he fineness of the solid powder fineness of the ink is not the same, Cotton Flags Wholesale the latter refers to the powder particle size, it is small, see Table 3-12. General pigment particle size is less than lμm actually paint based on a number of basic particles stick together to the aggregation state (size up to 50μm) added to the ink link the compound, Order Custom Flags after grinding, the aggregates dispersed, scattered survivors good, and the smaller ink particles (fineness). Fineness of ink in general is about 5μm, a special fine of up to 1 ~ 2μm. Fineness will affect the gloss of the ink film and the ink flow
Table 3-12 several classes of pigment particle size
Paint the name of the particle size (μm) Cotton Flags Wholesale
General paint <0.1
Two titanium dioxide 0.25
0.01 to 0.1 of the carbon black
Fluorescent pigment 1.2 to 50.0
Gold, silver thickness: 0.1 ~ 2.0
Color foil pigments> 200
8. Viscoelasticity. Viscoelastic refers to the ink by the pressure of interest board after shear fracture, pop-up version, the ink quickly rebound performance. Ink and substrate adhesion, and detachment, Custom Flags And Poles quickly retracted the phenomenon is a typical ink viscoelastic phenomena.
Viscoelasticity of the ink on the silk screen larger drawing phenomenon appears. Drawing phenomenon is that when the ink board scratched, screen pops up instantly, Cotton Flags Wholesale in a lot of ink filaments between the stencil with the substrate. This is very sensitive to the phenomenon in the screen , not only easy to make the of goods and screen dirty, sticky, and even the will be unable to.
Brushed the length of the ink viscosity. Viscosity, ink wire length; short. This regular addition and subtraction adhesive or reduce the molecular weight of the resin to reduce the ink viscosity, improve ink viscoelastic, to reduce the drawing phenomenon.
Drawing phenomenon with the force of time. The same ink, Cotton Flags Wholesale the separation speed quickly was flexible split the ink wire is short; separation is very slow, like pure liquid ink shed, not a wire.
9 dry. Require both the ink a long time in the Web version can not dry conjunctiva, Custom Flags For Boats and also requested the substrates dry as quickly as possible. Im clean so they can keep, to save space, speed up the of the speed and improve quality.
Screen ink drying requirements, especially in multi-color overprint. Generally dry natural drying, air drying, UV drying, electron beam irradiation drying, infrared drying, microwave drying and other forms.
Determination of the ink drying, can be the easy way. That is, production of a wide and
Slower than online and imprinted quick-drying inks, is ideal for ink, light curing, Cotton Flags Wholesale thermosetting and thermal cold solid such as ink for it is generated.