AU2015232363B2 - In-mold label container - Google Patents
In-mold label container Download PDFInfo
- Publication number
- AU2015232363B2 AU2015232363B2 AU2015232363A AU2015232363A AU2015232363B2 AU 2015232363 B2 AU2015232363 B2 AU 2015232363B2 AU 2015232363 A AU2015232363 A AU 2015232363A AU 2015232363 A AU2015232363 A AU 2015232363A AU 2015232363 B2 AU2015232363 B2 AU 2015232363B2
- Authority
- AU
- Australia
- Prior art keywords
- label
- oxygen
- labeled container
- gas
- sheet
- 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.)
- Active
Links
- 229920005989 resin Polymers 0.000 claims abstract description 54
- 239000011347 resin Substances 0.000 claims abstract description 54
- 230000004888 barrier function Effects 0.000 claims abstract description 44
- 239000007789 gas Substances 0.000 claims abstract description 41
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 27
- 238000002347 injection Methods 0.000 claims abstract description 27
- 239000007924 injection Substances 0.000 claims abstract description 27
- 239000001301 oxygen Substances 0.000 claims abstract description 27
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 27
- 239000006096 absorbing agent Substances 0.000 claims description 16
- 229920000219 Ethylene vinyl alcohol Polymers 0.000 claims description 13
- 239000004715 ethylene vinyl alcohol Substances 0.000 claims description 11
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 150000002894 organic compounds Chemical group 0.000 claims description 4
- 239000000843 powder Substances 0.000 claims description 3
- UFRKOOWSQGXVKV-UHFFFAOYSA-N ethene;ethenol Chemical group C=C.OC=C UFRKOOWSQGXVKV-UHFFFAOYSA-N 0.000 claims 1
- 238000010521 absorption reaction Methods 0.000 abstract 1
- 230000001747 exhibiting effect Effects 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 68
- -1 polypropylene Polymers 0.000 description 18
- 239000004743 Polypropylene Substances 0.000 description 12
- 229920001155 polypropylene Polymers 0.000 description 12
- 239000005026 oriented polypropylene Substances 0.000 description 10
- 239000000463 material Substances 0.000 description 8
- 229920003002 synthetic resin Polymers 0.000 description 7
- 239000000057 synthetic resin Substances 0.000 description 7
- 239000012790 adhesive layer Substances 0.000 description 6
- 229910052782 aluminium Inorganic materials 0.000 description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 6
- 239000002985 plastic film Substances 0.000 description 6
- 229920006255 plastic film Polymers 0.000 description 6
- 239000000758 substrate Substances 0.000 description 5
- 150000001868 cobalt Chemical class 0.000 description 4
- 230000006866 deterioration Effects 0.000 description 4
- 239000012793 heat-sealing layer Substances 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 239000005062 Polybutadiene Substances 0.000 description 3
- 229920001328 Polyvinylidene chloride Polymers 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 239000011888 foil Substances 0.000 description 3
- 150000002696 manganese Chemical class 0.000 description 3
- 229920002857 polybutadiene Polymers 0.000 description 3
- 239000005033 polyvinylidene chloride Substances 0.000 description 3
- 229910052723 transition metal Inorganic materials 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 2
- 239000011203 carbon fibre reinforced carbon Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 150000001879 copper Chemical class 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009820 dry lamination Methods 0.000 description 2
- 239000005038 ethylene vinyl acetate Substances 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- 150000002505 iron Chemical class 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 150000002815 nickel Chemical class 0.000 description 2
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 239000004793 Polystyrene Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000004840 adhesive resin Substances 0.000 description 1
- 229920006223 adhesive resin Polymers 0.000 description 1
- 229920001400 block copolymer Polymers 0.000 description 1
- 150000001721 carbon Chemical group 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 150000001844 chromium Chemical class 0.000 description 1
- 150000001925 cycloalkenes Chemical class 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000007765 extrusion coating Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 239000012299 nitrogen atmosphere Substances 0.000 description 1
- 229920006284 nylon film Polymers 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 239000000088 plastic resin Substances 0.000 description 1
- 229920001084 poly(chloroprene) Polymers 0.000 description 1
- 229920000636 poly(norbornene) polymer Polymers 0.000 description 1
- 229920002239 polyacrylonitrile Polymers 0.000 description 1
- 229920006122 polyamide resin Polymers 0.000 description 1
- 229920006267 polyester film Polymers 0.000 description 1
- 229920001195 polyisoprene Polymers 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 229920000346 polystyrene-polyisoprene block-polystyrene Polymers 0.000 description 1
- 150000003283 rhodium Chemical class 0.000 description 1
- 238000007152 ring opening metathesis polymerisation reaction Methods 0.000 description 1
- 150000003303 ruthenium Chemical class 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- 150000003608 titanium Chemical class 0.000 description 1
- 150000003681 vanadium Chemical class 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
- B65D81/24—Adaptations for preventing deterioration or decay of contents; Applications to the container or packaging material of food preservatives, fungicides, pesticides or animal repellants
- B65D81/26—Adaptations for preventing deterioration or decay of contents; Applications to the container or packaging material of food preservatives, fungicides, pesticides or animal repellants with provision for draining away, or absorbing, or removing by ventilation, fluids, e.g. exuded by contents; Applications of corrosion inhibitors or desiccators
- B65D81/266—Adaptations for preventing deterioration or decay of contents; Applications to the container or packaging material of food preservatives, fungicides, pesticides or animal repellants with provision for draining away, or absorbing, or removing by ventilation, fluids, e.g. exuded by contents; Applications of corrosion inhibitors or desiccators for absorbing gases, e.g. oxygen absorbers or desiccants
- B65D81/267—Adaptations for preventing deterioration or decay of contents; Applications to the container or packaging material of food preservatives, fungicides, pesticides or animal repellants with provision for draining away, or absorbing, or removing by ventilation, fluids, e.g. exuded by contents; Applications of corrosion inhibitors or desiccators for absorbing gases, e.g. oxygen absorbers or desiccants the absorber being in sheet form
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D1/00—Containers having bodies formed in one piece, e.g. by casting metallic material, by moulding plastics, by blowing vitreous material, by throwing ceramic material, by moulding pulped fibrous material, by deep-drawing operations performed on sheet material
- B65D1/34—Trays or like shallow containers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D1/00—Containers having bodies formed in one piece, e.g. by casting metallic material, by moulding plastics, by blowing vitreous material, by throwing ceramic material, by moulding pulped fibrous material, by deep-drawing operations performed on sheet material
- B65D1/22—Boxes or like containers with side walls of substantial depth for enclosing contents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D1/00—Containers having bodies formed in one piece, e.g. by casting metallic material, by moulding plastics, by blowing vitreous material, by throwing ceramic material, by moulding pulped fibrous material, by deep-drawing operations performed on sheet material
- B65D1/40—Details of walls
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D77/00—Packages formed by enclosing articles or materials in preformed containers, e.g. boxes, cartons, sacks or bags
- B65D77/10—Container closures formed after filling
- B65D77/20—Container closures formed after filling by applying separate lids or covers, i.e. flexible membrane or foil-like covers
- B65D77/2024—Container closures formed after filling by applying separate lids or covers, i.e. flexible membrane or foil-like covers the cover being welded or adhered to the container
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Ceramic Engineering (AREA)
- Food Science & Technology (AREA)
- Containers Having Bodies Formed In One Piece (AREA)
- Packages (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Details Of Rigid Or Semi-Rigid Containers (AREA)
Abstract
The present invention addresses the problem of providing an in-mold label container having excellent gas barrier and oxygen absorption properties. The in-mold label container (10) is provided with a barrel section (11) and a bottom section (1). The in-mold label container (10) has a sheet-formed body (3), a label (4), and an injection resin (8) interposed between the sheet-formed body (3) and the label (4). The sheet-formed body (3) has the shape of the container while exhibiting gas barrier properties, and is positioned on the inner side. The label (4) exhibits gas barrier properties and is positioned on the outer side. A laminate (23) of the sheet formed body (3) has a gas barrier/oxygen-absorbing resin layer (23b). This makes it possible to obtain reliable gas barrier properties, even if a gap is formed at the end edge of the label (4), and to absorb oxygen that has infiltrated into the interior.
Description
IN-MOLD LABELED CONTAINER
TECHNICAL FIELD [0001] The present invention relates to an in-mold labeled container which can secure gas barrier properties.
BACKGROUND ART [0002] An in-mold labeled container is produced by setting a label having a heat-sealing layer in a mold in advance of injection molding, and fusion-bonding the heat-sealing layer of the label to the surface of an injection resin by the heat of the resin upon its injection molding.
[0003] A known in-mold labeled container using a label having gas barrier properties has a body portion and a bottom portion. In the in-mold labeled container, a rigid label having high gas barrier properties is affixed as an insert material to the body and bottom portions. The use of such a rigid label can provide the in-mold labeled container with gas barrier properties and an increased overall mechanical strength. The label may be a laminate consisting of a body layer of rigid paper or synthetic paper and a barrier layer of a synthetic resin material having gas barrier properties.
[0004] However, in the conventional in-mold labeled container, a gap can be formed between both ends of the label affixed especially to the body portion. The gap may cause a decrease in the gas barrier properties of the container.
[0005] A conceivable method for solve this problem is to provide a container-shaped molded sheet having gas barrier properties in an in-mold labeled container. If the molded sheet is one having oxygen-absorbing properties, the molded sheet can absorb oxygen that has entered the in-mold labeled container, thereby favorably preventing deterioration of the contents of the container.
Prior Art Document
Patent Document [0006] Patent document 1: Japanese Patent Laid-Open Publication No. H8-132477
2015232363 28 Jun 2019
SUMMARY OF THE INVENTION
Problems to be Solved by the Invention [0007] The present invention has been made in view of the above situation. It is therefore an object of the present invention to provide 5 an in-mold labeled container which can secure gas barrier properties even when a gap is formed between both ends of a label affixed to the body portion of the container and which can absorb oxygen that has entered the container.
Means for Solving the Problems [0008] The present invention provides an in-mold labeled container having a body portion and a bottom portion, comprising: a containershaped molded sheet having gas barrier properties and comprising a body-portion sheet and a bottom-portion sheet having an octagon 15 shape in a plan view; a label having gas barrier properties; and an injection resin interposed between the molded sheet and the label, wherein the molded sheet is located inside the injection resin, and the label is located outside the injection resin, and wherein the molded sheet contains a gas-barrier and oxygen-absorbing resin layer having 20 gas barrier properties and oxygen-absorbing properties, wherein the label comprises a bottom-portion label and a body-portion label formed integrally with the bottom-portion label, having a plurality of portions, and wherein the bottom-portion label has an octagon shape in a plan view and each portion of the body-portion label extends outwardly in a 25 radial manner from a side of the bottom-portion label.
[0009] In a preferred embodiment of the present invention, the gasbarrier and oxygen-absorbing resin layer comprises a gas-barrier resin layer containing an oxygen absorber.
2a
2015232363 28 Jun 2019 [0010] In a preferred embodiment of the present invention, the gasbarrier and oxygen-absorbing resin layer comprises a gas-barrier resin layer, and an oxygen-absorbing resin layer containing an oxygen absorber.
[0011] In a preferred embodiment of the present invention, the gasbarrier resin layer is an EVOH layer.
[0012] In a preferred embodiment of the present invention, the oxygen absorber is an organic compound having oxygen-absorbing properties.
[0013] In a preferred embodiment of the present invention, the oxygen 10 absorber is powder of a reducible metal.
[0013a] Comprises/comprising when used in this specification is taken to specify the presence of stated features, integers, steps or components but does not preclude the presence or addition of one or more other features, integers, steps, components or groups thereof.
[continued on page 3]
Advantageous Effects of the Invention [0014] The in-mold labeled container according to the present invention can have enhanced gas barrier properties even when a gap is formed in the label of the body portion and, in addition, can effectively absorb oxygen that has entered the container, thereby preventing deterioration of the contents of the container.
BRIEF DESCRIPTION OF THE DRAWINGS [0015] FIG. 1 is a cross-sectional side view of an in-mold labeled container according to an embodiment of the present invention;
FIG. 2 is a plan view of the in-mold labeled container;
FIG. 3 is a perspective view of the in-mold labeled container;
FIG. 4 is a perspective view of a molded sheet;
FIG. 5 is a plan view of the molded sheet;
FIG. 6 is a cross-sectional side view illustrating the laminate structure of the molded sheet;
FIG. 7A is a development view of a label comprising a body-portion label and a bottom-portion label, and FIG. 7B is an assembly view of the body-portion label and the bottom-portion label;
FIG. 8 is a cross-sectional side view illustrating the laminate structure of the label;
FIGS. 9A, 9B and 9C are diagrams illustrating a method for producing the in-mold labeled container; and
FIG. 10 is a cross-sectional side view illustrating a variation of the laminate structure of the molded sheet.
DESCRIPTION OF THE PREFERRED EMBODIMENTS [0016] <Embodiment>
An embodiment of the present invention will now be described with reference to the drawings.
[0017] FIGS. 1 through 9 are diagrams illustrating the embodiment of the present invention.
[0018] As shown in FIGS. 1 through 3, an in-mold labeled container 10 includes a generally-octagonal cylindrical body portion 11 having a flange portion 14, and a bottom portion 12 coupled to the lower end of the body portion 11.
[0019] Further, the in-mold labeled container 10 comprises a molded sheet 3 having gas barrier properties, a label 4 having gas barrier properties, and an injection resin 8 interposed between the molded sheet 3 and the label 4.
[0020] The molded sheet 3 is located inside the injection resin 8,
i.e. on the inner-surface side of the in-mold labeled container 10, has the shape of a container comprising a body-portion sheet 3a corresponding to the body portion 11, a bottom-portion sheet 3b corresponding to the bottom portion 12, and a flange-portion sheet 3c corresponding to the flange portion 14, and has gas barrier properties as a whole (see FIGS. 4 through 6).
[0021] The label 4 is located outside the injection resin 8, i.e. on the outer-surface side of the in-mold labeled container 10, comprises a body-portion label 5 corresponding to the body portion 11, and a bottom-portion label 7 corresponding to the bottom portion 12, and has gas barrier properties as a whole. A gate hole 7a for injection of the injection resin 8 is formed at the center of the bottom-portion label 7 (see FIGS. 7 and 8). The gas barrier properties herein at least include oxygen barrier properties, and may additionally include steam barrier properties.
[0022] As shown in FIGS. 7A and 7B, the body-portion label 5 and the bottom-portion label 7, constituting the label 4, are formed integrally. The body-portion label 5 consists of a plurality of portions 5a, 5b, 5c, 5d, 5e, 5f, 5g, 5h extending outward from the perimeter of the bottom-portion label 7.
[0023] Adjacent ones of the portions 5a, 5b, 5c, 5d, 5e, 5f, 5g, 5h of the body-portion label 5 overlap each other and form overlap portions 5A.
[0024] Since the body-portion label 5 and the bottom-portion label 7 both have gas barrier properties as described above, the label 4 comprising the body-portion label 5 and the bottom-portion label 7 has high gas barrier properties.
[0025] In this embodiment the portions 5a, 5b, 5c, 5d, 5e, 5f, 5g, 5h of the body-portion label 5 overlap each other and form the overlap portions 5A. Therefore, no gap is formed between the portions 5a, 5b, 5c, 5d, 5e, 5f, 5g, 5h of the body-portion label 5. This can enhance the gas barrier properties of the in-mold labeled container 10 as a whole.
[0026] As shown in FIGS. 1 through 3, the body portion 11 of the in-mold labeled container 10 has the flange portion 14. The flange portion 14 comprises a flange-portion sheet 3c provided at the top of the body-portion sheet 3a of the molded sheet 3, and the injection resin 8 that has been injected onto the flange-portion sheet 3c.
[0027] Liquid contents 35 are filled into the in-mold labeled container 10 having the above construction. Subsequently, a lid material 30 composed of an aluminum layer 30a and a heat-sealing layer 30b is bonded to the flange portion 14 of the in-mold labeled container 10, thereby hermetically sealing the in-mold labeled container 10.
[0028] The molded sheet 3 will now be described with reference to FIGS. 4 through 6.
[0029] As described above, the molded sheet 3 is container-shaped, and comprises the body-portion sheet 3a having the flange-portion sheet 3c, and the bottom-portion sheet 3b. In this embodiment the molded sheet 3 is formed of a sheet-like laminate 23 having the layer construction shown in FIG. 6.
[0030] In particular, as shown in FIG. 6, the laminate 23 constituting the molded sheet 3 consists of an outermost polypropylene (PP) layer 23a as a synthetic resin layer, an intermediate gas-barrier/oxygen-absorbing resin layer 23b having gas barrier properties and oxygen-absorbing properties, comprising an ethylene-vinyl alcohol copolymer (EVOH), and an innermost polypropylene (PP) layer 23c as an adhesive layer.
[0031] The container-shaped molded sheet 3 can be produced by subjecting the thus-constructed sheet-like laminate 23 to vacuum molding.
[0032] The molded sheet 3 will now be described in more detail. The gas-barrier/oxygen-absorbing resin layer 23b of the laminate 23 constituting the molded sheet 3 is comprised of a single EVOH layer (gas-barrier resin layer) containing an oxygen absorber, and has gas barrier properties and oxygen-absorbing properties.
[0033] The oxygen absorber contained in the EVOH layer is not particularly limited as far as it can absorb oxygen. The oxygen absorber may be, for example, a compound containing a carbon-carbon double bond, a polymer containing a secondary or tertiary carbon atom, or an organic compound such as a polyamide resin; or powder of a reducible metal such as reducible iron or reducible zinc.
[0034] Examples of the compound having a carbon-carbon double bond include polybutadiene, polyisoprene, polychloroprene, poly(2-ethylbutadiene), poly(2-butylbutadiene) and any other polydiene obtained by polymerization of monomer molecules mainly at the 1,4-positions (such as 1,4-polybutadiene); ring-opening metathesis polymers of any arbitrary cycloolefins (such as polyoctenylene, polypentenylene, and polynorbornene); and block copolymers each having a polydiene block, such as styrene-isoprene-styrene triblock copolymer. Of these compounds, polybutadiene and polyoctenylene are preferred.
[0035] Especially when the oxygen absorber is an organic compound, one or more transition metal salts may be incorporated into the oxygen-absorbing resin layer 23b. This can improve the oxygen-absorbing performance of the layer. [0036] Examples of the transition metal salt include an iron salt, a nickel salt, a copper salt, a manganese salt, a cobalt salt, a rhodium salt, a titanium salt, a chromium salt, a vanadium salt, and a ruthenium salt. However, the transition metal salt is not limited to these salts. Of these salts, an iron salt, a nickel salt, a copper salt, a manganese salt and a cobalt salt are preferred, a manganese salt and a cobalt salt are more preferred, and a cobalt salt is most preferred.
[0037] The label 4 comprising the body-portion label 5 and the bottom-portion label 7 will now be described.
[0038] The label 4 comprising the body-portion label 5 and the bottom-portion label 7 is formed of a laminate 24 having the layer construction shown in FIG. 8.
[0039] In particular, as shown in FIG. 8, the label 4 comprising the body-portion label 5 and the bottom-portion label 7 is composed of (i) an adhesive layer 24a bonded to the injection resin, (ii) a synthetic resin layer 24d, (iii) a gas barrier layer 24c and (iv) a print substrate layer 24b (the layers (i) and (ii) may be combined). The laminate 24 can be produced by independently forming the films of the layers 24a, 24b, 24c, 24d, and bonding them together with an adhesive (dry lamination), or by melt-extruding part or all of the layers (EC, co-extrusion). The print substrate layer may be omitted depending on the intended use.
[0040] While the adhesive layer 24a is not particularly limited as far as it can adhere to the injection resin, it is usually preferred to use a plastic resin of the same material as the injection resin, an adhesive resin such as EVA (ethylene-vinyl acetate copolymer)-containing polyethylene, or a plastic film co-extruded or coated with such a resin.
[0041] The film of the print substrate layer 24b is not particularly limited as far as it is printable. For example, a polyester film, a polypropylene film, a nylon film, etc. may be used arbitrarily.
[0042] Examples of the gas barrier layer 24c include (a) aluminum foil (7 to 25 pm), (b) a plastic film or the like to which a metal or a metal oxide has been applied e.g. by vapor deposition, for example, a plastic film having a vapor-deposited silicon oxide layer, a plastic film having a vapor-deposited aluminum oxide layer or a plastic film having a vapor-deposited aluminum layer, and (c) other materials including a polyacrylonitrile film, an EVOH (ethylene-vinyl alcohol copolymer) film, a PVDC (polyvinylidene chloride) film, a biaxially-oriented PVDC-coated plastic film, etc. Such a material may be appropriately selected depending on the intended performance.
[0043] Polypropylene (PP) can be used for the synthetic resin layer 24d.
[0044] The laminate 24 of the above layers can be formed by a common method such as dry lamination, extrusion lamination, or coating, e.g. extrusion coating.
[0045] For example, the following specific labels can be used as the label 4 comprising the body-portion label 5 and the bottom-portion label 7.
[0046] (1) Heat-sealing oriented polypropylene layer (HSOPP) 30 μ/aluminum foil 7 μ/oriented polypropylene layer (OPP) 30 μ (2) Heat-sealing oriented polypropylene layer (HSOPP) 30 p/VM-PET12/oriented polypropylene layer (OPP) 30 μ (3) Heat sealant coating/oriented polypropylene layer (OPP) 30 μ/aluminum foil 7 μ/oriented polypropylene layer (OPP) 30 μ
An injection-moldable thermoplastic resin such as polypropylene, polyethylene or polystyrene can be used as the injection resin 8 in the in-mold labeled container 10 of the present invention.
[0047] A method for producing the in-mold labeled container 10 will now be described with reference to FIGS. 9A, 9B and 9C.
[0048] First, the sheet-like laminate 23 is subjected to vacuum molding to produce the container-shaped molded sheet 3. Separately, the label 4 comprising the body-portion label 5 and the bottom-portion label 7 is prepared.
[0049] Next, as shown in FIG. 9A, a mold 20 comprising a cavity 22 and a core 21 is prepared, and the molded sheet 3 is stuck by suction to the core 21 of the mold 20.
[0050] Next, as shown in FIG. 9B, the label 4 is stuck by suction to the cavity 22 of the mold 20.
[0051] Next, the core 21 is moved close to the cavity 22 so as to insert the core 21 into the cavity 22, and then the cavity 22 and the core 21 are clamped.
[0052] Thereafter, an injection resin 8 is injected into the space between the cavity 22 and the core 21 from an injection port 22a provided in the cavity 22 (FIG. 9C). The injection resin 8, injected from the injection port 22a, intrudes into the space between the cavity 22 and the core 21 through the gate hole 7a provided in the label 4, and the molded sheet 3 and the label 4 are bonded together by the injection resin 8. The in-mold labeled container 10 is thus produced.
[0053] The thus-obtained in-mold labeled container 10 is taken out of the mold 20.
[0054] Next, liquid contents 35 are filled into the in-mold labeled container 10 in a nitrogen atmosphere. Thereafter, the lid material 30 is bonded to the flange portion 14 of the in-mold labeled container 10, thereby hermetically sealing the in-mold labeled container 10 (see FIG. 1).
[0055] Upon the filling with the contents 35, air containing oxygen can sometimes enter the in-mold labeled container 10. Further, in some cases, air containing oxygen is already present in the contents 35 when they are filled into the in-mold labeled container 10.
[0056] According to this embodiment, the molded sheet 3 of the in-mold labeled container 10 is located on the inner-surface side of the in-mold labeled container 10 and, in addition, contains the gas-barrier/oxygen-absorbing resin layer 23b. The gas-barrier/oxygen-absorbing resin layer 23b has gas barrier properties and oxygen-absorbing properties, and therefore can effectively absorb oxygen present in the in-mold labeled container 10. This makes it possible to effectively prevent deterioration of the contents 35 of the in-mold labeled container 10.
[0057] As described hereinabove, the in-mold labeled container 10 of this embodiment includes the container-shaped molded sheet 3 having gas barrier properties, the label 4 having gas barrier properties, and the injection resin interposed between the molded sheet 3 and the label 4. The use of the molded sheet 3 can maintain the gas barrier properties of the in-mold labeled container 10 as a whole even when a gap is formed in the label 4.
[0058] Furthermore, the molded sheet 3 of the in-mold labeled container 10 is located on the inner-surface side of the in-mold labeled container 10 and, in addition, contains the gas-barrier/oxygen-absorbing resin layer 23b having gas barrier properties and oxygen-absorbing properties. The gas-barrier/oxygen-absorbing resin layer 23b can effectively absorb oxygen present in the in-mold labeled container 10, making it possible to effectively prevent deterioration of the contents 35 of the in-mold labeled container 10.
[0059] Further, the label 4 is disposed outside the injection resin 8 and, in addition, contains the print substrate layer 24b. This can enhance the ornamental design of the in-mold labeled container 10.
[0060] <Variation>
A variation of the laminate 23 constituting the molded sheet 3 will now be described with reference to FIG. 10. As shown in FIG. 10, the laminate 23 constituting the molded sheet 3 consists of an outermost polypropylene (PP) layer 23a as a synthetic resin layer, an intermediate gas-barrier/oxygen-absorbing resin layer 23b having gas barrier properties and oxygen-absorbing properties, and an innermost polypropylene (PP) layer 23c as an adhesive layer.
[0061] The gas-barrier/oxygen-absorbing resin layer 23b has a three-layer structure consisting of an EVOH layer (gas-barrier resin layer) 23bl containing no oxygen absorber, an EVOH layer (oxygen-absorbing resin layer) 23b2 containing an oxygen absorber, and an EVOH layer (gas-barrier resin layer) 23b3 containing no oxygen absorber. While the EVOH layers 23bl and 23b3 solely have gas barrier properties, the EVOH layer 23b2 containing an oxygen absorber has both gas barrier properties and oxygen-absorbing properties.
DESCRIPTION OF THE REFERENCE NUMERALS [0062] 3 molded sheet
3a body-portion sheet
3b bottom-portion sheet
3c flange-portion sheet label body-portion label
5A overlap portion
5a-5h portions bottom-portion label injection resin in-mold labeled container body portion bottom portion flange portion mold core cavity
22a injection port laminate
23a synthetic resin layer
23b gas-barrier/oxygen-absorbing resin layer
23c adhesive layer laminate
24a adhesive layer
24b print substrate layer
24c gas barrier layer
24d synthetic resin layer lid material
30a aluminum layer
30b heat-sealing layer contents
Claims (6)
- CLAIMS:1. An in-mold labeled container having a body portion and a bottom portion, comprising:a container-shaped molded sheet having gas barrier properties and comprising a body-portion sheet and a bottom-portion sheet having an octagon shape in a plan view;a label having gas barrier properties; and an injection resin interposed between the molded sheet and the label, wherein the molded sheet is located inside the injection resin, and the label is located outside the injection resin, and wherein the molded sheet contains a gas-barrier and oxygen-absorbing resin layer having gas barrier properties and oxygen-absorbing properties, wherein the label comprises a bottom-portion label and a body-portion label formed integrally with the bottom-portion label, having a plurality of portions, and wherein the bottom-portion label has an octagon shape in a plan view and each portion of the body-portion label extends outwardly in a radial manner from a side of the bottomportion label.
- 2. The in-mold labeled container according to claim 1, wherein the gas-barrier and oxygen-absorbing resin layer comprises a gas-barrier resin layer containing an oxygen absorber.
- 3. The in-mold labeled container according to claim 1 or 2, wherein the gas-barrier and oxygen-absorbing resin layer comprises a gasbarrier resin layer, and an oxygen-absorbing resin layer containing an oxygen absorber.
- 4. The in-mold labeled container according to claim 3, wherein the gas-barrier resin layer is an EVOH layer.2015232363 28 Jun 2019
- 5. The in-mold labeled container according to claim 3 or 4, wherein the oxygen absorber is an organic compound having oxygen-absorbing properties.
- 6. The in-mold labeled container according to claim 3 or 4, wherein the oxygen absorber is powder of a reducible metal.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2014057068A JP6358495B2 (en) | 2014-03-19 | 2014-03-19 | In-mold label container |
| JP2014-057068 | 2014-03-19 | ||
| PCT/JP2015/058284 WO2015141789A1 (en) | 2014-03-19 | 2015-03-19 | In-mold label container |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| AU2015232363A1 AU2015232363A1 (en) | 2016-09-22 |
| AU2015232363B2 true AU2015232363B2 (en) | 2019-08-15 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU2015232363A Active AU2015232363B2 (en) | 2014-03-19 | 2015-03-19 | In-mold label container |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JP6358495B2 (en) |
| KR (1) | KR102179800B1 (en) |
| CN (1) | CN106132841B (en) |
| AU (1) | AU2015232363B2 (en) |
| WO (1) | WO2015141789A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6541031B2 (en) * | 2015-09-28 | 2019-07-10 | 大日本印刷株式会社 | In-mold label container and method of manufacturing the same |
| JP6928899B2 (en) * | 2017-09-29 | 2021-09-01 | 大日本印刷株式会社 | Manufacturing method of in-mold label container and in-mold label container |
| KR102019406B1 (en) * | 2019-03-05 | 2019-09-06 | 주식회사 유한팩 | Multi layer film label for inmold injection |
| CN111862781B (en) * | 2020-07-28 | 2021-06-01 | 台州卡乐包装材料有限公司 | Three-dimensional coating in-mold label and in-mold labeling method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002249174A (en) * | 2001-02-20 | 2002-09-03 | Mitsubishi Gas Chem Co Inc | Deoxidized molded container and deoxidized closed container using it |
| JP2013541432A (en) * | 2010-07-09 | 2013-11-14 | ネステク ソシエテ アノニム | Labeled containers and process for manufacturing labeled containers |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3828598B2 (en) | 1994-09-14 | 2006-10-04 | 大日本印刷株式会社 | In-mold label container and manufacturing method thereof |
| JP3856056B2 (en) * | 1997-07-16 | 2006-12-13 | 三菱瓦斯化学株式会社 | Easy-to-open deoxidized multilayer body |
| JP4844775B2 (en) * | 2000-03-31 | 2011-12-28 | 大日本印刷株式会社 | Paper container |
| JP2004155483A (en) * | 2002-11-08 | 2004-06-03 | Toppan Printing Co Ltd | Plastic container with barrier property |
| JP2004244034A (en) * | 2003-02-12 | 2004-09-02 | Dainippon Printing Co Ltd | Packaging container and packaged body |
| JP2005283978A (en) * | 2004-03-30 | 2005-10-13 | Toppan Printing Co Ltd | In-mold label |
| JP5237654B2 (en) * | 2007-07-06 | 2013-07-17 | 出光ユニテック株式会社 | Multi-layer sheet, container and package |
-
2014
- 2014-03-19 JP JP2014057068A patent/JP6358495B2/en active Active
-
2015
- 2015-03-19 KR KR1020167028434A patent/KR102179800B1/en active IP Right Grant
- 2015-03-19 CN CN201580014689.6A patent/CN106132841B/en active Active
- 2015-03-19 WO PCT/JP2015/058284 patent/WO2015141789A1/en active Application Filing
- 2015-03-19 AU AU2015232363A patent/AU2015232363B2/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002249174A (en) * | 2001-02-20 | 2002-09-03 | Mitsubishi Gas Chem Co Inc | Deoxidized molded container and deoxidized closed container using it |
| JP2013541432A (en) * | 2010-07-09 | 2013-11-14 | ネステク ソシエテ アノニム | Labeled containers and process for manufacturing labeled containers |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106132841B (en) | 2018-12-25 |
| KR102179800B1 (en) | 2020-11-17 |
| JP6358495B2 (en) | 2018-07-18 |
| JP2015178378A (en) | 2015-10-08 |
| KR20160135268A (en) | 2016-11-25 |
| CN106132841A (en) | 2016-11-16 |
| WO2015141789A1 (en) | 2015-09-24 |
| AU2015232363A1 (en) | 2016-09-22 |
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