Application of UV Printing Ink on Film (3)

1. The process flow of Wuhan resin-made link material first puts the resin into the reactor and stops heating when it is heated to 120-130°C. When it drops to 120°C, the photoinitiator is thrown in, and then it is lowered to 100°C. , Add sensitizers and colorants, continue to reduce the temperature to 6o °C, the auxiliary resin prepared beforehand, hardener, plasticizer mixed into the kettle, disperse evenly or rolled to fineness after passing the UV Light-curing printing inks.
2. The process flow of Xi'an's resin-made linking materials firstly adds benzoin into the resin, raises the temperature to 120° C., stirs the mixture well, and at a constant temperature (120° C.) for 20 minutes cools to 80-60° C. and then adds hydroquinone. After dissolving at 70°C, cool down again at 60°C, add stannous chloride, stir well, reduce it to about 40°C, add benzoin ethyl ether, and mix well with poetry.
△: When used, 100 g was weighed, and the temperature was raised to about 60° C., and methacrylic acid (34.5 g in summer, 17.25 g in winter), vinyl acetate 4.5-22.5 g, and screen printing ink 5.5-11 g were added.
3, the performance and use of the main raw materials (1) photoinitiator and preservatives: benzoin, also known as benzoin ketones, benzoin, benzoyl methanol, bitter amaranth, phenyl hydroxy benzophenone, diphenyl hydroxy It is ethyl ketone. There are many kinds of photoinitiators, usually should take into account the curing properties, absorption spectrum, stability, color tone, permeability, odor, volatility, ion reactivity, corrosion, printing film expansion, etc., to ensure that the photoinitiator Stability is of primary importance.
(2) Sensitizer and catalyst: Stannous chloride, also known as tin dioxide.
(3) Auxiliary resin and cross-linking agent: Methacrylic acid, also known as α-methyl, is propylene, methacrylic acid.
(4) Plasticizer and stripper: Diester, also known as dibutyl phthalate.
(5) Heat Stabilizer and Inhibitor: hydroquinone, also known as Hyder, several pairs of Ni.
(6) Dispersant and Interfacial Adhesive: LJJTM, also known as interfacial adhesive.
(7) Auxiliary resin and cross-linking agent; vinyl acetate, also known as vinyl acetate.
(8) Crosslinker and diluent: styrene, also known as vinylbenzene.
(9) Auxiliary resin and cross-linking agent: Acrylic acid, also known as acid and vinyl formate.
(10) Anti-wear agent and ink additive: polyethylene wax.
According to the above formula design and production process requirements, the ink production method is basically the same as the traditional lithographic ink, but the product is in the use of a certain wavelength of ultraviolet light irradiation, the ink system will occur cross-linking reaction that is, from the liquid state Become solid. Its greatest feature is that it can print on both polar materials and non-polar materials; it can perform both flexible flexographic printing and transfer lithography; it has neither oven nor dryer facilities, nor does it need to consider the dirty version. Into the powder. When we tested the above formula, the effect of the photoinitiator was the same after the LJJ·TM additive was prepared in one step and the commercial ink product SLJJ·TM was temporarily prepared for trial production. In order to solve the photon decomposition, we use commercially available ink and the same angle card, the same production date, the same color variety, R need to add 2-3% LJJ · TM can eliminate the problem of photon decomposition. At the same time, the ink does not need to be heated at a temperature of minus 5 to 10 degrees Celsius, so that it will flow during high speed operation as usual. (To be continued)