CN110700008A - Varnish for sheet-type paper for digital printing machine and preparation process and application method thereof - Google Patents
Varnish for sheet-type paper for digital printing machine and preparation process and application method thereof Download PDFInfo
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- CN110700008A CN110700008A CN201910866946.9A CN201910866946A CN110700008A CN 110700008 A CN110700008 A CN 110700008A CN 201910866946 A CN201910866946 A CN 201910866946A CN 110700008 A CN110700008 A CN 110700008A
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- China
- Prior art keywords
- varnish
- sheet
- paper
- digital printing
- printing machine
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
- D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
- B41M5/50—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording
- B41M5/52—Macromolecular coatings
- B41M5/5227—Macromolecular coatings characterised by organic non-macromolecular additives, e.g. UV-absorbers, plasticisers, surfactants
-
- 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
- D21H17/03—Non-macromolecular organic compounds
- D21H17/05—Non-macromolecular organic compounds containing elements other than carbon and hydrogen only
- D21H17/07—Nitrogen-containing compounds
-
- 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
- D21H17/03—Non-macromolecular organic compounds
- D21H17/05—Non-macromolecular organic compounds containing elements other than carbon and hydrogen only
- D21H17/14—Carboxylic acids; Derivatives thereof
-
- 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
- D21H17/64—Alkaline compounds
-
- 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
- D21H19/10—Coatings without pigments
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Paper (AREA)
- Paints Or Removers (AREA)
Abstract
The invention relates to the technical field of digital printing, in particular to varnish for sheet paper for a digital printing machine, and a preparation process and an application method thereof. The varnish for the sheet type paper for the digital printer comprises water-based acrylic acid, water, ethanol and ammonia water. Wherein the main component of the varnish is water, the appearance is milk white, and the pH value is 8.0-10.0. The varnish is coated on the surface of paper, so that the subsequent printing can be directly and digitally printed, the consumption is little, no drying element is contained, the production cost is low, and the varnish has the advantages of color retention, no yellowing, good printing performance, no roller sticking and good environmental protection. The preparation process of the varnish for the sheet paper for the digital printing machine has the characteristics of simple process, low production cost and suitability for large-scale production. The application method of the varnish for the sheet paper for the digital printing machine has the characteristics of convenience and quickness in use, simplicity in application and suitability for large-scale production.
Description
Technical Field
The invention relates to the technical field of digital printing, in particular to varnish for sheet paper for a digital printing machine, and a preparation process and an application method thereof.
Background
Digital printing is a new industry, and a digital printing system is a technology of digitalization and networking in the whole printing process, covers the technologies of computer direct plate making, digital work flow, digital proofing, on-demand and quick printing and the like, and is necessary for adapting to the development of the information era in the printing industry. The digital printing has the characteristics of high requirement, small batch, quick change, capability of meeting the demand of publishing and the like. The main market orientation: book printing, newspaper and magazine printing, business transaction printing, anti-counterfeit printing, and the like.
Regarding laser anti-counterfeit printing, the current laser paper is mainly divided into two types: (1) laser composite paper; (2) laser transfer paper. However, the laser coating on the surface of the two kinds of paper is difficult to directly print in a digital mode, so that a supporting body is needed between the digital ink and the laser coating to play a role in starting and stopping, and the digital ink and the laser coating are combined to achieve the traditional laser printing effect.
With the promotion of market development and consumer concept, the laser effect of common digital printing is difficult to meet the requirements of high-end products, and the development of the multifunctional laser digital process is greatly superior to that of common digital printing in the aspects of stereoscopic impression and metal texture. Laser digital printing is also becoming widely used in label and packaging industries as a new anti-counterfeit technology.
In the prior art, styrene-butadiene latex is used as a bearing body between digital ink and a laser coating, but the styrene-butadiene latex contains drying pigment, so the cost is higher, the styrene-butadiene latex is easy to yellow, the printing performance is not good enough, and roll sticking is easy.
Disclosure of Invention
The present invention provides a varnish for sheet-type paper for digital printing machine, which is used as a carrier between digital ink and laser coating, and has the advantages of color retention, no yellowing, good printing performance, no roller sticking, and low production cost.
The second purpose of the invention is to provide a preparation process of the varnish for the sheet-type paper for the digital printing machine, aiming at the defects of the prior art.
The invention also aims to provide an application method of the varnish for the sheet-type paper for the digital printing machine, aiming at the defects of the prior art.
In order to achieve one of the purposes, the invention adopts the following technical scheme:
the varnish for the sheet paper for the digital printing machine comprises the following components in percentage by weight:
preferably, the varnish for the sheet paper for the digital printing machine comprises the following components in percentage by weight:
more preferably, the varnish for the sheet paper for the digital printing machine comprises the following components in percentage by weight:
in order to achieve the second purpose, the invention adopts the following technical scheme:
the preparation process of varnish for sheet paper for digital printer includes the following steps:
step one, preparing a first mixture: adding the water-based acrylic acid and the ethanol with the formula amount into the water with the formula amount, and stirring for a certain time to prepare a first mixture;
step two, preparing a finished product: and (3) adding ammonia water with the formula amount into the first mixture prepared in the step one, and stirring for a certain time to obtain the varnish for the sheet paper of the digital printing machine.
In the above technical scheme, in the first step, the stirring time is 5min to 10 min.
In the above technical scheme, in the second step, the stirring time is 3min to 8 min.
In order to achieve the third purpose, the invention adopts the following technical scheme:
an application method of varnish for a sheet type paper for a digital printing machine is provided, which comprises the following steps: coating glue on the laser film, then adhering the laser film on paper, baking the laser film by an oven, and then stripping the PET film; stirring the varnish for the sheet-type paper for the digital printing machine for 8-12 min, then coating by using a steel roller, then cutting the paper, and then performing digital printing of laser coating.
In the technical scheme, the wet coating amount of the varnish for the sheet type paper for the digital printing machine is 0.5g/m2～2g/m2。
In the technical scheme, the mesh number of the steel roller is 350-450 meshes.
Compared with the prior art, the invention has the beneficial effects that:
(1) the invention provides varnish for sheet paper for a digital printer, which comprises water-based acrylic acid, water, ethanol and ammonia water. Wherein the main component of the varnish is water, the appearance is milk white, and the pH value is 8.0-10.0. The varnish is coated on the surface of paper, so that the subsequent printing can be directly and digitally printed, the consumption is little, no drying element is contained, the production cost is low, and the varnish has the advantages of color retention, no yellowing, good printing performance, no roller sticking and good environmental protection.
(2) The preparation process of the varnish for the sheet paper for the digital printing machine has the characteristics of simple process, low production cost and suitability for large-scale production.
(3) The application method of the varnish for the sheet paper for the digital printing machine has the characteristics of convenience and quickness in use, simplicity in application and suitability for large-scale production.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects solved by the present invention more apparent, the present invention is further described in detail below with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example 1.
A varnish for a sheet type paper for a digital printer comprises the following components in percentage by weight:
the preparation process of the varnish for the sheet type paper for the digital printing machine comprises the following steps:
step one, preparing a first mixture: adding the water-based acrylic acid and the ethanol with the formula amount into the water with the formula amount, and stirring for 8min to prepare a first mixture;
step two, preparing a finished product: and (3) adding ammonia water with the formula amount into the first mixture prepared in the step one, and stirring for 5min to obtain the varnish for the sheet paper of the digital printing machine.
The application method of the varnish for the sheet type paper for the digital printing machine comprises the following steps: coating glue on the laser film, then adhering the laser film on paper, baking the laser film by an oven, and then stripping the PET film; stirring the varnish for the sheet paper for the digital printing machine for 10min, then coating by using a steel roller, then cutting the sheet, and then carrying out digital printing of the laser coating.
Wherein the wet coating amount of the varnish for the sheet paper for the digital printing machine is 1g/m2。
In this example, the mesh number of the steel roll was 400 mesh.
Example 2.
A varnish for a sheet type paper for a digital printer comprises the following components in percentage by weight:
the preparation process of the varnish for the sheet type paper for the digital printing machine comprises the following steps:
step one, preparing a first mixture: adding the water-based acrylic acid and the ethanol with the formula amount into the water with the formula amount, and stirring for 5min to prepare a first mixture;
step two, preparing a finished product: and (3) adding ammonia water with the formula amount into the first mixture prepared in the step one, and stirring for 3min to obtain the varnish for the sheet paper of the digital printing machine.
The application method of the varnish for the sheet type paper for the digital printing machine comprises the following steps: coating glue on the laser film, then adhering the laser film on paper, baking the laser film by an oven, and then stripping the PET film; stirring the varnish for the sheet-type paper for the digital printing machine for 8min, then coating by using a steel roller, then cutting the paper, and then performing digital printing of the laser coating.
Wherein the wet coating amount of the varnish for the sheet type paper for the digital printing machine is 0.5g/m2。
In this example, the mesh number of the steel roll was 350 mesh.
Example 3.
A varnish for a sheet type paper for a digital printer comprises the following components in percentage by weight:
the preparation process of the varnish for the sheet type paper for the digital printing machine comprises the following steps:
step one, preparing a first mixture: adding the water-based acrylic acid and the ethanol with the formula amount into the water with the formula amount, and stirring for 10min to prepare a first mixture;
step two, preparing a finished product: and (3) adding ammonia water with the formula amount into the first mixture prepared in the step one, and stirring for 8min to obtain the varnish for the sheet paper of the digital printing machine.
The application method of the varnish for the sheet type paper for the digital printing machine comprises the following steps: coating glue on the laser film, then adhering the laser film on paper, baking the laser film by an oven, and then stripping the PET film; stirring the varnish for the sheet paper for the digital printing machine for 12min, then coating by using a steel roller, then cutting the sheet, and then performing digital printing of the laser coating.
Wherein the wet coating amount of the varnish for the sheet type paper for the digital printing machine is 2g/m2。
In this example, the mesh number of the steel roll was 450 mesh.
Example 4.
A varnish for a sheet type paper for a digital printer comprises the following components in percentage by weight:
the preparation process of the varnish for the sheet type paper for the digital printing machine comprises the following steps:
step one, preparing a first mixture: adding the water-based acrylic acid and the ethanol with the formula amount into the water with the formula amount, and stirring for 8min to prepare a first mixture;
step two, preparing a finished product: and (3) adding ammonia water with the formula amount into the first mixture prepared in the step one, and stirring for 4min to obtain the varnish for the sheet paper of the digital printing machine.
The application method of the varnish for the sheet type paper for the digital printing machine comprises the following steps: coating glue on the laser film, then adhering the laser film on paper, baking the laser film by an oven, and then stripping the PET film; stirring the varnish for the sheet-type paper for the digital printing machine for 9min, then coating by using a steel roller, then cutting the paper, and then performing digital printing of the laser coating.
Wherein the wet coating amount of the varnish for the sheet type paper for the digital printing machine is 0.8g/m2。
In this example, the mesh number of the steel roll was 380 mesh.
Example 5.
A varnish for a sheet type paper for a digital printer comprises the following components in percentage by weight:
the preparation process of the varnish for the sheet type paper for the digital printing machine comprises the following steps:
step one, preparing a first mixture: adding the water-based acrylic acid and the ethanol with the formula amount into the water with the formula amount, and stirring for 9min to prepare a first mixture;
step two, preparing a finished product: and (3) adding ammonia water with the formula amount into the first mixture prepared in the step one, and stirring for 7min to obtain the varnish for the sheet paper of the digital printing machine.
The application method of the varnish for the sheet type paper for the digital printing machine comprises the following steps: coating glue on the laser film, then adhering the laser film on paper, baking the laser film by an oven, and then stripping the PET film; the digital printing machine is used for stirring varnish for sheet paper for 11min, then coating the varnish by using a steel roller, then cutting the varnish, and then performing digital printing of laser coating.
Wherein the wet coating amount of the varnish for the sheet type paper for the digital printing machine is 1.5g/m2。
In this example, the mesh number of the steel roll was 420 meshes.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the protection scope of the present invention, although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.
Claims (9)
1. A varnish for sheet paper for a digital printer is characterized in that: comprises the following components in percentage by weight:
2. a varnish for sheet paper for a digital printer according to claim 1, wherein: comprises the following components in percentage by weight:
3. a varnish for sheet paper for a digital printer according to claim 1, wherein: comprises the following components in percentage by weight:
4. a process for preparing a varnish for sheet-type paper for digital printers as claimed in any one of claims 1 to 3, wherein: it comprises the following steps:
step one, preparing a first mixture: adding the water-based acrylic acid and the ethanol with the formula amount into the water with the formula amount, and stirring for a certain time to prepare a first mixture;
step two, preparing a finished product: and (3) adding ammonia water with the formula amount into the first mixture prepared in the step one, and stirring for a certain time to obtain the varnish for the sheet paper of the digital printing machine.
5. The process for preparing a varnish for sheet-type paper for digital printing machine according to claim 4, wherein: in the first step, the stirring time is 5min to 10 min.
6. The process for preparing a varnish for sheet-type paper for digital printing machine according to claim 4, wherein: in the second step, the stirring time is 3-8 min.
7. A method of applying varnish for sheet-type paper for digital printers as recited in any of claims 1 to 3, wherein: it comprises the following steps: coating glue on the laser film, then adhering the laser film on paper, baking the laser film by an oven, and then stripping the PET film; stirring the varnish for the sheet-type paper for the digital printing machine for 8-12 min, then coating by using a steel roller, then cutting the paper, and then performing digital printing of laser coating.
8. The process for preparing a varnish for sheet-type paper for digital printing machine according to claim 7, wherein: the wet coating amount of the varnish for the sheet type paper for the digital printing machine is 0.5g/m2～2g/m2。
9. The process for preparing a varnish for sheet-type paper for digital printing machine according to claim 7, wherein: the mesh number of the steel roller is 350-450 meshes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910866946.9A CN110700008A (en) | 2019-09-12 | 2019-09-12 | Varnish for sheet-type paper for digital printing machine and preparation process and application method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910866946.9A CN110700008A (en) | 2019-09-12 | 2019-09-12 | Varnish for sheet-type paper for digital printing machine and preparation process and application method thereof |
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| CN110700008A true CN110700008A (en) | 2020-01-17 |
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| CN201910866946.9A Pending CN110700008A (en) | 2019-09-12 | 2019-09-12 | Varnish for sheet-type paper for digital printing machine and preparation process and application method thereof |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101407654A (en) * | 2008-11-14 | 2009-04-15 | 上海维凯化学品有限公司 | High peeling environment-friendly type aqueous transfer coating and use thereof |
| CN101407656A (en) * | 2008-11-14 | 2009-04-15 | 上海维凯化学品有限公司 | Environment-friendly type moldable aqueous transfer coating, preparation and use thereof |
| CN110093808A (en) * | 2019-04-22 | 2019-08-06 | 河南千卡绘纸制品有限公司 | A kind of digital printing water-based paper coating material and preparation method thereof |
| CN110204966A (en) * | 2019-07-12 | 2019-09-06 | 广州速马实业有限公司 | A kind of environment-friendly water-based coating fluid and preparation method thereof enhancing digital printing ink adhesion |
-
2019
- 2019-09-12 CN CN201910866946.9A patent/CN110700008A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101407654A (en) * | 2008-11-14 | 2009-04-15 | 上海维凯化学品有限公司 | High peeling environment-friendly type aqueous transfer coating and use thereof |
| CN101407656A (en) * | 2008-11-14 | 2009-04-15 | 上海维凯化学品有限公司 | Environment-friendly type moldable aqueous transfer coating, preparation and use thereof |
| CN110093808A (en) * | 2019-04-22 | 2019-08-06 | 河南千卡绘纸制品有限公司 | A kind of digital printing water-based paper coating material and preparation method thereof |
| CN110204966A (en) * | 2019-07-12 | 2019-09-06 | 广州速马实业有限公司 | A kind of environment-friendly water-based coating fluid and preparation method thereof enhancing digital printing ink adhesion |
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Application publication date: 20200117 |