What are the eyewear printing process？
On the surface of the eyewear, we can see some words, some are the logos of the guests, some are the model numbers, or slogans, etc. How are these words or patterns made on the eyewear? Nowadays, the more popular eyewear include acetate eyewear, metal eyewear, titanium eyewear and buffalo horn eyewear, etc. Different types of eyewear have certain differences in the printing process. In this article, we have a detailed understanding of the printing process of eyewear.
The most common printing processes for eyewear are transfer-print, hot stamping, and laser printing. They can also be achieved through metal LOGO, crystal, UV sticker, 3D printing and other processes.
eyewear printing on the temple
1. transfer-print is one of the most common eyewear printing processes. The approximate process is: engraving the steel plate (corrosion of pictures and texts on the steel plate through a specific process), fix the steel plate on the pad printer, make the eyewear positioning mold, put in the prepared pad printing oil, Put in the eyewear and start the machine, and print good to dry.
1.1 The advantages of transfer-print are 1) Rich colors 2) Small text can be printed 3) Because of the rubber head, it can print on slightly irregular surfaces, such as round or small waves.
1.2 The disadvantage is that the adhesion is average (generally add hardener, after drying, a certain strength can not be scraped off with nails).
2. Hot stamping is one of the more commonly used printing processes for acetate eyewear frames. The approximate process is: engraving the hot stamping die (just like engraving a seal), and the machine puts the hot stamping aluminum thin paper of the required color (the most common ones are gold and silver; there are also hot gun colors, red, etc., but they are rarely used. ), put the eyewear in, start the machine, and glue the hot stamping paper on the surface of the eyewear through a certain pressure and temperature (usually the inner side of the temple, hot stamping on the lens is also common).
2.1 Advantages: The hot stamping characters have a metallic texture and are obviously high-end;
2.2 Disadvantages: 1) The color is relatively single, generally only gold and silver 2) The hot stamping characters cannot be too small 3) Only flat or slightly curved hot stamping
2.3 Hot stamping method: 1) Concave mold. The hot stamped graphic is slightly concave, which is the most common; 2) Punch. The hot-stamped characters are slightly raised and appear more textured.
3. Laser. It is one of the common eyewear printing processes. It uses the laser beam of the laser machine to leave a designed graphic on the surface of the eyewear frame to achieve the desired effect.
3.1 The common ways are as follows:
(1) Shallow laser. Refers to a layer of shallow traces of graphics and text on the surface of the frame, generally without any follow-up processing. For example, laser customer's trademark, model name, glasses size and other information.
(2) Deep laser. Refers to a layer of radium on the surface of the frame with a certain depth of graphic traces, generally at least 0.3mm or more. After the radium is finished, the desired paint color can be dripped on the inside to achieve the desired effect.
(3) Metal frame laser, one is a light laser after electroplating, the radium drops a layer of color on the surface to reveal the background color, for example, a golden frame (the background color is silver), after the radium drops a layer of gold on the surface, the silver is exposed ( The advantage of this method is that the font is clear, but the disadvantage is that it damages the electroplating surface and is easy to oxidize over time). The other is the laser before electroplating. Generally, the radium is slightly deeper, so as not to see the traces of the laser after electroplating. After the laser, lightly polish and roll in the tumbling box, remove dust coke inside and around the laser groove, and then remove it for electroplating. (This method is suitable for relatively thick line graphics and text effects, and if there is no color oil on it, it's not clearer than shallow radium).
eyewear printing on the lens
4. Metal LOGO. Refers to the production of LOGO by wire cutting, oil pressure, casting, corrosion, etc., after welding, polishing, electroplating, etc., and then installing on the spectacle frame. This method looks relatively high-end, but the cost is relatively high, not suitable for relatively small graphics.
5.Crystal sticker. Usually used in acetate frames, injection frames, TR90 spectacle frames. Make pictures and texts on thin metal sheets through processes such as corrosion. The main process is: carve the slot on the frame, put the metal pieces, drop the crystal glue, dry and polish it with a water mill, and then enter the regular production process of the glasses (such as rolling, polishing, etc.) . The advantage of the crystal sticker is that it is easy to operate and the cost is relatively cheap, but the disadvantage is that it will burst easily over time.
6.UV stickers. Usually used in plastic frames, injection frames, TR90 spectacle frames. The graphics and text are made into thin metal sheets through processes such as corrosion, and glue is evenly coated on the back. The main process is: post on the surface of the eyewear. Under normal circumstances, in order to be firmer, a thin layer of transparent paint will be sprayed on the surface after the post is applied, and then polished together with the eyewear frame to make it look like the other parts of the eyewear. The advantage of the UV stickers is that it looks more metallic and firmer. The disadvantage is that the UV film is easy to be skewed, and it is not easy to rework once it is skewed. In addition, the final cost is higher than that of the crystal sticker.
7.Crystal glue word. Usually used on acetate frames. Carve or laser a certain depth of pattern or font on the acetate frame, and then apply crystal glue (usually with color), dry it, and smooth it with a water mill. Generally applicable to patterns or fonts with relatively thick lines.
8. 3D printing process. Refers to using a 3D printer to print graphic information on the surface of the eyewear. This is a relatively new method. The advantage is that the effect is more individual. The disadvantage is that the color is relatively monotonous, the adhesion is average, and it is easy to fall off after a long time. Because this method is rarely used temporarily on eyewear, it will not be described in detail here.