CN102619136B - Carbonless copy paper - Google Patents
Carbonless copy paper Download PDFInfo
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- CN102619136B CN102619136B CN201210114237.3A CN201210114237A CN102619136B CN 102619136 B CN102619136 B CN 102619136B CN 201210114237 A CN201210114237 A CN 201210114237A CN 102619136 B CN102619136 B CN 102619136B
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Abstract
The invention discloses carbonless copy paper. The carbonless copy paper comprises base paper, a pre-coating formed on the surface of the base paper and a color development layer formed on the surface of the pre-coating, wherein the pre-coating contains filler and adhesive, or the pre-coating contains filler, adhesive and wax substance; and the pre-coating contains 50 to 60 mass percent of filler, 40 to 50 mass percent of adhesive, and 0 to 10 mass percent of wax substance. Because the pre-coating is coated on the surface of the base paper, exposure of fibers on the surface of the base paper can be reduced, holes in the surface of the paper are filled, problems about missing coating, shifting and the like in the subsequent process of coating the color development layer can be solved, the color development layer is coated uniformly, exposure points are reduced, and color development and printing of the color development layer are greatly improved. Moreover, the invention also provides a preparation method for the carbonless copy paper.
Description
Technical field
The present invention relates to a kind of no carbon paper.
Background technology
No carbon paper is a kind of carbon paper of novelty, and its surface-coated has special coating, contains leuco dye and the Receptive acid colour development material of electronics with pressure-sensitive effect and giving property of electronics confession in this coating.Utilize leuco dye and colour development material that chemical color reaction occurs, directly colour generation on paper, thereby on paper the information such as display text, pattern.At present, producer all wishes, in ensureing no carbon paper quality, to reduce its production cost as far as possible.By promoting the curtain coater speed of a motor vehicle to improve the output of no carbon paper, in coating process, there will be the phenomenons such as point, holiday that show money or valuables one carries unintentionally, thereby affect the quality of no carbon paper.In addition, the body paper of no carbon paper surface majority exists that fiber is exposed, hole, the apparent defect such as coarse, has greatly affected the quality of no carbon paper.
Summary of the invention
In view of this, be necessary to provide a kind of no carbon paper effectively addressing the above problem.
In addition, be also necessary to provide a kind of preparation method of above-mentioned no carbon paper.
A kind of no carbon paper, it comprises body paper and chromonic layer, and this no carbon paper also comprises precoated shet, and this precoated shet is formed at body paper surface, and the surface that this chromonic layer is formed at this precoated shet is located between original paper layer and chromonic layer precoated shet; In this precoated shet, contain filler and adhesive, or in this precoated shet, contain filler, adhesive and wax material, wherein the quality percentage composition of filler is 50%-60%, and the quality percentage composition of adhesive is 40%-50%, and the quality percentage composition of wax material is 0%-10%.
A preparation method for no carbon paper, it comprises the steps:
Initial body paper is provided;
At this body paper one surface-coated first coating fluid the dry precoated shet that forms, in this first coating fluid, contain filler and adhesive, or in this first coating fluid, contain filler, adhesive and wax material, wherein in this first coating fluid, the quality percentage composition of filler is 50%-60%, the quality percentage composition of adhesive is 40%-50%, and the quality percentage composition of wax material is 0%-10%;
In this precoated shet surface-coated second coating fluid the dry chromonic layer that forms.
No carbon paper of the present invention is at the densification of body paper surface-coated, level and smooth precoated shet, not only can reduce the exposed of body paper surface fiber, fill up paper hole, and in the process of follow-up coating chromonic layer, also can reduce the problem such as holiday, displacement, make chromonic layer be coated with more evenly, reduced the generation of a phenomenon that shows money or valuables one carries unintentionally, greatly improved color development and the printing of chromonic layer.
Brief description of the drawings
Fig. 1 is the generalized section of the no carbon paper of a preferred embodiment of the present invention.
Main element symbol description
| No |
100 |
| |
10 |
| Precoated |
11 |
| |
13 |
Following detailed description of the invention further illustrates the present invention in connection with above-mentioned accompanying drawing.
Detailed description of the invention
The preparation method of the no carbon paper 100 (as shown in Figure 1) of the present invention's one preferred embodiments, it comprises the steps:
(1) provide initial body paper 10
This body paper 10 is the body paper of general common no carbon paper, preferably adopt in hardwood pulp (LBKP) or softwood pulp (NBKP) and CTMP (BCTMP) one or both with hardwood pulp mix that starching manufactures paper with pulp makes, and the quality percentage composition of hardwood pulp is 70-100%, the quality percentage composition of softwood pulp is 0-10%, and the quality percentage composition of CTMP is 0-20%.This slurry of manufacturing paper with pulp body paper 10 is added with suitable chemicals, dry strength agent etc., to ensure the intensity of body paper 10, guarantees carrying out smoothly of follow-up coating section.
For the physical index of this body paper 10, mainly need to control its degree of sizing, COBB value (paper water absorbing properties parameter) and air permeability.For degree of sizing, require be controlled at 5Sec and more than, degree of sizing is the more superior and more good; COBB value requires to be controlled at 15-35g/cm
2; The air permeability required time of gas of unit volume (see through) require to reach 13sec/100cc and more than.
(2) prepare the first coating fluid and be coated with
The component of this first coating fluid comprises filler and adhesive, also can further comprise wax material, and wherein the quality percentage composition of filler is 50%-60%, and the quality percentage composition of adhesive is 40%-50%, and the quality percentage composition of wax material is 0%-10%.
This filler is papermaking customary filler, specifically can be calcium carbonate, talcum powder, mineral fibres, mica, titanium dioxide or filler level china clay.
This adhesive is the adhesive that conventional Paper Coating liquid uses, and specifically can be derivatives of modified glucose adhesive, modified polyvinyl acetate adhesive, modification paper grade (stock) adhesive, cationic starch/vinylacetate mixed adhesive, polyurethane hot melt adhesives or paste polyvinyl acetal composite adhesive.
This wax material is cation paraffin emulsion, and it can improve compactness and the spreadability of coating, improves air permeability and the smoothness of body paper 10.
This first coating fluid also can add a certain amount of water, makes the solid content of this first coating fluid reach 15-25%, and viscosity reaches 12-16cps.
This first coating fluid is coated to the surface of body paper 10.Can use coating machine or other coating method, and coating weight is 4-6g/m
2.
This first coating fluid forms precoated shet 11 after drying.The dry moisture content removal making in the first coating fluid, adhesive and wax material are coated by filler, form the precoated shet 11 of solid.The thickness of the precoated shet 11 of this solid is 1-2 μ m.
(3) prepare the second coating fluid and be coated with
The second coating fluid using in this step can be the coating fluid of conventional no carbon paper.
This second coating fluid comprises that parts by weight are respectively the dispersant of the developer of the latex of the starch of the pigment of 5-100 part, 0-20 part, 0-25 part, 5-25 part, 0.1-4 part and the interfacial agent of 0.1-3 part.
This pigment can be one or more in grinding calcium carbonate, winnofil, china clay, carclazyte, calcining carclazyte, aluminium hydroxide, titanium dioxide, talcum powder.
This starch can be one or more in potato starch, cornstarch, tapioca and wheaten starch.
This latex can be one or more in styrene-butadiene latex, carboxylic styrene butadiene latex, carboxyl fourth cyanogen latex and polyacrylic ester latex.
This developer can be one or more in atlapulgite, zinc salicylate and phenolic resins.
This dispersant can be one or more in the polyphosphate such as calgon, sodium pyrophosphate, Sodium Polyacrylate and carboxylate.
This interfacial agent can be one or more in sulfosuccinate, acetylene ethylene glycol.
Use coating machine this second coating fluid to be coated to the surface of precoated shet 11, coating weight is 2.5-4.5g/m
2.After this second coating fluid drying dehydration, form the chromonic layer 13 of solid.The thickness of this chromonic layer 13 is 4-5 μ m.
No carbon paper 100 of the present invention is at body paper 10 surface-coated densifications, level and smooth precoated shet 11, not only can reduce the exposed of body paper 10 surface fibers, fill up paper hole, and in the process of follow-up coating chromonic layer 13, also can reduce the problem such as holiday, displacement, make chromonic layer 13 be coated with more evenly, reduced the generation of a phenomenon that shows money or valuables one carries unintentionally, greatly improved color development and the printing of chromonic layer 13.
Refer to Fig. 1, no carbon paper 100 of the present invention, it comprises body paper 10, is formed at the precoated shet 11 on body paper 10 surfaces and is formed at the chromonic layer 13 on precoated shet 11 surfaces.
This body paper 10 is conventional carbonless copying body paper, preferably adopt in softwood pulp (NBKP) or hardwood pulp (LBKP) and CTMP (BCTMP) one or both with softwood pulp mix that starching manufactures paper with pulp makes, and the quality percentage composition of hardwood pulp is 70-100%, the quality percentage composition of softwood pulp is 0-10%, and the quality percentage composition of CTMP is 0-20%.In this precoated shet 11, contain filler and adhesive, or in this precoated shet 11, contain filler, adhesive and wax material, wherein the quality percentage composition of filler is 50%-60%, and the quality percentage composition of adhesive is 40%-50%, and the quality percentage composition of wax material is 0%-10%.The thickness of this precoated shet 11 is 1-2 μ m.
This filler can be calcium carbonate, talcum powder, mineral fibres, mica, titanium dioxide or filler level china clay.This adhesive can be derivatives of modified glucose adhesive, modified polyvinyl acetate adhesive, modification paper grade (stock) adhesive, cationic starch/vinylacetate mixed adhesive, polyurethane hot melt adhesives or paste polyvinyl acetal composite adhesive.This wax material is cation paraffin emulsion.
This chromonic layer 13 can contain the pigment that parts by weight are respectively 5-100 part, the starch of 0-20 part, the latex of 0-25 part, developer, the dispersant of 0.1-4 part and the interfacial agent of 0.1-3 part of 5-25 part.The thickness of this chromonic layer 13 is 4-5 μ m.
Below by specific embodiment, the present invention is described further.
Embodiment 1
Body paper 10: slurry adopts 100% hardwood pulp, the grammes per square metre of manufacturing paper with pulp 46gsm (gram per square meter, every square meter grammes per square metre).
The first coating fluid formula: adopt 60 parts, calcium carbonate, 40 parts of adhesive (latex, starch etc. mix and make in the ratio of 2:3), 10 parts of cation paraffin emulsions.
The second coating fluid formula: pigment adopts 60 parts, calcium carbonate, 40 parts of china clay, starch adopts 12 parts of tapiocas, latex adopts 12 parts of styrene-butadiene latexes, developer adopts 22 parts of zinc salicylates, and interfacial agent adopts 0.5 part of sulfosuccinate, and dispersant adopts 0.8 part of calgon.
Embodiment 2
Body paper 10: slurry adopts the mixing slurry of 90% hardwood pulp and 10% CTMP, the grammes per square metre of manufacturing paper with pulp 46gsm.
The first coating fluid formula: adopt 55 parts, calcium carbonate, 45 parts of adhesive, 5 parts of cation paraffin emulsions.
The second coating fluid formula: identical with the second coating fluid in embodiment 1.
Embodiment 3
Body paper 10: slurry adopts the mixing slurry of 80% hardwood pulp and 20% CTMP, the grammes per square metre of manufacturing paper with pulp 46gsm.
The first coating fluid formula: adopt 50 parts, calcium carbonate, 50 parts of adhesive.
The second coating fluid formula: identical with the second coating fluid in embodiment 1.
Prepared embodiment 1-3 no carbon paper 100 is printed respectively and print test.
Printing test result: the white point on color lump obviously tails off, print density is improved approximately 3%, and color development deepens.
Printing test result: print to 12000m, pull is still complete, paper powder is piled up less.
In addition, those skilled in the art also can make various amendments, interpolation and the replacement in other form and details in the claims in the present invention scope of disclosure and spirit.Certainly, the variations such as various amendments, interpolation and the replacement that these make according to spirit of the present invention, within all should being included in the present invention's scope required for protection.
Claims (18)
1. a no carbon paper, it comprises body paper and chromonic layer, it is characterized in that: this no carbon paper also comprises precoated shet, and this precoated shet is formed at body paper surface, and the surface that this chromonic layer is formed at this precoated shet is located between original paper layer and chromonic layer precoated shet; In this precoated shet, contain filler, adhesive and wax material, wherein the quality percentage composition of filler is 50%-60%, the quality percentage composition of adhesive is 40%-50%, and the quality percentage composition of wax material is 0%-10%, and the quality percentage composition of this wax material does not comprise 0.
2. no carbon paper as claimed in claim 1, is characterized in that: this filler is calcium carbonate, talcum powder, mineral fibres, mica, titanium dioxide or filler level china clay.
3. no carbon paper as claimed in claim 1, is characterized in that: this adhesive is derivatives of modified glucose adhesive, modified polyvinyl acetate adhesive, modification paper grade (stock) adhesive, cationic starch/vinylacetate mixed adhesive, polyurethane hot melt adhesives or paste polyvinyl acetal composite adhesive.
4. no carbon paper as claimed in claim 1, is characterized in that: this wax material is cation paraffin emulsion.
5. no carbon paper as claimed in claim 1, is characterized in that: the thickness of this precoated shet is 1-2 μ m.
6. no carbon paper as claimed in claim 1, is characterized in that: this chromonic layer contains the pigment that parts by weight are respectively 5-100 part, the starch of 0-20 part, the latex of 0-25 part, developer, the dispersant of 0.1-4 part and the interfacial agent of 0.1-3 part of 5-25 part.
7. no carbon paper as claimed in claim 6, is characterized in that: this pigment is one or more in grinding calcium carbonate, winnofil, china clay, carclazyte, calcining carclazyte, aluminium hydroxide, titanium dioxide, talcum powder; This starch is one or more in potato starch, cornstarch, tapioca and wheaten starch; This latex is one or more in styrene-butadiene latex, carboxylic styrene butadiene latex, carboxyl fourth cyanogen latex and polyacrylic ester latex; This developer is one or more in atlapulgite, zinc salicylate and phenolic resins; This dispersant is one or more in calgon, sodium pyrophosphate, Sodium Polyacrylate and carboxylate; This interfacial agent is one or more in sulfosuccinate, acetylene ethylene glycol.
8. no carbon paper as claimed in claim 1, is characterized in that: the thickness of this chromonic layer is 4-5 μ m.
9. no carbon paper as claimed in claim 1, it is characterized in that: this body paper adopt in hardwood pulp or softwood pulp and CTMP one or both with hardwood pulp mix that starching manufactures paper with pulp makes, and the quality percentage composition of hardwood pulp is 70-100%, the quality percentage composition of softwood pulp is 0-10%, and the quality percentage composition of CTMP is 0-20%.
10. no carbon paper as claimed in claim 1, is characterized in that: the degree of sizing of this body paper be 5sec and more than, COBB value is 15-35g/cm
2, air permeability be 13sec/100cc and more than.
The preparation method of 11. 1 kinds of no carbon paper, it comprises the steps:
Initial body paper is provided;
At this body paper one surface-coated first coating fluid the dry precoated shet that forms, in this first coating fluid, contain filler, adhesive and wax material, wherein in this first coating fluid, the quality percentage composition of filler is 50%-60%, the quality percentage composition of adhesive is 40%-50%, the quality percentage composition of wax material is 0%-10%, and the quality percentage composition of this wax material does not comprise 0;
In this precoated shet surface-coated second coating fluid the dry chromonic layer that forms.
The preparation method of 12. no carbon paper as claimed in claim 11, it is characterized in that: this body paper adopt in hardwood pulp or softwood pulp and CTMP one or both with hardwood pulp mix that starching manufactures paper with pulp makes, and the quality percentage composition of hardwood pulp is 70-100%, the quality percentage composition of softwood pulp is 0-10%, and the quality percentage composition of CTMP is 0-20%.
The preparation method of 13. no carbon paper as claimed in claim 11, is characterized in that: this filler is calcium carbonate, talcum powder, mineral fibres, mica, titanium dioxide or filler level china clay.
The preparation method of 14. no carbon paper as claimed in claim 11, is characterized in that: this adhesive is derivatives of modified glucose adhesive, modified polyvinyl acetate adhesive, modification paper grade (stock) adhesive, cationic starch/vinylacetate mixed adhesive, polyurethane hot melt adhesives or paste polyvinyl acetal composite adhesive.
The preparation method of 15. no carbon paper as claimed in claim 1, is characterized in that: this wax material is cation paraffin emulsion.
The preparation method of 16. no carbon paper as claimed in claim 11, is characterized in that: the solid content of this first coating fluid is 15-25%, and viscosity is 12-16cps, and the coating weight of the first coating fluid is 4-6g/m
2.
The preparation method of 17. no carbon paper as claimed in claim 11, is characterized in that: this second coating fluid contains the pigment that parts by weight are respectively 5-100 part, the starch of 0-20 part, the latex of 0-25 part, developer, the dispersant of 0.1-4 part and the interfacial agent of 0.1-3 part of 5-25 part.
The preparation method of 18. no carbon paper as claimed in claim 17, is characterized in that: this pigment is one or more in grinding calcium carbonate, winnofil, china clay, carclazyte, calcining carclazyte, aluminium hydroxide, titanium dioxide, talcum powder; This starch is one or more in potato starch, cornstarch, tapioca and wheaten starch; This latex is one or more in styrene-butadiene latex, carboxylic styrene butadiene latex, carboxyl fourth cyanogen latex and polyacrylic ester latex; This developer is one or more in atlapulgite, zinc salicylate and phenolic resins; This dispersant is one or more in polyphosphate, Sodium Polyacrylate and the carboxylates such as calgon, sodium pyrophosphate; This interfacial agent is one or more in sulfosuccinate, acetylene ethylene glycol.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210114237.3A CN102619136B (en) | 2012-04-18 | 2012-04-18 | Carbonless copy paper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210114237.3A CN102619136B (en) | 2012-04-18 | 2012-04-18 | Carbonless copy paper |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102619136A CN102619136A (en) | 2012-08-01 |
| CN102619136B true CN102619136B (en) | 2014-06-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210114237.3A Active CN102619136B (en) | 2012-04-18 | 2012-04-18 | Carbonless copy paper |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103046433A (en) * | 2012-12-19 | 2013-04-17 | 青岛海洋新材料科技有限公司 | Carbonless copying paper |
| CN103103863A (en) * | 2012-12-31 | 2013-05-15 | 镇江大东纸业有限公司 | Method for producing dry type duplicating body paper |
| CN107366183A (en) * | 2017-06-28 | 2017-11-21 | 吕超 | A kind of preparation method of the carbon paper containing cationic starch coating modification barium sulfate |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1016432B (en) * | 1986-11-05 | 1992-04-29 | 三井东压化学株式会社 | The preparation method of salicylic acid copolymers and its metal-salt |
| CN1038239C (en) * | 1994-10-27 | 1998-05-06 | 范公桥 | Dry carbon paper and productive method |
| CN102230304B (en) * | 2010-09-27 | 2015-02-04 | 宁波鸿运纸业有限公司 | Preparation method for dry-type carbon paper |
| CN102230300B (en) * | 2011-04-22 | 2013-11-20 | 金华盛纸业（苏州工业园区）有限公司 | Digital carbonless copy paper |
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| CN102619136A (en) | 2012-08-01 |
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Effective date of registration: 20220630 Address after: 212132, No. 8 Tung Hing East Road, Dagang, Jiangsu, Zhenjiang Patentee after: Goldeast Paper (Jiangsu) Co.,Ltd. Address before: 215126 No.2 Jinsheng Road, Shengpu Town, Suzhou Industrial Park, Suzhou City, Jiangsu Province Patentee before: GOLD HUASHENG PAPER (SUZHOU INDUSTRIAL PARK) Co.,Ltd. |
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