What is the coating-free of UV flatbed machine? How to avoid coating? What are the advantages?
These three are difficult problems that plague new users. If the difference between them is not well understood, it is easy to cause a lot of trouble in the use of later equipment, and serious may buy equipment that is not available at all, and waste money.
coating-free UV flatbed machine means that when printing part of the raw material, printing can be started without pre-printing the surface of the raw material. It does not mean that all raw materials can avoid coating printing. This coating-free printing is conditional.
For example, the coating can be avoided on the surface of plastic materials, such as mobile phone shells and notebook shells. The common gypsum ceilings in building materials can also avoid coating printing; but some cannot avoid coating printing, such as glass, glazed tiles, metals, and other materials with high surface density and lubricating materials that cannot be directly printed.
Then, how do you avoid coating?
The coating-free feature is actually determined by the ink. The corrosive nature of the UV ink itself can cause subtle (invisible to the naked eye) corrosion to the surface of the raw material. During this process, the pigment components in the ink can adhere to the raw material. Appearance, realize the whole printing process.
Of course, there are also some inks that are free of coating on the glass. In fact, it is added with a distributed chemical agent. It seems that one process is missing, but the loss is greater. If it is an industrial sprinkler, no problem. If the small nozzle is selected, the purity of the ink will be reduced, and the impurities will increase. The result is that the nozzle is blocked in a very short time and is scrapped.
Everyone who does printing knows that printing materials such as glass, ceramic tiles, and metals cannot be directly printed. You need to do some coating treatment on the raw materials to print.
So first of all, let’s talk about the advantages of using coatings:
1. Drying speed
The fast treatment fluid is made of special chemical materials, and it dries in about three minutes after spraying, especially on the more lubricious materials such as glass, porcelain, and metal.
2. Better printing quality
If it is directly printed on some raw materials, it is mainly lubricating and non-absorbent raw materials, which has a poor effect, and the effect is extraordinary after selecting the treatment liquid. Whether the material is bent or folded or placed for an extended period of time, the surface layer of the material will not be cracked or faulted.
3. Wear-resistant and waterproof
Due to the adhesive component in the treatment liquid ingredients, the adsorption power of the ink and the raw materials after printing is very good, which is far more than the abrasion resistance of the untreated condition. The water resistance of the raw materials after the treatment liquid is also far exceeded. The coating condition is multiple.
4. It is very suitable for some special industries
The treatment fluid has the characteristics of flexibility, transparency, impact resistance, etc., which is an indispensable new process for certain industries.
Customers who have used eco-solvent flatbed printers know that 90% of materials such as glass, ceramic tiles, metal, leather, etc. must be coated with this machine. Because the eco-solvent ink directly prints the pattern, there is a great possibility of ink pile up, slow drying speed, poor printing and inkjet effect, etc. To do the pre-printing treatment, it is also the coating.
