LU102253B1 - Method for making of coated two side art paper with high bulk and high gloss - Google Patents
Method for making of coated two side art paper with high bulk and high gloss Download PDFInfo
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- LU102253B1 LU102253B1 LU102253A LU102253A LU102253B1 LU 102253 B1 LU102253 B1 LU 102253B1 LU 102253 A LU102253 A LU 102253A LU 102253 A LU102253 A LU 102253A LU 102253 B1 LU102253 B1 LU 102253B1
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- coating
- pulp
- pressure
- blade
- bulk
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- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000000576 coating method Methods 0.000 claims abstract description 215
- 239000011248 coating agent Substances 0.000 claims abstract description 186
- 239000000123 paper Substances 0.000 claims abstract description 60
- 239000002655 kraft paper Substances 0.000 claims abstract description 36
- 229920001131 Pulp (paper) Polymers 0.000 claims abstract description 24
- 150000002978 peroxides Chemical class 0.000 claims abstract description 21
- 239000011121 hardwood Substances 0.000 claims abstract description 18
- 239000011122 softwood Substances 0.000 claims abstract description 18
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 64
- 239000002245 particle Substances 0.000 claims description 56
- 239000000463 material Substances 0.000 claims description 38
- 239000004816 latex Substances 0.000 claims description 36
- 229920000126 latex Polymers 0.000 claims description 36
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 32
- 229920002472 Starch Polymers 0.000 claims description 26
- 239000008107 starch Substances 0.000 claims description 26
- 235000019698 starch Nutrition 0.000 claims description 26
- 239000007787 solid Substances 0.000 claims description 24
- 238000003490 calendering Methods 0.000 claims description 22
- 239000002174 Styrene-butadiene Substances 0.000 claims description 18
- MTAZNLWOLGHBHU-UHFFFAOYSA-N butadiene-styrene rubber Chemical compound C=CC=C.C=CC1=CC=CC=C1 MTAZNLWOLGHBHU-UHFFFAOYSA-N 0.000 claims description 18
- 239000011115 styrene butadiene Substances 0.000 claims description 18
- 229920003048 styrene butadiene rubber Polymers 0.000 claims description 18
- 125000002091 cationic group Chemical group 0.000 claims description 14
- 239000003292 glue Substances 0.000 claims description 12
- 238000001035 drying Methods 0.000 claims description 8
- 238000002156 mixing Methods 0.000 claims description 7
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 6
- 238000006467 substitution reaction Methods 0.000 claims description 6
- 238000012546 transfer Methods 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 238000000227 grinding Methods 0.000 claims description 5
- 239000010410 layer Substances 0.000 abstract description 29
- 238000005452 bending Methods 0.000 abstract description 8
- 239000002356 single layer Substances 0.000 abstract description 5
- 239000008199 coating composition Substances 0.000 abstract description 2
- 238000010008 shearing Methods 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 6
- 238000004537 pulping Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 230000001268 conjugating effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
- D21G9/00—Other accessories for paper-making machines
- D21G9/009—Apparatus for glaze-coating paper webs
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
- D21D1/00—Methods of beating or refining; Beaters of the Hollander type
- D21D1/02—Methods of beating; Beaters of the Hollander type
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
- D21D1/00—Methods of beating or refining; Beaters of the Hollander type
- D21D1/20—Methods of refining
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F11/00—Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
- D21G1/00—Calenders; Smoothing apparatus
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H11/00—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only
- D21H11/02—Chemical or chemomechanical or chemothermomechanical pulp
- D21H11/04—Kraft or sulfate pulp
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H11/00—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only
- D21H11/08—Mechanical or thermomechanical pulp
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/20—Macromolecular organic compounds
- D21H17/21—Macromolecular organic compounds of natural origin; Derivatives thereof
- D21H17/24—Polysaccharides
- D21H17/28—Starch
- D21H17/29—Starch cationic
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/63—Inorganic compounds
- D21H17/67—Water-insoluble compounds, e.g. fillers, pigments
- D21H17/675—Oxides, hydroxides or carbonates
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H19/00—Coated paper; Coating material
- D21H19/36—Coatings with pigments
- D21H19/38—Coatings with pigments characterised by the pigments
- D21H19/385—Oxides, hydroxides or carbonates
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H19/00—Coated paper; Coating material
- D21H19/36—Coatings with pigments
- D21H19/44—Coatings with pigments characterised by the other ingredients, e.g. the binder or dispersing agent
- D21H19/54—Starch
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H19/00—Coated paper; Coating material
- D21H19/80—Paper comprising more than one coating
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H23/00—Processes or apparatus for adding material to the pulp or to the paper
- D21H23/02—Processes or apparatus for adding material to the pulp or to the paper characterised by the manner in which substances are added
- D21H23/22—Addition to the formed paper
- D21H23/32—Addition to the formed paper by contacting paper with an excess of material, e.g. from a reservoir or in a manner necessitating removal of applied excess material from the paper
- D21H23/34—Knife or blade type coaters
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Paper (AREA)
Abstract
The invention discloses a method for papermaking of a coated two side art paper with high bulk and high gloss. In the present invention, through a selection of a pulp, a northern bleached softwood kraft pulp, a bleached hardwood kraft pulp and 100% an alkaline peroxide mechanical pulp with high bulk are adopted, and the weight ratio of each pulp is strictly controlled, furthermore, a specific coating formula is used, and based on the papermaking of the base paper with and the single-layer and the gap former machine, a unique MSP coating and a blade coating process are adopted for a multi-layer coating on a high-speed paper machine with a speed up to 1300 m/min, parameters such as the blade pressure and the blade angle of each a coating head are adjusted such that the final papermaking paper has a basis weight of about 170 g/m2, the bulk more than 1 cm3/g, the gloss of 60%-70%, smoothness more than 600 s and bending stiffness more than 2.4 mNm.
Description
METHOD FOR MAKING OF COATED TWO SIDE ART PAPER WITH HIGH BULK 02259
[0001] The invention relates to the technical field of papermaking, in particular to a method for making a coated two side art paper with high bulk and high gloss.
[0002] Coated two side art paper is characterized by a paper surface that is exquisite, smooth, and glossy, which is conducive to obtaining beautiful and clear patterns and texts after printing. Coated two side art paper is mainly used for printing high-end books, periodicals and magazines, various commercial advertisements, color pictorials, children's books, and other printed materials. Bulk is a key index of coated paper. It determines the opacity and stiffness of the coated paper to a great extent and has a significant impact on product cost and product properties. For these reasons, the bulk of paper has attracted much attention from consumers. Currently, most of the commercially available high bulk coated two side art paper is made by a fourdrinier machine that operates at a low speed. The coated two side art paper made by a single-layer gap former machine has a bulk of less than 1.00 cm*/g, generally between 0.80 cm’/g - 0.90 cm?/g, which fails to meet bulk requirements. A small part of such coated two side art paper made by the single-layer gap former machine satisfies the bulk requirements. However, due to the use of a relatively high proportion of mechanical pulp, the paper product has great roughness, relatively low gloss and smoothness.
[0003] In view of the drawbacks of the prior art, the present invention provides a method for making a coated two side art paper with high bulk and high gloss. Compared with most of the coated two side art paper in the market that is made by a fourdrinier machine operating at a low speed or a gap former machine operating at a speed below 1300 m/min, the coated two side art paper product developed by the present invention has relatively high bulk and high gloss; it is made from a base paper, by a single-layer gap former machine operating at a speed of up to
1300 m/min. The present application adopts a unique process that comprises MSP coating 102258 (Metering Size Press coating, which is a double-sided coating) and blade coating.
[0004] The technical solution adopted by the present invention is as follows: a method of papermaking of a coated two side art paper with high bulk and high gloss, it comprises steps of:
[0005] (1) dispersing an alkaline peroxide mechanical pulp by a deflaker to obtain a pulp with a freeness of 300 ml - 400 ml and a bulk of > 3.0 cm*/g; mixing 50-60 wt% of bleached hardwood kraft pulp, 10-20 wt% of northern bleached softwood kraft pulp, and 30-40 wt% of the dispersed alkaline peroxide mechanical pulp to obtain a mixed pulp;
[0006] (2) adding ground calcium carbonate and a cationic starch to the mixed pulp of step (1), wherein the ground calcium carbonate is 10%-14% of the weight of the mixed pulp, and the cationic starch is added at an amount of 6 kg-8 kg per ton of the mixed pulp; feeding the prepared pulp into a headbox of a gap former machine through a wet end after the prepared pulp is filtered to be purified,
[0007] (3) forming a wet web in the gap former machine at a wire speed of 1300 m/min-1400 m/min and a pulp-to-wire speed ratio of 1.04-1.05;
[0008] (4) squeezing the wet web and drying the squeezed wet web in a dryer at a pre-drying stage to form an uncoated base paper with a basis weight of 110 g/m°-115 g/m? and a water content of 4%-6%;
[0009] (5) coating both sides of the uncoated base paper with a liquid starch glue on an applicator roll, each side has a coating amount of 1 g/m°-4 g/m?;
[0010] (6) carrying out base coating on the base paper prepared by step (5) through film transfer coating to from a base coating, wherein a pressure between a measuring rod and an upper roll that are fored together for the base coating 1s 1.5 bar - 1.7 bar, a pressure between a measuring rod and a lower roll that are fored together for the base coating is 1.5 bar - 1.7 bar, coating quantity is 18 g/m°-20 g/m?; a coating material for the base coating comprises the following components in percentage by weight: 100% of ground calcium carbonate with >65%
of its particle having a particle size of less than 2 um, 4%-7% of a styrene-butadiene latex, and 102259 10%-15% of a biological latex, the coating material has a solid content of 62%-66%, a low shear viscosity of 400 cps-600 cps;
[0011] (7) carrying out double medium coatings on the base coating with a blade after performing step (6) to form two layers of medium coatings, each layer of the medium coating has a coating amount of 10 g/m*-12 g/m?; wherein the blade for medium coating has a pressure of 40%-55% and a blade angle of 30 degrees -40 degrees; a coating material for medium coating comprises the following components in percentage by weight: 100% of ground calcium carbonate with >65% of its particle having a particle size of less than 2 um, 4%-7% of a styrene-butadiene latex, and 5%-8% of a biological latex, the coating material has a solid content of 62%-66%, a low shear viscosity of 800 cps-1000 cps;
[0012] (8) carrying out double surface coatings on the medium coatings after performing step (7) to form two layers of surface coatings, each layer of the surface coating has a coating amount of 9 g/m°-12 g/m?; wherein a blade for surface coating has a pressure of 40%-55% and a blade angle of 30 degrees - 40 degrees; a coating material for surface coating comprises the following components in percentage by weight: 90%-97% of ground calcium carbonate with >98% of its particle having a particle size of less than 2 um, 3%-5% of porcelain clay with >90% of its particle having a particle size of 1 um, 7%-10% of a styrene-butadiene latex, and 1%-3% of a biological latex; the coating material has a solid content of 68%-70%, a low shear viscosity of 1200 cps-1400 cps;
[0013] (9) calendaring the base paper prepared by step (8) in a calendar, wherein a calendering mode of the calender is an 8-nip, press sections in the calender are a second pressure area, a forth pressure area, a seventh pressure area, and a ninth pressure area, a calendering temperature is 150 °C-180°C and a line pressure is 40 kN/m-50 kN/m.
[0014] Preferably, in step (1), dispersing and grinding the bleached hardwood kraft pulp and the northern bleached softwood kraft pulp separately before the mixing to prepare the bleached hardwood kraft pulp and the northern bleached softwood kraft pulp with a freeness of 400 ml - 500 ml and a bulk of 1.25 cm*/g - 1.35 cm¥/g.
[0015] Preferably, before the mixing, dispersing the alkaline peroxide mechanical pulp while skipping grinding the alkaline peroxide mechanical pulp; an inlet and an outlet of the deflaker respectively have a pressure 2.0 bar - 4.0 bar.
[0016] Preferably, in step (2), the ground calcium carbonate has <65% of its particles with a particle size of less than 2 um, the cationic starch has a degree of substitution of 0.028-0.032.
[0017] Preferably, in step (5), the glue is prepared by an enzyme-digested starch, and has a solid content of 10% and a viscosity of 25 cps.
[0018] Preferably, in medium coating, a blade for a first coating step of medium coating has a pressure of 42% and a blade angle of 40 degrees; a blade for a second coating step of medium coating has a pressure of 45% and a blade angle of 40 degrees.
[0019] Preferably, in surface coating, a blade for a first coating step of surface coating has a pressure of 38% and a blade angle of 35 degrees; a blade for a second coating step of surface coating has a pressure of 40% and a blade angle of 35 degrees.
[0020] Preferably, in step (9), the calendering temperature at the second pressure area and the forth pressure area is 150°C, the calendering temperature at the seventh pressure area and the ninth pressure area is 180°C, and the line pressure is 40 kN/m - 50 kN/m.
[0021] Through the method of the invention, a coated two side art paper with high bulk, high gloss, high smoothness and good bending stiffness is successfully made.
[0022] Compared with the prior art, the beneficial effects of the present invention are as follows:
[0023] In the present invention, a specific type of pulp is chosen: 100% of a high bulk alkaline peroxide mechanical pulp is used (its bulk is above 3.0 cm*/g), and its quantity is strictly controlled so that it is at an appropriate ratio to the other pulp used (northern bleached softwood kraft pulp and bleached hardwood kraft pulp). To maintain the bulk of the alkaline peroxide mechanical pulp, pulp grinding is skipped during pulp preparation, only pulp dispersion is carried out with a deflaker until the pulp has a freeness of about 350 ml. In this way, the bulk of the pulp is > 3.0 cm*/g; the bulk, the roughness, etc, of the base paper meet quality requirements. The present invention uses a unique coating formulation; and the paper is 102259 made from a base paper by a single-layer gap former machine operating at a speed of up to 1300 m/min. The present application adopts a unique multi-layered coating process that comprises MSP coating and blade coating. Parameters including blade pressure and blade angle 5 of the coating head are adjusted such that the final paper product has a basis weight of about 170 g/m°, a bulk of more than 1 cm?/g, a gloss of 60% - 70%, a smoothness of more than 600 s and a bending stiffness of more than 2.4 mNm. To summarize, the present invention successfully produces a coated paper having high bulk, high gloss, high smoothness, and good bending stiffness through the coordination of a number of features and processes including the pulp, the coating design, the coating process, and the calendaring process in a high-speed gap former machine.
[0024] In the present invention, it was discovered that the gloss, the smoothness, and the bending stiffness can be further improved by the use of different blade pressure, blade angles, calendering temperatures, and line pressure.
[0025] The present invention will be further illustrated in detail by specific embodiments.
[0026] The experimental methods used in the embodiments of the present invention are all conventional methods unless otherwise specified.
[0027] The materials and reagents used in the embodiments of the present invention can be obtained from commercial sources unless otherwise specified.
[0028] Embodiment 1
[0029] A method for making of a coated two side art paper with high bulk and high gloss, comprising the following steps:
[0030] (1) an alkaline peroxide mechanical pulp was dispersed by a deflaker (a pressure at an inlet and an outlet of the deflaker is 2.0 bar-4.0 bar) to prepare a pulp with freeness of 300 ml and a bulk of 3.1 cm*/g; bleached hardwood kraft pulp was dispersed and ground to obtain the pulp with the freeness of 400 ml and the bulk of 1.26 cm®/g; northern bleached softwood kraft 102258 pulp was dispersed and ground to obtain the pulp with the freeness of 405 ml and the bulk of
1.25 cm*/g; 50 wt% of the bleached hardwood kraft pulp, 10 wt% of the northern bleached softwood kraft pulp and 40 wt% of the alkaline peroxide mechanical pulp were mixed;
[0031] (2) a ground calcium carbonate (the content of particles with a particle size less than 2 um is < 65%) and a cationic starch (a degree of substitution is 0.028) was added to the mixed pulp of step (1), wherein the ground calcium carbonate is 14% of the weight of the mixed pulp, the cationic starch is added at an amount of 6 kg per ton of the mixed pulp, and the prepared pulp was fed into a headbox of a gap former machine through a wet end after the prepared pulp is filtered to be purified;
[0032] (3) the gap former machine comprised the lead box, a forming wire and a felt shower. The pulp was set into the headbox by a wet end flow system, and then sprayed onto the wire to dewater to form a shape, followed by further dewatered on the felt shower. A wet web was formed in the gap former machine at a wire speed of 1300 m/min and a pulp-to-wire speed ratio of 1.04;
[0033] (4) the wet web was squeezed and the squeezed was dried in a dryer at a pre-drying stage to form an uncoated base paper with a basis weight of 110 g/m? and water content of 6%;
[0034] (5) both sides of the base paper was coated with a starch glue liquid on an applicator roll, and each side has a coating amount of 1.0 g/m? the glue was prepared by an enzyme-digested starch, and has a solid content of 12% and a viscosity of 30 cps;
[0035] (6) base coating was carried out on the base paper prepared by step (5) through film transfer coating to from a base coating, wherein a pressure between a measuring rod and an upper roll that are fored together for the base coating is 1.5 bar, a pressure between a measuring rod and a lower roll that are fored together for the base coating is 1.7 bar, coating quantity was 18 g/m’; a coating material for the base coating comprised the following components in percentage by weight: 100% of ground calcium carbonate with > 65% of its particle having a particle size of less than 2 um, 4% of a styrene-butadiene latex, and 10% of a biological latex, the coating material has a solid content of 66%, a low shearing viscosity was 600 cps;
[0036] (7) double medium coating was carried out on the base coating with a blade after performing step (6) to form two layers of medium coatings, each layer of the medium coating has a coating amount of 10 g/m”-11 g/m?; wherein the blade for medium coating has a pressure of 40% and a blade angle of 30 degree, the total coating amount on both layers was 20.7 g/m”; a coating material for the medium coating comprised the following components in percentage by weight: 100% of the ground calcium carbonate with > 65% of its particle size less than 2 pum, 4% of a styrene-butadiene latex, and 5% of a biological latex, the coating material has a solid content of 62%, a low shear viscosity of 800 cps;
[0037] (8) double surface coatings was carried out on the medium coatings after performing step (7) to form two layers of surface coatings, each layer has a coating amount of 9 g/m°-10 g/m”, wherein a blade for surface coating has a pressure of 40%, and a blade angle of 30 degree, the total coating amount on both layers was 18.9 g/m”; a coating material for the surface coating comprised the following components in percentage by weight: 90% of ground calcium carbonate with > 98% of its particle having a particle size of less than 2 um, 3% of porcelain clay with > 90% of its particle having a particle size less than 1 um, 7% of a styrene-butadiene latex, and 1% of a biological latex; the coating material has a solid content of 68%, a low shearing viscosity of 1200 cps;
[0038] (9) the base paper prepared by step (8) was calendared in a calendar, wherein Janus Calender MK2 from Voith GmbH was used, a calendering mode of the calender is an 8-nip, press sections in the calender are a second pressure area, a forth pressure area, a seventh pressure area, and a ninth pressure area, a calendering temperature is 150 °C and a line pressure is 50 kN/m.
[0039] Embodiment 2
[0040] A method for making of a coated two side art paper with high bulk and high gloss, comprising the following steps:
[0041] (1) an alkaline peroxide mechanical pulp was dispersed by a deflaker (a pressure at an inlet and an outlet of the deflaker is 2.0 bar-4.0 bar) to prepare a pulp with freeness of 400 ml and a bulk of 3.3 cm*/g; bleached hardwood kraft pulp was dispersed and ground to obtain the pulp with the freeness of 500 ml and the bulk of 1.35 cm®/g; northern bleached softwood kraft 102258 pulp was dispersed and ground to obtain the pulp with the freeness of 500 ml and the bulk of
1.33 cm*/g; 60 wt% of the bleached hardwood kraft pulp, 20 wt% of the northern bleached softwood kraft pulp and 30 wt% of the alkaline peroxide mechanical pulp were mixed;
[0042] (2) a ground calcium carbonate (the content of particles with a particle size less than 2 um is < 65%) and a cationic starch (a degree of substitution is 0.032) was added to the mixed pulp of step (1), wherein the ground calcium carbonate is 10% of the weight of the mixed pulp, the cationic starch is added at an amount of 8 kg per ton of the mixed pulp, and the prepared pulp was fed into a headbox of a gap former machine through a wet end after the prepared pulp is filtered to be purified;
[0043] (3) a wet web was formed in the gap former machine at a wire speed of 1400 m/min and a pulp-to-wire speed ratio of 1.05;
[0044] (4) the wet web was squeezed and the squeezed was dried in a dryer at a pre-drying stage to form an uncoated base paper with a basis weight of 115 g/m? and water content of 52%;
[0045] (5) both sides of the base paper was coating with a liquid starch glue on an applicator roll, each side has a coating amount of 4.0 g/m?; the glue was prepared by an enzyme-digested starch, and has a solid content of 12% and a viscosity of 30 cps;
[0046] (6) base coating was carried out on the base paper prepared by step (5) through film transfer coating to form a base coating, wherein a pressure between a measuring rod and an upper roll that are fored together for the base coating is 1.7 bar, a pressure between a measuring rod and a lower roll that are fored together for the base coating is 1.5 bar, coating quantity was 20 g/m”; a coating material for the base coating comprised the following components in percentage by weight: 100% of ground calcium carbonate with > 65% of its particle having a particle size of less than 2 um, 7% of a styrene-butadiene latex, and 15% of a biological latex, the coating material has a solid content of 62%, a low shearing viscosity was 400 cps;
[0047] (7) double medium coating was carried out on the base coating with a blade after performing step (6) to form two layers of medium coatings, each layer of the medium coating has a coating amount of 11 g/m°-12 g/m?; wherein the blade for medium coating has a pressure 102258 of 55% and a blade angle of 30 degree, the total coating amount on both layers was 22.8 g/m”; a coating material for the medium coating comprised the following components in percentage by weight: 100% of the ground calcium carbonate with > 65% of its particle size less than 2 pum, 7% of a styrene-butadiene latex, and 8% of a biological latex, the coating material has a solid content of 66%, a low shear viscosity of 1000 cps;
[0048] (8) double surface coatings was carried out on the medium coatings after performing step (7) to form two layers of surface coatings, each layer has a coating amount of 11 g/m°-12 g/m”, wherein a blade for surface coating has a pressure of 55%, and a blade angle of 40 degree, the total coating amount on both layers was 23.5 g/m’; a coating material for the surface coating comprised the following components in percentage by weight: 97% of ground calcium carbonate with > 98% of its particle having a particle size of less than 2 um, 5% of porcelain clay with > 90% of its particle having a particle size less than 1 um, 10% of a styrene-butadiene latex, and 3% of a biological latex; the coating material has a solid content of 70%, a low shearing viscosity of 1400 cps;
[0049] 9) the base paper prepared by step (8) was calendared in a calendar, wherein Janus Calender MK2 from Voith GmbH was used, a calendering mode of the calender is an 8-nip, press sections in the calender are a second pressure area, a forth pressure area, a seventh pressure area, and a ninth pressure area, a calendering temperature is 180 °C and a line pressure is 40 kN/m.
[0050] Embodiment 3
[0051] A method for making of a coated two side art paper with high bulk and high gloss, comprising the following steps:
[0052] (1) an alkaline peroxide mechanical pulp was dispersed by a deflaker (a pressure at an inlet and an outlet of the deflaker is 2.0 bar-4.0 bar) to prepare a pulp with freeness of 400 ml and a bulk of 3.3 cm*/g; bleached hardwood kraft pulp was dispersed and ground to obtain the pulp with the freeness of 500 ml and the bulk of 1.35 cm*/g; northern bleached softwood kraft pulp was dispersed and ground to obtain the pulp with the freeness of 500 ml and the bulk of
1.33 cm*/g; 53 wt% of the bleached hardwood kraft pulp, 12 wt% of the northern bleached 102258 softwood kraft pulp and 35 wt% of the alkaline peroxide mechanical pulp were mixed;
[0053] (2) a ground calcium carbonate (the content of particles with a particle size less than 2 um is < 65%) and a cationic starch (a degree of substitution is 0.028-0.032) was added to the mixed pulp of step (1), wherein the ground calcium carbonate is 13% of the weight of the mixed pulp, the cationic starch is added at an amount of 7 kg per ton of the mixed pulp, and the prepared pulp was fed into a headbox of a twin-wire paper machine through a wet end after the prepared pulp is filtered to be purified.
[0054] (3) a wet web was formed in the gap former machine at a wire speed of 1350 m/min and a pulp-to-wire speed ratio of 1.04;
[0055] (4) the wet web was squeezed and the squeezed was dried in a dryer at a pre-drying stage to form an uncoated base paper with a basis weight of 110 g/m? and water content of
4.7%;
[0056] (5) both sides of the base paper was coated with a liquid starch glue on an applicator roll, each side has a coating amount of 2.3 g/m?; the glue was prepared by an enzyme-digested starch, and has a solid content of 10% and a viscosity of 25 cps;
[0057] (6) base coating was carried out on the base paper prepared by step (5) through film transfer coating to form a base coating, wherein a pressure between a measuring rod and an upper roll that are fored together for the base coating is 1.61 bar, a pressure between a measuring rod and a lower roll that are fored together for the base coating is 1.63 bar, coating quantity was 18 g/m”; a coating material for the base coating comprised the following components in percentage by weight: 100% of ground calcium carbonate with > 65% of its particle having a particle size of less than 2 um, 4% of a styrene-butadiene latex, and 12% of a biological latex, the coating material has a solid content of 66%, a low shearing viscosity was 500 cps;
[0058] (7) double medium coating was carried out on the base coating with a blade after performing step (6) to form two layers of medium coatings, each layer of the medium coating has a coating amount of 10 g/m”-11 g/m?; wherein the blade for medium coating has a pressure of 40% and a blade angle of 40 degree, the total coating amount on both layers was 21.5 om 192298 a coating material for the medium coating comprised the following components in percentage by weight: 100% of the ground calcium carbonate with > 65% of its particle size less than 2 pum, 5% of a styrene-butadiene latex, and 7% of a biological latex, the coating material has a solid content of 63%, a low shear viscosity of 900 cps;
[0059] (8) double surface coatings was carried out on the medium coatings after performing step (7) to form two layers of surface coatings, each layer has a coating amount of 10 g/m°-11 g/m”, wherein a blade for surface coating has a pressure of 40%, and a blade angle of 40 degree, the total coating amount on both layers was 20.3 g/m”; a coating material for the surface coating comprised the following components in percentage by weight: 97% of ground calcium carbonate with > 98% of its particle having a particle size of less than 2 um, 3% of porcelain clay with > 90% of its particle having a particle size less than 1 um, 8% of a styrene-butadiene latex, and 2% of a biological latex; the coating material has a solid content of 69%, a low shearing viscosity of 1300 cps;
[0060] (9) the base paper prepared by step (8) was calendared in a calendar, wherein Janus Calender MK2 from Voith GmbH was used, a calendering mode of the calender is an 8-nip, press sections in the calender are a second pressure area, a forth pressure area, a seventh pressure area, and a ninth pressure area, a calendering temperature is 180 °C and a line pressure is 50 kN/m.
[0061] Embodiment 4
[0062] The main differences between with embodiment 3 and embodiment 4 were the following:
[0063] in the medium coating, a pressure of a blade was 42% and a blade angle was 40 degree at the first coating, the pressure of the blade was 45% and the blade angle was 40 degree at the second coating.
[0064] in the surface coating, the pressure of the blade was 38% and the blade angle was 35 degree at the first coating, the pressure of the blade was 40% and the blade angle of the blade was 35 degree at the second coating.
[0065] Embodiment 5
[0066] The main differences between embodiment 5 and embodiment 4 were the following:
[0067] a calendering temperature at the second pressure area and the forth pressure area was 150°C, the line pressure was 50 kN/m; the calendering temperature at the seventh pressure area and the ninth pressure area was 180°C, the line pressure was 40kN/m.
[0068] Comparative example 1
[0069] A method of making of a coated two side art paper with high bulk and high gloss, comprising the following steps:
[0070] (1) an alkaline peroxide mechanical pulp was dispersed by a deflaker (a pressure at an inlet and an outlet of the deflaker is 2.0 bar-4.0 bar) to prepare a pulp with freeness of 400 ml and a bulk of 3.3 cm*/g; bleached hardwood kraft pulp was dispersed and ground to obtain the pulp with the freeness of 400 ml and the bulk of 1.35 cm*/g; northern bleached softwood kraft pulp was dispersed and ground to obtain the pulp with the freeness of 500 ml and the bulk of
1.33 cm*/g; 530 wt% of the bleached hardwood kraft pulp, 12 wt% of the northern bleached softwood kraft pulp and 35 wt% of the alkaline peroxide mechanical pulp were mixed;
[0071] (2) after the pulp was mixed in accordance with the weight ratio in step (1), a ground calcium carbonate (the content of particles with a particle size less than 2 um is < 65%) and a cationic starch (a degree of substitution is 0.028-0.032) was added to the mixed pulp of step (1), wherein the ground calcium carbonate is 13% of the weight of the mixed pulp, the cationic starch is added at an amount of 7 kg per ton of the mixed pulp, and the prepared pulp was fed into a headbox of a gap former machine through a wet end after the prepared pulp is filtered to be purified;
[0072] (3) a wet web was formed in the gap former machine at a wire speed of 1350 m/min and a pulp-to-wire speed ratio of 1.04;
[0073] (4) the wet web was squeezed and the squeezed was dried in a dryer at a pre-drying stage to form an uncoated base paper with a basis weight of 110 g/m? and water content of
4.7%;
[0074] (5) both sides of the base paper was coated with a liquid starch glue on an applicator roll, each side has a coating amount of 2.3 g/m?; the glue was prepared by an enzyme-digested starch, and has a solid content of 10% and a viscosity of 25 cps;
[0075] (6) base coating was carried out on the base paper prepared by step (5) through film transfer coating to form a base coating,wherein a pressure between a measuring rod and an upper roll that are fored together for the base coating is 1.61 bar, a pressure between a measuring rod and a lower roll that are fored together for the base coating is 1.63 bar, coating quantity was 15.6 g/m? a coating material for the base coating comprised the following components in percentage by weight: 100% of ground calcium carbonate with > 65% of its particle having a particle size of less than 2 um, 3.5% of a styrene-butadiene latex, and 12% of a biological latex, the coating material has a solid content of 66%, a low shearing viscosity was 500 cps;
[0076] (7) double medium coating was carried out on the base coating with a blade after performing step (6) to form two layers of medium coatings, each layer of the medium coating has a coating amount of 10 g/m°-12 g/m?; wherein the blade for medium coating has a pressure of 40% and a blade angle of 30 degree, the total coating amount on both layers was 22.6 g/m”; a coating material for the medium coating comprised the following components in percentage by weight: 100% of the ground calcium carbonate with > 65% of its particle size less than 2 pum, 3% of a styrene-butadiene latex, and 7% of a biological latex, the coating material has a solid content of 64%, a low shear viscosity of 900 cps;
[0077] (8) double surface coatings was carried out on the medium coatings after performing step (7) to form two layers of surface coatings, each layer has a coating amount of 9 g/m°-12 g/m”, wherein a blade for surface coating has a pressure of 40%, and a blade angle of 40 degree, the total coating amount on both layers was 21.5 g/m”; a coating material for the surface coating comprised the following components in percentage by weight: 97% of ground calcium carbonate with > 98% of its particle having a particle size of less than 2 um, 7% of porcelain clay with > 90% of its particle having a particle size less than 1 um, 8% of a styrene-butadiene latex, and 2% of a biological latex; the coating material has a solid content of 69%, a low
. . . LU102253 shearing viscosity of 1300 cps;
[0078] (9) the base paper prepared by step (8) was calendared in a calendar, wherein Janus Calender MK2 from Voith GmbH was used, a calendering mode of the calender is an 8-nip, press sections in the calender are a second pressure area, a forth pressure area, a seventh pressure area, and a ninth pressure area, a calendering temperature is 180 °C and a line pressure is 50 kN/m.
[0079] Comparative example 2
[0080] The main differences between comparative example 2 and embodiment 3 were the following:
[0081] Bleached hardwood kraft pulp, northern bleached softwood kraft pulp, alkaline peroxide mechanical pulp, bleached-chemi-thermo-mechanical-pulp were selected and then mixed in a mixing tuber. The bleached hardwood kraft pulp after pulping has a freeness of 410 ml and bulk of 1.3 cm*/g; the northern bleached softwood kraft pulp after pulping has the freeness of 400ml and the bulk of 1.3 cm?/g; both the alkaline peroxide mechanical pulp and the bleached-chemi-thermo-mechanical-pulp after pulping have the freeness of 360 ml and the bulk of 2.8 cm’/g.
[0082] The performances of the coated two side art paper obtained in the embodiments and comparative examples were tested, and the results are shown in Table 1.
[0083] Table 1. Bending Gloss stiffness Smoothness (s) (%) (mNm) Bulk MD
TWS CD (cm¥/g) BWS (Mac- (Top (Cross (Bottm | TWS | BWS | hine wire directi wire directi side) -on) side) -on)
Embodime
1.01 63.9 63.7 623 623 3.40 2.40 nt 1 Embodime
1.02 61.7 60.3 638 631 3.50 2.75 nt 2 Embodime
1.02 68.4 67.9 656 653 3.72 3.00 nt 3 Embodime
1.04 68.4 68.1 730 712 3.88 3.24 nt 4 Embodime
1.05 70.1 70.6 788 782 3.91 3.43 nt 5 Comparati ve example 0.94 61.5 61.5 559 551 2.76 1.90 1 Comparati ve example 0.86 68.5 69.1 510 502 2.50 1.60 2
[0084] It can be seen from Table 1 the coated art paper made according to the technical solution of the present invention has a bulk of more than 1.00cm*/g, a gloss of 60%-70%, a smoothness of more than 600 s, and a bending stiffness of more than 2.4 mNm. The bulk of the coated art paper made in comparative examples 1-2 is less than 1.00 cm®/g; the gloss, the smoothness and the bending stiffness of the coated art paper made in comparative examples 1-2 are poorer than those of the embodiments;
[0085] The aforementioned contents are descriptions further illustrating the present invention in detail by conjugating with specific embodiments, which cannot be considered that specific implementations of the present invention are limited to these descriptions.
For those of ordinary 02253 skill in the art to which the present invention belongs, several simple technical solutions of the present invention can be modified or equivalently replaced without departing from the conception of the present invention.
Claims (9)
1. A method for making a coated two side art paper with high bulk and high gloss, characterized in that it comprises steps of: (1) dispersing an alkaline peroxide mechanical pulp by a deflaker to obtain a pulp with a freeness of 300 ml - 400 ml and a bulk of > 3.0 cm*/g; mixing 50-60 wt% of bleached hardwood kraft pulp, 10-20 wt% of northern bleached softwood kraft pulp, and 30%-40 wt% of the dispersed alkaline peroxide mechanical pulp to obtain a mixed pulp; (2) adding ground calcium carbonate and a cationic starch to the mixed pulp of step (1), wherein the ground calcium carbonate 1s 10%-14% of the weight of the mixed pulp, and the cationic starch is added at an amount of 6 kg-8 kg per ton of the mixed pulp; feeding the prepared pulp into a headbox of a gap former machine through a wet end after the prepared pulp is filtered to be purified; (3) forming a wet web in the gap former machine at a wire speed of 1300 m/min-1400 m/min and a pulp-to-wire speed ratio of 1.04-1.05; (4) squeezing the wet web and drying the squeezed wet web in a dryer at a pre-drying stage to form an uncoated base paper with a basis weight of 110 g/m°-115 g/m? and a water content of 4%-6%; (5) coating both sides of the uncoated base paper with a liquid starch glue on an applicator roll, each side has a coating amount of 1 g/m°-4 g/m”; (6) carrying out base coating on the base paper prepared by step (5) through film transfer coating to from a base coating, wherein a pressure between a measuring rod and an upper roll that are fored together for the base coating is 1.5 bar - 1.7 bar, a pressure between a measuring rod and a lower roll that are fored together for the base coating is 1.5 bar - 1.7 bar, coating quantity is 18 g/m°-20 g/m”; a coating material for the base coating comprises the following components in percentage by weight: 100% of ground calcium carbonate with >65% of its particle having a particle size of less than 2 um, 4%-7% of a styrene-butadiene latex, and 10%-15% of a biological latex, the coating material has a solid content of 62%-66%, a low shear viscosity of 400 cps-600 cps; (7) carrying out double medium coatings on the base coating with a blade after performing step (6) to form two layers of medium coatings, each layer of the medium coating has a coating amount of 10 g/m°-12 g/m°; wherein the blade for medium coating has a pressure of 40%-55%% 02253 and a blade angle of 30 degrees -40 degrees; a coating material for medium coating comprises the following components in percentage by weight: 100% of ground calcium carbonate with >65% of its particle having a particle size of less than 2 um, 4%-7% of a styrene-butadiene latex, and 5%-8% of a biological latex, the coating material has a solid content of 62%-66%, a low shear viscosity of 800 cps-1000 cps; (8) carrying out double surface coatings on the medium coatings after performing step (7) to form two layers of surface coatings, each layer of the surface coating has a coating amount of 9 g/m°-12 g/m?; wherein a blade for surface coating has a pressure of 40%-55% and a blade angle of 30 degrees - 40 degrees; a coating material for surface coating comprises the following components in percentage by weight: 90%-97% of ground calcium carbonate with >98% of its particle having a particle size of less than 2 um, 3%-5% of porcelain clay with >90% of its particle having a particle size of 1 um, 7%-10% of a styrene-butadiene latex, and 1%-3% of a biological latex; the coating material has a solid content of 68%-70%, a low shear viscosity of 1200 cps-1400 cps; (9) calendaring the base paper prepared by step (8) in a calendar, wherein a calendering mode of the calender is an 8-nip, press sections in the calender are a second pressure area, a forth pressure area, a seventh pressure area, and a ninth pressure area, a calendering temperature is 150 °C-180°C and a line pressure is 40 kN/m-50 kN/m.
2. The method according to claim 1, characterized in that in step (1), dispersing and grinding the bleached hardwood kraft pulp and the northern bleached softwood kraft pulp separately before the mixing to prepare the bleached hardwood kraft pulp and the northern bleached softwood kraft pulp with a freeness of 400 ml - 500 ml and a bulk of 1.25 cm’/g - 1.35 cm’/g .
3. The method according to claim 1, characterized in that before the mixing, dispersing the alkaline peroxide mechanical pulp while skipping grinding the alkaline peroxide mechanical pulp; an inlet and an outlet of the deflaker respectively have a pressure 2.0 bar - 4.0 bar.
4. The method according to claim 1, characterized in that in step (2), the ground calcium carbonate has <65% of its particles with a particle size of less than 2 um, the cationic starch has a degree of substitution of 0.028-0.032.
5. The method according to claim 1, characterized in that in step (5), the glue is prepared by an enzyme-digested starch, and has a solid content of 10% and a viscosity of 25 cps. HU102259
6. The method according to claim 1, characterized in that in medium coating, a blade for a first coating step of medium coating has a pressure of 42% and a blade angle of 40 degrees; a blade for a second coating step of medium coating has a pressure of 45% and a blade angle of 40 degrees.
7. The method according to claim 1, characterized in that in surface coating, a blade for a first coating step of surface coating has a pressure of 38% and a blade angle of 35 degrees; a blade for a second coating step of surface coating has a pressure of 40% and a blade angle of 35 degrees.
8. The method according to claim 1, characterized in that in step (9), the calendering temperature at the second nip and the forth nip is 150°C, the calendering temperature at the seventh nip and the ninth nip is 180°C, and the line pressure is 40 kN/m - 50 kN/m.
9. A coated two side art paper with high bulk and high gloss, characterized in that it is produced by the method according to any one of claims 1 to 8.
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| CN110777553B (en) * | 2019-10-30 | 2022-03-15 | 海南金海浆纸业有限公司 | Papermaking method of high-bulk high-gloss double-sided coated paper |
| CN112663374B (en) * | 2020-12-17 | 2023-05-12 | 江苏理文造纸有限公司 | Treatment process of wood chip fibers |
| CN113338067B (en) * | 2021-07-01 | 2023-02-28 | 山东太阳纸业股份有限公司 | Environment-friendly color series household paper and preparation method thereof |
| CN114438812B (en) * | 2021-12-31 | 2024-07-30 | 海南金海浆纸业有限公司 | Multipurpose coated paper and production process thereof |
| CN114457621B (en) * | 2022-01-17 | 2023-03-14 | 海南金海浆纸业有限公司 | High-speed multilayer coating digital paper making method |
| CN114687238B (en) * | 2022-03-09 | 2023-07-21 | 海南金海浆纸业有限公司 | Preparation method of high-bulk coated paper based on three-layer headbox single-layer net paper making |
| CN114622445B (en) * | 2022-03-29 | 2023-03-24 | 江苏博汇纸业有限公司 | Preparation process of high-bulk white cardboard |
| CN114790666B (en) * | 2022-04-15 | 2023-07-14 | 山东仁丰特种材料股份有限公司 | High-stiffness straw base paper and preparation method thereof |
| CN114960272B (en) * | 2022-04-26 | 2023-09-01 | 江苏膜可光学材料有限公司 | Highlight porcelain imitation paperboard with special glaze effect and process flow thereof |
| CN114855508A (en) * | 2022-05-19 | 2022-08-05 | 海南金海浆纸业有限公司 | Ultrahigh-bulk single-sided coated paper and production process thereof |
| CN115125756A (en) * | 2022-08-01 | 2022-09-30 | 贵州赤天化纸业股份有限公司 | Ultralow-quantitative household paper and preparation method thereof |
| CN116005487B (en) * | 2023-03-07 | 2024-03-26 | 山东仁丰特种材料股份有限公司 | Process for producing paper rod base paper by long-net large-cylinder paper machine |
| CN118880661A (en) * | 2024-07-11 | 2024-11-01 | 玖龙纸业（东莞）有限公司 | Method for preparing base paper for printing high-quality double-sided coated dinner plates |
| CN119686151A (en) * | 2025-02-25 | 2025-03-25 | 山东显华新材料科技有限公司 | Preparation method of high-temperature high-humidity lower hole high-stability electronic carrier tape base paper |
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| JP2943571B2 (en) * | 1993-07-26 | 1999-08-30 | 王子製紙株式会社 | Production method of double-side coated paper |
| JP4352939B2 (en) * | 2004-03-04 | 2009-10-28 | 王子製紙株式会社 | Bulky gloss coated paper |
| US20080308239A1 (en) * | 2007-06-12 | 2008-12-18 | Hart Peter W | Fiber blend having high yield and enhanced pulp performance and method for making same |
| CN102277787A (en) * | 2010-06-09 | 2011-12-14 | 中国制浆造纸研究院 | Manufacturing method of bulky art paper |
| CN102852040B (en) * | 2012-08-31 | 2015-04-08 | 金华盛纸业（苏州工业园区）有限公司 | Preparation method for dyeing raw paper |
| CN104420382B (en) * | 2013-08-28 | 2016-08-17 | 天津科技大学 | Containing anionic trash control method in high yield pulp mixed slurry |
| CN105155333B (en) * | 2015-09-15 | 2017-06-20 | 岳阳林纸股份有限公司 | A kind of manufacture method of high-grade ivory white offset printing paper |
| CN106087523B (en) * | 2016-08-03 | 2018-02-23 | 海南金海浆纸业有限公司 | A kind of papermaking process of on-line coater water-transfer printing paper base stock body paper |
| CN107012738A (en) * | 2017-05-23 | 2017-08-04 | 岳阳林纸股份有限公司 | A kind of manufacture method of high bulk art paper |
| CN107460787A (en) * | 2017-08-31 | 2017-12-12 | 山东仁丰特种材料股份有限公司 | Opaque environmentally friendly nonwoven wallpaper |
| CN107761457A (en) * | 2017-10-26 | 2018-03-06 | 海南金海浆纸业有限公司 | A kind of environmental protection coating material for high speed |
| CN107829331A (en) * | 2017-11-01 | 2018-03-23 | 海南金海浆纸业有限公司 | A kind of high smoothness two-sided art paper and preparation method thereof |
| CN108867146A (en) * | 2018-07-27 | 2018-11-23 | 海南金海浆纸业有限公司 | A kind of preparation method of matt art paper |
| CN110318287A (en) * | 2019-07-02 | 2019-10-11 | 陕西科技大学 | A kind of preparation method of sound-absorbing and flame-retardant fiber type composite material |
| CN110777553B (en) * | 2019-10-30 | 2022-03-15 | 海南金海浆纸业有限公司 | Papermaking method of high-bulk high-gloss double-sided coated paper |
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