Uncured inks

Uncured Ink. The behavior of both Ink formulations can be roughly divided Into three regions Initiation behavior, short term steady flow, and long term steady flow. This can be... 

Steady Shear (Uncured Inks). The short term steady flow stress levels (average values achieved between 30 and 120 seconds) were determined as a function of shear rate and used to calculate viscosities. Values of these viscosities for samples of the two Ink formulations are plotted against shear rate In Figure 3. 

Curing Study. Although the data on the mechanical properties of the uncured inks provide information that is useful in fabricating the inks, no explanation for the poor performance of BK-62 was found. As a result, experiments aimed at examining the cure behavior of the inks were conducted. Samples of the inks were cured on a heated 2 roller apparatus, and, after various curing times, small portions of ink were removed and characterized for oscillatory and short term steady flow viscosity. In view of the complexity of the oscillatory behavior, most of the emphasis is on the steady flow tests however, it is useful to examine the general trends exhibited in the oscillatory data. 

Uses Solvent for uncured rubber, polyvinyl chlorides, vinyl chloride copolymers, 1,1-dichloro-ethylene copolymers, polyurethane coatings natural resins topcoating solutions cellophane magnetic tapes adhesives printing inks organic synthesis. 

Uses Biocide microbiostatpresenrative for aq. formulations, latex emulsions, adhesives, metalworking fluids, aq. paints, casein and rosin disps., textile spin finishes, pesticides, inks, slurries, food-pkg. adhesives, polishes, leather processing sol ns. antimicrobial in cosmetics preservative for animal hides and skins preservative in paper/paper-board in contact with aqTfatty/dry foods slimicide in food-contact pa-per/paperboard biocide in food-contact uncured liq. rubber latex Regulatory FDA 21CFR 175.105,176.170,176.180,176.300 Mam JDistrib. Avecia PMC Spec. Sinochem Jiangsu Wuxi Troy... 

The desired circuit pattern is printed on to the board using photolithographic methods, as described earlier. Acrylate resins, sensitive to UV light, are used for the process and are spread on to the board. The desired circuit is imaged onto the board using a mask and incident UVL will then cure exposed parts of the resins. Uncured resins are removed with solvents, and the framework of the electrical circuit has been imprinted on the board. In the past, and probably still in some lower-budget outfits today, epoxy resin-based inks were used in the place of acrylates, and these were heat rather than UVL cured. 

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