CN101725081B - Coating paper for printing - Google Patents

Abstract

The invention provides a coating paper for printing obtained by a twin-wire former type paper machine with excellent texture, paper interlayer intensity, rigidity and printing aptitude, characterized in that: more than 50 weight% of bleached pulp uses eucalypt material or acacia material as the raw material and the bleached pulp is pulped by gradually adding cooking liquor and subjected to many segments of bleaching processing steps. The coating paper for printing is produced by the following steps: forming a wet paper; squeezing the wet paper; drying the squeezed paper; setting more than one paint coating layer. The weighted mean fiber length of the dissociated paper pulp is 0.6-2.0mm and the fiber length distribution coefficient is 1.5-4.0 and the aspect ratio of the tensile strength of the coating paper is below 3.0.

Description

Coated paper for printing

Technical field

The present invention relates to coated paper for printing.Especially, the coated paper for printing that relates to intensity between quality, ply of paper, rigidity, printability excellence.

The application advocates the priority that the spy in japanese publication was willing to 2008-275087 number application based on October 27th, 2008, quotes its content here.

Background technology

Usually; Coated paper for printing is that coating is the coating fluid of principal component with pigment and adhesive on body paper; Drying is made then; According to the coating weight of coating fluid, the processing method of coated paper, can be divided into casting and be coated with coated paper (cast-co ated paper), art paper (art paper), coated paper (coated paper), light weight coated paper (lightweight coated paper) etc.These coated papers are widely used as commercial printed article, the perhaps publication such as books, magazine used such as handbill, brochure, placard after implementing polychrome printing or single color printing.In recent years, in the visualization of printed article, color development, the requirement of the high quality of coated paper for printing is also improved gradually, think blank sheet of paper quality such as blank sheet of paper glossiness, smoothness, whiteness, and printing quality such as printing smooth property is very important.In addition, particularly commerce with printed article in because handbill, brochure etc. are the purposes as mass media, expectation obtains the good handbill of printing effect, brochure etc. with low cost.And then, for laborsavingization with reduce manufacturing cost and efficient activity that the wide cutization of seeking paper machine and high speed bring.

As the manufacturing approach of coated paper for printing, have and copy paper and be coated on outer (off machine) mode of machine that different operations carries out, in a machine, copy (on machine) mode in the machine of paper and coating simultaneously.Outside machine in mode, the machine in this dual mode of mode, as a high speed measure of wet end (wire part), all have as improve the dehydration property good plan of wet end, throw the net the former of the folder net type of the raw material that comes out from head box clamping immediately with 2.Yet the raw material that comes out from head box carries out powerful dehydration on the net two sides immediately, exist the peel strength of thickness direction to reduce, yield rate reduces, because yield rate reduces problems such as causing producing pinprick.In addition; Since the raw material that comes out from head box immediately by 2 throw the net fetter; Exist because fiber orientation property former thereby in the problems such as deterioration that fold (below be called wheel change the offset printing fold) takes place a little less than the viscosity of CD direction, when web offset printing (web offsetprinting); But, the method that is used to address these problems has been disclosed.

Particularly, the technology that dehydrating amount ratio (online/off line) when the material concentration up between net reaches particular value when being controlled at the body paper of the printing coated paper of manufacturing paper with pulp improves anti-foaming characteristic is disclosed, but the peel strength of thickness direction not enough (patent documentation 1).

Disclose through utilizing the size press device on the body paper of copying paper with Aladdin former type paper machine, to be coated with aqueous binder; Make anti-foaming and fit the method for the excellent web offset printing of property with coated paper; Though this method has suppressed the generation of bubbling, it changes the inhibition effect not enough (patent documentation 2) of offset printing fold to producing wheel.

Proposed to eliminate or alleviate the technology of wheel commentaries on classics offset printing fold through limit the interlaminar strength that batches moisture and body paper with specific relational expression; In order to satisfy this relational expression; The moisture of coated paper is reduced; But moisture reduce may cause after folding process in the phenomenon of generation coated paper skin breakage, promptly said " blister cracking " (patent documentation 3).

The method of property is fitted in anti-foaming when obtaining web offset printing; Former studies improve the method for the interlaminar strength of body paper; As one of them method; Proposed to make cationic modified starch to immerse the method that improves the bonding strength between paper pulp fiber in the ply of paper, but this method and insufficient (patent documentation 4).

As the method for the DIMENSIONAL STABILITY that improves printing, the right property of anti-foaming, disclose and used the enzyme that does not have the filter paper degrading activity to carry out Treatment Technology, but its DIMENSIONAL STABILITY, property all not enough (patent documentation 5,6) is fitted in anti-foaming.

As improving the method that on the body paper that uses after Aladdin former type paper machine is copied paper, is provided with the flatness of the printing coated paper that is coated with the thing that is combined, the right property of anti-foaming, rigidity; Disclose and used enzyme to handle the technology of the paper pulp that forms, but it can not improve above-mentioned three characteristics (patent documentation 7) simultaneously with xylan degrading activity.

As the technology of improving intensity between quality, ply of paper; Proposed following ply of paper and formed device: made originally flatly advancing of upper wire loop with an off line opposite side group that engages; And in this upper wire loop configuration forming table equipment; To dewater to copy from the material liquid of secondary headbox ejection and close, and copy and close and individual layer is copied and closed all and can carry out, but there be the not enough problem of the rigidity of CD direction (patent documentation 8) in this technology.

The technology that reduces as the intensity of the thickness direction of the paper after preventing to manufacture paper with pulp; Proposed following technology: dehydration inhibition scraper (blade) has the planar portions of supporting network and constitutes with respect to the net that is arranged on aforementioned planar portions goes into the inclined plane of the wire side of side towards the wedge-like space that net direct of travel upstream side broadens; Aforementioned inclined plane and aforementioned net angulation suppress scraper along with the aforementioned dehydration near the flow direction downstream side of aforementioned paper material liquid and diminish gradually, but this effect is not given full play of (patent documentation 9).

Poor in order to improve in the table that produces owing to shoe press; Disclose body paper and/or be provided with paper that primary coat is coated with tegillum after handling, the method that is coated with tegillum has been set, in order to obtain low-density coated paper through soft press-polishing machine; Can not carry out strong processing; In addition, there is the problem in the operations such as striped increase, can not be improved to enough levels (patent documentation 10).

Disclose in the twin wire former paper machine of folder net type, utilized the wet pressing device of Aladdin former portion, according to the rules ratio dehydration, the technology of smoothing from the two sides of body paper.Coated paper is used in hectographic printing through this method obtains, owing to double side dewatering from body paper, so the minimizing of the microfibre of ply of paper central portion, microfibre accumulates in the paper skin section more, and the characteristic difference on two sides tails off in the table.Yet microfibre may go out from paper top layer surface current, has the problem (patent documentation 11) of microfibre quantity with respect to the overall minimizing of paper.

Therefore, strongly need the characteristic that can run up of performance Aladdin former type paper machine, and the coated paper for printing that obtains fine texture, high rigidity, has printability.

Patent documentation 1: japanese kokai publication hei 11-100788 communique

Patent documentation 2: japanese kokai publication hei 10-46492 communique

Patent documentation 3: japanese kokai publication hei 09-291490 communique

Patent documentation 4: No. 3744115 communique of Japan Patent

Patent documentation 5: japanese kokai publication hei 10-46493 communique

Patent documentation 6: japanese kokai publication hei 10-46495 communique

Patent documentation 7: japanese kokai publication hei 10-53997 communique

Patent documentation 8: japanese kokai publication hei 06-341091 communique

Patent documentation 9: japanese kokai publication hei 10-292284 communique

Patent documentation 10: japanese kokai publication hei 11-1891 communique

Patent documentation 11: japanese kokai publication hei 11-100789 communique

Summary of the invention

Invention will solve asks grain husk

The present invention provides the paper pulp that obtained by specific seeds, specific paper pulp rerum natura, specific bleaching is used Aladdin former type paper machine and the fine texture that obtains and interlaminar strength is strong, rigidity, coated paper for printing that printability is excellent.

The scheme that is used to deal with problems

The present invention includes following each invention:

(1) a kind of coated paper for printing; It is characterized in that; 50 quality % of the employed bleached pulp of paper stock are above to be raw material with eucalyptus material or Acacia material; The cooking process that this bleached pulp adds cooking liquor through gradation makes by paper pulpization and then through the multistage bleaching treatment process; Wherein this coated paper for printing is processed via following operation: paper stock is ejected between 2 nets that constitute the loop from head box, and forms the operation of l Water Paper at the wet end of the folder net forming that forms ply of paper of dewatering with forming rolls and/or shaping boots; In press section, the operation of utilizing the wet pressing device of the boots formula more than 1 l Water Paper to be pressed water; In drying section, the dry initial stage before surface treatment is utilized the operation of the dry l Water Paper of single hop arrange type drier at least; And use transfer printing type size press device to carry out surface treatment, at least one face of the body paper that obtains through surface treatment, being provided with more than 1 layer with pigment and adhesive is the operation of the pigment application layer of principal component.The weight average fiber length disassociation paper pulp that the paper pulp dissociation methods that adopts JISP 8220:1998 record obtains aforementioned coated paper for printing disassociation, that record according to the paper pulp fiber length test method of the automatic instrumentation method of optics of JAPAN TAPPI No.52:2000 defined is that 0.6～2.0mm, fiber length distribution coefficient are 1.5～4.0, and the aspect ratio of the tensile strength of the aforementioned coated paper for printing that records according to JISP 8113:2006 is below 3.0.

(2) according to (1) described coated paper for printing, the aspect ratio of the tensile strength of aforementioned coated paper for printing is 1.3～3.0.

(3) according to (1) or (2) described coated paper for printing, the final nip of aforementioned press section is the roll forming squeezing, and its leading portion is a shoe press.

(4) according to each described coated paper for printing of (1)～(3), the freeness that aforementioned disassociation paper pulp records according to JIS P 8121:1995 is 250～500ml.

(5) each described coated paper for printing of basis (1)～(4); Aforementioned body paper contains 1～30 quality % filler, and the apparent specific gravity that this filler records according to JIS K 6220-1:2001 is below 0.5 and according to the molar absorption coefficient of Lambert-Beer's law to be more than 5.0 and average grain diameter is more than the 1 μ m.

The invention effect

Coated paper for printing of the present invention is to use the folder net type former will be by specific seeds, specific disassociation paper pulp rerum natura; The paper pulp that specific bleaching obtains is manufactured paper with pulp and coating layer is set and the coated paper that obtains, and strong, the rigidity of intensity between its fine texture and ply of paper, printability are excellent.

The specific embodiment

Be described in detail the present invention below.

The raw material of paper pulp used in the present invention can be any one of broad-leaved wood, coniferous wood, non-timber, but must be to be the material of raw material with eucalyptus material or Acacia material more than the 50 quality % of the employed paper pulp of body paper.As the eucalyptus material; Can enumerate E.camadulensis, E.citriodora, E.deglupta, E.globulus, E.grandis, E.maculata, E.punctata, E.saligna, E.terelicornis, E.urophylla etc.; Perhaps their hybrid; In addition; As the Acacia material, can enumerate A.aulacocarpa, A.auriculiformis, A.catechu, A.crassicarpa, A.decurrens, A.holosericea, A.leptocarpa, A.maidenii, A.mangium, A.mearnsii, A.melanoxylon, A.neriifolia, A.silvestris etc., perhaps their hybrid.The fiber width of paper pulp that with eucalyptus material, Acacia material is raw material is little, is to be used to embody the requisite material of paper rerum natura of the present invention.

As the cooking process that is used to obtain paper pulp used in the present invention; Can use known cooking process such as sulphate cook (kraft cooking), polysulfide boiling, caustic soda boiling, alkaline sulfite boiling, carry out boiling but must the cooking liquor gradation be added.Because add cooking liquor through gradation; Can the alkali concn of whole digestion process be suppressed to lower; Can suppress the stripping of hemicellulose in the timber; As a result, can obtain the high paper pulp of hemicellulose containing ratio, using the high paper pulp of hemicellulose amount also is to embody one of requisite item of paper rerum natura of the present invention.So long as the cooking process of cooking liquor is added in gradation; Not restriction especially; The energy that uses when the boiling is less from having, the good so subsidiary effect of bleaching property of the paper pulp that makes is considered the suitable cooking process such as Lo-Solids method, Compact cooking process, Kobudomari cooking process that use.

For example, when using the sulphate cook method, the sulphidity of cooking liquor is 5～75%; Be preferably 15～45%, every ovendriedwood quality, its effective alkali interpolation rate is 5～30 quality %; Be preferably 10～25 quality %; Boiling temperature is 130～170 ℃, and the boiling mode can be any one of continuously cooking method or batch (-type) cooking process, does not have special demands.

During boiling; In the cooking liquor that uses, can add as the known cyclic ketone compound of digesting assistant such as benzoquinones, naphthoquinones, anthraquinone, anthrone, phenanthrenequione; And the nuclear of the alkyl of aforementioned quinone based compound, amino etc. replaces body, or the quinhydrones based compound as the reduced form anthrahydroquinone of aforementioned quinone based compound, the stable compound 9 as the intermediate of anthraquinone synthetic method that obtains through the Diels-Alder method; 10-diketone hydrogen anthracene (9; 10-diketohydroanthracene) a kind in the compound etc. or more than 2 kinds, every ovendriedwood quality, its interpolation rate are 0.001～1.0 quality %.

Among the present invention, wash, roughly select and selected operation, through known oxygen-alkali bleaching method delignification through the unbleached pulp process that known cooking process obtains.Why adopting oxygen-alkali bleaching method delignification, is because can reduce the use amount of bleaching agent in the multistage bleaching operation afterwards, makes the reduction of pulp quality rest on irreducible minimum.Oxygen-alkali bleaching method used in the present invention can directly be suitable for known in concentration method or high concentration method, now normally used is that the middle concentration method that carries out for 8～15% times is preferred at pulp density.

As the alkali in the oxygen-alkali bleaching method of concentration method in the aforementioned employing; Can use the white liquid of NBSK (kraft white liq uor) of caustic soda or oxidation; As oxygen; The oxygen that can use the oxygen that obtains by separation by deep refrigeration, obtain by P SA (transformation absorption, PressureSwing Adsorption), the oxygen that obtains by VSA (Vacuum Pressure Swing Adsorption, VacuumSwing Adsorption) etc.In the pulp of the middle concentration during aforementioned oxygen and alkali added in the concentration blender, after fully mixing, be transported to and in adding the reaction tower that the mixture of depressing paper pulp, oxygen and alkali keeps certain hour, carry out delignification.

Every absolute dried paper pulp quality, the interpolation rate of oxygen are 0.5～3 quality %, and alkali interpolation rate is 0.5～4 quality %, and reaction temperature is 80～120 ℃, and the reaction time is 15～100 minutes, and pulp density is 8～15%, and other conditions can be used known condition.In the present invention, embodiment preferred is that continuous several times is carried out above-mentioned oxygen-alkali bleaching, delignification as much as possible in the oxygen-alkali bleaching operation.

Then, the paper pulp of having implemented oxygen-alkali bleaching is delivered to washing procedure.Paper pulp is fed to the multistage bleaching operation after washing.

The multistage bleaching operation that is used to obtain bleached pulp used in the present invention is preferably used ozone bleaching section (Z).This be because, through using the ozone bleaching section, can decompose the hexenuronic acid that contains in a large number in the paper pulp that is derived from eucalyptus material, Acacia material, can suppress to result from hexenuronic acid paper pulp return look.The treatment conditions of ozone bleaching section are restriction especially not, but owing to make the ozone overreaction can damage pulp strength, so every absolute dried paper pulp quality, the interpolation rate of ozone is preferably 0.1～1.0%, further is suitably 0.3～0.7%.Treatment temperature is 10～100 ℃, is preferably 20～70 ℃, and the processing time is 1 second～60 minutes, is preferably 10 seconds～5 minutes, and handling pH is 1.5～7, is preferably 2～4.Pulp density in the ozone bleaching section can be middle concentration, also can be high concentration, not restriction.In addition, if desired, also can be also with chlorine dioxide, other bleaching agent.

Operable bleaching section in the multistage bleaching operation of the present invention is had no particular limits, can use known bleaching section.As known bleaching section, can enumerate ClO 2 bleaching section (D), alkaline extraction section (E), oxygen bleaching section (O), hydrogen peroxide bleaching section (P), peroxy acid bleach section (PA), acid elution section (a), acid treatment section (A) etc.If enumerate the words of an example of multistage bleaching operation; Can enumerate Z-E-P-D, Z-E-D-P, Z-E-P-AP, A-Z-E-P-D, A-Z-E-D-P, A-Z-E-P-AP, a-Z-E-P-D, a-Z-E-D-P, a-Z-E-P-AP, Z/D-E-P-D, Z/D-E-D-P, Z/D-E-P-AP, A-ZD-E-P-D, A-Z/D-E-D-P, A-Z/D-E-P-AP, a-Z/D-E-P-D, a-Z/D-E-D-P, a-Z/D-E-P-AP, Z-EO-P-D, Z-EO-D-P, Z-EO-P-AP, A-Z-EO-P-D, A-Z-EO-D-P, A-Z-EO-P-AP, a-Z-EO-P-D, a-Z-EO-D-P, a-Z-EO-P-AP, Z/D-EO-P-D, Z/D-EO-D-P, Z/D-EO-P-AP, A-ZD-EO-P-D, A-Z/D-EO-D-P, A-Z/D-EO-P-AP, a-Z/D-EO-P-D, a-Z/D-EO-D-P, a-Z/D-EO-P-AP, D-E-P-D, D-E-D-P, D-E-P-AP, A-D-E-P-D, A-D-E-D-P, A-D-E-P-AP, a-D-E-P-D, a-D-E-D-P, a-D-E-P-AP, D-EO-P-D, D-EO-D-P, D-EO-P-AP, A-D-EO-P-D, A-D-EO-D-P, A-D-EO-P-AP, a-D-EO-P-D, a-D-EO-D-P, a-D-EO-P-AP etc., also can washing section be set at connecting portion.In addition, can also further add bleaching section or be combined in the aforementioned bleaching section other bleaching sections and usefulness, limit especially.Paper pulp behind the multistage bleaching is delivered in pulping process or the machine hand's preface.

In the present invention; As wet end; Machine is had no particular limits; Utilization develops in order under the high speed more than 1000m/ minute, to carry out operation, throw the net the former of the folder net type of the raw material that comes out from head box clamping immediately with 2, and then utilizes suction scraper, arc boots (Curved shoe) and the roller initial stage of carrying out to dewater.Preferably utilize the good forming rolls of yield rate to carry out the initial stage dehydration.In addition, as press section,, must have the wide cut nip of 1 above boots formula in order to improve the aridity of paper leaf (sheet).Because in the former of folder net type, the raw material that comes out from head box is immediately by 2 clampings of throwing the net, and from the two wire sides dehydration possibility that becomes, can remedy the deficiency of the water separation capability that high speed brings.In addition, along with losing of the Free Surface of online raw material, can change the size of the dewatering pressure on the raw material that is applied between net, the quality of body paper also can be greatly improved.

Yet the raw material of the low concentration that comes out from head box carries out powerful dehydration in two wire side sides immediately, exists the retention that the l Water Paper top layer takes place easily to reduce, and in the reduction of the peel strength of the thickness direction of paper, the such problem of orientation grow of fiber.Therefore; Adopt the coated paper of the body paper that existing fourdriner forming device etc. obtains to compare with having used, use to be employed in paper machine that wet end the has such folder net type former coated paper for printing that the body paper that obtains makes of manufacturing paper with pulp and when using the printing of web offset printing machine, to have easy generation foaming fault, the such shortcoming of fold fault.

In addition; Wet pressing device with wide cut nip of boots formula is the dehydration slowly under the wide cut, and fiber tails off to dehydration the mobile of side during dehydration, compares with existing roll-type squeezing; Therefore the tendency that the density contrast of the existence outside and central part diminishes has surface strength, the rigidity shortcoming of reduction easily.

The present invention has found following method: through using above-mentioned specific raw material; The bleached pulp that uses aforesaid cooking process and bleaching process to make; The weight average fiber length and the fiber length distribution coefficient of the disassociation paper pulp that adjusting obtains the disassociation of aforementioned coated paper for printing; Thereby performance utilizes the former of folder net type and has the characteristic that the wet pressing device of the wide cut nip of boots formula can run up, and the shortcoming of improving the former of folder net type improves promptly that retention reduces, reduces in the peel strength of the thickness direction of paper, the method for fiber orientation property; Shortcoming that find to improve the wet pressing device of the wide cut nip with boots formula is in addition promptly improved the method that surface strength, rigidity reduce.

That is to say; The characteristic that can run up for the former of bringing into play folder net type and wet pressing device with wide cut nip of boots formula; The shortcoming of improving aforementioned former and aforementioned wet pressing is promptly improved retention and is reduced, reduces and fiber orientation property, surface strength reduce, rigidity reduces in the peel strength of the thickness direction of paper; The weight average fiber length of the disassociation paper pulp that the disassociation of aforementioned coated paper for printing is obtained is necessary for 0.6～2.0mm, is preferably 0.6～1.5mm.Further 0.6～1.2mm more preferably extremely is preferably 0.6～1.0mm.When the weight average fiber length of disassociation paper pulp was lower than 0.6mm, the fiber combining area was little, and the intensity that the former of use folder net type obtains becomes not enough, peels off easily between ply of paper.

On the contrary, when the weight average fiber length of disassociation paper pulp surpassed 2.0mm, the quality variation when carrying out web offset printing, was easy to generate the fold that shrinkage stress brought that is caused by heated-air drying.

The fiber length distribution coefficient of the disassociation paper pulp that obtains of the aforementioned coated paper for printing of disassociation is necessary for 1.5～4.0 among the present invention, is preferably 1.5～3.0, and further more preferably 1.5～2.5, extremely be preferably 1.5～2.0.The fiber length distribution coefficient of disassociation paper pulp is lower than at 1.5 o'clock, and the fiber that can strengthen the different fibre lengths that combine between ply of paper tails off, and the fiber combining area diminishes, and it is not enough that intensity becomes, and therefore, becomes between ply of paper and peel off easily.

In addition, the fiber length distribution coefficient of disassociation paper pulp surpasses at 4.0 o'clock, and it is many that long fiber and microfibre become, and therefore the quality variation, when carrying out web offset printing, is easy to generate the fold that shrinkage stress brought that is caused by heated-air drying.

Here, the fiber length distribution coefficient be weight average fiber length (W) divided by the numerical value that number average fiber length (M) obtains, be the value of trying to achieve with following formula.

Fiber length distribution coefficient=weight average fiber length (W)/number average fiber length (M)

It shows that the fiber length distribution coefficient is big more, and then the width of fiber length distribution is wide more; The fiber length distribution coefficient is more little, and then the width of fiber length distribution is narrow more.In addition, weight average fiber length, number average fiber length are the values that adopts the automatic instrumentation method of optics of JAPANTAPPI No.52:2000 defined to record.

Coated paper for printing of the present invention, the disassociation paper pulp that the paper pulp dissociation methods disassociation of being put down in writing according to JI S P 8220:1998 obtains is preferably 250～500ml according to the freeness that JIS P 8121:1995 records, more preferably 300～400ml.

When the freeness of disassociation paper pulp was lower than 250ml, body paper was made up of the weak agglomerate of the paper pulp fiber of aforementioned coated paper, and interfibrous adhesion is little, becomes between ply of paper and peels off easily.In addition, when the freeness of disassociation paper pulp surpasses 500ml, when carrying out web offset printing, be easy to generate the fold that shrinkage stress brought that causes by heated-air drying.This be because, when the freeness of the disassociation paper pulp of manufacturing paper with pulp surpassed the body paper of 500ml, the paper pulp fiber in the body paper can not disperse equably, body paper is made up of the strong aggregation of paper pulp fiber, quality is poor, heated-air drying causes producing shrinks unevenly, so is easy to generate fold.

Weight average fiber length, fiber length distribution coefficient, the freeness of the paper pulp that the weight average fiber length of the disassociation paper pulp that is obtained by above-mentioned coated paper for printing, fiber length distribution coefficient, freeness are not necessarily used when making body paper are consistent.Its former because: when making body paper; The part of microfibre breaks away from from mesh or net; Coherent condition between paper pulp fiber is owing to the difference of wet end, press section, drying section (drying process) condition changes, in addition in order to improve the intensity between ply of paper, perhaps in order to improve yield rate, quality; In the preparation section of delivering to before the wet end, adopt methods of beating and/or add and add size and/or the shape that reagent is adjusted the piece that forms between paper pulp fiber in various.

Because weight average fiber length, fiber length distribution coefficient, the freeness of the disassociation paper pulp that will be obtained by aforementioned coated paper for printing have been adjusted to specific scope, intensity is strong between the ply of paper of the body paper that the present invention uses, and rigidity, printability are excellent.

The manufacturing of body paper

The characteristic that can run up for the former of bringing into play folder net type and wet pressing device with wide cut nip of boots formula; The shortcoming of improving the former of folder net type improves promptly that retention reduces, reduces in the peel strength of the thickness direction of paper, fiber orientation property; The shortcoming of improving the wet pressing device of the wide cut nip with boots formula is in addition promptly improved surface strength, rigidity reduces; In the body paper that the present invention uses, weight average fiber length, fiber length distribution coefficient, the freeness of the disassociation paper pulp that the disassociation coated paper for printing is obtained control to above-mentioned particular range.Particularly, can adopt following method to copy paper and make.

In the present invention; In order to adjust freeness, weight average fiber length, the fiber length distribution coefficient that makes coated paper for printing in water, disperse, dissociate the disassociation paper pulp that obtains again, on the basis of the weight average fiber length of having held the paper pulp that uses as raw material and fiber length distribution coefficient, cooperate.In addition, in various, add in the method for using of reagent and also adjusted freeness, weight average fiber length, fiber length distribution coefficient.Further, also can adjust weight average fiber length, fiber length distribution coefficient, freeness through methods of beating.

As the paper pulp as raw material, the weight average fiber length that preferably cooperates 50～100 quality % is that 0.5～1.3mm, fiber length distribution coefficient are 1.2～3.5 paper pulp.The weight average fiber length of 50～100 quality % of the total paper pulp of preferred cooperation is 0.5～1.0mm, and the fiber length distribution coefficient is 1.2～2.2 paper pulp.Further, the above-mentioned paper pulp that more preferably cooperates 80～100 quality %.

As the interior reagent that adds, preferably using the strong polyacrylamide of cohesive force is the agent of paper power.More preferably in the preceding interpolation of the fan pump of being sheared (fan pump).

For methods of beating; As long as the freeness that can obtain stipulating, fiber length distribution coefficient, weight average fiber length; ((DF), double disc refiner arbitrary beaters such as (DDR), the preferred compositions shiny beating is adjusted weight average fiber length and fiber length distribution coefficient with the cutting making beating can to use beater, jordan mill (Jordan), disc mill.Especially, preferred compositions is used shiny beating that cutter wide (bladewidth) and the little beater bar of groove width carry out and is used the wide and big cutting of groove width of cutter to pull an oar to adjust weight average fiber length and fiber length distribution coefficient.In addition, for the degree of making beating, as long as can obtain specific fibre distribution of lengths coefficient, weight average fiber length, not restriction is especially fitted the property consideration from copying paper, and preferably carrying out freeness is the processing about 270～480ml.

The aspect ratio of the tensile strength that need coated paper for printing of the present invention be recorded based on JIS P 8113:2006 is adjusted to below 3.0.The preferable range of the aspect ratio of tensile strength is 1.3～3.0.More preferably 1.3～2.5.This be because; The aspect ratio of tensile strength was above 3.0 o'clock; The fiber of the body paper of formation coated paper for printing is random orientation fully; Reduce in horizontal rigidity, lack and suppress the effect of the dry convergent force of coated paper for printing when carrying out web offset printing, also lack and suppress the effect that fold produces to horizontal propagation.

Here, the fiber orientation of body paper is meant, paper pulp fiber flow out to paper machine online, dehydration, form in the process of ply of paper, the paper pulp fiber longshore current goes out the tendency of (indulge) direction arrangement.That is, because paper stock flows out at a high speed on the net, dewaters when copying paper, vertically the fiber of (flow direction of raw material on the paper machine) orientation becomes many, compares with horizontal (width), and tensile strength, rigidity etc. become quite strong longitudinally, perhaps uprise.The dry contraction strain of difference in length and breadth (anisotropy) paper pulp fiber when becoming web offset printing of such body paper becomes a reason of undulate fold.

Usually, the method as the fiber orientation of measuring paper etc. has for example mechanics fracture strength method, dilatometry, X-ray diffraction method, supercritical ultrasonics technology, microwave method, NMR method, polarized fluorescence method, dielectric determination method etc.The present invention adopts mechanics fracture strength method, uses " RTC-1210A " of for example ORIENTEC Co.LTD production to measure tensile strength and horizontal tensile strength longitudinally, estimates the randomness of fiber orientation through its ratio.The aspect ratio of this tensile strength is 1.0 o'clock, and fiber becomes random orientation fully, but when the machine of reality is copied paper, the some fibre orientation can be arranged all, can not be for below 1.0.

On the other hand, owing to the copy paper slip spare of fiber orientation by paper pulp that uses and machine determines, therefore, need make the operation on the machine proper.As admissible method, can enumerate the ratio (J/W than) of the inflow velocity of optimizing machine speed, fiber slurry jet flow (suspension jet) and net spee etc., configuration and regulate suction scraper and arc boots and roller etc.Further, the running of the paper machine speed than follow-up usually is fast slightly, on one side towards the reel stretching paper paper of manufacturing paper with pulp on one side.If this speed difference is bigger, paper pulp fiber streamwise orientation is so the ratio Vr/Vw of the rotary speed (Vw) of the rotary speed (Vr) of preferred reel and net is 1.02～1.07.Through use in these methods 1 or make up 2 with on control tensile strength aspect ratio be below 3.0.

Coated paper for printing of the present invention adopts web offset printing, as the method that the wheel that suppresses under this situation changes offset printing fold, foaming, finds that the weight average fiber length of the disassociation paper pulp that the above-mentioned coated paper for printing of control disassociation obtains is 0.6～2.0mm; The fiber length distribution coefficient is 1.5～4.0; In addition, the aspect ratio of control tensile strength is below 3.0, and at the inner filler with specific composition, rerum natura that cooperates of the ply of paper of body paper; Between paper pulp fiber, form the space thus; When improving aeration, also can stop fiber combining, wheel be can more effectively suppress and offset printing fold, foaming changeed.

As the filler that adds in the body paper; Not restriction especially; For example can enumerate powdered whiting, precipitated calcium carbonate, calcium sulfite, gypsum, talcum, kaolin, burn till organic pigments such as inorganic pigments such as kaolin, delaminated kaoline, hydrosilicate, diatomite, magnesium carbonate, brium carbonate, zinc oxide, silica, titanium dioxide, aluminium hydroxide, calcium hydroxide, magnesium hydroxide, zinc hydroxide, urea formalin resin particle, small hollow particle etc., but also can reuse the filler that old paper, broken paper etc. are contained.Filler also can mix use more than 2 kinds.

In above-mentioned filler; Preferred use that " rubber is with compounding ingredient-test method-the 1st one: the apparent specific gravity that generally " records is below 0.5 according to JIS K 6220-1:2001; And the molar absorption coefficient according to Lambert-Beer's law is more than 5.0; And the average grain diameter that adopts laser diffraction type size distribution meter (trade name: " MT3000 ", (strain) day machine dress system) to record is the above filler of 1 μ m.This be because; The weight average fiber length of the disassociation paper pulp that the above-mentioned coated paper for printing of control disassociation obtains is 0.6～2.0mm; The fiber length distribution coefficient is 1.5～4.0, and between this paper pulp fiber, disposes filler, can stop the localized agglomeration between paper pulp fiber effectively; Can further reduce wheel thus and change the offset printing fold, and can improve the opacity when constituting body paper.As preferred scope, preferred especially apparent specific gravity is below 0.4, and molar absorption coefficient is more than 6.0, and average grain diameter is the above fillers of 2 μ m.As such filler, can enumerate for example hydrosilicate (amorphous silica such as white carbon) etc.

This is because the average grain diameter of above-mentioned filler is lower than 1 μ m, or apparent specific gravity surpasses at 0.5 o'clock, the effect that the wheel that possibly be difficult to improve changes the offset printing fold.In addition, molar absorption coefficient is lower than at 5.0 o'clock, the improving effect and may become insufficient of opacity.Here, according to Lambert-Beer's law, the incident light intensity is I ₀, the transmission light intensity is I, the thickness of absorbing material layer is d, when the concentration of absorbing material is c, with lo g ₁₀(I ₀/ I)=and ε cd representes that the ε here is called molar absorption coefficient, and aforementioned molar absorption coefficient is high more, and opacity is high more.

The use level of filler is added with the scope of 1～30 quality %, more preferably 1～20 quality %.In addition, when the use level of filler is lower than 1 quality %, stop the effect that combines between paper pulp fiber to reduce, be difficult to further reduced the effect that wheel changes the offset printing fold.In addition, in add filler use level when surpassing 30 quality %, paper power significantly reduces.

In addition; Except paper pulp, the filler, can in body paper, add internal sizing agent (internal sizing agent) as required, the yield rate improving agent of anionic property, nonionic, cationic or both sexes; Drainability improving agent, paper power reinforcing agent etc. copy paper with in add auxiliary agent.As the object lesson of internal sizing agent, can enumerate for example alkyl ketene dimer system, thiazolinyl ketene dimer system, alkenyl succinic anhydride system, styrene-propene acid system, higher fatty acids system, Petropols system, sizing agents such as rosin series.In addition; As the object lesson of yield rate improving agent, drainability improving agent, paper power reinforcing agent, can enumerate the polyvalent metal compounds (being in particular aluminum sulfate, aluminium chloride, sodium aluminate, alkaline aluminium compound etc.) of aluminium etc. for example, various starch based, polyacrylamide, urea resin, polyamide polyamines resin, polymine, polyamide epoxy polyamine chloropropane resin, polyvinyl alcohol, PEO etc.In addition, in the scope that does not hinder the desired effect of the present invention, also can use to have to stop bulk agent, the softener that combines function between paper pulp fiber.As the object lesson of bulk agent, softener, for example can enumerating, polyoxyalkylene compounds, fatty acid polyamide-amine, the polyalcohol of ester compounds, polyalcohol and the fatty acid ester compound of polyalcohol and aliphatic acid are that surfactant, grease are non-ionic surface active agent etc.With respect to paper pulp, the addition of said bulk agent, softener is generally about 0.05～2.0 quality %.

In the present invention, form device,, utilize and develop in order under the high speed more than 1000m/ minute, to carry out operation, throw the net the former of the folder net type of the raw material that comes out from head box clamping immediately with 2 to the not special restriction of machine as ply of paper.In Aladdin former, the raw material that comes out from head box is immediately by 2 clampings of throwing the net, and from the two wire sides dehydration possibility that becomes, can remedy the deficiency of the water separation capability that high speed brings.In addition, along with losing of the Free Surface of online raw material, can change the size of the dewatering pressure on the raw material that is applied between net, the quality of body paper also can be greatly improved.

Yet the raw material of the low concentration that comes out from head box carries out powerful dehydration in two wire side sides immediately, exists the retention that the l Water Paper top layer takes place easily to reduce, and reduces such shortcoming in the peel strength of the thickness direction of paper.Therefore; Adopt the coated paper of the body paper that existing fourdriner forming device etc. obtains to compare with having used, use to be employed in the coated paper for printing that body paper that paper machine that wet end has such folder net type former manufactures paper with pulp makes and when using the printing of web offset printing machine, to have easy this shortcoming of generation foaming fault.

As the wet pressing device that is attached in the paper machine with Aladdin former,,, need the wet pressing device of the boots formula more than 1 for the high speed that adapts to more than 1000m/ minute is copied paper slip spare to the not restriction especially of its machine.

That is, under the high speed operating condition more than 1000m/ minute, if only adopt the wet pressing device of existing roll-type; The just so-called wet pressing device that makes woollen blanket and l Water Paper make its dehydration together through the narrow and small nip portion that forms between roller/roller; When running speed improves, need increase line pressure simultaneously, because the hydraulic pressure of roller near surface increases rapidly in nip; Fragmentation between ply of paper takes place; And only there is the fibre density of dehydration one side to increase, causes the density contrast in the base paper sheet to become very big, be difficult to obtain the excellent high coated paper for printing of printing quality of anti-foaming characteristic.Therefore, as the wet pressing device of collateral use in the high speed paper machine that has Aladdin former in the present invention like this, the wet pressing device that need have the wide cut nip of the boots formula more than 1 obtains anti-foaming characteristic and the excellent coated paper for printing of printing quality.Especially, for the configuration of pressing device, more preferably final at least nip is to press water with existing roll forming squeezing mode, and shoe press uses in the nip of its leading portion.

As the drier device of in the paper machine of wet pressing device, setting up with Aladdin former and the boots formula more than 1; For the high speed that can adapt to more than 1000m/ minute is copied paper slip spare; At least at the dry initial stage before surface treatment, need single hop arrange type drier device.Promptly; Divide under the high speed operating condition more than planting at 1000m/; If when making l Water Paper carry out drying through existing 2 sections arrange type driers; In any case all can be owing to the swing of paper leaf in dry run (Freerun) part of paper leaf paper take place and cut off, perhaps produce the fold of paper leaf, be difficult to keep stable the advancing property of high speed and in the quality of width.Therefore; In order to obtain the high stability excellence; And the coated paper for printing that printing quality is excellent; As the drier device of collateral use in the high speed paper machine of the such wet press of the present invention with Aladdin former and the boots formula more than 1, need the dry initial stage before surface treatment at least, single hop arrange type drier is set.

Among the present invention; In the body paper that uses Aladdin former type paper machine to obtain; Through using the size press device; Use with natural glues such as composite adhesiveses such as polyacrylamide, starch and as the size press liquid of principal component intensity between ply of paper is strengthened in body paper enforcement surface treatment, property is fitted in additional anti-foaming.In addition, as the size press device of in Aladdin former type paper machine, setting up use, need be that the high speed that is adapted at more than 1000m/ minute is copied the device that uses in the paper.

That is, beating of size press liquid takes place in existing 2 universal roll-type size press devices under the running up more than 1000m/ minute, and in fact promptly so-called boiling is difficult to carry out stable operation, in addition, is difficult to obtain stabilized quality.

Therefore; As the size press device of in the such high speed paper machine of the present invention, setting up use; In order to obtain operation property and excellent quality, need the transfer printing type size press device of application head metering size press (application head mete ring size press) etc.

The size press device of high speed paper machine and transfer printing type with machine in during the mode operation; Especially, the solid component concentration of the adhesive in the size press liquid of size press unit feeding is important, in the present invention; This concentration is set at 2～12 quality %, is preferably 4～10 quality %.This is because when solid component concentration surpassed 12 quality %, size press liquid did not fully carry out to inner the soaking into of body paper; Between ply of paper intensity to improve effect less, on the other hand, when being lower than 2 quality %; Size press liquid is promoted to soaking into of body paper, but the amount of the size press liquid that can soak into is limited naturally, the result; Amount of binder in the ply of paper becomes inadequately, can not expect to improve the effect of intensity between ply of paper, so not preferred.In addition, if the concentration of size press liquid is reduced to lower than required, after size press-treated, it is big that the drying load of body paper becomes, copying in the paper at a high speed, and or not the embodiment of expectation.

In the present invention; As the adhesive that in above-mentioned size press operation, uses; Can enumerate natural polysaecharides and oligomer thereof such as the cool water soluble starch that obtains from the refining starch that obtains of natural plants, hydroxyethyl starch, oxidized starch, etherification starch, organic phosphate starch, enzymically modified starch, with their flash dryings (flash dry), dextrin, mannosan, shitosan, arabogalactan, glycogen, inulin, pectin, hyaluronic acid, carboxymethyl cellulose, hydroxyethylcellulose, with and the modification body.And then, can enumerate native protein and modification bodies thereof such as casein, gelatin, soybean protein, collagen; Synthetic high polymer such as PLA, peptide, oligomer.In addition, can enumerate each (being total to) polymer latex such as styrene-butadiene system, acrylic acid series, polyvinyl acetate, ethane-acetic acid ethyenyl ester; Water soluble polymers such as polyvinyl alcohol, modified polyvinylalcohol, Sodium Polyacrylate, PEO, polyacrylamide, urea or melamine/formalin resin, polymine, polyamide epoxy polyamine chloropropane resin etc.They can use more than one.For using known natural, anthropogenics, have no particular limits in addition.

In addition, as required, also can in size press liquid, add pigment.As aforementioned pigment, for example can enumerate kaolin, barium sulfate, precipitated calcium carbonate, powdered whiting, aluminium hydroxide, forging light white (satin white), titanium dioxide, calcium sulfite, zinc sulfate, plastic pigment etc., common coated paper is used pigment.Wherein, owing to use powdered whiting can reduce the air permeability of body paper, when using the printing of web offset printing machine, can suppress the fault of bubbling, so preferred.When in size press liquid, cooperating pigment, as its cooperation ratio, with respect to 100 parts by mass pigment, adhesive is preferably 5～200 parts by mass, more preferably 10～100 parts by mass.

The coating weight of size press liquid is preferably 0.5～13g/m ²About.

The paper slip spare of copying for body paper; Except the twin wire former that uses folder net type is copied paper; Dewater with the boots pressing device more than 1 then, the dry initial stage before surface treatment carries out having no particular limits beyond the drying with single hop arrange type drier at least.For example, can be that acidity is copied paper, neutrality and copied any one mode that paper, alkalescent are copied paper etc.But in recent years,, preferably copy the paper mode and copy the body paper that paper obtains through neutrality owing to require the keeping quality of paper.Also can utilize enforcement smoothing processed such as soft press-polishing machine for body paper.Be preferably 30～150g/m at these quantitative (grammage) that copy the body paper of copying paper under the paper slip spare and obtaining ²

The manufacturing of coated paper for printing

The coating layer formation method of coated paper for printing of the present invention is the method with following operation: coating is the coating fluid of principal component with pigment and adhesive at least one face of aforementioned body paper, and drying and the operation of the coating layer more than 1 layer is set; And the operation of body paper and coating layer being implemented the pressurization processed.

In the present invention; Operable pigment has no particular limits when in body paper, coating layer being set, have the refining natural minerals pigment that forms such as for example various kaolin, talcum, powdered whiting, precipitated calcium carbonate, calcium carbonate and other hydrophily organic compounds compound synthetic dyestuff, satin white, lithopone, titanium dioxide, silica, aluminium oxide, aluminium hydroxide, zinc oxide, magnesium carbonate, burn till kaolin, hollow organic pigment, closely knit organic pigment, plastic pigment, adhesive pigment, plastic bead, micro-capsule etc.Certainly have more than and be limited to these.

As the adhesive that in coating layer, uses; Can enumerate natural polysaecharides and oligomer thereof such as the cool water soluble starch that obtains from the refining starch that obtains of natural plants, hydroxyethyl starch, oxidized starch, etherification starch, organic phosphate starch, enzymically modified starch, with their flash dryings, dextrin, mannosan, shitosan, arabogalactan, glycogen, inulin, pectin, hyaluronic acid, carboxymethyl cellulose, hydroxyethylcellulose, with and the modification body.And then, can enumerate native protein and modification bodies thereof such as casein, gelatin, soybean protein, collagen; Synthetic high polymer such as PLA, peptide, oligomer.In addition, can enumerate water soluble polymers such as each (being total to) polymer latex such as styrene-butadiene system, acrylic acid series, polyvinyl acetate, ethane-acetic acid ethyenyl ester, polyvinyl alcohol, modified polyvinylalcohol, Sodium Polyacrylate, PEO, polyacrylamide, urea or melamine/formalin resin, polymine, polyamide epoxy polyamine chloropropane resin etc.They can use more than one.For using known natural, anthropogenics, have no particular limits in addition.

In addition, as the tackifier that in coating fluid, use, can enumerate water soluble polymers such as carboxymethyl cellulose, mosanom, methylcellulose, CMC, casein, Sodium Polyacrylate, styrene-maleic anhydride copolymer; The inorganic polymer of silicate etc. etc.

And then, also can suitably use normally used various auxiliary agents such as dispersant, antifoaming agent, anti-hydrated agent, colouring agent as required, and with the material behind these various auxiliary agent cationizations.

In the present invention, the method that is coated with coating layer is had no particular limits, can suitably use various Scraper applicators such as dragging cutter (Trailing) spreader, flexibility (flexible) spreader, roll-type (roll application) spreader, spray formula (fountain application) spreader, short resident (short dwell) spreader; The various transmission spreaders of size press, door roller (gate roll), sym-sizer etc., airblade coating device, line rod spreader (bar coater); Bar type spreader (rod coater), bar type blade coating device, Champflex print roll coating device (Champflex coater); The intaglio plate spreader; The curtain coating device, mould spreader, DF spreader (Direct Fountain coater); Sprayer, casting is coated with modes such as device.These devices can be devices in the machine, also can be machine external apparatus.

Coating weight to coating layer has no particular limits, but under the situation of for example 2 layers of coating, in dry mass, primary coat coating layer and table are coated with coating layer and are each face 1.5～15g/m ²About, consider blank sheet of paper quality, printing quality and the printability of the coated paper for printing that obtains, the drying capacity when further contemplating coated paper and making etc., it is desirable to primary coat coating layer and table, to be coated with each face that coating layer adds up to be 5～30g/m ²About scope.In addition, as the drying means of moistening coating layer, can adopt for example vapour seasoning, gas heat drying, electrothermal drying, variety of ways such as infrared dehydration.

Coated paper for printing of the present invention also can be between priming coat and body paper, to form three coating layer adjacent with priming coat etc. and become the structure more than 3 layers.Composition and coating weight to said the 3rd coating layer have no particular limits, and needing only in each face of dry mass is 0.5～10g/m ²About mode to utilize coating such as transfer printing type size press device be the coating fluid of principal component with pigment and/or adhesive arbitrarily, dryly more just can.

When making coated paper for printing of the present invention; After forming coating layer; Utilizing various calendering devices to implement smoothing handles; As said calendering device, suitable supercalender, soft press-polishing machine, gloss calender, close-coupled calender (compactcalender), super unglazed calender, the unglazed calender normally used calendering devices such as (mat calender) of using.As the condition of press polish processing, can be according to the needed product quality paper moisture etc. before the temperature, press polish pressure, nip number, roller speed, press polish of selection rigid roller that suit.And then, calendering device have the machine outer type that separates with spreader and with spreader be type in the machine of one, can use any one.The material of the calendering device that uses, if rigid roller, the then suitable roller that uses metal perhaps to implement mirror process such as hard chromium plating on its surface.If resilient roller, the then suitable resin roll such as polyurethane resin, epoxy resin, polyamide, phenolic resins, polyacrylate resin of using, the roller that moulding such as cotton, nylon, asbestos, aramid fiber are obtained.In addition, can appropriate combination be used for the coated paper after the calender processing damping, humidification be coated with water device, static damping device, steam damping device etc.

Embodiment

Enumerate embodiment below the present invention is explained particularly, certainly, the present invention does not receive the restriction of these embodiment.In addition, short of special instruction, part and % in the example represent parts by mass and quality % respectively.In addition, the addition of the reagent of use representes to be converted into the parts by mass of solid constituent.

The manufacturing of hydrosilicate (A)

According to Japan special hope 2007-319072, add 646 parts by mass water while stirring successively, the aqueous sodium persulfate solution of 138 parts by mass, 5% concentration, No. 3 sodium metasilicate of 347 parts by mass JIS K1408-1966 defineds.Regulate temperature to 50 ℃ while stirring, then, the peripheral speed of agitator adjusted to 10m/ second, in 15 minutes, add 91 parts by mass sulfuric acid (concentration 20%), carry out the 1st section neutralization after, under the state of above-mentioned peripheral speed, be warmed up to 90 ℃.Then, the sulfuric acid that under this temperature, adds 20% concentration while stirring is 5.5 up to pH, carries out the 2nd section neutralization.Then the above-mentioned slurry that obtains is separated, filters with 200 mesh, obtain hydrosilicate (A) slurry of 12 quality %.

The hydrosilicate that obtains (A) is measured with day laser diffraction formula size distribution meter of machine dress company production, and the particle diameter of its 50% volume accumulated value is 15.4 μ m as a result.In addition, be diluted to the transmitted intensity of the hydrosilicate slurry of normal concentration, obtain molar absorption coefficient ε (ε=5.5) with spectrophotometric determination.

In addition, after hydrosilicate slurries filtration that obtains and washing, a part of filter cake (cake) is carried out drying under 105 ℃, be used for the mensuration (apparent specific gravity=0.1) of apparent specific gravity.

The manufacturing of hydrosilicate (B)

According to Japan special hope 2007-319072, add 396 parts by mass water while stirring successively, the aqueous sodium persulfate solution of 666 parts by mass, 5% concentration, No. 3 sodium metasilicate of 347 parts by mass JIS K1408-1966 defineds.Regulate temperature to 50 ℃ while stirring, then, the peripheral speed of agitator adjusted to 10m/ second, in 15 minutes, add 91 parts by mass sulfuric acid (concentration 20%), carry out the 1st section neutralization after, under the state of above-mentioned peripheral speed, be warmed up to 90 ℃.Then, the sulfuric acid that under this temperature, adds 20% concentration while stirring is 5.5 up to pH, carries out the 2nd section neutralization.Then the above-mentioned slurry that obtains is separated, filters with 200 mesh, obtain hydrosilicate (B) slurry of 12 quality %.

The hydrosilicate that obtains (B) is measured with aforementioned laser diffraction-type size distribution meter, and the particle diameter of its 50% volume accumulated value is 19.0 μ m as a result.In addition, be diluted to the transmitted intensity of the hydrosilicate slurry of normal concentration, obtain molar absorption coefficient ε (ε=4.8) with spectrophotometric determination.

In addition, after hydrosilicate slurries filtration that obtains and washing, a part of filter cake is carried out drying under 105 ℃, be used for the mensuration (apparent specific gravity=0.1) of apparent specific gravity.

The manufacturing of calcium carbonate slurry (A)

Method according to japanese kokai publication hei 5-163018 communique " manufacturing approach of calcium carbonate " record is made calcium carbonate slurry (A).In reactive tank, loading 600 liters of concentration is the calcium hydroxide waterborne suspension of 9.0 quality %, and using air to dilute carbon dioxide on one side is the gas (concentration of carbon dioxide: 20 capacity %) that the ratio of 1500 liters/minute (15 ℃) is blown into this dilution with flow.

In addition, as the method for the micro air bubble that forms carbon dioxide, the aperture (circle, diameter are 20mm, and percent opening is 5%) that from the conical air reservoir (air reservoir) (drift angle is 90 °) of reactive tank bottom, forms bloats micro air bubble.Reacting initial temperature is 42 ℃, and the reaction time is 80 minutes.The average grain diameter of the calcium carbonate that obtains, molar absorption coefficient, apparent specific gravity are respectively 6.2 μ m, 17.9,0.25.

The manufacturing of calcium carbonate slurry (B)

Method according to japanese kokai publication hei 5-163018 communique " manufacturing approach of calcium carbonate " record is made calcium carbonate slurry (B).In reactive tank, loading 600 liters of concentration is the calcium hydroxide waterborne suspension of 7.2 quality %, and using air to dilute carbon dioxide on one side is the gas (concentration of carbon dioxide: 20 capacity %) that the ratio of 1500 liters/minute (15 ℃) is blown into this dilution with flow.

In addition, as the method for the micro air bubble that forms carbon dioxide, the aperture (round, diameter 20mm, percent opening 5%) that from the conical air reservoir (drift angle is 90 °) of reactive tank bottom, forms bloats micro air bubble.Reacting initial temperature is 45 ℃, and the reaction time is 65 minutes.The average grain diameter of the calcium carbonate that obtains, molar absorption coefficient, apparent specific gravity are respectively 6 μ m, 17.3,0.3.

The making of DIP

The old paper material that is mixed with equivalent old newspaper and outdated magazine is processed disassociation in the pulping with high density machine.Raw material after the disassociation is diluted to 1%,, utilizes screen cloth (screen) to handle successively with circular hole frame (hole basket) and slot frame (slit basket) as the dedusting operation.And then; Through utilizing the deinking operation of floatation device (trade name: OK Floatater, Oji Engineering Co., LTD. production); After utilizing the washing procedure processing of leacher (extractor); After then utilizing the enrichment process of valveless thickener (valvelessthickener), pressafiner (screw press) to be concentrated to 25%, add 3% hydrogen peroxide, 2% caustic soda, 2% sodium metasilicate, temperature is warmed up to 70 ℃; (AIKAWA IRON WORKS CO., LTD) dispersion machine as shaft type carries out dispersion treatment the 1st time to use diffuser (Disperser).The limit keeps the temperature limit that the bleaching that the paper pulp after handling carried out 3 hours is handled, and (AIKAWA IRONWORKS CO., LTD) dispersion machine as shaft type carries out dispersion treatment the 2nd time to use diffuser then.

Paper pulp after the dispersion treatment is diluted to 1%; And then through utilizing floatation device (trade name: OK Floatater; Oji Engineering Co., LTD. produces) the deinking operation, utilize the washing procedure of leacher; After utilizing the dedusting operation of the screen cloth of slot frame to handle, utilize the enrichment process of valveless thickener, pressafiner to be concentrated to 35%.Add 1% thiourea dioxide (FAS), 0.5% caustic soda in the paper pulp after concentrating, temperature is warmed up to 110 ℃, use heat diffuser (KRIMA corporate system) to carry out the 3rd time dispersion treatment as the dispersion machine of disc type.And then, through utilizing the washing procedure of leacher, utilize the enrichment process of valveless thickener to be concentrated to 10%, obtain whiteness and be 81%, CSF270ml, field trash be 110/m ²Old paper paper pulp raw material (DIP).

Embodiment 1

The making of broad leaf tree paper pulp

Use Lo-Solids distilling kettle (Andritz Group production), will account for yearning between lovers (Acacia mangium) by horse: the broad leaf tree sheet bits that alpine ash=30: 70 (mass ratio) forms adopt the Lo-Solids cooking process to carry out sulphate cook.At this moment, using sulphidity is 28 white liquid, and about white liquid interpolation rate, adding with respect to sheet bits over dry quality to sheet bits delivery system is 10% active alkali, be divided into 8% and add cooking zone, 2% to and add scrubbing section to, and be to carry out boiling under 146 ℃ at boiling temperature.Sheet after boiling bits are through Xie Zhihou, through washing procedure, screen cloth operation and then through washing procedure once more, are not shone paper pulp.

Do not shine in the paper pulp aforementioned, adding every absolute dried paper pulp quality is 1.7% caustic soda, 1.8% oxygen, at pulp density is to carry out two sections oxygen-alkali bleachings under 10%, 98 ℃, 50 minutes the condition.At this moment, caustic soda is disposable interpolation in first section, and the oxygen gas gradation is added, and in first section, adds 1.0%, in second section, adds 0.8%.Paper pulp behind the oxygen-alkali bleaching carries out carrying out washing treatment through washing procedure.

In the paper pulp behind aforementioned oxygen-alkali bleaching, add every absolute dried paper pulp quality and be 1.2% sulfuric acid, making it is after being detained under 10%, 60 ℃, 60 minutes the condition, to carry out carrying out washing treatment through washing procedure at pulp density.Then, adding every absolute dried paper pulp quality is 0.5% ozone, 0.5% chlorine dioxide, behind concentration ozone/ClO 2 bleaching, carries out carrying out washing treatment through washing procedure under pulp density is 10%, 58 ℃, 60 minutes condition, carrying out.Then, adding every absolute dried paper pulp quality is 1.0% caustic soda, 0.1% hydrogen peroxide, is after 10%, 60 ℃, 90 minutes condition is carried out alkaline extraction at pulp density, carries out carrying out washing treatment through washing procedure.At last, adding every absolute dried paper pulp quality and be 0.2% chlorine dioxide, is after carrying out ClO 2 bleaching under 10%, 70 ℃, 120 minutes the condition, to carry out carrying out washing treatment through washing procedure at pulp density, obtains bleached pulp.The ISO whiteness of the bleached pulp that obtains is 90.1%.In addition, the xylan containing ratio is 13.5%.

Here, the mensuration of the xylan containing ratio in the above-mentioned bleached pulp is carried out through following method.

Get the bleached pulp of oven-dry weight 350mg, add the sulfuric acid of 3ml 72% therein, after fully stirring, placed 2.5 hours.Add 84ml distilled water then, after fully stirring, 121 ℃ of reactions 1 hour down, it is monose that the polysaccharide of bleached pulp is added water decomposition.It is quantitative that monose is to use ion chromatograph that post (CarboPac PA1) is housed (DX-500, Dionex Corporation. produces) to carry out, with the ratio of the wood sugar amount in the total monosaccharide amount xylan containing ratio as bleached pulp.

Above-mentioned bleached pulp (concentration is 4.2 quality %) is imported to the 3 machines double disc refiner (material of cutter: Ni-Hard of (cutter of use is identical) connection side by side; Cutter is wide: 4.0mm; Groove width: 4.0mm); Pull an oar to CSF (Canadian standard freeness, Canadian Standard Freeness) 450ml.

The making of coniferous tree paper pulp

Use Lo-Solids distilling kettle (Andritz Group productions), will be by pesudotsuga taxifolia: pine: the coniferous tree sheet bits employing Lo-Solids cooking process that pinus caribaea=1: 1: 1 (mass ratio) constitutes carries out sulphate cook.At this moment, using sulphidity is 25 white liquid, and about white liquid interpolation rate, adding with respect to sheet bits over dry quality to sheet bits delivery system is 10% active alkali, be divided into 8% and add cooking zone, 2% to and add scrubbing section to, and be to carry out boiling under 165 ℃ at boiling temperature.With the sheet after boiling bits Xie Zhihou,, and then, do not shone paper pulp through washing procedure once more through washing procedure, screen cloth operation.

Do not shine in the paper pulp aforementioned, adding every absolute dried paper pulp quality is 2.0% caustic soda, 1.8% oxygen, at pulp density is to carry out two sections oxygen-alkali bleachings under 10%, 98 ℃, 50 minutes the condition.Here, caustic soda is disposable interpolation in first section, and oxygen gas adds 1.0% in first section, in second section, adds 0.8%.Paper pulp behind the oxygen-alkali bleaching carries out carrying out washing treatment through washing procedure.

In the paper pulp behind aforementioned oxygen-alkali bleaching, add every absolute dried paper pulp quality and be 1.2% sulfuric acid, making it is after being detained under 10%, 60 ℃, 60 minutes the condition, to carry out carrying out washing treatment through washing procedure at pulp density.Then, adding every absolute dried paper pulp quality is 0.5% ozone, 0.5% chlorine dioxide, behind concentration ozone/ClO 2 bleaching, carries out carrying out washing treatment through washing procedure under pulp density is 10%, 58 ℃, 60 minutes condition, carrying out.Then, adding every absolute dried paper pulp quality is 1.0% caustic soda, 0.1% hydrogen peroxide, at pulp density is after carrying out alkaline extraction under 10%, 60 ℃, 90 minutes the condition, to carry out carrying out washing treatment through washing procedure.At last, adding every absolute dried paper pulp quality and be 0.2% chlorine dioxide, is after carrying out ClO 2 bleaching under 10%, 70 ℃, 120 minutes the condition, to carry out carrying out washing treatment through washing procedure at pulp density, obtains bleached pulp.The ISO whiteness of the bleached pulp that obtains is 84.5%, and the xylan containing ratio is 6.6%.

Above-mentioned bleached pulp (concentration is 4.2 quality %) is imported to the double disc refiner of 1 machine, and (material of cutter: 17 chromium, cutter is wide: 4.8mm, groove width: 4.8mm), pull an oar to CSF480ml.

The making of body paper

At aforementioned making beating paper pulp with coniferous tree: in the pulp that broad leaf tree=30: 70 (mass ratio) mixes; In paper machine stock tank (machine chest), add 0.5% successively (with respect to paper pulp; Be scaled solid constituent) the cationic starch (trade name: OJI ACEK, Oji Cornstarch Co. of aluminum sulfate, 0.9% (, being scaled solid constituent) with respect to paper pulp; Ltd. production), 0.03% (with respect to paper pulp; Be scaled solid constituent) as the AKD sizing agent (trade name: SizepineK-902, waste river chemical production) of internal sizing agent, then plain boiled water that reclaims and above-mentioned pulp are mixed; Before fan pump, add aforementioned calcium carbonate (B), make paper ash be divided into 15% as filler.And then before screen cloth, add 0.016% cationic acrylic resin (Ltd. produces for trade name: DR-3015, HYMO Co.), prepare paper stock (concentration is 1.01%).With this paper stock J/W than be 0.995, Vr/Vw than be 1.04, running copies speed for forming ply of paper through Aladdin former under 1500m/ minute the condition, adopts 2 continuous shoe press apparatus to press water after, through roll forming pressing device press for extracting juice water; Carrying out smoothing handles; After utilizing single hop to arrange the drier drying, use bar metering (rod metering) type size press device, working concentration is the oxidized starch (trade name: Oji Ace A of 4.0 quality %; Oji Cornstarch Co.; Ltd. produce) aqueous solution, carry out size press-treated, make that solid constituent is 2.5g/m ², carry out drying with 2 sections arrangement driers then, logical paper in the calender of mode in machine, obtaining moisture is 4.5%, quantitatively is 47.4g/m ²Coating use body paper.

The primary coat coating layer is with the preparation of pigment application liquid

By powdered whiting (trade name: Hydrocarb60; BIHOKU FUNKAKOGYO CO., LTD. produces) in the pigment slurry that forms, with respect to 100 parts of pigment; Add 4 parts of starch (trade name: Oji Ace A successively as adhesive; OjiCornstarch Co., Ltd. produces), 5 parts of benzene diene-butadiene copolymer latexes (trade name: OJ-2000, JSR company produces); And then add antifoaming agent and dyestuff as auxiliary agent, prepare final solid component concentration and be 67% primary coat coating layer and use pigment application liquid.

Table is coated with the preparation of coating layer with pigment application liquid

Adding 0.1 part of (trade name: AronT-50 of the Sodium Polyacrylate as dispersant with respect to the kaolin that will disperse; TOAGO SEI CO., LTD. produces) the aqueous solution in, add 50 parts of kaolin (trade name: Hydrogross 90; J.M.HuberCorporation production), 50 parts of powdered whiting (trade names: Hydrocarb90; BIHOKU FUNKA KOGYO CO., LTD. produces), utilize Ke Lesi high speed dispersor (Cowles dissolver) that it is disperseed the preparation pigment slurry.In this pigment slurry; With respect to 100 parts of pigment, add 3 parts of oxidized starchs (trade name: OjiAceA, Oji Cornstarch Co. successively; Ltd. production), 8.4 parts of benzene diene-butadiene copolymer latex (trade names: OJ-2000; JSR company produces), and then add antifoaming agent and dyestuff as auxiliary agent, prepare final solid component concentration and be 66.5% table and be coated with coating layer and use pigment application liquid.

The manufacturing of coated paper for printing

Use is supplied with the Scraper applicator of coating fluid with fountain (jet fountain) mode, (quantitatively is 47.4g/m in the above-mentioned coating that obtains with body paper ²) go up coating and dry aforementioned primary coat coating layer is used pigment application liquid, make that the drying coated amount of each face is 7.5g/m ², obtain two sides primary coat coated paper.Then, use the Scraper applicator of supplying with coating fluid with the fountain mode, coating and dry aforementioned table are coated with coating layer and use pigment application liquid on aforementioned two sides primary coat coated paper, make that the drying coated amount of each face is 9.5g/m ², obtain coated paper.Have the multiple pressure district calender of metallic roll and resin roll to handle with tilted configuration the coated paper that obtains like this, adjustment temperature, line pressure, logical paper slip spare make that the blank sheet of paper glossiness is 70% during processing, obtain quantitatively being 81.4g/m ²Coated paper for printing.

Embodiment 2

The making of broad leaf tree paper pulp

As the making beating treatment conditions, be 4.3% except making pulp density, import to the double disc refiner (material of cutter: SUS that 3 machines connect side by side; Cutter is wide: 1.0mm; 1 machine of groove width: 2.0mm and the material of cutter: 17 chromium, cutter is wide: 2.4mm, 2 machines of groove width: 2.4mm are also used) in; Pull an oar to CSF450ml, likewise obtain broad leaf tree making beating paper pulp with embodiment 1.

The making of coniferous tree paper pulp

In embodiment 1; Except the double disc refiner that coniferous tree bleached pulp (concentration is 4.4 quality %) imported to 1 machine (material of cutter: 17 chromium, cutter is wide: 4.8mm, groove width: 4.8mm); Pull an oar to CSF480ml, likewise obtain coniferous tree making beating paper pulp with embodiment 1.

The making of body paper

By aforementioned making beating paper pulp with coniferous tree: in the pulp that broad leaf tree=10: 90 (mass ratio) mixes; In paper machine stock tank, add 0.5% successively (with respect to paper pulp; Be scaled solid constituent) the cationic starch (trade name: Oji Ace K, OjiCornstarch Co. of aluminum sulfate, 0.9% (, being scaled solid constituent) with respect to paper pulp; Ltd. production), 0.03% (with respect to paper pulp; Be scaled solid constituent) as the AKD sizing agent (trade name: SizepineK-902, waste river chemical production) of internal sizing agent, then the plain boiled water that reclaims is mixed with above-mentioned pulp; Before fan pump, add aforementioned calcium carbonate (B), make paper ash be divided into 15% as filler.And then before screen cloth, add 0.016% cationic acrylic resin (Ltd. produces for trade name: DR-3015, HYMO Co.), and preparation paper stock (concentration is 1.01%), in addition, likewise obtaining moisture with embodiment 1 is 4.5%, quantitatively is 47.4g/m ²Coating use body paper.

The manufacturing of coated paper for printing

With embodiment 1 likewise, by the above-mentioned coating that obtains with body paper (quantitatively for 47.4g/m ²) to obtain quantitatively be 81.4g/m ²Coated paper for printing, its blank sheet of paper glossiness is 70%.

Embodiment 3

The making of broad leaf tree paper pulp

As the making beating treatment conditions, be 4.4% except making pulp density, import to the double disc refiner (material of cutter: SUS that 3 machines connect side by side; Cutter is wide: 1.0mm; 1 machine of groove width: 2.0mm and the material of cutter: 17 chromium, cutter is wide: 2.4mm, 2 machines of groove width: 2.4mm are also used) in; Pull an oar to CSF400ml, likewise obtain broad leaf tree making beating paper pulp with embodiment 1.

The making of coniferous tree paper pulp

As the making beating treatment conditions, be 4.4% except making pulp density, (material of cutter: 17 chromium, cutter is wide: 4.8mm, groove width: 4.8mm), pull an oar to CSF480ml, likewise obtain coniferous tree making beating paper pulp with embodiment 1 to import to the double disc refiner of 1 machine.

The making of body paper

By aforementioned making beating paper pulp with coniferous tree: in the pulp that broad leaf tree=5: 95 (mass ratio) mixes, the aluminum sulfate, 0.9% that in paper machine stock tank, adds 0.5% (with respect to paper pulp, being scaled solid constituent) successively is (with respect to paper pulp; Be scaled solid constituent) cationic starch (trade name: Oji Ace K; Oji CornstarchCo., Ltd. produces), 0.03% (with respect to paper pulp, being scaled solid constituent) be as the AKD sizing agent (trade name: SizepineK-902 of internal sizing agent; Waste river chemical production); Then the plain boiled water that reclaims is mixed the amphiprotic polyacrylamide of interpolation 0.1% (trade name: Polystron 1280, the production of waste river chemical industrial company) with above-mentioned pulp; Before fan pump, add aforementioned calcium carbonate (B) then, make paper ash be divided into 15% as filler.And then before screen cloth, add 0.016% cationic acrylic resin (Ltd. produces for trade name: DR-3015, HYMO Co.), prepare paper stock (concentration is 1.01%).With this paper stock J/W than be 0.995, Vr/Vw than be 1.04, running copies speed for forming ply of paper through Aladdin former under 1500m/ minute the condition, utilize 2 continuous shoe press apparatus to press water after, press water through the roll forming pressing device; Carrying out smoothing handles; After utilizing single hop to arrange the drier drying, use bar metering type size press device, working concentration is the oxidized starch (trade name: OjiAce A of 4.0 quality %; Oji Cornstarch Co.; Ltd. produce) aqueous solution, carry out size press-treated, make that solid constituent is 1.6g/m ², carry out drying with 2 sections arrangement driers then, logical paper in the calender of mode in machine, obtaining moisture is 4.5%, quantitatively is 47.4g/m ²Coating use body paper.

The manufacturing of coated paper for printing

Except using the aforementioned coating that obtains (quantitatively to be 47.4g/m with body paper ²) in addition, with embodiment 1 likewise, obtain quantitatively being 81.4g/m ²Coated paper for printing, its blank sheet of paper glossiness is 70%.

Embodiment 4

The making of broad leaf tree paper pulp

As the making beating treatment conditions, be 4.6% except making pulp density, import to the double disc refiner (material of cutter: SUS that 3 machines connect side by side; Cutter is wide: 1.0mm; 3 machines of groove width: 2.0mm) in, pull an oar to CSF350ml, likewise obtain broad leaf tree making beating paper pulp with embodiment 1.

The making of body paper

In the slurry that only forms, in paper machine stock tank, add the cationic starch (trade name: Oji Ace K of 0.9% (, being scaled solid constituent) successively with respect to paper pulp by above-mentioned broad leaf tree paper pulp; Oji Cornstarch Co.; Ltd. production), 0.03% (with respect to paper pulp, being scaled solid constituent) is as the AKD sizing agent (trade name: SizepineK-902, waste river chemical production) of internal sizing agent; In the plain boiled water that reclaims, add 0.5% aluminum sulfate then; Mix with above-mentioned pulp then, before fan pump, add aforementioned calcium carbonate (B), make paper ash be divided into 15% as filler.And then before screen cloth, add 0.016% cationic acrylic resin (Ltd. produces for trade name: DR-3015, HYMO Co.), prepare paper stock (concentration is 1.01%).With this paper stock J/W than be 0.995, Vr/Vw than be 1.03, running copies speed for forming ply of paper through Aladdin former under 1500m/ minute the condition, utilize 2 continuous shoe press apparatus to press water after, press water through the roll forming pressing device; Carrying out smoothing handles; After utilizing single hop to arrange the drier drying, use bar metering type size press device, working concentration is the oxidized starch (trade name: Oji Ace A of 4.0 quality %; Oji Cornstarch Co.; Ltd. produce) aqueous solution, carry out size press-treated, making solid constituent is 1.6g/m ², carry out drying with 2 sections arrangement driers then, logical paper in the calender of mode in machine, obtaining moisture is 4.5%, quantitatively is 47.4g/m ²Coating use body paper.

The manufacturing of coated paper for printing

Except using the aforementioned coating that obtains (quantitatively to be 47.4g/m with body paper ²) in addition, with embodiment 1 likewise, obtain quantitatively being 81.4g/m ²Coated paper for printing, its blank sheet of paper glossiness is 70%.

Embodiment 5

The making of broad leaf tree paper pulp

As the making beating treatment conditions, be 4.1% except making pulp density, import to the 3 machines double disc refiner (material of cutter: 17 chromium of (cutter of use is identical) connection side by side; Cutter is wide: 2.4mm; Groove width: 2.4mm), pull an oar to CSF350ml, likewise obtain broad leaf tree making beating paper pulp with embodiment 1.

The making of coniferous tree paper pulp

As the making beating treatment conditions, be 4.4% except making pulp density, (material of cutter: 17 chromium, cutter is wide: 4.8mm, groove width: 4.8mm), pull an oar to CSF480ml, likewise obtain coniferous tree making beating paper pulp with embodiment 1 to import to the double disc refiner of 1 machine.

The making of body paper

By aforementioned broad leaf tree paper pulp and coniferous tree paper pulp with coniferous tree: broad leaf tree=10: 90 (mass ratio) mixes in the pulp that obtains; In paper machine stock tank, add the cationic starch (trade name: Oji Ace K, Oji Cornstarch Co. of 0.9% (, being scaled solid constituent) successively with respect to paper pulp; Ltd. production), 0.03% (with respect to paper pulp; Be scaled solid constituent) as the AKD sizing agent (trade name: SizepineK-902, waste river chemical production) of internal sizing agent, in the plain boiled water that reclaims, add 0.5% aluminum sulfate then; Mix with above-mentioned pulp then; Add the amphiprotic polyacrylamide (trade name: Polystron 1280, waste river chemical industrial company produces) of 0.1% (, being scaled solid constituent) with respect to paper pulp; Before fan pump, add aforementioned calcium carbonate (A) then, make paper ash be divided into 18% as filler.And then the cationic acrylic resin (trade name: DR-3015 of interpolation 0.016% before screen cloth; HYMO Co.; Ltd. produce), behind screen cloth, add 0.01% anionic property acrylic resin (trade name: FA-230, HYMO Co.; Ltd. produce), preparation paper stock (concentration is 1.01%).With this paper stock J/W than be 0.995, Vr/Vw than be 1.03, running copies speed for forming ply of paper through Aladdin former under 1500m/ minute the condition, utilize 2 continuous shoe press apparatus to press water after, press water through the roll forming pressing device; Carrying out smoothing handles; After utilizing single hop to arrange the drier drying, use bar metering type size press device, working concentration is the oxidized starch (trade name: Oji AceA of 4.0 quality %; Oji Cornstarch Co.; Ltd. produce) aqueous solution, carry out size press-treated, making solid constituent is 1.6g/m ²Carry out drying with 2 sections arrangement driers then, logical paper in the calender of mode in machine, obtaining moisture is 4.5%, quantitatively is 47.4g/m ²Coating use body paper.

The manufacturing of coated paper for printing

Except using the aforementioned coating that obtains (quantitatively to be 47.4g/m with body paper ²) in addition, with embodiment 1 likewise, obtain quantitatively being 81.4g/m ²Coated paper for printing, its blank sheet of paper glossiness is 70%.

Embodiment 6

The making of broad leaf tree paper pulp

Except bleached hardwood paper pulp (concentration is 4.4 quality %) being imported to the double disc refiner (material of cutter: SUS that 3 machines connect side by side; Cutter is wide: 1.0mm; 2 machines of groove width: 2.0mm and the material of cutter: 17 chromium, cutter is wide: 2.4mm, 1 machine of groove width: 2.4mm is also used) in; Pull an oar to CSF350ml, likewise obtain broad leaf tree making beating paper pulp with embodiment 1.

The making of coniferous tree paper pulp

As the making beating treatment conditions, be 4.4% except making pulp density, (material of cutter: 17 chromium, cutter is wide: 4.8mm, groove width: 4.8mm), pull an oar to CSF480ml, likewise obtain coniferous tree making beating paper pulp with embodiment 1 to import to the double disc refiner of 1 machine.

The making of body paper

By aforementioned broad leaf tree paper pulp and coniferous tree paper pulp with coniferous tree: in the pulp that broad leaf tree=10: 90 (mass ratio) mixes, in paper machine stock tank, add the cationic starch (trade name: Oji Ace K of 0.9% (, being scaled solid constituent) successively with respect to paper pulp; Oji Cornstarch Co., Ltd. produces), 0.03% (with respect to paper pulp, being scaled solid constituent) be as the AKD sizing agent (trade name: SizepineK-902 of internal sizing agent; Waste river chemical production); In the plain boiled water that reclaims, add 0.5% aluminum sulfate then, mix with above-mentioned pulp then, add 0.1% (with respect to paper pulp; Be scaled solid constituent) amphiprotic polyacrylamide (trade name: Polystron 1280; Famine river chemical industrial company produces), before fan pump, add aforementioned calcium carbonate (A) then as filler, make paper ash be divided into 17%; Add hydrosilicate (A), make paper ash be divided into 2%.And then the cationic acrylic resin (trade name: DR-3015 of interpolation 0.016% before screen cloth; HYMO Co.; Ltd. produce), behind screen cloth, add 0.01% anionic property acrylic resin (trade name: FA-230, HYMO Co.; Ltd. produce), preparation paper stock (concentration is 1.01%).With this paper stock J/W than be 0.995, Vr/Vw than be 1.03, running copies speed for forming ply of paper through Aladdin former under 1500m/ minute the condition, utilize 2 continuous shoe press apparatus to press water after, press water through the roll forming pressing device; Carrying out smoothing handles; After utilizing single hop to arrange the drier drying, use bar metering type size press device, working concentration is the oxidized starch (trade name: Oji Ace A of 4.0 quality %; OjiCornstarch Co.; Ltd. produce) aqueous solution, carry out size press-treated, making solid constituent is 1.6g/m ², carry out drying with 2 sections arrangement driers then, logical paper in the calender of mode in machine, obtaining moisture is 4.5%, quantitatively is 47.4g/m ²Coating use body paper.

The manufacturing of coated paper for printing

Except using the aforementioned coating that obtains (quantitatively to be 47.4g/m with body paper ²) in addition, with embodiment 1 likewise, obtain quantitatively being 81.4g/m ²Coated paper for printing, its blank sheet of paper glossiness is 70%.

Embodiment 7

The making of broad leaf tree paper pulp

As the making beating treatment conditions, be 4.4% except making pulp density, import to the 3 machines double disc refiner (material of cutter: SUS of (cutter of use is identical) connection side by side; Cutter is wide: 1.0mm; Groove width: 2.0mm), pull an oar to CSF350ml, likewise obtain broad leaf tree making beating paper pulp with embodiment 1.

The making of old paper paper pulp

As the making beating treatment conditions, making the concentration of aforementioned DIP is 4.4%, and (material of cutter: 17 chromium, cutter is wide: 2.3mm, groove width: 2.3mm), pull an oar to CSF270ml, obtain DIP making beating paper pulp to import to the double disc refiner of 1 machine.

The making of body paper

By aforementioned broad leaf tree paper pulp and old paper paper pulp with broad leaf tree: in the pulp that old paper=90: 10 (mass ratio) mixes; In paper machine stock tank, add the cationic starch (trade name: Oji Ace K, Oji Cornstarch Co. of 0.9% (, being scaled solid constituent) successively with respect to paper pulp; Ltd. production), 0.03% (with respect to paper pulp; Be scaled solid constituent) as the AKD sizing agent (trade name: Size pineK-902, waste river chemical production) of internal sizing agent, in the plain boiled water that reclaims, add 0.5% aluminum sulfate then; Mix with above-mentioned pulp then; Add the amphiprotic polyacrylamide (trade name: Polystron 1280, waste river chemical industrial company produces) of 0.25% (, being scaled solid constituent) with respect to paper pulp; Before fan pump, add aforementioned calcium carbonate (A) then, make paper ash be divided into 18% as filler.And then the cationic acrylic resin (trade name: DR-3015 of interpolation 0.016% before screen cloth; HYMO Co.; Ltd. produce), behind screen cloth, add 0.012% anionic property acrylic resin (trade name: FA-230, HYMO Co.; Ltd. produce), preparation paper stock (concentration is 1.01%).With this paper stock J/W than be 0.995, Vr/Vw than be 1.03, running copies speed for forming ply of paper through Aladdin former under 1500m/ minute the condition, utilize 2 continuous shoe press apparatus to press water after, press water through the roll forming pressing device; Carrying out smoothing handles; After utilizing single hop to arrange the drier drying, use bar metering type size press device, working concentration is the oxidized starch (trade name: Oji AceA of 4.0 quality %; Oji Cornstarch Co.; Ltd. produce) aqueous solution, carry out size press-treated, make that solid constituent is 1.6g/m ², carry out drying with 2 sections arrangement driers then, logical paper in the calender of mode in machine, obtaining moisture is 4.5%, quantitatively is 47.4g/m ²Coating use body paper.

The manufacturing of coated paper for printing

Except using the aforementioned coating that obtains (quantitatively to be 47.4g/m with body paper ²) in addition, likewise obtaining the blank sheet of paper glossiness with embodiment 1 is 70%, quantitatively is 81.4g/m ²Coated paper for printing.

Embodiment 8

The making of broad leaf tree paper pulp

As the making beating treatment conditions, be 4.6% except making pulp density, import to the 3 machines double disc refiner (material of cutter: SUS of (cutter of use is identical) connection side by side; Cutter is wide: 1.0mm; Groove width: 2.0mm), pull an oar to CSF350ml, likewise obtain broad leaf tree making beating paper pulp with embodiment 4.

The making of body paper

In the slurry that only forms, in paper machine stock tank, add the cationic starch (trade name: Oji Ace K of 0.9% (, being scaled solid constituent) successively with respect to paper pulp by above-mentioned broad leaf tree paper pulp; Oji Cornstarch Co., Ltd. produces), 0.03% (with respect to paper pulp, being scaled solid constituent) be as the AKD sizing agent (trade name: SizepineK-902 of internal sizing agent; Waste river chemical production); In the plain boiled water that reclaims, add 0.5% aluminum sulfate then, mix with above-mentioned pulp then, add 0.1% (with respect to paper pulp; Be scaled solid constituent) amphiprotic polyacrylamide (trade name: Polystron 1280; Famine river chemical industrial company produces), before fan pump, add aforementioned calcium carbonate (B) then as filler, make paper ash be divided into 15%.And then before screen cloth, add 0.016% cationic acrylic resin (Ltd. produces for trade name: DR-3015, HYMO Co.), prepare paper stock (concentration is 1.01%).With this paper stock J/W than be 0.995, Vr/Vw than be 1.05, running copies speed for forming ply of paper through Aladdin former under 1500m/ minute the condition, press water through the roll forming pressing device after, utilize continuous 2 platform shoe press apparatus to press water; Carrying out smoothing handles; After utilizing single hop to arrange the drier drying, use bar metering type size press device, working concentration is the oxidized starch (trade name: Oji Ace A of 4.0 quality %; Oji Cornstarch Co.; Ltd. produce) aqueous solution, carry out size press-treated, make that solid constituent is 1.6g/m ², carry out drying with 2 sections arrangement driers then, logical paper in the calender of mode in machine, obtaining moisture is 4.5%, quantitatively is 47.4g/m ²Coating use body paper.

The manufacturing of coated paper for printing

Except using the aforementioned coating that obtains (quantitatively to be 47.4g/m with body paper ²) in addition, with embodiment 1 likewise, obtaining the blank sheet of paper glossiness is 70%, quantitatively is 81.4g/m ²Coated paper for printing.

Embodiment 9

The making of broad leaf tree paper pulp

As the making beating treatment conditions, be 4.4% except making pulp density, import to the 3 machines double disc refiner (material of cutter: 17 chromium of (cutter of use is identical) connection side by side; Cutter is wide: 2.4mm; Groove width: 2.4mm), pull an oar to CSF270ml, likewise obtain broad leaf tree making beating paper pulp with embodiment 1.

The making of body paper

In the slurry that only forms, in paper machine stock tank, add the cationic starch (trade name: Oji Ace K of 0.9% (, being scaled solid constituent) successively with respect to paper pulp by above-mentioned broad leaf tree paper pulp; Oji Cornstarch Co.; Ltd. production), 0.03% (with respect to paper pulp, being scaled solid constituent) is as the AKD sizing agent (trade name: SizepineK-902, waste river chemical production) of internal sizing agent; In the plain boiled water that reclaims, add 0.5% aluminum sulfate then; Mix with above-mentioned pulp then, before fan pump, add aforementioned calcium carbonate (B), make paper ash be divided into 15% as filler.And then before screen cloth, add 0.008% cationic acrylic resin (Ltd. produces for trade name: DR-3015, HYMO Co.), prepare paper stock (concentration is 1.01%).With this paper stock J/W than be 0.995, Vr/Vw than be 1.04, running copies speed for forming ply of paper through Aladdin former under 1500m/ minute the condition, utilize 2 continuous shoe press apparatus to press water after, press water through the roll forming pressing device; Carrying out smoothing handles; After utilizing single hop to arrange the drier drying, use bar metering type size press device, working concentration is the oxidized starch (trade name: Oji Ace A of 4.0 quality %; Oji Cornstarch Co.; Ltd. produce) aqueous solution, carry out size press-treated, make that solid constituent is 1.6g/m ², carry out drying with 2 sections arrangement driers then, logical paper in the calender of mode in machine, obtaining moisture is 4.5%, quantitatively is 47.4g/m ²Coating use body paper.

The manufacturing of coated paper for printing

Except using the aforementioned coating that obtains (quantitatively to be 47.4g/m with body paper ²) in addition, with embodiment 1 likewise, obtain quantitatively being 81.4g/m ²Coated paper for printing, its blank sheet of paper glossiness is 70%.

Embodiment 10

The making of broad leaf tree paper pulp

As the making beating treatment conditions, making pulp density is 4.6%, import 3 machines side by side (cutter of use is identical) double disc refiner of connecting (material of cutter: SUS, cutter is wide: 1.0mm, groove width: 2.0mm), pull an oar to CSF350ml.

The making of body paper

In the slurry that only forms, in paper machine stock tank, add the cationic starch (trade name: Oji Ace K of 1.2% (, being scaled solid constituent) successively with respect to paper pulp by above-mentioned broad leaf tree paper pulp; Oji Cornstarch Co., Ltd. produces), 0.03% (with respect to paper pulp, being scaled solid constituent) be as the AKD sizing agent (trade name: SizepineK-902 of internal sizing agent; Waste river chemical production); In the plain boiled water that reclaims, add 0.5% aluminum sulfate then, mix with above-mentioned pulp then, add 0.2% (with respect to paper pulp; Be scaled solid constituent) amphiprotic polyacrylamide (trade name: Polystron1280; Famine river chemical industrial company produces), before fan pump, add aforementioned calcium carbonate (B) then as filler, make paper ash be divided into 15%.And then the cationic acrylic resin (trade name: DR-3015 of interpolation 0.016% before screen cloth; HYMO Co.; Ltd. produce), behind screen cloth, add 0.015% anionic property acrylic resin (trade name: FA-230, HYMO Co.; Ltd. produce), preparation paper stock (concentration is 1.01%).With this paper stock J/W than be 0.995, Vr/Vw than be 1.04, running copies speed for forming ply of paper through Aladdin former under 1500m/ minute the condition, utilize 2 continuous shoe press apparatus to press water after, press water through the roll forming pressing device; Carrying out smoothing handles; After utilizing single hop to arrange the drier drying, use bar metering type size press device, working concentration is the oxidized starch (trade name: Oji AceA of 4.0 quality %; Oji Cornstarch Co.; Ltd. produce) aqueous solution, carry out size press-treated, make that solid constituent is 1.6g/m ², carry out drying with 2 sections arrangement driers then, logical paper in the calender of mode in machine, obtaining moisture is 4.5%, quantitatively is 47.4g/m ²Coating use body paper.

The manufacturing of coated paper for printing

Except using the aforementioned coating that obtains (quantitatively to be 47.4g/m with body paper ²) in addition, with embodiment 1 likewise, obtain quantitatively being 81.4g/m ²Coated paper for printing, its blank sheet of paper glossiness is 70%.

Embodiment 11

The making of broad leaf tree paper pulp

As the making beating treatment conditions, be 4.6% except making pulp density, import to the 3 machines double disc refiner (material of cutter: SUS of (cutter of use is identical) connection side by side; Cutter is wide: 1.0mm; Groove width: 2.0mm), pull an oar to CSF350ml, likewise obtain broad leaf tree making beating paper pulp with embodiment 4.

The making of body paper

In the slurry that only forms, in paper machine stock tank, add the cationic starch (trade name: Oji Ace K of 0.9% (, being scaled solid constituent) successively with respect to paper pulp by above-mentioned broad leaf tree paper pulp; Oji Cornstarch Co., Ltd. produces), 0.03% (with respect to paper pulp, being scaled solid constituent) be as the AKD sizing agent (trade name: SizepineK-902 of internal sizing agent; Waste river chemical production); In the plain boiled water that reclaims, add 0.5% aluminum sulfate then, mix with above-mentioned pulp then, add 0.1% (with respect to paper pulp; Be scaled solid constituent) amphiprotic polyacrylamide (trade name: Polystron 1280; Famine river chemical industrial company produces), before fan pump, add aforementioned hydrosilicate (B) then as filler, make paper ash be divided into 7%.And then before screen cloth, add 0.016% cationic acrylic resin (Ltd. produces for trade name: DR-3015, HYMO Co.), prepare paper stock (concentration is 1.01%).With this paper stock J/W than be 0.995, Vr/Vw than be 1.05, running copies speed for forming ply of paper through Aladdin former under 1500m/ minute the condition, utilize 2 continuous shoe press apparatus to press water after, press water through the roll forming pressing device; Carrying out smoothing handles; After utilizing single hop to arrange the drier drying, use bar metering type size press device, working concentration is the oxidized starch (trade name: Oji Ace A of 4.0 quality %; Oji Cornstarch Co.; Ltd. produce) aqueous solution, carry out size press-treated, make that solid constituent is 1.6g/m ², carry out drying with 2 sections arrangement driers then, logical paper in the calender of mode in machine, obtaining moisture is 4.5%, quantitatively is 47.4g/m ²Coating use body paper.

The manufacturing of coated paper for printing

Except using the aforementioned coating that obtains (quantitatively to be 47.4g/m with body paper ²) in addition, with embodiment 1 likewise, obtain quantitatively being 81.4g/m ²Coated paper for printing, its blank sheet of paper glossiness is 70%.

Embodiment 12

The making of broad leaf tree paper pulp

As the making beating treatment conditions, be 4.6% except making pulp density, import to the 3 machines double disc refiner (material of cutter: SUS of (cutter of use is identical) connection side by side; Cutter is wide: 1.0mm; Groove width: 2.0mm), pull an oar to CSF350ml, likewise obtain broad leaf tree making beating paper pulp with embodiment 4.

The making of body paper

In the slurry that is only formed by above-mentioned broad leaf tree paper pulp, the aluminum sulfate, 0.9% that in paper machine stock tank, adds 0.5% (with respect to paper pulp, being scaled solid constituent) successively is (with respect to paper pulp; Be scaled solid constituent) cationic starch (trade name: Oji AceK, Oji Cornstarch Co., Ltd. produces), 0.03% (with respect to paper pulp; Be scaled solid constituent) as the AKD sizing agent (trade name: SizepineK-902 of internal sizing agent; Waste river chemical production), then the plain boiled water that reclaims is mixed with above-mentioned pulp, add 0.1% (with respect to paper pulp; Be scaled solid constituent) amphiprotic polyacrylamide (trade name: Polystron 1280; Famine river chemical industrial company produces), before fan pump, add aforementioned calcium carbonate (B) then as filler, make paper ash be divided into 0.5%.And then before screen cloth, add 0.016% cationic acrylic resin (Ltd. produces for trade name: DR-3015, HYMO Co.), prepare paper stock (concentration is 1.01%).With this paper stock J/W than be 0.995, Vr/Vw than be 1.04, running copies speed for forming ply of paper through Aladdin former under 1500m/ minute the condition, utilize 2 continuous shoe press apparatus to press water after, press water through the roll forming pressing device; Carrying out smoothing handles; After utilizing single hop to arrange the drier drying, use bar metering type size press device, working concentration is the oxidized starch (trade name: Oji AceA of 4.0 quality %; Oji Cornstarch Co.; Ltd. produce) aqueous solution, carry out size press-treated, make that solid constituent is 1.6g/m ², carry out drying with 2 sections arrangement driers then, logical paper in the calender of mode in machine, obtaining moisture is 4.5%, quantitatively is 47.4g/m ²Coating use body paper.

The manufacturing of coated paper for printing

Except using the aforementioned coating that obtains (quantitatively to be 47.4g/m with body paper ²) in addition, with embodiment 1 likewise, obtain quantitatively being 81.4g/m ²Coated paper for printing, its blank sheet of paper glossiness is 70%.

Embodiment 13

The making of broad leaf tree paper pulp

As the making beating treatment conditions, be 4.6% except making pulp density, import to the 3 machines double disc refiner (material of cutter: SUS of (cutter of use is identical) connection side by side; Cutter is wide: 1.0mm; Groove width: 2.0mm), pull an oar to CSF350ml, likewise obtain broad leaf tree making beating paper pulp with embodiment 1.

The making of body paper

In the slurry that is only formed by above-mentioned broad leaf tree paper pulp, the aluminum sulfate, 1.5% that in paper machine stock tank, adds 0.5% (with respect to paper pulp, being scaled solid constituent) successively is (with respect to paper pulp; Be scaled solid constituent) cationic starch (trade name: Oji AceK, Oji Cornstarch Co., Ltd. produces), 0.03% (with respect to paper pulp; Be scaled solid constituent) as the AKD sizing agent (trade name: S izepineK-902 of internal sizing agent; Waste river chemical production), then the plain boiled water that reclaims is mixed with above-mentioned pulp, add 0.3% (with respect to paper pulp; Be scaled solid constituent) amphiprotic polyacrylamide (trade name: Polystron 1280; Famine river chemical industrial company produces), before fan pump, add aforementioned calcium carbonate (B) then as filler, make paper ash be divided into 32%.And then the cationic acrylic resin of interpolation 0.016% before screen cloth (Ltd. produces for trade name: DR-3015, HYMO Co.); Anionic property acrylic resin (the trade name: FA-230 of interpolation 0.01% behind screen cloth; HYMOCo., Ltd. produces), preparation paper stock (concentration is 1.01%).With this paper stock J/W than be 0.995, Vr/Vw than be 1.06, running copies speed for forming ply of paper through Aladdin former under 1500m/ minute the condition, utilize 2 continuous shoe press apparatus to press water after, press water through the roll forming pressing device; Carrying out smoothing handles; After utilizing single hop to arrange the drier drying, use bar metering type size press device, working concentration is the oxidized starch (trade name: Oji Ace A of 4.0 quality %; Oji C ornstarch Co.; Ltd. produce) aqueous solution, carry out size press-treated, make that solid constituent is 1.6g/m ², carry out drying with 2 sections arrangement driers then, logical paper in the calender of mode in machine, obtaining moisture is 4.5%, quantitatively is 47.4g/m ²Coating use body paper.

The manufacturing of coated paper for printing

Except using the aforementioned coating that obtains (quantitatively to be 47.4g/m with body paper ²) in addition, with embodiment 1 likewise, obtain quantitatively being 81.4g/m ²Coated paper for printing, its blank sheet of paper glossiness is 70%.

Embodiment 14

The making of broad leaf tree paper pulp

Except bleached hardwood paper pulp (concentration is 4.4 quality %) being imported to the double disc refiner (material of cutter: SUS that 3 machines connect side by side; Cutter is wide: 1.0mm; 2 machines of groove width: 2.0mm and the material of cutter: 17 chromium, cutter is wide: 2.4mm, 1 machine of groove width: 2.4mm is also used) in; Pull an oar to CSF450ml, likewise obtain broad leaf tree making beating paper pulp with embodiment 1.

The making of coniferous tree paper pulp

(material of cutter: 17 chromium, cutter is wide: 4.8mm, groove width: 4.8mm), pull an oar to CSF480ml, likewise obtain coniferous tree making beating paper pulp with embodiment 1 except the double disc refiner that coniferous tree bleached pulp (concentration is 4.4 quality %) imported to 1 machine.

The making of body paper

By aforementioned broad leaf tree paper pulp and coniferous tree paper pulp with coniferous tree: in the pulp that broad leaf tree=10: 90 (mass ratio) mixes; In paper machine stock tank, add the cationic starch (trade name: Oji AceK of the aluminum sulfate, 0.9% (, being scaled solid constituent) of 0.5% (, being scaled solid constituent) successively with respect to paper pulp with respect to paper pulp; Oji Cornstarch Co.; Ltd. production), 0.03% (with respect to paper pulp, being scaled solid constituent) is as the AKD sizing agent (trade name: SizepineK-902, waste river chemical production) of internal sizing agent; Then the plain boiled water that reclaims is mixed with above-mentioned pulp; Add the amphiprotic polyacrylamide (trade name: Polystron 1280, waste river chemical industrial company produces) of 0.1% (, being scaled solid constituent) with respect to paper pulp; Before fan pump, add aforementioned calcium carbonate (B) then, make paper ash be divided into 10% as filler.And then before screen cloth, add 0.016% cationic acrylic resin (Ltd. produces for trade name: DR-3015, HYMO Co.), prepare paper stock (concentration is 1.01%).With this paper stock J/W than be 0.995, Vr/Vw than be 1.08, running copies under fast 1500m/ minute the condition and forms ply of paper through Aladdin former, utilize 2 continuous shoe press apparatus to press water after, press water through the roll forming pressing device; Carrying out smoothing handles; After utilizing single hop to arrange the drier drying, use bar metering type size press device, working concentration is the oxidized starch (trade name: Oji Ace A of 4.0 quality %; Oji Cornstarch Co.; Ltd. produce) aqueous solution, carry out size press-treated, make that solid constituent is 1.6g/m ², carry out drying with 2 sections arrangement driers then, logical paper in the calender of mode in machine, obtaining moisture is 4.5%, quantitatively is 47.4g/m ²Coating use body paper.

The manufacturing of coated paper for printing

Except using the aforementioned coating that obtains (quantitatively to be 47.4g/m with body paper ²) in addition, with embodiment 1 likewise, obtain quantitatively being 81.4g/m ²Coated paper for printing, its blank sheet of paper glossiness is 70%.

Embodiment 15

The making of broad leaf tree paper pulp

Except bleached hardwood paper pulp (concentration is 4.3 quality %) being imported to the double disc refiner (material of cutter: SUS that 3 machines connect side by side; Cutter is wide: 1.0mm; 1 machine of groove width: 2.0mm and the material of cutter: 17 chromium, cutter is wide: 2.4mm, 2 machines of groove width: 2.4mm are also used) in; Pull an oar to CSF450ml, likewise obtain broad leaf tree making beating paper pulp with embodiment 1.

The making of coniferous tree paper pulp

(material of cutter: 17 chromium, cutter is wide: 4.8mm, groove width: 4.8mm), pull an oar to CSF480ml, likewise obtain coniferous tree making beating paper pulp with embodiment 1 except the double disc refiner that coniferous tree bleached pulp (concentration is 4.4 quality %) imported to 1 machine.

The making of size press liquid

By powdered whiting (trade name: Hydrocarb60; BIHOKU FUNKAKOGYO CO., LTD. produces) in the pigment slurry that forms, with respect to 100 parts of pigment; Add 35 parts of starch (trade name: Oji Ace A successively as adhesive; OjiCornstarch Co., Ltd. produces), 5 parts of benzene diene-butadiene copolymer latexes (trade name: OJ-2000, JSR company produces); And then add antifoaming agent and dyestuff as auxiliary agent, prepare final solid component concentration and be 28% size press liquid.

The making of body paper

By aforementioned making beating paper pulp with coniferous tree: in the pulp that broad leaf tree=10: 90 (mass ratio) mixes; In paper machine stock tank, add the cationic starch (trade name: Oji Ace K of the aluminum sulfate, 0.9% (, being scaled solid constituent) of 0.5% (, being scaled solid constituent) successively with respect to paper pulp with respect to paper pulp; OjiCornstarch Co.; Ltd. production), 0.03% (with respect to paper pulp, being scaled solid constituent) is as the AKD sizing agent (trade name: SizepineK-902, waste river chemical production) of internal sizing agent; Then the plain boiled water that reclaims is mixed with above-mentioned pulp; Add the amphiprotic polyacrylamide (trade name: Polystron 1280, waste river chemical industrial company produces) of 0.1% (, being scaled solid constituent) with respect to paper pulp; Before fan pump, add aforementioned calcium carbonate (B) then, make paper ash be divided into 15% as filler.And then before screen cloth, add 0.016% cationic acrylic resin (Ltd. produces for trade name: DR-3015, HYMO Co.), prepare paper stock (concentration is 1.01%).With this paper stock J/W than be 0.995, Vr/Vw than be 1.04, running copies speed for forming ply of paper through Aladdin former under 1500m/ minute the condition, utilize 2 continuous shoe press apparatus to press water after, press water through the roll forming pressing device; Carrying out smoothing handles; After utilizing single hop to arrange the drier drying, use bar metering type size press device, use aforesaid size press liquid; Carry out size press-treated, make that solid constituent is 6.0g/m ², in 2 sections arrangement driers, carry out drying then, logical paper in the calender of mode in machine, obtaining moisture is 4.5%, quantitatively is 55.4g/m ²Coating use body paper.

Table is coated with the preparation of coating layer with pigment application liquid

Adding 0.1 part of (trade name: AronT-50 of the Sodium Polyacrylate as dispersant with respect to the kaolin that will disperse; TOAGO SEI CO., LTD. produces) the aqueous solution in, add 50 parts of kaolin (trade name: Hydrogross 90; J.M.HuberCorporation production), 50 parts of powdered whiting (trade names: Hydrocarb90; BIHOKU FUNKA KOGYO CO., LTD. produces), utilize the Ke Lesi high speed dispersor that it is disperseed the preparation pigment slurry.In this pigment slurry; Add 3 parts of oxidized starchs (trade name: Oji Ace A successively with respect to 100 parts of pigment; Oji Cornstarch Co., Ltd. produces), 8.4 parts of benzene diene-butadiene copolymer latexes (trade name: OJ-2000, JSR company produces); And then add antifoaming agent and dyestuff as auxiliary agent, prepare final solid component concentration and be 66.5% table and be coated with coating layer and use pigment application liquid.

The manufacturing of coated paper for printing

Use is supplied with the Scraper applicator of coating fluid with the fountain mode, (quantitatively is 55.4g/m in the above-mentioned coating that obtains with body paper ²) go up coating and dry aforementioned primary coat coating layer is used pigment application liquid, make that the drying coated amount of each face is 13g/m ², obtain two sides primary coat coated paper.Have the multiple pressure district calender of metallic roll and resin roll to handle with tilted configuration the coated paper that obtains like this, adjustment temperature, line pressure, logical paper slip spare make that the blank sheet of paper glossiness is 70% during processing, obtain quantitatively being 81.4g/m ²Coated paper for printing

Comparative example 1

The making of broad leaf tree paper pulp

As the making beating treatment conditions; Except making pulp density is 4.2%; Import to 3 machines side by side (cutter of use is identical) double disc refiner of connecting (material of cutter: Ni-Hard, cutter is wide: 4.0mm, groove width: 4.0mm); Pull an oar to C SF 450ml, likewise obtain broad leaf tree making beating paper pulp with embodiment 1.

The making of body paper

In the slurry that is only formed by above-mentioned broad leaf tree paper pulp, the aluminum sulfate, 0.9% that in paper machine stock tank, adds 0.5% (with respect to paper pulp, being scaled solid constituent) successively is (with respect to paper pulp; Be scaled solid constituent) cationic starch (trade name: Oji AceK; Oji Cornstarch Co., Ltd. produces), 0.03% (with respect to paper pulp, being scaled solid constituent) be as the AKD sizing agent (trade name: SizepineK-902 of internal sizing agent; Waste river chemical production); Then the plain boiled water that reclaims is mixed with above-mentioned pulp, before fan pump, add aforementioned calcium carbonate (B), make paper ash be divided into 15% as filler.And then before screen cloth, add 0.016% cationic acrylic resin (Ltd. produces for trade name: DR-3015, HYMO Co.), prepare paper stock (concentration is 1.01%).With this paper stock J/W than be 0.995, Vr/Vw than be 1.04, running copies speed for forming ply of paper through Aladdin former under 1500m/ minute the condition, utilize 2 continuous shoe press apparatus to press water after, press water through the roll forming pressing device; Carrying out smoothing handles; After utilizing single hop to arrange the drier drying, use bar metering type size press device, working concentration is the oxidized starch (trade name: OjiAce A of 4.0 quality %; Oji Cornstarch Co.; Ltd. produce) aqueous solution, carry out size press-treated, make that solid constituent is 1.6g/m ², carry out drying with 2 sections arrangement driers then, logical paper in the calender of mode in machine, obtaining moisture is 4.5%, quantitatively is 47.4g/m ²Coating use body paper.

The manufacturing of coated paper for printing

Except using the aforementioned coating that obtains (quantitatively to be 47.4g/m with body paper ²) in addition, with embodiment 1 likewise, obtain quantitatively being 81.4g/m ²Coated paper for printing, its blank sheet of paper glossiness is 70%.

Comparative example 2

The making of broad leaf tree paper pulp

As the making beating treatment conditions, be 4.6% except making pulp density, import to the 3 machines double disc refiner (material of cutter: SUS of (cutter of use is identical) connection side by side; Cutter is wide: 1.0mm; Groove width: 2.0mm), pull an oar to CSF450ml, likewise obtain broad leaf tree making beating paper pulp with embodiment 1.

The making of coniferous tree paper pulp

As the making beating treatment conditions, be 4.5% except making pulp density, (material of cutter: 17 chromium, cutter is wide: 2.3mm, groove width: 2.3mm), pull an oar to CSF480ml, likewise obtain coniferous tree making beating paper pulp with embodiment 1 to import to the double disc refiner of 1 machine.

The making of body paper

By aforementioned making beating paper pulp with coniferous tree: in the pulp that broad leaf tree=30: 70 (mass ratio) mixes, the aluminum sulfate, 0.9% that in paper machine stock tank, adds 0.5% (with respect to paper pulp, being scaled solid constituent) successively is (with respect to paper pulp; Be scaled solid constituent) cationic starch (trade name: Oji Ace K; OjiCornstarch Co., Ltd. produces), 0.03% (with respect to paper pulp, being scaled solid constituent) be as the AKD sizing agent (trade name: SizepineK-902 of internal sizing agent; Waste river chemical production); Then the plain boiled water that reclaims is mixed with aforementioned pulp, add 0.3% amphiprotic polyacrylamide (trade name: Polystron 1280, the production of waste river chemical industrial company) then; Before fan pump, add aforementioned calcium carbonate (B) then, make paper ash be divided into 15% as filler.And then before screen cloth, add 0.016% cationic acrylic resin (trade name: DR-3015 successively; HYMO Co., Ltd. produces), 0.01% anionic property acrylic resin (trade name: FA-230, HYMOCo.; Ltd. produce), preparation paper stock (concentration is 1.01%).With this paper stock J/W than be 0.995, Vr/Vw than be 1.06, running copies speed for forming ply of paper through Aladdin former under 1500m/ minute the condition, utilize 2 continuous shoe press apparatus to press water after, press water through the roll forming pressing device; Carrying out smoothing handles; After utilizing single hop to arrange the drier drying, use bar metering type size press device, working concentration is the oxidized starch (trade name: Oji Ace A of 4.0 quality %; Oji Cornstarch Co.; Ltd. produce) aqueous solution, carry out size press-treated, make that solid constituent is 1.6g/m ², carry out drying with 2 sections arrangement driers then, logical paper in the calender of mode in machine, obtaining moisture is 4.5%, quantitatively is 47.4g/m ²Coating use body paper.

The manufacturing of coated paper for printing

Except using the aforementioned coating that obtains (quantitatively to be 47.4g/m with body paper ²) in addition, with embodiment 1 likewise, obtain quantitatively being 81.4g/m ²Coated paper for printing, its blank sheet of paper glossiness is 70%.

Comparative example 3

The making of broad leaf tree paper pulp

As the making beating treatment conditions, be 4.2% except making pulp density, import to the double disc refiner (material of cutter: SUS that 3 machines connect side by side; Cutter is wide: 1.0mm; 1 machine of groove width: 2.0mm and the material of cutter: 17 chromium, cutter is wide: 2.4mm, 2 machines of groove width: 2.4mm are also used) in; Pull an oar to CSF320ml, likewise obtain broad leaf tree making beating paper pulp with embodiment 1.

The making of body paper

In the slurry that is only formed by above-mentioned broad leaf tree paper pulp, the aluminum sulfate, 0.9% that in paper machine stock tank, adds 0.5% (with respect to paper pulp, being scaled solid constituent) successively is (with respect to paper pulp; Be scaled solid constituent) cationic starch (trade name: Oji AceK, Oji Cornstarch Co., Ltd. produces), 0.03% (with respect to paper pulp; Be scaled solid constituent) as the AKD sizing agent (trade name: SizepineK-902 of internal sizing agent; Waste river chemical production), then the plain boiled water that reclaims is mixed with above-mentioned pulp, add 0.1% (with respect to paper pulp; Be scaled solid constituent) amphiprotic polyacrylamide (trade name: Polystron 1280; Famine river chemical industrial company produces), before fan pump, add aforementioned calcium carbonate (B) then as filler, make paper ash be divided into 15%.And then before screen cloth, add 0.016% cationic acrylic resin (Ltd. produces for trade name: DR-3015, HYMO Co.), prepare paper stock (concentration is 1.01%).With this paper stock J/W than be 0.995, Vr/Vw than be 1.04, running copies speed for forming ply of paper through Aladdin former under 1500m/ minute the condition, utilize 2 continuous shoe press apparatus to press water after, press water through the roll forming pressing device; Carrying out smoothing handles; After utilizing single hop to arrange the drier drying, use bar metering type size press device, working concentration is the oxidized starch (trade name: Oji AceA of 4.0 quality %; Oji Cornstarch Co.; Ltd. produce) aqueous solution, carry out size press-treated, make that solid constituent is 1.6g/m ², carry out drying with 2 sections arrangement driers then, logical paper in the calender of mode in machine, obtaining moisture is 4.5%, quantitatively is 47.4g/m ²Coating use body paper.

The manufacturing of coated paper for printing

Except using the aforementioned coating that obtains (quantitatively to be 47.4g/m with body paper ²) in addition, with embodiment 1 likewise, obtain quantitatively being 81.4g/m ²Coated paper for printing, its blank sheet of paper glossiness is 70%.

Comparative example 4

The making of broad leaf tree paper pulp

As the making beating treatment conditions, be 4.4% except making pulp density, import to the 3 machines double disc refiner (material of cutter: SUS of (cutter of use is identical) connection side by side; Cutter is wide: 1.0mm; Groove width: 2.0mm), pull an oar to C SF450ml, likewise obtain broad leaf tree making beating paper pulp with embodiment 1.

The making of coniferous tree paper pulp

As the making beating treatment conditions, be 4.4% except making pulp density, (material of cutter: 17 chromium, cutter is wide: 4.8mm, groove width: 4.8mm), pull an oar to CSF480ml, likewise obtain coniferous tree making beating paper pulp with embodiment 1 to import to the double disc refiner of 1 machine.

The making of body paper

By aforementioned making beating paper pulp with coniferous tree: in the pulp that broad leaf tree=30: 70 (mass ratio) mixes, the aluminum sulfate, 0.9% that in paper machine stock tank, adds 0.5% (with respect to paper pulp, being scaled solid constituent) successively is (with respect to paper pulp; Be scaled solid constituent) cationic starch (trade name: Oji Ace K; OjiCornstarch Co., Ltd. produces), 0.03% (with respect to paper pulp, being scaled solid constituent) be as the AKD sizing agent (trade name: Size pineK-902 of internal sizing agent; Waste river chemical production); Then the plain boiled water that reclaims is mixed with aforementioned pulp, add 0.1% amphiprotic polyacrylamide (trade name: Polystron 1280, the production of waste river chemical industrial company) then; Before fan pump, add aforementioned calcium carbonate (B) then, make paper ash be divided into 15% as filler.And then before screen cloth, add 0.016% cationic acrylic resin (trade name: DR-3015 successively; HYMO Co., Ltd. produces), 0.01% anionic property acrylic resin (trade name: FA-230, HYMOCo.; Ltd. produce), preparation paper stock (concentration is 1.01%).With this paper stock J/W than be 0.995, Vr/Vw than be 1.06, running copies speed for forming ply of paper through Aladdin former under 1500m/ minute the condition, utilize 2 continuous shoe press apparatus to press water after, press water through the roll forming pressing device; Carrying out smoothing handles; After utilizing single hop to arrange the drier drying, use bar metering type size press device, working concentration is the oxidized starch (trade name: Oji Ace A of 4.0 quality %; Oji Cornstarch Co.; Ltd. produce) aqueous solution, carry out size press-treated, make that solid constituent is 1.6g/m ², carry out drying with 2 sections arrangement driers then, logical paper in the calender of mode in machine, obtaining moisture is 4.5%, quantitatively is 47.4g/m ²Coating use body paper.

The manufacturing of coated paper for printing

Except using the aforementioned coating that obtains (quantitatively to be 47.4g/m with body paper ²) in addition, with embodiment 1 likewise, obtain quantitatively being 81.4g/m ²Coated paper for printing, its blank sheet of paper glossiness is 70%.

Comparative example 5

The making of broad leaf tree paper pulp

As the making beating treatment conditions, be 4.4% except making pulp density, import to the 3 machines double disc refiner (material of cutter: SUS of (cutter of use is identical) connection side by side; Cutter is wide: 1.0mm; Groove width: 2.0mm), pull an oar to CSF400ml, likewise obtain broad leaf tree making beating paper pulp with embodiment 1.

The making of coniferous tree paper pulp

As the making beating treatment conditions, be 4.4% except making pulp density, (material of cutter: 17 chromium, cutter is wide: 4.8mm, groove width: 4.8mm), pull an oar to CSF480ml, likewise obtain coniferous tree making beating paper pulp with embodiment 1 to import to the double disc refiner of 1 machine.

The making of body paper

By aforementioned making beating paper pulp with coniferous tree: in the pulp that broad leaf tree=30: 70 (mass ratio) mixes; In paper machine stock tank, add 0.5% successively (with respect to paper pulp; Be scaled solid constituent) the cationic starch (trade name: Oji Ace K, OjiCornstarch Co. of aluminum sulfate, 0.9% (, being scaled solid constituent) with respect to paper pulp; Ltd. production), 0.03% (with respect to paper pulp; Be scaled solid constituent) as the AKD sizing agent (trade name: SizepineK-902, waste river chemical production) of internal sizing agent, then the plain boiled water that reclaims is mixed with aforementioned pulp; Before fan pump, add aforementioned calcium carbonate (B), make paper ash be divided into 15% as filler.And then before screen cloth, add 0.016% cationic acrylic resin (Ltd. produces for trade name: DR-3015, HYMO Co.), prepare paper stock (concentration is 1.01%).With this paper stock J/W than be 0.989, Vr/Vw than be 1.07, running copies speed for forming ply of paper through Aladdin former under 1500m/ minute the condition, utilize 2 continuous shoe press apparatus to press water after, press water through the roll forming pressing device; Carrying out smoothing handles; After utilizing single hop to arrange the drier drying, use bar metering type size press device, working concentration is the oxidized starch (trade name: Oji Ace A of 4.0 quality %; OjiCornstarch Co.; Ltd. produce) aqueous solution, carry out size press-treated, make that solid constituent is 1.6g/m ², carry out drying with 2 sections arrangement driers then, logical paper in the calender of mode in machine, obtaining moisture is 4.5%, quantitatively is 47.4g/m ²Coating use body paper.

The manufacturing of coated paper for printing

Except using the aforementioned coating that obtains (quantitatively to be 47.4g/m with body paper ²) in addition, with embodiment 1 likewise, obtain quantitatively being 81.4g/m ²Coated paper for printing, its blank sheet of paper glossiness is 70%.

The evaluation of coated paper for printing

Weight average fiber length, the fiber length distribution coefficient of disassociation paper pulp

With the paper pulp dissociation methods disassociation of paper base material according to JIS P 8220 records, the Fiber L ab that the fibre length of the disassociation paper pulp that obtains adopts Kajaani company to produce measures, and tries to achieve weight average fiber length (W) and number average fiber length (M).Then, calculate the fiber length distribution coefficient in the formula with weight average fiber length (W) and number average fiber length (M) substitution weight average fiber length (W)/number average fiber length (M).

The aspect ratio of tensile strength

Method with JIS P 8113:2006 defined is a benchmark, measures tensile strength and horizontal tensile strength longitudinally, calculates aspect ratio (tensile strength/horizontal tensile strength longitudinally).

Internal bond strength

According to the method for JAPAN TAPPI paper pulp test method No.18-2:2000 (the inner test method(s) that combines) (internal bond tester) defined, measure the interlaminar strength of coated paper.

Rigidity

Method according to JIS P 8143:1996 " stiffness measuring method of the clarke rigidometer (Clarkstiffness tester) of employing paper " defined; Measure the rigidity of coated paper; Try to achieve geometrical mean (the damping environment: 23 ± 1 ℃, 50 ± 2%RH).

The freeness of raw material paper pulp

According to JIS P 8121, measure the freeness that the raw material paper pulp that obtains is handled in making beating.

The freeness of disassociation paper pulp

According to the paper pulp dissociation methods disassociation paper base material of JIS P 8220 records,, measure the freeness of the disassociation paper pulp that obtains thus according to JIS P8121.

The apparent specific gravity of filler

According to the method for JIS K 6220-1:2001 " rubber with compounding ingredient-test method-the 1st one: general " defined, measure the apparent specific gravity of filler.

Absorptivity

Utilize the intensity I of the corresponding incident light of filler slurry under spectrophotometric determination and the various concentration ₀, the intensity I of transmitted light.Thickness with the absorbing material layer is d, when concentration is c, according to using log ₁₀(I ₀/ I)=the represented Lambert-Beer's law calculating molar absorption coefficient (ε) of ε cd.

Average grain diameter

Microtrac particle size distribution device (MT3000) the mensuration average grain diameter of using day machine dress company to produce.

Fitting property of web offset printing (wheel changes the offset printing fold)

Use web offset printing machine (the Lithopia L-BT3-1100 of Mitsubishi; Mitsubishi Heavy Industries Ltd company produces); By the two sides is 4 chroman patterns, and one of them face is that 4 chroman patterns, another side are the combination pattern of rose pink pattern, and print speed printing speed was made as 330m/ minute; The paper surface temperature of drying machine outlet is made as 120 ℃, feed 10 ℃ in through the chill roll behind the drying machine cooling water prints, and implements folding continuously processing.After the printing, according to the degree of following determinating reference visual valuation wheel commentaries on classics offset printing fold.

(excellent) 6 → 1 (bad)

6: not producing wheel fully changes the offset printing fold.

5: a part produces the wide wheel of width changes the offset printing fold, but the degree of depth of fold is superficial, is complete no problem level in practicality.

4: the whole wide wheel of width that produces changes the offset printing fold, but the degree of depth of fold is superficial, is level no problem in practicality.

3: the wheel that a part produces narrow width changes the offset printing fold, but the depth as shallow of fold is level no problem in practicality.

2: the whole wide wheel of a large amount of width that produces changes the offset printing fold, and the degree of depth of fold is moderate, is in-problem level in practicality.

1: because the whole wheel that produces a large amount of narrow width changes the offset printing fold, the degree of depth of fold is also darker, and is wrinkling during bookbinding, in practicality, there being the level of big problem.

(printing quality): print gloss

In the RI printing machine, use 0.1cc printing ink (Values-G type, big Japanese ink chemical industrial company system) to print, through the visual print gloss of estimating.

◎: printing quality is excellent especially.

Zero: printing quality is excellent.

△: printing quality is poor slightly.

*: printing quality is poor.

Property is fitted in anti-foaming

Coated paper for printing immersed in 180 ℃ the oil bath 1 minute, and adopted following benchmark through the visual foaming situation occurred of judging aforementioned coated paper.

(excellent) 6 → 1 (bad)

6: do not observe foaming fully, be extremely excellent level.

5: do not observe foaming basically, be the level of excellence.

4: observe the fine foaming of minute quantity, but be level no problem in practicality.

3: observe a small amount of thin foaming, but be level no problem in practicality.

2: obviously observe foaming, be in-problem level in practicality.

1: observe a large amount of foamings, be in-problem level in practicality.

Quality

Estimate the printing opacity quality of body paper through the following benchmark of visual employing.

◎: very good.

Zero: good.

△: poor slightly, but be level no problem in practicality.

*: extreme difference is unpractical level.

Overall merit

Overall merit as coated paper for printing adopts following benchmark to judge.

◎: very good.

Zero: good.

△: poor slightly, but no problem in practicality.

*: extreme difference is unpractical level.

Can know that by table 1 as printing, coated paper for printing of the present invention has extremely excellent performance.

Utilizability on the industry

Coated paper for printing fine texture of the present invention, intensity between ply of paper, rigidity are strong, and the generation of fold, foaming in the time of can suppressing web offset printing as printing, has extremely excellent quality.

Claims (5)

1. coated paper for printing; It is characterized in that; 50 quality % of the employed bleached pulp of paper stock are above to be raw material with eucalyptus material or Acacia material; The cooking process that this bleached pulp adds cooking liquor through gradation makes by paper pulpization and then through the multistage bleaching treatment process, and wherein this coated paper for printing is processed via following operation:

Paper stock is ejected between 2 nets that constitute the loop from head box, and forms the operation of l Water Paper at the wet end of the Aladdin former type that forms ply of paper of dewatering with forming rolls and/or shaping boots;

In press section, the operation of utilizing the wet pressing device of the boots formula more than 1 l Water Paper to be pressed water;

In drying section, the dry initial stage before surface treatment is utilized the operation of the dry l Water Paper of single hop arrange type drier at least;

And use transfer printing type size press device to carry out surface treatment, at least one face of the body paper that obtains through surface treatment, being provided with more than 1 layer with pigment and adhesive is the operation of the pigment application layer of principal component,

The weight average fiber length disassociation paper pulp that the paper pulp dissociation methods that adopts JIS P 8220:1998 record obtains aforementioned coated paper for printing disassociation, that record according to the paper pulp fiber length test method of the automatic instrumentation method of optics of JAPAN TAPPI No.52:2000 defined is that 0.6～2.0mm, fiber length distribution coefficient are 1.5～4.0, and the aspect ratio of the tensile strength of the aforementioned coated paper for printing that records according to JIS P 8113:2006 is below 3.0.

2. coated paper for printing according to claim 1 is characterized in that, the aspect ratio of the tensile strength of said coated paper for printing is 1.3～3.0.

3. coated paper for printing according to claim 1 and 2 is characterized in that, the final nip of said press section is the roll forming squeezing, and its leading portion is a shoe press.

4. coated paper for printing according to claim 1 is characterized in that, said disassociation paper pulp is 250～500ml according to the freeness that JI S P 8121:1995 records.

5. coated paper for printing according to claim 1; It is characterized in that; Said body paper contains 1～30 quality % filler; Wherein this filler is below 0.5 according to the apparent specific gravity that JI S K 6220-1:2001 records, and is more than 5.0 according to the molar absorption coefficient of Lambert-Beer's law, and average grain diameter is more than the 1 μ m.