WO2005120963A1 - ラベル付き樹脂容器 - Google Patents
ラベル付き樹脂容器 Download PDFInfo
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- WO2005120963A1 WO2005120963A1 PCT/JP2004/008558 JP2004008558W WO2005120963A1 WO 2005120963 A1 WO2005120963 A1 WO 2005120963A1 JP 2004008558 W JP2004008558 W JP 2004008558W WO 2005120963 A1 WO2005120963 A1 WO 2005120963A1
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- 229920005604 random copolymer Polymers 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 229940047670 sodium acrylate Drugs 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000000638 solvent extraction Methods 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 239000008117 stearic acid Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920001576 syndiotactic polymer Polymers 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
- 229920006230 thermoplastic polyester resin Polymers 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- 239000011135 tin Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 229920001862 ultra low molecular weight polyethylene Polymers 0.000 description 1
- KAKZBPTYRLMSJV-UHFFFAOYSA-N vinyl-ethylene Natural products C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011787 zinc oxide 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
- 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
- B65D1/02—Bottles or similar containers with necks or like restricted apertures, designed for pouring contents
- B65D1/0207—Bottles or similar containers with necks or like restricted apertures, designed for pouring contents characterised by material, e.g. composition, physical features
-
- 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
- B65D23/00—Details of bottles or jars not otherwise provided for
- B65D23/08—Coverings or external coatings
- B65D23/0842—Sheets or tubes applied around the bottle with or without subsequent folding operations
- B65D23/0864—Applied in mould
-
- 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
- B65D2203/00—Decoration means, markings, information elements, contents indicators
- B65D2203/02—Labels
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
- Y10T428/1303—Paper containing [e.g., paperboard, cardboard, fiberboard, etc.]
- Y10T428/1307—Bag or tubular film [e.g., pouch, flexible food casing, envelope, etc.]
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
- Y10T428/1352—Polymer or resin containing [i.e., natural or synthetic]
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
- Y10T428/1352—Polymer or resin containing [i.e., natural or synthetic]
- Y10T428/1355—Elemental metal containing [e.g., substrate, foil, film, coating, etc.]
- Y10T428/1359—Three or more layers [continuous layer]
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
- Y10T428/1352—Polymer or resin containing [i.e., natural or synthetic]
- Y10T428/1397—Single layer [continuous layer]
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/14—Layer or component removable to expose adhesive
- Y10T428/1452—Polymer derived only from ethylenically unsaturated monomer
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/14—Layer or component removable to expose adhesive
- Y10T428/149—Sectional layer removable
- Y10T428/1495—Adhesive is on removable layer
Definitions
- the present invention relates to a labeled resin container having improved resistance to drop impact destruction, and more particularly to an in-mold molded resin container with a label.
- containers with in-mold labels have a lower impact strength at the periphery of the label than other parts, so containers can be placed on high places such as product shelves. When it fell from the ground and came into contact with the ground, the impact of the drop caused the container to rupture starting from the periphery of the label, causing the contents to spill.
- the MFR and crystallinity of the resin used in the container for example, JP-A-2000-72931, JP-A-2000-219227.
- the drop impact cannot be sufficiently improved.
- the weight of the entire container including the contents was large, so that these proposed methods could not sufficiently prevent the container from rupture starting from the periphery of the label.
- an object of the present invention is to provide a labeled resin container capable of reducing the weight of the container and maintaining the productivity, and also improving the resistance to drop impact destruction. Disclosure of the invention
- the present inventors have conducted intensive studies in order to achieve the above object, and as a result, the ratio of the mechanical strength of the label-attached portion to the mechanical strength of the unlabeled portion is within a specific range.
- the present inventors have found that a resin container exhibits an expected effect, and have reached the present invention.
- the present invention provides a labeled resin container to which an in-mold molding label having the following configuration is attached.
- thermoplastic resin container on which a label for in-mold molding is adhered wherein the product of the Gurley stiffness (m ⁇ kgf) and the 3% elongation load (kgf) at the label edge portion of the label attachment portion is And a labeled resin container having a ratio (AZB) of the product B of the Gurley stiffness and the 3% elongation load in the peripheral part of the label in the unlabeled area, which is 0.6 or less.
- thermoplastic resin container contains a polyolefin-based resin.
- thermoplastic resin container described in any of (1) to (5), wherein the thermoplastic resin container has a volume of 1.5 liters or more.
- the label for in-mold molding has a heat-sealing resin layer (B) provided on one surface of a base material layer (A) containing a thermoplastic resin, and the heat-sealing resin layer (B) is The labeled resin container according to any one of (1) to (6), which is adhered to and integrated with a thermoplastic resin container via a resin.
- Substrate layer containing thermoplastic resin Force A stretched resin film containing 30 to 100% by weight of thermoplastic resin, inorganic fine powder and 70 to 0% of organic or organic filler A resin container with a label according to (7).
- Label for in-mold molding contains polyolefin resin (1)-(1
- FIG. 1 is a side view showing an example of the labeled resin container of the present invention.
- FIG. 2 is a partial cross-sectional view of an example of the labeled resin container of the present invention.
- FIG. 3 is a side view showing an example of the labeled resin container of the present invention, and is a view for explaining a radius of curvature R at a corner of the label.
- 1 is a container
- 2 is an in-mold label
- 3 is a label edge portion
- 4 is a label peripheral portion
- S is a notch cross-sectional area.
- a numerical range represented by using “to” means a range including numerical values described before and after “to” as a lower limit and an upper limit.
- the resin container with a label of the present invention comprises: a product A of a galley stiffness (m * kgf) and a 3% elongation load (kgf) at a label edge portion of a label affixed portion;
- the force S is 0.6 or less, preferably 0.55 or less, more preferably 0.05 to 0.50. If it exceeds 0.6, the drop impact resistance is poor.
- ⁇ label's edge '' refers to a rectangular portion defined as including as one side an imaginary line parallel to the edge of the label located 5 mm inside the label from the edge of the label. Specifically, it refers to a rectangular section of 5 cm along the imaginary line parallel to the edge and 3 cm on the label cut in a direction perpendicular to the imaginary line (see label edge 3 in FIGS. 1 and 2).
- the resin container to which the rectangular label is adhered is cut out as a test piece, and measured by the method described in the examples described later to determine the resin stiffness at the label edge (m ⁇ kg ⁇ ⁇ ⁇ ). And a 3% elongation load (kgf).
- the “peripheral part of the label” as used in this specification is a rectangle defined to include, as one side, an imaginary line parallel to the edge of the label located 5 mm from the edge of the label to the unlabeled part. 5 cm along the imaginary line parallel to the edge, specifically the rectangular part with the label 'unattached part' cut off 3 cm in the direction perpendicular to it (Figs. 1 and 2) Around the label 4).
- the rectangular resin container was cut out as a test piece, and measured by the method described in Examples described later to determine the Gurley stiffness (m ⁇ kgf) and the 3% extension load (kg ⁇ ) of the resin container around the label. Is obtained.
- the cross section of the resin container with an in-mold label has a structure as shown in FIG. That is, a notch is generated between the portion where the label is attached and the portion where the label is not attached.
- the product [(A / B) XS] of the cross-sectional area S (ym 2 ) of the notch and ⁇ is less than 1.0 X 10 4 // m 2 , preferably It is less than 0.9 X 10 4 ⁇ 2 , more preferably 0.1 X 10 4 ⁇ 111 2, which is much larger than 1.0 X 10 4 m 2 . 1. 0 X 1 0 4 ⁇ 2 or more, the notch is very large, poor drop impact resistance.
- the notch cross-sectional area S is measured by a method described in Examples described later. Resin container
- the material of the container is not particularly limited.
- ethylene homopolymers such as high-density polyethylene, medium-density polyethylene, linear low-density polyethylene, ultra-low-density polyethylene polymerized by a single-site catalyst, or ethylene-ct-olefin copolymers, or branched Low-density polyethylene, ethylene monobutyl acetate copolymer, polyolefin resin such as polypropylene, other polyethylene terephthalate resin, polyethylene naphthalate resin, polyamide resin, polyvinyl chloride resin, polystyrene resin, polycarbonate resin Etc. can also be used.
- Blended products of a plurality of types of resins including those other than the above resins can also be used, and those blended with one kind of inorganic boiler, other modifiers, and coloring pigments can also be used.
- the layer structure may be either a single layer or a multilayer.For example, lamination of a barrier resin such as saponified ethylene monoacetate copolymer and a polyamide resin, and the accompanying adhesive resin with the main layer material. It may be what was made.
- a known blow molding method can be used.
- a direct blow molding method for example, a direct blow molding method, an injection stretch blow molding method, a pipe or sheet extrusion stretch blow molding method, or the like can be used.
- the volume of the container is not particularly limited, since the resin container with a label of 1.5 liters or more is easily ruptured by a drop impact, the present invention is applied to the container of 1.5 liters or more, preferably 2 to 5 liters. If implemented as a resin container with a label of 300 liters, more preferably 3 to 100 liters, the effects of the present invention can be more enjoyed.
- Containers smaller than 1.5 liters' have a relatively low overall weight, even if they are filled with contents, so the container weight can be set higher. In other words, since the container thickness is large and the drop impact energy is small, it does not easily burst. Fuvenore
- the label used in the present invention can be attached to a resin container and exhibits the expected effect.
- the type is not particularly limited as long as it is the same.
- the strength of the base material layer (A) containing the thermoplastic resin is 30 to 100% by weight, preferably 35 to 99% by weight of the thermoplastic resin. / 0 , more preferably 38-97 weight. / 0 , preferably 70 to 0%, preferably 65 to 1% by weight, more preferably 62 to 3% by weight of inorganic fine powder and Z or organic filler. Can be exemplified.
- thermoplastic resin used for the base layer (A) examples include propylene resins, ethylene resins such as high-density polyethylene, medium-density polyethylene, and low-density polyethylene, and polymethyl-1-penteneethylene-cyclic olefin copolymers.
- Polyolefin resins such as Nylon-6, Nylon-6,6, Nylon-6,10, Nylon-16,12, etc., polyamide-based resins, polyethylene terephthalate and its copolymers, polyethylene naphthalate, Examples thereof include thermoplastic polyester resins such as aliphatic polyesters, and thermoplastic resins such as polycarbonate, atactic polystyrene, syndiotactic polystyrene, and polyphenylene sulfide. These can be used in combination of two or more.
- a polyolefin-based resin it is preferable to use a polyolefin-based resin, and it is more preferable to use a propylene-based resin.
- the propylene resin it is preferable to use an isotactic polymer or a syndiotactic polymer obtained by homopolymerizing propylene.
- propylene having various stereoregularities obtained by copolymerizing propylene with a-olefin such as ethylene, 1-butene, 1 ⁇ xene, 1-heptene ', and 4-methyl-11-pentene is mainly used.
- a copolymer as a component can also be used.
- the copolymer may be a binary system or a ternary or higher system, and may be a random copolymer or a block copolymer. Also, usually 7 0-0 by weight of an inorganic fine powder or an organic filler to these resins 0/0, preferably 6 5-1 wt%, more preferably 6 2-3 wt% compounded full Ilm, more known Films stretched in one or two directions by the above method, films coated with a latex containing an inorganic boiler on the surface, films deposited or bonded with aluminum, and the like can also be suitably used. Also, if necessary First, a dispersant, an antioxidant, a compatibilizer, an ultraviolet stabilizer, an antiblocking agent, and the like can be added. The type of these additives is not particularly limited.
- Inorganic fine powders that can be used for labels include heavy calcium carbonate, light calcium carbonate, calcined clay, talc, barium sulfate, diatomaceous earth, magnesium oxide, zinc oxide, titanium oxide, silicon oxide, silica, and other hydroxyl-containing inorganic powders. Examples thereof include a composite inorganic fine powder having aluminum oxide or hydroxide around the core of the fine powder, and hollow glass beads.
- surface-treated products of the inorganic fine powder with various surface-treating agents can also be exemplified.
- heavy calcium carbonate, calcined clay, and talc are preferred because they are inexpensive and have good moldability. Particularly preferred is heavy calcium carbonate.
- organic boilers examples include polymers and copolymers of polyethylene terephthalate, polybutylene terephthalate, polyamide, polycarbonate, polyethylene naphthalate, polystyrene, atarylate or methacrylate, melamine resin, and polyethylene sulfide. , Polyimide, polyethylene ether ketone, polyphenylene sulfide, a homopolymer of cyclic olefin, a copolymer of cyclic olefin and ethylene, and the like.
- an incompatible resin having a higher melting point than the thermoplastic resin used is preferable to use an incompatible resin having a higher melting point than the thermoplastic resin used.
- an olefin-based resin polyethylene terephthalate, polybutylene terephthalate, polyamide, polycarbonate, polyethylene na Preferred are those selected from phthalate, polystyrene, homopolymers of cyclic olefins, and copolymers of cyclic olefins and ethylene.
- inorganic fine powders or organic fillers are more preferable from the viewpoint that the amount of heat generated during combustion is small.
- the average particle size of the inorganic fine powder or the average dispersed particle size of the organic filler used in the present invention is preferably 0.01 to 30 ⁇ , more preferably 0.1 to 20 ⁇ m, and still more preferably. Is in the range of 0.5 to 15 ⁇ . 0.1 ⁇ or more is preferable because of easy mixing with the thermoplastic resin. In addition, stretching creates voids in the interior to improve printability. In order to improve the film thickness, the thickness is preferably 20 ⁇ or less from the viewpoint that it is difficult to cause troubles such as sheet breakage during stretching and reduction in the strength of the surface layer.
- the average particle diameter of the inorganic fine powder used in the present invention is, for example, a cumulative 50% measured by a particle measuring device, for example, a laser diffraction particle measuring device “Microtrack” (trade name, manufactured by Nikkiso Co., Ltd.). It can be measured by the particle size (cumulative 50% particle size).
- the particle size of the organic filler dispersed in the thermoplastic resin by melt-kneading and dispersion can also be determined as an average value of the particle size by measuring at least 10 particles by observing the cross section of the label with an electron microscope. is there.
- one of the above may be selected and used alone, or two or more may be selected and used in combination.
- a combination of an inorganic fine powder and an organic filler may be used.
- an antioxidant When blending and kneading these fine powders into a thermoplastic resin, an antioxidant, an ultraviolet stabilizer, a dispersant, a lubricant, a compatibilizer, a flame retardant, a coloring pigment, and the like can be added as necessary. .
- an antioxidant or an ultraviolet stabilizer When the label of the present invention is used as a durable material, it is preferable to add an antioxidant or an ultraviolet stabilizer.
- an antioxidant When an antioxidant is added, it is usually added in the range of 0.001-1% by weight. Specifically, sterically hindered phenol-based, phosphorus-based, amine-based stabilizers and the like can be used.
- an ultraviolet stabilizer When an ultraviolet stabilizer is used, it is usually used within the range of 0.001% by weight. Specifically, sterically hindered amines, benzotriazole'-based, benzophenone-based light stabilizers and the like can be used.
- the dispersant and the lubricant are used, for example, for the purpose of dispersing the inorganic fine powder.
- the amount used is usually 0 .. 0 1 to 4 weight. Within the range of / 0 .
- silane coupling agents, higher fatty acids such as oleic acid and stearic acid, metal stones, polyacrylic acid, polymethacrylic acid, and salts thereof can be used.
- the type and amount of the compatibilizer are important because they determine the particle morphology of the organic boiler.
- Epoxy-modified as a preferred compatibilizer for organic fillers Polyolefin ”and maleic acid-modified polyolefin.
- the amount of the compatibilizing agent is preferably 0.05 to 10 parts by weight based on 100 parts by weight of the organic filler.
- thermoplastic resin in powder or pellet form, the inorganic fine powder, the organic or organic boiler, and the dispersant with a hensile mixer, ribbon blender, super mixer, etc. melt them with a twin-screw extruder.
- the method includes kneading, extruding into a strand shape, cutting and forming pellets, and extruding into water from a strand die and force-setting with a rotary blade attached to the die tip.
- a method in which a dispersant in the form of powder, liquid, or dissolved in water or an organic solvent is once mixed with an inorganic fine powder and a binder or an organic filler, and further mixed with another component such as a thermoplastic resin may be mentioned.
- the label of the present invention can be manufactured by combining various methods known to those skilled in the art.
- the resin film produced by any method is included in the scope of the present invention as long as the resin film satisfies the conditions described in the claims.
- a method for producing the label of the present invention various known film production techniques and combinations thereof are possible.
- a cast molding method in which a molten resin is extruded into a sheet using a single-layer or multi-layer T-die connected to a screw-type extruder, a stretched film method using voids generated by stretching, Rolling method, calender molding method, foaming method using a foaming agent, method using pore-containing particles, inflation molding method, solvent extraction method, and method of dissolving and extracting mixed components.
- the stretched film method is preferred.
- the stretching temperature should be equal to or higher than the glass transition temperature of the thermoplastic resin used in the case of amorphous resin, and in the case of crystalline resin.
- the heat treatment can be performed within a temperature range suitable for a thermoplastic resin having a temperature from the glass transition temperature of the non-crystalline portion to the melting point of the crystalline portion or less.
- longitudinal stretching using the peripheral speed difference of the jaw group, transverse stretching using a tenter oven, rolling, inflation stretching using a mandrel on a tubular film, a combination of a tenter oven and a reour motor Stretching can be performed by simultaneous biaxial stretching or the like.
- the stretching ratio is not particularly limited, and is appropriately determined in consideration of the purpose of use of the resin film of the present invention and the properties of the thermoplastic resin used.
- a propylene homopolymer or a copolymer thereof when it is stretched in one direction, it is usually about 1.2 to 12 times, preferably 2 to 10 times, In the case of stretching, the area ratio is usually 1.5 to 60 times, preferably 10 to 50 times.
- other thermoplastic resins when other thermoplastic resins are used, they are usually 1.2 to 10 times, preferably 2 to 7 times when stretched in one direction, and usually 1 to 10 times when stretched biaxially. It is 5 to 20 times, preferably 4 to 12 times.
- the stretching temperature is 2 to 160 ° C lower than the melting point of the thermoplastic resin used.
- the stretching temperature is preferably 2 to 6 ° C lower than the melting point.
- the temperature is 0 ° C lower and the stretching speed is preferably 20 to 350 m./min.
- the ability to use a label having a function of attaching a label to a resin container or a combination of a label having a function of attaching a label to a resin container and a label is used.
- a label and an adhesive sheet are used in combination can be cited, but in the present invention, it is preferable to use a label having a sticking function in advance.
- a pressure-sensitive adhesive label can be used in which a pressure-sensitive adhesive is applied to a substrate film made of the above resin material, and the container is molded and then pasted through an automatic labeling machine.
- a heat-sealable resin layer is applied to the base film.
- a heat-sealing label provided with (B) can also be used.
- Heat sealable labels are the same as resin container molding, especially by the in-mold molding method. This is extremely useful in that sometimes labeling can be performed.
- a heat-sealable resin layer (B) having a melting point lower than the melting point of the material resin of the film is formed on one surface (the surface in contact with the resin container) of the thermoplastic resin film containing the inorganic fine powder.
- a multilayer structure film was obtained by stretching the multilayer structure film at a temperature higher than the melting point of the heat-sealable resin and lower than the melting point of the thermoplastic resin containing the inorganic fine powder.
- a synthetic paper label is used.
- the material constituting Hitoshi Lumpur resin layer (B) a density of 0. 900 ⁇ 0.
- the material of the heat-sealable resin be selected in accordance with the material of the resin constituting the container body.
- the heat-sealing resin layer (B) is preferably subjected to embossing for the purpose of preventing the occurrence of a prister during in-mold molding.
- other known resin additives can be arbitrarily added as long as the performance required for the heat-sealing resin layer (B) is not impaired. Examples of such additives include dyes, nucleating agents, plasticizers, mold release agents, antioxidants, antiblocking agents, flame retardants, and ultraviolet absorbers.
- the heat-sealable resin layer (B) is formed by laminating the heat-sealable resin as a film on the base material layer (A) to form a heat-sealable resin layer (B). There is a method of forming a heat-sealable resin layer (B) by applying a resin solution in which a heat-sealable resin is dissolved in a solvent such as toluene 'or ethyl ethyl solvent to the base layer (A) and then drying it.
- a solvent such as toluene 'or ethyl ethyl solvent
- the thickness of the heat-sealable resin layer (B) is preferably from 1 to 100 ⁇ , more preferably from 2 to 20 ⁇ .
- Heat-sealable resin layer (B) is molded Sometimes it is necessary to melt the molten polyethylene or propylene resin that can be used as a parison by the heat of the resin and fuse the resin molded product and the label.
- the thickness of the heat-sealable resin layer (B) is 1 ⁇ m. It is preferably at least ⁇ .
- the length is 100 m or less, the label does not curl and the sheet-by-sheet offset printing does not become difficult, and it is relatively easy to fix the label to the mold.
- the thickness of the label of the present invention is usually 20 to 250 ⁇ , preferably 40 to 200 ⁇ . If the thickness is 20 ⁇ m or more, label insertion into the mold by the label inserter can be easily fixed at the correct position, so that problems such as label shrinkage hardly occur. If it is 250 ⁇ or less, the notch area generated at the boundary between the label and the resin container does not become too large, and the intended effect is easily obtained.
- the base material layer (A) constituting the label of the present invention may have a multilayer structure, and even if it has a two-layer structure of the core layer (A 1) and the surface layer (C), the core layer (A 1) Even if it has a three-layer structure in which a surface layer (C) and a back layer (C ') exist on the front and back surfaces, it has a multilayer structure in which another resin film layer exists between the core layer (A1) and the front and back layers. Is also good.
- the base material layer (A) may be uniaxially stretched or biaxially stretched.
- the base material layer (A) may be a combination of a biaxially stretched layer and a uniaxially stretched layer.
- each layer may be stretched individually before lamination, or may be stretched after lamination. Further, the stretched layer may be stretched again after lamination. Further, after forming the heat-sealable resin layer (B) on the base material layer (A), the whole may be stretched.
- the porosity of the label used in the present invention can be controlled by adjusting the content of the inorganic fine powder and / or the organic filler and the stretching ratio.
- the porosity of the label is 0% or more and less than 5%, preferably 0.05 to 4%, and more preferably 0.1 to 3.5% in the case of a transparent or translucent label.
- the content is 5 to 70%, preferably 7 to 65%, and more preferably 10 to 60%.
- the porosity in this specification is the true density p of the label.
- label density P Calculated by the following equation
- the label used in the present invention has an opacity of 0 to 100% (jIs-z-
- the content is from 0% to less than 70%, preferably from 0.05 to 50%, more preferably from 0.1 to 30%, particularly preferably from 0.2 to 15%.
- the content is 70 to 100%, preferably 80 to: L00%, and more preferably 85 to 100%.
- the label of the present invention may be laminated on at least one surface of another thermoplastic film, laminated paper, pulp paper, nonwoven cloth, cloth, wood board, metal plate, or the like and used as a laminate.
- another thermoplastic film to be laminated for example, it can be laminated on a transparent or opaque film such as a polyester film, a polyamide film, a polystyrene film, or a polyolefin film.
- the thickness of the laminate is also usually 20 to 250 im, preferably 40 to 200 ⁇ , similarly to the label of the present invention.
- a pigment coat layer can be provided on the surface of the base material layer ( ⁇ ) in order to improve printability.
- the pigment coat layer can be formed by performing pigment coating according to a general coated paper coating method.
- Pigment coatings used in pigment coating include pigments such as clay, talc, calcium carbonate, magnesium carbonate, aluminum hydroxide, silica, calcium silicate, and plastic pigments used in ordinary coated paper. Latex containing about 80% by weight and 20 to 70% by weight of an adhesive.
- Adhesives used in this case include latex such as SBR (styrene-butadiene copolymer rubber) and MBR (methacrylate / butadiene copolymer rubber), acrylic emulsion, starch, PVA (polybutyl alcohol). '), CMC (carboxymethylcellulose), methylcellulose and the like can be mentioned. Further, a dispersant such as sodium special polycarboxylate such as acrylic acid / sodium acrylate copolymer and a cross-linking agent such as polyamide urea resin can be added to these compounding agents. These pigment coating agents are generally used as water-soluble coating agents having a solid content of 15 to 70% by weight, preferably 35 to 65% by weight.
- the surface of the base material layer (A) can be subjected to an activation treatment.
- the activation treatment is at least one treatment method selected from corona discharge treatment, flame treatment, plasma treatment, glow discharge treatment, and ozone treatment, and is preferably corona treatment or flame treatment.
- corona treatment usually 600 ⁇ 1 2, 000 J, / m 2 (1 0 ⁇ 200W * min da 111 2), preferably 1 200 ⁇ 9000 J / m 2 ( 20 ⁇ 1 5 0W ⁇ min / m 2 ).
- it is at least 600 J / m 2 (10 W ⁇ min / m 2 )
- the effect of the corner discharge treatment can be sufficiently obtained, and no repelling will occur when the surface modifier is subsequently applied.
- a metal layer or an antistatic layer may be provided.
- the paper discharge property is further improved.
- the metal contained in the metal layer include aluminum, alumina, gold, silver, copper, zinc, tin, and nickel.
- Providing a metal layer has the advantage that the shielding properties against gas, moisture, light, magnetism, electromagnetic waves, electrostatic discharge, etc., and the design can be improved.
- the type and method of printing are not particularly limited.
- disperse pigments in known vehicles Printing can be performed by using known printing means such as gravure printing, aqueous flexo, and silk screen using the ink thus prepared.
- printing can be performed by metal evaporation, gloss printing, mat printing, or the like.
- the pattern to be printed can be appropriately selected from natural patterns such as animals, scenery, lattices, polka dots, and abstract patterns.
- the radius of curvature R at the corner is usually 5 mm or more, preferably 7 mm or more, and more preferably 1 O mm or more.
- the acute angle is preferably from 5 to 85 degrees, more preferably from 20 to 85 degrees, and even more preferably from 30 to 80 degrees.
- the label having a lower Gurley stiffness of the label for thin film molding is attached in a direction perpendicular to the direction in which the container is broken by a drop impact.
- the labeled container shown in Fig. 1 is displayed on a product shelf and dropped from the shelf, the bottom of the container is easily hit on the floor, so that the bottom of the label is easily broken at the peripheral portion of the label in the vertical direction.
- the direction of low Gurley stiffness of the immobilized molding label is applied in a direction parallel to the bottom of the container, since the label is applied in a direction perpendicular to the breaking direction of the container.
- the adhesive strength of the label may be intentionally set low as long as the effects of the present invention are not impaired and a problem such as peeling during use does not occur. If the adhesive strength is low, the resin container and the label can be easily separated when the contents are used up and disposed of, which may be preferable from the viewpoint of separating and collecting waste. In addition, there is an advantage that the volume of the resin container can be reduced by one step by peeling off the label.
- the present invention will be described more specifically with reference to Production Examples, Examples, and Test Examples. Materials, used amounts, ratios, treatment details, treatment procedures, and the like shown in the following examples can be appropriately changed without departing from the spirit of the present invention. Therefore, the scope of the present invention is not limited to the specific examples shown below.
- the MFR was JIS-K-670
- the density was JIS-K-711
- Gurley The stiffness was measured in accordance with NBS-TAPP I T543, and the 3% elongation load was measured in accordance with JIS-K-112727.
- Propylene homopolymer (Nippon Polypro Co., Ltd., Novatec PP “MA-8”, melting point 164 ° C) 67 parts by weight, high density polyethylene (Nippon Polyethylene Corp., Novatec HD “HJ580”, melting point 134 °) C, a density of 0.960 g / cm 3 )
- a resin yarn (A 1) (listed in Table 1) consisting of 10 parts by weight and 23 parts by weight of carbon dioxide powder having a particle size of 1.5 m was extruded through an extruder. After melt-kneading, the mixture was extruded into a sheet at 250 ° C from a die, and the sheet was cooled until the temperature reached about 50 ° C. After heating this sheet again to about 150 ° C, it was stretched 4 times in the machine direction using the peripheral speed of the roll group to obtain a uniaxially stretched film.
- propylene homopolymer (Nippon Polypropylene Co., Ltd., Novatec PP “MA-3”, melting point 165 ° C) 51.5 parts by weight, high-density polyethylene (HJ580 above) 3.5 parts by weight,
- a composition (C) (described in Table 1) consisting of 42 parts by weight of calcium carbonate powder having a particle size of 1.5 ⁇ and 3 parts by weight of titanium oxide powder having a particle size of 0.8 ⁇ was 240 ° C by using another extruder. The resulting mixture was melt-kneaded with C, extruded from the die into a film shape on the surface of the longitudinally stretched film, and laminated (CZA1) to obtain a surface layer / core layer laminate.
- the portion was melt-kneaded at 200 ° C by a twin-screw extruder, extruded from a die in a strand shape and cut to obtain a heat-sealing resin layer pellet (B) (described in Table 1).
- the composition (C) and the heat-sealing resin layer pellet (B) were melt-kneaded at 230 ° C. using separate extruders, and supplied to one co-extrusion die. The layers were stacked in the die. Then, the laminate (C, 'B1) is extruded from a die at 230 ° C.
- the Gurley stiffness was 0.03 m ⁇ kgf in the longitudinal stretching direction and 0.09 m ⁇ kgf in the transverse stretching direction.
- the resin stretched film obtained by the above manufacturing method must be cut using a square punching blade whose corner has a radius of curvature of 5 mm and the edge of the label is perpendicular to the label surface.
- the label (1) was obtained with.
- the porosity of this film was 36%.
- the stiffness of the Gurley was 0.05 m ⁇ kgf in the longitudinal stretching direction and 0.1 m ⁇ kgf in the transverse stretching direction, using the same labeling method as in the production example of Ravenore (1). ).
- a resin composition (A1 ') (listed in Table 1) consisting of 15 parts by weight of calcium carbonate powder having a particle size of 1.5 ⁇ m was melt-kneaded using an extruder, and then sheeted at 250 ° C from a die. The sheet was cooled to about 50 ° C. After the sheet was heated again to about 158 ° C, it was stretched four times in the machine direction using the peripheral speed of the roll group to obtain a uniaxially stretched film.
- composition (C) is melt-kneaded at 240 ° C. using another extruder, extruded into a film shape from a die on the surface of the longitudinally stretched film, and laminated (C.A 1 ′). ) To obtain a surface layer / core layer laminate.
- composition (C) and the heat-sealable resin layer pellet (B) were melt-kneaded at 230 ° C using separate extruders, and supplied to one co-extrusion die to form the die. Layered inside. Then, the laminate (C / B) is extruded into a film at 230 ° C. from a die, and a heat seal is applied to the Al and layer sides of the laminate (CA 1 ′) for the surface layer / core layer. This was extruded so that the conductive resin layer (B) was on the outside, and this was laminated.
- the density was 0.92 g / cm 3 and the wall thickness was 100 ⁇ (CA 1 ′) by adjusting the output of the extruder for the C./A 1 ′ layer.
- / 'C / B 25 ⁇ m / 50/20 ⁇ m 5 ⁇ m) to obtain a stretched resin film having a four-layer structure.
- the porosity of this film was 19%.
- the Gurley stiffness was 0.06 m-kgf in the longitudinal stretching direction and 0.11 ⁇ ⁇ kgf in the transverse stretching direction.
- Label (4) was obtained by the same label cutting method as in the production example of label (1).
- the resin composition (A 1) has a three-layer structure in which the core layer and the resin composition (C) and the heat-sealable resin layer (B) are the outermost layers.
- the sheet was extruded into a finolem so as to be laminated in a die, and the sheet was cooled to about 50 ° C. After the sheet was heated again to about 130 ° C., it was stretched four times in the machine direction using the peripheral speed of the roll group to obtain a uniaxially stretched film.
- the unstretched sheet was heated again to about 140 ° C, and then stretched 4 times in the machine direction using the peripheral speed of the roll 'group to obtain a uniaxially stretched film.
- the porosity of this film was 25%.
- the Gurley stiffness was 0.05 m ⁇ kgf in the longitudinal stretching direction and 0.02 m ⁇ kgf in the non-stretching direction.
- the label (8) was obtained by the same labeling method as in the production example of the label '(1).
- the label (10) was obtained by cutting using a square punching blade in which the edge shape of the label was an acute angle with respect to the label surface.
- the label (11) was obtained by cutting using a square punching blade having a corner with a radius of curvature of 0 mm.
- Propylene homopolymer (Nippon Polypropylene Co., Ltd., Novatec PP "MA-3", melting point: 164 ° C) 49 parts by weight, high density polyethylene (Nippon Polyethylene Co., Ltd., Novatec HD “HJ580”, mp 1 34.C, density 0 ⁇ 960 g zone 'c m 3) 5 by weight part and particle size 1.
- propylene homopolymer (Nippon Polypropylene Co., Ltd., Novatec PP “MA-3”, melting point 164 ° C), 49 parts by weight, high-density polyethylene (Nippon Polyethylene Co., Ltd., Novatec) HD “HJ580”, melting point 134 ° C, density 0.960 gcm 3 ) 5 parts by weight and 1 part by weight of 1.5 ⁇ m particle size calcium carbonate powder, high-pressure low-density polyethylene (melting point 1 10 ° C, MFR4g 10 min, Density 0.92 g. cm 3 )
- a resin composition (C ′) (listed in Table 1) consisting of 45 parts by weight was melt-kneaded at 240 ° C.
- composition (C ′) and the pellet ( ⁇ ) for the heat-sealable resin layer were melt-kneaded at 230 ° C. using separate extruders, and supplied to one co-extrusion die. Laminated inside. Thereafter, the laminate is extruded into a film at 230 ° C. from a die, and a heat-sealable resin layer (B) is formed on the core layer side of the surface layer / core layer laminate (C ′ ./A1 “). Was extruded so that the outer side was formed, and this was laminated.
- the Gurley stiffness was 0.01 lm ⁇ kgf in the longitudinal stretching direction and 0.02 m ⁇ kgf in the transverse stretching direction.
- the label (12) was obtained by the G method ⁇ Example:! ⁇ 7, Comparative example:! ⁇ 6>
- High-density polyethylene (Novatec HD “HB330” manufactured by Nippon Polytech Co., Ltd., 190 ° C ⁇ 2.16 kg melt flow rate 0.35 ⁇ . / 10 min, density 0.953 g 3 cm), using a 3-liter container mold as a mold, and a large direct blow molding machine (Tahara Co., Ltd., TPF-706B), Norrison temperature 200 ° C.
- the single-layer resin containers of Examples 1 to 7 and Comparative Examples 1 to 6 were formed by adjusting the lip interval of the dice with an empty container weight of 120 g and performing a Norrison control.
- the stiffness of the glue on the label affixed portion and the unlabeled portion around the label of each of the obtained resin containers was measured. Specifically, each empty resin container was cut out to the measurement size, and a Gurley stiffness measuring machine (manufactured by Toyo Seiki Seisakusho,
- the measurement of the notch cross-sectional area generated at the boundary between the label and the resin container was performed by a microscopic observation of the cross section of the notch portion at the break point by the practical evaluation method of drop impact resistance described below. Specifically, after cutting the boundary between the label and the resin container with a cutter in the direction perpendicular to the notch direction, the cross section was photographed using a 70-fold optical microscope, and the notch cross-sectional area was calculated from the photograph. Measured. Table 2 shows the results.
- Each of the obtained resin containers was evaluated for practical use in terms of drop impact resistance. Specifically, two days after the production of the container with the in-mold label, tap water was injected to the shoulder of the container and stored in an oven at 25 ° C for 2 days. In addition, in the evaluation of water injection and dropping immediately after the production of the container, the crystallinity of the resin was not stable and the evaluation result was largely fluctuated. Therefore, the evaluation was made after a certain period. In addition, storage at a constant temperature was evaluated based on the temperature of water. This is because the fruits are different.
- the resin container was dropped naturally from a height of 1 m with the water inlet up. Under these conditions, the number of drops until the container burst was determined according to the following criteria. The number of measurement points was 10 evaluations, and judgment was made from the average value. Table 2 shows the results. ⁇ : The container exploded when dropped 10 times or more.
- Type Copolymer (particle size 1.5 m) (particle size 0.8 // m)
- thermoplastic resin container to which an in-mold molding label is adhered, wherein a product of a Gurley stiffness (m ⁇ kgf) and a 3% elongation load (kgf) of a label affixing portion around the label is provided. And the ratio (AZ B) of the product B of the Gurley stiffness of the unlabeled area around the label and the 3% elongation load to 0.6 or less, to reduce the weight of the container and maintain productivity At the same time, it is possible to provide a resin container with a label capable of improving the drop impact destruction resistance.
Description
Claims
Priority Applications (3)
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PCT/JP2004/008558 WO2005120963A1 (ja) | 2004-06-11 | 2004-06-11 | ラベル付き樹脂容器 |
CN200480000331.XA CN100581930C (zh) | 2004-06-11 | 2004-06-11 | 带有标签的树脂容器 |
US11/024,779 US7740924B2 (en) | 2004-06-11 | 2004-12-30 | Labeled resin container |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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PCT/JP2004/008558 WO2005120963A1 (ja) | 2004-06-11 | 2004-06-11 | ラベル付き樹脂容器 |
Related Child Applications (1)
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US11/024,779 Continuation-In-Part US7740924B2 (en) | 2004-06-11 | 2004-12-30 | Labeled resin container |
Publications (1)
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WO2005120963A1 true WO2005120963A1 (ja) | 2005-12-22 |
Family
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PCT/JP2004/008558 WO2005120963A1 (ja) | 2004-06-11 | 2004-06-11 | ラベル付き樹脂容器 |
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US (1) | US7740924B2 (ja) |
CN (1) | CN100581930C (ja) |
WO (1) | WO2005120963A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7740924B2 (en) | 2004-06-11 | 2010-06-22 | Yupo Corporation | Labeled resin container |
WO2013110949A2 (en) | 2012-01-27 | 2013-08-01 | Innovia Films Limited | In-mould labelling process |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8920890B2 (en) * | 2007-01-31 | 2014-12-30 | Yupo Corporation | Label for in-mold forming and resin container with the label |
RU2480487C2 (ru) | 2007-11-21 | 2013-04-27 | Мицубиси Полиэстэ Филм, Инк. | Полиэфирная пленка, обладающая потенциальной способностью к сжатию, и способ ее изготовления |
ATE555893T1 (de) | 2008-05-28 | 2012-05-15 | Avery Dennison Corp | Biaxial gedehnte mehrschichtfolie und zugehöriges etikett und verfahren |
DE102010044243A1 (de) * | 2010-09-02 | 2012-03-08 | Khs Gmbh | Verfahren zum digitalen Bedrucken von Behältern sowie Behälter mit wenigstens einem Aufdruck oder Druckbild |
WO2017062982A1 (en) * | 2015-10-09 | 2017-04-13 | General Mills, Inc. | Moisture barrier films |
CN108472971A (zh) * | 2015-12-28 | 2018-08-31 | 宝洁公司 | 其上具有转移材料的三维制品 |
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WO2005120963A1 (ja) | 2004-06-11 | 2005-12-22 | Yupo Corporation | ラベル付き樹脂容器 |
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2004
- 2004-06-11 WO PCT/JP2004/008558 patent/WO2005120963A1/ja active Application Filing
- 2004-06-11 CN CN200480000331.XA patent/CN100581930C/zh active Active
- 2004-12-30 US US11/024,779 patent/US7740924B2/en active Active
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JPH08142171A (ja) * | 1994-11-17 | 1996-06-04 | Toppan Printing Co Ltd | ラベル付きプラスチック容器 |
JPH08254956A (ja) * | 1995-03-16 | 1996-10-01 | Oji Yuka Synthetic Paper Co Ltd | インモールド成形用ラベル |
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US7740924B2 (en) | 2004-06-11 | 2010-06-22 | Yupo Corporation | Labeled resin container |
WO2013110949A2 (en) | 2012-01-27 | 2013-08-01 | Innovia Films Limited | In-mould labelling process |
US10744691B2 (en) | 2012-01-27 | 2020-08-18 | Innovia Films Limited | In-mould labelling process |
US10906218B2 (en) | 2012-01-27 | 2021-02-02 | Innovia Films Limited | In-mould labelling process |
EP3912788A1 (en) | 2012-01-27 | 2021-11-24 | Innovia Films Limited | In-mould labelling process |
Also Published As
Publication number | Publication date |
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CN1697760A (zh) | 2005-11-16 |
US20050276943A1 (en) | 2005-12-15 |
US7740924B2 (en) | 2010-06-22 |
CN100581930C (zh) | 2010-01-20 |
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