CN117429192A - Transfer printing method for UV digital printing - Google Patents
Transfer printing method for UV digital printing Download PDFInfo
- Publication number
- CN117429192A CN117429192A CN202210815905.9A CN202210815905A CN117429192A CN 117429192 A CN117429192 A CN 117429192A CN 202210815905 A CN202210815905 A CN 202210815905A CN 117429192 A CN117429192 A CN 117429192A
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- China
- Prior art keywords
- ink
- transparent
- lamp
- pattern layer
- layer
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- 238000000034 method Methods 0.000 title claims abstract description 36
- 238000007639 printing Methods 0.000 title claims abstract description 34
- 238000010023 transfer printing Methods 0.000 title claims abstract description 20
- 239000000463 material Substances 0.000 claims description 9
- 230000001678 irradiating effect Effects 0.000 claims description 7
- 238000005507 spraying Methods 0.000 claims description 5
- 239000004809 Teflon Substances 0.000 claims description 4
- 229920006362 Teflon® Polymers 0.000 claims description 4
- 238000007711 solidification Methods 0.000 claims description 2
- 229920001296 polysiloxane Polymers 0.000 claims 1
- 239000000976 ink Substances 0.000 description 75
- 238000001723 curing Methods 0.000 description 12
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 239000000741 silica gel Substances 0.000 description 3
- 229910002027 silica gel Inorganic materials 0.000 description 3
- 239000003086 colorant Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000003848 UV Light-Curing Methods 0.000 description 1
- 239000012876 carrier material Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
- B41M5/26—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used
- B41M5/382—Contact thermal transfer or sublimation processes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M7/00—After-treatment of prints, e.g. heating, irradiating, setting of the ink, protection of the printed stock
- B41M7/0081—After-treatment of prints, e.g. heating, irradiating, setting of the ink, protection of the printed stock using electromagnetic radiation or waves, e.g. ultraviolet radiation, electron beams
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Electromagnetism (AREA)
- General Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Optics & Photonics (AREA)
- Ink Jet (AREA)
- Ink Jet Recording Methods And Recording Media Thereof (AREA)
Abstract
The invention provides a transfer printing method of UV digital printing, which is mainly characterized in that UV ink is used for jetting ink on a carrier with low firmness, a pattern layer is output in a mirror image mode, then the pattern layer is fully cured and irradiated by a UV lamp, then a first transparent ink layer is output in a mirror image mode by transparent UV ink on the pattern layer, and when the UV ink is output in the jet mode, the pattern layer on the carrier is finally transferred onto a processing object in a pressurizing mode through the semi-curing irradiation of the UV lamp.
Description
Technical Field
The invention relates to a transfer printing method of UV digital printing, in particular to a transfer printing method which can simply transfer printed patterns to curved surfaces which cannot be directly printed or larger objects which cannot be directly placed on a printer in a direct transfer printing mode after printing.
Background
Because of the progress of printing technology, today's printing equipment can print on the upper surface of soft objects to be printed (such as paper, cloth or other textiles) or hard objects to be printed (such as plastics, metals, glass or ceramics), so that it is widely used in various industrial fields to increase the visual effect of the appearance of the commodity, and today's printing methods mainly include both traditional printing and digital printing.
Because UV digital printing can be applied to various materials, UV ink is environment-friendly than solvent type ink, and therefore, the UV digital printing machine is widely applied and gradually becomes the main stream of digital image output, but the limitation that the traditional digital printing machine can only print on a planar object can not be overcome, generally, digital printing on a simple curved surface (the highest and lowest points of the curved surface are not more than 3 mm) can only be achieved in a unidirectional way and matched with large ink drops at a lower printing speed, and only special type ink jet heads can be used, and the curved surface can reflect UV curing light sources in the printing process, so that the damage rate of the ink jet heads is improved. In addition, because of the physical limitations of the drop ejection path, not all curved surfaces in different directions on an article can achieve the same printing effect, and because of the larger drops, the resolution of the printed pattern is lower than the typical print quality. The above method is not widely used. In addition, there are other methods of printing on special materials and then transfer or thermal transfer, but the process is complex and requires special materials or additional equipment (such as a hot peritoneal machine or a hot press …) to perform.
Disclosure of Invention
Although some of these methods have to sacrifice printing quality and productivity, some of them require special materials and other processing equipment to indirectly perform transfer or transfer by complex processes, so how to effectively solve the printing problem on special curved objects or large objects that cannot be directly placed on a printer has been the direction of the present inventors.
The invention aims to provide a transfer printing method for UV digital printing, which has the advantages of easy process, low cost and capability of quickly and effectively transferring printed patterns to curved surfaces which cannot be directly printed or larger objects which cannot be directly placed on a printer.
In order to achieve the above object, the present invention provides a transfer printing method for UV digital printing, which mainly comprises the following steps:
step a: spraying UV ink on a carrier with low firmness with the UV ink, mirroring and outputting a pattern layer, and fully curing and irradiating by a UV lamp;
step b: outputting a first transparent ink layer by mirror image of transparent UV ink on the pattern layer, and simultaneously performing semi-solidification irradiation by a UV lamp when the ink is output;
step c: finally, the pattern layer on the carrier is pressed and transferred on a processing object.
In practice, the semi-curing irradiation energy of the UV lamp in step b is 30-60% of the minimum energy at which the clear UV ink can be fully cured.
In practice, after the pattern layer is cured, the step a can output a white ink layer on the pattern layer by using a white UV ink jet mirror image, and the white ink layer is fully cured and irradiated by a UV lamp.
In implementation, the method further comprises the following steps:
step b1: outputting a second transparent ink layer by mirror image of the transparent UV ink on the first transparent ink layer in the step b, and irradiating with irradiation energy lower than that of the UV lamp in the step b after the ink is ejected.
In practice, the semi-curing irradiation energy of the UV lamp in step b is 50-80% of the minimum energy at which the transparent UV ink can be fully cured, and the curing irradiation energy of the UV lamp in step b1 is 1-10% of the minimum energy at which the transparent UV ink can be fully cured.
In implementation, the carrier is a material with low bonding firmness with the ink, such as a release film, a silica gel pad, a PP film, a teflon film and the like.
In practice, the UV ink in step a includes inks of colors such as color, black and white.
For further understanding of the present invention, the following detailed description of the preferred embodiments will be given with reference to the drawings and figures.
Drawings
FIG. 1 is a flow chart of a transfer printing method according to an embodiment of the present invention;
FIG. 2 is a schematic perspective view of a pattern layer transferred onto a processed object according to an embodiment of the present invention;
FIG. 3 is a schematic diagram illustrating steps of a transfer method according to an embodiment of the present invention;
FIG. 4 is a flow chart of a transfer printing method according to another embodiment of the present invention;
fig. 5 is a schematic diagram illustrating steps of a transfer method according to another embodiment of the invention.
Reference numerals illustrate:
1: carrier body
2: pattern layer
3: first transparent ink layer
4: processing article
5: white ink layer
6: second transparent ink layer
Step a: spraying UV ink on a carrier with low firmness to output a pattern layer by mirror image, and fully solidifying by UV lamp
Step b: outputting a first transparent ink layer by mirror image of transparent UV ink on the pattern layer, and simultaneously semi-solidifying and irradiating by UV lamp during ink jet output
Step b1: outputting a second transparent ink layer by mirror image of the transparent UV ink on the first transparent ink layer in the step b, and irradiating with energy lower than that of the UV lamp in the step b after the ink is ejected
Step c: finally, the pattern layer on the carrier is pressed and transferred on a processed object
Detailed Description
Referring to fig. 1 to 3, a flow chart of a transfer method of UV digital printing according to an embodiment of the invention is shown.
The invention provides a transfer printing method for UV digital printing, which mainly comprises the following steps:
step a: spraying UV ink on a carrier 1 with low firmness with the UV ink, mirroring and outputting a pattern layer 2, and fully curing and irradiating by a UV lamp;
step b: outputting a first transparent ink layer 3 by mirror image of transparent UV ink on the pattern layer 2, and simultaneously performing semi-curing irradiation by a UV lamp during ink jet output;
step c: finally, the pattern layer 2 on the carrier 1 is transferred onto a processing object 4 by pressing.
Wherein, the UV ink in the step a comprises color ink of colors such as color, black and white. The carrier 1 is a material with low bonding firmness with the printing ink, such as a release film, a silica gel pad, a PP film, a teflon film and the like, and the semi-curing irradiation energy of the UV lamp in the step b is 30-60% of the minimum energy of the transparent UV printing ink capable of being completely cured.
Thus, in the embodiment, taking the block structure of the processing object 4 with a large curved surface as an example in fig. 2, firstly, the pattern layer 2 to be printed on the processing object 4 is printed on the carrier 1 (release film) in a mirror image mode by using UV ink (such as color UV ink) to jet ink, then the pattern layer 2 is completely cured and irradiated by a UV lamp (i.e. the color UV ink is completely cured), then the first transparent ink layer 3 is printed on the pattern layer 2 in mirror image by using the transparent UV ink, and at the time of ink jet output, the first transparent ink layer 3 has a certain viscosity in a semi-cured state at the same time, so finally, when the pattern layer 2 on the carrier 1 is transferred onto the processing object 4 in a pressing mode, the first transparent ink layer 3 is adhered onto the processing object 4, so that the pattern layer 2 is completely transferred onto the processing object 4, and a positive pattern is presented on the processing object 4.
In addition, as shown in fig. 3, after the pattern layer 2 is cured, the step a can output a white ink layer 5 on the pattern layer 2 by using a white UV ink jet image, and the white ink layer is fully cured and irradiated by a UV lamp, so that the pattern layer 2 can be presented on the white ink layer 5 during transfer, and the transfer process can be more smooth and the integrity of the pattern layer 2 can be protected.
In order to make the pattern layer have better smoothness and flatness, the process can be achieved by adding transparent ink, as shown in fig. 4 and 5, the complete process steps are as follows:
step a: spraying UV ink on a carrier 1 with low firmness with the UV ink, mirroring and outputting a pattern layer 2, and fully curing and irradiating by a UV lamp;
step b: outputting a first transparent ink layer 3 by mirror image of transparent UV ink on the pattern layer 2, and simultaneously performing semi-curing irradiation by a UV lamp during ink jet output;
step b1: on the first transparent ink layer 3 in step b, a second transparent ink layer 6 is output as a mirror image of the transparent UV ink and, after the inkjet output, irradiated with an irradiation energy lower than the UV lamp in step b.
Step c: finally, the pattern layer 2 on the carrier 1 is transferred onto a processing object 4 by pressing.
Wherein the semi-curing irradiation energy of the UV lamp in the step b is 50-80% of the lowest energy of the transparent UV ink which can be fully cured, and the curing irradiation energy of the UV lamp in the step b1 is 1-10% of the lowest energy of the transparent UV ink which can be fully cured. Of course, after the pattern layer 2 is cured in the step a, a white ink layer 5 can be output on the pattern layer 2 by using a white UV ink jet mirror image, and the pattern layer 2 can be presented on the white ink layer 5 during transfer printing by means of full-curing irradiation of a UV lamp, so that the transfer printing process can be more smooth and the integrity of the pattern layer 2 can be protected.
Therefore, during transfer, the second transparent ink layer 6 has a certain viscosity in the micro-cured state, so that when the pattern layer 2 on the carrier 1 is finally transferred onto the processing object 4 under pressure, the second transparent ink layer 6 can be adhered onto the processing object 4, so that the pattern layer 2 is completely transferred onto the processing object 4, and the processing object presents a positive pattern.
Therefore, the invention utilizes the characteristic that the firmness of UV ink on certain materials is poor (such as release paper, silica gel pad, PP film, teflon film and the like …), firstly prints mirror image patterns of patterns to be output on the release carrier materials, prints a layer of semi-cured or micro-cured ink layer with viscosity by utilizing the steps, then presses the patterns on a curved surface or an object to be transferred, finally removes the release material to finish the transfer process, and can obtain good adhesion after being placed for a plurality of hours due to the characteristic that the semi-cured or micro-cured ink has continuous reaction, or can obtain good adhesion immediately after being transferred and directly cured by a UV light source, so that the patterns can be formed on the processed object effectively and rapidly by the method of the invention according to the curved surface which cannot be directly printed or the large object which cannot be directly placed on a printer.
The foregoing description of the embodiments and the technical means used can be derived from the disclosure or the teachings herein, and can be regarded as equivalent variations of the inventive concept, which do not depart from the essential spirit covered by the specification and the drawings, and are considered to be within the technical scope of the invention.
In summary, according to the above disclosure, the present invention can clearly achieve the intended purpose of the invention, and provides a transfer printing method for UV digital printing, which has great practical and industrial application value, and the invention patent application is proposed according to law.
Claims (7)
1. A transfer printing method of UV digital printing, comprising the steps of:
step a: spraying UV ink on a carrier with low firmness with the UV ink, mirroring the output pattern layer, and performing full-curing irradiation by a UV lamp;
step b: outputting a first transparent ink layer in a mirror image mode through transparent UV ink on the pattern layer, and simultaneously performing semi-solidification irradiation through a UV lamp when ink is output;
step c: and finally, pressurizing and transferring the pattern layer on the carrier onto the processed object.
2. The transfer printing method of UV digital printing according to claim 1, wherein the semi-curing irradiation energy of the UV lamp in step b is 30-60% of the minimum energy at which the transparent color UV ink can be fully cured.
3. The transfer printing method of UV digital printing according to claim 1, wherein said step a, after the pattern layer is cured, outputs a white ink layer in a white UV ink jet mirror image on said pattern layer and is irradiated by UV lamp full curing.
4. A transfer method of UV digital printing according to claim 1 or 3, wherein between step b and step c, further comprising:
step b1: outputting a second transparent ink layer in a mirror image of the transparent UV ink on the first transparent ink layer in the step b, and irradiating with irradiation energy lower than that of the UV lamp in the step b after the ink is output.
5. The transfer printing method of UV digital printing according to claim 4, wherein the semi-curing irradiation energy of the UV lamp in step b is 50-80% of the lowest energy at which the transparent UV ink can be fully cured, and the curing irradiation energy of the UV lamp in step b1 is 1-10% of the lowest energy at which the transparent UV ink can be fully cured.
6. The transfer printing method of UV digital printing according to claim 1, wherein the carrier is a material having a low degree of bonding reliability with ink such as a release film, a silicone pad, a PP film, a teflon film, or the like.
7. The transfer printing method of UV digital printing according to claim 1, wherein the UV ink in the step a comprises color, black and white, or the like.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210815905.9A CN117429192A (en) | 2022-07-12 | 2022-07-12 | Transfer printing method for UV digital printing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210815905.9A CN117429192A (en) | 2022-07-12 | 2022-07-12 | Transfer printing method for UV digital printing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117429192A true CN117429192A (en) | 2024-01-23 |
Family
ID=89550291
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210815905.9A Pending CN117429192A (en) | 2022-07-12 | 2022-07-12 | Transfer printing method for UV digital printing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117429192A (en) |
-
2022
- 2022-07-12 CN CN202210815905.9A patent/CN117429192A/en active Pending
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