According to different products, we can be divided into graphic screen printing and industrial screen printing. With this "classification", the use of UV inks can be explained in more detail.
1, graphical screen printing
Typical applications of conventional graphic printing are the printing of poster display stands, posters, and shopping guide signs.
Advertising materials, box printing, post-press finishing and glazing are also included in this colorful application area. Therefore, UV inks are commonly used in the graphic field.
The typical characteristics of this new type of ink technology are screen stability and color accuracy, which ensures that the repetitively printed job can achieve accurate color reproduction.
Applications in the graphics area may have a range of UV-lighting aids that can be finished in selective or entire areas, or they can be used as protective glossy surfaces to enhance the durability of outdoor products.
2, industrial screen printing
There are many types of this application, currently being manufactured by large manufacturers "in factory" or through suppliers to industrial related applications such as printing contractors.
Due to the constant demand for new solutions for special tasks, industrial screen printing continues to be applied in the future, and screen printing often provides the best solution. Here, the application of UV inks will be many, and new solutions using new technologies are decisive factors for future development and success.
In the field of industrial applications, people's demand for productivity, environmental protection and application security will also continue to increase.
3, CD-ROM
This is an extremely important application field and has achieved rapid development in a very short period of time. Optical disks include music and digital storage media such as CDs, CD-ROMs, CD-Rs, and DVDs. Screen printing is very suitable for this complex, multi-application area.
For example, long-printing, the best printing quality of the four-color screening ink is a small dot gain, or a high sharpness of the negative text, which has become a key feature because the end-user's quality consciousness has been improved.
Currently, optical disks are printed exclusively using a UV-curable ink system. They meet the requirements of mechanical technology and guarantee the necessary operational reliability. UV inks can operate at speeds of at least 100 discs per minute and guarantee the lowest possible interaction of the ink with the disc information layer.
Wide color range, including the following dark shades:
Bright and dark metallic main colors and fluorescent dark shades
Suitable for many mixed colors of all current color standard systems
A special opaque white and black
The bottom of the digital inkjet CD light oil
4, packaging
"Show what is inside on the outside." In order to ensure that product information, company logos, etc. are directly printed on bottles, tubes, and containers of various materials, this is a number of tasks for UV screen printing.
The requirement of this application is high opacity, especially on colored substrates, the surface gloss gives an attractive appearance; the product has good anti-wear properties. Of course, good softness of the ink layer is very important for applications on various substrates such as organic glass, PE, PP and PVC, or polyester. Previously, solvent-based inks were mainly used in this area, but now, environmental protection and faster UV technology dominate.
This part of the application also requires highly reactive inks that can be used on machines up to 100 rpm.
5, the label
Label printing is closely linked to packaging because labels provide unique, informative, informative, informative, explanatory content, applications, and places of origin.
In addition, a properly designed label can further provide an attractive visual appearance, thereby increasing the value of the product.
In general, labels are usually produced using high-speed combined rotary presses. In addition to letterpress and flexo printing presses, there are one or more screen printing stations with a speed of 100 meters/minute. In this combination, UV technology has a real advantage, because the highly reactive and fast curing ink system is the basis of this innovative production process.
Good opacity on dark print materials, high gloss or matte inks, soft ink film, and mechanical resistance make UV screen printing an indispensable label print. Other strengths have some special effects, such as fluorescence, bronze, pearlescent, and security codes.
6, documents
Checks, credit cards and phone cards, as well as the production of clubs or exquisite cards, use not only various synthetic materials but also different printing methods. Therefore, the screen printing ink must be compatible with other printing methods such as offset printing ink. They are used for screen printing in conjunction with UV-curable glossy, matt or structurally lustrous inks. By mixing various UV brightening oils, special effects can be produced on the surface.
However, the widespread application of UV inks in this area is limited to surface printing due to improper lamination, that is, it is impossible to produce sufficient adhesive properties between the ink film and the surface layer.
7, billboards, dials
The logo is part of our everyday life and is also an information or advertising board, a traffic sign, and a measuring scale and household equipment. UV inks are also increasingly used in printing materials that are not easily printable, such as aluminum or other metals.
The infinite stability, high gloss, and the best chemical and mechanical resistance of screens for fine printing are other representative features of UV inks in this application.
8, glass and ceramics
A new rule in the European Packaging Guidelines is that the percentage of dangerous heavy metals in glass packaging must be drastically reduced. As a result, this application is expected to be completely new, as many IG printers still use lead-chromium-containing heavy metals. Ceramic baking inks, these inks are used in the screen printing process and then baked at a temperature of 600°C.
As an alternative method, the study does not use heavy metal-containing pigments; here, it should be emphasized that on the one hand, due to the use of a small UV drying device and rapid curing, space and energy can be saved, on the other hand, higher productivity can be guaranteed and Fast processing time.
Just as today, in the future, UV inks will play an important role in this field, and this is convincing with its good resistance.
9, membrane switch
Through the membrane switch operation, the operation of the electronic circuit and the controller is simple and convenient, and has high functional safety.
Membrane switches require high resistance to wet and anti-cleaning agents and excellent softness to accommodate the exact life of the part. By using a modern screen printing process, color printing is performed in the functional area of ​​the dedicated film, the high opacity of the light-proof substrate, the best adhesion and scratch resistance, and the softness of the ink are all produced in these complicated and high The necessary prerequisite for quality products.
The UV inks used to press membrane switches are not yet dominant in this application. At present, the combination of solvent-based inks and UV inks for the finest level of printing is a trend, and in the next few years, more and more attention will be paid to pure UV technology.
10. Auto parts
Speedometers or dashboards are produced with the best quality, and the safety requirements are completely satisfactory. Screen printing increasingly faces the highest demands of more complex designs, such as transparent shades of lighting.
However, the use of UV inks is still limited, that is, when the ink is required to have "optimal" resistance under conditions of extreme changes in temperature and humidity, through so-called "climate tests."
Solvent-based inks still have an advantage in this area, but the trend toward the use of UV inks has become clear and has now been successfully combined with solvent-based inks.
11, mobile advertising
Mobile advertising refers to long-life, high-quality advertisements printed on self-adhesive film, not only for trucks, cars, buses and trains, but also for ships and various containers, and for special applications on airplanes.
Chemical and mechanical resistance requirements such as resistance to vehicle rinsing and painting remover must be achieved. For long-term outdoor applications, the pigment used in the ink formulation must have high resistance to fading.
When printed on self-adhesive foils, the bond strength must not be impaired in any way, and it must be ensured that no residue will remain when exposing for several years, and the flexibility of the film is required for prints requiring long-term guarantees. Brittleness also plays an important role and should be printed on high-quality PVC film.
Specially developed high-pigment 4-color screening UV ink system, it has entered the field. The soft ink film can also be attached to the bends, convex legs and rivets. For long prints, UV inks are the most advantageous because they have unlimited screen stability and hue accuracy. Screen printers like these qualities, especially for wide-format and multiple-print jobs.
12, the panel
The decisive factors in this application are the strict requirements for chemical resistance, high temperature resistance, steam and daily wear. Solvent-based inks have dominated so far.
The use of UV inks has many advantages, such as excellent screen stability, fine printing on the panel, and long copy reproduction. A good compromise has been made by combining the hue of UV inks with a solvent-based ink as a shielding layer.
Compared with the total amount of screen printing ink and bright oil, UV curing system has been continuously developed in the past few years. As mentioned above, its advantages have been actively demonstrated in some application fields. Technology is almost exclusively applied to the production of some products.
Good examples are the optical disc industry and container printing, which show their advantages in both the direct printing of plastic packages and the high quality labels produced by rotary screen printing. Very simply, without UV technology, the productivity of multicolor printers cannot be greatly increased.
In many graphic screen printing applications, UV inks and gloss oils have become commonplace, such as printing posters, city lighted poster light boxes, or posters with multicolor printers. At present, new machines are being equipped with UV drying systems in all these markets.
This positive development will continue in the next few years. In many applications, UV inks will further increase productivity and ultimately improve print quality.
1, graphical screen printing
Typical applications of conventional graphic printing are the printing of poster display stands, posters, and shopping guide signs.
Advertising materials, box printing, post-press finishing and glazing are also included in this colorful application area. Therefore, UV inks are commonly used in the graphic field.
The typical characteristics of this new type of ink technology are screen stability and color accuracy, which ensures that the repetitively printed job can achieve accurate color reproduction.
Applications in the graphics area may have a range of UV-lighting aids that can be finished in selective or entire areas, or they can be used as protective glossy surfaces to enhance the durability of outdoor products.
2, industrial screen printing
There are many types of this application, currently being manufactured by large manufacturers "in factory" or through suppliers to industrial related applications such as printing contractors.
Due to the constant demand for new solutions for special tasks, industrial screen printing continues to be applied in the future, and screen printing often provides the best solution. Here, the application of UV inks will be many, and new solutions using new technologies are decisive factors for future development and success.
In the field of industrial applications, people's demand for productivity, environmental protection and application security will also continue to increase.
3, CD-ROM
This is an extremely important application field and has achieved rapid development in a very short period of time. Optical disks include music and digital storage media such as CDs, CD-ROMs, CD-Rs, and DVDs. Screen printing is very suitable for this complex, multi-application area.
For example, long-printing, the best printing quality of the four-color screening ink is a small dot gain, or a high sharpness of the negative text, which has become a key feature because the end-user's quality consciousness has been improved.
Currently, optical disks are printed exclusively using a UV-curable ink system. They meet the requirements of mechanical technology and guarantee the necessary operational reliability. UV inks can operate at speeds of at least 100 discs per minute and guarantee the lowest possible interaction of the ink with the disc information layer.
Wide color range, including the following dark shades:
Bright and dark metallic main colors and fluorescent dark shades
Suitable for many mixed colors of all current color standard systems
A special opaque white and black
The bottom of the digital inkjet CD light oil
4, packaging
"Show what is inside on the outside." In order to ensure that product information, company logos, etc. are directly printed on bottles, tubes, and containers of various materials, this is a number of tasks for UV screen printing.
The requirement of this application is high opacity, especially on colored substrates, the surface gloss gives an attractive appearance; the product has good anti-wear properties. Of course, good softness of the ink layer is very important for applications on various substrates such as organic glass, PE, PP and PVC, or polyester. Previously, solvent-based inks were mainly used in this area, but now, environmental protection and faster UV technology dominate.
This part of the application also requires highly reactive inks that can be used on machines up to 100 rpm.
5, the label
Label printing is closely linked to packaging because labels provide unique, informative, informative, informative, explanatory content, applications, and places of origin.
In addition, a properly designed label can further provide an attractive visual appearance, thereby increasing the value of the product.
In general, labels are usually produced using high-speed combined rotary presses. In addition to letterpress and flexo printing presses, there are one or more screen printing stations with a speed of 100 meters/minute. In this combination, UV technology has a real advantage, because the highly reactive and fast curing ink system is the basis of this innovative production process.
Good opacity on dark print materials, high gloss or matte inks, soft ink film, and mechanical resistance make UV screen printing an indispensable label print. Other strengths have some special effects, such as fluorescence, bronze, pearlescent, and security codes.
6, documents
Checks, credit cards and phone cards, as well as the production of clubs or exquisite cards, use not only various synthetic materials but also different printing methods. Therefore, the screen printing ink must be compatible with other printing methods such as offset printing ink. They are used for screen printing in conjunction with UV-curable glossy, matt or structurally lustrous inks. By mixing various UV brightening oils, special effects can be produced on the surface.
However, the widespread application of UV inks in this area is limited to surface printing due to improper lamination, that is, it is impossible to produce sufficient adhesive properties between the ink film and the surface layer.
7, billboards, dials
The logo is part of our everyday life and is also an information or advertising board, a traffic sign, and a measuring scale and household equipment. UV inks are also increasingly used in printing materials that are not easily printable, such as aluminum or other metals.
The infinite stability, high gloss, and the best chemical and mechanical resistance of screens for fine printing are other representative features of UV inks in this application.
8, glass and ceramics
A new rule in the European Packaging Guidelines is that the percentage of dangerous heavy metals in glass packaging must be drastically reduced. As a result, this application is expected to be completely new, as many IG printers still use lead-chromium-containing heavy metals. Ceramic baking inks, these inks are used in the screen printing process and then baked at a temperature of 600°C.
As an alternative method, the study does not use heavy metal-containing pigments; here, it should be emphasized that on the one hand, due to the use of a small UV drying device and rapid curing, space and energy can be saved, on the other hand, higher productivity can be guaranteed and Fast processing time.
Just as today, in the future, UV inks will play an important role in this field, and this is convincing with its good resistance.
9, membrane switch
Through the membrane switch operation, the operation of the electronic circuit and the controller is simple and convenient, and has high functional safety.
Membrane switches require high resistance to wet and anti-cleaning agents and excellent softness to accommodate the exact life of the part. By using a modern screen printing process, color printing is performed in the functional area of ​​the dedicated film, the high opacity of the light-proof substrate, the best adhesion and scratch resistance, and the softness of the ink are all produced in these complicated and high The necessary prerequisite for quality products.
The UV inks used to press membrane switches are not yet dominant in this application. At present, the combination of solvent-based inks and UV inks for the finest level of printing is a trend, and in the next few years, more and more attention will be paid to pure UV technology.
10. Auto parts
Speedometers or dashboards are produced with the best quality, and the safety requirements are completely satisfactory. Screen printing increasingly faces the highest demands of more complex designs, such as transparent shades of lighting.
However, the use of UV inks is still limited, that is, when the ink is required to have "optimal" resistance under conditions of extreme changes in temperature and humidity, through so-called "climate tests."
Solvent-based inks still have an advantage in this area, but the trend toward the use of UV inks has become clear and has now been successfully combined with solvent-based inks.
11, mobile advertising
Mobile advertising refers to long-life, high-quality advertisements printed on self-adhesive film, not only for trucks, cars, buses and trains, but also for ships and various containers, and for special applications on airplanes.
Chemical and mechanical resistance requirements such as resistance to vehicle rinsing and painting remover must be achieved. For long-term outdoor applications, the pigment used in the ink formulation must have high resistance to fading.
When printed on self-adhesive foils, the bond strength must not be impaired in any way, and it must be ensured that no residue will remain when exposing for several years, and the flexibility of the film is required for prints requiring long-term guarantees. Brittleness also plays an important role and should be printed on high-quality PVC film.
Specially developed high-pigment 4-color screening UV ink system, it has entered the field. The soft ink film can also be attached to the bends, convex legs and rivets. For long prints, UV inks are the most advantageous because they have unlimited screen stability and hue accuracy. Screen printers like these qualities, especially for wide-format and multiple-print jobs.
12, the panel
The decisive factors in this application are the strict requirements for chemical resistance, high temperature resistance, steam and daily wear. Solvent-based inks have dominated so far.
The use of UV inks has many advantages, such as excellent screen stability, fine printing on the panel, and long copy reproduction. A good compromise has been made by combining the hue of UV inks with a solvent-based ink as a shielding layer.
Compared with the total amount of screen printing ink and bright oil, UV curing system has been continuously developed in the past few years. As mentioned above, its advantages have been actively demonstrated in some application fields. Technology is almost exclusively applied to the production of some products.
Good examples are the optical disc industry and container printing, which show their advantages in both the direct printing of plastic packages and the high quality labels produced by rotary screen printing. Very simply, without UV technology, the productivity of multicolor printers cannot be greatly increased.
In many graphic screen printing applications, UV inks and gloss oils have become commonplace, such as printing posters, city lighted poster light boxes, or posters with multicolor printers. At present, new machines are being equipped with UV drying systems in all these markets.
This positive development will continue in the next few years. In many applications, UV inks will further increase productivity and ultimately improve print quality.
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