CN104389239A - Paint and coated paper - Google Patents
Paint and coated paper Download PDFInfo
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- CN104389239A CN104389239A CN201410510872.2A CN201410510872A CN104389239A CN 104389239 A CN104389239 A CN 104389239A CN 201410510872 A CN201410510872 A CN 201410510872A CN 104389239 A CN104389239 A CN 104389239A
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- bentonite
- polyvinyl alcohol
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Abstract
The invention discloses paint and coated paper. The paint comprises polyvinyl alcohol, bentonite and water, and the bentonite is obtained by performing cationic activation modification on natural bentonite. Through the above manner, the printing ink drying speed and the paint glossiness are improved.
Description
Technical field
The present invention relates to pulp technology for making paper, particularly relate to a kind of coating and coated paper.
Background technology
Current numerial code spray drawing technology has occupied main market, commercial printing field, along with the continuous breakthrough of digital product technology, the requirement of logarithmic code spray printed effect and printing speed is also more and more higher, thus also day by day harsh to the quality requirement of spray printed paper product, especially to the requirement of glossiness and rate of drying.
The pigment of the numerial code spray drawing coated paper for printing coating of current high rate of drying is mainly based on silica or alumina silicate system, the advantage of silica and alumina silicate coating is that absorbency is strong, but blotting amount is excessive during spray printed, ink infiltrates into paper inside mostly, and the set of coating surface ink is few, imaged color saturation degree is low, print coarse, glossiness is low.
Summary of the invention
The technical problem that the present invention mainly solves is to provide a kind of coating and coated paper, can improve the glossiness of ink drying rates and coating.
For solving the problems of the technologies described above, the technical scheme that the present invention adopts is: provide a kind of coating, described coating comprises polyvinyl alcohol, bentonite and water, and described bentonite is obtained through cationic activation modification by natural montmorillonite.
Wherein, described bentonite obtains sodium bentonite by natural montmorillonite through sodium ion activation modification.
Wherein, described polyvinyl alcohol is 100 parts by mass, and described sodium bentonite is 20 ~ 40 parts by mass.
Wherein, described coating also comprises ethanol, and described ethanol is 15 ~ 50 parts by mass.
Wherein, described coating also comprises glyoxal, and described glyoxal is 0.1 ~ 2 parts by mass.
Wherein, described coating also comprises defoamer, and described defoamer is 0.1 ~ 1 parts by mass.
Wherein, the degree of polymerization of described polyvinyl alcohol is 300 ~ 2500.
Wherein, the solid content of described coating is 10% ~ 20%.
For solving the problems of the technologies described above, another technical solution used in the present invention is: provide a kind of coated paper, comprise base paper, described base paper has two opposing outer surfaces, and at least one outer surface of described base paper has the coating layer formed by above-mentioned coating.
Wherein, the coating weight of described coated paper is 2 ~ 15 grams every square metre.
The invention has the beneficial effects as follows: the situation being different from prior art, the present invention is with high penetration, the polyvinyl alcohol of better mechanical strength is as coating framework, the bentonite obtained through cationic activation modification by natural montmorillonite has multilayer shape di-octahedral structure, in coatings process, poly-vinyl alcohol solution and bentonite are inlayed mutually wherein, bentonite is made to strut fine and close polyvinyl alcohol membrane structure, self expand and adsorb poly-vinyl alcohol solution and moisture, coating rapid curing is made under lower temperature conditions, and it is high to form macroscopical smoothness, but the coating surface structure that asperity is large, the high coating gloss that makes of macroscopic view smoothness is high, simultaneously can in paper surface uniform spreading when a certain amount of spray printed printing ink transfer amount, local roughness height then can strengthen the pull-out capacity of ink at coating surface, improve saturation degree and the definition of imaging.
Detailed description of the invention
Embodiment of the present invention provides a kind of coating, comprises polyvinyl alcohol and bentonite water, and bentonite is obtained through cationic activation modification by natural montmorillonite.
The coating of embodiment of the present invention is mixed by polyvinyl alcohol, bentonite and water, is main component, is equipped with appropriate bentonite with polyvinyl alcohol water solution; Polyvinyl alcohol is white plates, cotton-shaped or pulverulent solids, easy film forming, and the mechanicalnesses such as the TENSILE STRENGTH of its film are excellent, permeability is high; Bentonite is obtained through cationic activation modification by natural montmorillonite, natural montmorillonite is the moisture clay pit based on montmorillonite, natural montmorillonite mineral crystal is generally electronegative, therefore will adsorb the CATION of the opposite charges of equivalent on bentonite clay particle surface; CATION in the bentonite of embodiment of the present invention is inorganic cation, and the bentonite with inorganic cation has hydrophilic oleophobic property, can improve the affinity of coating for air brushing use ink.The water of embodiment of the present invention can be deionized water or distilled water etc.
Embodiment of the present invention is with high penetration, the polyvinyl alcohol of better mechanical strength is as coating framework, the bentonite obtained through cationic activation modification by natural montmorillonite has multilayer shape di-octahedral structure, in coatings process, poly-vinyl alcohol solution and bentonite are inlayed mutually wherein, bentonite is made to strut fine and close polyvinyl alcohol membrane structure, self expand and adsorb poly-vinyl alcohol solution and moisture, coating rapid curing is made under lower temperature conditions, and form the high but coating surface structure that asperity is large of macroscopical smoothness, the high coating gloss that makes of macroscopic view smoothness is high, simultaneously can in paper surface uniform spreading when a certain amount of spray printed printing ink transfer amount, local roughness height then can strengthen the pull-out capacity of ink at coating surface, improve saturation degree and the definition of imaging.
Wherein, bentonite obtains sodium bentonite by natural montmorillonite through sodium ion activation modification, relative to other bentonite, sodium bentonite has better expansion character, fine and close polyvinyl alcohol membrane structure is more easily strutted in coating, also can adsorb more juicy, accelerate the rate of drying of coating.Certainly, in other embodiments of the present invention, other cationic activation modifications such as calcium-base bentonite can also be used and the bentonite obtained.
Wherein, polyvinyl alcohol is 100 parts by mass; Sodium bentonite is 20 ~ 40 parts by mass, such as 20 parts by mass, 30 parts by mass or 40 parts by mass etc.
Wherein, coating also comprises ethanol, and ethanol is 15 ~ 50 parts by mass, such as 15 parts by mass, 30 parts by mass or 50 parts by mass etc.; Add a certain amount of ethanol and be conducive to the dispersion of bentonite in poly-vinyl alcohol solution, increase the uniformity coefficient of the dried hydrophily of coating and pull-out capacity.
Wherein, coating also comprises glyoxal, and glyoxal is 0.1 ~ 2 parts by mass, such as 0.1 parts by mass, 1 parts by mass or 2 parts by mass etc.; Add a certain amount of glyoxal, contribute to the resistance to water improving coating.
Wherein, coating also comprises defoamer, and defoamer is 0.1 ~ 1 parts by mass, such as 0.1 parts by mass, 0.5 parts by mass or 1 parts by mass etc.; Defoamer can eliminate the foam in coating, improves its surface smoothness, and the defoamer in present embodiment can adopt organosiloxane etc.
Wherein, the degree of polymerization of polyvinyl alcohol is 300 ~ 2500, and the degree of polymerization of such as polyvinyl alcohol is 300,700 or 2500 etc.; The degree of polymerization weighs the index of polymer molecular weight size, and with construction unit number for benchmark, the degree of polymerization is contained single structure number of unit on polymer macromolecule chain.
Wherein, the solid content of coating is 10% ~ 20%, such as 10%, 15% or 20% etc., solid content in present embodiment is that coating remainder quality after 120 degrees Celsius infrared and 125 are degree Celsius hot-air seasonings accounts for the percentage of former coating gross mass, the solid content of coating of the present invention is fixed with coating weight, usually, coating weight is high, and solid content also can require higher.
Another embodiment of the present invention provides a kind of coated paper, comprise base paper, base paper has two opposing outer surfaces, at least one outer surface of base paper has the coating layer formed by above-mentioned coating, coating is surperficial with base paper by the coating method coating of this area routine, and coating method can be the coating of coiling rod, scraper for coating and airblade coating etc.
After the coated paper of embodiment of the present invention adds 125 degrees Celsius of heated-air dryings through 120 degrees Celsius infrared, there is good planarization, splendid glossiness and uniform pore structure, can be used for spray printed, test through Epson Stylus Pro9800 type equipment spray printed, high glaze, imaging clearly, color is beautiful and rate of drying is fast press quality all can be obtained, for different inkjet printing user has larger parameter adjustment space under the service condition of varying environment, different printer under high-low resolution.
Wherein, the coating weight of coated paper is 2 ~ 15g/m
2(gram every square metre), such as 2g/m
2, 7g/m
2or 15g/m
2deng, in an alternative embodiment of the invention, the coating weight of coated paper is 4 ~ 8g/m
2, such as 4g/m
2, 6g/m
2or 8g/m
2deng.
Below by detailed description of the invention, the present invention will be further described:
Embodiment 1
The coating of present embodiment comprise the 100 parts by mass degree of polymerization be 700 polyvinyl alcohol, 20 parts by mass sodium bentonites, 15 parts by mass ethanol, 0.5 parts by mass glyoxal and 0.5 parts by mass defoamer, the solid content of coating is 11%, and the coated paper coating weight of present embodiment is 2g/m
2, by the mode of coiling rod by coatings in base paper surface, add 125 DEG C of heated-air dryings through 120 DEG C infrared and obtain, the basic weight of base paper is 120g/m
2.
Embodiment 2
The coating of present embodiment comprise the 100 parts by mass degree of polymerization be 700 polyvinyl alcohol, 30 parts by mass sodium bentonites, 30 parts by mass ethanol, 0.5 parts by mass glyoxal and 0.5 parts by mass defoamer, the solid content of coating is 14%, and the coated paper coating weight of present embodiment is 4g/m
2, by the mode of coiling rod by coatings in base paper surface, add 125 DEG C of heated-air dryings through 120 DEG C infrared and obtain, the basic weight of base paper is 120g/m
2.
Embodiment 3
The coating of present embodiment comprise the 100 parts by mass degree of polymerization be 700 polyvinyl alcohol, 30 parts by mass sodium bentonites, 35 parts by mass ethanol, 0.5 parts by mass glyoxal and 0.5 parts by mass defoamer, the solid content of coating is 17%, and the coated paper coating weight of present embodiment is 7g/m
2, by the mode of coiling rod by coatings in base paper surface, add 125 DEG C of heated-air dryings through 120 DEG C infrared and obtain, the basic weight of base paper is 120g/m
2.
Embodiment 4
The coating of present embodiment comprise the 100 parts by mass degree of polymerization be 700 polyvinyl alcohol, 40 parts by mass sodium bentonites, 50 parts by mass ethanol, 0.5 parts by mass glyoxal and 0.5 parts by mass defoamer, the solid content of coating is 19%, and the coated paper coating weight of present embodiment is 10g/m
2, by the mode of coiling rod by coatings in base paper surface, add 125 DEG C of heated-air dryings through 120 DEG C infrared and obtain, the basic weight of base paper is 120g/m
2.
Control group
The average grain diameter that coating comprises 100 parts by mass is the silica of 30 nanometers, the solid content of 5 parts by mass is the color-fixing agent of 35, the degree of polymerization of 15 parts by mass is 100 polyvinyl alcohol and 0.5 parts by mass defoamer; Coated paper coating weight is 7g/m
2, by the mode of coiling rod by coatings in base paper surface, add 125 DEG C of heated-air dryings through 120 DEG C infrared and obtain, the basic weight of base paper is 120g/m
2.
Table 1 is formulation for coating material and coated paper spray printed measure of merit result in embodiment 1 ~ 4 and control group.
Table 1
As can be seen from Table 1, relatively and control group, coating in embodiment 1 ~ 4 is not containing silica and color-fixing agent, take polyvinyl alcohol as coating main component, the glossiness of gained coated paper improves the percentage point of about 20, absorbency and rate of drying also remain on a preferably level, while raising sheet gloss, ensure that paper spray printed efficiency, overcome low luster, the imaging of silica and alumina silicate pigment formula coarse, low and deep and need the limitation of special producing equipment.
The foregoing is only embodiments of the present invention; not thereby the scope of the claims of the present invention is limited; every utilize description of the present invention to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical field, be all in like manner included in scope of patent protection of the present invention.
Claims (10)
1. a coating, is characterized in that, described coating comprises polyvinyl alcohol and bentonite, and described bentonite is obtained through cationic activation modification by natural montmorillonite.
2. coating according to claim 1, is characterized in that, described bentonite obtains sodium bentonite by natural montmorillonite through sodium ion activation modification.
3. coating according to claim 2, is characterized in that, described polyvinyl alcohol is 100 parts by mass, and described sodium bentonite is 20 ~ 40 parts by mass.
4. coating according to claim 3, is characterized in that, described coating also comprises ethanol, and described ethanol is 15 ~ 50 parts by mass.
5. coating according to claim 3, is characterized in that, described coating also comprises glyoxal, and described glyoxal is 0.1 ~ 2 parts by mass.
6. coating according to claim 3, is characterized in that, described coating also comprises defoamer, and described defoamer is 0.1 ~ 1 parts by mass.
7. the coating according to any one of claim 1 to 6, is characterized in that, the degree of polymerization of described polyvinyl alcohol is 300 ~ 2500.
8. the coating according to any one of claim 1 to 6, is characterized in that, the solid content of described coating is 10% ~ 20%.
9. a coated paper, comprises base paper, and described base paper has two opposing outer surfaces, it is characterized in that, at least one outer surface of described base paper has the coating layer formed by the coating described in claim 1 ~ 8 any one.
10. coated paper according to claim 9, is characterized in that, the coating weight of described coated paper is 2 ~ 15 grams every square metre.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410510872.2A CN104389239A (en) | 2014-09-28 | 2014-09-28 | Paint and coated paper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410510872.2A CN104389239A (en) | 2014-09-28 | 2014-09-28 | Paint and coated paper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104389239A true CN104389239A (en) | 2015-03-04 |
Family
ID=52607192
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410510872.2A Pending CN104389239A (en) | 2014-09-28 | 2014-09-28 | Paint and coated paper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104389239A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106320080A (en) * | 2016-09-30 | 2017-01-11 | 无锡市长安曙光手套厂 | Coating and coated paper |
| CN106638119A (en) * | 2016-09-30 | 2017-05-10 | 无锡市长安曙光手套厂 | Coated paper |
| CN112111995A (en) * | 2020-09-17 | 2020-12-22 | 西安交通大学 | Preparation method of montmorillonite modified transformer insulation paper |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001014147A1 (en) * | 1999-08-23 | 2001-03-01 | Engelhard Corporation | Coated paper |
| CN1784458A (en) * | 2003-05-02 | 2006-06-07 | 赫尔克里士公司 | Aqueous systems containing additive pre-mixes and processes forming the same |
| CN1837463A (en) * | 2006-03-28 | 2006-09-27 | 孝睿 | Bentonite based nano silicon micro-porous membrane, its preparation method and digital photo paper employing the same |
| WO2009112255A1 (en) * | 2008-03-14 | 2009-09-17 | Tetra Laval Holdings & Finance S.A. | Packaging laminate, method for manufacturing of the packaging laminate and packaging container produced therefrom |
| CN102218907A (en) * | 2010-03-29 | 2011-10-19 | 富士胶片株式会社 | Image forming method |
-
2014
- 2014-09-28 CN CN201410510872.2A patent/CN104389239A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001014147A1 (en) * | 1999-08-23 | 2001-03-01 | Engelhard Corporation | Coated paper |
| CN1784458A (en) * | 2003-05-02 | 2006-06-07 | 赫尔克里士公司 | Aqueous systems containing additive pre-mixes and processes forming the same |
| CN1837463A (en) * | 2006-03-28 | 2006-09-27 | 孝睿 | Bentonite based nano silicon micro-porous membrane, its preparation method and digital photo paper employing the same |
| WO2009112255A1 (en) * | 2008-03-14 | 2009-09-17 | Tetra Laval Holdings & Finance S.A. | Packaging laminate, method for manufacturing of the packaging laminate and packaging container produced therefrom |
| CN102218907A (en) * | 2010-03-29 | 2011-10-19 | 富士胶片株式会社 | Image forming method |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106320080A (en) * | 2016-09-30 | 2017-01-11 | 无锡市长安曙光手套厂 | Coating and coated paper |
| CN106638119A (en) * | 2016-09-30 | 2017-05-10 | 无锡市长安曙光手套厂 | Coated paper |
| CN112111995A (en) * | 2020-09-17 | 2020-12-22 | 西安交通大学 | Preparation method of montmorillonite modified transformer insulation paper |
| CN112111995B (en) * | 2020-09-17 | 2021-10-15 | 西安交通大学 | Preparation method of montmorillonite modified transformer insulation paper |
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Application publication date: 20150304 |
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