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WO2024247170A1 - Film pour encres à base de latex - Google Patents

Film pour encres à base de latex Download PDF

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Publication number
WO2024247170A1
WO2024247170A1 PCT/JP2023/020305 JP2023020305W WO2024247170A1 WO 2024247170 A1 WO2024247170 A1 WO 2024247170A1 JP 2023020305 W JP2023020305 W JP 2023020305W WO 2024247170 A1 WO2024247170 A1 WO 2024247170A1
Authority
WO
WIPO (PCT)
Prior art keywords
latex ink
film
latex
receiving layer
ink
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
PCT/JP2023/020305
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English (en)
Japanese (ja)
Inventor
鉄也 荒添
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Lintec Corp
Original Assignee
Lintec Corp
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 Lintec Corp filed Critical Lintec Corp
Priority to PCT/JP2023/020305 priority Critical patent/WO2024247170A1/fr
Publication of WO2024247170A1 publication Critical patent/WO2024247170A1/fr
Anticipated expiration legal-status Critical
Pending legal-status Critical Current

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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
    • B32B27/16—Layered products comprising a layer of synthetic resin specially treated, e.g. irradiated
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein

Definitions

  • the present invention relates to a film for latex inks.
  • latex inks are water-based inks in which a pigment is dispersed in water together with latex (polymer). Therefore, there is no emission of volatile organic compounds (VOCs) resulting from organic solvents, which is a problem when using solvent inks, and therefore printed materials using latex inks have the advantage that they can be used safely in a variety of locations, such as restaurants, educational institutions, medical institutions, and commercial facilities.
  • VOCs volatile organic compounds
  • the film for latex ink described in Patent Document 2 comprises a substrate and a printing coating layer to which latex ink is applied.
  • the printing coating layer contains a material having a structure in which a polymeric material having vinyl chloride, vinyl acetate, and a crosslinkable monomer as constituent monomers is crosslinked by a crosslinking agent. This results in a film for latex ink having a printing coating layer with excellent adhesion to both the portion printed with latex ink and the substrate.
  • the “printing coating layer” in Patent Document 2 is referred to as the "latex ink receiving layer” in this specification.
  • the “latex ink receiving layer” refers to the layer to which latex ink is applied and has the function of fixing the printed portion made of the applied latex ink.
  • the present invention makes it possible to provide a film for latex inks that is formed from an active energy ray-curable compound and has a latex ink-receiving layer that has excellent adhesion to both the substrate and the ink.
  • FIG. 1 is a schematic cross-sectional view showing one embodiment of a film for latex ink of the present invention.
  • the present inventors found that by forming a latex ink-receiving layer from a composition in which a polymer dispersant having one or more functional groups selected from the group consisting of acidic functional groups and basic functional groups is blended with an active energy ray-curable compound, it is possible to dramatically improve ink adhesion while ensuring good substrate adhesion similar to that of a latex ink-receiving layer formed only from an active energy ray-curable compound, thereby achieving both substrate adhesion and ink adhesion. Based on the above findings, the present inventors conducted further studies and completed the present invention.
  • the "active energy ray-curable compound (A)” will also be referred to as “component (A).”
  • the "polymer dispersant (B) having one or more functional groups selected from the group consisting of acidic functional groups and basic functional groups” will also be referred to simply as the “polymer dispersant (B)” or “component (B).”
  • the film for latex ink of the present invention has a laminated structure in which a latex ink-receiving layer (X) and a substrate (Y) are laminated together.
  • FIG. 1 A cross-sectional schematic diagram of one embodiment of the film for latex ink of the present invention is shown in Figure 1.
  • the film for latex ink 1 shown in Figure 1 has a laminated structure in which a latex ink-receiving layer (X) is laminated on one surface (Ya) of a substrate (Y).
  • the film for latex ink according to one embodiment of the present invention preferably has a pressure-sensitive adhesive layer (Z) provided on the other surface (Yb) of the substrate (Y), which allows the film for latex ink to be suitably used as a pressure-sensitive adhesive film.
  • the adhesive surface of the pressure-sensitive adhesive layer (Z) may be covered with a release liner. Then, when attaching to an adherend, the release liner may be peeled off to expose the adhesive surface of the pressure-sensitive adhesive layer (Z).
  • a latex ink receiving layer (X) may be provided on both sides (Ya) and (Yb) of the substrate (Y) without providing a pressure-sensitive adhesive layer (Z).
  • another layer may be provided between the latex ink receiving layer (X) and the substrate (Y). Examples of the other layer include an easy-adhesion layer.
  • the latex ink receiving layer (X) is formed from a composition (x1) containing an active energy ray-curable compound (A) and a polymer dispersant (B).
  • a composition (x1) containing an active energy ray-curable compound (A) and a polymer dispersant (B) By forming the latex ink-receiving layer (X) from the composition (x1) containing the active energy ray-curable compound (A) and the polymer dispersant (B), the latex ink-receiving layer (X) can have excellent adhesion to the substrate and ink.
  • the composition (x1) which is the material for forming the latex ink receiving layer (X) may be composed of only the component (A) and the component (B), but may contain other components other than the components (A) and (B) in addition to the components (A) and (B) as long as the effect of the present invention is not impaired.
  • the other components include a polymerization initiator (C), and when the component (A) is an ultraviolet-curable compound, a photopolymerization initiator (C1) is preferably used.
  • additives for ink receiving layers that are generally used in ink receiving layers such as latex ink receiving layers, such as reaction accelerators (catalysts), surface conditioners, plasticizers, fillers, and colorants, may be used.
  • the total content of component (A) and component (B) is preferably more than 50% by mass, more preferably 55% by mass or more, even more preferably 60% by mass or more, still more preferably 70% by mass or more, even more preferably 80% by mass or more, and even more preferably 90% by mass or more, based on the total amount of the active ingredients in composition (x1).
  • Latex ink contains a liquid dispersion medium and a dispersoid composed of at least a material containing a resin, which is dispersed (emulsified and/or suspended) in the dispersion medium.
  • Latex inks have a low environmental impact.
  • latex inks have the advantage of being able to express deep colors with a thin layer.
  • the latex particles that make up latex inks contain a binder (resin), which is generally advantageous in terms of improving the adhesion of pigment colorants to recording media.
  • latex inks have the advantage of being able to be printed on demand because they can be produced using the inkjet method.
  • the latex ink is preferably a water-based ink, since water-based inks suppress the generation of volatile organic substances resulting from organic solvents, and therefore are safer and have a smaller impact on the environment.
  • the latex ink used in the film for latex ink of one embodiment of the present invention is preferably a latex ink containing an acrylic resin, from the viewpoint of further improving the adhesion between the latex ink-receiving layer (X) and the printed portion.
  • the content of the resin in the latex ink is preferably 1% by mass to 20% by mass, and more preferably 2% by mass to 10% by mass, based on the total amount of the latex ink.
  • Latex ink contains water as a dispersion medium.
  • the content of the dispersion medium (water) in the latex ink is preferably 50% by mass to 98% by mass, more preferably 60% by mass to 97% by mass, and even more preferably 70% by mass to 96% by mass, based on the total amount of the latex ink.
  • Latex inks typically contain a colorant.
  • a colorant various dyes, various pigments, etc. can be used.
  • the content of the colorant in the latex ink is preferably 0.1% by mass to 20% by mass, and more preferably 0.2% by mass to 10% by mass, based on the total amount of the latex ink.
  • the latex ink may contain components other than those described above (other components).
  • examples of such components include dispersants, antifungals, antirust agents, pH adjusters, surfactants, plasticizers, ultraviolet absorbers, and light stabilizers.
  • the printed portion using latex ink is formed by applying latex ink onto the latex ink receiving layer (X) of the film for latex ink.
  • the latex ink is preferably a latex ink containing an acrylic resin, from the viewpoint of further improving the adhesion between the latex ink receiving layer (X) and the printed portion.
  • the method for applying the latex ink is not particularly limited, and various printing methods can be used, but the inkjet method is preferred. Examples of the inkjet method include the piezo method and the thermal jet method.
  • the film for latex ink may be heated. The heating temperature is not particularly limited, but is preferably 40° C. to 90° C.
  • Beamset AQ-19 is a multifunctional urethane acrylate prepolymer, which undergoes radical polymerization and three-dimensional curing when irradiated with electron beams or ultraviolet rays.
  • Polymer Dispersant (B) The following polymer dispersants (B)-1 to (B)-9 were used.
  • the acid values and amine values of the following polymer dispersants (B)-1 to (B)-9 are shown in Table 1.
  • the acid values and amine values shown are all catalog values.
  • the photopolymerization initiator (C) was ⁇ -hydroxyacetophenone.
  • a polyethylene terephthalate sheet (thickness: 50 ⁇ m) with an easy-adhesion layer was prepared.
  • the active energy ray curable compound (A), the dispersant (B), and the polymerization initiator (C) were mixed in the amounts shown in Table 1 (the amounts are calculated as active ingredients, and Comparative Example 1 does not include the dispersant (B)), and diluted with a dilution solvent (a mixture of water and isopropanol at a ratio of 1:2 (by mass)) to a solid content (active ingredient) concentration of 10 mass % to prepare a composition (x1).
  • a dilution solvent a mixture of water and isopropanol at a ratio of 1:2 (by mass)
  • the obtained composition (x1) was applied to a substrate (Y) so that the thickness after drying was 1.8 ⁇ m or 3.6 ⁇ m.
  • the solvent contained in the composition (x1) applied to the substrate (Y) was removed by heating at 70° C. for 1 minute using a hot air dryer, and then the composition was cured by irradiating it with ultraviolet light having a peak wavelength of 365 nm at an integrated light intensity of 400 mJ/cm 2.
  • a latex ink-receiving layer (X) having a thickness of 1.8 ⁇ m or 3.6 ⁇ m was formed, and a film for latex ink was obtained.
  • the latex ink receiving layer (X) provided in the ink jet printing sheets of Examples 1 to 15 is excellent in both substrate adhesion and ink adhesion.
  • the latex ink receiving layer (X) of the ink jet printing sheet of Comparative Example 1 is excellent in adhesion to the substrate but is poor in adhesion to the ink.

Landscapes

  • Laminated Bodies (AREA)

Abstract

La présente invention aborde le problème de la fourniture d'un film pour encres à base de latex qui comprend une couche de réception d'encre à base de latex formée à partir d'un composé durcissable par rayonnement actinique et ayant une excellente adhérence au substrat et une excellente adhérence d'encre sur celui-ci. Le problème est résolu avec un film ayant une structure stratifiée comprenant une couche de réception d'encre à base de latex (X) et un substrat (Y) stratifiés l'un sur l'autre, la couche de réception d'encre à base de latex (X) étant formée à partir d'une composition (x1) comprenant un composé durcissable par rayonnement actinique (A) et un dispersant spécifique (B).
PCT/JP2023/020305 2023-05-31 2023-05-31 Film pour encres à base de latex Pending WO2024247170A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/JP2023/020305 WO2024247170A1 (fr) 2023-05-31 2023-05-31 Film pour encres à base de latex

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2023/020305 WO2024247170A1 (fr) 2023-05-31 2023-05-31 Film pour encres à base de latex

Publications (1)

Publication Number Publication Date
WO2024247170A1 true WO2024247170A1 (fr) 2024-12-05

Family

ID=93657022

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2023/020305 Pending WO2024247170A1 (fr) 2023-05-31 2023-05-31 Film pour encres à base de latex

Country Status (1)

Country Link
WO (1) WO2024247170A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004025481A (ja) * 2002-06-21 2004-01-29 Konica Minolta Holdings Inc インクジェット記録用シート及び光情報記録媒体
JP2014094992A (ja) * 2012-11-07 2014-05-22 Mimaki Engineering Co Ltd 転写印刷用インク及び転写印刷方法
WO2017169844A1 (fr) * 2016-03-31 2017-10-05 富士フイルム株式会社 Feuille translucide et verre décoratif

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004025481A (ja) * 2002-06-21 2004-01-29 Konica Minolta Holdings Inc インクジェット記録用シート及び光情報記録媒体
JP2014094992A (ja) * 2012-11-07 2014-05-22 Mimaki Engineering Co Ltd 転写印刷用インク及び転写印刷方法
WO2017169844A1 (fr) * 2016-03-31 2017-10-05 富士フイルム株式会社 Feuille translucide et verre décoratif

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