WO2019069736A1 - Encre flexographique à base d'eau durcissable par faisceau d'électrons pour impression de surface, et sachet stérilisable en autoclave l'utilisant - Google Patents

Encre flexographique à base d'eau durcissable par faisceau d'électrons pour impression de surface, et sachet stérilisable en autoclave l'utilisant Download PDF

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Publication number
WO2019069736A1
WO2019069736A1 PCT/JP2018/035303 JP2018035303W WO2019069736A1 WO 2019069736 A1 WO2019069736 A1 WO 2019069736A1 JP 2018035303 W JP2018035303 W JP 2018035303W WO 2019069736 A1 WO2019069736 A1 WO 2019069736A1
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WIPO (PCT)
Prior art keywords
electron beam
water
ink
printing
surface printing
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Application number
PCT/JP2018/035303
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English (en)
Japanese (ja)
Inventor
勉 春山
栄樹 伊藤
伸生 猿渡
歳徳 石橋
Original Assignee
Ｄｉｃグラフィックス株式会社
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
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Application filed by Ｄｉｃグラフィックス株式会社 filed Critical Ｄｉｃグラフィックス株式会社
Priority to AU2018344119A priority Critical patent/AU2018344119B9/en
Priority to CN201880061759.7A priority patent/CN111108159B/zh
Priority to JP2019524478A priority patent/JP6557799B1/ja
Publication of WO2019069736A1 publication Critical patent/WO2019069736A1/fr

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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
    • 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
    • B65D33/00—Details of, or accessories for, sacks or bags
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D11/00—Inks
    • C09D11/02—Printing inks
    • C09D11/10—Printing inks based on artificial resins
    • C09D11/101—Inks specially adapted for printing processes involving curing by wave energy or particle radiation, e.g. with UV-curing following the printing
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D11/00—Inks
    • C09D11/02—Printing inks
    • C09D11/10—Printing inks based on artificial resins
    • C09D11/102—Printing inks based on artificial resins containing macromolecular compounds obtained by reactions other than those only involving unsaturated carbon-to-carbon bonds

Definitions

  • the present invention relates to a water-based flexographic ink for surface printing that can be used for water-based flexographic printing equipped with an electron beam-curable device, and a pouch for boiling and retorting using the same.
  • Aqueous flexographic printing is widely used for the purpose of imparting cosmetic properties and functionality to a substrate.
  • Food pouches such as gas replacement pouches for snack packaging, pouches for boiling, pouches for heating, retort pouches for heating and pressing, due to recent changes in lifestyles such as the increase in the number of double-income households and the number of single-person households
  • consumption of pouches for boiled and retorted foods is increasing year by year.
  • Examples of boiled / retort pouches include packaging materials for food and drink such as curry, hamburger, pasta sauce, soup, bowls, etc.
  • the boiled pouch is, for example, 30 minutes to 60 minutes at a temperature of about 90 ° C. to 98 ° C.
  • the heat treatment is performed for about a minute, and the retort pouch is subjected to a heat and pressure treatment for about 20 to about 60 minutes, for example, at a temperature of about 110 ° C. to about 130 ° C. under pressurized conditions. Therefore, the ink used in the boil / retort pouch is also required to be able to withstand the above-mentioned heat and pressure test and to have durability such as abrasion resistance so as not to lose a print during transportation and storage.
  • packaging materials using water-based inks and solventless adhesives have been proposed, but sufficient adhesion strength is obtained with water-based inks and solventless adhesives using hydrophilic materials. It has not been possible to replace the conventional solvent-based ink / solvent-based adhesive composition. Furthermore, regardless of the combination of water-based or solvent-based ink, solvent-based or non-solvent-based adhesive, it is necessary to carry out lamination after back printing from the viewpoint of ink durability such as abrasion resistance, etc. Since the aging process can not be completed, it is not possible to shift to the processing and filling process immediately after printing. Therefore, there is a limit to shortening the delivery time in the conventional voile / retort packaging material using reverse printing.
  • the problem to be solved by the present invention is that the amount of VOC (Volatile Organic Compounds) in the ink is 0% as much as possible, and the electron beam curing is excellent in the abrasion resistance and the boiling / retortability on the outer surface of the pouch container. It is an object of the present invention to provide a surface-printed pouch for a boil / retort using an aqueous flexographic ink for surface printing.
  • VOC Volatile Organic Compounds
  • the present invention can solve the above-mentioned problems even in aqueous flexo printing by using an electron beam (EB) curable aqueous ink excellent in water resistance, heat resistance, abrasion resistance, etc. for surface printing of a boil / retort pouch.
  • EB electron beam
  • Electron beam (EB) curable aqueous ink forms a strong film by EB irradiation, so that it is possible to carry out the filling and processing steps immediately after the printing step, and it is possible to shorten the delivery time of the boil and retort packaging material I assume.
  • the present invention is an aqueous flexo ink for electron beam-curable surface printing comprising an aqueous resin (X), an electron beam polymerizable compound (Y) having an ethylenic double bond, a pigment and water.
  • the present invention relates to a water-based flexographic ink for electron beam curing surface printing.
  • the present invention is also directed to an electron beam-curable surface printing method, wherein the electron beam polymerizable compound (Y) having an ethylenic double bond is a water soluble (meth) acrylic monomer and / or a water soluble (meth) acrylic oligomer.
  • the electron beam polymerizable compound (Y) having an ethylenic double bond is a water soluble (meth) acrylic monomer and / or a water soluble (meth) acrylic oligomer.
  • the present invention also relates to an aqueous flexographic ink for electron beam curing surface printing, wherein the electron beam polymerizable compound (Y) having an ethylenic double bond is polyethylene glycol di (meth) acrylate.
  • the present invention also relates to a water-based flexographic ink for electron beam-curable surface printing, wherein the water-based resin (X) is a non-reactive water-based urethane resin.
  • the energy intensity of the electron beam is 30,000 to 300,000 eV, and the irradiation dose is 5 to 100 kGy ⁇ m / min.
  • the present invention relates to a water-based flexographic ink for electron beam curable surface printing, which is (kilo gray).
  • the present invention also relates to a printed matter obtained by printing on a plastic film using the aqueous flexographic ink for electron beam curing surface printing and the flexographic printing machine.
  • the present invention relates to a laminate obtained by laminating the obtained printed matter and a substrate through a laminating adhesive, and in particular, a pouch for boiling, a retort pouch, etc. for which heat resistance and water resistance are required. Can be suitably used.
  • the water-based flexographic ink for electron beam-curable surface printing of the present invention has a VOC content of 0% in the ink, and when used for printing the outer surface of a retort pouch container, its boil resistance such as abrasion resistance, water resistance and heat resistance -A pouch for boil retort excellent in retort suitability can be obtained.
  • the electron beam-curable surface printing aqueous flexo ink of the present invention comprises an aqueous resin (X), an electron beam polymerizable compound (Y) having an ethylenic double bond, a pigment, and water.
  • the most well-known layer structure is, for example, a composite film in which an aluminum foil is bonded to a polypropylene film as a base material using an adhesive and the aluminum foil is further bonded to a polyethylene terephthalate (sometimes referred to as PET hereinafter) film. is there.
  • PET film / ink layer for solvent type reverse printing / adhesive layer (needs aging) / aluminum foil or aluminum deposited film layer / adhesive layer / polypropylene base film
  • PET film / ink layer for solvent type reverse printing is referred to as the upper layer
  • aluminum foil or aluminum deposited film layer / adhesive layer / polypropylene substrate film is referred to as the lower layer.
  • the lower layer that is, "aluminum foil or aluminum-deposited film layer / adhesive layer / polypropylene base film” is integrated, and may be used.
  • the lower layer polypropylene base film is not limited to this, and other olefin films may be used.
  • the general processing procedure is as follows: after back printing with a solvent type reverse printing ink, an adhesive is applied and laminated with other required films, and if necessary, subjected to aging to produce a composite film, A retort pouch package made of the composite film is obtained. The contents are subjected to a filling process to form a retort pouch package.
  • the water-based flexographic ink for electron beam curing surface printing of the present invention is, from the top layer, electron beam curing water ink layer / PET film layer / adhesive layer / aluminum foil or aluminum deposited film layer / adhesive layer / polypropylene group It is a water-based flexographic ink for surface printing which can be used in a layer construction composed of a material film in order. This is because the electron beam curable aqueous ink is printed on the PET surface of the laminated film on which "PET film layer / adhesive layer / aluminum foil or aluminum deposited film layer / adhesive layer / polypropylene base film" is already laminated. It is possible.
  • the printing and laminating steps involve the emission of VOCs in the drying step.
  • the binder of the ink used is a water-based resin, and sufficient adhesive strength can not be obtained.
  • the types of ink and adhesive in the case of the packaging material by back printing / lamination processing, since an aging step is essential, delivery time is required and productivity is poor.
  • an electron beam (EB) -curable surface printing aqueous ink excellent in water resistance, heat resistance, and abrasion resistance is used on the surface of the laminated film prepared in advance and on which all layers other than the printing layer are laminated. Since the printing can be performed, the process from printing to bag-making and filling can be significantly shortened as compared with the manufacturing process of the packaging material having the laminating process after the conventional reverse printing and printing. In addition to shortening of delivery time and inventory reduction by shortening of such process time, significant cost reduction by layer reduction and volume reduction can be expected. Furthermore, since flexographic printing can perform high-speed printing, higher productivity can be realized.
  • an electron beam (EB) curable overprint varnish layer is further coated by a roll coater or the like on the front printing layer provided with the aqueous flexo ink for electron beam curing front printing of the present invention, and an electron beam (EB) ) Hardening can further improve abrasion resistance, surface gloss and the like.
  • the aqueous flexographic ink for electron beam-curable surface printing of the present invention is intended for surface printing on the outer surface of a retort pouch container, and has the abrasion resistance, water resistance, heat resistance, etc. required as boiling and retort suitability.
  • the aqueous resin (X) is essential from the viewpoint of providing both.
  • Water-soluble or dispersion-type (emulsion and dispersion) resins of various binder resins such as aqueous styrene-acrylic-maleic acid resins, aqueous polyurethane resins and aqueous polyester resins can be exemplified as preferable examples.
  • water-based aliphatic polyurethane dispersions or those obtained by dispersing urethane resin beads or beads in a water-based solvent also referred to as dispersion, and also including urethane resin dispersions, aliphatic polyurethane dispersions, etc.
  • a water-based solvent also referred to as dispersion, and also including urethane resin dispersions, aliphatic polyurethane dispersions, etc.
  • an aqueous polyurethane resin is preferable from the viewpoint of adhesion to a substrate, long run printability and the like.
  • a non-reactive water-based urethane resin is preferable.
  • aqueous resin (X) water-based urethane resin which has a (meth) acryloyl group.
  • aqueous resin (X) A commercially available product may be used as the aqueous resin (X). In that case, it is available as a dispersion or emulsion of aqueous resin.
  • an electron beam polymerizable compound (Y) having an ethylenic double bond is essential.
  • electron beam polymerizable compounds having an ethylenic double bond known electron beam curable monomers and oligomers can be used, but from the viewpoint of solubility in water, water soluble (meth) acrylic monomers, water soluble (Meth) acrylic oligomers are preferred.
  • water-soluble (meth) acrylate examples include hydroxyethyl (meth) acrylate, hydroxypropyl (meth) acrylate, hydroxybutyl (meth) acrylate, polyethylene glycol (meth) acrylate, methoxy polyethylene glycol (meth) acrylate, N- (2-hydroxyethyl) acrylamide (abbreviation: HEAA), N- (2-hydroxyethyl) methacrylamide, N- (2-hydroxymethyl) acrylamide, N- (2-hydroxymethyl) methacrylamide, acryloyl morpholine, methylol acrylamide , Dimethyl acrylamide, methoxy methyl acrylamide, diethyl acrylamide, isopropyl acrylamide, polyethylene glycol di (meth) acrylate, etc. But it is, not to be limited to these.
  • water-soluble (meth) acrylic oligomers CN549, CN131, CN131B, CN2285, CN3100, CN3105, CN132, CN132, CN132, CN132 (Sartomer), Ebecryl 140, Ebecryl 1140, Ebecryl 40, Ebecryl 3200, Ebecryl 3201, Ebecryl 3212 ( Cytec Industries), PHOTOMER 3660, PHOTOMER 5006F, PHOTOMER 5429, PHOTOMER 5429F (Cognis), LAROMER PO 33F, LAROMER PO 43F, LAROMER PO 94F, LAROMER UO 35D, LAROMER PA 9039V, LAROMER PO 9026V, LAROME 8996, LAROMER 8765, LAROMER 8986 (BASF), and the like.
  • the water soluble (meth) acrylic monomer and the water soluble (meth) acrylic oligomer may be used alone or in combination. Among them, polyethylene
  • the aqueous resin is effective for imparting flexibility to the ink film after electron beam irradiation and improving adhesion to the substrate, but when the ratio of the aqueous resin portion increases, the double bond concentration in the ink coating film And there is a tendency to increase concerns such as poor curing, poor friction resistance, poor heat resistance, poor water resistance and the like.
  • the aqueous resin (X) is a commercial product, it is mostly in the form of a dispersion or emulsion of the aqueous resin, but in this case the dispersion of the aqueous resin or the dry solid content of the emulsion is employed. Do.
  • Examples of the pigment used in the water-based flexographic ink for electron beam-curable surface printing of the present invention include organic and inorganic pigments and dyes used in general inks, paints, recording agents and the like.
  • organic pigment examples include azo pigments, phthalocyanine pigments, anthraquinone pigments, perylene pigments, perinone pigments, quinacridone pigments, thioindigo pigments, dioxazine pigments, isoindolinone pigments, quinophthalone pigments, azomethine azo pigments, dictopyrrolopyrrole pigments, isoindoline pigments, etc. Pigments are listed.
  • the inorganic pigment examples include carbon black, titanium oxide, zinc oxide, zinc sulfide, barium sulfate, calcium carbonate, chromium oxide, silica, bengara, aluminum, mica (mica) and the like. Further, it is possible to use a bright pigment (Metashine; Nippon Sheet Glass Co., Ltd.) in which a metal flake or a metal oxide is coated on a glass flake or a massive flake as a base material. It is preferable to use titanium oxide for white ink, carbon black for black ink, aluminum for gold and silver ink, and mica for pearl ink from the viewpoint of cost and coloring power.
  • Aluminum is in the form of powder or paste, but is preferably used in the form of paste in terms of handleability and safety, and whether leafing or non-leafing is used is appropriately selected in terms of brightness and density.
  • the total amount of the pigments is preferably contained in an amount sufficient to secure the density and coloring strength of the ink, that is, in a proportion of 1 to 50% by mass with respect to the total weight of the ink.
  • a coloring agent can be used individually or in combination of 2 or more types.
  • the water-based flexographic ink for electron beam curing front printing of the present invention may further contain a solvent and other auxiliary agents according to the purpose.
  • a solvent water alone or an organic solvent miscible with water can be used.
  • the organic solvent include alcohols such as methyl alcohol, ethyl alcohol, isopropyl alcohol and n-propyl alcohol, and polyhydric alcohols such as propylene glycol and glycerin, propylene glycol monomethyl ether, propylene glycol monoethyl ether, propylene glycol mono n -Ethers such as propyl ether and ethyl carbitol.
  • various waxes such as paraffin wax, polyethylene wax, PTFE wax, carnauba wax, oleic acid amide, stearic acid amide, etc. for imparting abrasion resistance, slip resistance, etc.
  • Fatty acid amides such as erucic acid amide and various dispersants for improving the wetting of silicone based, non-silicon based antifoaming agents and pigments for suppressing foaming during printing, wetting agents for improving the wettability to a substrate, etc. Can be used as appropriate.
  • the aqueous flexo ink for electron beam-curable surface printing according to the present invention is produced using an Eiger mill, a sand mill, a gamma mill, an attritor, etc. which are generally used for the production of gravure and flexographic printing inks.
  • the aqueous flexo ink for electron beam curing surface printing of the present invention has a viscosity of 5 to 35 seconds at 25 ° C. when using Zan cup # 5 manufactured by Rigosha Co., Ltd., more preferably 8 to 20 seconds It is.
  • the viscosity in millipascal seconds may be in the range of 100 to 1000 (mPa ⁇ s) at 25 ° C., and more preferably in the range of 180 to 600 (mPa ⁇ s).
  • the surface tension at 25 ° C. of the aqueous flexographic ink for electron beam-curable surface printing of the present invention is preferably 25 to 50 mN / m, and more preferably 33 to 43 mN / m.
  • the aqueous flexographic ink for electron beam curing surface printing of the present invention is excellent in adhesion to various film substrates, and can be used for printing on thermoplastic resin films and plastic products.
  • the base film polyamide resins such as nylon (Ny) 6, nylon 66, nylon 46, etc., polyester resins such as PET, polyethylene naphthalate, polytrimethylene terephthalate, polytrimethylene naphthalate, polybutylene terephthalate, polybutylene naphthalate, etc.
  • Biodegradable resin represented by aliphatic polyester resin such as polyhydroxycarboxylic acid such as polylactic acid, polyhydroxycarboxylic acid such as polylactic acid, poly (ethylene succinate), poly (butylene succinate), polyolefin such as polypropylene (PP), polyethylene Films made of thermoplastic resins such as resins, polyimide resins, polyarylate resins or mixtures thereof, and laminates thereof can be mentioned, among which films made of polyester, polyamide, polyethylene, polypropylene Preferably it can be used. These base films may be unstretched films or stretched films, and the production method is not limited. Also, the thickness of the base film is not particularly limited, but usually, it may be in the range of 1 to 500 ⁇ m. Moreover, it is preferable that the corona discharge process is carried out to the printing surface of a base film. In addition, silica, alumina or the like may be vapor deposited.
  • the aqueous flexographic ink for electron beam curing surface printing of the present invention is a layer composed of at least the electron beam curing aqueous ink layer / film layer / adhesive layer / aluminum foil / adhesive layer / substrate film from the upper layer
  • the surface printing only aqueous flexographic ink which can be used in the construction, and the two layers of the upper layer, “electron beam curable aqueous ink layer / film layer” correspond to a surface printing printed matter by film printing. Further, by providing an "electron beam curable aqueous OP varnish layer" on the upper layer of the "electron beam curable aqueous ink layer", the abrasion resistance and the gloss of the printed matter surface can be improved.
  • As the lower layer aluminum / adhesive layer / substrate film a substrate film previously deposited with aluminum or a high functional film having a multilayer structure may be used.
  • the aqueous flexo ink for electron beam curing surface printing of the present invention is an electron beam in which electrons are artificially accelerated by an accelerator to cure the ink film on the surface of a printed matter printed on a plastic film using a flexo printing machine.
  • a wire also called Electron Bearm EB.
  • the printed ink layer is formed as it is as an ink film, and in the case of an EB curable composition which does not contain a photopolymerization initiator unlike UV curing, the properties of the designed composition are directly reflected in the properties of the ink film.
  • the ink film completely polymerized by EB curing is characterized by no odor or low odor since it contains almost no low molecular components such as a photopolymerization initiator. Further, in the case of the EB curing process, since the influence of the heat given to the irradiated object is small, distortion, wrinkles, deformation and the like due to the heat to the thin film hardly occur. Further, EB curing enables high-speed processing at a line speed of 10 to 400 meters per minute or more, and UV curing does not provide the same effect while suppressing heat generation.
  • the energy intensity of the electron beam to be used is 30,000 to 300,000 eV, and the irradiation dose is 5 to 100 kGy ⁇ m / min. It is preferable that it is (kilogray).
  • the varnish is drawn by a roll coater or the like after printing in order to provide an "electron beam curable aqueous OP varnish layer" on the upper layer of the "electron beam curable aqueous ink layer", the ink layer and the OP varnish layer are Electron beam curing can be performed simultaneously with the wire.
  • a flexo ink according to the composition of Table 1 is prepared as an aqueous flexo ink for electron beam curing surface printing comprising an aqueous resin (X), an electron beam polymerizable compound (Y) having an ethylenic double bond, a pigment, and water. did.
  • Ink 1 a pigment dispersion base manufactured by DIC (WFJ R507 primary color base, containing 40% by mass of phthalocyanine pigment based on the dispersion base), non-reactive urethane dispersion, and aliphatic epoxy acrylate, (BASF Lamarar LR8765)
  • DIC WFJ R507 primary color base, containing 40% by mass of phthalocyanine pigment based on the dispersion base
  • non-reactive urethane dispersion aliphatic epoxy acrylate
  • Aqueous resin Non-reactive urethane dispersion (39 mass% non-volatile matter)
  • Electron beam polymerizable compound (Y) having ethylenic double bond Urethane acrylate (Water-based UV-curable resin manufactured by Daicel 35% solid content)
  • Aliphatic epoxy acrylate BASF Lamarar LR 8765
  • Polyethylene glycol diacrylate pigment ⁇ base (consisting of 40 mass% of WFJ R507 primary color ⁇ base phthalocyanine pigment manufactured by DIC based on the dispersion base)
  • Black base includes 40% by mass of DIC WFJ R805 black base black base carbon black with respect to the dispersion base)
  • Print method A laminated film for boiling and retort wrapping material was prepared in the order of "corona-treated polyethylene terephthalate (PET) film / adhesive layer / aluminum foil / adhesive layer / polypropylene base film" from the upper layer previously laminated.
  • the inks 1 to 5 obtained by the above-mentioned production method were surface-printed and printed on a CI 6-color flexographic printing machine (SOLOFLEX, manufactured by Windmoeller & Hoelscher).
  • SOLOFLEX CI 6-color flexographic printing machine
  • WFJ M1000 varnish EB curable OP varnish
  • Electron beam irradiation Immediately after printing, using an EB apparatus, the energy intensity is 80,000 eV and the irradiation dose is 60 kGy ⁇ m / min. Electron beam irradiation was performed at (kilo gray). In addition, since the irradiation dose differs depending on the pigment used for the ink, in curing of the inks 1, 2, 4, and 5 using ⁇ -based (WF J R507 primary color ⁇ -based manufactured by DIC), the anilox line number (line / cm) And a cell volume (cm 3 ) of 4.5.
  • Table 2 shows the anilox line number (line / cm) and cell volume (cm 3 ) in the case of using a black base (WF-R 805 black base manufactured by DIC) and in the case of an OP varnish containing no pigment. Show.
  • the printed laminated film for boiling and retort packaging material is referred to as "printed laminated film”.
  • Inks used in Examples 1 to 5 and Comparative Example 1 in Table 3, presence or absence of EB curable OP varnish layer, water content in ink, amount of non-reactive (non-electron beam curable) resin, electron beam polymerizable compound The amount, the non-reactive resin ratio to the amount of electron beam polymerizable compound 100, the amount of VOC in the ink, and the evaluation result of the printed laminated film are described.
  • the numerical values in Table 3 indicate "parts" on a mass basis.
  • the water-based flexographic ink for electron beam curing front printing of the present invention does not need to consider the amount of VOC (%) in the ink and does not require an aging time after printing.
  • the ink is excellent in abrasion resistance and boil / retort suitability.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mechanical Engineering (AREA)
  • Inks, Pencil-Leads, Or Crayons (AREA)
  • Laminated Bodies (AREA)
  • Bag Frames (AREA)
  • Packages (AREA)
  • Wrappers (AREA)

Abstract

La présente invention aborde le problème de l'obtention d'un sachet stérilisable en autoclave qui est imprimé en surface à l'aide d'une encre flexographique à base d'eau durcissable par faisceau d'électrons destinée à l'impression de surface, sur l'extérieur du contenant formant sachet, la quantité de COV dans l'encre étant de pratiquement 0 % et l'encre présentant une excellente résistance à l'abrasion et une excellente aptitude à la stérilisation en autoclave. À cet effet, l'encre flexographique à base d'eau durcissable par faisceau d'électrons destinée à l'impression de surface contient une résine à base d'eau (X), un composé durcissable par faisceau d'électrons à double liaison éthylénique (Y), un pigment, et de l'eau, et est caractérisée en ce que le rapport massique entre la fraction de solides de la résine à base d'eau (X) et la fraction de solides du composé durcissable par faisceau d'électrons à double liaison éthylénique (Y) s'inscrit dans la plage de (X)/(Y) = 5/100 à 400/100.
PCT/JP2018/035303 2017-10-02 2018-09-25 Encre flexographique à base d'eau durcissable par faisceau d'électrons pour impression de surface, et sachet stérilisable en autoclave l'utilisant WO2019069736A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
AU2018344119A AU2018344119B9 (en) 2017-10-02 2018-09-25 Electron beam-curable water-based flexo ink for surface printing and boilable/retort pouch using same
CN201880061759.7A CN111108159B (zh) 2017-10-02 2018-09-25 电子射线固化型表面印刷用水性柔版墨液和使用其的煮沸/蒸煮用小袋
JP2019524478A JP6557799B1 (ja) 2017-10-02 2018-09-25 電子線硬化型表刷り用水性フレキソインキ、及びそれを用いたボイル・レトルト用パウチ

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JP2017192646 2017-10-02
JP2017-192646 2017-10-02

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WO2019069736A1 true WO2019069736A1 (fr) 2019-04-11

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JP (1) JP6557799B1 (fr)
CN (1) CN111108159B (fr)
AU (1) AU2018344119B9 (fr)
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022209932A1 (fr) * 2021-03-30 2022-10-06 Ｄｉｃグラフィックス株式会社 Stratifié ayant une couche d'impression d'encre liquide à base d'eau
WO2023054026A1 (fr) 2021-09-30 2023-04-06 東レ株式会社 Procédé de fabrication d'imprimés

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WO2023054026A1 (fr) 2021-09-30 2023-04-06 東レ株式会社 Procédé de fabrication d'imprimés

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