CN110760847A

CN110760847A - Etching method using inkjet printing and inkjet printer for the etching method

Info

Publication number: CN110760847A
Application number: CN201911194760.XA
Authority: CN
Inventors: 刘晓俊; 覃勇; 陈卫华; 黄明明
Original assignee: Dongguan Tu Chuang Intelligent Manufacturing Co Ltd
Current assignee: Dongguan Tu Chuang Intelligent Manufacturing Co Ltd
Priority date: 2019-11-28
Filing date: 2019-11-28
Publication date: 2020-02-07
Anticipated expiration: 2039-11-28
Also published as: CN110760847B; CN115142064B; CN115142064A

Abstract

The invention discloses an etching method using ink-jet printing and an ink-jet printer for the etching method, wherein the etching method comprises the following steps: a substrate providing step: providing a substrate comprising a metal material having a surface to be etched; solvent spraying: spraying droplets of a solvent onto a surface to be etched in an imagewise pattern by a first spray of an ink jet printer, the etchant spraying step: spraying droplets of the etchant in an imaged pattern toward the surface to be etched by a second spray of the ink jet printer to mix with the solvent and chemically react to form an etched pattern on the surface to be etched; or an etchant spraying step: spraying small drops of the etching agent onto the surface to be etched in an imaging pattern by first spraying of an ink-jet printer; solvent spraying: and spraying solvent droplets in an imaging pattern to the surface to be etched by second spraying of the ink-jet printer to mix with the etchant and chemically react to form an etching pattern on the surface to be etched. The invention has the advantages of simplified process, reduced time consumption and reduced cost.

Description

Etching method using inkjet printing and inkjet printer for the etching method

Technical Field

The invention relates to the technical field of etching, in particular to an etching method using ink-jet printing and an ink-jet printer for the etching method.

Background

At present, the etching of metal materials is generally realized by adopting a silk-screen etching mode combining silk-screen printing and metal etching, wherein the silk-screen printing refers to that a silk screen is used as a plate base and a silk screen printing plate with pictures and texts is manufactured by a photosensitive plate making method. The silk-screen printing is composed of five major elements, namely a silk-screen printing plate, a scraper plate, ink, a printing table and a printing stock, and the printing is carried out by utilizing the basic principle that meshes of image-text parts of the silk-screen printing plate can be permeated by the ink and meshes of non-image-text parts can not be permeated by the ink. When printing, ink is poured into one end of the screen printing plate, a scraper plate is used for applying a certain pressure to the ink position on the screen printing plate, meanwhile, the scraper plate moves towards the other end of the screen printing plate at a constant speed, and the ink is extruded onto a printing stock from meshes of the image-text part by the scraper plate in the moving process. The screen printing belongs to orifice plate printing, and during printing, the printing ink is transferred to a printing stock through meshes of an image-text part by extrusion of a scraper to form the image-text same as an original manuscript.

Carry out the metal etching after the stock formation of metal material treats the sculpture pattern through screen printing, need just can clear away clean metal material's surface impurity through two washing processes to acidizing fluid and net washing water after the metal etching, not only the process is consuming time, and the produced waste liquid of washing process can the polluted environment if direct emission moreover, and if purification treatment then need use alkali neutralization has increased extra cost, has wasted manpower and materials.

Therefore, it is desirable to provide an etching method using inkjet printing and an inkjet printer for the etching method, which are simplified in process, reduced in time consumption, and reduced in cost.

Disclosure of Invention

The present invention has been made in view of the above-mentioned disadvantages of the prior art, and to achieve an object of the present invention, there is provided an etching method using inkjet printing, comprising the steps of: a substrate providing step: providing a substrate comprising a metal material having a surface to be etched; solvent spraying: spraying droplets of a solvent onto a surface to be etched in an imagewise pattern by a first spray of an ink jet printer, the etchant spraying step: spraying droplets of the etchant in an imaged pattern toward the surface to be etched by a second spray of the ink jet printer to mix with the solvent and chemically react to form an etched pattern on the surface to be etched; or an etchant spraying step: spraying small drops of the etching agent onto the surface to be etched in an imaging pattern by first spraying of an ink-jet printer; solvent spraying: and spraying solvent droplets in an imaging pattern to the surface to be etched by second spraying of the ink-jet printer to mix with the etchant and chemically react to form an etching pattern on the surface to be etched.

Further, the etchant includes one or more of: hypochlorous acid or/and hypochlorite, permanganic acid or/and permanganate, perchloric acid or/and perchlorate, dichromic acid or/and dichromate, cupric salt, ferric salt, peroxide or/and a mixture of peroxide and acid, wherein the acid is inorganic acid or/and organic acid, a mixture of peroxide and complexing agent, sulfur simple substance comprising nano-scale sulfur dispersion liquid and sulfur solution, and polysulfide comprising inorganic polysulfide and organic polysulfide.

Further, the hypochlorite salt comprises sodium hypochlorite, calcium hypochlorite or potassium hypochlorite, the permanganate salt comprises potassium permanganate, the perchlorate salt comprises sodium perchlorate or potassium perchlorate, the dichromate salt comprises potassium dichromate, the divalent copper salt comprises copper acetate, copper nitrate or copper sulfate, the trivalent iron salt comprises ferric nitrate, ferric chloride or ferric sulfate, and the peroxide comprises sodium peroxide, hydrogen peroxide, organic peroxide, calcium peroxide or potassium peroxide.

Further, the solvent comprises one or more of monohydric alcohol, dihydric alcohol, polyhydric alcohol, alcohol ether, ether compound, ketone compound and aldehyde compound.

Further, the monohydric alcohol includes methanol, ethanol or isopropanol, the dihydric alcohol includes ethylene glycol or propylene glycol, and the alcohol ether includes ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, propylene glycol propyl ether or diethylene glycol ethyl ether.

Further, the etching method further comprises the following steps: spraying an additive: a third jet by the ink jet printer ejects droplets of the additive in an imagewise pattern toward the chemically uncompleted mixture of etchant and solvent.

Further, the additive comprises one or more of a surfactant, a defoaming agent, a pH regulator, a viscosity regulator and a soluble resin.

Further, the etching method further comprises the following steps: a printing head moving step: and the spray heads for spraying the solvent, the etchant and the additive move in sequence towards the direction far away from the surface to be etched so as to correspondingly carry out second spraying and third spraying.

To achieve another object of the present invention, there is also provided an inkjet printer for use in the etching method, wherein the etching method is any one of the etching methods, the inkjet printer including a frame for supporting and fixing the substrate and a controller for controlling ejection of the inkjet printer.

Further, the ink-jet printer includes a head for ejecting and a gas-liquid separation film provided adjacent to the head.

The invention has the beneficial effects that: the etching method of ink-jet printing is used for spraying the solvent and the etchant twice without adopting two washing procedures of acid liquor and net washing water in the prior art, thereby simplifying the procedures, reducing the time consumption and the cost and being beneficial to protecting the environment. The ink jet printer used for the etching method can achieve an excellent etching effect by taking advantage of high-resolution printing while realizing the etching method.

Drawings

FIG. 1 is a schematic flow chart of an etching method using ink-jet printing according to the present invention;

FIG. 2 is a schematic flow chart of another etching method using ink jet printing according to the present invention;

FIG. 3 is a schematic flow diagram corresponding to FIG. 1 with the addition of a solvent spray step;

fig. 4 is a schematic flow diagram corresponding to fig. 2 with the addition of a solvent spray step.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that any combination of the embodiments or technical features described below can be used to form a new embodiment without conflict.

Referring to fig. 1 and 2, the present invention provides an etching method using inkjet printing, the etching method including the steps of: a substrate providing step S10, a solvent spraying step and an etchant spraying step, wherein in the substrate providing step S10, a substrate including a metal material having a surface to be etched is provided, the metal material may be copper, aluminum, titanium, tungsten, or the like, the substrate may be other material than the metal material, that is, the metal material is fixed on the substrate, and the two are separate structures, and in addition, the substrate may be the above metal material as a whole, and then the two are an integral structure. Compared with the traditional screen printing technology, the ink-jet printing technology has the advantages of simple process, high printing resolution, less material waste and the like. In the ink jet printer, the ink jet head is controlled to eject ink droplets onto a printing medium to print images or characters. According to different printing modes, ink-jet printing is divided into scanning type printing and one-pass type printing, wherein a nozzle is arranged on a printing trolley, the printing trolley reciprocates to spray ink drops onto a printing medium, and the printing medium moves in a stepping mode. In one-pass printing, the nozzle is mounted on the printing module, the printing module is fixed, and the nozzle performs ink-jet printing on the printing medium continuously conveyed below the nozzle. The etching method using inkjet printing of the present invention utilizes an inkjet printer to eject solvent, etchant, and even additive, so that the ejection of droplets of solvent, etchant, and even additive can be controlled to form an image pattern by referring to the existing inkjet printer for controlling the ejection of ink droplets, and further description thereof is omitted. The solvent spraying step and the etchant spraying step may take two different orders, and the solvent and the etchant may be stored in corresponding different cartridges, respectively, and in one embodiment, the solvent spraying step S20 sprays droplets of the solvent onto the surface to be etched in an imagewise pattern by a first spray of an inkjet printer, and the etchant spraying step S30 sprays droplets of the etchant onto the surface to be etched in an imagewise pattern by a second spray of the inkjet printer to mix and chemically react with the solvent to form an etched pattern on the surface to be etched. In another embodiment, the etchant spraying step S20 sprays the etchant droplets in an imagewise pattern onto the surface to be etched by a first spray of an inkjet printer, and the solvent spraying step S30 sprays the solvent droplets in an imagewise pattern toward the surface to be etched by a second spray of an inkjet printer to mix and chemically react with the etchant to form an etched pattern on the surface to be etched. It is known that the imaged pattern corresponds to the etched pattern. Therefore, as described above, the etching method using inkjet printing according to the present invention can spray the solvent and the etchant in different orders twice by using inkjet printing in a high resolution imaging pattern manner, thereby avoiding two washing processes in the prior art, simplifying the processes, and avoiding the hidden danger that the waste liquid generated in the washing process pollutes the environment if being directly discharged.

Preferably, the etchant includes one or more of: hypochlorous acid or/and hypochlorite, permanganic acid or/and permanganate, perchloric acid or/and perchlorate, dichromic acid or/and dichromate, cupric salt, ferric salt, peroxide or/and a mixture of peroxide and acid, wherein the acid is inorganic acid or/and organic acid, a mixture of peroxide and complexing agent, sulfur simple substance comprising nano-scale sulfur dispersion liquid and sulfur solution, and polysulfide comprising inorganic polysulfide and organic polysulfide.

Specifically, the hypochlorite salt includes sodium hypochlorite, calcium hypochlorite or potassium hypochlorite, the permanganate salt includes potassium permanganate, the perchlorate salt includes sodium perchlorate or potassium perchlorate, the dichromate salt includes potassium dichromate, the divalent copper salt includes copper acetate, copper nitrate or copper sulfate, the trivalent iron salt includes ferric nitrate, ferric chloride or ferric sulfate, and the peroxide includes sodium peroxide, hydrogen peroxide, organic peroxide, calcium peroxide or potassium peroxide. In addition, the complexing agent includes ammonium salts, ammonia water, organic amine compounds or EDTA and salts thereof.

Preferably, the solvent comprises one or more of monohydric alcohol, dihydric alcohol, polyhydric alcohol, alcohol ether, ether compound, ketone compound and aldehyde compound.

Specifically, the monohydric alcohol includes methanol, ethanol or isopropanol, the dihydric alcohol includes ethylene glycol or propylene glycol, and the alcohol ether includes ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, propylene glycol propyl ether or diethylene glycol ethyl ether. Additionally, the polyol includes glycerol.

With further reference to fig. 3 and 4 in combination, in order to further improve the etching effect of the mixture of the etchant and the solvent chemically reacted with each other, the etching method using inkjet printing according to the present invention further includes an additive spraying step S40 of spraying droplets of the additive in an imagewise pattern toward the mixture of the etchant and the solvent whose chemical reaction was not completed by the third spraying of the inkjet printer. It is understood that the additive spraying step S40 is performed after the solvent spraying step S30 or the etchant spraying step S30 corresponding to a different order of the solvent spraying step and the etchant spraying step.

Preferably, the additive comprises one or more of a surfactant, a defoamer, a pH adjuster, a viscosity adjuster, or a soluble resin.

As a further improvement, the etching method using ink-jet printing according to the present invention further includes a print head moving step S50 (not shown), in which step S50, the spray head for spraying the solvent, the etchant and the additive is sequentially moved in a direction away from the surface to be etched to perform the second spray and the third spray, that is, after the first spray for spraying the solvent or the etchant is performed and before the spray for spraying the solvent or the etchant is performed as the second spray, the spray head is moved in a direction away from the surface to be etched by a certain distance, so as to prevent a certain amount of corrosive volatile substances possibly generated by the chemical reaction of the mixture of the solvent and the etchant from acting on the spray head, and after the second spray is performed and before the spray additive for the third spray is performed, the spray head is further moved in a direction away from the surface to be etched by a certain distance, so as to prevent the solvent, the etchant from acting on the spray head, The greater amount of corrosive volatile substances that may be generated by the chemical reaction of the etchant and the additive mixture, which are generally in gaseous form, is applied to the head, it being understood that the respective distances of movement are within the range of the ink-jet printer that ensures that the solvent, the etchant and the additive are ejected in an imagewise pattern onto the surface to be etched, so that the head is well protected against corrosion of the head, in particular of the piezoelectric element.

The invention also provides an ink-jet printer for the etching method, the etching method is the etching method using the ink-jet printing, the ink-jet printer comprises a frame and a controller, the frame is used for supporting and fixing the substrate, the controller is used for controlling the ink-jet printer, particularly the jet of the spray head, the jet comprises a first jet and a second jet or a first jet, a second jet and a third jet, and the controller can be a CPU, a PLC and the like, therefore, the ink-jet printer has the advantages brought by any etching method, and the description is omitted.

As a further improvement, the ink jet printer includes a head for ejecting two sprays including a solvent and an etchant or three sprays including a solvent, an etchant and an additive, and an air-liquid separation film disposed adjacent to the printing head, which allows the various sprays ejected from the head to pass and fall on a surface to be etched but prevents the gaseous corrosive volatile substances such as those described above from passing to act on the head, and therefore, the head, particularly the piezoelectric element, can be prevented from being subjected to a corrosive action.

It should be noted that the time length for implementing each step and the time length between two steps ensure that the solvent and the etchant or the solvent, the etchant and the additive can be mixed and chemically reacted to obtain the desired etching effect. The selection and ratio of the solvent, the etchant and the additive can be determined by those skilled in the art according to the material and pattern of the metal.

A detailed description of known methods is omitted herein for the sake of brevity. In the above embodiments, several specific steps are described and shown as examples. However, the method processes of the present invention are not limited to the specific steps described and illustrated, and those skilled in the art can make various changes, modifications and additions, or change the order between the steps, or perform several steps simultaneously, after comprehending the spirit of the present invention.

The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are within the protection scope of the present invention.

Claims

1. An etching method using ink-jet printing, characterized in that: the method comprises the following steps:

a substrate providing step: providing a substrate comprising a metal material having a surface to be etched;

solvent spraying: spraying solvent droplets onto the surface to be etched in an imagewise pattern by a first spray of an ink jet printer, the etchant spraying step: spraying droplets of an etchant in the imaged pattern toward the surface to be etched by a second spray of the inkjet printer to mix with the solvent and chemically react to form an etched pattern on the surface to be etched; or

And (3) etching agent spraying: spraying small drops of an etchant onto the surface to be etched in an imaging pattern by first spraying of the ink-jet printer; solvent spraying: and spraying solvent droplets to the surface to be etched in the imaging pattern by second spraying of the ink-jet printer to mix with the etchant and chemically react to form an etching pattern on the surface to be etched.

2. The etching method according to claim 1, wherein:

the etchant includes one or more of: hypochlorous acid or/and hypochlorite, permanganic acid or/and permanganate, perchloric acid or/and perchlorate, dichromic acid or/and dichromate, divalent copper salt, trivalent iron salt, peroxide or/and a mixture of peroxide and acid, wherein the acid is inorganic acid or/and organic acid, a mixture of peroxide and complexing agent, sulfur simple substance comprising nano-scale sulfur dispersion liquid and sulfur solution, and polysulfide comprising inorganic polysulfide and organic polysulfide.

3. The etching method according to claim 2, wherein:

the hypochlorite includes sodium hypochlorite, calcium hypochlorite or potassium hypochlorite, the permanganate includes potassium permanganate, the perchlorate includes sodium perchlorate or potassium perchlorate, the dichromate includes potassium dichromate, the cupric salt includes copper acetate, copper nitrate or copper sulfate, ferric salt includes ferric nitrate, ferric chloride or ferric sulfate, the peroxide includes sodium peroxide, hydrogen peroxide, organic peroxide, calcium peroxide or potassium peroxide.

4. The etching method according to claim 1, wherein:

the solvent comprises one or more of monohydric alcohol, dihydric alcohol, polyalcohol, alcohol ether, ether compounds, ketone compounds and aldehyde compounds.

5. The etching method according to claim 4, wherein:

the monohydric alcohol comprises methanol, ethanol or isopropanol, the dihydric alcohol comprises ethylene glycol or propylene glycol, and the alcohol ether comprises ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, propylene glycol propyl ether or diethylene glycol ethyl ether.

6. The etching method according to any one of claims 1 to 5, wherein: also comprises the following steps:

spraying an additive: ejecting additive droplets in the imaged pattern by a third ejection of the inkjet printer toward the mixture of the etchant and the solvent in which the chemical reaction is incomplete.

7. The etching method according to claim 6, wherein:

the additive comprises one or more of a surfactant, a defoaming agent, a pH regulator, a viscosity regulator and a soluble resin.

8. The etching method according to claim 6, wherein: also comprises the following steps:

a printing head moving step: and the spray heads for spraying the solvent, the etchant and the additive move in sequence towards the direction far away from the surface to be etched so as to correspondingly perform the second spraying and the third spraying.

9. An ink jet printer for use in an etching process, characterized by: the etching method according to any one of claims 1 to 8, wherein the inkjet printer includes a frame for supporting and holding the substrate and a controller for controlling ejection of the inkjet printer.

10. The inkjet printer of claim 9, wherein:

the ink jet printer includes a nozzle for the ejection and a gas-liquid separation membrane disposed adjacent to the nozzle.