Screen printing has the characteristics of thick ink layer, rich graphic layers, strong three-dimensional effect, and wide range of printing materials. Its application in high-end tobacco, wine, and food packaging cartons is gradually increasing. Use UV screen ink to print frosting, refraction, ice flowers, wrinkles and other effects on cigarette boxes, which greatly stimulates consumers’ desire to buy. However, due to the low printing speed, slow ink curing speed, difficult control of printing quality, and large consumption of printing materials, the flat screen printing method cannot meet the needs of large-scale and mass production of cigarette cartons. Adopt high-speed rotary screen printing production line, with fast printing speed, high productivity, stable printing quality and low consumption. It has changed the traditional flat screen printing, manual paper feeding and ink feeding methods, and is suitable for high-speed automatic and large-scale mass production. Folding carton.
Web rotary screen printing uses a nickel metal round screen printing plate, a built-in doctor blade and an automatic ink supply system. The doctor blade transfers the printing ink from the circular screen plate to the surface of the substrate supported by the impression cylinder. The entire printing process from paper feeding, ink supply, printing color registration, UV drying, etc. is fully automatic controlled by computer. The circular screen printing plate is made of 100% nickel non-woven fabric material, and its mesh is hexagonal wire-shaped hole by electroforming. The entire mesh surface is flat and thin to ensure the stability and precision of printing. Suitable for large-format rotary printing, the maximum speed can reach 125m/min, and the screen can be reused 15 times. Therefore, web rotary screen printing can not only meet the requirements of special effects such as printing frosting and frosting, but also can hot stamp holographic anti-counterfeiting marks, embossing, and die-cutting on-line, which is easy to realize high-speed automatic printing of cartons.
Environmentally friendly UV screen printing imitation metal etching ink is mainly composed of oligomer (ie, photocurable resin), reactive diluent (ie, photosensitive cross-linking monomer), photo (polymerization) initiator, and additive. Printed on gold and silver cardboard, UV silk screen imitation metal etching ink solidifies quickly under ultraviolet light, and the surface of the printed matter produces a frosted effect.
Under the irradiation of ultraviolet light, the photopolymerization initiator in the UV ink absorbs photons of a certain wavelength and is excited to an excited state to form free radicals or ions. Then, through the transfer of intermolecular energy, polymeric prepolymers and photosensitive monomers and other polymers become excited states, resulting in charge transfer complexes; the complexes are continuously cross-linked and solidified to form a film. UV ink selectively absorbs photons of ultraviolet light, and the dryness of UV ink is affected by the total energy of the radiated light of the UV light source and the distribution of light energy of different wavelengths. Solving the matching of UV ink and UV light source is conducive to speeding up the drying speed of ink, improving labor productivity and energy utilization, and reducing production costs.
We have been engaged in the printing and packaging industry for more than 10 years, and have more than 10 years of customization experience. Our products are used in Clothing & Shoes Packaging; Food Packaging; Chocolate Packaging; Beverage Packaging; Cosmetic Packaging; Gift & Craft Packaging; Candle Packaging; Wine Packaging; Tea Packaging; Jewelry & Watch & Eyewear Packaging; Consumer Electronics Packaging, etc. Want to know more, please contact us: https://www.reyoungpack.com/contact-us/
Post time: Apr-10-2023
Post time: 2023-04-27 09:50:52