CN112048748A - Preparation process of treatment-free printing plate for printing - Google Patents
Preparation process of treatment-free printing plate for printing Download PDFInfo
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- CN112048748A CN112048748A CN202010934459.4A CN202010934459A CN112048748A CN 112048748 A CN112048748 A CN 112048748A CN 202010934459 A CN202010934459 A CN 202010934459A CN 112048748 A CN112048748 A CN 112048748A
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- 238000007639 printing Methods 0.000 title claims abstract description 62
- 238000002360 preparation method Methods 0.000 title claims abstract description 16
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 225
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 192
- -1 aluminum ion Chemical class 0.000 claims abstract description 33
- 239000000463 material Substances 0.000 claims abstract description 13
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 4
- PFUVRDFDKPNGAV-UHFFFAOYSA-N sodium peroxide Chemical compound [Na+].[Na+].[O-][O-] PFUVRDFDKPNGAV-UHFFFAOYSA-N 0.000 claims abstract description 4
- 239000002904 solvent Substances 0.000 claims description 51
- 230000003647 oxidation Effects 0.000 claims description 48
- 238000007254 oxidation reaction Methods 0.000 claims description 48
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 47
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 44
- 239000007788 liquid Substances 0.000 claims description 43
- 239000000853 adhesive Substances 0.000 claims description 33
- 230000001070 adhesive effect Effects 0.000 claims description 33
- 238000005868 electrolysis reaction Methods 0.000 claims description 32
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 30
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 30
- 235000011149 sulphuric acid Nutrition 0.000 claims description 30
- 230000001681 protective effect Effects 0.000 claims description 29
- 239000011248 coating agent Substances 0.000 claims description 25
- 238000000576 coating method Methods 0.000 claims description 25
- 238000004140 cleaning Methods 0.000 claims description 20
- 238000005260 corrosion Methods 0.000 claims description 18
- 230000007797 corrosion Effects 0.000 claims description 18
- 238000000034 method Methods 0.000 claims description 17
- ARXJGSRGQADJSQ-UHFFFAOYSA-N 1-methoxypropan-2-ol Chemical compound COCC(C)O ARXJGSRGQADJSQ-UHFFFAOYSA-N 0.000 claims description 16
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 claims description 16
- YEJRWHAVMIAJKC-UHFFFAOYSA-N 4-Butyrolactone Chemical compound O=C1CCCO1 YEJRWHAVMIAJKC-UHFFFAOYSA-N 0.000 claims description 16
- 229910000838 Al alloy Inorganic materials 0.000 claims description 16
- 238000001035 drying Methods 0.000 claims description 16
- 229960000583 acetic acid Drugs 0.000 claims description 15
- 239000012362 glacial acetic acid Substances 0.000 claims description 15
- 239000011259 mixed solution Substances 0.000 claims description 15
- 230000008569 process Effects 0.000 claims description 14
- 239000000243 solution Substances 0.000 claims description 14
- 238000002791 soaking Methods 0.000 claims description 13
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 claims description 12
- 238000005406 washing Methods 0.000 claims description 11
- 238000005507 spraying Methods 0.000 claims description 10
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 9
- 238000002156 mixing Methods 0.000 claims description 9
- 239000003960 organic solvent Substances 0.000 claims description 9
- 239000011347 resin Substances 0.000 claims description 9
- 229920005989 resin Polymers 0.000 claims description 9
- 238000004381 surface treatment Methods 0.000 claims description 9
- WNXJIVFYUVYPPR-UHFFFAOYSA-N 1,3-dioxolane Chemical compound C1COCO1 WNXJIVFYUVYPPR-UHFFFAOYSA-N 0.000 claims description 8
- 239000004411 aluminium Substances 0.000 claims description 8
- 239000010407 anodic oxide Substances 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 claims description 8
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 7
- 230000009471 action Effects 0.000 claims description 6
- 239000008367 deionised water Substances 0.000 claims description 6
- 229910021641 deionized water Inorganic materials 0.000 claims description 6
- 238000004806 packaging method and process Methods 0.000 claims description 6
- 238000012545 processing Methods 0.000 claims description 6
- 239000007921 spray Substances 0.000 claims description 6
- 239000010865 sewage Substances 0.000 claims description 5
- 239000006004 Quartz sand Substances 0.000 claims description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 4
- REDXJYDRNCIFBQ-UHFFFAOYSA-N aluminium(3+) Chemical compound [Al+3] REDXJYDRNCIFBQ-UHFFFAOYSA-N 0.000 claims description 4
- RHZUVFJBSILHOK-UHFFFAOYSA-N anthracen-1-ylmethanolate Chemical compound C1=CC=C2C=C3C(C[O-])=CC=CC3=CC2=C1 RHZUVFJBSILHOK-UHFFFAOYSA-N 0.000 claims description 4
- 239000003830 anthracite Substances 0.000 claims description 4
- 230000015556 catabolic process Effects 0.000 claims description 4
- KRVSOGSZCMJSLX-UHFFFAOYSA-L chromic acid Substances O[Cr](O)(=O)=O KRVSOGSZCMJSLX-UHFFFAOYSA-L 0.000 claims description 4
- 239000003792 electrolyte Substances 0.000 claims description 4
- AWJWCTOOIBYHON-UHFFFAOYSA-N furo[3,4-b]pyrazine-5,7-dione Chemical compound C1=CN=C2C(=O)OC(=O)C2=N1 AWJWCTOOIBYHON-UHFFFAOYSA-N 0.000 claims description 4
- 238000002844 melting Methods 0.000 claims description 4
- 230000008018 melting Effects 0.000 claims description 4
- 235000006408 oxalic acid Nutrition 0.000 claims description 4
- 239000008399 tap water Substances 0.000 claims description 4
- 235000020679 tap water Nutrition 0.000 claims description 4
- 238000005520 cutting process Methods 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 3
- 238000006386 neutralization reaction Methods 0.000 claims description 3
- 238000009413 insulation Methods 0.000 claims description 2
- 229920002120 photoresistant polymer Polymers 0.000 claims 2
- 239000011253 protective coating Substances 0.000 claims 1
- 239000010410 layer Substances 0.000 description 16
- 238000010521 absorption reaction Methods 0.000 description 6
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- 238000011161 development Methods 0.000 description 4
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- 238000013329 compounding Methods 0.000 description 2
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- 241001391944 Commicarpus scandens Species 0.000 description 1
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- 239000010419 fine particle Substances 0.000 description 1
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Images
Classifications
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
- C25D11/02—Anodisation
- C25D11/04—Anodisation of aluminium or alloys based thereon
- C25D11/16—Pretreatment, e.g. desmutting
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
- C25D11/02—Anodisation
- C25D11/04—Anodisation of aluminium or alloys based thereon
- C25D11/12—Anodising more than once, e.g. in different baths
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25F—PROCESSES FOR THE ELECTROLYTIC REMOVAL OF MATERIALS FROM OBJECTS; APPARATUS THEREFOR
- C25F3/00—Electrolytic etching or polishing
- C25F3/02—Etching
- C25F3/04—Etching of light metals
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/004—Photosensitive materials
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Printing Plates And Materials Therefor (AREA)
Abstract
The invention discloses a preparation process of a treatment-free printing plate for printing, and belongs to the technical field of treatment-free printing plates for printing. The preparation process of the treatment-free plate comprises the following steps: s1: uncoiling, namely selecting 1050/H18 type or 1060/H18 type aluminum coils with the aluminum content of more than 99.5 percent, and uncoiling the aluminum coils by using a 250 type uncoiler; s2: deoiling, namely placing the aluminum material uncoiled in S2 in a container, sequentially inputting a sodium peroxide solution with the total alkalinity of 5-10% and a Hangao BONDERITE-AK 338LH type coil deoiling agent with the aluminum ion concentration of 3% -7%, wherein the ratio of the two solutions is 1:2-3:4, so that the two solutions submerge the coil, treating for 0.5-1.0min, and deoiling; the invention can improve the hardness and the wear resistance of the treatment-free plate when in use.
Description
Technical Field
The invention relates to the technical field of treatment-free printing plates for printing, in particular to a preparation process of a treatment-free printing plate for printing.
Background
With the spread of computers, printing plates of the so-called computer-to-plate (CTP) type have appeared and started to spread widely, in which printing plates are made by printing directly on a plate material from an original document on a computer using a laser, a thermal head, an ink jet, or the like, without using a plate-making film. Among them, printing plates using laser are further classified into two types, i.e., a printing plate using a photon mode of photo reaction and a thermal mode of photo-thermal conversion to induce thermal reaction. Among them, the CTP plate of the thermal mode type is expected to be the mainstream in the future because of its advantage of being operable in the bright room. In the photon mode, a post-process such as deactivation or development is required so that the unexposed portion does not react after exposure, but in the thermal mode, the post-process can be omitted, and therefore, a so-called process-free plate can be expected.
There are various types of process-free plates, and one of them is an on-press development type. This type is, for example, a type in which an oleophilic layer and an ink-repellent layer, or two layers of an oleophilic layer and a hydrophilic layer are laminated on a support, and the adhesion between the layer on the surface side and the layer below is changed by laser exposure, thereby removing a portion having low adhesion on a printing machine. In order to remove the portion having low adhesion, various methods such as contact with a water supply roller, contact with an ink roller, peeling by ink adhesion, contact with a blanket cylinder, and the like can be used. In this on-press development type printing plate, since at least a part of the surface layer is removed on the printing press, it is desirable that the removed ground layer is not colored in order to prevent coloring contamination of dampening water or ink of the printing press, and thus it is difficult to impart good plate testing properties.
The non-chemical treatment of printing plates is favored over the non-treatment of printing plates for several reasons: firstly, the disposable printing plate has some defects in use, such as no contrast, no error found before printing on the machine, poor scratch resistance, unsuitability for an automatic plate unit on a plate cylinder, easy mixing of the cylinder with chemicals on the printing machine, sensitivity to sunlight, difficult storage, etc., which bring much inconvenience to the actual production. Secondly, the chemical treatment-free printing plate can completely meet the production requirements of people, has high sensitivity, can meet the requirements of newspaper printing factories and printing service organizations on effectiveness, reduces the startup waste of printing machines, has higher printing endurance and resolution, and can ensure that people can see the image on the printing plate before printing on the printing machine, thereby effectively reducing the occurrence of errors.
European patents EPI736312 and I910082 provide another lithographic printing precursor, the system comprises infrared absorption dye and thermoplastic microspheres, after infrared laser exposure, the infrared absorption dye undergoes photochemical reaction under the action of laser, so that image-text parts are formed, and a printing plate is obtained after development. In the system construction, the precursor of the thermosensitive material is prepared by compounding the infrared absorption dye and the polymerized emulsion. However, this system has many problems: firstly, because the infrared absorption dye is insoluble in water, an organic solvent is doped to increase the capacity of the dye in the compounding process, so that the stability of the emulsion is reduced, and the emulsion is not environment-friendly. Secondly, since the infrared absorbing dye is not coated by the polymer, the infrared absorbing dye is easy to decompose after long-term exposure to visible light, and the stability of the dye is reduced, which subsequently reduces the sensitivity of the thermosensitive material. Thirdly, the infrared absorption dye and the emulsion are compounded into a multi-system, which increases the difficulty of system preparation. Fourthly, the infrared absorption dye and the nanometer particles are in a separated state in the system, and the polymer nanometer particles can not be effectively broken to generate heat to phase change under the action of infrared light, so that the obtained image has small contrast, and the line is easy to break in the developing process.
As another type of the non-processed plate, a polarity changing type may be mentioned. This type is a structure in which, for example, laser exposure is performed on a support, and only the exposed portion of the hydrophilic resin photosensitive layer is changed from hydrophilic to lipophilic. Since the plate surface after exposure is immediately separated into oleophilic and hydrophilic, a completely treatment-free plate can be made without requiring removal work on the printing press. As a printing plate of this type, for example, WO01/83234 discloses a printing plate characterized in that a photosensitive layer in which lipophilic polymer fine particles are dispersed in a hydrophilic polymer matrix is exposed to laser light to foam or thermally fuse the lipophilic polymer, thereby losing hydrophilicity and becoming oleophilic ink, and the plate is inferior in hardness and abrasion resistance.
Disclosure of Invention
The invention aims to solve the problems that the hydrophilicity is lost and the printing plate becomes oleophilic ink by foaming or thermal welding of a photosensitive layer formed by dispersing oleophilic polymer particles in a hydrophilic polymer matrix through laser exposure, and the hardness and the wear resistance of the printing plate are poor in the prior art, and provides a preparation process of a treatment-free printing plate for printing.
In order to achieve the purpose, the invention adopts the following technical scheme:
a preparation process of a treatment-free plate for printing comprises the following steps:
s1: uncoiling, namely selecting 1050/H18 type or 1060/H18 type aluminum coils with the aluminum content of more than 99.5 percent, and uncoiling the aluminum coils by using a 250 type uncoiler;
s2: deoiling, namely placing the aluminum material uncoiled in S2 in a container, sequentially inputting a sodium peroxide solution with the total alkalinity of 5-10% and a Hangao BONDERITE-AK 338LH type coil deoiling agent with the aluminum ion concentration of 3% -7%, wherein the ratio of the two solutions is 1:2-3:4, so that the two solutions submerge the coil, processing for 0.5-1.0h, and deoiling;
s3, washing, namely spraying and cleaning the aluminum coil deoiled in S2 by water at 50-70 ℃ so that the corrosion loss of the surface of the aluminum coil is 1-3g per square meter, and discharging the water to a sewage station after washing;
s4, electrolysis, namely, putting the cleaned aluminum coil in S3 into sulfuric acid with the concentration of 1-4% for neutralization, after the aluminum coil is neutralized, processing for 0.3-0.6min, then spraying and cleaning at 10-30 ℃, after the aluminum coil is cleaned, putting the aluminum coil into liquid for electrolysis, sequentially inputting hydrochloric acid with the concentration of 0.7-1.3%, glacial acetic acid with the concentration of 2-4% and aluminum ions with the concentration of 0.5-1.2%, and performing low-voltage large-current three-phase alternating current at the temperature of 20-40 ℃ for four times of electrolysis, so that the roughness Ra of the surface of the aluminum coil is as follows: carrying out liquid electrolysis on the aluminum coil by 0.3-0.6 um;
s5, deashing, namely, after the aluminum coil in the S4 is electrolyzed, spraying and cleaning the aluminum coil by water at 10-30 ℃, putting the aluminum coil into a mixed solution of NaOH with the total alkalinity of 1-5%, NaCO3 with the total alkalinity of 1-5%, C6H11NaO7 with the total alkalinity of 1-5% and aluminum ions 2% in a container in sequence, soaking for 0.3-0.7min, then taking out, and cleaning the aluminum coil twice by water to obtain the OD value of the plate base: 0.23-0.27 aluminum material;
s6, performing surface treatment, namely, after ash removal of the aluminum coil in the S5 is completed, putting the aluminum coil into a liquid conductive container, soaking for 0.3-0.8H, wherein the temperature in the liquid conductive container is 20-40 ℃, the concentration of H2SO4 in the liquid conductive container is 16-20%, taking out the aluminum coil after soaking in the liquid conductive container, putting the aluminum coil into an anodic oxidation container, soaking for 0.3-0.8min, the temperature in the anodic oxidation container is 20-40 ℃, inputting H2SO4 and aluminum ions 1 with the concentrations of 14-24% in sequence in anodic oxidation, and repeating the steps for two times to obtain the thickness of the oxide film on the surface of the aluminum material, which is 2.5-3.5 g/square meter;
s7, sealing holes, namely washing the aluminum roll processed in the step S6 with water, and then putting the aluminum roll into a plate making machine for deionized water treatment, wherein the temperature of a developing solution in the plate making machine is 20-30 ℃ in the deionized water process, the plate making machine is 800 turns of a screen 8600S plate making machine, putting the aluminum roll into the plate making machine, placing the aluminum roll for 25-40S, then taking out the processed aluminum roll, and when the aluminum roll is taken out, the water content in the plate making machine is less than or equal to 55%;
s8, drying, namely placing the aluminum roll processed in the S7 into a drying box with the model of DRP-8804 for moisture drying, wherein the temperature in the drying box is 30-80 ℃, the aluminum roll is placed for 0.2-0.8min, after drying, the aluminum roll is coated by photosensitive adhesive and protective adhesive, the photosensitive adhesive consists of photosensitive resin and organic solvent, the solvent is mainly formed by mixing propylene glycol methyl ether, butanone, dioxolane and gamma-butyrolactone, after coating the aluminum roll, the thickness of the surface coating of the aluminum roll is 0.8-1.4 g/square meter, the solvent residue is less than or equal to 4%, the thickness of the protective adhesive on the surface of the aluminum roll is 0.6-1.0 g/square meter, and the solvent residue is less than or equal to 4%;
and S9, packaging, namely cutting the aluminum coil in the S8 after the aluminum coil is coated, and packaging by plate selection after the aluminum coil is cut.
Preferably, the aluminum roll is subjected to spray cleaning by 50 ℃ water, the corrosion loss is 1 g/square meter, when the aluminum roll is subjected to spray cleaning by 60 ℃ water, the corrosion loss is 2 g/square meter, and when the aluminum roll is subjected to spray cleaning by 70 ℃ water, the corrosion loss is 3 g/square meter.
Preferably, the aluminum coil is processed in an electrolysis mixed solution with 0.7% of hydrochloric acid concentration, 2% of glacial acetic acid concentration and 0.5% of aluminum ions at the temperature of 20 ℃ for 0.3min, and the roughness of the surface of the aluminum coil is Ra after four times of electrolysis by using a low-voltage large-current three-phase alternating current: 0.32um, the aluminium book is at hydrochloric acid concentration 0.9%, glacial acetic acid concentration 3%, aluminium ion 0.7%'s electrolysis mixed solution, and when the temperature 30 ℃, handling 0.4min, low-voltage heavy current three-phase alternating current, after carrying out four times of electrolysis, the roughness on aluminium book surface is Ra: 0.5um, the aluminium book is at hydrochloric acid concentration 1%, glacial acetic acid concentration 4%, aluminium ion 1.2%'s electrolysis mixed solution, and at temperature 40 ℃, when handling 0.3min, low-voltage heavy current three-phase alternating current carries out the quartic electrolysis after, and the roughness on aluminium book surface is Ra: 0.0.6 um.
Preferably, the aluminum and the aluminum alloy are placed in corresponding electrolyte (such as sulfuric acid, chromic acid, oxalic acid and the like) to be used as an anode, electrolysis is carried out under the action of specific conditions and external current, the aluminum or the aluminum alloy of the anode is oxidized, an aluminum oxide thin layer is formed on the surface of the aluminum or the aluminum alloy of the anode, the thickness of the aluminum oxide thin layer is 5-30 micrometers, the hard anodic oxide film can reach 25-150 micrometers, the hardness and the wear resistance of the anodized aluminum or the aluminum alloy are improved to 250-500 kilograms per square millimeter, the heat resistance is good, the melting point of the hard anodic oxide film is high to 2320K, the insulation performance is good, the breakdown voltage is high to 2000V, and the corrosion resistance is enhanced.
Preferably, the temperature in the liquid conduction and anodic oxidation is 20 ℃, the concentration of H2SO4 in the liquid conduction is 16%, the concentration of H2SO4 in the anodic oxidation is 14%, aluminum ions are 1%, an aluminum coil is immersed in the container in the liquid conduction and anodic oxidation for 0.3min, the thickness of an oxide film is 2.5 g/square meter, the temperature in the liquid conduction and anodic oxidation in the surface treatment process is 21 ℃, the concentration of H2SO4 in the liquid conduction is 17%, the concentration of H2SO4 in the anodic oxidation is 14%, the thickness of aluminum ions is 1%, the concentration of an aluminum coil is immersed in the container in the liquid conduction and anodic oxidation for 0.4min, the thickness of an oxide film is 2.6 g/square meter, and SO on, when the temperature in the liquid conduction and anodic oxidation in the surface treatment process is more than 25 ℃, the concentration of H2SO4 in the liquid conduction is 20%, the concentration of H2SO4 in the anodic oxidation is 22%, the aluminum ion 1%, and the concentration of an aluminum coil is immersed in the container in the body conduction and anodic oxidation for 0.8min, the thickness of the oxidation film is more than 3 g/square meter.
Preferably, after the hole sealing is finished, tap water with the concentration filtered by quartz sand and anthracite is needed for cleaning.
Preferably, after the aluminum coil is dried, the aluminum coil is coated by photosensitive resist, and after the photosensitive resist is coated, the aluminum coil is dried, coated by protective resist and then dried.
Preferably, the photosensitive adhesive is composed of photosensitive resin and an organic solvent, wherein the solvent is mainly formed by mixing propylene glycol methyl ether, butanone, dioxolane and gamma-butyrolactone, when the thickness of the coating is 0.8 g/square meter, the solvent is left by 4%, when the thickness of the protective adhesive is 0.6 g/square meter, the solvent is left by 4%, when the thickness of the coating is 0.9 g/square meter, the solvent is left by 4.1%, when the thickness of the protective adhesive is 0.7 g/square meter, the solvent is left by 4.1%, when the thickness of the coating is 1 g/square meter, the solvent is left by 4.2%, when the thickness of the protective adhesive is 0.7 g/square meter, the solvent is left by 4.2%, and so on, when the thickness of the coating is 1.4 g/square meter, the solvent is left by 4.6%, and when the thickness of the.
Compared with the prior art, the invention provides a preparation process of a treatment-free printing plate for printing, which has the following beneficial effects:
1. according to the preparation process of the treatment-free plate for printing, the aluminum roll after deoiling is sprayed and cleaned through water at 50 ℃, the corrosion loss is 1 g/square meter, when the aluminum roll is sprayed and cleaned through water at 60 ℃, the corrosion loss is 2 g/square meter, when the aluminum roll is sprayed and cleaned through water at 70 ℃, the corrosion loss is 3 g/square meter, the water temperature can be adjusted according to the requirements of different aluminum rolls, after the water washing is completed, the water is discharged to a sewage station, and the pollution of the sprayed water to the environment is prevented.
2. According to the preparation process of the treatment-free plate for printing, when an aluminum coil is treated for 0.3min at the temperature of 20 ℃ in an electrolysis mixed solution with the hydrochloric acid concentration of 0.7%, the glacial acetic acid concentration of 2% and the aluminum ions of 0.5%, low-voltage large-current three-phase alternating current is electrolyzed for four times, and the roughness of the surface of the aluminum coil is Ra: 0.32um, when the aluminum coil is treated in an electrolysis mixed solution with 0.9 percent of hydrochloric acid concentration, 3 percent of glacial acetic acid concentration and 0.7 percent of aluminum ions at the temperature of 30 ℃ for 0.4min, low-voltage large-current three-phase alternating current is electrolyzed for four times, and the roughness of the surface of the aluminum coil is Ra: 0.5um, the aluminum coil is treated in an electrolysis mixed solution with 1 percent of hydrochloric acid concentration, 4 percent of glacial acetic acid concentration and 1.2 percent of aluminum ions at the temperature of 40 ℃ for 0.3min, low-voltage large-current three-phase alternating current is electrolyzed for four times, and the roughness of the surface of the aluminum coil is Ra: 0.0.6um, can be adjusted according to the requirements of different roughness of different printing processing plates.
3. The preparation process of the treatment-free plate for printing comprises the steps of placing aluminum and aluminum alloy into corresponding electrolyte (such as sulfuric acid, chromic acid, oxalic acid and the like) to serve as an anode, electrolyzing under specific conditions and under the action of external current, oxidizing the aluminum or aluminum alloy of the anode to form an aluminum oxide thin layer on the surface, wherein the thickness of the aluminum oxide thin layer is 5-30 micrometers, the thickness of a hard anodic oxide film can reach 25-150 micrometers, the hardness and the wear resistance of the anodized aluminum or aluminum alloy can be improved to 250-500 kg/square millimeter, the heat resistance is good, the melting point of the hard anodic oxide film is 2320K, the insulativity is good, the breakdown voltage is high to 2000V, and the corrosion resistance is enhanced.
4. The preparation process of the treatment-free plate for printing comprises the steps of enabling the temperature in liquid conduction and anodic oxidation to be 20 ℃, enabling the concentration of H2SO4 in liquid conduction to be 16%, enabling the concentration of H2SO4 in anodic oxidation to be 14%, enabling aluminum ions to be 1%, enabling aluminum rolls to be immersed in containers for body conduction and anodic oxidation for 0.3min, enabling the thickness of an oxide film to be 2.5 g/square meter, enabling the temperature in liquid conduction and anodic oxidation to be 21 ℃, enabling the concentration of H2SO4 in liquid conduction to be 17%, enabling the concentration of H2SO4 in anodic oxidation to be 14%, enabling aluminum ions to be 1%, enabling aluminum rolls to be immersed in containers for body conduction and anodic oxidation for 0.4min, enabling the thickness of the oxide film to be 2.6 g/square meter, and the like in sequence, enabling the concentration of H2SO4 in liquid conduction to be 20%, enabling the concentration of H2SO4 in anodic oxidation to be 22%, enabling aluminum ions to be 1% and enabling aluminum rolls to be immersed in containers for body conduction and anodic oxidation for 0.8min, the thickness of the oxidation film is more than 3 g/square meter.
5. The preparation process of the treatment-free plate for printing comprises the steps of mixing photosensitive resin and an organic solvent, wherein the solvent is mainly formed by mixing propylene glycol methyl ether, butanone, dioxolane and gamma-butyrolactone, when the thickness of a coating is 0.8 g/square meter, the solvent is left by 4%, when the thickness of a protective glue is 0.6 g/square meter, the solvent is left by 4%, when the thickness of the coating is 0.9 g/square meter, the solvent is left by 4.1%, when the thickness of the protective glue is 0.7 g/square meter, the solvent is left by 4.1%, when the thickness of the coating is 1 g/square meter, the solvent is left by 4.2%, when the thickness of the protective glue is 0.7 g/square meter, the solvent is left by 4.2%, and so on, when the thickness of the coating is 1.4 g/square meter, the solvent is left by 4.6%, when the thickness of the.
Drawings
FIG. 1 is a process diagram of a process for preparing a process-free printing plate according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
A preparation process of a treatment-free plate for printing comprises the following steps:
s1: uncoiling, namely selecting 1050/H18 type or 1060/H18 type aluminum coils with the aluminum content of more than 99.5 percent, and uncoiling the aluminum coils by using a 250 type uncoiler;
s2: deoiling, namely placing the aluminum material uncoiled in S2 in a container, sequentially inputting a sodium peroxide solution with the total alkalinity of 5-10% and a Hangao BONDERITE-AK 338LH type coil deoiling agent with the aluminum ion concentration of 3% -7%, wherein the ratio of the two solutions is 1:2-3:4, so that the two solutions submerge the coil, treating for 0.5-1.0min, and deoiling;
s3, washing, namely spraying and cleaning the aluminum coil deoiled in S2 by water at 50-70 ℃ so that the corrosion loss of the surface of the aluminum coil is 1-3g per square meter, and discharging the water to a sewage station after washing;
s4, electrolysis, namely, putting the cleaned aluminum coil in S3 into sulfuric acid with the concentration of 1-4% for neutralization, after the aluminum coil is neutralized, processing for 0.3-0.6min, then spraying and cleaning at 10-30 ℃, after the aluminum coil is cleaned, putting the aluminum coil into liquid for electrolysis, sequentially inputting hydrochloric acid with the concentration of 0.7-1.3%, glacial acetic acid with the concentration of 2-4% and aluminum ions with the concentration of 0.5-1.2%, and performing low-voltage large-current three-phase alternating current at the temperature of 20-40 ℃ for four times of electrolysis, so that the roughness Ra of the surface of the aluminum coil is as follows: carrying out liquid electrolysis on the aluminum coil by 0.3-0.6 um;
s5, deashing, namely, after the aluminum coil in the S4 is electrolyzed, spraying and cleaning the aluminum coil by water at 10-30 ℃, putting the aluminum coil into a mixed solution of NaOH with the total alkalinity of 1-5%, NaCO3 with the total alkalinity of 1-5%, C6H11NaO7 with the total alkalinity of 1-5% and aluminum ions 2% in a container in sequence, soaking for 0.3-0.7min, then taking out, and cleaning the aluminum coil twice by water to obtain the OD value of the plate base: 0.23-0.27 aluminum material;
s6, performing surface treatment, namely, after ash removal of the aluminum coil in the S5 is completed, putting the aluminum coil into a liquid conductive container, soaking for 0.3-0.8H, controlling the temperature in the liquid conductive container to be 20-40 ℃, controlling the concentration of H2SO4 in the liquid conductive container to be 16-20%, taking out the aluminum coil after soaking in the liquid conductive container, putting the aluminum coil into an anodic oxidation container, soaking for 0.3-0.8H, controlling the temperature in the anodic oxidation container to be 20-40 ℃, sequentially inputting H2SO4 and aluminum ions 1% with the concentration of 14-24% in anodic oxidation, and repeating the steps for two times to obtain the thickness of the oxide film on the surface of the aluminum material of 2.5-3.5 g/square meter;
s7, sealing holes, namely washing the aluminum roll processed in the step S6 with water, and then putting the aluminum roll into a plate making machine for deionized water treatment, wherein the temperature of a developing solution in the plate making machine is 20-30 ℃ in the deionized water process, the plate making machine is 800 turns of a screen 8600S plate making machine, putting the aluminum roll into the plate making machine, placing the aluminum roll for 25-40S, then taking out the processed aluminum roll, and when the aluminum roll is taken out, the water content in the plate making machine is less than or equal to 55%;
s8, drying, namely placing the aluminum roll processed in the S7 into a drying box with the model of DRP-8804 for moisture drying, wherein the temperature in the drying box is 30-80 ℃, the aluminum roll is placed for 0.2-0.8min, after drying, the aluminum roll is coated by photosensitive adhesive and protective adhesive, the photosensitive adhesive consists of photosensitive resin and organic solvent, the solvent is mainly formed by mixing propylene glycol methyl ether, butanone, dioxolane and gamma-butyrolactone, after coating the aluminum roll, the thickness of the surface coating of the aluminum roll is 0.8-1.4 g/square meter, the solvent residue is less than or equal to 4%, the thickness of the protective adhesive on the surface of the aluminum roll is 0.6-1.0 g/square meter, and the solvent residue is less than or equal to 4;
and S9, packaging, namely cutting the aluminum coil in the S8 after the aluminum coil is coated, and packaging by plate selection after the aluminum coil is cut.
Spraying and cleaning the aluminum coil after deoiling through water at 50 ℃, wherein the corrosion loss is 1 g/square meter, when the aluminum coil is sprayed and cleaned through water at 60 ℃, the corrosion loss is 2 g/square meter, when the aluminum coil is sprayed and cleaned through water at 70 ℃, the corrosion loss is 3 g/square meter, the water temperature can be adjusted according to the requirements of different aluminum coils, and after water washing is finished, the water is discharged to a sewage station to prevent the sprayed water from polluting the environment;
the aluminum coil is treated in an electrolysis mixed solution with 0.7 percent of hydrochloric acid concentration, 2 percent of glacial acetic acid concentration and 0.5 percent of aluminum ions at the temperature of 20 ℃ for 0.3min, low-voltage large-current three-phase alternating current is electrolyzed for four times, and the roughness of the surface of the aluminum coil is Ra: 0.32um, when the aluminum coil is treated in an electrolysis mixed solution with 0.9 percent of hydrochloric acid concentration, 3 percent of glacial acetic acid concentration and 0.7 percent of aluminum ions at the temperature of 30 ℃ for 0.4min, low-voltage large-current three-phase alternating current is electrolyzed for four times, and the roughness of the surface of the aluminum coil is Ra: 0.5um, the aluminum coil is treated in an electrolysis mixed solution with 1 percent of hydrochloric acid concentration, 4 percent of glacial acetic acid concentration and 1.2 percent of aluminum ions at the temperature of 40 ℃ for 0.3min, low-voltage large-current three-phase alternating current is electrolyzed for four times, and the roughness of the surface of the aluminum coil is Ra: 0.6um, can be adjusted according to the requirements of different printing processing plates for different roughness;
placing aluminum and aluminum alloy into corresponding electrolyte (such as sulfuric acid, chromic acid, oxalic acid and the like) to be used as an anode, electrolyzing under the action of specific conditions and external current, oxidizing the aluminum or aluminum alloy of the anode to form an aluminum oxide thin layer with the thickness of 5-30 micrometers on the surface, wherein a hard anodic oxide film can reach 25-150 micrometers, and the anodized aluminum or aluminum alloy improves the hardness and wear resistance of the anodized aluminum or aluminum alloy, can reach 250-500 kilograms per square millimeter, has good heat resistance, has a hard anodic oxide film melting point as high as 2320K, has excellent insulativity, has breakdown voltage as high as 2000V, and enhances the corrosion resistance;
the temperature in liquid conduction and anodic oxidation is 20 ℃, the concentration of H2SO4 in liquid conduction is 16%, the concentration of H2SO4 in anodic oxidation is 14%, aluminum ions are 1%, an aluminum roll is immersed in the container for bulk conduction and anodic oxidation for 0.3min, the thickness of an oxide film is 2.5 g/square meter, the temperature in liquid conduction and anodic oxidation in the surface treatment process is 21 ℃, the concentration of H2SO4 in liquid conduction is 17%, the concentration of H2SO4 in anodic oxidation is 14%, the thickness of aluminum ions is 1%, the aluminum roll is immersed in the container for bulk conduction and anodic oxidation for 0.4min, the thickness of the oxide film is 2.6 g/square meter, and the like, when the temperature in liquid conduction and anodic oxidation is above 25 ℃ in the surface treatment process, the concentration of H2SO4 in liquid conduction is 20%, the concentration of H2SO4 in anodic oxidation is 22%, aluminum ions are 1%, the aluminum coil is immersed in a container for bulk conduction and anodic oxidation for 0.8min, and the thickness of an oxide film is above 3 g/square meter.
After hole sealing is finished, tap water with the concentration filtered by quartz sand and anthracite is needed to be cleaned.
After the aluminum coil is dried, the aluminum coil is coated by photosensitive resist, and after the photosensitive resist is coated, the aluminum coil is dried, coated by protective resist and then dried.
The photosensitive adhesive is composed of photosensitive resin and an organic solvent, wherein the solvent is mainly propylene glycol methyl ether, butanone, dioxolane and gamma-butyrolactone, after an aluminum coil is processed, the coating thickness is 0.8 g/square meter, the solvent residue is 4%, the protective adhesive thickness is 0.6 g/square meter, the solvent residue is 4%, the coating thickness is 0.9 g/square meter, the solvent residue is 4.1%, the protective adhesive thickness is 0.7 g/square meter, the solvent residue is 4.1%, the coating thickness is 1 g/square meter, the solvent residue is 4.2%, the protective adhesive thickness is 0.7 g/square meter, the solvent residue is 4.2%, the coating thickness is 1.4 g/square meter, the solvent residue is 4.6%, the protective adhesive thickness is 1.0 g/square meter, and the solvent residue is 4.4%.
After hole sealing is finished, tap water with the concentration filtered by quartz sand and anthracite is needed to be cleaned.
After the aluminum coil is dried, the aluminum coil is coated by photosensitive resist, and after the photosensitive resist is coated, the aluminum coil is dried, coated by protective resist and then dried.
The photosensitive adhesive is composed of photosensitive resin and an organic solvent, wherein the solvent is mainly formed by mixing propylene glycol methyl ether, butanone, dioxolane and gamma-butyrolactone, when the thickness of a coating is 0.8 g/square meter, the solvent is left 4%, when the thickness of the protective adhesive is 0.6 g/square meter, the solvent is left 4%, when the thickness of the coating is 0.9 g/square meter, the solvent is left 4.1%, when the thickness of the protective adhesive is 0.7 g/square meter, the solvent is left 4.1%, when the thickness of the coating is 1 g/square meter, the solvent is left 4.2%, when the thickness of the protective adhesive is 0.7 g/square meter, the solvent is left 4.2%, and when the thickness of the protective adhesive is 1.4 g/square meter, the solvent is left 4.6%, and when the thickness of the protective adhesive is 1.0 g.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to cover the technical scope of the present invention and the equivalent alternatives or modifications according to the technical solution and the inventive concept of the present invention within the technical scope of the present invention.
Claims (8)
1. A preparation process of a treatment-free plate for printing is characterized by comprising the following steps:
s1: uncoiling, namely selecting 1050/H18 type or 1060/H18 type aluminum coils with the aluminum content of more than 99.5 percent, and uncoiling the aluminum coils by using a 250 type uncoiler;
s2: deoiling, namely placing the aluminum material uncoiled in S2 in a container, sequentially inputting a sodium peroxide solution with the total alkalinity of 5-10% and a Hangao BONDERITE-AK 338LH type coil deoiling agent with the aluminum ion concentration of 3% -7%, wherein the ratio of the two solutions is 1:2-3:4, so that the two solutions submerge the coil, treating for 0.2-1.0min, and deoiling;
s3, washing, namely spraying and cleaning the aluminum coil deoiled in S2 by water at 50-70 ℃ so that the corrosion loss of the surface of the aluminum coil is 1-3g per square meter, and discharging the water to a sewage station after washing;
s4, electrolysis, namely, putting the cleaned aluminum coil in S3 into sulfuric acid with the concentration of 1-4% for neutralization, after the aluminum coil is neutralized, processing for 0.3-0.6min, then spraying and cleaning at 10-30 ℃, after the aluminum coil is cleaned, putting the aluminum coil into liquid for electrolysis, sequentially inputting hydrochloric acid with the concentration of 0.7-1.3%, glacial acetic acid with the concentration of 2-4% and aluminum ions with the concentration of 0.5-1.2%, and performing low-voltage large-current three-phase alternating current at the temperature of 20-40 ℃ for four times of electrolysis, so that the roughness Ra of the surface of the aluminum coil is as follows: carrying out liquid electrolysis on the aluminum coil by 0.3-0.6 um;
s5, deashing, namely, after the aluminum coil in the S4 is electrolyzed, spraying and cleaning the aluminum coil by water at 10-30 ℃, putting the aluminum coil into a mixed solution of NaOH with the total alkalinity of 1-5%, NaCO3 with the total alkalinity of 1-5%, C6H11NaO7 with the total alkalinity of 1-5% and aluminum ions 2% in a container in sequence, soaking for 0.3-0.7min, then taking out, and cleaning the aluminum coil twice by water to obtain the OD value of the plate base: 0.23-0.27 aluminum material;
s6, performing surface treatment, namely, after ash removal of the aluminum coil in the S5 is completed, putting the aluminum coil into a liquid conductive container, soaking for 0.3-0.8H, wherein the temperature in the liquid conductive container is 20-40 ℃, the concentration of H2SO4 in the liquid conductive container is 16-20%, taking out the aluminum coil after soaking in the liquid conductive container, putting the aluminum coil into an anodic oxidation container, soaking for 0.3-0.8min, the temperature in the anodic oxidation container is 20-40 ℃, inputting H2SO4 and aluminum ions 1 with the concentrations of 14-24% in sequence in anodic oxidation, and repeating the steps for two times to obtain the thickness of the oxide film on the surface of the aluminum material, which is 2.5-3.5 g/square meter;
s7, sealing holes, namely washing the aluminum roll processed in the step S6 with water, and then putting the aluminum roll into a plate making machine for deionized water treatment, wherein the temperature of a developing solution in the plate making machine is 20-30 ℃ in the deionized water process, the plate making machine is 800 turns of a screen 8600S plate making machine, putting the aluminum roll into the plate making machine, placing the aluminum roll for 25-40S, then taking out the processed aluminum roll, and when the aluminum roll is taken out, the water content in the plate making machine is less than or equal to 55%;
s8, drying, namely placing the aluminum roll processed in the S7 into a drying box with the model of DRP-8804 for moisture drying, wherein the temperature in the drying box is 30-80 ℃, the aluminum roll is placed for 0.2-0.8min, after drying, the aluminum roll is coated by photosensitive adhesive and protective adhesive, the photosensitive adhesive consists of photosensitive resin and organic solvent, the solvent is mainly formed by mixing propylene glycol methyl ether, butanone, dioxolane and gamma-butyrolactone, after coating the aluminum roll, the thickness of the surface coating of the aluminum roll is 0.8-1.4 g/square meter, the solvent residue is less than or equal to 4%, the thickness of the protective adhesive on the surface of the aluminum roll is 0.6-1.0 g/square meter, and the solvent residue is less than or equal to 4%;
and S9, packaging, namely cutting the aluminum coil in the S8 after the aluminum coil is coated, and packaging by plate selection after the aluminum coil is cut.
2. The process for preparing a treatment-free plate for printing according to claim 1, wherein the aluminum roll is subjected to spray cleaning with water at 50 ℃ and has a corrosion loss of 1g per square meter, when the aluminum roll is subjected to spray cleaning with water at 60 ℃, the corrosion loss is 2g per square meter, and when the aluminum roll is subjected to spray cleaning with water at 70 ℃, the corrosion loss is 3g per square meter.
3. The process for preparing a treatment-free plate for printing according to claim 1, wherein the aluminum roll is treated with a low-voltage large-current three-phase alternating current at a temperature of 20 ℃ for 0.3min in an electrolysis mixed solution of 0.7% hydrochloric acid, 2% glacial acetic acid and 0.5% aluminum ions, and after four times of electrolysis, the roughness of the surface of the aluminum roll is Ra: 0.32um, the aluminium book is at hydrochloric acid concentration 0.9%, glacial acetic acid concentration 3%, aluminium ion 0.7%'s electrolysis mixed solution, and when the temperature 30 ℃, handling 0.4h, low-voltage heavy current three-phase alternating current, after carrying out four times of electrolysis, the roughness on aluminium book surface is Ra: 0.5um, the aluminium book is at hydrochloric acid concentration 1%, glacial acetic acid concentration 4%, aluminium ion 1.2%'s electrolysis mixed solution, and at temperature 40 ℃, when handling 0.3min, low-voltage heavy current three-phase alternating current carries out the quartic electrolysis after, and the roughness on aluminium book surface is Ra: 0.0.6 um.
4. The process for preparing a treatment-free plate for printing according to claim 1, wherein the aluminum and the aluminum alloy are placed in a corresponding electrolyte (such as sulfuric acid, chromic acid, oxalic acid, etc.) as an anode, electrolysis is performed under specific conditions and under the action of an applied current, the aluminum or the aluminum alloy of the anode is oxidized, an aluminum oxide thin layer is formed on the surface, the thickness of the aluminum oxide thin layer is 5-30 micrometers, the hardness and the wear resistance of the hard anodic oxide film can reach 25-150 micrometers, the aluminum or the aluminum alloy after the anodic oxidation can improve the hardness and the wear resistance of the aluminum or the aluminum alloy, the aluminum or the aluminum alloy can reach 250-500 kilograms/square millimeters, the heat resistance is good, the melting point of the hard anodic oxide film can reach 2320K, the insulation property is good, the breakdown voltage can reach 2000V, and the.
5. The process for preparing a treatment-free printing plate for printing according to claim 1, wherein the temperature in liquid conduction and anodic oxidation is 20 ℃, the concentration of H2SO4 in liquid conduction is 16%, the concentration of H2SO4 in anodic oxidation is 14%, aluminum ions are 1%, an aluminum roll is soaked in a container with body conduction and anodic oxidation for 0.3min, the thickness of an oxide film is 2.5g per square meter, the temperature in liquid conduction and anodic oxidation in the surface treatment process is 21 ℃, the concentration of H2SO4 in liquid conduction is 17%, the concentration of H2SO4 in anodic oxidation is 14%, the thickness of aluminum ions is 1%, the temperature of an aluminum roll in the container with body conduction and anodic oxidation is 0.4H, the thickness of the oxide film is 2.6g per square meter, and SO on, when the temperature in liquid conduction and anodic oxidation in the surface treatment process is more than 25 ℃, the concentration of H2SO4 in liquid conduction is 20%, and the concentration of H2SO4 in anodic oxidation is 22%, 1% of aluminum ions, soaking the aluminum coil in a container with body conductivity and anodic oxidation for 0.8min, and the thickness of the oxidation film is more than 3 g/square meter.
6. The process for preparing a treatment-free printing plate according to claim 1, wherein after the sealing, tap water with a concentration filtered by quartz sand and anthracite is required to be cleaned.
7. The process of claim 1, wherein the aluminum roll is coated with the photoresist after drying, and the photoresist is dried after coating, then coated with the protective coating, and then dried.
8. The process according to claim 1, wherein the photosensitive adhesive comprises a photosensitive resin and an organic solvent, the solvent is mainly formed by mixing propylene glycol methyl ether, butanone, dioxolane and gamma-butyrolactone, when the coating thickness is 0.8 g/square meter, the solvent remains 4%, when the protective adhesive thickness is 0.6 g/square meter, the solvent remains 4%, when the coating thickness is 0.9 g/square meter, the solvent remains 4.1%, when the protective adhesive thickness is 0.7 g/square meter, the solvent remains 4.1%, when the coating thickness is 1 g/square meter, the solvent remains 4.2%, when the protective adhesive thickness is 0.7 g/square meter, the solvent remains 4.2%, and when the protective adhesive thickness is 1.4 g/square meter, the solvent remains 4.6%, when the protective adhesive thickness is 1.0 g/square meter, the solvent remains 4.4%.
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