CN1497100A - Coated paper - Google Patents
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- CN1497100A CN1497100A CNA2003101025188A CN200310102518A CN1497100A CN 1497100 A CN1497100 A CN 1497100A CN A2003101025188 A CNA2003101025188 A CN A2003101025188A CN 200310102518 A CN200310102518 A CN 200310102518A CN 1497100 A CN1497100 A CN 1497100A
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Abstract
Provided is a coated sheet having an excellent traveling performance as paper in a printing machine, when used in sheet-fed offset printing, and capable of giving high-quality images, without causing offset nor blocking on the back surface thereof after printed. This coated sheet has a sheet-shaped base material and is formed by applying a coating layer consisting mainly of a pigment and an adhesive to at least one surface of the base material, wherein the surface of the coating layer has convexities having a height of 0.5-10.0[mu]m in a number of 10-1,000counts/mm<SP>2</SP>, and the coating layer contains a lubricant in an amount of 0.1-5.0mass%.
Description
Technical field
The present invention relates to a kind of coated paper, its back side that is caused by printing-ink is stain (back side lettering) property and is improved and paper walking property excellence, and printing operation is good.
Background technology
As the lithographic printing that is used for a kind of form of commercial printing, its difference according to used paper form is divided into cycle type and single page type.Cycle type uses coil paper to print continuously, printing-ink drying operation and being batched, or be cut into desirable size and store.On the other hand, in single page type, paper is supplied with page by page, the no ink setting operation in printing back, therefore the hanging togother storage of printing is easy to generate because the overlapping conveying that the adhesion of paper causes is easy to generate printing-ink contamination back side of paper at storage part owing to not dry printing ink contacts with printed back at the paper supply unit, because not dry printing ink makes printing surface and printed back adhesion, produce sticking page or leaf phenomenon when serious.In order to address this problem, in single page type, at the paper supply unit, thereby in the adhesion between blowing inhibition paper between paper, perhaps at storage part, before storage, use printing use powder, it interspersed among between paper, thus prevent to print back printing ink back side of paper stain or the generation of sticking page or leaf phenomenon (reference example such as reference example such as the lithography technique committee of compiling compile the distribution of " lithography technique " Japanese printing technology association, clear and on June 20th, 59 first edition print for the 6th time, 55 pages, 73 pages).
For the overlapping conveying of supplying with simultaneously at the multipage paper of paper supply unit generation, method with blowing can make it be improved, but when very strong adhesion is arranged between paper, even blowing also can't thoroughly solve, again, using the roller that does not have to dry to carry out in the mode of paper sheet delivery, when coefficient of friction is high, overlap bad conveyings such as conveying or crooked supply paper.On the other hand, when coefficient of friction is extremely low, because print direction is not exclusively identical, for still not ideal enough in the countermeasure of paper walking property such as the overlapping conveying of paper supply unit or bad conveying.
On the other hand, the printing powder between the paper that storage part uses, it has and prevents that printing ink from staiing overleaf or the effect of sticking page or leaf, but because it remains on the printing surface, therefore when back up or append when printing, this powder can hinder printing sometimes.
Again; usually the adhesive efficiency of powder on printing surface do not reach 100%; adhesion section disperse in air (distribution of " lithography technique " Japanese printing technology association, clear and the 6th printing of first edition on June 20th, 59,55 pages, 73 pages are compiled by the reference example such as the lithography technique committee of compiling) not; in order to prevent that operating environment from worsening or protection machinery, therefore preferred powder scatters seldom.Therefore, wish to improve into a kind of coated paper for printing that does not have the offset back side of paper always.
As the improvement method in the coated paper, it comprises the method (reference example such as spy open 2000-226794 communique (2 pages)) of using specific adhesive and specific higher fatty acids based compound in order to improve paper walking property, even but this method, for high glaze, high level and smooth coated paper, the improvement of paper walking property is also insufficient, can't expect that its back side contamination for printing ink has the effect of improvement.Again, proposed to use the thick pigment of specified particle diameter to wipe dirt to improve, it is the printing ink of printing is transferred to non-printing owing to friction the method (reference example such as spy open flat 11-131392 communique (2 pages)) of phenomenon, use this method when improving the wiping dirt, stain at the back side that also can improve printing ink, but do not obtain confirming for the effect of improving of paper walking property.Like this, reality is to stain and the equal coated paper for printing of excellence of paper walking property, printing operation as the back side of printing-ink, does not still have the example that can meet the demands.
Summary of the invention
The present invention is a purpose to address the above problem, and a kind of paper walking property excellence in printing machine is provided, and in the printing of lithographic plate single page, the back side of paper is difficult for producing back side contamination or the sticking page or leaf that printing ink causes after printing, obtains the coated paper of high-grade image thus.
Inventors of the present invention are in order to reach above-mentioned purpose, superficiality and printing operation to coating layer, contamination that printing ink causes at the paper back side or sticking page or leaf have carried out research with keen determination, found that: it is in the coated paper of coat of principal component that flat substrates is provided with pigment and adhesive, resembling on the flat substrates that has been coated with specific spherical particle coating is principal component and the coating fluid that contains the specified quantitative lubricant with pigment and adhesive, the resulting coated paper of drying, or the lubricant that adds specific spherical particle and specified quantitative in the coating fluid that with pigment and adhesive is principal component is coated with, dry resulting coated paper is such, be provided with the coated paper that has specific convex shaped part and contain the coat of specified quantitative lubricant by flat substrates, the acceptance excellence of printing-ink, stain or sticking page or leaf at the excellent and back side that be difficult for producing at the back side of paper printing ink of paper walking property in the printing of lithographic plate single page, operability is good, thereby has finished the present invention.
Promptly, a kind of coated paper of the present invention comprises: flat substrates and what be provided with on the one side at least of this base material is the coat of principal component with pigment and adhesive, the last every square millimeter of convex shaped part that to have 10～1000 height be 0.5～10.0 μ m in wherein above-mentioned coat surface and contain the lubricant of 0.1～5.0 quality % in above-mentioned coat.
The average grain diameter of above-mentioned lubricant is preferably 0.005～1.0 μ m, preferably contains the spherical particle that average grain diameter is 3.0～50.0 μ m in above-mentioned coat.Again, preferred above-mentioned flat substrates contains the spherical particle that average grain diameter is 3.0～50.0 μ m at its surface portion at least.
The blank sheet of paper glossiness on above-mentioned coat surface is preferably 45～80%.
Again, the confficient of static friction of preferred above-mentioned coat surface mensuration under ISO environment (23 ℃ of temperature, relative humidity 50%) is 0.2～0.7.
The specific embodiment
Inventors of the present invention are stain for the back side of walking that improves lithographic printing paper when (or claiming hectographic printing) and printing ink and have been carried out research with keen determination repeatedly, consequently: in order when supplying with paper, the adhesion between paper to be reduced, stain at the back side that prevents printing ink, the contact area of paper and printing ink is reduced, again, in order to keep excellent sheet walking property, should consider to have the coat surface of suitable coefficient of friction, last every square millimeter to have 10～1000 height be the convex shaped part of 0.5～10.0 μ m and the lubricant that contains 0.1～5.0 quality % in coat by making coated paper surface, makes to have kept printing ink acceptance and the good coated paper of lithographic printing adaptability well.
In the present invention, must make the height of coat surface convex shaped part is 0.5～10.0 μ m.If the height deficiency of convex shaped part 0.5 μ m then prevents from the weak effect that adheres between paper from can't improve the walking of paper, and property is stain at the back side that can not improve printing ink sometimes.On the other hand, if surpass 10.0 μ m, then the improvement of the back side contamination property of paper walking property and printing ink is respond well, shifts well but hinder printing ink sometimes in printing machine, produces and shifts spot.The convex shaped part height is preferably 0.7～5.0 μ m.
Convex shaped part among so-called the present invention, its generation result from the coat surface for the coating weight difference of flat substrates or be present in the concavo-convex of flat substrates surface, and be different with the convex shaped part on so-called external waviness summit and so on.Promptly, convex shaped part among so-called the present invention, it is that the diameter r of convex shaped part and the height h of this convex shaped part satisfy 0.3≤r/h≤50.0, more preferably, satisfy the convex shaped part of 3.0≤r/h≤40.0, for example, be the corresponding convex shaped part of particle diameter of the oversize grain that produces with the specific spherical particle of the application of the invention defined.When using spherical particle, in drying process in the undried coat of above-mentioned spherical particle periphery, composition such as pigment and adhesive is owing to surface tension is heaved, thereby formation has the convex shaped part of the diameter bigger than spherical particle or forms convex shaped part at spherical particle top formation coat, so the diameter of convex shaped part is also big than above-mentioned spherical particle.Therefore, in using the present invention during the preferred spherical particle that uses, to be its diameter satisfy for the height of this convex shaped part the convex shaped part of formation: 0.3≤r/h≤50.0.
Spherical particle among the present invention is meant, no matter organic filler or inorganic particulate, the maximum gauge a of this particle and the ratio a/b of minimum diameter b satisfy 1≤a/b≤1.8, preferred satisfied 1≤a/b≤1.4, for example has the particle that concavo-convex shape, ovum type etc. satisfy above-mentioned ratio on the sphere of spherical shape, ball, and have concavo-convexly in its surface, satisfy the particle of above-mentioned ratio.
The particle diameter of employed spherical particle is 3.0～50.0 μ m among the present invention, because convex shaped part is with 10～1000/mm
2Scope be present on the coat, compare with about 0.1～1.0 μ m of average grain diameter of the kaolin that generally uses as the coated paper body pigment or heavy/precipitated calcium carbonate etc., the part of thick spherical particle becomes the lip-deep convex shaped part of coat and occurs, thereby or by on spherical particle, forming coat at coat surface formation convex shaped part, even still exist the convex shaped part that produces by spherical particle on the coat surface because the back is handled in the smoothing of carrying out where necessary, therefore this convex shaped part has hindered the adhesion between paper, has improved paper walking property.Again, under the situation of general coated paper for printing, when not dry printing ink is piled up on its coated paper for printing, because printing surface adheres to the back side of coated paper easily, therefore stain at the back side that is easy to generate printing ink, but for coated paper of the present invention, the contact area of the printing ink of drying regime reduces owing to be in not after the back side of this coated paper and the printing, can infer that therefore the back side contamination of printing ink is improved.
As the 10/mm of convex shaped part less than that is present in the coat surface
2The time, or in the coat during average grain diameter less than 3.0 μ m of spherical particle, can't obtain to prevent the effect that adheres between paper sometimes, not only paper walking property is poor, and the back side of printing ink is stain and improved effect and reduce.On the other hand, when the convex shaped part that is present in the coat surface than 1000/mm
2For a long time, or when the average grain diameter of spherical particle surpasses 50.0 μ m in the coat, the paper walking property and the printing ink back side are stain and are improved respond wellly, but hinder the good transfer of printing ink sometimes in printing machine, shift spot thereby produce.Stain the harmony of improving effect and printing effect from the back side of printing ink and consider that the size distribution preferable particle size is the size distribution of 5.0～30.0 μ m, again, the scope that is present in the convex shaped part on coated paper surface is preferably 200～600/mm
2
But, only has convex shaped part given to this invention on the coat surface, can not satisfy paper walking property, be difficult for preventing the pigment of the sliding difference in coat, used or the summit that adhesive ingredients sticks to convex shaped part, therefore the coefficient of friction between paper rises, the decline of paper walking property, or owing to contact the decline of paper walking property between the convex shaped part on coat surface.
Further study at this problem, it found that: by being used in combination the lubricant of the necessary important document of conduct in the present invention, can address this problem.
Promptly, by in coat, using the lubricant of 0.1～5.0 quality %, because this lubricant is distributed in the coat surface, even the sliding of above-mentioned convex shaped part is poor, owing to given suitable coefficient of friction, therefore can infer the coated paper that can make paper walking property excellence.If the average grain diameter of lubricant is 0.005～1.0 μ m, in the drying process of coat, lubricant is distributed to the coat surface effectively when moving owing to moisture, is preferred therefore.
If lubricant content surpasses 5.0 quality %, coat intensity difference sometimes, again, when lubricant content less than 0.1 quality %, coat surface lubricant abundance reduces, and the property of paper walking sometimes is poor, can not get desirable effect.Preferred use average grain diameter is the lubricant of 0.005～1.0 μ m.If the particle diameter of lubricant is discontented with 0.005 μ m, surface strength is poor sometimes, and on the other hand, when the average grain diameter of lubricant surpassed 1.0 μ m, the lubricant abundance on coat surface reduced, and the property of paper walking sometimes is poor.The use level of lubricant is preferably 0.3～3.0 quality %, and again, average grain diameter is preferably 0.01～0.5 μ m.
Among coated paper, the blank sheet of paper glossiness is being called as the high coated paper of blank sheet of paper gloss of gloss class coated paper more than 45%, generally with enforcement gloss processing such as supercalenders, in this treatment process, handle owing to carry out high smoothing simultaneously, so the improvement of the flatness on coat surface, or because the level and smooth flat substrates of height is provided with coat, even therefore do not implement the gloss processing, can demonstrate high blank sheet of paper gloss yet.Therefore since between the high level and smooth surface toward each other, therefore low with gloss, low level and smooth paper is compared, and is easy to generate the adhesion between paper, the back side of printing ink is stain more and is worsened during printing.In the present invention, the convex shaped part that is present in the coat surface only accounts for the whole a few percent in paper surface, even after giving its gloss by the smoothing processing, also can not damage the blank sheet of paper outward appearance of high glaze, and because existence highly is the convex shaped part of 0.5～10.0 μ m, therefore can prevent to adhere between paper, stain at the back side that hinders printing ink.Therefore, be that the gloss of 45～80% high glazes is in the coated paper having blank sheet of paper gloss, be easy to bring into play effect of the present invention.
Employed spherical particle can use inorganic particulate and organic filler together among the present invention.Inorganic particulate comprises glass particle, silica beads, spherical micropowder silica aggregate of precipitated calcium carbonate, magnesium carbonate, closely knit or hollow etc.
As the organic filler in the employed spherical particle among the present invention, can use compact-type, hollow type or connect pass, it comprises that polystyrene resin, styrene-propene acid copolymer are that resin, urea aldehyde are that resin, melamine resin, acrylic resin, vinylidene chloride resin, benzoguanamine are resin etc.From inorganic particulate and organic filler, suitably select to be used more than a kind or 2 kinds.
Employed lubricant comprises senior aliphatic acid such as stearic acid, oleic acid, linoleic acid, palmitic acid (acid of パ Le チ ミ Application), myristic acid, laurate, behenic acid, erucic acid among the present invention; Senior fatty acid metal salts such as zinc stearate, behenic acid zinc, calcium stearate, aluminum stearate, dolomol; Senior derivative of fatty acid such as senior fatty acid amide such as stearic amide, stearic acid diamides, ethene-distearyl acid acid amides, oleamide, erucyl amide, behenic acid acid amides and methylol compound thereof; Polyolefin-wax, fatty acid alcohol are ester, fatty glyceride, polyoxyalkylene derivative etc.
Flat substrates is not particularly limited, can use with cellulose fibre as the paper base material of main body, use polypropylene etc. and mixed fillers etc./or contain micro air bubble synthetic paper, make polyolefin film that the adhesiveness of coat improves etc. by the surface being carried out corona treatment.
Paper pulp during for the use paper base material is not particularly limited its method for making and kind etc., can use the chemical pulp of KP, SP and so on; Mechanical pulps such as SGP, RGP, BCTMP, CTMP; Not chloride paper pulp such as ECF paper pulp or TCF paper pulp; The old paper stock of de inked pulp and so on; Or non-wood pulp such as bluish dogbane, bagasse, bamboo, ligusticumic, fiber crops; Organic synthetic fibers such as polyamide fiber, polyester fiber, koplon also can use inorfils such as glass fibre, ceramic fibre, carbon fiber.
Can in paper base material, cooperate filler in case of necessity again.The filler of this moment is not particularly limited, comprise the various pigment that generally use in vellum, for example mineral pigment such as kaolin, roasting kaolin, calcium carbonate, calcium sulfate, barium sulfate, titanium dioxide, talcum, zinc oxide, aluminium dioxide, magnesium carbonate, magnesia, silica, white carbon, bentonite, zeolite, sericite, montmorillonite or polystyrene resin, urea aldehyde are that resin, melamine are the organic pigment of resin, acrylic resin, vinylidene chloride resin and their compact-type, small hollow type, perforation pass particle.
In paper stock except paper pulp fiber or filler are arranged, in the scope of the effect of not damaging the desired realization of the present invention, can suitably select to use in the past step of various anionic properties, nonionic, cationic or the both sexes used to stay in the various paper grade (stock)s such as improving agent, drainability improving agent, paper power reinforcing agent, adhesive or Internal Size in case of necessity and add auxiliary agent.Again, also can suitably add dyestuff, fluorescent whitening agent, pH according to the purposes of paper adjusts in the paper grade (stock)s such as agent, defoamer, resin obstruction controlling agent (pitch controller), the agent of sizing mixing and adds auxiliary agent.
Papermaking process for paper base material is not particularly limited, it is suitable near acid papermaking method 4.5 of papermaking pH for example, contains alkaline fillers such as neutral sizing agent and/or calcium carbonate as principal component, papermaking pH is about all papermaking process such as weakly alkaline neutral paper process of 9 from being about 6 faintly acid to papermaking pH, and paper machine also can suitably be selected fourdrinier machine, two-wire (paper) machine, cylinder mould machine, Yankee formula single cylinder paper machine, oblique normally used paper machine such as net paper machine for use.
As with the used coat of coated paper of the present invention in spherical particle together or the pigment that uses separately, can use for example powdered whiting, precipitated calcium carbonate, kaolin, roasting kaolin, constructivity kaolin, delaminated kaolins, talcum, calcium sulfate, barium sulfate, titanium dioxide, zinc oxide, aluminium oxide, magnesium carbonate, magnesia, silica, Almasilate, the finely particulate calcium silicates, finely particulate magnesium carbonate, the finely particulate precipitated calcium carbonate, white carbon, bentonite, zeolite, sericite, mineral pigment or polystyrene resins such as montmorillonite, the styrene-propene acid copolymer is a resin, urea aldehyde is resin, melamine is a resin, acrylic resin, the vinylidene chloride resin, benzoguanamine is compact-types such as resin, hollow type, connect organic pigments such as pass resin, can from these, suitably choose one or more and be used.
Adhesive can use water-soluble and/or the water dispersible macromolecular compound, and it comprises for example starch based such as cationic starch, amphoteric starch, oxidized starch, enzymically modified starch, heat chemistry modified starch, esterification starch, etherification starch; Cellulose derivative such as carboxymethyl cellulose, hydroxyethylcellulose; Natural or semi-synthetic macromolecular compounds such as gelatin, casein, soybean protein, natural rubber; Polyvinyl alcohol; Polydieness such as isoprene, chlorobutadiene, polybutadiene; TPO such as polybutene, polyisobutene, polypropylene, polyethylene; Ethylene-based polymer class or copolymer analogs such as vinyl halides, vinyl acetate, styrene, (methyl) acrylic acid, (methyl) acrylate, (methyl) acrylamide, methyl vinyl ether; Synthetic rubber latex such as styrene-butadiene system, methyl methacrylate-butadiene-based, polyurethane series resin, polyester based resin, polyamide-based resin, alkene-maleic anhydride series resin, melamine are synthetic macromolecular compounds such as resin etc.According to the difference of purpose, from these materials, suitably choose a kind or 2 kinds of uses.
For the pigment of 100 parts by mass (solid constituent), the cooperation ratio of adhesive is preferably in the scope of 5～50 parts by mass (solid constituent).If discontented 5 parts by mass, the weak strength that coat is filmed, coat is peeled off on the galley that is deposited in rotary press, becomes the reason of damage galley sometimes, significantly damages the commodity of printed article sometimes.On the other hand, if the cooperation ratio of adhesive surpasses 50 parts by mass, then coat densification, ink adhesion significantly reduces sometimes.
Under the situation of the effect of not damaging the desired realization of the present invention, can suitably use various auxiliary agents except that above-mentioned pigment and adhesive being used for coating fluid of the present invention in case of necessity, for example surfactant, pH regulator agent, viscosity modifier, softener, gloss give agent, paraffin class, dispersant, flow ability modifying agent, conduction and prevent agent, stabilizing agent, antistatic additive, crosslinking agent, sizing agent, fluorescent whitening agent, colouring agent, ultra-violet absorber, defoamer, anti-hydrated agent, plasticizer, preservative agent, spices etc.
The dried coating weight of coat of the present invention must be 3～20g/m for the single face of flat substrates
2, preferred 8～15g/m
2If the not enough 3g/m of coating weight
2, because coat can not be fully with the surface coverage of flat substrates, the acceptance of printing-ink significantly descends sometimes.On the other hand, if it surpasses 20g/m
2, operability during coating descends, and as the drying property variation etc., spherical particle is buried in coat and is not formed convex shaped part, can't obtain desirable effect.
But, when coat is set to multilayer more than 2 layers, the lubricant that can have desirable convex shaped part and specified quantitative on the coat surface of the superiors, for example after being provided with inexpensive primary coat coating, be provided with form the convex shaped part contain lubricant given to this invention on during coat, can make them more, even for example coating weight is 40g/m than above-mentioned coating weight
2, also can obtain desirable effect.Again, when coating contains the coating fluid of particular lubricants given to this invention on the flat substrates that has been coated with spherical particle in advance, can be coated with single or multiple lift to form convex shaped part given to this invention, or, also can obtain desirable effect on the flat substrates or the coat that contains specific spherical particle given to this invention and lubricant being set having formed on the flat substrates on the coating thing of desirable coat in advance.
Form generally suitable known apparatus for coating, for example devices such as doctor knife coater, air knife doctor knife coater, roll coater, contrary roll coater, the excellent coating machine that winds the line, episodic curtain coater, slit die coating machine, heliogravure coating machine, Champflex roll coater, brush spreader, ball coating machine, two roller or metering scraper type size press coater, Billblade knife type coater, Short Dowell coating machine, door roll coater of using of coating process of coat.
Coat can be formed at the two sides of flat substrates, thereby the intermediate layer that also can be provided with more than 1 layer or 2 layers in case of necessity becomes sandwich construction.When two sided coatings or when becoming sandwich construction, each coating fluid and coating weight thereof there is no need identical, can suitably adjust, cooperate according to needed level of quality, are not particularly limited.Again, when on the single face at flat substrates coat being set, also coat or the antistatic layer that is made of synthetic resin layer, pigment and adhesive etc. can be set overleaf, thereby give its preventing property of coil paper, printing adaptability, sheet feeding/discharge adaptability etc.Again, also can be by various processing to be implemented at the back side of flat substrates, for example adhesion, sensible heat, magnetic, fire-retardant, heat-resisting, water-fast, oil resistant, back processing such as anti-skidding are used having increased under the adaptive situation of purposes.
When the present invention uses paper base material as flat substrates, after the coating liquid layer is set on the above-mentioned paper base material, after behind the common drying process or in case of necessity carrying out smoothing and handling, adjust with post processing and make moisture reach 3～10%, preferred about 4～8% with surface treatment procedure etc.
Again, smoothing handle to use the online or off line of smoothing treating apparatus such as common supercalender, gloss calender, soft calender to carry out, and the form of pressue device, the number of nip, heat etc. suitably regulated according to common smoothing treating apparatus.
When need in having implemented the coated paper that smoothing handles, possess as printing the time, according to JIS Z8741, the blank sheet of paper glossiness of incident acceptance angle 75 degree is preferred 45～80%, more preferably 55～80%.
The coated paper that makes with said method is not only applicable to lithographic printing owing to kept excellent sheet walking property, and can be used as that electrofax mode, thermal transfer mode, ink-jetting style etc. are non-to impact the image paper used for recording that mode of printing is used.
Especially, forming in the electrofax mode of image, can obtain the image of high grade with above-mentioned coated paper with the toner particle about 7 μ m.For example, if with according to ISO-13660 draft standards QEA (Quality Engineering Associates, Inc.) method is the basis, using electrophotographic printer to form image estimates, piece size (tile size) is that the model of 40 μ m is below the 10GSV (gray value), the rough degree (jaggedness) of lines is below the 10 μ m, and fuzziness (blurriness) is below the 11 μ m, can obtain very preferable image.
Again, the image portion of use electro photography printer and the fineness of blank sheet of paper portion are measured, can obtain below the Rmax 20 μ m concavo-convex few high-grade image with three-dimensional roughness meter.
Embodiment
Below enumerate embodiment the present invention is more specifically illustrated, but the present invention is not limited to these embodiment institute restricted portions." part " among the embodiment reaches " % " if there is no particular limitation, and expression " parts by mass (solid constituent) " reaches " quality % ".
Embodiment 1
[preparation of flat substrates]
(freedom (CSF)=450ml), 10 parts of NBKP (add 5 parts of precipitated calcium carbonates (PC: shiraishi calcium system) in the pulp of freedom (CSF)=450ml) at 90 parts of LBKP, add 1.5 parts of starch, 0.1 part of alkenyl succinic anhydride and 0.6 part of aluminum sulfate for 100 parts of paper pulp, with fourdrinier machine paper stock is carried out papermaking, be coated with, make its drying with the top sizing device, make that the starch coating weight reaches 1g/m in dry weight in this papermaking operation
2, carry out smoothing with machine calender and handle, making the Bekk smoothness is 30 seconds, makes quantitatively to be 80g/m
2The paper base material as flat substrates (hereinafter referred to as paper base material).
[preparation of coating fluid]
In 96 parts Block リ リ ア Application ト S-15 (composition: precipitated calcium carbonate, shiraishi calcium corporate system), add 4 parts of spherical particles (composition: the precipitated calcium carbonate of average grain diameter 10 μ m, rice village lime industrial group system), disperse the preparation pigment slurry with コ one レ ス dispersion machine.In this pigment slurry, add 3.0 parts of esterification starchs (trade name: ペ ト ロ コ one ト C-8, day shallow lake chemical company system), 10 parts of styrene-butadiene based copolymer latex (trade names; T-2550K JSR corporate system) and 0.5 part of PEM-17 (average grain diameter 0.03 μ m, サ Application ノ プ コ corporate system), stir, add water then, prepare solid component concentration and be 55% coating fluid as lubricant.
[formation of coat on the paper base material surface]
With doctor knife coater the above-mentioned coating fluid that makes is carried out two sided coatings and drying, make each single face coating weight of paper base material reach 12g/m in dry weight
2, the nip that constitutes with metallic roll and resilient roller passes through paper, and reaching glossiness is 65%, makes quantitatively to be 104g/m
2Coated paper.
Embodiment 2
Except the Block リ リ ア Application ト S-15 with embodiment 1 becomes UW-90 (composition: kaolin, エ Application ゲ Le Ha one De corporate system), in UW-90 and spherical particle, add 0.2 part of Sodium Polyacrylate (trade name: ア ロ Application A-9, East Asia Synesis Company system) as dispersant and water, be dispersed into concentration 70% with コ one レ ス dispersion machine, make outside the pigment slurry, all the other and embodiment 1 make coated paper in the same manner.
Embodiment 3
Except the umber with UW-90 among the embodiment 2 becomes 99.5 parts by 96 parts, 4 parts of spherical particles (composition: average grain diameter is precipitated calcium carbonate, the rice village lime industrial group system of 10 μ m) are become 0.5 especially, all the other and embodiment 2 prepare coated paper in the same manner.
Embodiment 4
Except the umber with UW-90 among the embodiment 2 becomes 88 parts by 96 parts, 4 parts of spherical particles (composition: average grain diameter is precipitated calcium carbonate, the rice village lime industrial group system of 10 μ m) are become 12 especially, all the other and embodiment 2 prepare coated paper in the same manner.
Embodiment 5
Except the umber with UW-90 among the embodiment 2 becomes 92 parts by 96 parts, 4 parts of spherical particles (composition: average grain diameter is precipitated calcium carbonate, the rice village lime industrial group system of 10 μ m) are become outside 8 parts of different spherical particles (composition: average grain diameter is precipitated calcium carbonate, the rice village lime industrial group system of 5 μ m), and all the other and embodiment 2 prepare coated paper in the same manner.
Embodiment 6
Except the umber with UW-90 among the embodiment 2 becomes 98 parts by 96 parts, 4 parts of spherical particles (composition: average grain diameter is precipitated calcium carbonate, the rice village lime industrial group system of 10 μ m) are become outside 2 parts of different spherical particles (composition: average grain diameter is precipitated calcium carbonate, the rice village lime industrial group system of 20 μ m), and all the other and embodiment 2 prepare coated paper in the same manner.
Embodiment 7
Except the umber with lubricant PEM-17 among the embodiment 2 becomes 2 especially by 0.5 part, all the other and embodiment 2 make coated paper in the same manner.
Embodiment 8
Except the lubricant PEM-17 among the embodiment 2 being become ノ プ コ one ト C-104HS (composition: calcium stearate, average grain diameter 4.5 μ m, サ Application ノ プ コ corporate system), umber is become 3.5 especially by 0.5 part, all the other and embodiment 2 make coated paper in the same manner.
Embodiment 9
[preparation of coating fluid]
In 100 parts of Block リ リ ア Application ト S-15 slurries, add 3.0 parts of esterification starchs (trade name: ペ ト ロ コ one ト C-8, day shallow lake chemical company system), 10 parts of styrene-butadiene based copolymer latex (trade names: T-2550K JSR corporate system), stir, add water then, make solid component concentration and be 55% coating fluid A.
Then at 96 parts of UW-90 (composition: kaolin, エ Application ゲ Le Ha one De corporate system) and 4 parts of spherical particles (composition: average grain diameter is precipitated calcium carbonate, the rice village lime industrial group system of 10 μ m), add 0.2 part of Sodium Polyacrylate (trade name: ア ロ Application A-9, East Asia Synesis Company system) as dispersant and add water, be dispersed into concentration 70% with コ one レ ス dispersion machine, make pigment slurry.T-2550K JSR corporate system) and 0.5 part of PEM-17 (average grain diameter 0.03 μ m, サ Application ノ プ コ corporate system) in this pigment slurry, add 3.0 parts of esterification starchs (trade name: ペ ト ロ コ one ト C-8, day shallow lake chemical company system), 10 parts of styrene-butadiene based copolymer latex (trade name: as lubricant, stir, add water then, make solid component concentration and be 55% coating fluid B.
[formation of coat on the paper base material surface]
With doctor knife coater coating fluid A is carried out two sided coatings and drying on the paper base material of embodiment 1 record, make the coating weight of each single face of paper base material reach 12g/m in dry weight
2, use doctor knife coater two sided coatings coating fluid B then, carry out drying and make the coating weight of each single face reach 12g/m in dry weight
2, making coated paper, the total coating weight of each single face of coat that it has reaches 24g/m in dry weight
2Make the nip of this coated paper by constituting with metallic roll and resilient roller, reach glossiness 70%, making quantitatively is 128g/m
2Coated paper.
Embodiment 10
[preparation of flat substrates]
In 90 parts of LBKP (freedom (CSF)=450ml), 10 parts of NBKP (add 5 parts of precipitated calcium carbonate (PC: the shiraishi calcium corporate system) in the paper pulp of freedom (CSF)=450ml), add 1.5 parts of starch for this paper pulp, 0.1 part alkenyl succinic anhydride and 0.6 part of aluminum sulfate, with fourdrinier machine paper stock is carried out papermaking, contain the spherical particle (composition: polyethylene that average grain diameter is 30 μ m with the coating of top sizing device, ミ ペ ロ Application XM-220, the Mitsui Chemicals corporate system) following coating fluid, make its drying, make the dry weight of coating weight in this papermaking operation reach 1.5g/m
2, carry out smoothing with machine calender and handle, making the Bekk smoothness is 5 seconds, makes quantitatively to be 80g/m
2Paper base material.
Surperficial every 1mm at above-mentioned body paper
2800 convex shaped parts are arranged.
[top sizing coating fluid]
10 parts of spherical particles (ミ ペ ロ Application XM-220, Mitsui Chemicals corporate system)
90 parts of エ one ス A (oxidized starch, prince コ Application ス corporate system)
[preparation of coating fluid and coating]
In 96 parts of UW-90 (composition: kaolin, エ Application ゲ Le Ha one De corporate system) and 4 parts of K9 (composition: powdered whiting, be equipped with northern efflorescence corporate system), add 0.2 part of Sodium Polyacrylate (trade name: ア ロ Application A-9, East Asia Synesis Company system) as dispersant and add water, disperse the pigment slurry of preparation concentration 70% with コ one レ ス dispersion machine.In this pigment slurry, add 3.0 parts of esterification starchs (trade name: ペ ト ロ コ one ト C-8, day shallow lake chemical company system), 10 parts of styrene-butadiene based copolymer latex (trade name: T2550K JSR corporate system) and 1.0 parts of PEM-17 (average grain diameter 0.03 μ m, サ Application ノ プ コ corporate system) as lubricant, stir, add water then, the preparation solid component concentration is 55% coating fluid.
[formation of coat on the paper base material surface]
With doctor knife coater the coating fluid that makes is carried out two sided coatings and drying, make the coating weight of above-mentioned each single face of paper base material reach 12g/m in dry weight
2, make its nip by constituting by metallic roll and resilient roller, make glossiness reach 65%, making quantitatively is 104g/m
2Coated sheet.
Embodiment 11
Except the paper base material among the embodiment 2 being replaced with polypropylene-based synthetic paper (trade name: YUPO FPG130,100g/m
2, コ Port コ one Port レ one シ ヨ Application corporate system) as flat substrates, make the umber of UW-90 become 99.7 parts by 96 parts, 4 parts of spherical particles (composition: the precipitated calcium carbonate of average grain diameter 10 μ m, rice village lime industrial group system) are become 0.3 part, be 124g/m
2Coated paper outside, make coated paper in the same manner with embodiment 2.
Embodiment 12
Except the paper base material among the embodiment 2 being become paper base material, make coated paper in the same manner with embodiment 2 by following preparation.
[preparation of flat substrates]
At 40 parts of LBKP (freedom (CSF)=450ml), 10 parts of NBKP (freedom (CSF)=450ml), 50 parts of deinked waste paper paper pulp (interpolation 5 parts of precipitated calcium carbonates (PC: shiraishi calcium system) in the paper pulp of freedom (CSF)=400ml), add 1.5 parts of starch, 0.1 part of alkenyl succinic anhydride and 0.6 part of aluminum sulfate for 100 parts of paper pulp, with fourdrinier machine paper stock is carried out papermaking, be coated with, make its drying with the top sizing device, make the dry weight of starch coating weight in this papermaking operation reach 1g/m
2, carry out smoothing with machine calender and handle, making the Bekk smoothness is 30 seconds, makes quantitatively to be 80g/m
2Paper base material.
Embodiment 13
Except the paper base material among the embodiment 2 being become paper base material, make coated paper in the same manner with embodiment 2 by following preparation.
[preparation of flat substrates]
(add 5 parts of precipitated calcium carbonate (PC: the shiraishi calcium corporate system) in the freedom (CSF)=400ml) at 100 parts of deinked waste paper paper pulp, add 1.5 parts of starch, 0.1 part of alkenyl succinic anhydride and 0.6 part of aluminum sulfate for 100 parts of paper pulp, with fourdrinier machine paper stock is carried out papermaking, be coated with, make its drying with the top sizing device, make the dry weight of starch coating weight in this papermaking operation reach 1g/m
2, carry out smoothing with machine calender and handle, making the Bekk smoothness is 30 seconds, makes quantitatively to be 80g/m
2Paper base material.
Comparative example 1
Except the cooperation umber with lubricant PEM-17 among the embodiment 2 becomes 0 especially by 0.5 part, make coated paper in the same manner with embodiment 2.
Comparative example 2
Except the cooperation umber with lubricant PEM-17 among the embodiment 2 becomes 10.0 especially by 0.5 part, make coated paper in the same manner with embodiment 2.
Comparative example 3
Except the umber with UW-90 among the embodiment 2 becomes 100 parts by 96 parts, 4 parts of spherical particles (composition: the precipitated calcium carbonate of average grain diameter 10 μ m, rice village lime industrial group system) become 0 especially, make coated paper in the same manner with embodiment 2.Do not observe convex shaped part on the coated paper surface that makes.
Comparative example 4
Except the umber with UW-90 among the embodiment 2 becomes 100 parts by 96 parts, 4 parts of spherical particles (composition: the precipitated calcium carbonate of average grain diameter 10 μ m, rice village lime industrial group system) become outside 4 parts of different spherical particles (composition: the precipitated calcium carbonate of average grain diameter 1 μ m, rice village lime industrial group system), make coated paper in the same manner with embodiment 2.Do not observe convex shaped part on the coated paper surface that makes.
Comparative example 5
Except the umber with UW-90 among the embodiment 2 becomes 99.5 parts by 96 parts, 4 parts of spherical particles (composition: the precipitated calcium carbonate of average grain diameter 10 μ m, rice village lime industrial group system) become 0.5 part of different spherical particle (goods name: MR-60G, average grain diameter 60 μ m, composition: crosslink propylene acid particles, the comprehensive chemical company's system of grinding) outside, makes coated paper in the same manner with embodiment 2.When the coated paper printing that makes, produce the transfer spot of printing ink.
Comparative example 6
Except the umber with lubricant PEM-17 in the coating fluid among the embodiment 11 becomes 0 part, make coated paper in the same manner with embodiment 11.On the coated paper that makes, do not observe convex shaped part.
Evaluation method
[mensuration of the average grain diameter of spherical particle]
Observe the spherical particle that is matched with in the coating fluid with コ one Le one マ Le チ サ イ ザ one II of ベ Star Network マ Application コ one Le one corporate system, measure 100,000 particles, with volume average particle size as average grain diameter.
[counting of coat surface convex shaped part]
Be amplified to 200 times with electron microscope, calculate 100mm
2The convex shaped part on coat surface is converted into every 1mm
2Number.The results are shown in table 1.
[mensuration of coat surface convex shaped part height]
With three-dimensional surface structure elucidation microscope ザ イ go corporate system NewView200, with the height of 100 convex shaped parts of multiplying powers mensuration of 1000 times, with the height of mean value as convex shaped part.
[evaluation of coefficient of friction between paper]
Based on the horizontal process of JIS P8147, coefficient of friction between the paper of the coated paper that ISO environment (23 ℃ of temperature, relative humidity 50%) makes with テ Application シ ロ Application stretching test machine determination down.
[printing of coated paper]
Use Mitsubishi Heavy Industries's system lithographic plate four-color press to print under the following conditions.
Environment: 20 ℃, 65%RH
Print speed printing speed: 8000 pages/hour
Printing number of pages: 8000 pages
Drying condition: the using gases heater is adjusted into 150 ℃ with paper surface temperature
Powder: silicon applies starch, particle diameter 25 μ m
[the offset evaluation at the back side]
With following metewand to 8000 pages of printings after the contamination situation of back side of paper estimate.
◎: do not stain fully.Quality is excellent especially.
Zero: do not observe contamination.Do not have problems in practicality, quality is also very excellent.
△: observe a little contamination, but in practicality, do not have problems.
*: frequently observe contamination, have sticking page or leaf to produce.Existing problems in the practicality, quality is also poor.
[printing intensity evaluation]
According to following benchmark, the deposit amount during from above-mentioned printing test on the woollen blanket (blanket) is estimated printing intensity.
Zero: do not observe deposit.No problem in the practicality, quality is also excellent.
△: observe a little deposit, but practical no problem.
*: observe the bulk deposition thing, existing problems in the practicality, quality is also poor.
[evaluation of blank sheet of paper glossiness]
Based on JIS Z8741, be to measure the blank sheet of paper glossiness under 75 conditions of spending in incidence angle and acceptance angle.Analyzer uses the corporate system GLOSS METER MODELGM-26D of color research institute in the village.
[evaluation of paper walking property]
Use RICOH corporate system color copy machine IPSiO Color2100, use colored original, duplicate the coated paper of 1000 pages of A4 sizes continuously, paper walking property is estimated.
Zero: the overlapping conveying or the paperboard of no paper, walking property excellence.
△: the overlapping conveying of paper or paperboard be less than 5 pages, sometimes formation problem in practicality.
*: the overlapping conveying of paper or paperboard are more than 5 pages, become problem in practicality.
[evaluation of paper base material and coated paper]
Use commentary valency method, (individual/m to the convex shaped part number of the average grain diameter (μ m) of spherical particle, the coated paper that makes
2) and offset, printing intensity and the paper walking property at height (μ m), coefficient of friction, the back side estimate, it the results are shown in table 1.
Table 1
| The spherical particle particle diameter | The convex shaped part number | The convex shaped part height | Lubricant quality % | Coefficient of friction | Stain at the back side | Printing intensity | Walking property | |
| Embodiment 1 | ??10.0 | ??250 | ??1.7 | ??0.44 | ????0.60 | ????◎ | ????○ | ??○ |
| Embodiment 2 | ??10.0 | ??300 | ??1.8 | ??0.44 | ????0.55 | ????◎ | ????○ | ??○ |
| Embodiment 3 | ??10.0 | ??40 | ??1.8 | ??0.44 | ????0.59 | ????○ | ????○ | ??○ |
| Embodiment 4 | ??10.0 | ??500 | ??1.9 | ??0.44 | ????0.51 | ????◎ | ????○ | ??○ |
| Embodiment 5 | ??5.0 | ??600 | ??1.0 | ??0.44 | ????0.62 | ????○ | ????○ | ??○ |
| Embodiment 6 | ??20.0 | ??100 | ??3.5 | ??0.44 | ????0.55 | ????○ | ????○ | ??○ |
| Embodiment 7 | ??10.0 | ??300 | ??1.8 | ??1.74 | ????0.50 | ????◎ | ????○ | ??○ |
| Embodiment 8 | ??10.0 | ??300 | ??1.8 | ??3.00 | ????0.63 | ????◎ | ????○ | ??○ |
| Embodiment 9 | ??10.0 | ??300 | ??2.3 | ??0.22 | ????0.53 | ????◎ | ????○ | ??○ |
| Embodiment 10 | ??30.0 | ??200 | ??3.9 | ??0.88 | ????0.54 | ????◎ | ????○ | ??○ |
| Embodiment 11 | ??10.0 | ??800 | ??3.6 | ??0.44 | ????0.53 | ????◎ | ????○ | ??○ |
| Embodiment 12 | ??10.0 | ??300 | ??1.7 | ??0.44 | ????0.56 | ????◎ | ????○ | ??○ |
| Embodiment 13 | ??10.0 | ??250 | ??1.5 | ??0.44 | ????0.58 | ????○ | ????○ | ??○ |
| Comparative example 1 | ??10.0 | ??300 | ??1.8 | ??0 | ????0.80 | ????◎ | ????○ | ??× |
| Comparative example 2 | ??10.0 | ??300 | ??1.8 | ??8.12 | ????0.35 | ????◎ | ????× | ??○ |
| Comparative example 3 | ??- | ??- | ??- | ??0.44 | ????0.78 | ????△ | ????○ | ??× |
| Comparative example 4 | ??- | ??- | ??- | ??0.44 | ????0.77 | ????△ | ????○ | ??× |
| Comparative example 5 | ??60.0 | ??60 | ??20 | ??0.44 | ????0.65 | ????◎ | ????△ | ??○ |
| Comparative example 6 | ??- | ??- | ??- | ??0 | ????0.80 | ????△ | ????○ | ??× |
Coated paper of the present invention not only has excellent paper walking property in the lithographic plate sheet-feed printer, and the back side contamination that the back side of paper does not produce printing ink after printing, makes high quality images, has practical value.
Claims (6)
1. coated paper, it comprises: flat substrates and what be provided with on the one side at least of this flat substrates is the coat of principal component with pigment and adhesive, the last every square millimeter of convex shaped part that to have 10～1000 height be 0.5～10.0 μ m in wherein said coat surface and contain the lubricant of 0.1～5.0 quality % in described coat.
2. coated paper according to claim 1, the average grain diameter of wherein said lubricant are 0.005～1.0 μ m.
3. coated paper according to claim 1 and 2 wherein contains the spherical particle that average grain diameter is 3.0～50.0 μ m in described coat.
4. coated paper according to claim 1 and 2, wherein said flat substrates contain the spherical particle that average grain diameter is 3.0～50.0 μ m at its surface portion at least.
5. according to each described coated paper of claim 1～4, the blank sheet of paper glossiness on wherein said coat surface is 45～80%.
6. according to each described coated paper of claim 1～5, wherein said coat surface is that 23 ℃, relative humidity are that the confficient of static friction of measuring under 50% the ISO environment is 0.2～0.7 in temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2003101025188A CN1497100A (en) | 2002-10-22 | 2003-10-22 | Coated paper |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002307157 | 2002-10-22 | ||
| CNA2003101025188A CN1497100A (en) | 2002-10-22 | 2003-10-22 | Coated paper |
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|---|---|
| CN1497100A true CN1497100A (en) | 2004-05-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2003101025188A Pending CN1497100A (en) | 2002-10-22 | 2003-10-22 | Coated paper |
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| CN (1) | CN1497100A (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101210398B (en) * | 2007-12-24 | 2010-06-02 | 上海东升新材料有限公司 | Dope used as primary coat, floating coat and top coat of non-surface-slurry coating paper |
| CN102220727A (en) * | 2011-06-09 | 2011-10-19 | 金东纸业（江苏）股份有限公司 | Coated paper and manufacture method thereof |
| CN101243226B (en) * | 2005-06-20 | 2011-11-09 | 大王制纸株式会社 | Process for producing coated paper and coated paper |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101243226B (en) * | 2005-06-20 | 2011-11-09 | 大王制纸株式会社 | Process for producing coated paper and coated paper |
| CN101210398B (en) * | 2007-12-24 | 2010-06-02 | 上海东升新材料有限公司 | Dope used as primary coat, floating coat and top coat of non-surface-slurry coating paper |
| CN102220727A (en) * | 2011-06-09 | 2011-10-19 | 金东纸业（江苏）股份有限公司 | Coated paper and manufacture method thereof |
| CN102828439A (en) * | 2011-06-13 | 2012-12-19 | 金东纸业（江苏）股份有限公司 | Transfer printing paper and production method thereof |
| CN102828439B (en) * | 2011-06-13 | 2015-02-18 | 金东纸业（江苏）股份有限公司 | Transfer printing paper and production method thereof |
| CN102505572A (en) * | 2011-11-03 | 2012-06-20 | 岳阳林纸股份有限公司 | Method for producing noodle packing paper |
| CN103184709A (en) * | 2011-12-28 | 2013-07-03 | 康吉诺（北京）科技有限公司 | Manufacturing method for environment-friendly carbonless copy base paper |
| CN104703806A (en) * | 2012-10-11 | 2015-06-10 | 三菱制纸株式会社 | Method for manufacturing printed products using industrial inkjet printer |
| CN104875518A (en) * | 2014-02-27 | 2015-09-02 | 金东纸业（江苏）股份有限公司 | Coating material, thermal transfer printing paper, and thermal transfer printing paper preparation method |
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