Method of manufacturing ink-jet printing paper with glossy coating and ink-jet printing paper with glossy coating

FIELD: pulp-and-paper industry.

SUBSTANCE: coating composition consisting of ink-compatible pigment, binder, and cationic fixative is deposited onto one of the sides of based paper and the other side is covered with detwisting coating, after which coating is ennobled by means of supercalendering. As pigment, mixture of amorphous silicon dioxide with calcium carbonate or kaolin with outer specific surface 60-85 m2/g at ratio (25-50):(75-50). Binder is a mixture of polyvinyl alcohol with latex selected from class of styreneacrylic copolymers at ratio (20-25%):(7-18%) based on the weight of pigment. Cationic fixative is poly(diallyldimethylammonium chloride), which is directly incorporated into coating composition in amount 5-10%.

EFFECT: enabled image quality and paper surface strength control.

3 cl, 1 tbl, 13 ex

 

The invention relates to the pulp and paper industry, in particular the production of paper for inkjet printing on coated pigment coating.

It is known that the inkjet paper is subject to strict requirements, as printing is mainly water-based paints, and paper should provide a quick drying paint and at the same time, high resolution and optical density of the image, which is difficult to achieve simultaneously.

A significant amount of paper intended for inkjet printing, is covered with a special coating of different composition to achieve certain characteristics of inkjet printers, many of which depend on the type and processing of paper.

Obtaining full-color images by the method of inkjet printing with full shading leaf area requires coverage of the following properties - the ability of a solid fixation of the dye ink on the surface of the material and rapid absorption of the liquid phase of the ink in the coating material without deformation. Such requirements due to the fact that inkjet ink is used or based on aqueous solutions of dyes, or on the basis of the dispersions of the dyes in a suitable liquid.

The lack of fixation of the dye ink on the surface coating of the children to reduce the optical density of the image, and insufficient absorption of the liquid phase of the ink material of the coating leads to such defects as mixing colors, ocenie when printing lines and small details that makes the image blurry and fuzzy.

Coatings that meet the specified requirements, receive through the application, the main component of which is an artificially-modified silicon dioxide. The use of the modified silicon dioxide has a number of drawbacks is the low strength of the coating and the inability to use traditional printing methods, so constantly attempt to resolve these drawbacks by modifying the composition of the coating.

A known method of manufacturing paper for inkjet printing with pigment coating, comprising applying to the paper-based coatings containing pigment - colloidal or amorphous silicon dioxide, calcium carbonate, aluminum silicate and a latex binder, not fully coalescers in the drying process. Like the composition and the drying mode allow you to get the paper that gives good print quality, fast drying paints and solid surface (WO 9426531, CL VM 5/00, publ. 1994).

A known method of manufacturing paper for inkjet printing with pigmented coating, comprising applying to the substrate the coating to the notizie, consisting of polyvinylpyrrolidone, copolymers of pyrrolidone and vinyl acetate, and the pigment is kaolin, calcium carbonate, zinc oxide, barium sulfate, silicates (US 4371582, CL D21H 19/00, publ. 1983). The resulting paper has good printing properties.

The closest analogue on the technological nature of the claimed technical solution is a method of manufacturing paper for inkjet printing with pigment coating, comprising applying to the paper-based coating, ink receptive containing amorphous silicon dioxide and calcium carbonate, polyacrylate latex as a binder, and applying a layer of fixing the dye consisting of cationic polyaminoamidazolines copolymer (WO 9701447, CL VM 5/00, publ. 1997)).

The paper obtained in a known manner, has a high print quality and resistance of the image.

However, only in the form of latex as the binder and the ratio of pigment/latex, you cannot get a full range of print and strength properties of the coating.

New technical result from the use of the proposed technical solution is the ability to control image quality in inkjet printing and strength of the paper surface, which is important when using paper in a modern wide-format inkjet printing machines, and when using the comb is ordinated printing methods.

New technical result from the use of the proposed technical solution is to improve the printing characteristics and high strength surface because:

- optimization of the ratio between amorphous silica and other pigment;

- the selection of the optimum characteristics of pigments;

- improve the appearance and proportion of binder used;

- optimization of the number of input cationic release of dye.

A new technical result is achieved by the fact that in the manufacture of paper for inkjet printing with pigment coating method, including the production of base paper, coating one side of a coating composition consisting of a pigment, ink receptive, binder and cationic fixative, and on the other side - protivoukachiwauschee coating, followed by a finishing coating by supercalendering, as a pigment, a mixture of amorphous silicon dioxide with calcium carbonate or kaolin with specific external surface 60-85 m2/g ratio (25-50):(75-50), while the binder is a mixture of polyvinyl alcohol with latex from the class of styrene-acrylic copolymers in the ratio (20-25%):(7-18%) by weight of the pigment and the cationic fixative is injected directly into the coating composition in the amount of 5-10%by weight of pigment and is polydiallyldimethyl.

As a pigment to provide porosity of the coating, a mixture of amorphous silicon dioxide with calcium carbonate or kaolin with specific external surface 60-85 m2/g ratio (25-50):(75-50).

For fixing a dye in the coating composition introduced cationic fixative belonging to the class of polydiallyldimethyl in the amount of 5-10% by weight of pigment.

The introduction of the coating composition, of a binder consisting of a mixture of polyvinyl alcohol and latex improves the fixing of the pigment on the surface of the paper.

The coating composition is applied to the base paper in a single pass. The total mass of the coating 7-18 g/m2.

The finishing coating, ink receptive, carried out by the final finishing of paper at supercalender when the pressure in the gap of the calender rolls 20-75 bar. The specified pressure range is optimal, increasing the pressure in the calendering leads to deterioration of the printing paper properties due to the reduced porosity of the coating.

Another object of the present invention relates to inkjet paper with pigmented coating made of the proposed method, and characterized by high surface hardness.

The proposed method of manufacturing the inkjet papers presents the following example and (1-13).

Example 1

A method of manufacturing paper for inkjet printing is as follows.

1. Base paper weight 65-150 g/m2get wet on the paper machine, using the following composition in wt.%:

bleached sulphate hardwood pulp45-63
bleached coniferous sulphate pulp37-45
calcium carbonate10 (valoche.)
glue AAA0.3 to 0.5 (from valoche.)
cationic starch0,6-1,0 (valoche.)
politicalintelligence resin1.0 to 1.5 (from valoche.)
optical bleachof 0.1 to 0.13 (from valoche.)
dye10-12 g/t of pulp

2. Preparation of composition for coating, ink receptive, with a concentration of 17-25%, of the following composition (wt.% on the dry substance by weight of pigment):

Pigment100
Binder29
Dye0,014
Cationic fixative5
Optical bleach4-
A crosslinking agent based
polyhydroxyether resins2-5 (wt.% dry-Wu
by weight of pigment).

The mixture is applied by air scraper at one time, the coating weight 12-17 g/m2.

As a pigment, a mixture of amorphous silica from kaolin having a size of the specific surface of particles 80 m2/g in the ratio 25:75;

cationic fixative is injected directly into the coating composition, ink receptive, in the amount of 5% by weight of pigment;

- is used as a binder of polyvinyl alcohol in the amount of 22% by weight of pigment and cationic stirolakrilonit latex in the amount of 8% by weight of pigment.

The drying is carried out using infrared emitters and by blowing hot air (temperature of 90-130°).

3. Application anticrease coating having the following composition (wt.% on the dry substance by weight of pigment):

Pigment100
Latex strollerderby12
Polyvinyl alcohol : 2,5
Caustic soda0,14
Sodium pyrophosphate 0,45

Protivoukachiwauschee coating is applied to a coating machine equipped causing nodes with an air scraper. The weight of the finished coating 12-17 g/m2. The drying is performed by blowing hot air (temperature of 90-130°).

After the application of all coatings spend the finishing coating, ink receptive. The elevation is to finish the paper on supercalender when the pressure in the nip rolls 20-75 bar.

Samples of inkjet papers were sealed for printers HP PHOTOSMART 8153 and Epson StylusPhoto 935. All samples showed a good image quality and high resistance to mechanical damage.

Example 2

A method of manufacturing paper for inkjet printing carried out analogously to example 1 with the only difference that:

cationic fixative is injected directly into the coating composition perceiving the ink in an amount of 10% by weight of pigment.

Samples of inkjet papers were sealed for printers HP PHOTOSMART 8153 and Epson StylusPhoto 935.

Example 3

A method of manufacturing paper for inkjet printing carried out analogously to example 2 with the only difference that, as a pigment, a mixture of amorphous silica from kaolin having a size of the specific surface of particles 80 m2/g ratio of 35:5.

Samples of inkjet papers were sealed for printers HP PHOTOSMART 8153 and Epson StylusPhoto 935.

Example 4

A method of manufacturing paper for inkjet printing carried out analogously to example 1 with the only difference that, as a pigment, a mixture of amorphous silica from kaolin having a size of the specific surface of particles 80 m2/g ratio of 35:65.

Samples of inkjet papers were sealed for printers HP PHOTOSMART 8153 and Epson StylusPhoto 935.

Example 5

A method of manufacturing paper for inkjet printing carried out analogously to example 4 with the only difference that is used as a binder of polyvinyl alcohol in the amount of 15% by weight of pigment and cationic stirolakrilonit latex in the amount of 13% by weight of pigment.

Samples of inkjet papers were sealed for printers HP PHOTOSMART 8153 and Epson StylusPhoto 935.

Example 6

A method of manufacturing paper for inkjet printing carried out analogously to example 5 with the only difference that is used as a binder of polyvinyl alcohol in the amount of 15% by weight of pigment and cationic stirolakrilonit latex in the amount of 17% by weight of pigment.

Samples of inkjet papers were sealed for printers HP PHOTOSMART 8153 and Epson StylusPhoto 935.

Example 7

A method of manufacturing paper alastruey printing is carried out analogously to example 1 with the only difference being as a pigment, a mixture of amorphous silica from kaolin having a size of the specific surface of particles 80 m2/g in the ratio of 50:50.

Samples of inkjet papers were sealed for printers HP PHOTOSMART 8153 and Epson StylusPhoto 935.

Example 8

A method of manufacturing paper for inkjet printing carried out analogously to example 1 with the only difference that:

as the pigment, a mixture of amorphous silica from kaolin having a size of the specific surface of particles 80 m2/g in the ratio 50:50;

cationic fixative is injected directly into the coating composition, ink receptive, in the amount of 9% by weight of pigment.

Samples of inkjet papers were sealed for printers HP PHOTOSMART 8153 and Epson StylusPhoto 935.

Example 9

A method of manufacturing paper for inkjet printing carried out analogously to example 1 with the only difference that:

as the pigment, a mixture of amorphous silica from kaolin having a size of the specific surface of particles 80 m2/g in the ratio 50:50;

- is used as a binder of polyvinyl alcohol in the amount of 15% by weight of pigment and cationic stirolakrilonit latex in the amount of 17% by weight of pigment.

Samples of inkjet papers were sealed for printers H PHOTOSMART 8153 and Epson StylusPhoto 935.

Example 10

A method of manufacturing paper for inkjet printing carried out analogously to example 1 with the only difference that:

as the pigment, a mixture of amorphous silicon dioxide with calcium carbonate having a size of the specific surface of particles 80 m2/g in the ratio 50:50;

cationic fixative is injected directly into the coating composition, ink receptive, in the amount of 5% by weight of pigment.

Samples of inkjet papers were sealed for printers HP PHOTOSMART 8153 and Epson StylusPhoto 935.

Example 11

A method of manufacturing paper for inkjet printing carried out analogously to example 1 with the only difference that:

as the pigment, a mixture of amorphous silicon dioxide with calcium carbonate having a size of the specific surface of particles 80 m2/g in the ratio 50:50;

cationic fixative is injected directly into the coating composition, ink receptive, in the amount of 9% by weight of pigment.

Samples of inkjet papers were sealed for printers HP PHOTOSMART 8153 and Epson StylusPhoto 935.

Example 12

A method of manufacturing paper for inkjet printing carried out analogously to example 1 with the only difference that:

as the pigment, a mixture of amorphous silicon dioxide with calcium carbonate having a size of specific surface is STI particles 80 m 2/g ratio of 35:65;

cationic fixative is injected directly into the coating composition, ink receptive, in the amount of 5% by weight of pigment.

Samples of inkjet papers were sealed for printers HP PHOTOSMART 8153 and Epson StylusPhoto 935.

Example 13

A method of manufacturing paper for inkjet printing carried out analogously to example 1 with the only difference that:

as the pigment, a mixture of amorphous silicon dioxide with calcium carbonate having a size of the specific surface of particles 80 m2/g ratio of 35:65;

cationic fixative is injected directly into the coating composition, ink receptive, in the amount of 5% by weight of pigment;

- is used as a binder of polyvinyl alcohol in the amount of 17% by weight of pigment and cationic stirolakrilonit latex in the amount of 15% by weight of pigment.

Samples of inkjet papers were sealed for printers HP PHOTOSMART 8153 and Epson StylusPhoto 935.

Paper for inkjet printers, obtained in examples 1-13, characterized by a high optical density of the resulting image, lack of mixing and flowing ink and high durability of the surface.

The optical density at blue
The optical density blackThe optical density yellowThe strength of the surface, m/s
a 1.75-2,1of 1.65 to 1.91,77-1,802,4->2,5

1. A method of manufacturing paper for inkjet printing with pigment coating, including the production of base paper, coating one side of a coating composition consisting of a pigment, ink receptive, binder and cationic fixative, and on the other side - protivoukachiwauschee coating, followed by a finishing coating by supercalendering, characterized in that as a pigment, a mixture of amorphous silicon dioxide with calcium carbonate or kaolin with specific external surface 60-85 m2/g ratio (25-50):(75-50), while the binder is a mixture of polyvinyl alcohol with latex from the class of styrene-acrylic copolymers in the ratio (20-25%):(7-18%) by weight of the pigment and the cationic fixative is injected directly into the coating composition in the amount of 5-10% by weight of pigment.

2. The method according to claim 1, characterized in that the cationic fixative use polydiallyldimethyl.

3. Paper for inkjet printing with pigment coating, characterized in that manufactured by the method according to claim 1.



 

Same patents:

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FIELD: polymer materials in paper-and-pulp industry.

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12 cl, 5 dwg, 4 tbl, 3 ex

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10 cl, 3 dwg

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7 cl, 2 dwg, 2 tbl, 13 ex

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40 cl, 8 dwg

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42 cl, 7 dwg

FIELD: pulp-and-paper industry.

SUBSTANCE: coating composition consisting of ink-compatible pigment, water-soluble binder, and cationic fixative is deposited onto one of the sides of based paper and the other side is covered with detwisting coating, after which glossy surface is formed. Coating composition is supplemented by wettability controlling agent based on polydimethylsiloxane resins in amounts 0.4 to 1.6% of the weight of pigment. Water-soluble binder is a mixture of polyvinyl alcohol with polyvinylpyrrolidone at ratio (90-50):(10-50) in amount 40-60% and styreneacrylic latex in amount 15-20% of the weight of pigment. When forming glossy surface, polyethylene oxide-based plasticizer is used in amount 7-15% of the weight of pigment followed by supercalendering at pressure in roll contact zone 20-25°C and temperature 50-90°C.

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5 cl, 1 tbl, 54 ex

FIELD: paper coated with composition for coating various kinds of paper, for offset printing of paper used for manufacture of books, magazines, annual reports, or packaging paper.

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7 cl, 2 dwg, 2 tbl, 13 ex

FIELD: paper-and-pulp industry.

SUBSTANCE: when ground paper is manufactured, it is coated with ink-accepting coating. The latter contains latex binder, water-soluble binder, pigment mixture of amorphous silica with colloidal cationic silica and colloidal alumina, and ink-fixing agent. Coating operation is performed in two steps, weight ratio of coating applied in the first step to that in the second step ranging from 0.34:1 to 0.66:1. Reverse face of base paper is coated by detwisting coating. Further, coating is ennobled via superglazing at pressure in supercalender roll gap 30-75 bar.

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4 cl, 7 ex

FIELD: pulp-and-paper industry.

SUBSTANCE: coating composition consisting of ink-compatible pigment, water-soluble binder, and cationic fixative is deposited onto one of the sides of based paper and the other side is covered with detwisting coating, after which glossy surface is formed. Coating composition is supplemented by wettability controlling agent based on polydimethylsiloxane resins in amounts 0.4 to 1.6% of the weight of pigment. Water-soluble binder is a mixture of polyvinyl alcohol with polyvinylpyrrolidone at ratio (90-50):(10-50) in amount 40-60% and styreneacrylic latex in amount 15-20% of the weight of pigment. When forming glossy surface, polyethylene oxide-based plasticizer is used in amount 7-15% of the weight of pigment followed by supercalendering at pressure in roll contact zone 20-25°C and temperature 50-90°C.

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5 cl, 1 tbl, 54 ex

FIELD: pulp and paper industry; methods of production of the pigment for manufacture of the cardboard and paper.

SUBSTANCE: the invention is pertaining to the method of production of the pigment for manufacture of the cardboard and paper and may be used in pulp and paper industry at production of the filled paper, the coated paper and the cardboard. Calcium carbonate is treated with aluminum sulfate in the aqueous medium. The treatment is conducted at aluminum sulfate consumption of 25-105 % to the mass of absolutely dry calcium carbonate at the temperature of 80-85°С during 90-180 minutes with production of the suspension containing 25-35 % dry substances in it. The suspension may be additionally dried and to produce the powder. The technical result of the invention is improvement of the pigment quality and expansion of the field of its application.

EFFECT: the invention ensures improvement of the pigment quality and expansion of the field of its application.

2 cl, 2 tbl

FIELD: pulp and paper industry; methods of production of the pigment for manufacture of the cardboard and paper.

SUBSTANCE: the invention is pertaining to the method of production of the pigment for manufacture of the cardboard and paper and may be used in pulp and paper industry at production of the filled paper, the coated paper and the cardboard. Calcium carbonate is treated with aluminum sulfate in the aqueous medium. The treatment is conducted at aluminum sulfate consumption of 25-105 % to the mass of absolutely dry calcium carbonate at the temperature of 80-85°С during 90-180 minutes with production of the suspension containing 25-35 % dry substances in it. At that they use the aqueous medium containing the binding chosen from the group, which includes starch and polyvinyl alcohol in the amount of 0.5-3.0 mass % from the mass of the absolutely dry pigment, and-or the water soluble colorant in the amount of 0.1-0.5 mass % from the mass of the absolutely dry pigment. The suspension is additionally dried and grinded. The technical result of the invention is the improved quality of the pigment as well as expansion of its field of application.

EFFECT: the invention ensures the improved quality of the pigment as well as expansion of its field of application.

2 tbl

FIELD: pulp and paper industry; methods of production of the pigment for manufacture of the cardboard and paper.

SUBSTANCE: the invention is pertaining to the method of production of the pigment for manufacture of the cardboard and paper and may be used in pulp and paper industry at production of the filled paper, the coated paper and the cardboard. Calcium hydroxide suspension is treated with aluminum sulfate solution in the aqueous medium at stirring. The treatment is conducted in the aqueous medium containing the binding in the dissolved state. The binding is chosen from the group, which includes starch and polyvinyl alcohol in the amount of 0.5-5.0 mass % from the mass of the absolutely dry pigment, and-or the colorant in the amount of 0.1-0.5 mass % from the mass of the absolutely dry pigment. The technical result of the invention is the improved quality of the pigment and expansion of its field of application.

EFFECT: the invention ensures the improved quality of the pigment and expansion of the field of its application.

2 tbl

FIELD: pulp and paper industry; methods of production of the composite pigment for manufacture of the cardboard and paper.

SUBSTANCE: the invention is pertaining to the method of production of the composite pigment for manufacture of the cardboard and paper and may be used in pulp and paper industry at production of the filled paper, the coated paper and the cardboard. Calcium hydroxide is mixed with kaolin and added with aluminum sulfate in the aqueous medium at stirring. The aqueous medium contains the binding chosen from the group, which includes starch and polyvinyl alcohol in amount of 1.5-5.0 % from the mass of the absolutely dry pigment, and-or the water soluble colorant in amount of 0.1-0.5 % from the mass of the absolutely dry pigment. The technical result of the invention is the improvement of the composite pigment quality and expansion of its field of application.

EFFECT: the invention ensures improvement of the composite pigment quality and expansion of the field of its application.

2 tbl

FIELD: pulp and paper industry; methods of production of the pigment for manufacture of the cardboard and paper.

SUBSTANCE: the invention is pertaining to the method of production of the pigment for manufacture of the cardboard and paper and may be used in pulp and paper industry at production of the filled paper, the coated paper and the cardboard. In the water at intense stirring feed powders of calcium hydrate and calcium carbonate at the ratio of the indicated components accordingly from 1.0:2.2 up to 1.0:12.9. The produced suspension is gradually added with aluminum sulfate at its ratio to the total mass of the calcium hydroxide and calcium carbonate from 1.0:0.85 up to 1.0:4.30. Then the temperature of the mixture is increased up to 8О-85°С and the produced reaction mixture is kept at stirring within 90-180 minutes with formation of the dispersion of the pigment with the share of the dry substances in it equal to 20-35 %. Then the dispersion is dried and grinded into the powder. The powder is dispersed in the water containing the given amount of the dissolved coolant and-or binding - starch or polyvinyl alcohol. The technical result of the invention production of the pigment with the new properties, that allow to expand the field of its application at manufacture of various types of the cardboard and the paper.

EFFECT: the invention ensures production of the pigment with the new properties, expansion of the field of its application at manufacture of various types of the cardboard and the paper.

2 tbl

FIELD: paper-and-pulp industry.

SUBSTANCE: invention relates to pigment, which can be used in manufacture of paper with filler, coated paper, and cardboard. Calcium hydroxide and calcium carbonate powders taken in proportion between 1.0:2.2 and 1.0:23.5 are added to vigorously stirred water, after which temperature of mixture is raised to 80-85°C and resulting reaction mixture is kept being stirred for 90-180 min to form dispersion of pigment containing 20-35% solids.

EFFECT: improved quality of pigment at lower cost and extended application area.

3 tbl

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