Continuous ink-jet machine is mainly used in the production of carpets and upholstery, car flags wholesale machine accuracy is relatively low, but the speed is faster. Racing Checkered Flag
Two. Only in accordance with the requirements of the spray droplet on-demand inkjet (DOD) demand drops inkjet machine, sub-thermal pulse, piezoelectric, car flags wholesale solenoid valve and static four types. The most widely used is heat pulse inkjet machine and piezoelectric pulse two types of machine.
(1) thermal pulse jet machine
Heat pulse jet machine according to Buy Yard Flags the computer sends a signal moment the nozzle at the heating element heated to high temperature, the ink quickly reach high temperatures (about 400 ° C) state, leading to the volatile components in the ink vaporization of the formation of bubbles, so that ink droplets ejected from the nozzle hole by the heater, cooling bubble contraction, the release of the ink droplets. The ink chamber re-ink reservoir device is full, as shown in Figure 3-8. car flags wholesale Therefore, this , also known as micro-bubble jet . Discount Car Flags
Heat pulse nozzle heating and cooling at frequencies up to several thousand times per second, spray droplet is extremely subtle, and because of the impact generated by the bubble, car flags wholesale droplet injection speeds of up to 10 ~
Figure 3-8 hot pulse drops on demand ink jet principle
(2) piezoelectric pulsed machine
The piezoelectric ink-jet machine is the use of piezoelectric sensors to exert impact on the ink. Computer-controlled changes in voltage applied to the piezoelectric sensor, with a voltage change occurs the volume contraction and expansion, the direction of volume change depends on the structure and shape of the piezoelectric material. When the contraction of the sensor will ink nozzle exert a direct pressure, high speed ejected from the nozzle. After the disappearance of the voltage, Decorative Flags And Banners the piezoelectric material to restore to the normal size, the ink chamber to rely on capillary action device filled with the ink reservoir, shown in Figure 3-9.
Figure 3-9 piezoelectric drops on demand ink jet principle
Piezoelectric nozzles per second about can spray droplet of about 14,000, slightly more than the heat pulse, smaller ink size of 150 × 10
To date, no universally applicable standard in digital textile jet ink formulations, but all the ink formulations must meet the general requirements, such as viscosity, surface tension, density, vapor pressure, electrical conductivity, thermal stability, toxicity, easy flammable dye purity and solubility, mechanical adaptability, color yield, corrosion resistance, storage stability, color brilliance and light fastness and wash fastness, including viscosity, surface tension, stability, bright colors and the fastness of the most important indicators.
Inkjet ink formulations, including a pigment (dye or paint), vector (adhesive / resin) and additives (including viscosity-adjusting agent, initiator, cosolvent, dispersant, defoamer, penetrant, moisturizing agents ), car flags wholesale in which the additive should be needed.