CN111635671A - Method for repairing decolored powder falling and scratches on surface of printed matter - Google Patents
Method for repairing decolored powder falling and scratches on surface of printed matter Download PDFInfo
- Publication number
- CN111635671A CN111635671A CN202010517678.2A CN202010517678A CN111635671A CN 111635671 A CN111635671 A CN 111635671A CN 202010517678 A CN202010517678 A CN 202010517678A CN 111635671 A CN111635671 A CN 111635671A
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- Prior art keywords
- printed matter
- powder
- repairing
- agent
- decolored
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- 239000000843 powder Substances 0.000 title claims abstract description 52
- 238000000034 method Methods 0.000 title claims abstract description 25
- 238000007639 printing Methods 0.000 claims abstract description 28
- 239000011248 coating agent Substances 0.000 claims abstract description 23
- 238000000576 coating method Methods 0.000 claims abstract description 23
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 17
- 239000012756 surface treatment agent Substances 0.000 claims abstract description 16
- 230000002950 deficient Effects 0.000 claims abstract description 15
- 230000000694 effects Effects 0.000 claims abstract description 6
- 238000002360 preparation method Methods 0.000 claims abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 26
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 21
- 229920001220 nitrocellulos Polymers 0.000 claims description 20
- 238000001035 drying Methods 0.000 claims description 16
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 16
- 239000010931 gold Substances 0.000 claims description 16
- 229910052737 gold Inorganic materials 0.000 claims description 16
- 239000000463 material Substances 0.000 claims description 16
- 238000004140 cleaning Methods 0.000 claims description 15
- 239000002274 desiccant Substances 0.000 claims description 14
- 239000007788 liquid Substances 0.000 claims description 13
- 239000002518 antifoaming agent Substances 0.000 claims description 11
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 9
- 238000003756 stirring Methods 0.000 claims description 8
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims description 6
- 239000006185 dispersion Substances 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 4
- 239000002994 raw material Substances 0.000 claims description 4
- 238000005303 weighing Methods 0.000 claims description 4
- 239000002202 Polyethylene glycol Substances 0.000 claims description 3
- 238000007664 blowing Methods 0.000 claims description 3
- 238000003486 chemical etching Methods 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- 238000005520 cutting process Methods 0.000 claims description 3
- 238000005485 electric heating Methods 0.000 claims description 3
- 125000004494 ethyl ester group Chemical group 0.000 claims description 3
- 239000012535 impurity Substances 0.000 claims description 3
- 229920001223 polyethylene glycol Polymers 0.000 claims description 3
- -1 polytetrafluoroethylene Polymers 0.000 claims description 3
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 3
- 238000007763 reverse roll coating Methods 0.000 claims description 3
- DCKVNWZUADLDEH-UHFFFAOYSA-N sec-butyl acetate Chemical compound CCC(C)OC(C)=O DCKVNWZUADLDEH-UHFFFAOYSA-N 0.000 claims description 3
- 238000001179 sorption measurement Methods 0.000 claims description 3
- 239000002904 solvent Substances 0.000 claims description 2
- 239000001993 wax Substances 0.000 claims 4
- 239000000020 Nitrocellulose Substances 0.000 claims 1
- 239000004200 microcrystalline wax Substances 0.000 claims 1
- 230000007547 defect Effects 0.000 abstract description 10
- 239000000126 substance Substances 0.000 abstract description 5
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 238000005562 fading Methods 0.000 abstract description 3
- 235000019504 cigarettes Nutrition 0.000 description 5
- 238000004806 packaging method and process Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000005022 packaging material Substances 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 238000004381 surface treatment Methods 0.000 description 2
- 230000000699 topical effect Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003085 diluting agent Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000007646 gravure printing Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D101/00—Coating compositions based on cellulose, modified cellulose, or cellulose derivatives
- C09D101/08—Cellulose derivatives
- C09D101/16—Esters of inorganic acids
- C09D101/18—Cellulose nitrate
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F23/00—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing
- B41F23/08—Print finishing devices, e.g. for glossing prints
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/63—Additives non-macromolecular organic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/65—Additives macromolecular
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
Abstract
The invention provides a method and a process for timely repairing the defect of fading and powder falling of a printed matter caused by chemical factors, which relate to the technical field of printing and comprise the steps of pretreatment of the defective printed matter, preparation of a surface treating agent, application of the surface treating agent and the like, the invention can realize surface repair of the defective product by utilizing the existing surface coating equipment without additional equipment investment, has good repairing effect on the defects of fading and powder falling of the printed matter caused by chemical and environmental factors and the like, can effectively reduce the rejection rate of the defective printed matter and reduce the economic loss of a printing enterprise; the surface treatment agent has high adhesion fastness, high glossiness and good flexibility, and can properly reduce the use amount and improve the curing speed and the adhesion force of the surface treatment agent on the surface of a printed matter.
Description
Technical Field
The invention relates to the technical field of printing, in particular to a method for repairing decolored powder falling and scratches on the surface of a printed matter.
Background
In a colloquial way, the quality of a printed matter is divided into three parts by printing and seven parts by plate making, intaglio printing is taken as one of printing processes, and the printed matter has the advantages of thick ink layer, bright color, high saturation, high printing plate printing resistance, stable quality of the printed matter, high printing speed and the like and occupies an extremely important position in the fields of printing packaging and image-text publishing; from the application aspect, gravure printing is mainly used for fine publications such as magazines and product catalogues, packaging printing and printing of securities such as bank notes and stamps, and is also applied to special fields such as decorative materials.
In the gravure process, people often see that the color of some printed matter layouts is lighter, even the color and the powder are seriously faded, the product quality is directly influenced, and the influence factors are mainly two aspects:
the first is that the printing plate is worn, the pictures and texts on the printing plate surface are worn, the opening of the inking hole becomes small, the depth becomes shallow, the area of the ink transfer unit is reduced, the total ink transfer amount is correspondingly reduced, the ink color becomes light, and the defects are caused; the main factors of plate wear include: printing plate surface friction, doctor blade pressure is too big, the linear velocity of printing plate roller and impression roller, the wearing and tearing of paper and printing ink to the printing plate etc. the defect that above-mentioned reason caused is often comparatively obvious, can discover rapidly in normal production process, and through seeking corresponding reason and in time make corresponding adjustment, its solution that corresponds reduces printing plate pressure and doctor blade pressure usually, eliminate the large granule in the printing ink and control printing ink's drying rate simultaneously, consequently can not cause the defect of batch product basically, can not cause big economic loss.
However, the second is related to more causes, and more causes are caused by chemical factors. The abrasion resistance is reduced or drying is incomplete during packaging due to improper control of the viscosity of the ink in the printing process, and the ink adhesion on the surface of a printed matter is reduced due to improper control of some external environmental factors. The consequences caused by the factors cannot be shown in time in the production process, the exposure of the defects has the characteristic of delay, so that the defects cannot be adjusted in time in the production process, and the defects can be shown only after the production of the product is finished and in the subsequent processing procedures, so that great economic loss is often caused. For example, in 2013, a certain known packaging material company provides a cigarette carton for a cigarette enterprise, serious powder loss occurs in the process of packaging cigarettes, so that the cigarette carton is shut down, the value of the cigarette carton in the batch is more than 200 million of renminbi, so that serious economic loss is caused to the packaging material company, and the loss is compensated by various repairing means within a specified time, but the good effect cannot be achieved.
Disclosure of Invention
In order to solve the problems described in the prior art, the invention provides a method and a process for timely repairing the defect of fading and powder falling of printed matters caused by chemical factors, and the defective printed matters are quickly repaired, so that the requirements of subsequent packaging procedures can be met, and the economic loss of manufacturers is reduced.
In order to achieve the purpose, the invention adopts the following technical scheme:
a method for repairing decolored powder falling and scratches on the surface of a printed matter is characterized by comprising the following steps:
firstly, pretreatment of defective printed matter
Firstly, cleaning powder;
secondly, water is supplemented;
secondly, preparation of surface treating agent
The material comprises the following components in parts by weight:
nitrocotton liquid: 30-45 parts of a solvent;
wax powder: 0.2-0.5 part;
alcohol: 50-65 parts;
0.1-0.5 part of ultra-slow drying agent;
0.01-0.05 part of water-based defoaming agent;
the nitrocotton liquid can increase the hardness of a surface film of the surface treatment agent after the surface treatment agent is dried;
the wax powder can improve the smoothness of a surface film of the surface treating agent after being dried;
the ultra-slow drying agent adjusts the drying speed of the surface treating agent;
alcohol is a diluent and controls the viscosity of the surface treatment agent;
the defoaming agent is used for eliminating bubbles in the surface treatment agent;
preparing according to the following steps:
a. weighing the raw materials according to the proportion;
b. mixing and stirring: putting the nitrocotton weighed in the step into a container, adding half of alcohol, all the ultra-slow drying agent and the water-based defoaming agent, and stirring for dissolving;
c. transferring the uniformly mixed material in the step b into a high-speed dispersion machine, adding wax powder, dispersing at a high speed for 15-25 minutes, finally adding the residual alcohol to adjust the viscosity, and dispersing at a high speed for 3-8 minutes until the material is uniformly dispersed;
d. detecting fineness and viscosity, wherein the fineness is required to be 5-10 μm, and the viscosity is required to be 20s (measured by coating 4 cups at 25 ℃);
third, application of surface treatment agent
Firstly, removing impurities on the surface of a strip box to be coated by means of air draft, electrostatic adsorption and the like, and ensuring the coating effect;
secondly, placing the surface treating agent in a material groove, and coating the coating surface of the strip box by adopting a bottom feeding reverse roll coating mode;
thirdly, drying the barrel through electric heating or infrared rays, wherein the drying temperature is 80-100 ℃;
fourthly, cooling the barrel through a blowing system, and finally standing for 12 to 24 hours at room temperature to be collected and packaged.
Because the gold stamping layer is arranged at the local position of the surface of the barrel, and the gold stamping layer does not have the phenomena of powder falling and decoloration, the gold stamping layer can be not coated with the surface treatment agent, and if full-plate coating is carried out, the gold stamping layer can drop because the drying speed of the gold stamping layer is slower than that of a common ink layer, so that the front surface of the barrel is preferably coated with the local surface treatment agent.
Application of a topical surface treatment comprising the steps of:
carrying out light, chemical etching or die cutting on the applying roller according to the condition of the gold stamping position and the common ink position on the front surface of the strip box, removing 1/3-1/2 of an area corresponding to the gold stamping position on the front surface of the strip box, and not processing the common ink area;
secondly, coating the surface treating agent by matching with a flattening roller after the treated coating roller is normally installed, and carrying out the same subsequent treatment.
Preferably, the powder cleaning operation comprises the following specific steps: and (3) adopting surface powder cleaning equipment, introducing clean water into a water tank of the powder cleaning equipment, rinsing the defective product with the printing surface facing downwards once, and drying the rinsed product to a state before treatment.
Preferably, the water replenishing operation includes the specific steps of: the carton was fed from water and then press dried using two rubber rolls.
Preferably, the mass percent of the nitrocotton liquid is 25-35%, and the nitrocotton liquid consists of 1/8 nitrocotton, ethyl ester, butyl ester and isopropanol; the slow drying agent comprises binary small molecular alcohol, ternary small molecular alcohol, polyethylene glycol and glycerol; the wax powder is polytetrafluoroethylene modified PP micro powder wax.
Preferably, the surface treating agent comprises, by weight, 39.74 parts of nitrocotton liquid, 0.21 part of wax powder, 0.4 part of ultra-slow drying agent, 59.62 parts of alcohol and 0.03 part of aqueous defoaming agent.
The invention has the following beneficial effects:
the method can realize surface repair of defective products by utilizing the existing surface coating equipment without additional equipment investment, has good repair effect on defects of decoloration, powder falling and the like of printed products caused by chemical and environmental factors, can effectively reduce the rejection rate of defective printed products, and reduces the economic loss of printing enterprises.
The surface treating agent has high adhesion fastness, high glossiness and good flexibility, can properly reduce the using amount on one hand, and simultaneously improves the curing speed and the adhesion force of the surface treating agent on the surface of a printed matter.
Detailed Description
Example 1
A method for repairing decolored powder falling and scratches on the surface of a printed matter comprises the following steps:
firstly, pretreatment of defective printed matter
Firstly, adopting surface powder cleaning equipment, introducing clean water into a water tank of the powder cleaning equipment, rinsing the printing surface of a defective product once, and drying the rinsed product to a state before treatment;
feeding paper from the carton in water, and then pressing the carton dry by adopting two rubber rollers;
secondly, preparation of surface treating agent
The material comprises the following components in parts by weight:
nitrocotton liquid: 35 parts of (B);
wax powder: 0.3 part;
alcohol: 60 parts;
0.3 part of extra slow drying agent;
0.02 part of water-based defoaming agent;
the mass percentage of the nitrocotton liquid is 25-35%, and the nitrocotton liquid consists of 1/8 nitrocotton, ethyl ester, butyl ester and isopropanol; the slow drying agent comprises binary small molecular alcohol, ternary small molecular alcohol, polyethylene glycol and glycerol; the wax powder is polytetrafluoroethylene modified PP micro powder wax.
Preparing according to the following steps:
a. weighing the raw materials according to the proportion;
b. mixing and stirring: putting the nitrocotton weighed in the step into a container, adding 30 parts of alcohol, all the ultra-slow drying agent and the water-based defoaming agent, and stirring for dissolving;
c. transferring the uniformly mixed material in the step b into a high-speed dispersion machine, adding wax powder, dispersing at a high speed for 15-25 minutes, finally adding the residual alcohol to adjust the viscosity, and dispersing at a high speed for 3-8 minutes until the material is uniformly dispersed;
d. detecting fineness and viscosity, wherein the fineness is required to be 5-10 μm, and the viscosity is required to be 20s (measured by coating 4 cups at 25 ℃);
third, application of surface treatment agent
Firstly, removing impurities on the surface of a strip box to be coated by means of air draft, electrostatic adsorption and the like, and ensuring the coating effect;
secondly, placing the surface treating agent in a material groove, and coating the coating surface of the strip box by adopting a bottom feeding reverse roll coating mode;
thirdly, drying the barrel through electric heating or infrared rays, wherein the drying temperature is 80-100 ℃;
fourthly, cooling the barrel through a blowing system, and finally standing for 12 to 24 hours at room temperature to be collected and packaged.
Example 2
A method for repairing decolored powder falling and scratches on the surface of a printed matter comprises the following steps:
firstly, pretreatment of defective printed matter
Firstly, adopting surface powder cleaning equipment, introducing clean water into a water tank of the powder cleaning equipment, rinsing the printing surface of a defective product once, and drying the rinsed product to a state before treatment;
feeding paper from the carton in water, and then pressing the carton dry by adopting two rubber rollers;
secondly, preparation of surface treating agent
The material comprises the following components in parts by weight:
nitrocotton liquid: 39.74 parts;
wax powder: 0.21 part;
alcohol: 59.62 parts;
0.4 part of extra slow drying agent;
0.03 part of water-based defoaming agent;
preparing according to the following steps:
a. weighing the raw materials according to the proportion;
b. mixing and stirring: putting the nitrocotton weighed in the step into a container, adding 30 parts of alcohol, all the ultra-slow drying agent and the water-based defoaming agent, and stirring for dissolving;
c. transferring the uniformly mixed material in the step b into a high-speed dispersion machine, adding wax powder, dispersing at a high speed for 15-25 minutes, finally adding the residual alcohol to adjust the viscosity, and dispersing at a high speed for 3-8 minutes until the material is uniformly dispersed;
d. detecting fineness and viscosity, wherein the fineness is required to be 5-10 μm, and the viscosity is required to be 20s (measured by coating 4 cups at 25 ℃);
third, application of surface treatment agent
Because the gold stamping layer is arranged at the local position of the surface of the barrel, and the gold stamping layer does not have the phenomena of powder falling and decoloration, the gold stamping layer can not be coated with the surface treatment agent, if full-plate coating is carried out, the gold stamping layer can drop because the drying speed of the gold stamping layer is slower than that of a common ink layer, and therefore, the front surface of the barrel is coated with the local surface treatment agent.
Application of a topical surface treatment comprising the steps of:
carrying out light, chemical etching or die cutting on the applying roller according to the condition of the gold stamping position and the common ink position on the front surface of the strip box, removing 1/3-1/2 of an area corresponding to the gold stamping position on the front surface of the strip box, and not processing the common ink area;
secondly, coating the surface treating agent by matching with a flattening roller after the treated coating roller is normally installed, and carrying out the same subsequent treatment.
Preferably, the powder cleaning operation comprises the following specific steps: and (3) adopting surface powder cleaning equipment, introducing clean water into a water tank of the powder cleaning equipment, rinsing the defective product with the printing surface facing downwards once, and drying the rinsed product to a state before treatment.
Claims (8)
1. A method for repairing decolored powder falling and scratches on the surface of a printed matter is characterized by comprising the following steps:
firstly, pretreatment of defective printed matter
Firstly, cleaning powder;
secondly, water is supplemented;
secondly, preparation of surface treating agent
The material comprises the following components in parts by weight:
nitrocotton liquid: 30-45 parts of a solvent;
wax powder: 0.2-0.5 part;
alcohol: 50-65 parts;
0.1-0.5 part of ultra-slow drying agent;
0.01-0.05 part of water-based defoaming agent;
preparing according to the following steps:
a. weighing the raw materials according to the proportion;
b. mixing and stirring: putting the nitrocotton weighed in the step into a container, adding half of alcohol, all the ultra-slow drying agent and the water-based defoaming agent, and stirring for dissolving;
c. transferring the uniformly mixed material in the step b into a high-speed dispersion machine, adding wax powder, dispersing at a high speed for 15-25 minutes, finally adding the residual alcohol to adjust the viscosity, and dispersing at a high speed for 3-8 minutes until the material is uniformly dispersed;
d. detecting fineness and viscosity, wherein the fineness is required to be 5-10 μm, and the viscosity is required to be 20s (measured by coating 4 cups at 25 ℃);
third, application of surface treatment agent
Firstly, removing impurities on the surface of a strip box to be coated by means of air draft, electrostatic adsorption and the like, and ensuring the coating effect;
secondly, placing the surface treating agent in a material groove, and coating the coating surface of the strip box by adopting a bottom feeding reverse roll coating mode;
thirdly, drying the barrel through electric heating or infrared rays, wherein the drying temperature is 80-100 ℃;
fourthly, cooling the barrel through a blowing system, and finally standing for 12 to 24 hours at room temperature to be collected and packaged.
2. The method for repairing decolored powder fall and scratches on the surface of a printed matter according to claim 1, wherein the step three is to apply a local surface treatment agent on the front surface of the barrel, and comprises the following steps:
carrying out light, chemical etching or die cutting on the applying roller according to the condition of the gold stamping position and the common ink position on the front surface of the strip box, removing 1/3-1/2 of an area corresponding to the gold stamping position on the front surface of the strip box, and not processing the common ink area;
secondly, coating the surface treating agent by matching with a flattening roller after the treated coating roller is normally installed, and carrying out the same subsequent treatment.
3. The method for repairing decolored powder fall and scratches on the surface of a printed matter according to claim 1, wherein the powder cleaning operation comprises the following specific steps: and (3) adopting surface powder cleaning equipment, introducing clean water into a water tank of the powder cleaning equipment, rinsing the defective product with the printing surface facing downwards once, and drying the rinsed product to a state before treatment.
4. The method for repairing decolored and dusted surfaces and scratches of printed matters according to claim 1, wherein the water replenishing operation comprises the following specific steps: the carton was fed from water and then press dried using two rubber rolls.
5. The method for repairing decolored powder fall and scratches on the surface of a printed matter according to claim 1, wherein the mass percent of the nitrocotton liquid is 25-35%, and the nitrocotton liquid consists of 1/8 nitrocotton, ethyl ester, butyl ester and isopropanol.
6. The method for repairing decolored powder fall and scratches on the surface of a printed matter according to claim 1, wherein the ultra-slow drying agent comprises a binary small molecular alcohol, a ternary small molecular alcohol, polyethylene glycol and glycerol.
7. The method for repairing decolored powder fall and scratches on the surface of a printed matter according to claim 1, wherein the wax powder is polytetrafluoroethylene modified PP micro wax.
8. The method for repairing decolored powder fall and scratches on the surface of a printed matter according to claim 1, wherein the surface treatment agent comprises, by weight, 39.74 parts of nitrocellulose liquid, 0.21 part of wax powder, 0.4 part of ultra-slow drying agent, 59.62 parts of alcohol, and 0.03 part of aqueous defoaming agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010517678.2A CN111635671B (en) | 2020-06-09 | 2020-06-09 | Restoration method for decoloring, powder-removing and scratch of surface of printed matter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010517678.2A CN111635671B (en) | 2020-06-09 | 2020-06-09 | Restoration method for decoloring, powder-removing and scratch of surface of printed matter |
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| Publication Number | Publication Date |
|---|---|
| CN111635671A true CN111635671A (en) | 2020-09-08 |
| CN111635671B CN111635671B (en) | 2024-02-27 |
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| CN202010517678.2A Active CN111635671B (en) | 2020-06-09 | 2020-06-09 | Restoration method for decoloring, powder-removing and scratch of surface of printed matter |
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|---|---|---|---|---|
| GB1232971A (en) * | 1967-04-28 | 1971-05-26 | ||
| US4814015A (en) * | 1987-08-07 | 1989-03-21 | Prillaman Chemical Corporation | Waterborne nitrocellulose compositions |
| US20030005945A1 (en) * | 2000-03-13 | 2003-01-09 | Hiroyuki Onishi | Method for surface-treatment, surface-treated article and device for surface treatment |
| JP2004175858A (en) * | 2002-11-25 | 2004-06-24 | Sakata Corp | Printing ink composition for shrink packaging, method for manufacturing printed matter for shrink packaging and printed matter for shrink packaging |
| CN101864245A (en) * | 2010-04-30 | 2010-10-20 | 佛山市顺德区乐从镇盛昌油墨有限公司 | Alcohol-soluble printing varnish and preparation method thereof |
| EP3398988A1 (en) * | 2015-12-29 | 2018-11-07 | Companhia Nitro Química Brasileira | Method for obtaining a colloidal dispersion, colloidal dispersion and use thereof |
| CN109593397A (en) * | 2018-11-21 | 2019-04-09 | 汕头东风印刷股份有限公司 | It is a kind of suitable for intaglio printing and with special artistic effect aqueous UV ink |
-
2020
- 2020-06-09 CN CN202010517678.2A patent/CN111635671B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1232971A (en) * | 1967-04-28 | 1971-05-26 | ||
| US4814015A (en) * | 1987-08-07 | 1989-03-21 | Prillaman Chemical Corporation | Waterborne nitrocellulose compositions |
| US20030005945A1 (en) * | 2000-03-13 | 2003-01-09 | Hiroyuki Onishi | Method for surface-treatment, surface-treated article and device for surface treatment |
| JP2004175858A (en) * | 2002-11-25 | 2004-06-24 | Sakata Corp | Printing ink composition for shrink packaging, method for manufacturing printed matter for shrink packaging and printed matter for shrink packaging |
| CN101864245A (en) * | 2010-04-30 | 2010-10-20 | 佛山市顺德区乐从镇盛昌油墨有限公司 | Alcohol-soluble printing varnish and preparation method thereof |
| EP3398988A1 (en) * | 2015-12-29 | 2018-11-07 | Companhia Nitro Química Brasileira | Method for obtaining a colloidal dispersion, colloidal dispersion and use thereof |
| CN109593397A (en) * | 2018-11-21 | 2019-04-09 | 汕头东风印刷股份有限公司 | It is a kind of suitable for intaglio printing and with special artistic effect aqueous UV ink |
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