Application of the hottest UV ink in industry

2022-07-26
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Application of UV ink in the industrial field

as early as the early 1970s, due to the continuous strengthening of people's awareness of environmental protection, the first batch of UV curing ink without volatile substances was successfully developed. This environment-friendly and safe ink has many excellent properties of traditional solvent-based ink, such as fast curing speed, improving the reliability of phase change materials in porous media with the help of capillary effect, etc. In the years when UV ink was developed, if the plate printing and image making industry can be widely used, UV ink will enter the market more and occupy a strong advantage. However, there has not been much amazing progress in occupying the industrial market

nameplate printing, coating and film switch printing manufacturers, which specially use polycarbonate and polyester as printing materials. Early UV inks, like new products that have not been tested, have great immeasurability. The printers found that these UV inks were not reliable for some applications and some printing materials. The disadvantages of these early UV inks include poor covering power, poor flexibility of embossing and die cutting, and poor compatibility with various adhesives

with the continuous improvement of products by ink manufacturers, researchers gradually realize that there is a lack of information about UV ink and its use, and the training can not keep up. Changing from solvent-based ink to UV ink is not just a problem of converting ink. Printing workers must be trained to understand the working principle and production process of UV ink

with the cooperation of ink suppliers, many manufacturers of nameplate printing, coating and film switch printing overcame these early obstacles and successfully used UV ink in production. However, in the past 10 years, the increase of UV ink use is only equal to the growth of normal sales in these markets. In other words, it seems that the industrial printing factory has played an unfashionable joke by replacing solvent based ink with UV ink. The question is why does this happen? We have answered this question before. It is very useful to review the current status of UV technology for industrial applications

today's industrial UV ink

if we evaluate the current situation of UV ink, we will find that great changes have taken place since the successful development of UV ink. These changes make UV ink an ideal choice. UV ink manufacturers have improved their covering power, which can fully compete with solvent based inks. At the same time, some special formulas have been developed, which can be specially used for embossing, die cutting and thermoforming. There is no wrinkle on polycarbonate and other printing materials. The specimen with good UV ink forms a 180 degree zigzag with the support roller on the base by the force exerted by the bending center. The printability and curability make them obtain excellent results in three primary color printing

today's UV inks are compatible with many adhesives, including printable UV curable adhesives. The test results show that the new UV ink formulation can be printed and cured for up to 15 layers without poor lamination

the newly developed UV ink for plastic films and similar materials can be used for high-speed printing. Due to the large curing window, it is not easy to over cure. In fact, those special rules and high public relations restrictions have become a thing of the past. Finally, it should be noted that the range of substrates available for UV inks is much wider than before

curing equipment has also made great progress. The UV drying device is equipped with a good reflector, which can be cured directly through several channels to reduce the heat. The curing lamp can be adjusted to the most effective wavelength. The test equipment is also very easy to use. It can maintain the best curing performance of the curing system in the monitoring operation

reasons for not using UV inks

although UV inks have been greatly improved, some limitations of the initial use of UV inks by printing manufacturers and some of their previous experiences have caused them to have a certain aversion to this technology. At present, UV ink can meet almost 100% of nameplate printing and membrane switch manufacturers. But at present, the application of UV ink is far from reaching this level

at present, there are two main factors that hinder the wide application of UV technology. One is that people worry that it has some shortcomings, such as poor lamination performance and easy to produce creases; The other is not enough understanding of the great achievements made in the field of UV ink chemistry

although printing materials such as polyester present a challenge to the adhesion of UV ink, polycarbonate and other commonly used industrial materials are very suitable for UV printing. More importantly, due to the fast curing speed of UV ink, it is suitable for mass production of industrial printing materials. Fast operation speed greatly reduces the cost, so that those manufacturers using UV ink have a place in the fierce market competition. This is why many printing companies using UV technology often buy high-speed multi-color online printing lines

color matching is another area of great concern to ink manufacturers. However, many industrial printing manufacturers only recall the early UV inks, and it is true that the color matching accuracy was very limited at that time

today, many ink suppliers have invested in purchasing high-precision electronic measurement systems to improve the color matching ability of inks. As a result, most ink suppliers can now provide color matching guides for their main production lines, and many manufacturers have even obtained licenses to simulate Pantone tones. In addition, since there is a low-cost spectrophotometer for color measurement, when the printer finds that the color is biased Rb (2), he can correct it himself

finally, as the cost of UV ink is slightly higher than that of solvent based ink, some printing manufacturers believe that using UV ink will increase their total cost. However, a research report released by the international silk printing and Imaging Association shows that the use of UV ink can improve productivity and work efficiency, reduce ink scrap rate, and thus greatly save higher ink costs. The results show that it is cost-effective to purchase new curing equipment

uv ink conversion work

there is the most direct relationship between increasing the use of UV ink and improving productivity. However, if more and more industrial printers use UV ink, they may have some concerns that the shortcomings of UV ink will bring investment risks

it needs company wide support to make more people understand the advantages of UV technology and increase the utilization rate of UV ink. If you want to make the conversion of UV ink successful, you must first have the support of senior management. No matter whether the conversion is in progress or not, you must realize that using UV ink can reduce the release of VOC, improve productivity, reduce costs and increase benefits

when starting this conversion work, you can designate agents to work with them. The agent can be an employee of a printing company or an agent from outside, such as a representative of an ink company. Ink representatives are likely to be familiar with the conversion from solvent based ink to UV ink and have some experience

in fact, the conversion work is different for each workshop, depending on the application type of printed matter and the proficiency of technicians in UV technology. Some variables have a great impact on the time required for conversion and the process flow. These variables include the technical level of the printer operator, the substrate used, the performance of the printing equipment and related factors

once the agent is determined, this person should first formulate the conversion work plan and time process in detail, and send this material to the management department of the printing company. This is a very important link, which can make all staff work together to ensure the smooth progress and success of the conversion work

it is very helpful to have a system analysis program when formulating the conversion work plan, which can ensure that all factors in the conversion plan are taken into account. This analysis system includes the following four main steps:

1 data collection

2 data feedback

3 implementation

4 tracking

this analysis system can reflect the current situation and the latest 7 Non destructive testing instruments (magnetic particle flaw detector, X-ray flaw detector γ Radiographic flaw detector, ultrasonic flaw detector, eddy current flaw detector, acoustic emission detector, etc.); End purpose. As for the conversion from solvent based ink to UV ink, the current situation includes various processes, equipment, existing skills of employees and various external factors. The result we want is to increase the use of UV ink

in this analysis, the current technology and production organization structure should be considered first, including the following points:

* the type and performance of the machine used

* current status of UV curing equipment (need to add?)

* wire type

* box type

* plate making ability, procedures and standards

* type of photosensitive adhesive

* production process and equipment in the ink workshop

* type of substrate (material, size, etc.)

* processing procedures and equipment (embossing, die cutting, etc.)

* adopted printing data (fine level of clarity, number of lines, three primary colors or field, special color matching requirements, etc.)

* scraper type, hardness and edge performance

* repeated order history

* live parts are divided into groups according to the commonness between applications

* for workshops with certain production capacity, it is necessary to analyze the live parts that are not printed with UV ink to find out the reasons, such as whether they are caused by lack of equipment, size restrictions or poor compatibility of printing materials

a problem to be considered in data collection is the situation of production operators. The purpose of this procedure is to examine all skills in the whole operation process, including sales representatives, inspectors, user service personnel and other relevant personnel. But the most important thing is the skill evaluation of the production personnel, that is, the printer operators and the staff of the ink workshop

data feedback

after completing the internal and external evaluation, a data feedback meeting should be held so that the time schedule required for the conversion can be correctly formulated. The schedule shall indicate the equipment level, personnel training, organization of production site, alternation between procedures, arrangement of moving parts and other matters related to conversion

after the implementation

plan is formulated, it is time to start acting according to the schedule. First of all, we must ensure that UV ink is very suitable for the products of printing plants. The works of printing materials can be sent to ink manufacturers, who test the printing materials to identify the ink covering power, durability, adhesion, color and other properties, so as to provide the ink required by the printing plant. The next step is to purchase equipment and rearrange existing equipment

at the same time, employee training should be started. The key problem is that the ink manufacturer should participate in the training in person, so as to rapidly improve the technical level of employees. This kind of training should pay attention to two points: one is to operate with UV ink by hand, and the other is that the training site can be set in the printing workshop or ink production site. The second scheme is the most commonly used because it can avoid distractions and reduce the pressure in the workplace

from this point of view, the most

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