CN103397565A - Papermaking coating and coating paper - Google Patents
Papermaking coating and coating paper Download PDFInfo
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- CN103397565A CN103397565A CN2013103489693A CN201310348969A CN103397565A CN 103397565 A CN103397565 A CN 103397565A CN 2013103489693 A CN2013103489693 A CN 2013103489693A CN 201310348969 A CN201310348969 A CN 201310348969A CN 103397565 A CN103397565 A CN 103397565A
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- calcium carbonate
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- papermaking paint
- papermaking
- kaolin
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Abstract
The invention provides a papermaking coating and a piece of coating paper. The papermaking coating comprises solid substances and water, wherein the solid substances comprise a pigment, a dispersant, a water resisting agent, a lubricant and a bonding agent, wherein the weight content of the pigment in the solid substances is 85%-88%; the pigment comprises calcium carbonate and kaolin; the weight content of the calcium carbonate in the pigment is 55%-95%. The calcium carbonate is used for replacing part of or all the kaolin to be used as a constituent part of the pigment so that not only can the production cost of the papermaking coating be saved, but also the requirements of various paper sheets on smoothness, covering capability, oil suction property and the like are met by the papermaking coating disclosed by the invention through adjusting the use amount of the calcium carbonate; meanwhile, the calcium carbonate is added in a form of slurry in a production process of the papermaking coating so that the problems that more dust is generated, the working environment is bad and the cost is too high when the kaolin is used as the pigment are improved or solved completely.
Description
Technical field
The present invention relates to field of papermaking, in particular to a kind of papermaking paint and coated paper.
Background technology
Coated paper is after the coating of coating take pigment as main component on the single or double of body paper, to carry out drying to be made.Coated paper can be as commercial printed articles such as poster, brochure, advertisement posters after polychrome printing or monochromatic citation, thereby is widely used in routine work and life.
at present, level and smooth in order to obtain, covering power is good, the high grade coated paper that oil absorption is suitable, generally in coating, to add coarse whiting (powdered whiting), calcined kaolin and/or water-washed kaoline, wherein the powdered whiting crystal formation is irregular, consumption is crossed the glossiness reduction that conference causes coated paper, paper is coarse, printing ink oil absorption variation, although water-washed kaoline and the high territory of calcining fine size, can improve the glossiness of paper, but its whiteness is lower, consumption is crossed the whiteness reduction that conference causes paper, and the kaolin price is higher, in production process, dust is larger, working environment is worsened.
Summary of the invention
The present invention aims to provide a kind of papermaking paint, to solve the problem of papermaking paint unstable properties in prior art.
To achieve these goals, according to an aspect of the present invention, a kind of papermaking paint is provided, comprise solid matter and water, described solid matter comprises pigment, dispersant, water repellent agent, lubricant and binding agent, the weight content of pigment described in solid matter is 85～88%, and pigment comprises calcium carbonate and kaolin, and in pigment, the weight content of calcium carbonate is 55～95%.
Further, in above-mentioned pigment, the weight content of calcium carbonate is 68～88%.
Further, above-mentioned calcium carbonate is comprised of fine particle calcium carbonate and coarse whiting, and in calcium carbonate, the weight content of fine particle calcium carbonate is 30～50%.
Further, in above-mentioned calcium carbonate, the weight content of fine particle calcium carbonate is 35～45%.
Further, in above-mentioned calcium carbonate granularity the particle content below 2 μ m the gross weight of calcium carbonate 88～98% between.
Further, upper kaolin is comprised of calcined kaolin and/or water-washed kaoline.
Further, in above-mentioned calcined kaolin and/or water-washed kaoline, the particle content of granularity below 2 μ m is not less than 85% of kaolinic gross weight.
Further, above-mentioned binding agent is the mixture of latex, polyvinyl alcohol and sodium cellulose glycolate.
According to a further aspect in the invention, provide a kind of coated paper, comprised the coating layer of body paper and covering body paper, coating layer is by forming at body paper surface-coated papermaking paint, and this papermaking paint is above-mentioned papermaking paint.
Further, the refractive index of the coating layer of above-mentioned coated paper is 1.59～1.61, and whiteness is 93.0～94.0%, and oil absorption is 22.4～23.0g/g.
Apply technical scheme of the present invention, using the calcium carbonate Substitute For Partial or all kaolin as the part of pigment, not only saved the cost of manufacture of papermaking paint, and made papermaking paint of the present invention meet the requirement of multiple paper to aspects such as smoothness, covering power and oil absorptions by the consumption of regulating calcium carbonate; Simultaneously calcium carbonate adds with the form of slurry in the manufacturing process of papermaking paint, thus improve or solved fully that the dust that brings while using kaolin as pigment is more, the problem of work under bad environment and high cost.
The specific embodiment
It should be noted that, in the situation that do not conflict, embodiment and the feature in embodiment in the application can make up mutually.Below in conjunction with embodiment, describe the present invention in detail.
In a kind of typical embodiment of the present invention, a kind of papermaking paint is provided, comprise solid matter and water, solid matter comprises pigment, dispersant, water repellent agent, lubricant and binding agent, in above-mentioned solid matter, the weight content of pigment is 85～88%, pigment comprises calcium carbonate and kaolin, and in pigment, the weight content of calcium carbonate is 55～95%.
Papermaking paint of the present invention using the calcium carbonate Substitute For Partial or all kaolin as the part of pigment, not only saved the cost of manufacture of papermaking paint, and made papermaking paint of the present invention meet the requirement of multiple paper to aspects such as smoothness, covering power and oil absorptions by the consumption of regulating calcium carbonate; Simultaneously calcium carbonate adds with the form of slurry in the manufacturing process of papermaking paint, thereby improves or solved fully that the dust that brings while using kaolin as pigment is more, the problem of work under bad environment.
In a kind of preferred embodiment of the present invention, in above-mentioned pigment, the weight content of calcium carbonate is 68～88%.Whiteness and the oil absorption of the coating in above-described embodiment are further optimized.
Above-mentioned calcium carbonate is comprised of fine particle calcium carbonate and coarse whiting, and in calcium carbonate, the weight content of fine particle calcium carbonate is 30～50%.Adopt coarse whiting and fine particle calcium carbonate to mix the calcium carbonate use of the calcium carbonate of composition as this law, oil absorption that on the one hand can the flexible modulation papermaking paint, can control the cost of papermaking paint on the other hand, in the time of between the weight content by fine particle calcium carbonate in calcium carbonate is controlled at 30～50%, can make papermaking paint of the present invention can meet the requirement of most of kind paper again can be suitably cost-saving.The present invention is for only with performances such as the smoothness of optimizing papermaking paint, oil absorptions, and in further preferred calcium carbonate, the weight content of fine particle calcium carbonate is 35～45%.
In order to keep papermaking paint of the present invention in the smoothness that is applied on paper, in preferred above-mentioned calcium carbonate granularity the particle content below 2 μ m the gross weight of calcium carbonate 88～98% between.
In the present invention, the kaolin in above-mentioned coating is comprised of calcined kaolin and/or water-washed kaoline.Reserve part kaolin in original pigment, utilize the cooperation of kaolin and calcium carbonate, makes the parameters such as smoothness, covering power, whiteness, oil absorption of papermaking paint have larger adjustable extent, and then make it meet a greater variety of stationeries application.Select the part of calcined kaolin as pigment, can increase to a certain extent whiteness and the oil factor of papermaking paint.
Same in order to keep papermaking paint of the present invention in the smoothness that is applied on paper, in preferred above-mentioned calcined kaolin and/or described water-washed kaoline, the particle content of granularity below 2 μ m is not less than 85% of kaolinic gross weight.
Can be used for the mixture that binding agent of the present invention is latex, polyvinyl alcohol and sodium cellulose glycolate.
In a kind of preferred embodiment of the present invention, by the proportioning of suitable adjusting binding agent, pigment, preferred above-mentioned papermaking paint viscosity at room temperature was 1150～1300 milli handkerchief seconds.
In the another kind of typical embodiment of the present invention, a kind of coated paper is provided, comprise the coating layer of body paper and covering body paper, coating layer is by forming at body paper surface-coated papermaking paint, and above-mentioned papermaking paint is above-mentioned papermaking paint.Coated paper with papermaking paint of the present invention, smoothness, covering power, oil absorption and whiteness all can be regulated according to the actual requirements, therefore have a wide range of applications.The refractive index of the coating layer of preferred above-mentioned coated paper is 1.59～1.61, and whiteness is 93.0～94.0%, and oil absorption is 22.4～23.0g/g.
Below with reference to embodiment and Comparative Examples, further illustrate beneficial effect of the present invention.
According to the composition Preparation Example 1 to 8 of the papermaking paint shown in table 1 and the papermaking paint of Comparative Examples 1.And adopt NDJ-5S numeral rotary viscometer to detect the viscosity of resulting papermaking paint.
Table 1
Wherein, the particle content of the calcium carbonate granularity of embodiment 1 and embodiment 2 below 2 μ m is 95%, and in kaolin, the particle content of granularity below 2 μ m is 95%; The particle content of the calcium carbonate granularity of embodiment 3 and embodiment 4 below 2 μ m is 88%, and in kaolin, the particle content of granularity below 2 μ m is 95%; The particle content of the calcium carbonate granularity of embodiment 5 below 2 μ m is 98%, and in kaolin, the particle content of granularity below 2 μ m is 90%; The particle content of the calcium carbonate granularity of embodiment 6 below 2 μ m is 85%; The particle content of the calcium carbonate granularity of embodiment 7 below 2 μ m is 95%.The particle content of the calcium carbonate granularity of embodiment 8 below 2 μ m is 85%, and in kaolin, the particle content of granularity below 2 μ m is 92%; The particle content of the calcium carbonate granularity of Comparative Examples 1 below 2 μ m is 95%, and in kaolin, the particle content of granularity below 2 μ m is 90%
By the papermaking paint in resulting embodiment 1 to 8 and Comparative Examples 1 and 2 according to 10g/m
2Coating weight be coated on identical paper, and the performance of this coated paper is tested, test result, in Table 2, wherein adopts WAY-2S numeral Abbe refractometer to measure refractive index, adopts the GB/T5950 method to measure whiteness; Adopt the GB/T5211.15 method to measure oil absorption.
Table 2
| ? | Refractive index | Whiteness (%) | Oil absorption (g/g) |
| Embodiment 1 | 1.61 | 93.0 | 22.4 |
| Embodiment 2 | 1.61 | 93.2 | 22.5 |
| Embodiment 3 | 1.59 | 92.9 | 22.0 |
| Embodiment 4 | 1.60 | 93.0 | 22.3 |
| Embodiment 5 | 1.61 | 93.5 | 23.0 |
| Embodiment 6 | 1.61 | 93.8 | 22.8 |
| Embodiment 7 | 1.61 | 94.0 | 22.6 |
| Embodiment 8 | 1.60 | 93.7 | 22.7 |
| Comparative Examples 1 | 1.63 | 92.0 | 26 |
By the data in table 2, can be found out, the parameters of the paper making pulp of embodiment 1 to 8 is comparatively stable, and especially the performance of oil absorption is better, is adapted to the application requirements of most of papermaking paint.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (10)
1. papermaking paint, comprise solid matter and water, described solid matter comprises pigment, dispersant, water repellent agent, lubricant and binding agent, it is characterized in that, the weight content of pigment described in described solid matter is 85～88%, described pigment comprises calcium carbonate and kaolin, and the weight content of calcium carbonate described in described pigment is 55～95%.
2. papermaking paint according to claim 1, is characterized in that, the weight content of calcium carbonate described in described pigment is 68～88%.
3. papermaking paint according to claim 2, is characterized in that, described calcium carbonate is comprised of fine particle calcium carbonate and coarse whiting, and the weight content of fine particle calcium carbonate described in described calcium carbonate is 30～50%.
4. papermaking paint according to claim 3, is characterized in that, the weight content of fine particle calcium carbonate described in described calcium carbonate is 35～45%.
5. papermaking paint according to claim 1, is characterized in that, in described calcium carbonate granularity the particle content below 2 μ m the gross weight of described calcium carbonate 88～98% between.
6. the described papermaking paint of any one according to claim 1 to 5, is characterized in that, described kaolin is comprised of calcined kaolin and/or water-washed kaoline.
7. papermaking paint according to claim 6, is characterized in that, in described calcined kaolin and/or described water-washed kaoline, the particle content of granularity below 2 μ m is not less than 85% of described kaolinic gross weight.
8. the described papermaking paint of any one according to claim 1 to 5, is characterized in that, described binding agent is the mixture of latex, polyvinyl alcohol and sodium cellulose glycolate.
9. a coated paper, comprise body paper and the coating layer that covers described body paper, and described coating layer passes through to form at described body paper surface-coated papermaking paint, it is characterized in that, described papermaking paint is the described papermaking paint of any one in claim 1 to 8.
10. coated paper according to claim 9, is characterized in that, the refractive index of the coating layer of described coated paper is 1.59～1.61, and whiteness is 93.0～94.0%, and oil absorption is 22.4～23.0g/g.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103489693A CN103397565A (en) | 2013-08-12 | 2013-08-12 | Papermaking coating and coating paper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103489693A CN103397565A (en) | 2013-08-12 | 2013-08-12 | Papermaking coating and coating paper |
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| CN103397565A true CN103397565A (en) | 2013-11-20 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1508199A (en) * | 2002-12-19 | 2004-06-30 | 上海东升新材料有限公司 | Coating for parper making surface finishing |
| CN1789552A (en) * | 2005-12-12 | 2006-06-21 | 金东纸业(江苏)有限公司 | High-whiteness coated paper and its production method |
| US20070202281A1 (en) * | 2006-02-28 | 2007-08-30 | Degussa Corporation | Colored paper and substrates coated for enhanced printing performance |
| CN101581058A (en) * | 2009-06-05 | 2009-11-18 | 山东凯丽特种纸股份有限公司 | Method for producing coating light-weight super-sensitive paper |
| CN101967000A (en) * | 2010-07-14 | 2011-02-09 | 山东海泽纳米材料有限公司 | Method for preparing high-solid-content and low-viscosity suspended nano calcium carbonate slurry and re-suspended nano calcium carbonate power |
-
2013
- 2013-08-12 CN CN2013103489693A patent/CN103397565A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1508199A (en) * | 2002-12-19 | 2004-06-30 | 上海东升新材料有限公司 | Coating for parper making surface finishing |
| CN1789552A (en) * | 2005-12-12 | 2006-06-21 | 金东纸业(江苏)有限公司 | High-whiteness coated paper and its production method |
| US20070202281A1 (en) * | 2006-02-28 | 2007-08-30 | Degussa Corporation | Colored paper and substrates coated for enhanced printing performance |
| CN101581058A (en) * | 2009-06-05 | 2009-11-18 | 山东凯丽特种纸股份有限公司 | Method for producing coating light-weight super-sensitive paper |
| CN101967000A (en) * | 2010-07-14 | 2011-02-09 | 山东海泽纳米材料有限公司 | Method for preparing high-solid-content and low-viscosity suspended nano calcium carbonate slurry and re-suspended nano calcium carbonate power |
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Application publication date: 20131120 |