The difference between offset and flexo, the difference between flexo and offset

Flexo printing is uniquely flexible, economical, and beneficial to the environment; The offset printing is fine, rich in layers, suitable for mass printing, and the printing equipment can be used for multiple purposes, suitable for the characteristics of China's label market. However, sheet-fed offset printing is not suitable for films that do not have absorbent printing on the printing surface, because film labels are mostly roll-to-roll printing, which requires volatile dry inks.

Offset printing is a kind of lithographic printing, very simple offset printing is to use the rubber (blanket) to pass the printing method on the printing plate to the substrate, which is also the existence of blanket, this printing method is named. Blanket plays an irreplaceable role in printing, such as: it can make up for the unevenness of the surface of the substrate, make the ink fully transferred, it can reduce the transfer of water on the printing plate (see the role of water in printing) to the substrate and so on.

The above is only a general concept, we now usually talk about offset printing may be narrower, that is, there are three cylinders (printing plate, blanket, embossing) lithography printing method, in the south of our country this printing method is called offset printing.

Flexo printing is a type of direct printing and is known as flexographic printing due to the use of an image plate that has a flexible, raised face. The flexographic plate is glued to the plate cylinder, and the plate is fed with ink by an engraved metal anilox roller. Due to the high elasticity of flexographic plates, which can transfer liquid or grease inks to almost all types of materials, flexographic printing is light pressure printing.

Offset printing machine is suitable for printing paper, PS plate, printing principle, ink and water balance, characteristics of good printing dot effect.

Gravure printing machine electro-engraved metal plate or etched plate, suitable for printing plastic packaging or paper packaging, the advantage is that the ink color is stable and the speed is fast.

Flexo printing machine with flexographic or resin plate, environmental protection, fast speed, suitable for printing packaging, labels, a wide range of printable materials.

Silk screen printing machine with screen plate is suitable for printing in various materials, the ink color is full, suitable for outdoor advertising, signage, anti-counterfeiting printing, etc.

Guangzhou Jiaqi.

At the ESKO New Product Presentation on August 7th, they introduced a printing technique with concentric circles. It's worth looking into.

Oh, the landlord is wrong, it's the moderator who is right [m:07].

1.Look at the clarity of the print. The level of detail in the image is in the order of offset printing, gravure printing, and flexo printing. Generally speaking, offset printing has the highest number of screen lines, the image that can be printed is the clearest, and flexo printing is the worst.

2.Look at the saturation of the colors. Since most offset printing and gravure printing use oil-based ink, the color is relatively bright and the saturation is high, flexo printing is generally water-based ink, the color saturation is low, a bit like watercolor pigments, and there will be water ripples in the large-area printing part (when the printing quality is poor).

Gravure ink is the heaviest one, and the solid part of the print (a large area of color blocks of the same color) feels particularly thick. The color saturation is gravure, offset printing, and flexo printing.

3.Look at the product type. This can roughly distinguish gravure printing, offset printing, and flexo printing.

Generally, cartons are mostly flexographic printing (mineral water tanks, instant noodle boxes, etc.), fine product packaging is mostly offset printing (mobile phone boxes, cosmetic boxes, gift boxes, etc.), and cigarette packs are generally gravure printing, because the surface has some anti-counterfeiting effects and special processes, and some high-grade cartons also have gravure printing, which looks finer than flexo printing.

To put it simply, flexo tape is a kind of double-sided tape used to fix flexographic plates in flexographic production, which mainly plays an important role in stabilizing production and improving printing quality.

If you want a good flexo tape, I recommend to check out 3M products, its E-series, H-series are good choices, it is the first flexographic mounting tape on the market with a patented 3M Comply adhesive system, this series of tapes uses microporous exhaust technology, almost eliminates the problem of bulges caused by air bubbles in flexographic mounting, and greatly saves flexographic installation time. And when I read the product introduction, it said that one customer reduced the downtime of at least 45 minutes per shift when using 3M Comply adhesive tape. Therefore, friends in need can use it with confidence. Duan hand.

Flexo plate mounting tape is a kind of double-sided tape, which mainly has the following functions:

1. Fix the flexographic plate on the surface of the printing plate cylinder or plate mounting sleeve, so that the flexographic plate will not warp or displace during the printing process and ensure the normal printing.

2. By selecting the density of the foam core material of the mounting tape, the fine control of the printing pressure is realized, so as to match the best design of the flexographic plate, perfectly present the printing pattern and improve the printing quality.

3. Balance the vibration of the equipment and compensate for the system error.

The above are the three functions of flexo plate mounting tape. From the market, 3M's flexo tape is pretty good. It not only has different foam densities, but also is easy to load and unload the plate, which can extend the service life of the plate to a certain extent.

What's more, 3M's flexo tapes are easy to use and help improve productivity.

So if you want to choose flexo plate tape, then 3M's products should be a good choice. For example, E-series, H-series, L-series. Especially the L-series, the above advantages can be met by Jingling.

Plate mounting tape is one of the commonly used consumables in flexographic printing. So, what exactly does it play in the flexo printing process? What should I pay attention to in the process of use? Now Qingdao Bofa Technology **** will take you to understand!

The plate mounting tape is a double-sided tape, the main function is to fix the position of the printing plate, to ensure that the printing of the virtual wheel plate will not be warped, not falling off, not shifting during the printing process, to ensure the normal printing, and at the same time buffer part of the pressure on the printing plate, to a certain extent to improve the printing quality.

According to the different substrates, the plate mounting tape used for flexo printing can be divided into non-foam plate mounting tape and foam plate mounting tape.

1. Non-foam plate mounting tape:

Non-foam plate mounting tape is based on film, cloth, glass fiber cloth, etc., and is coated with rubber adhesive on both sides, which has the characteristics of high viscosity, strong initial degree, good flatness of the middle surface of the glue embedded, repeated positioning and high adhesion in long-term printing.

It is suitable for the printing industry, carton factory, woven bag factory, rubber bend Yushan bag factory and other printing industries to paste and fix various rubber plates and resin plates, which can be reused many times. Non-foam plate mounting tape itself is not elastic, and its effect on improving printing quality is relatively limited, and it is mainly used for printing ground, lines or simple mesh patterns, and has few market applications.

2. Foam plate mounting tape:

The base material of foam plate mounting tape is foam, which is higher than that of non-foam plate mounting tape, but because foam is compressible, it can significantly improve the printing quality, and is currently widely used in label printing, flexible packaging printing and corrugated box pre-printing.

For foam plate mounting tapes, the plate mounting effect depends on each step in the plate mounting process, and the correct use of plate mounting tapes can significantly improve the printing quality of flexo printing.

Compared with offset printing, there are mainly the following differences:

1. Reproducible range of color values. 1% 99% (or 2% 98%) for offset printing and 3% 95% for flexo printing.

2. Expansion of outlets (50%). 15% 20% for offset printing and 30% 40% for flexo printing.

3. Add the number of network cables. Offset printing is generally up to 175 line inches, while flexo printing and screen lines are generally not more than 150 line inches.