CN113715537B - UV ink printing technology and printing equipment thereof - Google Patents
UV ink printing technology and printing equipment thereof Download PDFInfo
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- CN113715537B CN113715537B CN202111111573.8A CN202111111573A CN113715537B CN 113715537 B CN113715537 B CN 113715537B CN 202111111573 A CN202111111573 A CN 202111111573A CN 113715537 B CN113715537 B CN 113715537B
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- printing
- ink
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- lifting
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- 238000007639 printing Methods 0.000 title claims abstract description 130
- 238000005516 engineering process Methods 0.000 title description 2
- 238000009281 ultraviolet germicidal irradiation Methods 0.000 claims abstract description 14
- 238000000034 method Methods 0.000 claims abstract description 12
- 230000008569 process Effects 0.000 claims abstract description 12
- 239000002344 surface layer Substances 0.000 claims abstract description 9
- 230000001678 irradiating effect Effects 0.000 claims abstract description 8
- 239000010410 layer Substances 0.000 claims abstract description 6
- 238000007650 screen-printing Methods 0.000 claims description 25
- 230000007246 mechanism Effects 0.000 claims description 16
- 230000001360 synchronised effect Effects 0.000 claims description 3
- 238000007711 solidification Methods 0.000 abstract description 8
- 230000008023 solidification Effects 0.000 abstract description 8
- 230000008719 thickening Effects 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 13
- 239000000758 substrate Substances 0.000 description 5
- 239000000843 powder Substances 0.000 description 4
- 230000032258 transport Effects 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000000049 pigment Substances 0.000 description 2
- 238000001771 vacuum deposition Methods 0.000 description 2
- 239000003086 colorant Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M1/00—Inking and printing with a printer's forme
- B41M1/12—Stencil printing; Silk-screen printing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F15/00—Screen printers
- B41F15/08—Machines
- B41F15/12—Machines with auxiliary equipment, e.g. for drying printed articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F23/00—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing
- B41F23/04—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing by heat drying, by cooling, by applying powders
- B41F23/0403—Drying webs
- B41F23/0406—Drying webs by radiation
- B41F23/0409—Ultra-violet dryers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F23/00—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing
- B41F23/04—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing by heat drying, by cooling, by applying powders
- B41F23/044—Drying sheets, e.g. between two printing stations
- B41F23/045—Drying sheets, e.g. between two printing stations by radiation
- B41F23/0453—Drying sheets, e.g. between two printing stations by radiation by ultraviolet dryers
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
- B41P2215/00—Screen printing machines
- B41P2215/10—Screen printing machines characterised by their constructional features
Abstract
The invention provides a UV ink printing process and printing equipment thereof, wherein the printing process comprises the following steps: s1, bottom layer printing: printing colorless UV ink on a printing stock through a printing silk screen; s2, first UV irradiation: irradiating the printing stock in the step S1 by adopting an ultraviolet lamp to cure the colorless UV ink; s3, surface layer printing: printing colored UV ink on the colorless ink cured in the step S2 through a printing silk screen; s4, secondary UV irradiation: and (4) irradiating the printing stock in the step (S3) by adopting an ultraviolet lamp to cure the UV printing ink on the surface layer. The invention has the following beneficial effects: guarantee the thickness of printing ink through printing for the first time, then guarantee the color of printing ink through printing for the second time, guaranteed the abundant solidification of UV printing ink simultaneously, it leads to UV printing ink curing time to lengthen after having solved thickening printing ink thickness that exists among the prior art, and the printing ink that is close to the stock that appears easily does not have the technical problem of solidification.
Description
Technical Field
The invention relates to the technical field of printing, in particular to a UV ink printing process and printing equipment thereof.
Background
The UV ink is an ultraviolet light curing ink, and is applied to vacuum electroplated products at the earliest time, and a UV coating is usually coated on a metal product subjected to vacuum coating to protect a vacuum coating which is very easy to oxidize.
To increase the aesthetic appearance of the surface, a conventional colorant powder may be added to the inherently colorless UV ink to increase the color of the coating.
However, after the pigment powder is added, the curing speed of the ink can be greatly reduced due to color blocking, and even the ink close to a printing material can not be cured, wherein the condition that the pigment powder with dark color is added is the most.
In order to show the third dimension of printing convexly in the printing process, through thickening printing ink thickness, and again because the interpolation of toner powder after thickening printing ink thickness can lead to UV printing ink curing time to lengthen, the condition that the printing ink that appears being close to the stock does not solidify more easily simultaneously.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a UV ink printing process and printing equipment thereof, which solve the technical problems that the UV ink curing time is prolonged after the ink thickness is thickened and the ink close to a printing stock is not cured easily in the prior art.
According to an embodiment of the present invention, a UV ink printing process includes:
s1, bottom layer printing: printing colorless UV ink on a printing stock through a printing silk screen;
s2, first UV irradiation: irradiating the printing stock in the step S1 by adopting an ultraviolet lamp to cure the colorless UV ink;
s3, surface layer printing: printing colored UV ink on the colorless ink cured in the step S2 through a printing silk screen;
s4, secondary UV irradiation: and (4) irradiating the printing stock in the step (S3) by adopting an ultraviolet lamp to cure the UV printing ink on the surface layer.
Further, before the steps S1 and S3 are performed, the printing material needs to be positioned, and the relative positions of the printing screen and the printing material in the positioning in the steps S3 and S1 must be the same.
Further, the total power of the ultraviolet lamps in the steps S2 and S4 is 100-150W.
According to the printing equipment of the UV ink disclosed by the embodiment of the invention, the printing equipment is used for the printing process of the UV ink disclosed by the embodiment, the printing equipment comprises a first conveying device, a first screen printer for bottom layer printing, a second conveying device and a second screen printer for surface layer printing from bottom to top, one end of the first conveying device is provided with a lifting curing device which can be communicated with the first conveying device and the second conveying device and is used for first UV irradiation and second UV irradiation, an ultraviolet lamp is arranged at the position of the lifting curing device, one end of the lifting curing device is provided with an outlet conveying device, and the outlet conveying device is parallel to the first conveying device.
Furthermore, the first conveying device, the first screen printing machine, the second conveying device, the second screen printing machine, the lifting curing device and the outlet conveying device are all installed on a supporting frame, a shielding cover wraps the supporting frame, and a baffle is arranged between the lifting curing device and the first screen printing machine as well as between the lifting curing device and the second screen printing machine.
Furthermore, first conveyer, second conveyer and export conveyer all include the motor and with the hold-in range mechanism that the motor is connected, the motor is all installed on the support frame with hold-in range mechanism, first conveyer is located first screen printing machine under the position and is equipped with the backup pad, second conveyer is located second screen printing machine under the position and is equipped with the backup pad.
Furthermore, lift solidification equipment includes transfer portion and lift part, the lift part includes the support fence and sets up the electric push rod in support fence four corners, the electric push rod is installed on the support frame, the transfer portion is installed on the support fence, the transfer portion include the motor and with the hold-in range mechanism that the motor is connected.
Furthermore, a frame is arranged on the supporting fence, and the ultraviolet lamps are uniformly distributed on the inner side of the frame.
Further, the ultraviolet lamps are uniformly distributed on the inner side of the shielding cover surrounding the lifting curing device.
Furthermore, first conveyer is located first screen printing machine and all is equipped with electric push rod on the support frame that second conveyer is located the both sides position of second screen printing machine, electric push rod top still is equipped with the ejector pad, hold-in range mechanism is pressed close to the ejector pad, be equipped with the camera on first screen printing machine and the second screen printing machine.
The technical principle of the invention is as follows: the colorless UV ink is printed on a printing material through a first printing, the colorless UV ink has large thickness, but the curing speed of the colorless UV ink is not reduced because the colorless UV ink is colorless, and the colorless UV ink is easy to be completely cured.
Compared with the prior art, the invention has the following beneficial effects: guarantee the thickness of printing ink through printing for the first time, then guarantee the color of printing ink through printing for the second time, guaranteed the abundant solidification of UV printing ink simultaneously, it leads to UV printing ink curing time to lengthen after having solved thickening printing ink thickness that exists among the prior art, and the printing ink that is close to the stock that appears easily does not have the technical problem of solidification.
Drawings
FIG. 1 is a flow chart of a UV ink printing process according to examples 1-2 of the present invention.
Fig. 2 is a schematic structural view of a printing apparatus for UV ink of embodiment 2 of the present invention.
Fig. 3 isbase:Sub>A sectional viewbase:Sub>A-base:Sub>A of fig. 2.
Fig. 4 is a front view of the lifting and curing device in embodiment 1 of the present invention.
Fig. 5 is a side view of the lifting and curing device of embodiment 1 of the present invention.
In the above drawings: 100. a support frame; 101. a first conveying device; 102. a second conveying device; 103. an outlet transfer device; 110. a first screen printer; 120. a second screen printer; 130. a shield cover; 131. a baffle plate; 140. a motor; 150. a synchronous belt mechanism; 151. a support plate; 160. pushing a block; 170. a camera; 200. lifting the curing device; 201. an ultraviolet lamp; 210. a transfer section; 220. a lifting part; 221. a support rail; 222. an electric push rod; 223. a frame.
Detailed Description
The technical solution of the present invention is further explained with reference to the drawings and the embodiments.
The UV ink printing process as shown in fig. 1, comprising:
s1, bottom layer printing: the colourless UV ink is printed onto the substrate through a printing screen and the substrate is positioned prior to printing and the positioning positions are remembered.
S2, first UV irradiation: and (3) irradiating the printing stock in the step S1 by using an ultraviolet lamp 201 to cure the colorless UV ink, wherein the total power of the ultraviolet lamp is 100-150W to cure the colorless UV ink.
S3, surface layer printing: and (3) printing the colored UV ink on the solidified colorless ink in the step (S2) through a printing screen, positioning the printing stock before printing, wherein the positioning position is the same as that in the step (S1), so as to ensure that the position of the ink printed for the second time is right above the ink printed for the first time.
S4, secondary UV irradiation: and (3) irradiating the printing stock in the step (S3) by using an ultraviolet lamp 201 to cure the UV ink on the surface layer, wherein the total power of the ultraviolet lamp is 100-150W, so that the colored UV ink is cured.
Example 1
The printing equipment for the UV ink shown in fig. 2 is used for a UV ink printing process, and specifically comprises a first conveying device 101, a first screen printer 110 for bottom printing, a second conveying device 102 and a second screen printer 120 for top printing from bottom to top, wherein one end of the first conveying device 101 is provided with a lifting curing device 200 which can be connected with the first conveying device 101 and the second conveying device 102 and is used for first UV irradiation and second UV irradiation, an ultraviolet lamp 201 is arranged at the position of the lifting curing device 200, one end of the lifting curing device 200 is provided with an outlet conveying device 103, the outlet conveying device 103 is parallel to the first conveying device 101, and the first conveying device 101 can convey a new printing material into the lifting curing device 200 while the lifting curing device 200 conveys the completed printing material to the outlet conveying device 103.
As shown in fig. 2-3, the first conveying device 101, the first screen printer 110, the second conveying device 102, the second screen printer 120, the lifting curing device 200 and the outlet conveying device 103 are all mounted on a supporting frame 100, a shielding cover 130 is wrapped outside the supporting frame 100, a blocking plate 131 is disposed between the lifting curing device 200 and the first screen printer 110 and the second screen printer 120, and the blocking plate 131 is welded and fixed to the shielding cover 130 for shielding light of the ultraviolet lamp 201.
As shown in fig. 2-3, each of the first conveyor 101, the second conveyor 102, and the exit conveyor 103 includes a motor 140 and a timing belt mechanism 150 connected to the motor 140, i.e., the motor 140 is connected to a driving roller of the timing belt mechanism 150, the timing belt mechanism 150 is mounted on the supporting frame 100 by using a belt bearing, the motor 140 is bolted on the supporting frame 100, a supporting plate 151 is bolted on a position of the first conveyor 101 directly below the first screen printer 110, and a supporting plate 151 is bolted on a position of the second conveyor 102 directly below the second screen printer 120.
As shown in fig. 4-5, the lifting curing device 200 includes a conveying part 210 and a lifting part 220, the lifting part 220 includes a supporting column 221 and electric push rods 222 disposed at four corners of the supporting column 221, so that the electric push rods 222 can push the supporting column 221 to move up and down, the electric push rods 222 are bolted on the supporting frame 100, the conveying part 210 is mounted on the supporting column 221, the conveying part 210 includes a motor 140 and a timing belt mechanism 150 connected with the motor 140, i.e., the motor 140 is keyed with a driving roller of the timing belt mechanism 150, the timing belt mechanism 150 is mounted on the supporting column 221 by using a belt seat bearing, and the motor 140 is bolted on the supporting column 221.
As shown in fig. 4-5, a frame 223 is welded on the support column 221, and ultraviolet lamps 201 are uniformly distributed on the inner side of the frame 223, so that the UV ink can be rapidly cured.
As shown in fig. 3, the electric push rods 222 are bolted onto the supporting frames 100 of the first conveying device 101 and the second conveying device 102 on both sides of the second screen printing machine 120, push blocks 160 are screwed onto the tops of the electric push rods 222, the push blocks 160 are close to the synchronous belt mechanism 150, and the position of the printed material can be adjusted by the push blocks 160, cameras 170 are arranged on the first screen printing machine 110 and the second screen printing machine 120, the position of the printed material is captured by the cameras 170, the position of the printed material in the left-right direction is adjusted by the electric push rods 222 on both sides of the first conveying device 101 or the second conveying device 102, and the position of the printed material in the front-back direction and the position of the printed material in the left-right direction are adjusted by the motors 140 of the first conveying device 101 or the second conveying device 102, so as to accurately position the printed material in the front-back direction and the left-right direction.
Example 2
As shown in fig. 2, the present embodiment is different from embodiment 1 in that: the ultraviolet lamps 201 are evenly distributed on the inner side of the shield cover 130 surrounding the lifting curing device 200.
When the device is used, a printing stock is placed on the first conveying device 101 and then conveyed to the position below the first screen printer 110, the camera 170 of the first screen printer 110 captures an image of the printing stock, the printing stock is positioned through the electric push rods 222 on the two sides of the first conveying device 101 and matched with the motor 140 of the first conveying device 101, then the first screen printer 110 performs printing, the printing stock is conveyed to the lifting curing device 200 after the printing stock is finished, curing is performed through the ultraviolet lamp 201, and the electric push rods 222 of the lifting curing device 200 push the conveying part 210 to ascend and stop when the printing stock reaches the position parallel to the second conveying device 102.
After the solidification is finished, the conveying part 210 conveys the printing stock to the second conveying device 102, the second conveying device 102 conveys the printing stock to the position below the second screen printer 120, the camera 170 of the second screen printer 120 captures an image of the printing stock, the electric push rods 222 on two sides of the second conveying device 102 are matched with the motor 140 of the second conveying device 102 to position the printing stock, then the second screen printer 120 performs printing, the printing stock is conveyed to the lifting and curing device 200 after the printing stock is finished, the solidification is performed through the ultraviolet lamp 201, and the electric push rods 222 of the lifting and curing device 200 push the conveying part 210 to descend at the same time of the solidification, and the parallel position of the first conveying device 101 is reached and stopped.
At the same time, a new printing material can be placed on the first conveyor 101, so that the first conveyor 101 and the first screen printing machine 110 print simultaneously with the second conveyor 102 and the second screen printing machine 120.
Finally the transport section 210 transports the substrate to the exit conveyor 103, the exit conveyor 103 transports the substrate out of the printing apparatus, and the first conveyor 101 transports a new substrate that has completed the first print to the lifting and curing device 200.
Finally, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that various changes and modifications may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (9)
1. A printing apparatus for UV ink, comprising: for UV ink printing processes;
the UV ink printing process comprises the following steps:
s1, bottom layer printing: printing colorless UV ink on a printing stock through a printing silk screen;
s2, first UV irradiation: irradiating the printing stock in the step S1 by adopting an ultraviolet lamp to cure the colorless UV ink;
s3, surface layer printing: printing colored UV ink on the colorless ink which is cured in the step S2 through a printing silk screen;
s4, secondary UV irradiation: irradiating the printing stock in the step S3 by adopting an ultraviolet lamp to cure the UV printing ink on the surface layer;
the printing equipment comprises a first conveying device, a first screen printer for bottom printing, a second conveying device and a second screen printer for top layer printing from bottom to top, wherein one end of the first conveying device is provided with a lifting curing device which can be communicated with the first conveying device and the second conveying device and is used for first UV irradiation and second UV irradiation, the lifting curing device is provided with an ultraviolet lamp, one end of the lifting curing device is provided with an outlet conveying device, and the outlet conveying device is parallel to the first conveying device.
2. A printing apparatus for UV ink as claimed in claim 1, wherein: before the steps S1 and S3 are carried out, the printing stock needs to be positioned, and the relative positions of the printing silk screen and the printing stock positioned in the steps S3 and S1 need to be the same.
3. A printing apparatus for UV ink as claimed in claim 1, wherein: the total power of the ultraviolet lamps in the steps S2 and S4 is 100-150W.
4. The printing apparatus for UV ink according to claim 1, wherein: the first conveying device, the first screen printing machine, the second conveying device, the second screen printing machine, the lifting curing device and the outlet conveying device are all installed on a supporting frame, a shielding cover wraps the supporting frame, and a baffle is arranged between the lifting curing device and the first screen printing machine as well as between the lifting curing device and the second screen printing machine.
5. Printing apparatus for UV ink as claimed in claim 4, characterised in that: first conveyer, second conveyer and export conveyer all include the motor and with the hold-in range mechanism that the motor is connected, the motor is all installed on the support frame with hold-in range mechanism, first conveyer is located first screen printing machine under the position be equipped with the backup pad, second conveyer is located second screen printing machine under the position be equipped with the backup pad.
6. Printing apparatus for UV ink as claimed in claim 4, characterised in that: the lifting curing device comprises a conveying part and a lifting part, wherein the lifting part comprises a supporting fence and electric push rods arranged at four corners of the supporting fence, the electric push rods are arranged on a supporting frame, the conveying part is arranged on the supporting fence, and the conveying part comprises a motor and a synchronous belt mechanism connected with the motor.
7. Printing apparatus for UV ink as claimed in claim 6, characterised in that: the support fence is provided with a frame, and the ultraviolet lamps are uniformly distributed on the inner side of the frame.
8. Printing apparatus for UV ink as claimed in claim 4, characterised in that: the ultraviolet lamps are uniformly distributed on the inner side of the shielding cover surrounding the lifting curing device.
9. Printing apparatus for UV ink as claimed in claim 5, characterised in that: the first conveying device is located first screen printing machine and all is equipped with electric push rod on the support frame that second conveying device is located second screen printing machine's both sides position, electric push rod top still is equipped with the ejector pad, hold-in range mechanism is pressed close to the ejector pad, be equipped with the camera on first screen printing machine and the second screen printing machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111111573.8A CN113715537B (en) | 2021-09-23 | 2021-09-23 | UV ink printing technology and printing equipment thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111111573.8A CN113715537B (en) | 2021-09-23 | 2021-09-23 | UV ink printing technology and printing equipment thereof |
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| Publication Number | Publication Date |
|---|---|
| CN113715537A CN113715537A (en) | 2021-11-30 |
| CN113715537B true CN113715537B (en) | 2023-03-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111111573.8A Active CN113715537B (en) | 2021-09-23 | 2021-09-23 | UV ink printing technology and printing equipment thereof |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0574760A1 (en) * | 1992-06-03 | 1993-12-22 | EUROPLASTICA S.r.l. | Silk - screen printing machine |
| CN101811389A (en) * | 2010-02-10 | 2010-08-25 | 杨国辉 | Screen printing machine |
| CN104647884A (en) * | 2013-11-22 | 2015-05-27 | 珠海格力电器股份有限公司 | Silkscreen printing device |
| CN109016823A (en) * | 2018-06-06 | 2018-12-18 | 苏州安特实业有限公司 | A kind of multiplex priting process units |
| CN210390444U (en) * | 2019-07-06 | 2020-04-24 | 东莞市安色机械制造有限公司 | UV screen printing machine capable of quickly printing for two times |
| CN111532034A (en) * | 2020-05-26 | 2020-08-14 | 云南岭东印刷包装有限公司 | Printed matter two-dimensional code spouts sign indicating number and detects integrated device |
| CN211683949U (en) * | 2019-12-16 | 2020-10-16 | 深圳市百力成科技有限公司 | Full-automatic silk screen printing machine of polychrome |
-
2021
- 2021-09-23 CN CN202111111573.8A patent/CN113715537B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0574760A1 (en) * | 1992-06-03 | 1993-12-22 | EUROPLASTICA S.r.l. | Silk - screen printing machine |
| CN101811389A (en) * | 2010-02-10 | 2010-08-25 | 杨国辉 | Screen printing machine |
| CN104647884A (en) * | 2013-11-22 | 2015-05-27 | 珠海格力电器股份有限公司 | Silkscreen printing device |
| CN109016823A (en) * | 2018-06-06 | 2018-12-18 | 苏州安特实业有限公司 | A kind of multiplex priting process units |
| CN210390444U (en) * | 2019-07-06 | 2020-04-24 | 东莞市安色机械制造有限公司 | UV screen printing machine capable of quickly printing for two times |
| CN211683949U (en) * | 2019-12-16 | 2020-10-16 | 深圳市百力成科技有限公司 | Full-automatic silk screen printing machine of polychrome |
| CN111532034A (en) * | 2020-05-26 | 2020-08-14 | 云南岭东印刷包装有限公司 | Printed matter two-dimensional code spouts sign indicating number and detects integrated device |
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| Publication number | Publication date |
|---|---|
| CN113715537A (en) | 2021-11-30 |
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