WO2004049284A1 - Etiquette surmoulee comprenant une partie detachable - Google Patents

Etiquette surmoulee comprenant une partie detachable Download PDF

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Publication number
WO2004049284A1
WO2004049284A1 PCT/JP2003/014902 JP0314902W WO2004049284A1 WO 2004049284 A1 WO2004049284 A1 WO 2004049284A1 JP 0314902 W JP0314902 W JP 0314902W WO 2004049284 A1 WO2004049284 A1 WO 2004049284A1
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WO
WIPO (PCT)
Prior art keywords
label
layer
mold
heat
container
Prior art date
Application number
PCT/JP2003/014902
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English (en)
Japanese (ja)
Inventor
Takashi Funato
Takatoshi Nishizawa
Masaki Shiina
Original Assignee
Yupo Corporation
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Yupo Corporation filed Critical Yupo Corporation
Priority to AU2003284630A priority Critical patent/AU2003284630A1/en
Publication of WO2004049284A1 publication Critical patent/WO2004049284A1/fr
Priority to US11/057,252 priority patent/US7514131B2/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin

Definitions

  • the present invention relates to an in-mold label having a cut-off portion, which is attached to a thermoplastic resin container manufactured by difference molding and hollow molding simultaneously with container molding.
  • thermoplastic resin is injected into the mold, and the container is molded by injection molding, hollow molding, differential pressure molding, foam molding, etc., and the label is attached to the container at the same time.
  • Some labels are known as labels used in the in-mold molding method (Japanese Patent Application Laid-Open No. 58-69015). No.).
  • a label with a separating portion such as a coupon
  • a label with a separating portion such as a coupon
  • Labels with cut-outs may be provided with a perforation around the cut-out, so that the purchaser can easily peel off the cut-off after purchase, Adjust the amount of adhesive applied on the back side of the cut-off portion (see US Pat. No. 5,172,936), or do not apply adhesive only to that portion. What has been proposed.
  • such a label having a cut-off portion may be squeezed by the impact given during transportation after filling the contents into the resin container to which it is attached, or during the display of the product, or by squeezing the resin container.
  • the load applied to the container during use has the disadvantage that the cut-off portion is more likely to rise than the container.
  • the cut-off portion may be detached from the perforation when the cut-off portion is peeled, despite the perforation being provided. There were problems such as tears in the detached part, making it difficult to remove the detached part cleanly.
  • the separation part when used as a coupon, etc., if the separation part is only on the surface, There is also a demand for printing on the back side to be adhered to the container.
  • surface activation treatment or the like is performed so that the back side has sufficient adhesiveness to the printing ink, or when printing ink is printed, the adhesive strength between the cut-off portion and the container is reversed. There was a problem that it dropped significantly and the cut-off part was easily lifted up from the container. Disclosure of the invention
  • the inventors of the present invention have made it possible to perform double-sided printing, so that the cut-off portion does not float up from the container during transportation and use, and is easy to peel off when the cut-off portion is peeled from the container.
  • the purpose of this study was to provide an in-mold label that would not be damaged.As a result of the study, we set the wetting index of the label surface to be printed and the adhesion strength between the cut-off part and the resin container within a specific range. That is, the present invention is directed to an in-mold label comprising a thermoplastic resin film base layer and a heat-sealable resin layer.
  • the wetting index of the heat-sealable resin layer surface is 34 to 73 mN / m
  • the label comprises a label body and a cut-off portion, and can be separated between the label body and the cut-off portion.
  • the label has a bond strength of 80 to 27 gf / 1 O mm between the cut-off portion and the container when the label is attached to the container during the in-mold molding of the thermoplastic resin container.
  • Another object of the present invention is to provide an in-mold label characterized by the following.
  • the peeling portion has a peeling start portion, and a release agent is applied to 55 to 80% of the surface of the heat-sealable resin layer at the separating portion.
  • the length of the slit portion constituting the perforation is 4 to 10 mm, and the interval between adjacent slit portions is 0.3 to 0.6 mm.
  • the surface of the thermoplastic resin film substrate layer and / or the surface of the heat-sealable resin layer of the in-mold label of the present invention is subjected to an activation treatment, and an antistatic layer is provided. Is preferably applied.
  • the present invention also provides a container to which the label for in-mold is attached.
  • the adhesive strength range between the cutoff portion and the container is adjusted to 80 to 270 gf / 1 O mm, and the container to which such a label is adhered is 10 times. Even after squeezing, the detached part has good appearance without lifting, and the detached part can be easily peeled off by hand.
  • FIG. 1 is a view showing the structure of an in-mold label of the present invention.
  • 1 is a label for in-mold
  • 2 is a separation part
  • 3 is a label body
  • 4 is a peeling start part
  • 5 is a container.
  • FIG. 2 is a view showing a container to which the label manufactured in Example 1 is attached.
  • the numerical range represented by using “to” means a range including the numerical values described before and after “to” as the lower limit and the upper limit.
  • the in-mold label having a cut-off portion of the present invention is basically composed of a thermoplastic resin film base layer, and a heat-sealing resin layer formed on a side of the base layer to be adhered to the container.
  • Various types of information including coupons are printed on the surface of the base material layer, and a part of the label is provided with a cutout section separated by a perforation so as to be separated from the label body.
  • a release agent adheresive force reducing agent
  • at least one end of the cutoff portion may be provided with a peeling start portion in which the amount of the release agent is adjusted more than other portions of the cutout portion.
  • FIG. 1 shows a specific embodiment of the in-mold label of the present invention.
  • 2 indicates a cut-off portion
  • 3 indicates a label body
  • 4 indicates a peeling start portion. Peeling start part 4 with finger
  • the cutout 4 can be completely separated from the container body 3 by cutting along the perforations.
  • the details of the structure of the separation section 2 and the label body 3 and the shape of the peeling start section 4 are not particularly limited, and various modes as illustrated in (1) to (4) of FIG. It is possible.
  • thermoplastic resin film base layer examples include propylene-based resins, polyethylene resins such as high-density polyethylene and medium-density polyethylene, and polyolefin-based polymers such as polymethyl-11-pentene and ethylene-cyclic olefin copolymer.
  • thermoplastic resins having a melting point in the range of 130 to 280 ° C. such as propylene-based resin, high-density polyethylene, and polyethylene terephthalate resin, are preferred. Further, those having a melting point higher by at least 15 ° C than the melting point of the thermoplastic resin constituting the heat-sealing resin layer described later are preferable.
  • propylene resins are particularly preferred in terms of chemical resistance, cost, and the like.
  • propylene-based resin examples include a propylene homopolymer exhibiting isotactic or syndiotactic stereoregularity, and propylene, ethylene, 1-butene, 1-hexene, 1-heptene, and 4-methyl-1-methylbenzene.
  • Copolymers with ⁇ -olefin such as 1-pentene can be exemplified. These copolymers may be binary, ternary or quaternary, and may be random copolymers or block copolymers.
  • inorganic fine powder or organic fine powder can be appropriately blended with the above-mentioned thermoplastic resin.
  • the type of the inorganic fine powder or the organic fine powder is not particularly limited.
  • inorganic fine powder examples include heavy calcium carbonate, light calcium carbonate, calcined clay, talc, barium sulfate, diatomaceous earth, magnesium oxide, zinc oxide, titanium oxide, silicon oxide, and the like.
  • heavy calcium carbonate, calcined clay, and talc are preferable because they are inexpensive and have good formability.
  • the organic fine powder for the purpose of forming pores, select and use a resin that has a higher melting point or glass transition point than the thermoplastic resin used for the base material layer and is incompatible with each other. Is preferred. Specific examples include polymers or copolymers of polyethylene terephthalate, polybutylene terephthalate, polyamide, polycarbonate, polyethylene naphthalate, polystyrene, acrylate or methacrylate, melamine resin, polyethylene sulphite, and polyimidate. And polyphenylene sulfide, homopolymers of cyclic olefins, and copolymers (COC) of cyclic olefins with ethylene and the like.
  • a polyolefin resin when used as the above-mentioned thermoplastic resin, a homopolymer of a polyethylene terephthalate, a polybutylene terephthalate, a polyamide, a polycarbonate, a polyethylene naphthalate, a polystyrene, and a cyclic olefin may be used. It is preferable to select and use a copolymer (COC) such as ethylene.
  • COC copolymer
  • One of the above fine powders may be used alone, or two or more may be selected and used in combination. When two or more kinds are used in combination, an inorganic fine powder and an organic fine powder may be mixed and used.
  • a dispersant an antioxidant, a compatibilizer, an ultraviolet stabilizer, an anti-opening agent and the like can be added.
  • the thermoplastic resin film base layer may be a single layer or multiple layers. In the case of a multi-layer structure, a core layer and a front layer and a back layer are disposed on both sides of the core layer. May be. When inorganic or organic fine powders are blended with these, the types and blending amounts thereof may be the same or different.
  • the film constituting the thermoplastic resin film base layer is preferably stretched in at least one direction.
  • the thermoplastic resin film base layer is composed of a plurality of layers, at least one of the layers is preferably stretched. When a plurality of layers are stretched, they may be stretched individually before laminating each layer, or may be stretched after laminating. In addition, the stretched layer may be stretched again after lamination. Further, after forming the heat-sealing resin layer on the thermoplastic resin film base layer, the whole may be stretched.
  • the stretching ratio can be arbitrarily adjusted. Also, since the resin is oriented in the flow direction of the film, it is possible to obtain a label having a high tensile strength and a small dimensional change due to the tension at the time of printing as compared with an unstretched film.
  • the stretching temperature should be set above the glass transition point of the thermoplastic resin used for non-crystalline resins, and above the glass transition point of non-crystal parts to the melting point of crystal parts for crystalline resins. Can be.
  • thermoplastic resin film substrate layer of the present invention include a film obtained by blending the above-mentioned thermoplastic resin with 8 to 80% by weight of an inorganic or organic fine powder, and further stretched in a uniaxial or biaxial direction.
  • a film coated with a latex containing an inorganic filler on the surface, a film formed by vapor deposition or bonding of aluminum, and the like can be given.
  • biaxial resin compositions containing 5 to 30% by weight of inorganic fine powder, 3 to 20% by weight of high-density polyethylene and 92 to 50% by weight of propylene-based resin.
  • a stretched film as a core layer, on both side surfaces, the inorganic fine powder 3 5-6 5 weight 0/0, high density polyethylene 0-1 0% by weight and the propylene-based resins of 5 5-3 5 wt%
  • a microporous stretched resin film in which a uniaxially stretched film of a resin thread and a uniaxially stretched film is disposed as a front layer and a back layer, as a thermoplastic resin film base layer, such as printability and thermal shrinkage prevention, can be achieved.
  • the thickness of the thermoplastic resin film base layer is preferably 20 to 500 ⁇ . And more preferably 30 to 200 ⁇ . If the thickness is less than 20 jum, the supply of the label to the mold by the automatic label supply device tends not to be fixed at the proper position, or the label tends to be shirred. On the other hand, if it exceeds 500 ⁇ , the strength at the boundary between the resin molded product and the label formed by the in-mold molding is reduced, and the drop resistance of the resin molded product tends to be inferior.
  • the type of the resin constituting the heat-sealing resin layer is not particularly limited as long as it has a function of attaching to the resin material constituting the container to which the label is attached by heating during the in-mold molding.
  • Examples of preferred resins density 0.9 00 to 0.935 Low Density to medium density high-pressure polyethylene of gZ cm 3, density 0. 880 ⁇ 0.
  • high-pressure polyethylene or linear linear polyethylene having the above density, a crystallinity (X-ray method) of 10 to 60%, and a number average molecular weight of 10,000 to 40,000 is preferable.
  • ethylene from 40 to 98 weight 0/0 and the ⁇ - Orefuin 60-2 wt% of carbon number 3-30
  • meta port Sen catalyst especially meth port Sen alumoxane catalyst or, For example, using a catalyst comprising a meta-mouth compound as disclosed in International Publication WO 92/01723 and a compound which reacts with the metal-acene compound to form a stable anion.
  • the linear linear polyethylene obtained by polymerization is most suitable.
  • One of these polyolefin-based resins may be used alone, or two or more may be used in combination.
  • resin additives can be arbitrarily added to the heat-sealable resin layer as long as the performance required for the heat-sealable resin layer is not impaired. That 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 may be formed by laminating the heat-sealable resin as a film on a base material layer to form a heat-sealable resin layer.
  • the thickness of the heat-sealing resin layer is preferably from 1 to 100 ⁇ m, more preferably from 2 to 20 ⁇ .
  • the heat-sealable resin layer needs to be melted by the heat of molten polyethylene or propylene-based resin, which can be used as a parison during molding, to fuse the resin molded product and the label.
  • the thickness of the resin layer is preferably at least 1 ⁇ . On the other hand, if it exceeds ⁇ ⁇ ⁇ , the label will curl, making offset printing difficult, and fixing the label to the mold tends to be difficult.
  • the thermoplastic resin film base layer and the heat-sealable resin layer have a wetting index of 34 to 7 SmNZnu, preferably 38 to 7 OmNZm, on the surface. . If the wetting index is less than 34 mNZm, the adhesion of the printed ink is poor and the ink tends to fall off. If it exceeds 73 mN / m, the front and back of the wound film tend to cause blocking.
  • the wetting index in the present specification is a value measured according to JISK-6678.
  • thermoplastic resin film substrate layer and / or the surface of the heat-sealable resin layer are activated by a known activation treatment such as edge discharge or flame plasma, and if necessary, an antistatic layer described later.
  • a known activation treatment such as edge discharge or flame plasma, and if necessary, an antistatic layer described later.
  • the printability can be improved by adjusting the null index.
  • thermoplastic resin film base layer and / or the heat-sealable resin layer may be provided with an antistatic layer after the activation treatment described above.
  • an antistatic layer As a result, the paper feeding and discharging properties on the printing press are improved, and troubles such as inserting two sheets in the paper feed unit during offset printing and deteriorating the paper alignment in some parts of the delivery can be prevented.
  • the antistatic layer contains, for example, the following component (a) having antistatic properties alone, or a mixture of the following components (b) and (c) having ink adhesion properties.
  • the solution can be formed by coating and drying.
  • the tertiary or quaternary nitrogen-containing acrylic polymer as the component (a) is composed of the following monomers (i) and (ii) And (iii) can be obtained by copolymerization.
  • R 1 represents a hydrogen atom or a methyl group
  • R 2 and R 3 each represent a lower alkyl group (preferably having 1 to 4 carbon atoms, particularly preferably having 1 to 4 carbon atoms).
  • the ⁇ 2), R 4 is a saturated or unsaturated alkyl group or a cycloalkyl group having 1-2 2 carbon atoms
  • X- is quaternized N + pair Anion (e.g. halides, especially chloride)
  • M represents an alkali metal ion (for example, sodium or potassium)
  • A represents an alkylene group having 2 to 6 carbon atoms.
  • R 1 represents a hydrogen atom or a methyl group
  • R 5 represents an alkyl group, alkylene group or cycloalkyl group having 1 to 24 carbon atoms. Specific examples include butyl acrylate, force prill acrylate, stearyl methacrylate, and the like.
  • hydrophobic vinyl monomer which is the component (iii) include styrene and chloride butyl.
  • the water-soluble polymer having particularly preferable antistatic properties includes a monomer of the component (i) represented by the general formula (VI) In the monomers represented by, X— is C 1 _, which is “Saftoma ST-1100” or “Saftoma ST 110” from Mitsubishi Chemical Corporation. ",” Saftoma ST-1330 ", and” Saftma ST-3200 ".
  • the polyimine-based compound as the component (b) is a primer for enhancing the adhesive force.
  • Z represents a group represented by one NH—R 9 or a polyamine / polyamide residue
  • R 6 to R 9 each independently represent a hydrogen atom or an alkyl group having 1 to 24 carbon atoms.
  • the above-mentioned component (c), a polyamine polyamide 'epichlorhydrin adduct, is also a primer for enhancing the adhesive strength.
  • a primer is, for example, a polyamide comprising a saturated dibasic carboxylic acid having 3 to 10 carbon atoms and a polyalkylene polyamine.
  • Water-soluble and cationic thermosetting resins obtained by reacting phenol with epichlorohydrin.
  • Such a thermosetting resin is described in detail in Japanese Patent Publication No. 35-34747.
  • Specific examples of the saturated dibasic carboxylic acid having 3 to 10 carbon atoms include dicarboxylic acids having 4 to 8 carbon atoms, particularly adipic acid.
  • specific examples of the polyalkylene polyamine include polyethylene polyamine, particularly ethylene diamine, diethylene triamine, and triethylene tetramine, and particularly, diethylene triamine.
  • Water-soluble inorganic compounds such as alum, water-soluble organic solvents such as ethyl alcohol and isopropyl alcohol, surfactants, water-soluble polymerization agents such as ethylene glycol and polyvinyl alcohol, and other auxiliary materials as required You can mix it.
  • These components (a), (b) and (c) are used as an aqueous solution having a total solid content of generally 0.1 to 10% by weight, preferably 0.1 to 5% by weight.
  • a normal application method such as a die, a bar, a launale, a blade, an air knife, a size press, a spray coat, and a combination thereof can be adopted. By drying this at normal temperature to 100 ° C., an antistatic layer having a thickness of 0.005 to 2 ⁇ can be obtained.
  • the mixing ratio of the components (a), (b) and (c) is such that the polyimine compound of (b) is 0 to 300 parts by weight, preferably 100 parts by weight of the nitrogen-containing acryl resin of (a). 0 to 200 parts by weight, and the epichlorohydrin adduct of the polyamine polyamide (c) is 0 to 300 parts by weight, preferably 0 to 200 parts by weight.
  • the surface of the thermoplastic resin film base layer and / or the surface of the heat-sealable resin layer are less likely to be charged with static electricity, and the paper feeding / discharging property is improved.
  • the surface resistivity measured by JIS K-6911 of each of the thermoplastic resin film base layer and the Z or heat sealing resin layer is preferably in the 9 to 15 power range, more preferably in the 9 to 12 power range. is there.
  • thermoplastic resin film base layer On the surface of the thermoplastic resin film base layer and the surface of the heat-sealing resin layer of the present invention, various information such as a product name, a character, a percode, a manufacturer, a sales company name, a use method, a coupon, and a lottery are printed. can do.
  • a printing method for example, various printings such as gravure printing, offset printing, letter press printing, flexo printing, and screen printing can be performed.
  • printing on the heat-sealable resin layer side can use the printing ink varnish itself as a release agent.
  • the surface of the thermoplastic resin film base layer can be deposited with metal such as aluminum or hot stamped, and an overcoat layer such as lamination or varnishing can be formed.
  • the peeling start portion may be formed with a width of (a) in FIG. If the width of the peeling start portion is less than 3 mm, it is difficult to make a trigger for peeling and it is difficult to grasp by hand.If the width exceeds 1 Omm, the peeling start portion is turned up after in-mold molding. And the container looks worse. Furthermore, if a notch is formed at the end of the boundary between the separation start portion and the container, the separation portion can be more easily peeled off.
  • the in-mold label of the present invention is capable of preventing the detached portion from rising even when a shock or load is applied to the container at the time of filling, transporting, displaying product shelves, and during normal use of the resin container to which the label is attached.
  • the adhesive strength between the cut portion and the resin container is in a specific range, such that the cut portion can be peeled off, that is, 80 to 270 gf / 1 Omm, preferably 100 to 250 gf Zl 0 mm. It is characterized in that it is preferably adjusted to the range of 120 to 240 gf / 1 Omm. If the adhesive strength is less than 80 gf Zl 0 mm, the floating of the cut-off portion tends to be a problem. Conversely, if the adhesive strength is greater than 270 gf / 1 Omm, it will be difficult to peel off the cut off part from the container.
  • the adhesive strength is adjusted by applying a release agent to the surface of the heat-sealable resin layer at the separation portion.
  • a release agent for 55 to 80% of the area of the adhesive between the cutoff portion and the container, and to provide a release agent for 60 to 75%. Is more preferred. If the area of the release agent is out of the range of 55 to 80%, it tends to be difficult to maintain the adhesive strength between the cut-off portion and the resin container in the above specific range.
  • the amount of the release agent to be applied to the above-mentioned peeling start part is preferably more than 80% and up to 95%, more preferably more than 80% and up to 90% of the area of the peeling start part.
  • Various printing inks and varnishes can be used as the release agent.
  • inks include any of the following: offset ink, UV offset ink, gravure ink, silk screen ink, flexo ink, UV flexo ink, and the like.
  • a release varnish containing silicon, a release varnish containing a fluorinated compound, a wax, or the like can be used.
  • Special method for applying release agent Although there is no limitation, it is generally performed by letterpress printing, offset printing, gravure printing, flexographic printing, screen printing, or the like.
  • the degree of lifting of the cut-off portion was determined by a test in which a resin container with a label attached was squeezed.
  • the squeeze test is performed by a container deformation test method described later, assuming that a resin container to which a label is attached is usually used.
  • One-sided or two-sided imprint labels are separated into labels of the shape and dimensions necessary for attaching resin containers by punching, but during or before this punching It is preferable to provide perforations around the cut portion (excluding the peeling start portion) to facilitate the peeling of the cut portion.
  • a hot needle, an electron beam, a laser beam, or the like is used, and the length of the slit portion is 4 to 10 mm, preferably 5 to 8 mm, and the interval between adjacent slit portions is 0.3 to 0.3 mm. It is formed so as to have a thickness of 6 mm, preferably 0.3 to 0.5 mm.
  • the length of the slit portion in the present specification means the length of the through hole forming the slit in the longitudinal direction.
  • the length of the perforated slit is too short, or if the interval between adjacent slits is too long, it is difficult to peel off the perforated shape, and conversely, the length of the perforated slit If the label is too long or the distance between adjacent slits is too short, problems such as breakage or breakage may easily occur when handling the label.
  • the slit wall on the heat-sealable resin layer side is formed smoothly, and the perforations are formed during in-mold molding.
  • the outer wall portion of the slit does not cut into the outer wall of the container, and the separation portion can be more easily peeled off.
  • the in-mold label of the present invention includes a base material layer for an in-mold label in a mold cavity such as a differential pressure molding such as vacuum molding or air pressure molding, or a hollow molding in which a parison is pressure-bonded to the inner wall of a mold by air pressure.
  • a differential pressure molding such as vacuum molding or air pressure molding
  • a hollow molding in which a parison is pressure-bonded to the inner wall of a mold by air pressure.
  • the label and the resin container are molded integrally after the label is fixed in the mold, so there is no unexpected deformation of the label and the container itself and the label are in close contact with each other.
  • the strength is strong, there are no blisters, and the container decorated with labels has a good appearance.
  • the separation part is peeled off according to the perforation, and the separation part is easily formed. Can be.
  • thermoplastic resin material used for the container to which the label is attached is not particularly limited.
  • Preferred examples include thermoplastic resins such as propylene-based resin, polyethylene (preferably high-density polyethylene), polychlorinated vinyl, polyethylene terephthalate, and polyamide, which are the same as those used for the label for the in-mold. it can.
  • the type of these thermoplastic resins can be appropriately selected according to the purpose of use, use environment, and use mode of the molded article after in-mold molding.
  • the preparation of the catalyst was carried out according to the preparation method disclosed in Japanese Patent Application Laid-Open (JP-A) No. 61-130314. That is, to a complex of ethylene-bis (4,5,6,7-tetrahydroindenyl) zirconium dichloride (2.0 mmol), methylalumoxane (manufactured by Toyo Stoffer Co., Ltd.) was added at a molar ratio of 1,000 to the above complex. Then, a catalyst solution was prepared by diluting with toluene to 10 liters, and polymerization was carried out by the following method.
  • JP-A Japanese Patent Application Laid-Open
  • a mixture of ethylene and 11-hexene was supplied to a 1.5-liter continuous stirring type autoclave continuous reactor so that the composition of 1-hexene was 80% by weight.
  • the reaction was carried out at 160 ° C. while maintaining the internal pressure at 1,600 kg / cm 2 .
  • the MFR is 18 g / 10 min
  • the density is 0.898 g / cm 3
  • the Q value is
  • the TREF elution curve has one peak, the peak temperature of which is 50 ° C, and the HZW at the peak temperature is 1.5 ethylene-olefin copolymer (1 xylene content 22% by weight). Obtained.
  • the integrated elution volume is 2.1% at 10 ° C and 20%
  • Polypropylene homopolymer (trade name “Novatech PP MA-8”, melting point 164 ° C, manufactured by Nippon Polychem Co., Ltd.) 67% by weight, high-density polyethylene (trade name “Novatech HD HJ580”, melting point 134 ° C , Nippon Polychem Co., Ltd.) 10 weight 0/0 and an average particle size of 1. 5 ⁇ consisting of calcium carbonate powder 23% by weight of the resin composition (Alpha), was kneaded at 250 ° C using an extruder After that, the film was extruded from a die and cooled to a temperature of about 50 ° C. After the film was heated again to about 150 ° C, it was stretched four times in the machine direction using the peripheral speed of the roll group to obtain a uniaxially stretched film as a core.
  • propylene homopolymer (trade name “Nova Tech PP MA- 3 ", Japan Polychem, Ltd. Co., Ltd.) 51.5 weight 0/0
  • high density poly ethylene (trade name” Novatec HD HJ 580 ", Japan Polychem Co., Ltd.) 3.5% by weight
  • average particle size 1. 5 mu 42 wt% calcium carbonate powder of m and the average particle diameter 0. 8 zm titanium oxide powder 3 wt 0/0 from a composition of (C), and Hitoshi one
  • This four-layer film is guided to a tenter oven, heated to 155 ° C, stretched 7 times in the transverse direction using a tenter, then heat-set at 164 ° C, cooled to 55 and slit the ears.
  • corona discharge treatment was performed on both the front and back surfaces at a strength of 50 W / m 2 Z.
  • an aqueous solution of a composition containing the following (a), (b) and (c) was applied to the surface layer side and dried to form an antistatic layer.
  • thermoplastic resin film substrate layer surface layer
  • heat-sealable resin layer 0.5% by weight
  • Water Residual surface of thermoplastic resin film substrate layer (surface layer) and heat-sealable resin layer was measured using an ACCU DYNE TESTJ made by Diversified Enterprises and found to be Y OmNZm 4 2mNZm, respectively.
  • the obtained laminated stretched resin film having a five-layer structure (the antistatic layer ZB / A / C / D) was cut into a chrysanthemum half size by a sheet cutter to obtain a sheet sheet for an in-mold label.
  • the content of the coupon was printed using the UV offset ink on a portion corresponding to a cut-off portion on the surface of the heat-sealable resin layer on the back side of the sheet (label).
  • a release varnish containing silicon (trade name “Oil-based Hakuri OP Varnish”, manufactured by T & K TOKA) was printed using the same offset printing press. These inks and mist were printed so as to be 75% of the area of the cut-off portion. Further, at the peeling start portion, printing was performed so as to be 90% of the area using the varnish described above. These inks and The adhesion of the varnish was good.
  • This hollow container did not fade in label printing, and did not show shrinkage of the label or generation of pristers. In addition, there was no lifting of the separation part from the container.
  • Example 2 In the same manner as in Example 1 except that the coating area was set to 60% of the area of the cut-off portion in the coating of the release agent, an in-mold label having a cut-off portion and a resin made of the label were attached. A container was obtained. In this hollow container, label printing did not fade, and no label shrinkage or blistering was observed. Also, there was no lifting of the cut-off part from the container.
  • Example 1 after coating on the surface layer side, an aqueous solution containing only 1.0% by weight of the above-mentioned quaternary nitrogen-containing acrylic terpolymer (a) was further coated on the back side, followed by drying. After drying, an antistatic layer was provided on both front and back surfaces. At this time, the wetting index of the surface of the heat-sealable resin layer on the back side was 5 OmN / m. Otherwise in the same manner as in Example 1, a resin container having an in-mold label and a label having a cut-off portion attached thereto was obtained. Also in this hollow container, there was no fading in label printing, and no shrinkage and blistering of the label were observed. In addition, there was no lifting of the separation part from the container.
  • an in-mold label having a cut-off portion was applied in the same manner as in Example 1 except that the coating area was 90% of the area of the cut-off portion.
  • a resin container was obtained.
  • an in-mold label having a cut-off portion was applied in the same manner as in Example 1 except that the coating area was set to 50% of the area of the cut-off portion. A resin container was obtained.
  • Example 1 In accordance with the content of Example 1 described in JP-A-6-308886, a thin mold label having a cut-off portion and a resin container to which the label was attached were obtained.
  • An in-mold label having a cut-off portion and a resin container to which the label was attached were obtained in the same manner as in Example 1 except that the corona discharge treatment was changed to 10 WZm 2 / min.
  • the wetting indices of the surfaces of the thermoplastic resin film base layer and the heat-sealing resin layer were 66 mNZm and 32 mN / m, respectively.
  • Example 6 An in-mold label having a cut-off portion and a resin container to which the label was attached were obtained in the same manner as in Example 1 except that the corona discharge treatment was not performed.
  • the wetting indices of the surfaces of the thermoplastic resin film substrate layer and the heat-sealing resin layer were 31 m NZm and 30 ra NZm, respectively.
  • An in-mold label having a cut-off portion and a resin container to which the label was attached were obtained in the same manner as in Example 3, except that the corona discharge treatment was not performed on the heat seal layer side in Example 3.
  • the wetting indices of the surfaces of the thermoplastic resin film base material layer and the heat sealing resin layer were 7 OmNZm and 32 mN / m, respectively.
  • X Cannot be cut. (Some of the cut part is torn during peeling and cannot be cut.)
  • Each label is used as an antistatic property on the paper surface, which is a measure of stable printability.
  • the surface specific resistance of the front and back surfaces was measured according to JISK-6911 using an insulation resistance meter DSM-8103 manufactured by Toa Denpa Kogyo KK.
  • the degree of adhesion of the ink after drying with a UV irradiator was evaluated according to the following criteria by observing the state when Nichipan “Cellotape (registered trademark)” was adhered and peeled off. .
  • the ink does not come off and the base layer may break down.

Landscapes

  • Laminated Bodies (AREA)

Abstract

L'invention concerne une étiquette surmoulée, qui comprend une couche de base en résine thermoplastique et une couche de résine thermocollable. L'invention se caractérise en ce que la surface de la couche de base en résine thermoplastique et/ou la la surface de la couche de résine thermocollable présente un indice de mouillage de 34 à 73 mN/m; que l'étiquette est constituée d'une partie principale et d'une partie détachable et présente des perforations entre la partie principale et la partie détachable de sorte que la partie détachable puisse être séparée de la partie principale; et que, lorsque l'étiquette est collée à un récipient en résine thermoplastique dans une opération de décoration dans le moule, la force d'adhérence entre la partie détachable et le récipient est comprise entre 80 et 270 gf/10mm. L'étiquette surmoulée de l'invention présente des caractéristiques telles que les deux faces de l'étiquette sont imprimables, la partie détachable ne se détache pas du récipient pendant le transport ou l'utilisation, et la partie détachable, lorsqu'on désire l'enlever, se pèle facilement du récipient sans se détériorer.
PCT/JP2003/014902 2002-11-22 2003-11-21 Etiquette surmoulee comprenant une partie detachable WO2004049284A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU2003284630A AU2003284630A1 (en) 2002-11-22 2003-11-21 In-mold label having removable part
US11/057,252 US7514131B2 (en) 2002-11-22 2005-02-15 In-mold label with separable part

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2002339325 2002-11-22
JP2002-339325 2002-11-22
JP2003-036083 2003-02-14
JP2003036083 2003-02-14

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US11/057,252 Continuation US7514131B2 (en) 2002-11-22 2005-02-15 In-mold label with separable part

Publications (1)

Publication Number Publication Date
WO2004049284A1 true WO2004049284A1 (fr) 2004-06-10

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Application Number Title Priority Date Filing Date
PCT/JP2003/014902 WO2004049284A1 (fr) 2002-11-22 2003-11-21 Etiquette surmoulee comprenant une partie detachable

Country Status (2)

Country Link
AU (1) AU2003284630A1 (fr)
WO (1) WO2004049284A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1768079A4 (fr) * 2004-05-21 2010-10-13 Yupo Corp Étiquette de moulage interne et pièce moulée en résine avec étiquette
WO2018003803A1 (fr) * 2016-06-30 2018-01-04 株式会社ユポ・コーポレーション Étiquette dans un moule et moulage dans un moule

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06308886A (ja) * 1993-04-27 1994-11-04 Oji Yuka Synthetic Paper Co Ltd クーポン券付インモールド用ラベル
JPH09230791A (ja) * 1996-02-22 1997-09-05 Kao Corp 熱活性型ラベル及びラベル付き成形体の製造方法
JPH10315410A (ja) * 1997-05-16 1998-12-02 Toppan Printing Co Ltd ラベル、ラベルの製造方法およびラベル付きプラスチック容器
JP2000025068A (ja) * 1998-07-08 2000-01-25 Dainippon Printing Co Ltd インモ−ルドラベリング用ラベルおよびそれを使用したインモ−ルドラベル成形容器
US20010003626A1 (en) * 1999-12-03 2001-06-14 Yoshihisa Syoda Coated film
JP2001202020A (ja) * 2000-01-21 2001-07-27 Dainippon Printing Co Ltd 積層型剥離ラベル及びその製造方法
US20020050319A1 (en) * 2000-07-24 2002-05-02 Yupo Corporation Label for in-mold decorating and labeled resin molded article
JP2002316394A (ja) * 2001-04-19 2002-10-29 Mitsubishi Chem Mkv Co ポリオレフィン系樹脂製積層フィルム

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06308886A (ja) * 1993-04-27 1994-11-04 Oji Yuka Synthetic Paper Co Ltd クーポン券付インモールド用ラベル
JPH09230791A (ja) * 1996-02-22 1997-09-05 Kao Corp 熱活性型ラベル及びラベル付き成形体の製造方法
JPH10315410A (ja) * 1997-05-16 1998-12-02 Toppan Printing Co Ltd ラベル、ラベルの製造方法およびラベル付きプラスチック容器
JP2000025068A (ja) * 1998-07-08 2000-01-25 Dainippon Printing Co Ltd インモ−ルドラベリング用ラベルおよびそれを使用したインモ−ルドラベル成形容器
US20010003626A1 (en) * 1999-12-03 2001-06-14 Yoshihisa Syoda Coated film
JP2001202020A (ja) * 2000-01-21 2001-07-27 Dainippon Printing Co Ltd 積層型剥離ラベル及びその製造方法
US20020050319A1 (en) * 2000-07-24 2002-05-02 Yupo Corporation Label for in-mold decorating and labeled resin molded article
JP2002316394A (ja) * 2001-04-19 2002-10-29 Mitsubishi Chem Mkv Co ポリオレフィン系樹脂製積層フィルム

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1768079A4 (fr) * 2004-05-21 2010-10-13 Yupo Corp Étiquette de moulage interne et pièce moulée en résine avec étiquette
US8097338B2 (en) 2004-05-21 2012-01-17 Yupo Corporation In-mold label, and labeled resin-labeled article
WO2018003803A1 (fr) * 2016-06-30 2018-01-04 株式会社ユポ・コーポレーション Étiquette dans un moule et moulage dans un moule

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