CN1928225A - Coated paper - Google Patents
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- CN1928225A CN1928225A CN 200610151421 CN200610151421A CN1928225A CN 1928225 A CN1928225 A CN 1928225A CN 200610151421 CN200610151421 CN 200610151421 CN 200610151421 A CN200610151421 A CN 200610151421A CN 1928225 A CN1928225 A CN 1928225A
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Abstract
The present invention provides a coated paper, which could not have adhesiveness and drape with the printing cyliner when printing by large-format sheet-fed offset printing mMachine, and which has perfect printing ink dryness, improved printing operation, high white paper gloss and lou weight. The coated paper includes, on at least one side of its base paper, two or more coating layers comprising a pigment and an adhesive as main components, said coated paper having, in its base coating layer in contact with the base paper, at least 50 parts by mass of a flat shape pigment per 100 parts by mass of the total amount of the pigments, said flat shape pigment satisfying the following conditions (1) and (2), and having a Clark stiffness along the CD direction of at least 14 cm and a white paper glossiness of at least 45%: (1) an average particle size of 0.2 to 5.0 mu m, determined by the sedimentation method: (2) an aspect ratio (long axis/thickness) of 25 to 120.
Description
Technical field
The present invention relates to a kind of coated paper, described coated paper is corresponding with the offset press of large format, and adhesion and fold to printing cylinder can not take place when printing, and ink setting is good, and presswork improves, blank sheet of paper glossiness height, and grammes per square metre is 80g/m
2Following coated paper.
Background technology
In general, coated paper for printing is to make by carry out drying after coating is the coating fluid of principal component on the one side at least of body paper with pigment and adhesive.Coated paper for printing is categorized as cast-coated paper, art paper, coated paper, light weight coated paper etc. according to the coating weight of coating fluid, the processing method of coated paper, and these coated papers are implemented behind polychrome printing or the single color printing just to be widely used with printed article or as the publication of books, magazine etc. as the commerce of poster, brochure, advertisement poster etc. to it.
In recent years, for attention rate, carrying out visualization, the colorize of mail advertisement by providing information to improve client always.The mail advertisement is also different according to the rate that varies in weight of content, and therefore for cutting down cost, the lightweight of strong request coated paper for printing approaches materialization.In addition, the trend development that also shortens towards delivery date.
In order to improve the stiffness of coated paper for printing, the technical scheme that the bulking that has proposed the density by reducing coated paper and thickened paper thickness improves stiffness.Specifically, proposed to make the bulk method of body paper itself (with reference to patent documentation 1～2) all the time, utilized method (with reference to patent documentation 3～5) that hot soft calender etc. handles the coating that is coated on the body paper by adding leavening agent, as method (with reference to patent documentation 6～7) of the pigment use hollow plastic pigment that in coating, cooperates or the like.
In a word, the prior art scheme relevant with bulking, when adopting more bulk body paper to be used as the body paper of coated paper for printing, when the coated paper that coating coating fluid on body paper is obtained carries out the press polish processing, reduce to be applied to the pressing force on body paper, the coating as far as possible.,, then handle the effect of the smoothing that improves coating by press polish if the pressing force when press polish is handled alleviates, with the occasion that does not alleviate this pressing force relatively, diminish sometimes, can not realize the stiffness that the present invention is desired.In addition, it is still undiscovered to have the technology of blank sheet of paper glossiness and ink setting simultaneously.
[patent documentation 1] spy opens the 2002-155494 communique
[patent documentation 2] spy opens the 2003-171893 communique
[patent documentation 3] spy opens flat 06-192996 communique
[patent documentation 4] spy opens flat 09-228298 communique
[patent documentation 5] spy opens flat 06-294100 communique
[patent documentation 6] spy opens the 2002-220795 communique
[patent documentation 7] spy opens flat 09-119090 communique
Summary of the invention
The objective of the invention is to improve above-mentioned problem points, provide a kind of when adopting the offset press of large format, adhesion and fold to printing cylinder can not take place, and ink setting is good, presswork improves, the coated paper of the low grammes per square metre that the blank sheet of paper glossiness is high.
The inventor etc. are in order to achieve the above object and found that of diligent investigation: being provided with on the one side at least of body paper more than 2 layers is in the coated paper of coating of principal component with pigment and adhesive, pigment composition with the priming coat that contacts with body paper, contain the coating of the flat pigment more than 50 parts by mass in whole pigment 100 parts by mass and coated paper with rerum natura of defined, can suppress the adhesion of printing cylinder and the generation of fold, and ink setting is good, and the presswork performance is enough significantly improved.
Promptly, coated paper of the present invention, it is characterized in that, being provided with on the one side at least of body paper more than 2 layers is the coating of principal component with pigment and adhesive, with priming coat that body paper contacts in, preferred only in this priming coat, contain the flat pigment that satisfies following condition (1) and (2) more than 50 parts by mass with respect to whole pigment 100 parts by mass, and the Clark stiffness of its CD direction of above-mentioned coated paper is more than the 14cm, its surperficial blank sheet of paper glossiness is more than 45%
(1) the average grain particle diameter that adopts subsidence style to measure: 0.2～5.0 μ m;
(2) aspect ratio (major diameter/thickness): 25～120.
Above-mentioned flat pigment optimization is engineering level kaolin (Engineerad kaorin).In addition, the air permeability of above-mentioned coated paper was preferably below 7000 seconds.Further, the adhesive ingredients of above-mentioned priming coat, pigment composition 100 parts by mass with respect to being contained in the priming coat are preferably 5～30 parts by mass.
The fiber orientation ratio of above-mentioned body paper is preferably 1.00～1.50, further, is preferably 1.00～1.50 from the fiber orientation ratio of the surface measurements of coated paper.In addition, the grammes per square metre of above-mentioned coated paper is preferably 35～80g/m
2Further, preferably contain 0.5g/m in the finishing coat on above-mentioned priming coat
2Above particle diameter is the following subparticle of 500nm.Preferably in above-mentioned priming coat, contain the spherical particle that the average grain particle diameter is 1～50 μ m.
The coated paper that obtains according to the present invention is characterized in that, when the offset press printing of adopting large format, adhesion and fold to printing cylinder can not take place, and ink setting is good, and presswork improves, and blank sheet of paper glossiness height has 80g/m
2Following grammes per square metre.
The specific embodiment of invention
Contained flat pigment in the coating of the present invention, preferably the average grain particle diameter that is recorded by subsidence style is 0.2～5.0 μ m, aspect ratio (major diameter/thickness) in 25～120 scope, preferred average grain particle diameter is in the scope of 0.2～4.0 μ m, and preferred aspect ratio is in 30～120 scope.When the average grain particle diameter greater than 5.0 μ m or aspect ratio greater than 120 the time, it is big that the CD stiffness of resulting coated paper becomes, but air permeability uprises, perhaps blank sheet of paper glossiness step-down, can not realize desired blank sheet of paper glossiness sometimes, below 7000 seconds, preferred below 5000 seconds, the more preferably air permeability below 4000 seconds.On the other hand, when the average grain particle diameter less than 0.2 μ m or aspect ratio less than 25 the time, though can obtain high blank sheet of paper glossiness, cause sometimes that air permeability increases, the CD stiffness reduces.
In addition, in the above-mentioned priming coat of coated paper of the present invention, the preferred flat pigment that only in this priming coat, contains, preferably the average grain particle diameter that is recorded by subsidence style is 0.2～5.0 μ m, aspect ratio in 25～120 scope, preferred average grain particle diameter is in the scope of 0.2～4.0 μ m, and preferred aspect ratio is in 30～120 scope.Flat pigment optimization like this is an engineering level kaolin.The thin plate shaped degree of common delaminated kaoline (flat property) is generally used aspect ratio (major diameter/thickness) statement, and aspect ratio is high more, the pigment shape of the tabular (high flat property) that expression granules of pigments shape is thin, wide, big.The numerical value of the aspect ratio of general used delaminated kaoline is about 15～20, but the flat pigment that uses in the present invention has the high flat property about 25～120 like that according to above-mentioned, further, and aspect ratio more preferably 30～120.
Have the situation of the effect that improves the CD stiffness fully not distinguish as yet for the flat pigment of the shape of high aspect ratio as described above, but be estimated as: on one side flat pigment on one side lamination laterally connection also takes place, thereby the stiffness increase.
The present invention is feature so that flat pigment is coupled in the priming coat especially, but also can be coupled in the finishing coat in the scope that does not reduce desired quality.
In the pigment composition of priming coat, as with other pigment of flat pigment and usefulness, also can use calcium carbonate, kaolin, calcined kaolin, delaminated kaoline, talcum, calcium sulfate, barium sulfate, aluminium hydroxide, satin white, titanium dioxide, zinc oxide, aluminium oxide, magnesium carbonate, magnesia, silica, Almasilate, the calcium silicates bentonite, zeolite, sericite, inorganic pigments such as montmorillonite, polystyrene resin, styrene-propene acid copolymer resins, urea resin, melamine resin, acrylic resin, vinylidene resin, the compact-type of benzoguanamine resin, hollow type, connect organic pigments such as pass resin, can from these materials, suit to select more than a kind or 2 kinds.
The adhesive ingredients of above-mentioned priming coat, pigment composition 100 parts by mass with respect to being contained in the priming coat are preferably 5～30 parts by mass, more preferably 7～20 parts by mass.When adhesive ingredients was less than 5 parts by mass, the intensity of coating was low, can not print sometimes.On the other hand, when adhesive ingredients during, cause the ink setting reduction because of air permeability sharply increases sometimes, reduce because of smoothness reduces the blank sheet of paper glossiness that causes coated paper more than 30 parts by mass.
For the adhesive ingredients of priming coat, can exemplify out vinyl based polymer latex such as Styrene-Butadiene, methyl methacrylate butadi ene copolymer equiconjugate diene polymer latex, acrylic acid series polymeric compounds latex, ethylene-vinyl acetate copolymer etc.Above-mentioned adhesive can suit to use more than a kind or 2 kinds.
In addition, also can and use water-soluble binder.As water-soluble binder, can exemplify out cellulose derivative, polyvinyl alcohol and modified products thereof etc. such as various starch based such as oxidized starch, esterification starch, cool water soluble starch, casein, soybean protein, synthetic proteins etc. are protein-based, carboxymethyl cellulose, methylcellulose.
Its average grain particle diameter of spherical particle in the priming coat is preferably 1～50 μ m.Can more preferably use the grain diameter spherical particle bigger than the thickness of priming coat.In addition, the use level of the spherical particle in the priming coat with respect to whole pigment composition 100 parts by mass, is preferably 1～40 parts by mass.Illustrate in passing, the average grain particle diameter is less than the occasion of 1 μ m, perhaps the use level of this spherical particle is less than the occasion of 1 parts by mass, coating surface is difficult to form protuberance, perhaps the number of protuberance is few, so the coefficient of friction of coating surface uprises its result, adhesiveness between paper improves, the sheet feeding section of the printing machine paper feeding that overlaps sometimes.The average grain particle diameter is greater than the occasion of 50 μ m, and perhaps the use level of this spherical particle is more than the occasion of 40 parts by mass, and the adhesiveness between paper reduces, and takes place though therefore can prevent the overlapping paper feeding of sheet feeding section, and the blank sheet of paper glossiness reduces.
Among the spherical particle of Shi Yonging,, enumerate precipitated calcium carbonate, magnesium carbonate etc. in the present invention, can be among these materials suitablely select a kind or 2 kinds to use as inorganic pigment.
In the present invention among the spherical particle of Shi Yonging, as compact-type, hollow type, perforation pass organic pigment, enumerating polystyrene resin, styrene-propene acid copolymer and be resin, urea and be resin, melamine and be resin, acrylic resin, vinylidene chloride resin, benzoguanamine is resin etc., can be among these materials suitablely selects a kind or 2 kinds to use.In addition, also can and land used use inorganic pigment and organic pigment.
The spherical particle of Shi Yonging is feature to be coupled in the priming coat, but also can cooperates in finishing coat in the scope that does not reduce desired quality in the present invention.
The priming coat of coated paper of the present invention is by on the one or both sides of coating body paper and carry out drying and form.Can adopt during coating that roller coating, airblade coating, rod are coated with, scraper plate coating, spraying, heavy curtain coating, mould are coated with etc.Coating weight is at the single face average out to 2～10g/m of body paper
2Scope in select.In addition, the smoothness of priming coat preferably is adjusted into 30～500 seconds scope.
When forming the back with the finishing coat that is described in detail, under the situation that adopts the scraper plate coating, if the smoothness of priming coat surpasses 500 seconds, striped or cut often take place on the finishing coat then., if the smoothness of priming coat is lower than 500 seconds, then can prevent the generation of striped or cut fully.
The finishing coat of coated paper of the present invention, by at the surface coated finishing coat that is formed at the priming coat on the body paper with coating fluid and carry out drying and form, described finishing coat coating fluid, separately use or and used the average grain particle diameter in the scope of 0.01～3.0 μ m, preferably at organic pigment, the inorganic pigment of the scope of 0.01～1.0 μ m, and to contain with respect to pigment 100 parts by mass be the adhesive of 1～20 parts by mass.Can adopt during coating that roller coating, airblade coating, rod are coated with, scraper plate coating, spraying, heavy curtain coating, mould are coated with etc.The coating weight of finishing coat is lacked than the coating weight of above-mentioned priming coat, at single face average out to 0.5～8g/m
2Scope in select.
Resembling the reason of the average grain particle diameter of the organic pigment stipulating above-mentioned to be contained in the above-mentioned finishing coat, inorganic pigment, is in order to obtain desired blank sheet of paper glossiness and air permeability.In addition, if coating weight also surpasses above-mentioned scope, then air permeability becomes big, and often gas permeability is poor.On the other hand, the occasion that coating weight is few can not obtain the glossiness of target sometimes.
As the inorganic pigment that in finishing coat, uses, for example can enumerate calcium carbonate, calcined kaolin, engineering level kaolin, delaminated kaoline, talcum, calcium sulfate, barium sulfate, aluminium hydroxide, satin white, titanium dioxide, zinc oxide, aluminium oxide, magnesium carbonate, magnesia, silica, Almasilate, calcium silicates bentonite, zeolite, sericite, montmorillonite etc.In addition, as organic pigment, can enumerate the organic pigment etc. of the compact-type, hollow type, perforation pass resin etc. of polystyrene resin, styrene-propene acid copolymer resins, urea resin, melamine resin, acrylic resin, vinylidene resin, benzoguanamine resin.Can from these materials, suit to select a kind or 2 kinds to use.In addition, to the diligent result who discusses of the embodiment of gloss, distinguished that especially preferably cooperating grain diameter is the subparticle of following shaped plastics pigment of 500nm and adhesive type pigment etc.The use level of this subparticle is preferably more than the 50 quality % of finishing coat.
Adhesive ingredients for finishing coat, same with the situation of the priming coat of having narrated, can exemplify out vinyl based polymer latex such as Styrene-Butadiene, methyl methacrylate butadi ene copolymer equiconjugate diene polymer latex, acrylic acid series polymeric compounds latex, ethylene-vinyl acetate copolymer etc.In addition, also can and use water-soluble binder.As water-soluble binder, can exemplify out cellulose derivative, polyvinyl alcohol and modified products thereof etc. such as various starch based such as oxidized starch, esterification starch, cool water soluble starch, casein, soybean protein, synthetic proteins etc. are protein-based, carboxymethyl cellulose, methylcellulose.Material more than a kind or 2 kinds in these materials can use as the adhesive ingredients of finishing coat.
At the coating fluid that is used to form priming coat and being used to form in the coating fluid of finishing coat, can distinguish various auxiliary agents such as the dyestuff that cooperates blue system or purple system as required aptly, organic pigment, fluorescent dye, tackifier, water retention agent, antioxidant, age resister, conduction induction agent, defoamer, ultra-violet absorber, dispersant, pH regulator agent, releasing agent, anti-hydrated agent, water-repelling agent.
For forming the coated paper that finishing coat has been coated with coating fluid, be supplied to manufacturing procedure, in this operation, for example can use supercalender, gloss calender, soft calender etc., but therein, the preferred calender that possesses the hard resin roller that adopts.
In the present invention, because the average grain particle diameter of the pigment composition that in to priming coat and finishing coat, contains respectively carry out specific in, this priming coat and finishing coat are set on the one or both sides of body paper, therefore as long as calender does not adopt extra high pressing force, by industry calender processing commonly used, just can access density is 1.10g/cm
3Following coated paper for printing.
The stiffness of coated paper of the present invention is during less than 14cm, and under printing machine, dry electronic photo mode, because the heat when deciding toner easily sticks on the roller of deciding portion with paper, the walking that becomes sometimes is bad.In addition, the blank sheet of paper glossiness on surface was less than 45% o'clock, and is big with the gloss difference of image portion, can not obtain having the high-grade image of the desired gloss of the application sometimes.
The moisture of coated paper of the present invention is adjusted into 3～10% scope usually.4～8% scope more preferably.Moisture can not be reached the occasion of 3～10% scope, and coated paper takes place to curl sometimes, can not carry out stable printing.
The grammes per square metre of coated paper of the present invention is 35～80g/m
2, be preferably 45～75g/m
2, when grammes per square metre less than 35g/m
2The time, the fold that causes by the wet water in when printing become remarkable.In addition, what the carrying out of the fold that the wet water that prevents by when printing is caused diligently discussed found that, is adjusted into 1.00～1.50 by the fiber orientation with body paper than preferably, more preferably is adjusted into 1.00～1.40, just can prevent the fold generation.As concrete correspondence, enumerate slurry network speed ratio, the adjustment drying condition (tractive force during drying, baking temperature etc.) of adjusting paper machine.Have, when the fiber orientation ratio of body paper surpassed 1.50, the CD stiffness of coated paper diminished again, the fold that the wet water when taking place by printing sometimes causes.In addition, similarly, even from the surface measurements fiber orientation ratio of coated paper, also the optimum fiber orientation ratio is 1.00～1.50, more preferably 1.00～1.40.
Paper pulp about body paper, its method for making and kind etc. are not particularly limited, also can use old paper stock such as mechanical pulps such as KP, SGP, RGP, BCTMP, CTMP, de inked pulp or resemble organic synthetic fibers such as non-wood pulp bluish dogbane, bamboo, wheat straw, the fiber crops etc., polyamide fiber, polyester fiber, poly-fiber, and inorganic fibres such as glass fibre, ceramic fibre, carbon fiber.In addition, preferably use no chlorine paper pulp such as ECF paper pulp and TCF paper pulp.Further, from the viewpoint of protection of resources, the preferred paper pulp that obtains through the authentic authentication of forest woods, tree planting forest or thinnings sheet material by so-called that uses.
In addition, in body paper, can cooperate filler as required.As the filler under this situation, be not particularly limited, but can list the various pigment that generally in good quality paper, use, for example mineral pigment, polystyrene resin, urea resin, melamine resin, acrylic resin, vinylidene resin and their organic pigments such as small hollow particle such as kaolin, calcined kaolin, calcium carbonate, calcium sulfate, barium sulfate, titanium dioxide, talcum, zinc oxide, aluminium oxide, magnesium carbonate, magnesia, silica, white carbon, bentonite, zeolite, sericite, montmorillonite.
Moreover, in paper stock, except paper pulp fiber, filler, in the scope of not damaging desired effect of the present invention, can also suit as required to select to use retention agent, drainability improving agent, paper strengthening agent and the Internal Size etc. of various anionic properties, nonionic, CATION or the both sexes always always used various copy paper with in add auxiliary agent.And then, also can according to the purposes of paper suitable add dyestuff, fluorescent whitening agent, pH adjust agent, defoamer, resin obstruction controlling agent, slime-control agent etc. copy paper with in add auxiliary agent.
Do not limit especially for copying the paper method, for example can be applicable to that copying paper pH is that near 4.5 acidity are copied the paper method, contain alkaline filler such as calcium carbonate as principal component, copied paper pH and be about 6 faintly acid～copy paper pH and be about all paper methods of copying that 9 weakly alkaline neutrality is copied paper method etc., paper machine also can use fourdrinier machine, twin-wire paper-machine, cylinder mould machine, Yankee formula single cylinder paper machine aptly.The grammes per square metre of resulting body paper is preferably 30～75g/m
2
Much less the coated paper that utilizes above-mentioned method to obtain can be used as hectographic printing and uses with paper, owing to the high flatness and the highly-breathable on surface, also can be used as the image paper used for recording of the non-impact printing mode of electronic photo mode and thermal transfer mode etc.
In above-mentioned image record, particularly adopt the electronic photo mode of the toner-particle formation image about 5～7 μ m, by using above-mentioned coated paper, can access the image of high grade.For example worked as based on foundation ISO-13660 draft standard QEA (Quality EngineeringAssosiates, Inc.) method, use electronic photo mode printing machine to form image and when estimating, mosaic size (tile size) is that the spot (mottle) under the 40 μ m is below the 10GSV (Grey ScaleValue), the edge roughness of lines (jaggedness) is below the 10 μ m, fuzziness (グ ラ リ ネ ス) is below the 11 μ m, can access utmost point preferable image.
Embodiment
Below enumerate embodiment and specify the present invention, but much less, the present invention is not limited by these embodiment.In addition, only otherwise specify that part and % in the example represent parts by mass and quality % respectively.
Embodiment 1
[preparation of bottom coating fluid]
With respect to 100 parts of interpolations of engineering level kaolin to be disperseed and in the aqueous solution that obtains as 0.1 part of the Sodium Polyacrylate of dispersant, interpolation is as the engineering level kaolin (trade name: Contour1500 of flat pigment, the average grain particle diameter is 0.46 μ m, aspect ratio is 59, イ メ リ ス corporate system) 100 part, disperse with Kao Laisi (コ-レ ス) dispersion machine, prepared pigment slurry.In these slurries, with respect to 100 parts of pigment, add oxidized starch (trade name: エ-ス A, prince コ-ソ ス -チ corporate system) 4.0 parts, Styrene-Butadiene latex (trade name: 2531-H, the JSR corporate system) 10 parts (all being converted into solid constituent), as the defoamer and the dyestuff of auxiliary agent, prepared final solid component concentration and be 50% coating fluid.
[preparation of surface layer coating fluid]
In plastic pigment (trade name: POT7099 as the pulpous state of pigment, grain diameter is 60nm, Japan ゼ オ Application system) in 100 part, add oxidized starch (trade name: prince エ-ス A, prince コ-ソ ス -チ corporate system) 2 parts, Styrene-Butadiene latex (trade name: 2531-H, the JSR corporate system) 5 parts (all being converted into solid constituent) and as the defoamer and the dyestuff of auxiliary agent prepared final solid component concentration and is 40% coating fluid.
[making of coated paper]
Be 1.30 by adjusting slurry network speed from imported materials than (hereinafter referred to as J/W), having produced the fiber orientation ratio, density is 0.75g/cm
3The high-quality body paper (grammes per square metre is 50g/m
2).Use the scraper plate coating machine to be coated with above-mentioned bottom coating fluid on the two sides of this body paper and make the dry weight of each face be 5g/m
2Thereby, be dried and be provided with priming coat.Then, on each priming coat, use the scraper plate coating machine to be coated with above-mentioned surface layer coating fluid and make the dry weight of each face be 2g/m
2Thereby, be dried and be provided with finishing coat.The coated paper that will obtain like this with line pressure 80kN/m under 35 ℃ of temperature passes in the supercalender, and having obtained density is 1.00g/cm
3Coated paper.
Embodiment 2
Make the grammes per square metre of the body paper that in embodiment 1, uses be 46g/m
2, and the coating weight of bottom coating fluid changed to 7g/m
2, in addition, operation has obtained coated paper similarly to Example 1.
Embodiment 3
Make the grammes per square metre of the body paper that in embodiment 1, uses be 54g/m
2, and the coating weight of bottom coating fluid changed to 3g/m
2, operation has similarly to Example 1 obtained coated paper in addition.
Embodiment 4
By adjusting J/W, the fiber orientation ratio of the body paper that will use in embodiment 1 changes to 1.50, and operation has similarly to Example 1 obtained coated paper in addition.
Embodiment 5
The pigment of the surface layer that will use in embodiment 1 changes to kaolin (trade name: カ オ グ ロ ス, 0.4 μ m, ヒ ユ-パ-corporate system), and operation has similarly to Example 1 obtained coated paper in addition.
Embodiment 6
At embodiment 1, replacing grain diameter is the plastic pigment (trade name: POT7099 of 60nm, Japan ゼ オ Application system), use the adhesive type pigment (trade name: S2577A of grain diameter as 250nm, the JSR system) is used as the pigment of finishing coat, operation has similarly to Example 1 obtained coated paper in addition.
Embodiment 7
The coating weight that makes finishing coat is 0.5g/m
2, and the grammes per square metre of body paper changed to 53g/m
2, in addition, operation has obtained coated paper similarly to Example 1.
Embodiment 8
For embodiment 1, the grammes per square metre of body paper is changed to 48g/m
2, the coating weight of finishing coat is changed to 3.0g/m
2, the pigment of bottom is changed to engineering level kaolin (trade name: Contour Xtreme, average grain particle diameter are 0.26 μ m, and aspect ratio is 33, イ メ リ ス corporate system), operation has similarly to Example 1 obtained coated paper in addition.
Embodiment 9
The engineering level kaolin (trade name: Contour1500 that in embodiment 1, use, the average grain particle diameter is 0.46 μ m, aspect ratio is 59, イ メ リ ス corporate system) 90 parts change to spherical particle (grain diameter are the precipitated calcium carbonate of 10 μ m, rice village lime industrial group system) 10 part, operation has similarly to Example 1 obtained coated paper in addition.
Comparative example 1
The pigment composition of the bottom coating fluid of embodiment 1 is changed to delaminated kaoline (trade name: CapimNP, average grain particle diameter are 0.75 μ m, and aspect ratio is 20, イ メ リ ス corporate system), and operation has similarly to Example 1 obtained coated paper in addition.
Comparative example 2
The pigment composition of the bottom coating fluid of embodiment 1 is changed to kaolin (trade name: CapimDG, average grain particle diameter are 0.6 μ m, and aspect ratio is 11, イ メ リ ス corporate system), and operation has similarly to Example 1 obtained coated paper in addition.
Comparative example 3
Replacing grain diameter is the plastic pigment (trade name: POT7099) of 60nm, the pigment composition of the surface layer coating fluid of embodiment 1 is changed to the plastic pigment (trade name: AE851) that grain diameter is 1 μ m, operation has similarly to Example 1 obtained coated paper in addition.
The quality evaluation of coated paper
The quality of each coated paper of in embodiment 1～9 and comparative example 1～3, obtaining that adopted following project appraisal.Only otherwise special record, estimate under 23 ℃, the environment of 50RH% and carry out.The results are shown in table 1～table 3.
[adopting subsidence style to measure the average grain particle diameter of pigment]
Use the セ デ イ グ ラ Off 5100 of U.S. マ イ Network ロ メ リ テ Star Network ス corporate system, measure the size distribution of pigment, obtain the average grain particle diameter suitable with 50 mass accumulation %.For the dispersible pigment dispersion of measuring usefulness, be 0.1% aqueous solution that adopts phosphate-based dispersant (), dilution is added 0.05% dispersant (Nankarin) and the graining paste of preparation with respect to pigment, and makes that the pigment solids constituent concentration is 5% to obtain.
[mensuration of the aspect ratio of pigment and shape are observed]
Under electron microscope, be amplified to 15000 times, carry out the observation of the mensuration and the shape of aspect ratio.
[density]
The coated paper after calender is handled and the density of body paper are measured according to the regulation of ISO 534:1988.
[mensuration of the glossiness of coated paper]
According to the TAPPI test method(s): T 480om-92, in incidence angle with to be subjected to firing angle be to measure glossiness under the conditions of 75 degree.Used analyzer: trade name GLOSS METER MODEL GM-26D (color research institute corporate system in the village).
[air permeability of coated paper is measured]
Utilize Wang Yan formula densometer to measure.
[the CD stiffness of paper is measured]
According to TAPPI T451, utilize the Clark analyzer to measure the stiffness of using horizontal (CD) of paper.
[mensuration of fiber orientation ratio]
As the fiber orientation determinator, use ultrasonic propagation velocity determinator (device form name SST: sonar, wild village Itochu system) to measure.
[instrumentation of the protuberance on coated paper surface]
Under electron microscope, be amplified to 100 times, carry out the instrumentation of the protuberance of coating surface, convert with every square centimeter number.
[printing of coated paper]
(pattern: ダ イ ヤ 4E4 type), use printing-ink (trade name: Values-G China ink S type, big Japanese ink chemical industrial company system), with print speed printing speed: 8000/hour are printed to utilize the offset press of Mitsubishi's system.
[walking (paper feed) when estimating printing]
Excellent: the adhesion to blanket takes place 0 time, and is no problem in the practicality, excellence.
Very: the adhesion to blanket takes place 1～3 time, but practical no problem.
Generally: the adhesion to blanket takes place 4 times～10 times, existing problems in the practicality.
Bad: the adhesion to blanket takes place more than 11 times, and existing problems are poor significantly in the practicality.
[ink setting evaluation]
Printing is after after 1 hour, with good quality paper and printing surface touching, estimate the transfer printing of printing ink with following metewand.
Excellent: can't see the printing ink transfer printing, no problem in the practicality, excellence.
Very: visible ink transfer printing a little, but practical no problem.
Generally: see the printing ink transfer printing continually, existing problems in the practicality.
Bad: see the printing ink transfer printing significantly, existing problems are poor significantly in the practicality.
[estimating the fold generation state of printing back sample]
Excellent: as not have the generation of fold, excellence.
Very: the generation of fold is seen on a little ground, but practical no problem.
Generally: can see the generation of fold, existing problems in the practicality.
Bad: as to see that significantly fold takes place, existing problems in the practicality.
Table 1
| Trade name | Composition | Shape | Grain diameter μ m | Aspect ratio |
| Contour1500 | Engineering level kaolin | Hexagonal is tabular | 0.46 | 59 |
| Contour Xtreme | Engineering level kaolin | Hexagonal is tabular | 0.26 | 33 |
| CapimNP | Delaminated kaoline | Hexagonal is tabular | 0.75 | 20 |
| CapimDG | Kaolin | Hexagonal is tabular | 0.60 | 11 |
Table 2
| Priming coat | Finishing coat | The blank sheet of paper quality | ||||||||
| Material | Coating weight | Material | Coating weight | Glossiness | Air permeability | The CD stiffness | The fiber orientation ratio | The protuberance number | ||
| g/m 2 | g/m 2 | ％ | Second | cm | Body paper | Coated article | Individual/mm 2 | |||
| Embodiment 1 | Contour1500 | 5 | POT7099 | 2 | 60 | 2500 | 16.0 | 1.30 | 1.25 | 0 |
| Embodiment 2 | Contour1500 | 7 | POT7099 | 2 | 60 | 3500 | 17.0 | 1.30 | 1.25 | 0 |
| Embodiment 3 | Contour1500 | 3 | POT7099 | 2 | 60 | 2000 | 14.0 | 1.30 | 1.25 | 0 |
| Embodiment 4 | Contour1500 | 5 | POT7099 | 2 | 60 | 2500 | 15.0 | 1.50 | 1.35 | 0 |
| Embodiment 5 | Contour1500 | 5 | POT7099 | 2 | 50 | 3000 | 16.0 | 1.30 | 1.26 | 0 |
| Embodiment 6 | Contour1500 | 5 | S2577A | 2 | 70 | 3500 | 16.0 | 1.30 | 1.25 | 0 |
| Embodiment 7 | Contour1500 | 5 | POT7099 | 0.5 | 48 | 1700 | 16.6 | 1.30 | 1.25 | 0 |
| Embodiment 8 | Contour1500 | 5 | POT7099 | 3 | 60 | 2500 | 15.0 | 1.30 | 1.25 | 0 |
| Embodiment 9 | Contour1500+ 10 μ spherical particles | 5 | POT7099 | 2 | 55 | 2000 | 15.5 | 1.30 | 1.25 | 300 |
| Comparative example 1 | CapimNP | 5 | POT7099 | 2 | 60 | 3500 | 12.0 | 1.30 | 1.26 | 0 |
| Comparative example 2 | CapimDG | 5 | POT7099 | 2 | 60 | 8000 | 11.0 | 1.30 | 1.24 | 0 |
| Comparative example 3 | Contour1500 | 5 | AE851 | 2 | 30 | 8000 | 16.0 | 1.30 | 1.24 | 0 |
Table 3
| Walking property | |||
| Adhesion to tube | Ink setting | Fold | |
| Embodiment 1 | Very | Excellent | Excellent |
| Embodiment 2 | Excellent | Very | Excellent |
| Embodiment 3 | Very | Excellent | Excellent |
| Embodiment 4 | Very | Excellent | Very |
| Embodiment 5 | Very | Very | Excellent |
| Embodiment 6 | Very | Excellent | Excellent |
| Embodiment 7 | Very | Excellent | Excellent |
| Embodiment 8 | Very | Excellent | Excellent |
| Embodiment 9 | Very | Excellent | Excellent |
| Comparative example 1 | Bad | Very | Very |
| Comparative example 2 | Bad | Bad | Very |
| Comparative example 3 | Bad | Bad | Very |
Utilizability on the industry
Coated paper of the present invention is when the offset press printing of adopting large format, adhesion and fold to printing cylinder can not occur, and ink setting is good, and presswork improves, and the grammes per square metre that the blank sheet of paper glossiness is high is 80g/m2Following coated paper is extremely useful in practical.
In addition, in the specification and claims " more than " and " following " comprise given figure.
Claims (9)
1. coated paper, be that to be provided with on the one side at least of body paper more than 2 layers be the coated paper of the coating of principal component with pigment and adhesive, it is characterized in that, with priming coat that body paper contacts in, contain the flat pigment that satisfies following condition (1) and (2) more than 50 parts by mass with respect to whole pigment 100 parts by mass, and the Clark stiffness of its CD direction of above-mentioned coated paper is more than the 14cm, and its surperficial blank sheet of paper glossiness is more than 45%
(1) the average grain particle diameter that adopts subsidence style to measure: 0.2～5.0 μ m;
(2) aspect ratio (major diameter/thickness): 25～120.
2. coated paper according to claim 1, wherein, above-mentioned flat pigment is engineering level kaolin.
3. coated paper according to claim 1 and 2, wherein, the air permeability of above-mentioned coated paper is below 7000 seconds.
4. according to wantonly 1 described coated paper of claim 1～3, wherein, the adhesive ingredients of above-mentioned priming coat with respect to pigment composition 100 parts by mass that contained in the priming coat, is 5～30 parts by mass.
5. according to wantonly 1 described coated paper of claim 1～4, wherein, the fiber orientation of above-mentioned body paper ratio is 1.00～1.50.
6. according to wantonly 1 described coated paper of claim 1～5, wherein, be 1.00～1.50 from the fiber orientation ratio of the surface measurements of above-mentioned coated paper.
7. according to wantonly 1 described coated paper of claim 1～6, wherein, the grammes per square metre of above-mentioned coated paper is 35～80g/m
2
8. according to wantonly 1 described coated paper of claim 1～7, wherein, contain 0.5g/m in the finishing coat on above-mentioned priming coat
2Above particle diameter is the following subparticle of 500nm.
9. according to wantonly 1 described coated paper of claim 1～8, wherein, contain the spherical particle that the average grain particle diameter is 1～50 μ m in the above-mentioned priming coat.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005259959 | 2005-09-07 | ||
| JP259959/2005 | 2005-09-07 | ||
| JP058675/2006 | 2006-03-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1928225A true CN1928225A (en) | 2007-03-14 |
Family
ID=37858337
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200610151421 Pending CN1928225A (en) | 2005-09-07 | 2006-09-07 | Coated paper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1928225A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102310675A (en) * | 2010-06-29 | 2012-01-11 | 佳能株式会社 | Ink jet recording medium |
| 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 |
| CN107059487A (en) * | 2017-03-22 | 2017-08-18 | 山东东宇鸿翔装饰材料有限公司 | The preparation method of 30 grams of facing papers |
-
2006
- 2006-09-07 CN CN 200610151421 patent/CN1928225A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102310675A (en) * | 2010-06-29 | 2012-01-11 | 佳能株式会社 | Ink jet recording medium |
| CN102310675B (en) * | 2010-06-29 | 2015-04-08 | 佳能株式会社 | Ink jet recording medium |
| 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 |
| CN107059487A (en) * | 2017-03-22 | 2017-08-18 | 山东东宇鸿翔装饰材料有限公司 | The preparation method of 30 grams of facing papers |
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