CN108382090B - Embossing process imitating UV screen printing frosting effect - Google Patents
Embossing process imitating UV screen printing frosting effect Download PDFInfo
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- CN108382090B CN108382090B CN201810168490.4A CN201810168490A CN108382090B CN 108382090 B CN108382090 B CN 108382090B CN 201810168490 A CN201810168490 A CN 201810168490A CN 108382090 B CN108382090 B CN 108382090B
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- screen printing
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- frosting
- printing
- embossing
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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
- B41M1/24—Inking and printing with a printer's forme combined with embossing
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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
- B41M1/22—Metallic printing; Printing with powdered inks
-
- 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
- B41M1/26—Printing on other surfaces than ordinary paper
- B41M1/36—Printing on other surfaces than ordinary paper on pretreated paper, e.g. parchment, oiled paper, paper for registration purposes
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Abstract
The invention discloses an embossing process for simulating a UV screen printing frosting effect, which belongs to the technical field of printing and comprises the following steps of: a) converting a silk-screen printing product into a subsequent electro-engraving embossing plate file through a scanner and drawing software, b) setting the mesh point size to be 0.015-0.205 mm and the depth to be 0.1-0.3 mm, and c) engraving the required mesh point effect into an embossing plate used in the subsequent process through an electro-engraving machine; the treatment for carrying out the subsequent processing comprises the following steps: d) printing products are processed, e) the temperature is set to be 60-80 ℃, the pressure is set to be 40-60N, f) pressure paper is made, and the required silk-like screen sanding effect is achieved through local padding, pressure reduction and temperature rise and fall. The overproof indexes of volatile organic compounds, heavy metals, photoinitiator limitation and the like and the pollution to the environment are avoided, the frosting effect can be generated without any printing ink component, and the input and output capacity of the product is improved by about 5%.
Description
Technical Field
The invention relates to a printing process, in particular to an embossing process simulating a UV screen printing frosting effect, and belongs to the technical field of printing.
Background
The UV silk-screen frosting process is also called UV imitation metal etching printing process, and is characterized by that on the printing stock with metal mirror surface gloss (for example gold and silver card paper) a layer of uneven semitransparent printing ink is printed, and after the printing stock is solidified by means of UV ray (UV), the surface of the printing stock can produce metal surface similar to brightness and can produce etching or frosting effect.
The UV silk-screen frosted printing product has obvious etching effect and strong stereoscopic impression, gives people a thick and stable feeling, and is very prominent in texture. Has been widely applied to the printing of products such as cigarette labels, wine labels, advertisements, art pictures and the like.
Regarding printing of UV silk-screen frosting, the printing is applied to the printing and packaging industry for a long time, and the existing UV silk-screen frosting printing has the following problems:
1. has defects in environmental protection
At present, the requirement of the printing industry on sanitation and safety indexes such as limited quantity of Volatile Organic Compounds (VOCS), formaldehyde, heavy metals and photoinitiators is more and more strict, and due to the use of UV printing ink in the process of UV screen printing and frosting printing, volatile harmful gases generated mainly comprise sulfuric acid, nitric acid, carbon dioxide, formaldehyde, benzene, acetone and the like, heavy metals mainly comprise mercury, chromium and the like, and the overproof photoinitiator can be caused. The UV frosted ink for silk printing has poor adhesive force and flexibility, and is easy to explode and burst during die cutting.
2. The subsequent process treatment is difficult
① UV screen printing frosting is affected by paper, printing ink, UV drying and other factors, which can cause a series of defects of weak frosting effect, poor printing leveling property, unobvious frosting blooming effect, poor toughness of printed products and the like, and the subsequent treatment is difficult, thus having certain influence on the yield, quality and precision of printed products.
② UV screen printing and frosting printing can generate pollutants in the same way as other printing modes, air and water are polluted, and the process of strengthening the air and water pollution is a time-consuming, material-consuming and labor-consuming project.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide an embossing process with a UV-imitated silk-screen frosting effect, wherein an alloy copper plate which is well engraved according to a target mechanism effect is heated by a stamping machine to press a required pattern, the effect similar to frosting is achieved, the influence of factors such as printing ink, drying degree and the like is avoided, the environment is not polluted, the subsequent treatment is easier, and the frosted printing effect can be achieved without using the printing ink.
In order to achieve the purpose, the engraved alloy copperplate and a subsequent bronzing machine are combined and pressed at a proper temperature to achieve an ideal frosting effect, and the method is specifically realized by the following technical scheme.
Firstly, the processing of the mechanism file comprises the following steps:
a) converting the silk-screen printing product into a subsequent electro-engraving embossing plate file through a scanner and drawing software;
b) setting the mesh size of a screen printing product to be 0.015-0.205 mm and the depth to be 0.1-0.3 mm;
c) engraving the required dot effect into an embossing plate used in the next procedure by using an electric engraving machine;
secondly, the post-processing treatment is carried out, and comprises the following steps:
d) the screen printing product is calibrated on a machine;
e) the temperature of the machine is set to be 60-80 ℃, and the overall pressure is set to be 40-60N;
f) pressure paper is made, a rubber cloth with the thickness of 0.2-0.4 mm is used at the bottom, and the required frosting effect of the silk-like net is achieved through local padding, pressure reduction and temperature rise and fall.
In order to make the frosting effect more obvious and ideal, the screen printing product is preferably a printing product prepared by a transfer method, such as gold and silver card paper, in the selection of printing raw materials.
Considering the dot diffusivity of screen printing, under the condition that the dot depth is not changed, the required dot effect is engraved into the embossing plate used in the next procedure by an electric engraving machine for manufacturing the gold stamping plate after the plate-making dots are increased by 0.005 mm on the original basis.
Preferably, the present invention uses a 0.3mm thick blanket instead of a backing film and further enhances the desired screen sanding effect by local padding, pressure reduction and temperature increase and decrease.
The invention has the beneficial effects that: the embossing process can replace the traditional screen printing and sanding process, avoids the exceeding of sanitation and safety indexes such as the limit of volatile organic compounds, heavy metals and photoinitiators and the pollution to the environment, can generate the sanding effect without any ink component, solves a series of defects of weak sanding effect, poor printing leveling property, unobvious sanding blooming effect and the like caused by factors such as paper, ink and UV drying by UV screen printing and sanding, and improves the input-output rate of products by about 5%.
Detailed Description
To more clearly illustrate embodiments of the present invention or solutions in the prior art, the present invention will now be described more fully hereinafter with reference to the accompanying drawings, in which embodiments of the invention are shown. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these examples provide those skilled in the art with an understanding of the teachings of the present invention.
Unless otherwise defined, terms (including technical and scientific terms) used herein should be construed to have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms used herein should be interpreted as having a meaning that is consistent with their meaning in the context of this specification and the relevant art, and should not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
Example 1
The embossing process for forming the UV silk-screen frosting imitating effect on the surface of the gold and silver paperboard comprises the following steps:
firstly, the processing of the mechanism file comprises the following steps:
a) converting the gold and silver cardboard prepared by the transfer method into a subsequent electro-engraving embossing edition file by a scanner and drawing software, wherein the drawing software is preferably Photoshop or Illustrator;
b) considering the dot diffusivity of screen printing, if the original dot size is 0.01 mm and the dot depth is 0.2mm, the dot size should be set to 0.015 mm when the dot size of a screen printing product is set, and the dot depth is still kept to be 0.2mm, namely, the dot size is increased by 0.005 mm on the original basis under the condition that the dot depth is kept to be unchanged;
c) engraving the required dot effect into an embossing plate used in the next procedure by using an electric engraving machine;
secondly, the post-processing treatment is carried out, and comprises the following steps:
d) the screen printing product is calibrated on a machine;
e) the machine temperature was set to 60 ℃ and the overall pressure was set to 40N;
f) the pressure paper is made, the bottom of the pressure paper is provided with a rubber cloth with the thickness of 0.2mm, and the required frosting effect of the silk-like net is achieved through local padding, pressure reduction and temperature rise and fall.
Example 2
The embossing process for forming the UV silk-screen frosting imitating effect on the surface of the gold and silver paperboard comprises the following steps:
firstly, the processing of the mechanism file comprises the following steps:
a) converting the gold and silver cardboard prepared by the transfer method into a subsequent electro-engraving embossing edition file by a scanner and drawing software, wherein the drawing software is preferably Photoshop or Illustrator;
b) considering the dot diffusivity of screen printing, if the original dot size is 0.1 mm and the dot depth is 0.1 mm, the dot size should be set to 0.105 mm when the dot size of a screen printing product is set, and the dot depth is still kept to be 0.1 mm, namely, the dot size is increased by 0.005 mm on the original basis under the condition that the dot depth is kept to be unchanged;
c) engraving the required dot effect into an embossing plate used in the next procedure by using an electric engraving machine;
secondly, the post-processing treatment is carried out, and comprises the following steps:
d) the screen printing product is calibrated on a machine;
e) the machine temperature was set to 70 ℃ and the overall pressure was set to 50N;
f) the pressure paper is made, the bottom of the pressure paper is provided with a rubber cloth with the thickness of 0.3mm, and the required frosting effect of the silk-like net is achieved through local padding, pressure reduction and temperature rise and fall.
Example 3
The embossing process for forming the UV silk-screen frosting imitating effect on the surface of the gold and silver paperboard comprises the following steps:
firstly, the processing of the mechanism file comprises the following steps:
a) converting the gold and silver cardboard prepared by the transfer method into a subsequent electro-engraving embossing edition file by a scanner and drawing software, wherein the drawing software is preferably Photoshop or Illustrator;
b) considering the dot diffusivity of screen printing, if the original dot size is 0.2mm and the dot depth is 0.1 mm, the dot size should be set to 0.205 mm when the dot size of a screen printing product is set, and the dot depth is still kept to be 0.1 mm, namely, the dot size is increased by 0.005 mm on the original basis under the condition that the dot depth is kept to be unchanged;
c) engraving the required dot effect into an embossing plate used in the next procedure by using an electric engraving machine;
secondly, the post-processing treatment is carried out, and comprises the following steps:
d) the screen printing product is calibrated on a machine;
e) the temperature of the machine is set to 80 ℃, and the overall pressure is set to 60N;
f) the pressure paper is made, the bottom of the pressure paper is provided with a rubber cloth with the thickness of 0.4mm, and the required frosting effect of the silk-like net is achieved through local padding, pressure reduction and temperature rise and fall.
Example 4
The embossing process for forming the UV silk-screen frosting imitating effect on the surface of the gold and silver paperboard comprises the following steps:
firstly, the processing of the mechanism file comprises the following steps:
a) converting the gold and silver cardboard prepared by the transfer method into a subsequent electro-engraving embossing edition file by a scanner and drawing software, wherein the drawing software is preferably Photoshop or Illustrator;
b) considering the dot diffusivity of screen printing, if the original dot size is 0.1 mm and the dot depth is 0.3mm, the dot size should be set to 0.105 mm when the dot size of a screen printing product is set, and the dot depth is still kept to be 0.3mm, namely, the dot size is increased by 0.005 mm on the original basis under the condition that the dot depth is kept to be unchanged;
c) engraving the required dot effect into an embossing plate used in the next procedure by using an electric engraving machine;
secondly, the post-processing treatment is carried out, and comprises the following steps:
d) the screen printing product is calibrated on a machine;
e) the machine temperature was set at 75 ℃ and the overall pressure was set at 50N;
f) the pressure paper is made, the bottom of the pressure paper is provided with a rubber cloth with the thickness of 0.3mm, and the required frosting effect of the silk-like net is achieved through local padding, pressure reduction and temperature rise and fall.
Comprehensive analysis of a plurality of test data shows that the gold and silver card paper prepared by a transfer method has the best frosting effect in the selection of printing raw materials, the equipment pressure is set to be 50N, the temperature is set to be 60 ℃, the gold and silver card paper can be adaptively adjusted between 60 ℃ and 80 ℃ as required, but the temperature is not more than 80 ℃, products are easily scalded due to overhigh temperature, a rubber cloth with the thickness of 0.3mm is used for replacing a bottom film, and the required frosting effect of the silk-like screen can be achieved by using a local pad, pressure reduction and temperature rise and fall.
Compared with the traditional UV screen printing and frosting process, the UV screen printing and frosting process has the advantages that the substitution effect can be achieved, the excessive exceeding of sanitation and safety indexes such as the limit of volatile organic compounds, heavy metals and photoinitiators and the pollution to the environment are avoided, the frosting effect can be generated without any printing ink component, a series of defects that the frosting effect is not strong, the printing leveling property is poor, the frosting blooming effect is not obvious and the like caused by the UV screen printing and frosting to factors such as paper, printing ink and UV drying are overcome, and the input and output rate of products is improved by about 5%.
While the invention has been described herein with reference to specific aspects, features and illustrative embodiments of the invention, it will be appreciated that the invention is not thus limited in its application, but extends to and encompasses numerous other variations, modifications and alternative embodiments, as will suggest themselves to those of ordinary skill in the art to which the invention pertains, based on the disclosure herein. Accordingly, any modification, equivalent replacement, improvement or the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. An embossing process simulating UV screen printing frosting effect comprises the treatment of a mechanism file and the subsequent processing, and is characterized in that,
the processing of the mechanism file comprises the following steps:
a) converting the silk-screen printing product into a subsequent electro-engraving embossing plate file through a scanner and drawing software;
b) setting the mesh size of a screen printing product to be 0.015-0.205 mm and the depth to be 0.1-0.3 mm;
c) engraving the required dot effect into an embossing plate used in the next procedure by using an electric engraving machine;
the post-processing treatment comprises the following steps:
d) the screen printing product is calibrated on a machine;
e) the temperature of the machine is set to be 60-80 ℃, and the overall pressure is set to be 40-60N;
f) preparing pressure paper, and performing local padding, pressure reduction and temperature rise and drop to achieve the required silk-like screen sanding effect;
under the condition that the depth of the dots is not changed, the dots are enlarged by 0.005 mm on the original basis, and then the required dot effect is engraved into the embossing plate used in the next procedure by an electric engraving machine for manufacturing the embossing plate.
2. The embossing process simulating the UV screen printing frosting effect as claimed in claim 1, wherein: the silk-screen printing product is a printing product prepared by a transfer method.
3. The embossing process simulating the UV screen printing frosting effect as claimed in claim 1, wherein: the overall pressure was set to 50N.
4. The embossing process simulating the UV screen printing frosting effect as claimed in claim 1, wherein: the bottom of the rubber blanket is 0.2-0.4 mm thick instead of the bottom film.
5. The embossing process simulating the UV screen printing frosting effect as claimed in claim 4, wherein: the thickness of the rubber blanket is 0.3 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201810168490.4A CN108382090B (en) | 2018-02-28 | 2018-02-28 | Embossing process imitating UV screen printing frosting effect |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810168490.4A CN108382090B (en) | 2018-02-28 | 2018-02-28 | Embossing process imitating UV screen printing frosting effect |
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| CN108382090B true CN108382090B (en) | 2020-02-18 |
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| CN113183651A (en) * | 2020-10-12 | 2021-07-30 | 安徽美阅文化发展股份有限公司 | Printing process for forming crack effect on surface of printed matter and printed matter thereof |
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| CN201395743Y (en) * | 2009-03-31 | 2010-02-03 | 浙江美浓丝网印刷有限公司 | Transferring frosted laser paper |
| CN102002894B (en) * | 2010-09-28 | 2012-12-12 | 博源科技材料（烟台）有限公司 | Electron beam-cured coating-containing vacuum aluminized sanding card paper and manufacturing method thereof |
| CN102002895B (en) * | 2010-09-28 | 2012-10-17 | 博源科技材料（烟台）有限公司 | Vacuum aluminum plating ground paperboard and production method thereof |
| CN102501663B (en) * | 2011-12-27 | 2014-01-01 | 广东壮丽彩印股份有限公司 | Production process for forming frosted effect on surfaces of gold and silver paperboards |
| CN205853518U (en) * | 2016-07-18 | 2017-01-04 | 深圳市东冠包装印刷纸品有限公司 | Rainbow code anti-counterfeiting laser holocard paper |
| CN107672282A (en) * | 2017-11-06 | 2018-02-09 | 江苏大亚新型包装材料有限公司 | The production method of frosted paperboard |
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