CN110816138A - Preparation method of metal intaglio printing - Google Patents
Preparation method of metal intaglio printing Download PDFInfo
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- CN110816138A CN110816138A CN201911156255.6A CN201911156255A CN110816138A CN 110816138 A CN110816138 A CN 110816138A CN 201911156255 A CN201911156255 A CN 201911156255A CN 110816138 A CN110816138 A CN 110816138A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B44—DECORATIVE ARTS
- B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
- B44C1/00—Processes, not specifically provided for elsewhere, for producing decorative surface effects
- B44C1/24—Pressing or stamping ornamental designs on surfaces
Abstract
The invention discloses a preparation method of a metal intaglio, which comprises the following steps: plastic package, punching, imprinting, blanking, color printing, coating protection, secondary plastic package and punching. Before processing, a layer of plastic film is compounded on the metal sheet, positioning holes are formed in the plastic film, and positioning is carried out through the positioning holes in the stamping process, so that accurate positioning can be achieved. The method is characterized in that a positioning frame is arranged on a working platform of the color press, a metal sheet is placed in the positioning frame during color printing, analog printing is firstly carried out before printing to detect the error between the positioning frame and a printed pattern position, and then the printing position setting on the color press is adjusted according to the error, so that the position deviation between the image-text lines of the color printing and the image-text lines of the metal sheet impression is ensured to be lower than 100 mu m during printing, and the finished product has high aesthetic degree and cannot fade after being directly printed on the metal film and being protected by a coating film and being subjected to plastic packaging.
Description
Technical Field
The invention relates to the technical field of metal intaglio preparation, in particular to a preparation method of a metal intaglio.
Background
At present, intaglio painting is an important class of visual art, and is a new art form produced by combining painting and printing processes. The concept of the modern intaglio is mainly the artistic works created by artists through plate making and printing procedures, and specifically, the artistic works are usually created by carving, scraping, sticking, drawing, corroding, and photosensitive plate making on the plate surfaces of wood, stone, hemp glue, copper, zinc and other planes with a knife or chemicals to form patterns, so that the intaglio has a very high artistic value and is often expensive to sell, and when the plate surfaces are made of metal materials, the intaglio can be called as a metal intaglio.
The existing metal intaglio printing is mostly formed by adopting an embossing mode, and then the surface of the metal intaglio printing is printed according to the requirement. For example, chinese patent publication No. CN106274218A discloses a process for making noble metal sheet stereograph, ornament, and jewelry, which comprises the steps of making noble metal sheet, cutting, printing patterns on the sheet or protective film, sticking film, cutting, hot-pressing for shaping, and serially attaching.
In the above patent, the metal painting is formed by stamping, which is applicable to the metal painting with a thick printing plate, but the metal painting with a printing plate thickness of 50-100 μm has the following problems in the actual painting process: because the layout is too thin, wrinkles are easy to occur in the process of making a picture, and particularly for the metal intaglio picture adopting the stamping process and the color printing process, the requirements of accurate positioning exist in the two steps of stamping and color printing, so that the wrinkles can not occur on the layout while the accurate positioning is difficult to ensure in the actual operation process, and the yield of the metal picture with the layout thickness of 50-100 mu m is very low.
Based on this, three solutions are proposed in the market at present for solving the problem, the first is to directly imprint patterns on a film after laminating films on two sides and perform color printing on the surface of the film, and in the method, due to the fact that the imprinting and the color printing are both on the film, the problems of insufficient aesthetic measure, easy fading and pattern damage exist, and meanwhile, the method is not a metal intaglio in the practical sense.
The second is to place the metal foil in two layers of thin paper or film, then to use the concave-convex model with the calligraphy and painting pattern, to press film on the two layers of thin paper or film with metal foil, to peel off the two layers of thin paper or film, to generate concave-convex calligraphy and painting pattern on the front and back sides of the middle metal foil, and to print color on the metal painting. The method is successful in the process of forming the intaglio painting, can effectively reduce wrinkles, but is difficult to position, is not suitable for imprinting high-precision patterns due to the existence of thin paper/thin film on the surface, cannot improve the problems of positioning and wrinkle rate in the process of color printing, cannot cause any deformation and wrinkles on the metal painting due to the imprinted reasons, and increases the difficulty of the color printing process and the subsequent film laminating process.
The third is a second modification, which is to apply a film and then print the film with color after completing the imprinting, and this method can improve the difficulty of color printing in the second method, but has a problem of easy occurrence of leg color.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a preparation method of a metal intaglio printing, which can greatly reduce the difficulty of imprinting and color printing of the metal printing with the plate thickness of 50-100 mu m and has no problem of fading.
The technical purpose of the invention is realized by the following technical scheme:
a preparation method of a metal intaglio printing comprises the following steps:
s1, plastic packaging, namely, hot-pressing and attaching the metal sheet and a layer of plastic film, wherein the length and the width of the metal sheet are both larger than those of the metal intaglio painting finished product, and the length and the width of the plastic film are both larger than those of the metal sheet;
s2, punching, namely placing the metal sheet on a punching platform, aligning the metal sheet to be basically aligned with an alignment frame on the punching platform, and then punching a plurality of positioning holes in a plastic film outside the metal sheet;
s3, stamping, namely, placing the metal sheet on a stamping die with the surface facing downwards, positioning the metal sheet through the matching of a positioning hole and a positioning guide pillar on the stamping die, and then transferring the image-text lines on the stamping die onto the metal sheet through the action of pressure;
s4, blanking, namely cutting off redundant rim charge of the metal sheet and the plastic film after positioning through the positioning hole;
s5, color printing, comprising:
s5.1, installing a positioning frame, selecting a corresponding positioning frame according to the size of the metal intaglio, and installing the positioning frame on a working platform of the color press in a tiled mode;
s5.2, simulating printing, and starting a color press to print a peripheral frame of the printed pattern according to the set printing position, wherein the peripheral frame has the same size as the metal intaglio;
s5.3, measuring, namely comparing each positioning frame with the corresponding peripheral frame and measuring deviation;
s5.4, adjusting a path, and adjusting a printing position set in the color press according to the measured deviation amount;
s5.5, printing, namely placing the metal sheet of the metal intaglio painting after blanking in the S4 in a positioning frame with the upward surface, and starting a color press to print;
s6, coating protection, namely soaking the metal sheet subjected to the color printing treatment in a metal protective agent aqueous solution to form a protective film on the surface of the metal surface to complete the coating treatment;
s7, secondary plastic package, namely, hot-pressing and attaching the metal surface of the metal intaglio to a layer of plastic film;
and S8, punching, and cutting off the redundant rim charge of the secondary plastic package.
So set up, before processing, compound one deck plastic film on the foil earlier, so, can increase holistic thickness simultaneously can effectively avoid taking place the problem of fold in the later stage course of working through utilizing the not flexible characteristic of plastic film, consequently, only need guarantee not take place the fold in the hot pressing in-process can. On this basis, set up the location of locating hole in the later stage operation process of being convenient for on plastic film, combine the great setting of initial metal film again, can eliminate the error problem in the course of working for do not need very accurate location when making the locating hole, accomplish that the naked eye observes basically accurately can, and at the impression in-process, fix a position through the locating hole, can do the location accuracy.
The method is characterized in that a positioning frame is arranged on a working platform of the color press, a metal sheet is placed in the positioning frame during color printing, analog printing is firstly carried out before printing to detect the error between the positioning frame and a printed pattern position, and then the printing position setting on the color press is adjusted according to the error, so that the position deviation between the image-text lines of the color printing and the image-text lines of the metal sheet impression is ensured to be lower than 100 mu m during printing, and the finished product has high aesthetic degree and cannot fade after being directly printed on the metal film and being protected by a coating film and being subjected to plastic packaging.
More preferably: in the step S1, the plastic film is a transparent film, and the plastic film is made of one or a combination of PET, PVC, and PP; the surface of the plastic film is provided with a layer of hot melt adhesive coating, and the hot melt adhesive is made of EVA, PP, PES, PA or TPU.
So set up, the foil can be observed in the transparent film setting, and its rigidity of film that PET, PVC, PP's material were made is better, has better not easily crooked characteristic.
More preferably: in the step S1, the plastic film is placed on a piece of silicone oil paper with a size larger than that of the plastic film, and the silicone oil paper with a size larger than that of the plastic film is covered on the upper side of the metal sheet.
So set up, the setting of silicone oil paper can be better keep the level and smooth of foil to make things convenient for the separation of foil and plastic packaging machine running roller, avoid taking place the hot melt adhesive adhesion.
More preferably: in step S3, after the metal sheet is placed on the imprint mold, a soft rubber pad is placed on the upper side of the plastic film.
So set up, through the deformation that takes place when the soft cushion pressure-bearing, extension that takes place when at first can by a wide margin reduction foil pressurized, simultaneously, the relief (sculpture) picture and text that can make foil impressed is more clear, have the level.
More preferably: and a red vulcanized paper board is arranged on the upper side of the soft rubber cushion.
So set up, can make foil pressure-bearing atress more even.
More preferably: the soft rubber mat is made of printing rubber cloth, the thickness of the soft rubber mat is 1.5-2mm, and the thickness of the red steel paperboard is 1.5-2 mm.
So set up, through a large amount of experiments discovery, the deformation volume of the printing blanket of above-mentioned thickness when the impression is comparatively suitable, and deformation volume is not big also not little promptly, takes place trace plastic deformation when the pressure-bearing, at red vulcanized paper and the plastic film of cooperation above-mentioned thickness, makes the definition and the stereovision of the relief (sculpture) picture and text that foil impressed better.
More preferably: the step S3 is carried out in an oil press, the working pressure of the oil press is 1000-3000kgf/cm2, the running speed is not higher than 80mm/S, the stroke is not lower than 120mm, and the hot pressing temperature is 150-400 ℃.
According to the arrangement, under the parameter, the soft rubber mat and the red vulcanized paper are matched, so that the definition and the layering of the embossed pictures and texts on the stamped metal sheet are better, and the stamping time is shorter.
More preferably: the pattern engraved on the stamping die in the step S3 is composed of lines with different densities, and the depth of the engraved lines is 40 μm-80 μm.
By the arrangement, the definition and the layering of the embossed patterns on the stamped metal sheet are excellent.
More preferably: when the length of the long edge of the metal sheet is larger than 250mm, the positioning hole is placed on the outer side of the long edge, the shortest distance from the long edge is 10-12 mm, and the shortest distance from the short edge is 2-3 mm; when the length of the long edge of the metal sheet is not more than 250mm, the positioning hole is placed on the outer side of the short edge, the shortest distance from the short edge is 10-12 mm, and the shortest distance from the long edge is 2-3 mm.
By such an arrangement, deformation damage caused by the separation of the metal sheet from the mold can be reduced.
More preferably: a plurality of foot columns which are in one-to-one correspondence with the air suction holes on the working platform of the color press are arranged on the lower side end surface of the positioning frame; the working platform upper berth of color press is equipped with the PVC cushion, be provided with a plurality of dodges of dodging the locating frame on the PVC cushion and dodge the mouth, the edge outside of locating frame is provided with the pressurized frame that thickness is less than the locating frame, the length and the width of dodging the mouth all are greater than the locating frame, just all are less than the pressurized frame.
So set up, realize the location of locating frame in the hole of induced drafting through the socle pegging graft, ensure that its location is accurate, on this basis, through laying of PVC cushion, can live naked whole covers in the hole of induced drafting, and simultaneously, through pressing the spacing locating frame that lives that can be better on the frame of being pressed, and can have better sealed effect, so, can not produce the negative pressure point on the working plane when printing, and then eliminate the influence to printing ink when printing, ensure the accuracy of color printing.
In conclusion, the invention has the following beneficial effects:
the difficulty of impressing and color printing of the metal picture with the plate thickness of 50-100 mu m can be greatly reduced, and the problem of color fading does not exist.
Drawings
FIG. 1 is a process flow diagram of the present example;
FIG. 2 is a schematic structural diagram of the positioning frame installed on the working platform of the color press in the present embodiment;
FIG. 3 is a schematic structural diagram of a positioning frame in the present embodiment;
FIG. 4 is a front view of the positioning frame in the present embodiment;
fig. 5 is a schematic structural diagram of the present embodiment in which the positioning frame and the PVC rubber pad are both mounted on the working platform of the color press.
As shown in the figure, 100, a working platform of a color printer; 110. an air suction hole; 200. a positioning frame; 210. a socle; 220. a pressure frame; 300. PVC rubber mat.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
A preparation method of a metal intaglio printing comprises the following steps:
s1, plastic packaging, namely selecting a metal sheet (the metal sheet can be any one or combination of a silver sheet, a gold sheet, a copper sheet and the like) with a required size and a clean surface according to the size of the metal intaglio, removing static electricity by using a silica roller, and cleaning surface impurities.
The thickness of the metal sheet is 50-100 mu m, particularly 70-80 mu m, the cost is low, the thickness is appropriate, the relief pattern with better definition and layering can be formed, and the length and the width of the metal sheet are both larger than those of a metal intaglio painting finished product.
According to the requirement, a plastic film with a thickness of 50-300 μm is selected, and the length and the width of the plastic film are 10-20 mm longer than those of the metal sheet. The plastic film is a transparent film, and the material of the plastic film is one or a combination of more of PET, PVC and PP. The surface of the plastic film is provided with a layer of hot melt adhesive coating, and the hot melt adhesive is made of EVA, PP, PES, PA or TPU.
And (3) flatly paving the plastic film layer on a piece of silicone oil paper with the size larger than that of the plastic film, wherein the thickness of the silicone oil paper is 100-150 mu m, and the hot melt adhesive coating is placed upwards. Then the metal sheet is laid on the plastic film, and finally, a piece of silicone oil paper with the size larger than that of the plastic film is covered on the upper side of the metal sheet, so that the metal sheet and the plastic transparent film are relatively centered.
After the operation is finished, the metal sheet, the plastic film and the two layers of silicone oil paper are fed into a plastic packaging machine together, and hot-pressing and laminating are carried out under the condition that the hot-pressing temperature is 150-170 ℃.
And S2, punching, namely placing the metal sheet on a punching platform of a lower die of a punching machine, wherein the punching platform is provided with an alignment frame, and the length and the width of the alignment frame are equal to or slightly larger than those of the metal sheet. And (3) righting the metal sheet to enable the metal sheet to be basically aligned with the alignment frame on the punching platform, moving an upper punching die downwards through the punching stroke of a punching machine, simultaneously acting a thimble of the upper punching die and a positioning hole knife edge of a lower die on the plastic film to generate shearing force, and leaving four positioning holes on the surface of the plastic film, wherein the positioning holes are circular and have the diameter of 5-7 mm.
The number of the positioning holes is not limited to four, and the positioning holes can be in any shape such as a polygon, an ellipse and the like.
In addition, the position of the positioning hole has the following specifications: when the length of the long edge of the metal sheet is larger than 250mm, the positioning hole is placed on the outer side of the long edge, the shortest distance from the long edge is 10-12 mm, and the shortest distance from the short edge is 2-3 mm; when the length of the long edge of the metal sheet is not more than 250mm, the positioning hole is placed on the outer side of the short edge, the shortest distance from the short edge is 10-12 mm, and the shortest distance from the long edge is 2-3 mm. The design is significant in reducing deformation damage caused by the separation of the metal sheet from the die.
And S3, stamping, wherein the stamping die used in the process is manufactured through the procedures of initial draft design drawing, image-text transfer printing, laser engraving, chemical etching and the like, the stamping die is made of any one or a combination of a plurality of die materials such as A3 iron plates, 201 stainless steel, 304 stainless steel, 316 stainless steel and the like, and the thickness of the stamping die is 0.5-5 mm. Four positioning guide posts are arranged on the stamping die, the material of the positioning guide posts is any one or combination of a plurality of die materials such as A3 iron plates, 201 stainless steel, 304 stainless steel, 316 stainless steel and the like, the height of the positioning guide posts is 2-3mm, and the positioning guide posts are arranged at corresponding positions of the stamping die in a gluing mode and the like.
Wherein, the pattern carved on the impression mould consists of lines with various densities and densities, and the depth of the carved lines is 40-80 μm.
During stamping, the surface of the metal sheet is placed on a stamping die in a downward mode, positioning is carried out through the matching of the positioning holes and the positioning guide pillars on the stamping die, and then the soft rubber pads and the red vulcanized fiber boards are sequentially placed on the upper side of the plastic film to form a stamping die block group. Wherein the red vulcanized paper is commercially available red vulcanized paper, the size of the red vulcanized paper is larger than that of the imprinting mold, and the thickness of the red vulcanized paper is 1.5-2 mm; the soft rubber cushion is printing rubber cloth, the size is larger than that of the metal sheet, and the thickness of the soft rubber cushion is 1.5-2 mm.
And placing the stamping module group on a pressure-bearing working platform of an oil press, controlling the working pressure of the oil press to be 1000-3000kgf/cm2, the running speed to be not higher than 80mm/s, the stroke to be not lower than 120mm and the hot-pressing temperature to be 150-400 ℃, performing hydraulic pressure on the stamping module group under the condition, and transferring the image-text lines on the stamping die to the metal sheet through the pressure action.
And S4, blanking, namely placing the metal sheet stamped at the night S2 on a blanking platform of a lower die of a punch press machine, and inserting positioning holes in the plastic film into corresponding pre-assembled positioning columns on the blanking platform to ensure that the metal sheet and the blanking platform are fixed in relative positions. And then starting a punching machine, enabling the upper die to move downwards through the punching stroke of the punching machine, enabling the upper die platform and the die knife edge of the lower die to simultaneously act on the metal sheet to generate shearing force, punching and separating the metal sheet and the redundant rim charge of the plastic film to obtain the metal sheet with a fixed size, and finishing the blanking processing of the metal sheet.
S5, color printing, comprising:
s5.1, installing a positioning frame, selecting the corresponding positioning frame according to the size of the metal engraving, wherein the material of the positioning frame comprises but is not limited to one or more combinations of aluminum, aluminum alloy, zinc alloy and the like. The size of the inner frame of the positioning frame is matched with the size of the metal sheet after blanking processing, the inner frame is 5-10 mu m larger than each side of the outer size of the printing medium after blanking, and the thickness of the positioning frame is 0.20-0.40 mm
As shown in fig. 2, the positioning frame is installed on the working platform of the color press in a tiled manner, as shown in fig. 3 and 4, four pillars corresponding to the air suction holes on the working platform of the color press one by one are arranged on the lower side end face of the positioning frame, the diameter of each pillar is 1.0-1.8 mm, and the height of each pillar is 1-1.5 mm. Four apex angles of locating frame inboard are the circular arc, and the centre of a circle is four apex angles, and diameter 1~1.5mm, and the meaning of this fillet settlement can be avoided leading to the foil to cause the damage.
The outer side of the edge of the positioning frame is provided with a compression frame with the thickness smaller than that of the positioning frame, the compression frame and the positioning frame are integrally arranged, and the leg posts can also be arranged on the compression frame according to conditions.
During installation, the distance between adjacent positioning frames is 1-2 mm, and the positioning frames can be guaranteed to be installed completely.
As shown in fig. 5, after the positioning frame is installed, a PVC rubber pad is laid on the working platform of the color press, and the PVC rubber pad can cover the whole working platform. Wherein, be provided with a plurality of dodges of dodging the locating frame on the PVC cushion mouthful, the quantity of dodging the mouth is the same with the locating frame quantity of installing on the work platform, and dodges the length and the width of mouthful and all be greater than the locating frame, just all be less than the frame that bears the pressure. The thickness of the PVC rubber pad is equal to or less than that of the positioning frame, and preferably, the sum of the thicknesses of the PVC rubber pad and the pressure frame is equal to that of the positioning frame.
S5.2, simulating printing, and starting a color press to print a peripheral frame of the printed pattern according to the set printing position, wherein the peripheral frame has the same size as the metal intaglio;
s5.3, measuring, namely comparing each positioning frame with the corresponding peripheral frame and measuring deviation;
s5.4, adjusting a path, and adjusting a printing position set in the color press according to the measured deviation amount;
and S5.5, printing, namely, placing the metal sheet of the metal intaglio printing plate which is blanked in the S4 in the positioning frame in an upward mode, starting a suction fan of the color press, and pumping air in a pipeline on the lower side of the working plane of the color press to generate negative pressure, so that the metal intaglio printing plate is firmly adsorbed on the working plane of the color press.
Then the relative height of the color press grating nozzle and the positioning frame is adjusted, the distance between the color press grating nozzle and the printing medium is 0.5-1mm, the distance is set to keep the relatively fixed height, collision between the color press grating nozzle and the positioning frame in the operation process is effectively avoided, meanwhile, the phenomenon that the image is blurred due to ink scattering caused by too high height of the grating nozzle is avoided, the ink is sprayed to the corresponding position on the metal sheet through the grating nozzle to form color ink lines, the position relation between the color ink lines and the impression lines is one-to-one correspondence, and the position deviation between the color printed image lines and the image lines impressed by the metal sheet is lower than 100 mu m.
And finally, finishing the printing operation on the surface of the metal sheet.
S6, coating protection, namely soaking the metal sheet subjected to the color printing treatment in a metal protective agent aqueous solution to form a protective film on the surface of the metal surface to complete coating treatment, and washing the metal sheet with deionized water after soaking the metal protective agent aqueous solution, and airing.
Wherein the concentration of the aqueous solution solvent of the protective agent is 5-15V/V%, the temperature of the aqueous solution solvent is 45-60 ℃ in a water bath, and the soaking time of the metal sheet is 0.5-2 min.
And S7, secondary plastic package, namely, hot-pressing and attaching the metal surface of the metal intaglio to a layer of plastic film in the same step S1 in the same manner as the step S1.
And S8, punching, namely, horizontally placing the metal sheet subjected to the secondary plastic package treatment on a punching platform of a lower die of a punching machine, aligning the metal sheet with an alignment frame line of the punching platform, simultaneously acting punching hole edges of an upper die and the lower die on the metal sheet to generate shearing force, punching the metal sheet into a size with a fixed size, and finishing the punching treatment on the metal sheet.
The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.
Claims (10)
1. A preparation method of a metal intaglio printing is characterized by comprising the following steps:
s1, plastic packaging, namely, hot-pressing and attaching the metal sheet and a layer of plastic film, wherein the length and the width of the metal sheet are both larger than those of the metal intaglio painting finished product, and the length and the width of the plastic film are both larger than those of the metal sheet;
s2, punching, namely placing the metal sheet on a punching platform, aligning the metal sheet to be basically aligned with an alignment frame on the punching platform, and then punching a plurality of positioning holes in a plastic film outside the metal sheet;
s3, stamping, namely, placing the metal sheet on a stamping die with the surface facing downwards, positioning the metal sheet through the matching of a positioning hole and a positioning guide pillar on the stamping die, and then transferring the image-text lines on the stamping die onto the metal sheet through the action of pressure;
s4, blanking, namely cutting off redundant rim charge of the metal sheet and the plastic film after positioning through the positioning hole;
s5, color printing, comprising:
s5.1, installing a positioning frame, selecting a corresponding positioning frame according to the size of the metal intaglio, and installing the positioning frame on a working platform of the color press in a tiled mode;
s5.2, simulating printing, and starting a color press to print a peripheral frame of the printed pattern according to the set printing position, wherein the peripheral frame has the same size as the metal intaglio;
s5.3, measuring, namely comparing each positioning frame with the corresponding peripheral frame and measuring deviation;
s5.4, adjusting a path, and adjusting a printing position set in the color press according to the measured deviation amount;
s5.5, printing, namely placing the metal sheet of the metal intaglio painting after blanking in the S4 in a positioning frame with the upward surface, and starting a color press to print;
s6, coating protection, namely soaking the metal sheet subjected to the color printing treatment in a metal protective agent aqueous solution to form a protective film on the surface of the metal surface to complete the coating treatment;
s7, secondary plastic package, namely, hot-pressing and attaching the metal surface of the metal intaglio to a layer of plastic film;
and S8, punching, and cutting the redundant rim charge subjected to secondary plastic packaging.
2. The method for preparing a metal intaglio printing according to claim 1, wherein: in the step S1, the plastic film is a transparent film, and the plastic film is made of one or a combination of PET, PVC, and PP; the surface of the plastic film is provided with a layer of hot melt adhesive coating, and the hot melt adhesive is made of EVA, PP, PES, PA or TPU.
3. The method for producing a metal engraving of claim 1 or 2, wherein: in the step S1, the plastic film is placed on a piece of silicone oil paper with a size larger than that of the plastic film, and the silicone oil paper with a size larger than that of the plastic film is covered on the upper side of the metal sheet.
4. The method for preparing a metal intaglio printing according to claim 1, wherein: in step S3, after the metal sheet is placed on the imprint mold, a soft rubber pad is placed on the upper side of the plastic film.
5. The method for producing a metal engraving as claimed in claim 4, wherein: and a red vulcanized paper board is arranged on the upper side of the soft rubber cushion.
6. The method for producing a metal engraving of claim 5, wherein: the soft rubber mat is made of printing rubber cloth, the thickness of the soft rubber mat is 1.5-2mm, and the thickness of the red steel paperboard is 1.5-2 mm.
7. The method for preparing a metal intaglio printing according to claim 1, wherein: the step S3 is carried out in an oil press, the working pressure of the oil press is 1000-3000kgf/cm2, the running speed is not higher than 80mm/S, the stroke is not lower than 120mm, and the hot pressing temperature is 150-400 ℃.
8. The method for producing a metal engraving of claim 1 or 7, wherein: the pattern engraved on the stamping die in the step S3 is composed of lines with different densities, and the depth of the engraved lines is 40 μm-80 μm.
9. The method for preparing a metal intaglio printing according to claim 1, wherein: when the length of the long edge of the metal engraving is larger than 250mm, the positioning hole is placed on the outer side of the long edge, the shortest distance from the long edge is 10-12 mm, and the shortest distance from the short edge is 2-3 mm; when the length of the long edge of the metal engraving is not more than 250mm, the positioning hole is placed on the outer side of the short edge, the shortest distance from the short edge is 10-12 mm, and the shortest distance from the long edge is 2-3 mm.
10. The method for preparing a metal intaglio printing according to claim 1, wherein: a plurality of foot columns which are in one-to-one correspondence with the air suction holes on the working platform of the color press are arranged on the lower side end surface of the positioning frame; the working platform upper berth of color press is equipped with the PVC cushion, be provided with a plurality of dodges of dodging the locating frame on the PVC cushion and dodge the mouth, the edge outside of locating frame is provided with the pressurized frame that thickness is less than the locating frame, the length and the width of dodging the mouth all are greater than the locating frame, just all are less than the pressurized frame.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1573670B1 (en) * | 2002-12-04 | 2008-10-22 | Key-Tech, Inc. | Method for thermally printing a dye image onto a three dimensional object using a dye carrier sheet |
| CN106945450A (en) * | 2017-03-09 | 2017-07-14 | 星远控股有限公司 | The manufacture craft of composite membrane product with colored convex-concave pattern |
| CN108608785A (en) * | 2018-05-11 | 2018-10-02 | 深圳市金宝盈文化股份有限公司 | A kind of noble metal paillon UV color printings, gloss oil protection product manufacture craft |
| CN109532309A (en) * | 2018-11-27 | 2019-03-29 | 深圳市金宝盈文化股份有限公司 | A kind of production method of cameo metal color printing etching |
-
2019
- 2019-11-22 CN CN201911156255.6A patent/CN110816138A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1573670B1 (en) * | 2002-12-04 | 2008-10-22 | Key-Tech, Inc. | Method for thermally printing a dye image onto a three dimensional object using a dye carrier sheet |
| CN106945450A (en) * | 2017-03-09 | 2017-07-14 | 星远控股有限公司 | The manufacture craft of composite membrane product with colored convex-concave pattern |
| CN108608785A (en) * | 2018-05-11 | 2018-10-02 | 深圳市金宝盈文化股份有限公司 | A kind of noble metal paillon UV color printings, gloss oil protection product manufacture craft |
| CN109532309A (en) * | 2018-11-27 | 2019-03-29 | 深圳市金宝盈文化股份有限公司 | A kind of production method of cameo metal color printing etching |
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Application publication date: 20200221 |