TWI281519B - Electrolyzing polishing process system and method thereof - Google Patents

Abstract

This invention is about an electrolyzing polishing process system and a method thereof. The system comprises an electrolyte tank, a metallic sheet whose thickness is 0.5 mm to 0.005 mm, an electrode part, and a power supply. The method comprises a pre-process procedure, an electrolyzing polishing procedure, a post-process procedure, and an examination procedure. At the gap between the metallic sheet and the electrode part, the tips on the metallic sheet will preferentially form a reversed electroplating reaction because of bigger current density that makes the tips depart from the metallic sheet, so the surface roughness of the first surface of the metallic sheet can be improved. This invention is suitable for the surface treatment of a flexible metallic sheet with a big area. This invention is a continuous and non-contact process causing no residual stress, and can bilaterally process a workpiece at one time.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrolytic polishing processing system and method, and more particularly to an electrolytic polishing processing system and method using a reverse plating reaction, which is suitable for a large area. The surface treatment of flexible metal, continuous treatment, residual stress without contact treatment and the advantages and effects of simultaneous double-sided treatment. [Prior Art] ^ The flexible display is the most advanced and extremely popular item in the world. If the metal foil board (meta 1 - f 〇i 1 ) is the substrate of the soft display, it is a better choice. Of course, it is also possible in other fields to use such a conductive sheet having a good surface roughness, a large area, and an extremely thin surface. However, there are many ways to surface the surface of a large-area and extremely thin conductive sheet. In the conventional way of improving the surface roughness, it is mainly direct contact processing or processing, such as grinding, contact polishing. However, for a conductive sheet having a thickness of less than 55 mm, the main problem of the direct contact type is that the conductive sheet is destroyed when the contact force is too large, and the surface roughness is improved at the same time as the contact processing, but also Residue should be a problem. ~ ^ 一一—·* Secondly, the second time can only be performed on one side. If it is not possible, double-sided processing is performed, so it cannot be double-sided at the same time. ..., / 9 In addition, the traditional contact treatment is mostly one piece by piece, and it cannot be processed continuously, so the processing speed is slow. Therefore, it is necessary to develop new technologies to solve the above problems. SUMMARY OF THE INVENTION The main object of the present invention is to provide an electrolytic polishing processing system

Page 5 1281519 V. Inventive Note (2) and method, using the principle of reverse plating reaction, is suitable for the surface treatment of large-area flexible metal.

The second aspect of the present invention is to provide an electrolytic polishing treatment and a method in which a continuous treatment is carried out in a town. A further object of the present invention is a method and method for the residual stress of the contactless treatment. A further object of the present invention is to provide an electrolytic polishing treatment system and method which can simultaneously treat both sides . /,,, ' / The present invention provides an electrolytic polishing processing system, comprising: an electrolyte bath containing an electrolyte therein; ^ · a metal foil having a first surface to be treated and a second The metal foil is flexible and has a thickness of between 〇5 mm and 0.001 mm, and the metal foil is rolled and moved by the moving device; ° an electrode portion, the electrode portion Forming a predetermined electrolytic gap between the first surface of the metal foil and filling the electrolyte; a power supply portion having a positive electrode and a negative electrode, the metal foil being connected to the positive electrode, the electrode Connected to the negative electrode; _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ A plurality of tip portions preferentially generate a plating reaction due to a large current density and are separated from the metal foil, thereby improving the surface roughness of the first surface of the metal foil. The method of the invention comprises the following steps:

.1281519 V. Description of invention (3). Electrolytic polishing step, 3. Post-treatment step 1 · Pre-processing step, 2 zen and 4, detection steps. The above objects and advantages of the present invention are not difficult. The detailed description and the attached ® are well understood. 4 Selected Embodiments [The present invention will be described in detail with reference to the drawings. The present invention is an electropolishing virtual king & part, dum m system and method. Regarding the system, the reference numeral 'is mainly includes an electrolytic solution tank 10, a metal crucible 20, an electrode portion 30, and a power supply portion 4A. The electrolyte tank 1 is filled with an electrolyte η. In practice, the electrolyte 11 is selected from the group consisting of sulfuric acid, phosphoric acid, glycerin, nitric acid, hydrochloric acid, lactic acid, citric acid, chromic acid, phosphorous acid, and an aqueous solution of an organic acid. The metal foil 20 has a first surface 21 to be treated and a second surface 22, and the metal foil 20 has flexibility and has a thickness 0 between 0·5 mm and 〇〇·〇〇5 mm. The metal foil 20 is wound in a roll shape and is movable by a first driving device 23. Of course, the metal foil 20 can also be integrated with another non-metal substrate 25 to form a composite thin sheet, as shown in the tenth figure. With respect to the portion of the electrode portion 30, the electrode portion 30 and the first surface 21 of the metal foil 20 have a predetermined electrolytic gap G (as shown in the second figure) filled with the electrolyte 1丨. The electrolysis gap G is preferably vertical or inclined to facilitate the gas or bubbles generated by the reaction to drift upward. The power supply unit 40 has a positive electrode 41 and a negative electrode 42.

Page 7 .1281519 V. DESCRIPTION OF THE INVENTION (4) The metal foil 20 is the negative electrode 42. Thereby, the plurality of projections 21 have a tip portion 2 11A, and the tip end portion 211A is made to have a surface roughness of the metal foil 20. The aforementioned power supply is powered. Due to the reaction electricity, there is more connection to the positive electrode 4 1, and the electrode portion 3 is connected to the first surface 21 not passing through the electrolytic gap G to have 1 (see the third figure), each convex The outlet portion 211 has a root portion 211B, and a plurality of flow densities are large at the electrolysis gap g, and a reverse plating reaction is preferentially generated to be detached to improve the first surface 21 supply portion 40 of the metal foil 2, 5毫米至卷状状。 The first surface of the first surface of the first surface is 0. 5mm to the roll And passing through an electrolysis gap G, each of the protrusions 2 11 is divided into electrode portions 30, and the electrode has the predetermined electrolysis chamber and is the electrolysis of the present invention. The following steps are involved in the present invention: The pre-processing step 61: a quasi-electrolyte 11; a metal foil 20 21 and a second surface 22, the thickness τ between the metal 0. 0 05 mm, the metal driving device 23 is driven and movable, a surface 21 having a plurality of individual ones The tip portion 211a and the one portion 30 and the first gap G' of the metal foil 2' are filled with the optical processing system. For the part of the method, please refer to the ninth figure, which is provided with an electrolyte tank 10, which is contained therein, and has a sheet 20 having a sheet 20 system, the unexposed portion 2 11 portion 211B; 1 with electrolyte 11; a power supply unit 40

1281519 V. The invention has a positive electrode 41 and a negative electrode 42 connected to the positive electrode 41, and the electrode portion 30 is connected to the negative electrode 42; 2. Electrolytic polishing step 62: moving the metal foil 20, at the electrolytic gap G, the plurality of tip portions 211A preferentially generate a reverse plating reaction and get detached from the metal foil 2 因 due to a large current density, thereby improving the metal The surface roughness of the first surface 21 of the sheet 20; 3. Post-processing step 63: cleaning the treated metal foil 20, followed by drying; 4. Detection step 64: surface roughness of the treated metal foil 20 Measurement, chemical composition analysis and corrosion resistance testing. However, this fourth step is a non-essential step and can be omitted in practice. For the principle of operation of the present invention, please refer to the third to eighth figures. First, referring to the third and fourth figures, the first surface 21 of the metal foil 20 has a plurality of protrusions 2Π, each of which has a plurality of protrusions 2 The projection 211 has a tip end portion 21A and a portion 211B. When the metal foil 20 passes through the electrolytic gap G, for convenience of explanation, in the fourth figure, a first point P1 and a first point are respectively set at the outermost end, the middle portion and the inner portion of the tip end portion 2 11 A. Two points P2, one. Third point P3. Next to the root 211B, a fourth point P4 is provided. Next, the distance from the first point P1 to the electrode portion 30 is a first distance L1, and the distance from the fourth point P4 to the electrode portion 30 is a second distance L2. At this time, the first distance L1 is smaller than the second distance l 2 , so the current density at the first point p 1 of the tip end portion 2 11 A is large (meaning larger at the fourth point P4), and reverse plating occurs. The reaction is also faster.

1281519 V. INSTRUCTIONS (6) ----- Please refer to the fifth and sixth figures. After the reverse plating reaction is started, the metal of the gold plate 20 reacts with the acid radical in the electrolyte 11 to form a metal-containing acid radical. The viscous layer of the polymer is 50. More strictly speaking, this more & adjust the slip 50 to form a sticky layer 5 1 which is closer to the metal enamel film (the viscosity is better than the words, oh ^ and the outer viscous layer 52 (low viscosity), at the same time, There is a gas or a bubble, and in the portion of the metal foil 20, hydrogen gas is generated, and close to the electrode portion 3, the gas is generated, which is exactly the opposite of the electrolytic reaction. 77 In the sixth figure, It can be seen that part of the tip end portion 2Ua is no longer visible, and the first distance L1 becomes the distance from the second point P2 to the electrode portion 3〇, and is still at the second distance L2. — /, Please refer to the seventh figure and In the eighth figure, the reverse plating reaction continues, and more of the tip portion 211A is removed (due to the higher current density), and the first distance is further reduced by the distance from the second point P 3 to the electrode portion 30, but Still smaller than the second distance 2 Finally, the protrusion 2 11 becomes smoother, so that the surface roughness of the first surface 21 of the entire metal foil 20 is effectively improved. In summary, the advantages of the present invention And the efficacy can be summarized as: [1] suitable for the surface treatment of large-area flexible metals. Due to the invention Lu Cailian When the width of the metal foil is increased, the metal foil can be processed in theory as long as the electrode portion is enlarged, so that the large area [2] can be continuously processed. The present invention can be continuous and extremely thin. Metal thin 20 continuous reaction treatment (this is a reverse plating reaction), especially a metal box plate suitable for processing a large-sized flexible display

Page 10 1281519

(metal-foil) or similar flexible 暮 [3] residual stress without contact treatment. Metal foil. The cutting or grinding tool is in direct contact with the workpiece to be processed because the invention is not conventional. Stress, and at the same time, no surface damage. Surface, so there is no residue _ [4] can be double-sided at the same time. As long as the electrodes are provided in the ^:, the double-sided processing can be performed at the same time: the two sides of the force sheet are not easy to be processed on both sides. In the case of fully overcoming the prior art, the above-mentioned purpose, patent application, can be achieved by the above detailed description. It will be apparent to those skilled in the art that the invention has been in compliance with the provisions of the patent law and

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view of a portion of a system of the present invention. FIG. 2 is a schematic cross-sectional view of a portion of the system of the present invention. 4 is a schematic cross-sectional view of a process of the present invention. FIG. 5 is a schematic view of a process 2 of the present invention. FIG. 6 is a cross-sectional view showing a process 2 of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 8 is a cross-sectional view of a process 3 of the present invention. FIG. 9 is a flow chart showing a part of the method of the present invention. FIG. 10 is a schematic view showing a metal foil of the present invention in a composite sheet shape. 10 electrolyte tank 11 electrolyte 20 foil 2 1 first surface 211 projection 2 11 A tip portion 11 11 B root 2 2 second surface 23 first drive device 25 non-metal substrate 3 0 — 4 0 power supply unit > 41 positive electrode 4 2 negative electrode 5 0 viscous layer 5 1 inner viscous layer 5 2 outer viscous layer 6 1 pre-treatment step 62 electropolishing step 6 3 post-processing step 6 4 detection step P1 first Point P 2 second point P3 third point

Page 12 1281519 L1 first distance T thickness Graphical description P4 fourth point L 2 second distance G electrolytic gap Φ ΙΪΙΒί Page 13

Claims (1)

1281519 VI. Patent Application No. 1 · An electrolytic polishing processing system comprising: an electrolyte bath containing an electrolyte therein; a metal foil having a first surface to be treated and a second surface, the metal The sheet is flexible and has a thickness of between 0.5 mm and 0.05 mm. The foil is rolled and moved by a first driving device; an electrode portion, the electrode And a predetermined electrolytic gap between the first surface and the first surface of the metal foil filled with the electrolyte; a power supply portion having a positive electrode and a negative electrode, the gold > a positive electrode, the electrode portion is connected to the negative electrode; thereby, the first surface that has not passed through the electrolytic gap has a plurality of protrusions, and each of the protrusions has a tip end portion and a portion, respectively At the electrolysis gap, a plurality of tip portions preferentially generate a reverse plating reaction due to a large current density and are separated from the metal foil, thereby improving the surface roughness of the first surface of the metal foil. 2. The electropolishing treatment system according to claim 1, wherein the electrolyte is selected from the group consisting of sulfuric acid, acid filling, glycerin, kappa acid, hydrochloric acid I, lactic acid, citric acid, chromic acid, phthalic acid. One of the aqueous solutions of organic acids. 3. The electrolytic polishing processing system of claim 1, wherein the power supply unit is continuously powered. 4. The electrolytic polishing processing system of claim 1, wherein the power supply unit is intermittently powered. Page 14 1281519 Sixth, the scope of the patent application steps: one of the contents of the flexible one of the metal can have an end and a part; a surface between the solution; a power supply pole, the metal foil is connected to the negative electrode Having an electric first surface and having a sheet-like movement 'the plurality of convex 5v two kinds of electropolishing treatment methods, including the following - - provincial processing steps: preparing an electrolyte tank, dissolving y - metal foil, having And a second surface, the metal foil having a thickness of between 0.5 mm and 〇〇·〇〇5 mm, r being rolled and being carried by a first driving device without passing through a first surface of an electrolytic gap Each of the protrusions has a tip φ-electrode portion, and a predetermined electrolytic gap of the metal foil, which is filled with the lightning portion, and has a positive electrode and a negative 1 system connected to the positive portion Electrode, the electrode part--electrolytic polishing step: moving the metal foil, at the electrolysis gap, a plurality of tip portions preferentially generate a reverse plating reaction due to a large current density and are separated from the metal foil The surface roughness of the first surface of the metal foil is improved; 3. Post-processing step: the treated thin film is washed, and then dried. The electropolishing treatment method according to claim 5, wherein the method further comprises the following steps: 4. Testing step: measuring the surface roughness of the treated metal foil, chemical composition analysis and anti-corrosion testing. Page 15