Web Rotation Screen printing uses a nickel metal round screen 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, ink color registration, UV dry bath, etc. are fully controlled by the computer. The round screen printing plate adopts 100% nickel non-woven fabric material, and the mesh is hexagonally shaped by electroforming. The entire mesh surface is even and thin, so as to ensure immutability and precision of imprinting. 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 ice flower, but also can be used to hot-stamp holographic anti-counterfeiting labels, embossing, and die-cutting molding, making it easy to implement high-speed automatic printing paper boxes.
Environmentally-friendly UV screen printing imitation metal etching ink is mainly composed of an oligomer (ie, a photocurable resin), a reactive diluent (ie, a photosensitive cross-linking monomer), an optical (polymerization) initiator, and an additive. Printing on gold and silver card paper, UV screen printing imitation metal etching ink is rapidly cured under ultraviolet light irradiation, and the printed surface produces a frosted effect.
Screen printing has the features of thick ink layer, rich graphics, strong three-dimensional sense, and wide printing materials, and has gradually increased its application in high-end tobacco and alcohol, food packaging cartons. The use of UV screen inks to print frosted, refraction, ice, wrinkles and other effects on cigarette packs has greatly stimulated consumers' desire to purchase. However, due to the flat screen printing method, the printing speed is low, the ink curing speed is slow, the printing quality is difficult to control, and the printing material is consumed. Therefore, the need for the size and mass production of cigarette paper boxes cannot be met. The use of high-speed rotary screen printing production lines, printing speed, high yield, print quality is not chaotic, low consumption, change the traditional flat pressure flat screen printing, manual feed, ink supply, suitable for high-speed automatic, large-scale Batch production of beautiful folding cartons.
Under ultraviolet irradiation, the photopolymerization initiator in the UV ink absorbs photons of a certain wavelength, excites excited states, and forms radicals or ions. Then, through intermolecular energy transfer, polymers such as polymerizable prepolymers and photosensitive monomers are brought into an excited state to generate charge transfer complexes; UV inks selectively absorb UV photons.
The drying of the UV ink is affected by the total energy of the light energy radiated from the UV light source and the distribution of light energy at different wavelengths. Solve the UV ink and UV light source match, help to speed up the ink drying speed, improve labor productivity and energy utilization, reduce production costs.
Daseng Magic Tricks are perfect kids promotional gifts and premiums. We are 20 year professional manufacturer studying, developing and producing children magic tricks.
As we all know Magic exists and develops and became so popular worldwidely just because its mystery and attractiveness. But not every magic can be performed by non-professional magic enthusiasts, let alone children.
Therefore, Daseng specializes those easy-to-perform tricks for children in the world. They are easy only if you get the trick and the instruction(or DVD). If you watch the show on the video, you can never find out the secrets.
A small set of magic tricks will arise children curiocity in many ways. Together with a magic show, you can make a perfect promotional project.
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Zhejiang Kaseng educational toys Co., ltd , http://www.dasengmagic.com