When processing this special coating, OwnLikes correctly selects the coating liquid type according to the surface type of the self-adhesive material selected, and sets the coating amount, oven temperature, processing speed and other parameters to ensure that the coating liquid can be thoroughly dried. If a special coating is applied to the surface of a non-absorbent self-adhesive material such as a film or aluminum foil, the user must conduct a reasonable corona treatment of the material before printing and coating.
When processing this special coating, OwnLikes correctly selects the coating liquid type according to the surface type of the self-adhesive material selected, and sets the coating amount, oven temperature, processing speed and other parameters to ensure that the coating liquid can be thoroughly dried. If a special coating is applied to the surface of a non-absorbent self-adhesive material such as a film or aluminum foil, the user must conduct a reasonable corona treatment of the material before printing and coating.
To improve the surface tension of the material, to ensure that the coating liquid can be evenly spread on the surface of the material. In order to ensure the stability of coating quality, parameters such as coating amount, coating temperature, corona treatment power, material surface tension, and coating speed set during coating operation are recorded to form fixed process parameters, so as to ensure the consistency of processing between batches. Depending on the type of coating liquid, the validity period of the coated digital self-adhesive material can generally be up to a few weeks to a year.
In short, users can choose white line processing or purchase specially coated digital self-adhesive materials directly from label material suppliers according to the cost of the digital self-adhesive materials used and the white body technical capability.
HP Indigo certification tests for digital self-adhesive materials mainly cover the following aspects:
1.Continuous printing performance of the material:
2.ink transfer performance and transfer quality;
3.The adhesion between the ink and the material, and the scratch resistance of the ink;
4.Reproducibility of highlight points, fine line quality, and integrity of image edges:
5.Compatibility with rubber blanket, test whether it will produce the memory effect of rubber blanket;
6.The size of the temperature setting range of the rubber blanket, the wider the range, the better the compatibility of the material.
At present, the material suppliers certified by HPIndigo are Avery Dennison, UpM Blue Label, OwnLikes, ExxonMobilHanitaCoatings, Intercoat, MasterpieceGraphix and so on.
The characteristics of digital self-adhesive material
The digital self-adhesive material is a substrate material that is coated with a special coating on the surface of the ordinary self-adhesive material to increase the adhesion of the ink on its surface. For the quality of digital self-adhesive materials, the uniformity of the special coating on the surface is mainly investigated, and its binding force with the self-adhesive surface material. In view of the current domestic users are not many, in this regard there is no complete data for reference, usually label printing companies are in the printing test, directly test the color fastness of the ink, and in order to evaluate the quality of the digital self-adhesive material and whether it is ultimately available.
Conventional PET Adhesive Material:
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| Matte White Adhesive Material | Gloss White Adhesive Material | Transparent Adhesive Material |
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| Gloss Silver Adhesive Material | Gloss Gold Adhesive Material | Matte Silver Adhesive Material |
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OwnLikes accepts other color customizations such as glossy black, matte black, red, yellow, green, blue, holographic, etc To Customize, Please contact OwnLikes customer service |
| Brushed Silver Adhesive Material | Brushed Gold Adhesive Material |
The influence of digital printing ink on the properties of digital self-adhesive material
An important factor in determining printing quality is the adsorption of the substrate to the ink. At present, traditional self-adhesive materials can maintain good adsorption of ink almost without or only by taking simple measures. For example, the self-adhesive material with ordinary paper as the surface material, due to the characteristics of the paper fiber, the water-based ink, solvent-based ink and UV ink commonly used in printing methods such as letterpress, gravure and flexo printing have good adsorption, without any treatment. For the self-adhesive material of the film surface, its adsorption of the ink is poor, but by corona treatment of the film surface, it can effectively improve the adsorption capacity of the ink. At present, there are also some large material suppliers such as Avery Dennison launched a film self-adhesive material with a special surface coating, which can eliminate the corona processing process of label printing enterprises. It can be seen that the traditional self-adhesive material has been relatively mature.
For digital self-adhesive materials, on the one hand, it has just started, and there are still some technologies to be improved; On the other hand, digital printing inks are different from traditional printing inks, and some specific requirements are also put forward for digital self-adhesive materials.
Digital self-adhesive material production status
Because digital printing is still in its infancy in China's label printing industry, fewer label printing companies are applying this technology, resulting in higher printing costs than traditional printing costs. In order to reduce costs, most label digital printing companies have adopted the method of self-coating the surface coating. Although intuitively the self-coating method is conducive to reducing costs, its potential problems and invisible costs cannot be ignored. Due to the lack of professional coating technical capabilities and experience of label digital printing enterprises, it is easy to increase the waste and loss of materials, and also increase the material inventory. If the coating is uneven, it is inevitable to stop often, affecting the normal production efficiency, and speeding up the depreciation of label digital printing equipment.
With the continuous development of the digital printing market, the author believes that more and more label digital printing enterprises will choose digital self-adhesive materials pre-coated by a third party, because it can help label printing enterprises to realize the value of digital printing **** at the best comprehensive cost. The specific performance is as follows: first, it can reduce the material inventory of label digital printing enterprises; Secondly, the downtime of digital printing machine is shortened; Third, reduce the material waste in the coating process, extend the shelf life of the pre-coated surface coating material, and continue to provide stable quality digital self-adhesive materials.
