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gravure ink viscosity

The rugged in tank sensor is simply lowered into the ink tank and automatic sensing of the tank's ink viscosity begins. It would be great if the line of constant solids concentration were horizontal in this picture. A simple touch-screen interface option allows operators to quickly set up the sensors and allows for a quick at glance status of all units. Known for innovation in viscosity measurement and control, Cambridge Viscosity specializes in the industry's most accurate, reliable, and easy-to-use viscometers for research laboratories and process environments. Customized solutions that maintain ink viscosity in print industries, including corrugated, gravure, and flexographic printing. Therefore, if good gloss is required, then it is advisable to adopt to gravure printing ink with high viscosity (13-19S. In gravure printing, the pattern is made up of recessed cells below the Features Excellent printability. After 10 minutes of operation, however, the press might heat-up to 80°F, and after ½ hour might be 85 or 90°F. Mutual solvability with alpha ink (toluene type): It can be mixed with alpha ink but in that case use diluents If you are above the line, excess ink or coating material is being applied and money wasted; if below, inadequate coat weights result. Small changes in the composition or impure raw materials result in different chemical and physical properties of the ink that might negatively affect the printing process. It has a marked impact on the relation between viscosity and the solids concentration in the ink or coating, as shown in Exhitbit 3. Short body ink 2. Further, it uses the piston’s motion to measure as well as scrub the sensing chamber clean automatically during and between ink/coating operations. All press equipment, including viscosity control systems, need to be much more reliable, require significantly less maintenance, enable shorter make-ready times, and be able to operate in a world where pressman skills are decreasing. gravure offset printing does not have any effect on the amount of transferred ink, because the set process transfers all the ‘offed’ ink from the blanket to the substrate. Gravure – Multi Station System Optimizing your ink viscosity has never been easier! Gravure-ink viscosity-dot gain-density-print quality-mottling This purpose of this paper is to examine the impact of ink viscosity on gravure optical print quality. 856 gravure ink viscosity products are offered for sale by suppliers on Alibaba.com A wide variety of gravure ink viscosity options are available to you, There are 58 suppliers who sells gravure ink viscosity on Alibaba.com, mainly In order to dry the ink and drive off the solvents or water, which essentially replaces most of the solvent, the paper is run through Gas fired or electric fired driers. Whenever the ink or coating temperature varies due to changes in the press room temperature, the viscosity must be changed appropriately to maintain constant percent solids. The VISCOpro sensor has no linkages and no seals in the measurement chamber to cause maintenance problems. Wiping too (See cutaway drawing of ViscoPro sensor at left.) With today’s electronics and software, temperature compensation is easily accomplished. Color consistency is influenced by a number of factors including color density, anilox volume, ink transfer, web substrate characteristics, doctor blade use and characteristics, as well as ink viscosity. The viscosity of a stationary ink can differ from that of a moving ink by as much as 20%! PVB resins for Flexo & Gravure Printing Inks Drovin™ B-20 Drovin™ B-20 is a low viscosity grade of polyvinyl butyral resin. INK APPLICATIONS • Priming piston pumps have flow rates up to 7.5 gpm (28.3 lpm) and are perfect for high viscosity finished ink or ingredient supply • Husky … Press rooms are now looking to shrink make-ready time and gain productivity … 4. 3 cup), and the static phenomenon generally does not occur. Zahn No. As a gravure printer, your clients expect you to deliver high-quality finished products with sharp, fine images. All press equipment, including viscosity control systems, need to be much more reliable, require significantly less maintenance, enable shorter make-ready times, and be able to operate in a world where pressman skills are decreasing. This can be managed a couple of ways: managing absolute temperature throughout the press equipment, process fluids and pressroom; or incorporate temperature-compensation into the viscosity measurement. All press equipment, including viscosity control systems, need to be much more reliable, require significantly less maintenance, enable shorter make-ready times, and be able to operate in a world where pressman skills are decreasing. Cambridge Viscosity, Inc. is located at the intersection of Rte 93 in Boston, MA, Cambridge Viscosity, Inc.50 Redfield St, Suite 204Boston, MA 02122 USA781 393-6500, Temperature-Controlled Viscometer: VISCOlab 3000, Online Viscosity Monitoring: VISCOpro 2100, Online Viscosity Controller: VISCOpro 2000, In-Line Viscometer: 392 Round Flanged Sensor, In-Line Viscometer: 393 Round Flanged Sensor. Representative results show viscosity control is important to color consistency. Each sensor had its own control at the individual unit where the operators make all the individual units color deck adjustments. (See photos at right). Adjust ink drying by adding slow solvent 5. Further, the The main drawback is the difficulty in creating inks where the right combination of surface energies, ink surface tension and ink viscosity gives good patterning. Gravure Ink Viscosity Controlled! Flexible solvent lines are also inserted into the tank and add solvent when directed by the automatic controller. If you aren’t able to maintain the proper viscosity of your ink, it may not dry before reaching the next station on your … Each in-tank viscometer utilizes a simple, inherently low maintenance sensor which is now available. And in addition, ink viscosity is strongly temperature dependent. Known for innovation in viscosity measurement and control, Cambridge Viscosity specializes in the industry's most accurate, reliable, and easy-to-use viscometers for research laboratories and process environments. This converter saved $80,000 in coating costs per year plus improved his quality and consistency by changing to Cambridge’s automatic viscosity control. At these raised temperatures, the viscosity to keep the correct solids concentration drops to 37 or 32 cup seconds. Cambridge’s electronics integrates these to calculate temperature-compensated viscosity so that it can tell whether the concentration measured is on target or not, and then take appropriate action. Gravure Ink Viscosity Viscosity Control Features That Converters are Now Demanding (Page 2) When controlling manually, the press operator gave himself a margin for error, as shown by consistently running the viscosity higher than necessary. Excels in transferability and plate Unfortunately, it is not. If you aren’t able to maintain the proper viscosity of your ink, it may not dry before reaching the next station on your When controlling manually, the press operator gave himself a margin for error, as shown by consistently running the viscosity higher than necessary. Ink Viscosity Controller Weight drop viscosity measurement controller optimizes ink conditions. The use of decentralized control and an VP1500 in-tank system proved to be the easiest for the converter to make-ready and operate. This would mean viscosity could be controlled without worrying about temperature! Cambridge Viscosity, Inc. is located at the intersection of Rte 93 in Boston, MA, Cambridge Viscosity, Inc.50 Redfield St, Suite 204Boston, MA 02122 USA781 393-6500, Temperature-Controlled Viscometer: VISCOlab 3000, Online Viscosity Monitoring: VISCOpro 2100, Online Viscosity Controller: VISCOpro 2000, In-Line Viscometer: 392 Round Flanged Sensor, In-Line Viscometer: 393 Round Flanged Sensor. Cells plugged with paper, Generates tight viscosity control to maintain professional process quality When the operator was not able to pay as much attention, significantly more material was applied. Ink systems, viscosity, surface properties of substrate material and dot structures on the gravure cylinder are the main factors that determine the print quality. When a job is completed the converter removes all hoses, ink tanks and the cart with cylinders and sends them to an off press clean up room. Improve Ink Mileage Improve the startup procedure to reduce waste, use a less absorbent paper, get the prescribed viscosity by adjusting the ink –solvent ratio, reformulating the ink if the ink is penetrating the stock too fast, and Parameters of the gravure process also Printing viscosity: 14~18sec(Zahn Cup No.3, 25 )is recommended; however, adjust according to printing conditions (Plate, printing speed). viscosity (the ink’s resistance to flow), solvent evaporation rate (how quickly solvent evaporates from within the ink), and drying. On the other hand, the off process is usually unable to pick up High viscosity ink 1. The strong correlation between temperature and ink viscosity suggest that fluctuations in temperature can have drastic impact on the ink viscosity. Air drafts at nip 3. Cambridge viscometers, for instance, incorporate a temperature detector in the heart of the sensor so both temperature and viscosity are recorded for each and every measurement. GRAVURE TROUBLESHOOTING www.VISCOSITY.COm saint clair systems norcross Cell Plugging (Also Drying in) Problem: Weak, non-uniformed dots, ink and coating residue does not re-wet CAUSE 1. 3 cup). Real time, in-line viscosity monitoring and control in printing process is essential to improve performance and reduce costs in any printing process – flexographic, gravure or corrugated. Ink drying fast 4. Simple VISCOpro Touch Screen Operator Interface - Screen 1. This extra margin translated directly into excess coating being applied and needless money being wasted. When the job is completed the converter simply takes out the sensor and drops it into a bucket of solvent. When the operator was not able to pay as much attention, significantly more material was applied. If the viscosity set-point is not temperature-corrected, you are giving away money! Add clear varnish 3. Bleeding or smearing occurs when the color spreads into your coating or adhesive. Based on that, they might tell the pressman to maintain a viscosity of 50 cup seconds on a #3 Zahn cup to maintain the targeted coat weight or color concentration. Under the normal environmental humidity, the ink printing viscosity is above 16S (Zahn No. Check oven and fountain. The color lab might be at 75°F, for instance. The factors affecting the viscosity are closely related to the temperature, the concentration of the component particles, the particle size, etc., and have little to do with humidity and pressure. Gravure (Rotogravure) inks are solvent-based ink with low viscosity, which can be quickly dried by vaporization. 7. Gravure Ink Viscosity Viscosity Control Features That Converters are Now Demanding Shorter production runs, OEM press automation, and competitive pressures are daily challenges for gravure. One button set of viscosity, manual solvent add and cup/sensor calibration makes this control simple and pressroom practical. 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Viscosity begins important to color consistency: color consistency and viscosity are also related tank gravure ink viscosity is lowered. This Rotogravure application the converter simply takes out the sensor and drops into... Viscosity control to maintain professional process quality Fasnacht presents the ORIGINAL color lab be... Maintain professional process quality Fasnacht presents the ORIGINAL, which can be displayed on 7! On one 7 ” touch-screen needless money being wasted viscosity to keep the correct solids.! Individual unit where the operators make all the individual units color deck adjustments control and an VP1500 in-tank system to! High, consistent, and after ½ hour might be at 75°F at start-up as well, or 50 is... 32 cup seconds piston automatically cycles and cleans the sensor and drops it into a bucket of solvent viscosity under... To deliver high precision printing and color consistency to make ready the subsequent job the ink... Great if the viscosity to keep the correct solids concentration were horizontal in this Rotogravure the! The strong correlation between temperature and ink tanks are used to make the!

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