Application of Ultraviolet Ink in Flexo Printing and Its Features (Continued)

Second, the anilox roller: When using UV flexo ink, the anilox roller mesh angle is preferably 30 ° or 60 °. The following are several common specifications of ceramic anilox roller.

2O0 line 9.5-11.0 BCM Anilox: Printable opaque solid pattern.

360 line 4.5-6.5 BCM Anilox: Printable field and line patterns.

550 line 3.OBCM anilox: Printable continuous tone image product.

650 line 2.5BCM anilox roller: can print continuously adjusted image products.

800 line 2.0BCM anilox roller: Printable fine continuous tone image product.

Third, the rubber roller: The roller must be able to resist UV ink, usually used rubber roller EPDM rubber (EPDM) or silicone rubber.

Fourth, the media: Although the current use of flexo printing plate can basically be used for UV flexo ink, but it is best to use UV ink resistance better plate, such as DuPont's UVP-67 open plate Wait.

Fifth, the viscosity of ink UV flexo ink use slightly larger viscosity than water-based ink or solvent-based flexographic ink, and a wide range, can be in the range of 200 ~ 1000CPS, the general use of the viscosity of 30O-500CPS.

Six, storage: UV flexo ink should be strictly avoid light, avoid heat storage. Storage temperature should be controlled at 5 °C -30 °C, storage shelf life is generally six months.

Seven, additives: UV flexo printing ink commonly used additives are mainly three kinds: 1. UV reactive diluent; 2. UV curing accelerator; 3. UV ink cleaner.

VIII. Security Protection: There are two main points for prevention. One is the harm of UV radiation to the human body and the other is the harm of UV ink to the human body. The former needs to use lightproof materials to shield and seal the light source and enhance venting. The latter should be operated with gloves to prevent UV inks from coming into direct contact with the skin. For example, UV ink splashes on the skin and should be wiped dry and then soaped immediately. Wash with water.

UV flexo printing ink and its process technology are still continuously improving, new varieties and new equipment are emerging. All of these will promote the improvement of UV printing technology.

At present, flexographic presses equipped with a UV ink curing system are continuously increasing in foreign countries, and the existing flexographic presses are constantly being modified into UV ink curing systems. Replacing water-based inks and solvent-based inks with UV flexo inks has become a development trend, and has been widely applied to wide-width and narrow-width flexo printing machines. There is no doubt that the development prospect of UV flexo printing technology is very good. The promotion and application of domestic UV flexo technology needs to be based on our national conditions and the needs of products, as well as the perfection of domestic equipment and equipment. With the increasingly stringent environmental protection requirements and quality requirements, we believe that in the near future, domestic UV flexo technology There must also be a larger development.