portion 8.
- a heat seal strength of 2.1 N/15 mm or more means that adhesion of paper fibers to the surface of the coating layer 2 due to fiber peeling is sufficiently small even after the steps (a2) and (b2). do.
- the set temperature of the constant temperature bath may be set to 60°C instead of 40°C.
- the measured heat seal strength is preferably 1.5 N/15 mm or more, and may be 1.8 N/15 mm or more or 2.4 N/15 mm or more.
- the upper limit of this value is, for example, 5.0N/15mm.
- a heat seal strength of 1.5 N/15 mm or more means that fiber peeling is sufficiently suppressed even after a heat history of 3 days at 60° C., and sufficient heat seal strength can be secured.
- a roll may be produced by winding the laminate 10 .
- the paper substrate 1 may be wound on the outside, or the coating layer 2 may be wound on the outside.
- Particles 5 contained in laminate 10 may be deformed by the winding pressure.
- laminates according to the present disclosure may further include layers other than the layers described above.
- a laminate 30 shown in FIG. 5 includes a vapor deposition layer 4 between the clay coat layer 3 and the coating layer 2 .
- Examples of the vapor deposition layer 4 include a metal foil, or a vapor deposition layer of inorganic oxides or metals.
- Examples of metal foil include aluminum foil.
- Examples of inorganic oxides include aluminum oxide, silicon oxide, magnesium oxide, and tin oxide.
- Examples of metals include aluminum.
- the deposited layer 4 can be formed by, for example, physical vapor deposition, chemical vapor deposition, or the like.
- the water vapor permeation amount of the laminate 30 is, for example, 5 g/m 2 ⁇ day or less, and may be 2.5/m 2 ⁇ day or less, or 2.1 g/m 2 ⁇ day or less.
- the oxygen permeation amount of the laminate 20 is, for example, 1 cc/m 2 ⁇ atm ⁇ day or less, 0.5 cc/m 2 ⁇ atm ⁇ day or less, or even 0.2 cc/m 2 ⁇ atm ⁇ day or less. good.
- the laminate according to the present disclosure may further include, for example, a printed layer (not shown) on the surface of the paper substrate 1 opposite to the coating layer 2 .
- a printed layer it is preferable to use printing ink that does not contain chlorine from the viewpoint of preventing the printing layer from being colored or giving off an odor when it is remelted.
- a biomass material for the compound contained in the printing ink from the viewpoint of environmental friendliness.
- Example 1 A laminate was produced using the following materials. ⁇ Paper base material: clay coated paper (basis weight: 55 g/m 2 , thickness: 50 ⁇ m) ⁇ Coating layer: Water-based polyolefin dispersion (Chemipearl S100, manufactured by Mitsui Chemicals, Inc.) ⁇ Particles ... polyethylene particles (Chemipearl W300, manufactured by Mitsui Chemicals, average particle size: 3 ⁇ m) Chemipearl S100 and Chemipearl W300 were blended so that the solid content ratio was 100/2, and coated on clay coated paper so that the thickness of Chemipearl S100 after drying was 2.5 ⁇ m, as shown in FIG. A laminate having the structure shown was obtained.
- ⁇ Paper base material clay coated paper (basis weight: 55 g/m 2 , thickness: 50 ⁇ m)
- Coating layer Water-based polyolefin dispersion (Chemipearl S100, manufactured by Mitsui Chemicals,
- Example 2 A laminate according to Example 2 was obtained in the same manner as in Example 1, except that the following materials were used for the coating layer.
- Coating layer ethylene-vinyl acetate dispersion (Chemipearl V200, manufactured by Mitsui Chemicals, Inc.)
- Example 3 A laminate according to Example 3 was prepared in the same manner as in Example 1, except that Chemipearl S100 and Chemipearl W300 were blended at a solid content ratio of 100/0.3 and coated on clay-coated paper. Obtained.
- Example 4 A laminate according to Example 4 was prepared in the same manner as in Example 1, except that Chemipearl S100 and Chemipearl W300 were blended at a solid content ratio of 100/1.5 and coated on clay-coated paper. Obtained.
- Example 5 A laminate according to Example 5 was prepared in the same manner as in Example 1, except that Chemipearl S100 and Chemipearl W300 were blended at a solid content ratio of 100/3.5 and coated on clay-coated paper. Obtained.
- Example 6 A laminate according to Example 6 was prepared in the same manner as in Example 1 except that Chemipearl S100 and Chemipearl W300 were blended so that the solid content ratio was 100/7.5, and the laminate was coated on clay-coated paper. Obtained.
- Example 7 A laminate according to Example 7 was obtained in the same manner as in Example 1 except that Chemipearl S100 and Chemipearl W300 were blended so that the solid content ratio was 100/20, and the mixture was coated on clay-coated paper. .
- Example 8 A laminate was produced using the following materials. ⁇ Paper base material: clay coated paper (basis weight: 55 g/m 2 , thickness: 50 ⁇ m) ⁇ Anchor coat layer: water-based polyolefin dispersion (Chemipearl S100, manufactured by Mitsui Chemicals, Inc.) ⁇ Vapor deposition layer: aluminum (thickness: 50 nm) ⁇ Coating layer: Water-based polyolefin dispersion (Chemipearl S100, manufactured by Mitsui Chemicals, Inc.) ⁇ Particles ... polyethylene particles (Chemipearl W300, manufactured by Mitsui Chemicals, average particle size: 3 ⁇ m)
- Comparative example 1 A laminate according to Comparative Example 1 was obtained in the same manner as in Example 1, except that no particles were used.
- Comparative example 2 A laminate according to Comparative Example 2 was obtained in the same manner as in Example 1, except that the water-based polyolefin dispersion was coated on clay-coated paper so that the thickness after drying was 5.0 ⁇ m.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Biochemistry (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Physics & Mathematics (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Laminated Bodies (AREA)
- Paper (AREA)
- Wrappers (AREA)
Abstract
Description
<剥離強度の測定>
(a1)当該積層体を同じ向きに5枚重ねた試料に100kgfの荷重をかけた状態で、40℃に設定された恒温槽内に3日間にわたって当該試料を収容する工程。
(b1)上記(a1)工程後の当該試料から二枚の積層体をまとめて剥離する工程。
(c1)上記二枚の積層体について剥離速度300mm/分でT型剥離試験を実施する工程。
<ヒートシール強度の測定>
(a2)当該積層体を同じ向きに5枚重ねた試料に100kgfの荷重をかけた状態で、40℃に設定された恒温槽内に3日間にわたって当該試料を収容する工程。
(b2)上記(a2)工程後の当該試料から二枚の積層体をそれぞれ剥離する工程。
(c2)上記二枚の積層体の塗工層同士を圧力0.2MPa、温度120℃、時間1秒の条件でヒートシールする工程。
(d2)上記(c2)工程で得られた試料について剥離速度300mm/分でT型剥離試験を実施する工程。
図1は、本実施形態に係る積層体を模式的に示す断面図である。この図に示す積層体10は、紙基材1と、ポリオレフィン樹脂を含む塗工層2と、塗工層2に固定されている複数の粒子5とを備える。粒子5の粒径は塗工層2の厚さよりも大きい。塗工層2は、例えば、ポリオレフィン樹脂と粒子5と溶剤とを含む塗液を塗工した後、加熱によって溶剤を除去することによって形成される。積層体10は一方の表面が紙基材1で構成されており、他方の表面が塗工層2と、これに固定された複数の粒子5とによって構成されている。
紙基材1として使用し得る紙の具体例として、上質紙、特殊上質紙、コート紙、アート紙、キャストコート紙、模造紙、クラフト紙及びグラシン紙が挙げられる。紙基材1の坪量(単位面積あたりの質量)は、例えば、10~1000g/m2である。バリア性、撥水性及び撥油性を高度に備え、軟包装にも使用できる包装用紙の坪量は、例えば、20~500g/m2であり、25~120g/m2又は30~95g/m2であってもよい。紙基材1へのポリオレフィン樹脂を含む塗工層2の染み込みを防ぐために、紙基材1上にクレーコート層を設けてもよい。図2に示す積層体20は、紙基材1と塗工層2との間にクレーコート層3が介在している。
塗工層2は、例えば、積層体10においてヒートシールによる封止性を付与する層であり、ポリオレフィン樹脂を含有する。ポリオレフィン樹脂としては、エチレン、プロピレン、アクリル酸、メタクリル酸、無水マレイン酸、酢酸ビニル、スチレン、ウレタン系化合物、フッ素系化合物等の共重合体やその変性体が挙げられる。ポリオレフィン樹脂は、紙基材1との密着性を向上させる観点から極性をもつ官能基を含んでいるものを使用することが好ましく、耐水性、耐油性、ヒートシール性及び金属接着性の観点から、アイオノマーを用いることが好ましい。
粒子5は、塗工層2に複数固定され、その粒径は塗工層2の厚さよりも大きい特徴を備える。粒子5の粒径は、コールターカウンター法により測定することができる。粒子5の粒径R(図1に示す粒径R)は、乾燥後の塗工層2の厚さTよりも大きいことを前提に、好ましくは0.2~12μmであり、より好ましくは1.2~6.5μmである。粒径Rが0.2μm以上であることで、これに伴って塗工層2の厚さもある程度厚くできるため、塗工層2のヒートシール性を十分に確保できる傾向にある。他方、粒径Rが12μm以下であることで、例えば、塗工に使用する版に粒子5が詰まる不具合を抑制できる傾向にある。
紙基材1の一方の面に、ポリオレフィン樹脂と粒子5と溶剤とを含む塗工液を塗工し、乾燥することで塗工層2を設けることができる。塗工層2の形成に使用する塗工装置の具体例として、エアーナイフコーター、ブレードコーター、グラビアコーター、ロッドブレードコーター、ロールコーター、リバースロールコーター、バーコーター、カーテンコーター、ダイスロットコーター、チャンプレックスコーター、メータリングブレード式のサイズプレスコーター、ショートドウェルコーター、スプレーコーター、ゲートロールコーター、リップコーターが挙げられる。
積層体10は、重ね合わされたり、ロール状に巻き取られたりした状態で40℃又はこれを超える温度に晒された後においても、繊維剥がれを抑制でき、その結果、外観不良及びヒートシール強度の低下を抑制することができるという特性を有する。かかる特性は以下の剥離強度試験又はヒートシール強度試験を実施することによって確認することができる。
積層体10は、以下の工程を経て測定される剥離強度が好ましくは0.1N/15mm以下であり、0.08N/15mm以下又は0.05N/15mm以下であってもよい。この値の下限値は、例えば、0.01N/15mmである。
<剥離強度の測定>
(a1)積層体10を同じ向きに5枚重ねた試料Sに100kgfの荷重をかけた状態で、40℃に設定された恒温槽内に3日間にわたって試料S1を収容する工程。
(b1)上記(a1)工程後の試料S1から二枚の積層体をまとめて剥離する工程。
(c1)上記二枚の積層体について剥離速度300mm/分でT型剥離試験を実施する工程。
積層体10は、以下の工程を経て測定されるヒートシール強度が好ましくは2.1N/15mm以上であり、2.5N/15mm以上又は2.9N/15mm以上であってもよい。この値の上限値は、例えば、7.0N/15mmである。
<ヒートシール強度の測定>
(a2)積層体10を同じ向きに5枚重ねた試料S1に100kgfの荷重をかけた状態で、40℃に設定された恒温槽内に3日間にわたって試料S1を収容する工程。
(b2)上記(a2)工程後の試料S1から二枚の積層体をそれぞれ剥離する工程。
(c2)上記二枚の積層体の塗工層同士を圧力0.2MPa、温度120℃、時間1秒の条件でヒートシールする工程。
(d2)上記(c2)工程で得られた試料S3について剥離速度300mm/分でT型剥離試験を実施する工程。
積層体10を巻き取ることによって、ロールを作製してもよい。ロールを作製するにあたり、紙基材1が外側になるように巻き取っても、塗工層2が外側になるように巻き取ってもよい。積層体10に含まれる粒子5はその巻き取り圧によって変形してもよい。
以下の材料を使用して積層体を作製した。
・紙基材…クレーコート紙(坪量:55g/m2、厚さ:50μm)
・塗工層…水系ポリオレフィンディスパーション(ケミパールS100、三井化学社製)
・粒子…ポリエチレン系粒子(ケミパールW300、三井化学社製、平均粒径:3μm)
ケミパールS100と、ケミパールW300とを固形分比で100/2となるように配合し、クレーコート紙上にケミパールS100の乾燥後の厚さが2.5μmとなるように塗工することによって図2に示す構成の積層体を得た。
塗工層に以下の材料を使用したこと以外は、実施例1と同様にして実施例2に係る積層体を得た。
・塗工層…エチレン-酢酸ビニル系ディスパーション(ケミパールV200、三井化学社製)
ケミパールS100と、ケミパールW300とを固形分比で100/0.3となるように配合し、クレーコート紙上に塗工したこと以外は、実施例1と同様にして実施例3に係る積層体を得た。
ケミパールS100と、ケミパールW300とを固形分比で100/1.5となるように配合し、クレーコート紙上に塗工したこと以外は、実施例1と同様にして実施例4に係る積層体を得た。
ケミパールS100と、ケミパールW300とを固形分比で100/3.5となるように配合し、クレーコート紙上に塗工したこと以外は、実施例1と同様にして実施例5に係る積層体を得た。
ケミパールS100と、ケミパールW300とを固形分比で100/7.5となるように配合し、クレーコート紙上に塗工したこと以外は、実施例1と同様にして実施例6に係る積層体を得た。
ケミパールS100と、ケミパールW300とを固形分比で100/20となるように配合し、クレーコート紙上に塗工したこと以外は、実施例1と同様にして実施例7に係る積層体を得た。
以下の材料を使用して積層体を作製した。
・紙基材…クレーコート紙(坪量:55g/m2、厚さ:50μm)
・アンカーコート層…水系ポリオレフィンディスパーション(ケミパールS100、三井化学社製)
・蒸着層…アルミニウム(厚さ:50nm)
・塗工層…水系ポリオレフィンディスパーション(ケミパールS100、三井化学社製)
・粒子…ポリエチレン系粒子(ケミパールW300、三井化学社製、平均粒径:3μm)
粒子を使用しなかったこと以外は、実施例1と同様にして比較例1に係る積層体を得た。
クレーコート紙上に、水系ポリオレフィンディスパーションを乾燥後の厚さが5.0μmとなるように塗工すること以外は、実施例1と同様にして比較例2に係る積層体を得た。
各実施例及び比較例で得られた積層体を同じ向きに5枚重ねた試料に、100kgfの荷重をかけた状態で、40℃又は60℃に設定された恒温槽内に3日間にわたって収容し、試料をそれぞれ得た。
各実施例及び比較例に係る積層体から得られた試料を、幅15mm、長さ100mmのサイズに切断して試験片とした。この試験片について、紙基材と塗工層間の剥離強度を測定した。測定は、剥離速度300mm/分の条件にて、引張試験機(株式会社島津製作所社製)を用いたT字剥離試験により行った。
上記剥離強度の測定において剥離された塗工層上に紙繊維が付着している量を目視により測定した。評価は以下の基準で行った。
A:塗工層の表面への紙繊維の付着は認められない。
B:塗工層の表面にうっすらと紙繊維が付着している。
C:塗工層の表面に上記Bよりも多くの紙繊維が付着している。
D:塗工層の表面に破れた紙基材が付着している。
なお、60℃に3日間の熱履歴はかなり過酷な条件である。60℃3日後の繊維剥がれの評価が「C」又は「D」であっても、40℃3日後の繊維剥がれの評価が「B」であれば、十分に製品化し得るレベルであると判断することができる。
2枚の積層体を、紙基材が外側になるように重ねて、ヒートシーラーで、0.2MPa、120℃、1秒の条件でヒートシールを行い、剥離速度300mm/分の条件にて、引張試験機(株式会社島津製作所社製)を用いたT字剥離試験により行った。
Claims (7)
- 紙基材と、
ポリオレフィン樹脂を含む塗工層と、
前記塗工層に固定されている複数の粒子と、
を備え、
前記粒子の粒径が前記塗工層の厚さよりも大きい、積層体。 - 以下の工程を経て測定される剥離強度が0.1N/15mm以下である、請求項1に記載の積層体。
<剥離強度の測定>
(a1)当該積層体を同じ向きに5枚重ねた試料に100kgfの荷重をかけた状態で、40℃に設定された恒温槽内に3日間にわたって当該試料を収容する工程。
(b1)前記(a1)工程後の当該試料から二枚の積層体をまとめて剥離する工程。
(c1)前記二枚の積層体について剥離速度300mm/分でT型剥離試験を実施する工程。 - 以下の工程を経て測定されるヒートシール強度が2.1N/15mm以上である、請求項1に記載の積層体。
<ヒートシール強度の測定>
(a2)当該積層体を同じ向きに5枚重ねた試料に100kgfの荷重をかけた状態で、40℃に設定された恒温槽内に3日間にわたって当該試料を収容する工程。
(b2)前記(a2)工程後の当該試料から二枚の積層体をそれぞれ剥離する工程。
(c2)前記二枚の積層体の塗工層同士を圧力0.2MPa、温度120℃、時間1秒の条件でヒートシールする工程。
(d2)前記(c2)工程で得られた試料について剥離速度300mm/分でT型剥離試験を実施する工程。 - 前記粒子の材質が、ポリオレフィン及びその一部変性体、並びにパラフィンからなる群から選ばれる一種である、請求項1~3のいずれか一項に記載の積層体。
- 前記紙基材と前記塗工層との間に蒸着層を更に備える、請求項1~4のいずれか一項に記載の積層体。
- 前記塗工層の質量Aと前記粒子の質量Bの比率A/Bが100/20~100/0.2である、請求項1~5のいずれか一項に記載の積層体。
- 請求項1~6のいずれか一項に記載の積層体のロール。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202280022948.XA CN117098660A (zh) | 2021-04-05 | 2022-03-29 | 层叠体及卷材 |
US18/553,007 US20240150966A1 (en) | 2021-04-05 | 2022-03-29 | Laminate and roll |
EP22784586.4A EP4282652A1 (en) | 2021-04-05 | 2022-03-29 | Laminate and roll |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2021064119A JP2022159736A (ja) | 2021-04-05 | 2021-04-05 | 積層体及びロール |
JP2021-064119 | 2021-04-05 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2022215602A1 true WO2022215602A1 (ja) | 2022-10-13 |
Family
ID=83545454
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2022/015575 WO2022215602A1 (ja) | 2021-04-05 | 2022-03-29 | 積層体及びロール |
Country Status (5)
Country | Link |
---|---|
US (1) | US20240150966A1 (ja) |
EP (1) | EP4282652A1 (ja) |
JP (1) | JP2022159736A (ja) |
CN (1) | CN117098660A (ja) |
WO (1) | WO2022215602A1 (ja) |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS50126041A (ja) * | 1974-03-23 | 1975-10-03 | ||
JPS5724247A (en) * | 1980-07-18 | 1982-02-08 | Toyo Aluminium Kk | Heat seal agent composition and laminate for heat seal |
JPH08226096A (ja) * | 1995-02-20 | 1996-09-03 | Nippon Paper Ind Co Ltd | 耐ブロッキング性及び防滑性に優れた防湿紙 |
JPH11131389A (ja) * | 1997-10-27 | 1999-05-18 | Toppan Printing Co Ltd | コーテッド紙 |
JP2000212894A (ja) * | 1999-01-21 | 2000-08-02 | Keiwa Inc | 防湿紙 |
JP2012201839A (ja) * | 2011-03-28 | 2012-10-22 | Chuo Rika Kogyo Corp | 接着性積層体 |
WO2019107025A1 (ja) * | 2017-12-01 | 2019-06-06 | 王子ホールディングス株式会社 | ヒートシールシート、その製造方法及び滅菌包装体 |
WO2020152753A1 (ja) | 2019-01-21 | 2020-07-30 | 北越コーポレーション株式会社 | 包装用紙 |
WO2021010040A1 (ja) * | 2019-07-12 | 2021-01-21 | 王子ホールディングス株式会社 | 紙積層体 |
-
2021
- 2021-04-05 JP JP2021064119A patent/JP2022159736A/ja active Pending
-
2022
- 2022-03-29 US US18/553,007 patent/US20240150966A1/en active Pending
- 2022-03-29 WO PCT/JP2022/015575 patent/WO2022215602A1/ja active Application Filing
- 2022-03-29 CN CN202280022948.XA patent/CN117098660A/zh active Pending
- 2022-03-29 EP EP22784586.4A patent/EP4282652A1/en active Pending
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS50126041A (ja) * | 1974-03-23 | 1975-10-03 | ||
JPS5724247A (en) * | 1980-07-18 | 1982-02-08 | Toyo Aluminium Kk | Heat seal agent composition and laminate for heat seal |
JPH08226096A (ja) * | 1995-02-20 | 1996-09-03 | Nippon Paper Ind Co Ltd | 耐ブロッキング性及び防滑性に優れた防湿紙 |
JPH11131389A (ja) * | 1997-10-27 | 1999-05-18 | Toppan Printing Co Ltd | コーテッド紙 |
JP2000212894A (ja) * | 1999-01-21 | 2000-08-02 | Keiwa Inc | 防湿紙 |
JP2012201839A (ja) * | 2011-03-28 | 2012-10-22 | Chuo Rika Kogyo Corp | 接着性積層体 |
WO2019107025A1 (ja) * | 2017-12-01 | 2019-06-06 | 王子ホールディングス株式会社 | ヒートシールシート、その製造方法及び滅菌包装体 |
WO2020152753A1 (ja) | 2019-01-21 | 2020-07-30 | 北越コーポレーション株式会社 | 包装用紙 |
WO2021010040A1 (ja) * | 2019-07-12 | 2021-01-21 | 王子ホールディングス株式会社 | 紙積層体 |
Also Published As
Publication number | Publication date |
---|---|
CN117098660A (zh) | 2023-11-21 |
EP4282652A1 (en) | 2023-11-29 |
US20240150966A1 (en) | 2024-05-09 |
JP2022159736A (ja) | 2022-10-18 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP5490574B2 (ja) | 内容物付着防止蓋材およびその製造方法 | |
JP6007548B2 (ja) | 蓋材および該蓋材を用いて密封された密封容器 | |
EA020995B1 (ru) | Склеивающаяся отслаивающаяся пленка | |
JPWO2018003978A1 (ja) | 包装シート及び包装体 | |
JP2016002706A (ja) | 包装材料とそれを蓋材として用いた包装容器 | |
JPWO2019230417A1 (ja) | 積層フィルム及び食品包装袋 | |
WO2005026275A1 (en) | Coated substrates having good very low temperature sealing properties | |
US20240083150A1 (en) | Barrier paper packaging film | |
JP6064453B2 (ja) | 包装材料およびそれを用いた包装容器 | |
JP6485993B2 (ja) | 蓋材とその製造方法 | |
JP2014156257A (ja) | 蓋材とその製造方法 | |
WO2022215602A1 (ja) | 積層体及びロール | |
JP6932566B2 (ja) | 包装材料 | |
JP4383847B2 (ja) | 易開封性複合フィルム | |
JP2016064589A (ja) | 包装材料と包装容器 | |
JP2003237816A (ja) | 蓋 材 | |
JP5784324B2 (ja) | 包装用ヒートシール容器 | |
WO2023042805A1 (ja) | 易開封性包装材及び包装袋 | |
JP7226679B1 (ja) | 易開封性包装材及び包装袋 | |
JP2707967B2 (ja) | ヒートシール耐性に優れたフレキシブル包装用フィルム及びその製造方法 | |
JPH11147295A (ja) | 積層体 | |
JP2017218232A (ja) | 蓋材とその製造方法 | |
WO2024048392A1 (ja) | 包装体及び包装製品 | |
JP2022183061A (ja) | リシール包装材 | |
JP2000117912A (ja) | バリア性フィルムおよびそれを使用した積層材 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 22784586 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2022784586 Country of ref document: EP |
|
ENP | Entry into the national phase |
Ref document number: 2022784586 Country of ref document: EP Effective date: 20230825 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 202280022948.X Country of ref document: CN |
|
WWE | Wipo information: entry into national phase |
Ref document number: 18553007 Country of ref document: US |
|
NENP | Non-entry into the national phase |
Ref country code: DE |