WO2018163795A1 - Papier couché - Google Patents

Papier couché Download PDF

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Publication number
WO2018163795A1
WO2018163795A1 PCT/JP2018/005848 JP2018005848W WO2018163795A1 WO 2018163795 A1 WO2018163795 A1 WO 2018163795A1 JP 2018005848 W JP2018005848 W JP 2018005848W WO 2018163795 A1 WO2018163795 A1 WO 2018163795A1
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Prior art keywords
paper
starch
coated paper
pigment
coated
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PCT/JP2018/005848
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English (en)
Japanese (ja)
Inventor
遼 外岡
詩織 柿木
吉松　丈博
俊宏 遠藤
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日本製紙株式会社
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Application filed by 日本製紙株式会社 filed Critical 日本製紙株式会社
Priority to JP2019504436A priority Critical patent/JPWO2018163795A1/ja
Publication of WO2018163795A1 publication Critical patent/WO2018163795A1/fr

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    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H19/00—Coated paper; Coating material
    • D21H19/36—Coatings with pigments
    • D21H19/44—Coatings with pigments characterised by the other ingredients, e.g. the binder or dispersing agent
    • D21H19/54—Starch

Definitions

  • the present invention relates to coated paper.
  • the present invention relates to a coated paper containing starch granules in a pigment coating layer.
  • the coated paper for printing is widely used in the commercial field for the purpose of advertising and promotion such as flyers, catalogs, pamphlets and direct mail. Particularly in recent years, both printing and processing have become more and more complex, and the demand for printing paper has become more severe in an environment such as on-demand printing and machine speedup.
  • Coated paper is used for various purposes such as books, posters, and wrapping paper. In any application, weight reduction is remarkable. Paper weight reduction is also demanded from the viewpoint of cost reduction such as material cost, warehouse storage cost, transportation cost, etc., and also from the aspect of ensuring the ease of transportation of consumers against recent lightweight media such as e-books and smartphones. Quality. In the world of coated paper for printing, in order to satisfy both the need for weight reduction and the high-class feeling of paper, there is an expectation for a bulky technology that reduces the weight while maintaining the paper thickness.
  • Patent Document 1 describes that a paper is made bulky by adding a nonionic surfactant.
  • Patent Document 2 discloses a coating liquid containing 10 to 50 parts by weight of starch per 100 parts by weight of pigment on a bulky base paper (density: 0.70 g / cm 3 or less) containing mechanical pulp. It has been proposed to produce a bulky printing paper by coating by a transfer method.
  • Patent Document 3 discloses a bulky printing coating by applying a coating layer containing a pigment having a large particle diameter to a low-density base paper (density: 0.50 to 0.75 g / cm 3 or less). It has been proposed to produce paper.
  • the technique of blending a surfactant described in Patent Document 1 to reduce the density of a base paper has a problem that the strength of the base paper, especially the interlayer strength of the base paper, is reduced. Further, in the technology for reducing the density of the base paper by blending the mechanical pulp according to Patent Document 2, the stiffness of the base paper is increased, and the cushioning property of the paper at the time of printing is lowered, and the printability may be lowered. Furthermore, as in Patent Document 3, when a pigment having a large particle size is used in the pigment coating layer, the pigment having a large particle size is easily removed from the coating layer, and the pigment particles have no cushioning property. There were problems such as insufficient strength and deterioration of the printing surface.
  • Japanese Patent Application Laid-Open No. 2007-303048 proposes further applying special starch particles processed with silicone on the pigment coating layer in order to reduce ink rubbing of the matte coated paper for printing.
  • a surface layer containing coarse starch particles is further coated on the pigment coating layer, the starch particles are exposed on the coated paper surface, and defects (holes) are formed on the coated paper surface due to the dropping of the starch particles. ) May be possible.
  • an object of the present invention is to provide a bulky coated paper excellent in printability.
  • this invention includes the following aspect.
  • a coated paper for printing having a pigment coating layer containing starch granules and a white pigment and a base paper.
  • the stained starch particles having a diameter of 2 to 50 ⁇ m
  • the coated paper according to any one of (1) to (5), wherein the number is 1 to 300 pieces / 1 mm 2 .
  • bulky coated coated paper can be produced by adding uncooked starch granules to the pigment coated layer.
  • FIG. 1 is a graph showing the particle size distribution of starch particles used in the examples.
  • FIG. 2 is a photograph when the number of starch particles on the surface of the coated paper according to Sample 1-5 was measured.
  • FIG. 3 is a graph showing the particle size distribution of starch particles on the surface of the coated paper according to Sample 1-5.
  • FIG. 4 is a photograph of a cross section containing starch particles observed with an electron microscope for the coated paper according to Sample 1-5.
  • starch granules are used for the pigment coating layer.
  • starch is applied to a base paper or a coating layer using starch, which has been subjected to a steaming process in which heat is applied in the presence of water to gelatinize the starch granules, as a binder.
  • granular starch is used for pigment coating. Used for construction layers. Examples of granular starch include starch that has not been cooked and starch that has been shaped into granules after cooking. ADVANTAGE OF THE INVENTION According to this invention, while being able to reduce the density of the coating layer of the coating paper for printing, the printability of coated paper can be improved.
  • the coated paper of the present invention is not particularly limited as long as the pigment coated layer containing a white pigment is provided on the base paper, and printing used for offset printing, gravure printing, letterpress printing, inkjet printing, and the like.
  • white paperboard having a pigment coating layer on the paperboard base paper may be used.
  • the coated paper of the present invention has one or more pigment coating layers on the base paper, but may have two or more pigment coating layers.
  • the number of pigment coating layers is not particularly limited, but it is preferably 3 layers or less in consideration of weight reduction of paper.
  • the coated paper of the present invention may have a pigment coating layer only on one side of the base paper, or may have a pigment coating layer on both sides of the base paper. In addition, it is not necessary to apply the coating liquid (size press liquid) which does not contain a pigment on the base paper.
  • the coating amount of the coated paper in the present invention can be appropriately selected depending on the application, but in general, the solid content per side is 2 to 20 g / m 2 , and may be 4 to 19 g / m 2 . It may be 6 to 18 g / m 2 or 8 to 17 g / m 2 .
  • the pigment (white pigment) used in the coating layer of the present invention is not particularly limited, and those conventionally used for coated paper can be used, for example, kaolin, clay, engineered kaolin, delaminator.
  • Ted clay heavy calcium carbonate, light calcium carbonate, talc, titanium dioxide, barium sulfate, calcium sulfate, zinc oxide, silicic acid, silicate, colloidal silica, satin white and other inorganic pigments and solid, hollow or core shell
  • Organic pigments such as molds can be used alone or in admixture of two or more as required.
  • kaolin or clay from the viewpoint of reducing paper smoothness and ink rubbing, the amount of binder required is small, surface strength can be improved with a small amount of adhesive, and high whiteness.
  • heavy calcium carbonate and light calcium carbonate are preferable, and from the viewpoint of improving opacity, light calcium carbonate having a uniform particle diameter and shape is particularly preferable. This is because the bulky coating layer structure scatters light efficiently.
  • the content of light calcium carbonate, heavy calcium carbonate, or both is preferably 50 parts by mass or more per 100 parts by mass of pigment, more preferably 70 parts by mass or more, and 80 More preferred is part by mass or more.
  • the average particle diameter of the coating pigment is 0.2 to 5 ⁇ m as measured by a laser diffraction particle size distribution measuring machine. Preferably, 0.2 to 3 ⁇ m is more preferable.
  • any commonly used coater may be used.
  • An on-machine coater or an off-machine coater may be used, and if it is an on-machine coater, a roll coater such as a size press coater, a gate roll coater, a rod metering size press coater, a bill blade coater, a blade metering size press coater, a short dwell blade
  • a coater such as a coater or a jet fountain blade coater can be used.
  • the coating speed is not particularly limited, but is preferably, for example, 150 to 2000 m / min, and more preferably 400 to 1500 m / min. With current technology, 150 to 1800 m / min for blade coaters and 150 to 2000 m / min for size press coaters are preferred.
  • the method for drying the wet coating layer is not limited, and various methods such as a steam superheated cylinder, a heated hot air air dryer, a gas heater dryer, an electric heater dryer, and an infrared heater dryer may be used alone or in combination. it can.
  • granular starch is used for the pigment coating layer.
  • starch when starch is cooked, the grains collapse, but in the present invention, uncooked granular starch (starch granules) or starch granules formed into granules after cooking is used.
  • Starch refers to a mixture composed of amylose and amylopectin, and generally the mixing ratio varies depending on the plant that is the raw material of starch.
  • various processed starches and dextrins can be suitably used.
  • the average particle diameter of the starch granules is preferably 8 to 25 ⁇ m, more preferably 10 to 20 ⁇ m, in terms of median diameter (d50) measured by a laser diffraction particle size distribution analyzer such as Mastersizer S manufactured by Malvern. More preferably, it is 12 to 17 ⁇ m.
  • the median diameter is a diameter in which the large side and the small side are equal when the powder is divided into two from a certain particle diameter. In the present invention, the median diameter based on volume is used. Can do.
  • the particle diameter distribution range can be measured by, for example, laser diffraction, and preferably 90% of the starch particles are distributed to 50 ⁇ m or less, more preferably 2 to 50 ⁇ m, and even more preferably. Is distributed in the range of 5 to 30 ⁇ m, and most preferably in the range of 5 to 25 ⁇ m.
  • the starch of the present invention is not particularly limited as long as it is a granular starch granule, and the modification method, raw material varieties, and the like are also free.
  • modified starch, modified starch, and the like include oxidized starch, hydroxyesterified starch (HES), phosphate starch, esterified starch, and dextrin.
  • HES hydroxyesterified starch
  • phosphate starch esterified starch
  • dextrin dextrin
  • corn, a potato, tapioca etc. can be mentioned as a preferable raw material of the starch used by this invention.
  • the compounding amount of the starch granules in the present invention is 0.5 to 10% with respect to the total of the white pigment and the starch granules constituting one layer of the pigment coating layer, and more preferably 8% or less. It may be 5% or less.
  • the starch granules of the present invention may be contained in any layer, but in order to exert the effects of the present invention greatly, the outermost pigment coating farthest from the base paper is used. It is preferable to make it contain in a construction layer. When starch particles are contained in the outermost coating layer, it is possible to greatly reduce the problem of ink rubbing that occurs when the coated papers immediately after printing are overlaid. Even when contained in a layer other than the outermost pigment coating layer, a bulky coated paper can be obtained.
  • Adhesive in the present invention, an adhesive conventionally used for coated paper can be used.
  • the adhesive used for the pigment coating layer include various copolymers such as styrene / butadiene, styrene / acryl, ethylene / vinyl acetate, butadiene / methyl methacrylate, vinyl acetate / butyl acrylate, and polyvinyl alcohol.
  • Synthetic adhesives such as maleic anhydride copolymer and acrylic acid / methyl methacrylate copolymer; proteins such as casein, soy protein, synthetic protein; oxidized starch, positive starch, urea phosphated starch, hydroxy Examples include etherified starch such as ethyl etherified starch and starches such as dextrin; cellulose derivatives such as carboxymethyl cellulose, hydroxyethyl cellulose, and hydroxymethyl cellulose.
  • One or more types of adhesives can be appropriately selected and used. In the present invention, it is preferable to use a starch polymer compound and latex as an adhesive. Combined use provides both the advantages of starch compounds and latex.
  • the content of the adhesive in the pigment coating layer is preferably 5 parts by weight or more and 20 parts by weight or less with respect to 100 parts by weight of the pigment.
  • the content thereof is preferably 1 part by mass or more and 15 parts by mass or less, and more preferably 1 part by mass or more and 10 parts by mass or less with respect to 100 parts by mass of the pigment. Even when blended in an amount of more than 15 parts by mass, the printing surface strength is excellent, but the cost is high and further effects cannot be expected.
  • 1 to 15 weight part is preferable, More preferably, it is 1 to 10 weight part.
  • the innermost pigment coating layer close to the base paper preferably has a higher latex content than the starch polymer, and the outermost pigment coating layer farthest from the base paper.
  • the layer preferably has more starch-based polymer than latex.
  • the method for preparing the coating liquid is not particularly limited and can be appropriately adjusted depending on the type of coater.
  • the solid content concentration of the coating liquid is preferably 40 to 75% by weight, more preferably 50 to 72% by weight, and may be 60 to 69% by weight.
  • the viscosity of the coating solution is preferably 300 to 2000 mPa ⁇ s, more preferably 500 to 1500 mPa ⁇ s, when measured with a JIS K 71117-1 B-type viscometer.
  • various assistants to be blended in ordinary coated paper pigments such as dispersants, thickeners, water retention agents, antifoaming agents, water resistance agents, colorants, fluorescent whitening agents, etc. Agents can be used as appropriate.
  • the coated paper of the present invention has a base paper layer.
  • a base paper can be manufactured by a well-known method, for example, a paper-making raw material (paper material) can be made in a wire part, and then it can be used for a press part and a pre-dryer part to manufacture a base paper.
  • the base paper used in the present invention may be single-layer paper or multi-layer paper, but when producing white paperboard, it is preferable to use multi-layer paper.
  • the method for producing the base paper of the present invention is not particularly limited, and can be performed by a known method using known raw materials.
  • the base paper used in the present invention is not particularly limited, and generally used high-quality paper, medium-quality paper, paperboard, reprinted paper, machine-coated paper, art paper, cast-coated paper, synthetic paper, resin-coated paper, plastic film, etc. Can be used without exception.
  • chemical pulp can be used as the pulp raw material used for the base paper of the present invention.
  • chemical pulp hardwood bleached kraft pulp (LBKP) and softwood bleached kraft pulp (NBKP) can be suitably used.
  • various pulps can be used depending on the application, for example, deinked pulp (DIP), groundwood pulp (GP), refiner groundwood pulp (RGP), thermomechanical pulp (TMP), chemithermo. Examples include mechanical pulp (CTMP), chemi-ground pulp (CGP), and semi-chemical pulp (SCP).
  • CMP mechanical pulp
  • CGP chemi-ground pulp
  • SCP semi-chemical pulp
  • the deinked pulp it is possible to use deinked pulp made from selected waste paper such as high quality paper, medium quality paper, lower grade paper, newspaper, flyers, magazines, etc., or unselected waste paper mixed with these.
  • known fillers can be arbitrarily used as fillers for base paper, such as heavy calcium carbonate, light calcium carbonate, clay, silica, light calcium carbonate-silica composite, kaolin, calcined kaolin, deramikaolin, white Amorphous produced by neutralization of carbon, talc, magnesium carbonate, barium carbonate, barium sulfate, aluminum hydroxide, calcium hydroxide, magnesium hydroxide, zinc hydroxide, zinc oxide, titanium oxide, sodium silicate Inorganic fillers such as silica and organic fillers such as urea-formalin resin, melamine resin, polystyrene resin, phenol resin can be used alone or in combination.
  • base paper such as heavy calcium carbonate, light calcium carbonate, clay, silica, light calcium carbonate-silica composite, kaolin, calcined kaolin, deramikaolin, white Amorphous produced by neutralization of carbon, talc, magnesium carbonate, barium carbonate, barium sulfate, aluminum hydroxide
  • heavy calcium carbonate and light calcium carbonate which are typical fillers for neutral papermaking and alkaline papermaking, are preferably used to improve opacity.
  • the filler content in the paper is not particularly limited, but is preferably 1 to 40 solids by mass, more preferably 5 to 35 solids by mass, and even more preferably 10 to 30 solids by mass.
  • a known paper additive can be used.
  • sulfuric acid bands and various anionic, cationic, nonionic or amphoteric yield improvers, drainage improvers, various paper strength enhancers and internal additive sizing agents, etc. Can be used.
  • the dry paper strength improver include polyacrylamide and cationized starch
  • examples of the wet paper strength improver include polyamidoamine epichlorohydrin.
  • a bulking agent may be added to the base paper. These chemicals are added within a range that does not affect the formation and operability.
  • neutral sizing agents include alkyl ketene dimers, alkenyl succinic anhydrides, and neutral rosin sizing agents.
  • dyes, fluorescent brighteners, pH adjusters, antifoaming agents, pitch control agents, slime control agents and the like can be added as necessary.
  • the paper making method of the base paper in the present invention is not particularly limited, and a long paper machine including a top wire, an on-top former, a gap former, a round paper machine, a long paper machine and a round paper machine are used in combination. Paper board machine, Yankee dryer machine, etc., and may be single-layer or multi-layer.
  • the pH during papermaking may be acidic, neutral or alkaline, but neutral or alkaline is preferred.
  • the paper making speed is not particularly limited.
  • the basis weight of the base paper of the present invention is not particularly limited and can be appropriately selected depending on the application.
  • the basis weight of the base paper may be 25 to 160 g / m 2 , 35 to 150 g / m 2 , or 45 to 140 g / m 2 for general printing coated paper. If so, it may be 200 g / m 2 or more.
  • the base paper used for the coated paper of the present invention may have a clear (transparent) coating layer on one side or both sides.
  • a clear (transparent) coating layer By applying clear coating on the base paper, the surface strength and smoothness of the base paper can be improved, and the coating property when applying pigment can be improved.
  • the aforementioned adhesive can be used as a binder in the clear coating layer.
  • the amount of the clear coating is preferably 0.1 ⁇ 4.0g / m 2 by solid per side content, more preferably 0.5 ⁇ 2.5g / m 2.
  • clear coating means, for example, various starches such as starch and oxidized starch using a coater (coating machine) such as a size press, a gate roll coater, a pre-metering size press, a curtain coater, and a spray coater.
  • a coating liquid surface treatment liquid mainly composed of a water-soluble polymer such as polyacrylamide or polyvinyl alcohol is applied (size press) on a base paper.
  • the treatment linear pressure is preferably 30 to 100 kN / m, more preferably 50 to 100 kN / m.
  • the moisture content of the base paper during the precalender treatment is also important, and the moisture content is preferably 3 to 5%.
  • the coated paper produced as described above may be surface-treated as necessary, but it is difficult to obtain the bulky effect of the present invention, and therefore it is preferable not to perform calendar treatment.
  • a smoothing processing apparatus such as a normal super calendar, gloss calendar, soft calendar, thermal calendar, shoe calendar, or the like can be used.
  • the smoothing apparatus is appropriately used on-machine or off-machine, and the form of the pressure apparatus, the number of pressure nips, heating, and the like are appropriately adjusted, but calendering at low pressure is preferable.
  • the coated paper of the present invention can correspond to various printing methods, such as coated paper for offset printing, coated paper for letterpress printing, coated paper for gravure printing, inkjet paper, dry electrophotographic paper, wet electronic paper. Can be used for photographic paper.
  • the coated paper according to the present invention uses starch particles in the pigment coating layer. However, if the coarse starch particles are exposed too much on the coated paper surface, the starch particles may fall off. It becomes easy. Based on the JAPAN TAPPI paper pulp test method No.
  • the number of stained starch particles having a diameter of 2 to 50 ⁇ m is 1 to 300 pieces / 1 mm 2 is preferable, 2 to 200 pieces / 1 mm 2 is more preferable, 3 to 150 pieces / 1 mm 2 is further preferable, 4 to 100 pieces / 1 mm 2 is further more preferable, and 5 to 50 pieces / 1 mm 2 are more preferable. It may be 2 .
  • Evaluation method (1) Paper quality / basis weight: Measured according to JIS P 8124. -Paper thickness / density: Measured according to JIS P 8118. Ash content: Measured according to ISO 1762-1974.
  • Average particle size and particle size distribution of starch particles The average particle size (d50) and particle size distribution of starch particles were measured by laser diffraction. Specifically, starch particles were analyzed using Mastersizer S manufactured by Malvern.
  • FIG. 1 shows the particle size distribution of starch particles measured using Mastersizer S (laser diffraction particle size distribution measuring machine) manufactured by Malvern.
  • Experiment 1 Production of coated paper (two-layer coating) On base paper having a basis weight of 75 g / m 2, the pigment coating layer dry coating amount per side is 6.5 g / m 2 (under layer), dry coating amount per one side 10.5 g / A coated paper for printing provided with a pigment coating layer (top layer: outermost coating layer) of m 2 was produced (samples 1-1 to 1-7, basis weight: about 109 g / m 2 ).
  • Base paper A high quality paper having a basis weight of 98 g / m 2 and a density of 0.73 g / cm 3 was used as a base paper.
  • the pulp blend was 100% chemical pulp (LBKP 100% by weight) and contained 13% by weight light calcium carbonate as a filler.
  • an under pigment coating solution is coated on both sides with a blade coater at a coating speed of 650 m / min so that the dry coating amount per side is 6.5 g / m 2, and then dried and undercoated.
  • a construction layer was provided on the base paper.
  • top coating As coating pigment, heavy calcium carbonate slurry and starch particles (Y-3P manufactured by Nippon Corn Starch Co., Ltd., uncooked) were used in the amounts shown in the table below, and styrene was used as an adhesive for 100 parts by weight (solid content) of pigment. -Blending 4 parts by weight of butadiene copolymer latex (PB9501 manufactured by A & L) and 6 parts by weight of steamed oxidized starch (SK200 manufactured by Nippon Corn Starch Co., Ltd.) and adding water to top coating with a solid content concentration of 66% by weight A pigment coating solution was obtained.
  • PB9501 manufactured by A & L butadiene copolymer latex
  • SK200 steamed oxidized starch
  • the top coating pigment coating solution is coated on both sides with a blade coater so that the dry coating amount per side is 10.5 g / m 2, and then dried for printing. Wrought paper was obtained (Samples 1-1 to 1-6).
  • Sample 1-7 was produced as a coated paper in which starch particles were blended in the under layer.
  • the coating used for the under coating was the same as Sample 1-6, except that 90 parts by weight of heavy calcium carbonate and 10 parts by weight of starch particles (Y-3P manufactured by Nippon Cornstarch, uncooked) were used.
  • Y-3P manufactured by Nippon Cornstarch, uncooked were used.
  • sample was used except that the heavy calcium carbonate used for the under layer and the top layer was replaced with light calcium carbonate, and starch particles (Y-3P, uncooked by Nippon Corn Starch Co., Ltd.) were used for the under layer with the composition shown in the table below.
  • starch particles Y-3P, uncooked by Nippon Corn Starch Co., Ltd.
  • the pigment 53.5 parts by weight of heavy calcium carbonate slurry (solid content), 45 parts by weight of kaolin (solid content), 1.5 parts by weight of uncooked starch particles, and 100 parts by weight of the pigment, the adhesive
  • 4 parts by weight of styrene / butadiene copolymer latex (PB9501 manufactured by A & L) and 6 parts by weight of steamed oxidized starch (SK200 manufactured by Nippon Corn Starch Co., Ltd.) were added, and water was added to give a pigment with a solid content concentration of 66% by weight. A working solution was obtained.
  • this pigment coating solution was coated on both sides with a blade coater so that the dry coating amount per side was 15.0 g / m 2, and then dried to obtain a coated paper for printing. (Sample 2-1).
  • a coated paper for printing was obtained in the same manner as in Sample 2-1, except that uncooked starch particles were not blended and the amount of heavy calcium carbonate was changed to 55 parts by weight (Sample 2-2: Comparative Example). .
  • a coated paper for printing was produced in the same manner as Sample 2-1 and Sample 2-2 except that heavy calcium carbonate was replaced with light calcium carbonate (Samples 2-3 to 2-4).
  • low-density coated coated paper could be obtained by adding uncooked starch granules to the pigment coated layer. Since the specific gravity of starch particles is smaller than that of inorganic pigments, the density of the pigment coating layer is reduced by blending the starch particles, and when the starch particles are blended in the outermost coating layer, the paper thickness is increased by the starch particles. Therefore, it is thought that the density of the coated paper is reduced as a whole.
  • the coated paper for printing of the present invention had little ink rubbing after printing and was excellent in coating suitability.
  • the unevenness of the coated paper surface increases due to the starch particles present near the surface of the coated paper, the contact area between the superimposed coated papers decreases, and the ink rub is reduced due to the cushioning properties of the starch particles. Conceivable.
  • FIG. 2 shows a surface photograph when the surface of the coated paper according to Sample 1-5 is analyzed, and 11 starch granules having a diameter of 2 to 50 ⁇ m per 1.5 mm ⁇ 2.1 mm (per 1 mm 2 It was about 3.5). Further, as apparent from the cross-sectional photograph shown in FIG. 4, the coated paper according to the present invention does not expose the starch particles excessively by printing the starch particles in the pigment coating layer. In addition, it was a pigment coating layer in which starch particles hardly fall off.

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Abstract

La présente invention aborde le problème de disposer d'un papier couché à bouffant élevé ayant une excellente aptitude à l'impression. En incorporant des grains d'amidon dans une couche de couchage sur la base de l'invention, il est possible de produire un papier d'impression couché à bouffant élevé ayant une excellente aptitude à l'impression.
PCT/JP2018/005848 2017-03-06 2018-02-20 Papier couché WO2018163795A1 (fr)

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JP2019504436A JPWO2018163795A1 (ja) 2017-03-06 2018-02-20 塗工紙

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JP2017-041800 2017-03-06
JP2017041800 2017-03-06

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WO2018163795A1 true WO2018163795A1 (fr) 2018-09-13

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PCT/JP2018/005848 WO2018163795A1 (fr) 2017-03-06 2018-02-20 Papier couché

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Families Citing this family (1)

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Publication number Priority date Publication date Assignee Title
CN110565437A (zh) * 2019-07-22 2019-12-13 深圳市万极科技股份有限公司 表涂涂料及其制备方法、水转印纸及其制备方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH059894A (ja) * 1991-07-08 1993-01-19 Honshu Paper Co Ltd 高平滑マツト調塗工紙
JPH0559692A (ja) * 1991-08-09 1993-03-09 Honshu Paper Co Ltd 多層塗工紙
JPH07505927A (ja) * 1992-04-25 1995-06-29 シユトーラ　フエルトミユーレ　アクチエンゲゼルシヤフト 印刷支持体
JPH08127996A (ja) * 1994-10-28 1996-05-21 New Oji Paper Co Ltd 印刷用艶消し塗被紙
WO2015041276A1 (fr) * 2013-09-19 2015-03-26 日本製紙株式会社 Carton blanc et son procédé de production

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH059894A (ja) * 1991-07-08 1993-01-19 Honshu Paper Co Ltd 高平滑マツト調塗工紙
JPH0559692A (ja) * 1991-08-09 1993-03-09 Honshu Paper Co Ltd 多層塗工紙
JPH07505927A (ja) * 1992-04-25 1995-06-29 シユトーラ　フエルトミユーレ　アクチエンゲゼルシヤフト 印刷支持体
JPH08127996A (ja) * 1994-10-28 1996-05-21 New Oji Paper Co Ltd 印刷用艶消し塗被紙
WO2015041276A1 (fr) * 2013-09-19 2015-03-26 日本製紙株式会社 Carton blanc et son procédé de production

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