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  • White photosensitive ink decoration 3D glass, process details
    Jan 04, 2019

    White photosensitive ink decoration 3D glass, process details

     

    IKS PVD,we are good at to make the glass PVD vacuum coating machine,contact with us now.

    Iks.pvd@foxmail.com

     玻璃2

    3D glass, a type of cell phone glass that has been pressurized and hardened to bend its two or four sides in the same direction. If only viewed from the outside, it can be found that the surface of 3D glass is more curved than that of 2D and 2.5d glass, but in fact some physical features of 3D glass are significantly better than that of 2D and 2.5d glass. 3D glass has the advantages of light and thin, transparent and clean, fingerprint resistance, anti-glare and weather resistance, which can not only enhance the appearance novelty of intelligent terminal products, but also bring excellent touch touch.

     

    However, it is still too expensive to choose 3D glass just because of these physical characteristics. The reason why many manufacturers choose 3D glass is for future development. 1. In the future, displays of smart phones, smart wearables and other products will adopt OLED or QLED, and they need to be combined with 3D glass to achieve their effects; 2. In the future, black technologies such as wireless charging and antenna need to get rid of metal shell with shielding effect, so 3D glass with superior physics becomes the first choice; 3. Artistic pursuit, beautiful and portable.

     

    Currently applied to the adornment of 3 d mobile phone cover glass, mainly has the following several ways, (1) by printing on the diaphragm after sticker on the 3 d glass, this way because the process is complicated, need to pass on the diaphragm transfer, cleaning, coating, printing cover bottom - the diaphragm on the 3 d glass), one of the special transfer printing process difficulty is high, is very complex, the cost is relatively high. (2) low tension screen printing decorative ink is directly used on 3D glass. Due to the 3D effect, the printing edge treatment is poor, which is prone to tooth edges and gaps. (3) after the 3D glass concave surface is sprayed with ink, radium carving can be carried out directly on the 3D ink. Due to the large window area, the time and energy consumption of radium carving are too high and the efficiency is very low. Generally, it is only used for the small holes of radium carving on the back cover.

     

    This paper aims to introduce a process method of making window BM with white light-sensitive ink on the glass of 3D mobile phone with four curved sides, which is used to reduce the decoration cost, improve the processing efficiency and improve the appearance effect.

     

    The specific methods are as follows:

     

    Step 1: prepare the glass. The 3D glass is curved on all sides, the surface is cleaned by ultrasonic wave, and then dried at 120 for 2 minutes.

    Step 2: spray. The concave surface of 3D glass is sprayed with a white light-sensitive ink film with a thickness of (13-15um). The ink is sprayed with oil conditioning conditions as follows: 100 parts of the ink, 15 parts of the curing agent, 5 parts of the promoter and 80 parts of the diluent. After evenly mixing, the ink is filtered by 200 mesh.

    Step 3: dry. Bake for 90 10 minutes until dry.

    Step 4:  spraying. The concave surface of 3D glass is sprayed with white light-sensitive ink, and the light-sensitive white film is further sprayed on the ink with a thickness of (13-15um). The ink is sprayed with oil conditioning conditions as follows: 100 parts of ink, 15 parts of curing agent, 5 parts of accelerator, and 80 parts of diluent. After evenly mixing, the ink is filtered by 200 mesh.

    Step 5: dry. Bake for 90 10 minutes until dry.

    Step 6: exposure. The film prepared in advance is placed on the concave surface of 3D printing ink. The gap between film and glass edge is 0.1mm. Then use the LED parallel light source to expose the film at 25mm above the film, and the exposure energy is controlled at 1000 100mj/cm2.

    Step 7: development. The exposed 3D glass is placed in the developing machine and sprayed with 1% sodium carbonate to develop. During the exposure process, the window area blocked by film will be developed and washed away, leaving the window edge. Let the product sit in the oven for 15 minutes at 160 degrees Celsius.

    Step 8: spray. After the concave surface of the 3D glass is developed, the white light-sensitive ink is further sprayed with light-sensitive black film thickness (12-14um). The ink is sprayed with oil conditioning conditions as follows: 100 parts of the ink, 20 parts of the curing agent, 3 parts of the promoter and 100 parts of the diluent. After evenly mixing, the ink is filtered by 200 mesh.

    Step 9: dry. Bake for 90 10 minutes until dry.

    Step 10: exposure. The film prepared in advance is placed on the concave surface of 3D sprayed black ink. The gap between film and glass edge is 0.1mm. Then use the LED parallel light source to expose the film at 25mm above the film, and the exposure energy is controlled at 1000 100mj/cm2.

    Step 11: develop. The exposed 3D glass is placed in the developing machine and sprayed with 1% sodium carbonate to develop. During the exposure process, the window area blocked by film will be developed and washed away, leaving the window edge.

    Step 12: final baking. Place the developed 3D glass in the oven for 30 minutes at 160 c

    Final packaging shipment.玻璃1

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