The market leader in the printing industry provides MDC doctor blades for flexo and gravure printing and special applications. The word doctor is thought to come from German roots, where it was first called a “ductor blade”, meaning to draw across a surface. For the first time, all of the layers of perovskite solar cells except electrodes were deposited by suc-cessive gravure printing in this work. The doctor blade plays a key role in the performance of the anilox roll and the printer’s control over print quality. Gravure printing, photomechanical intaglio process in which the image to be printed consists of depressions or recesses on the surface of the printing plate. Product Process Each step of producing the blades is rigorous and precise. rotogravure blade,rotogravure blades manufacturer flexo doctor blades,flexo blades india gravure blade,doctor blades for rotogravure,gravure doctor blades gravure blades manufacturer,steel doctor blades india,doctor blades for gravure and flexo manufacturer,flexo blades flexo blade manufacturer doctor blades for rotogravure flexo doctor india,-convertech equipment pvt ltd Steel blades can range from .004” (0.10mm) to .010” (0.25mm) in thickness. They are called Rotogravure (gravure), and Flexographic (flexo) printing. Inspect the doctor blade holder for damages. Although the gravure printing used in the study, the theory to check dot quality through image analysis can extent to the other printing systems named flexography, offset, digital and screen printing. The basics of Gravure printing is a fairly simple process which consists of a printing cylinder, a rubber covered impression roll, an ink fountain, a doctor blade, and a means of drying the ink. China Aaron Gravure Printing Doctor Blade T0.15X30X100, Find details about China Doctor Blade, Printing Doctor Blade from Aaron Gravure Printing Doctor Blade T0.15X30X100 - Shantou Jielian Tech Co., … Gravure Doctor Blade Holders Replace worn or damaged blade holders with a holder that features boltless blade clamping and tool-less disassembly for wash up. In both Gravure and Flexo printing, the doctor blade is technically a metering blade. Acting as a squeegee, the doctor blade scrapes the cylinder before it makes contact with the paper, removing the excess ink from the non-printing (non-recessed) areas and leaving in the cells the right amount of ink required. the coating process. Gravure Printing 4.1 - Structure of Gravure Cylinder: Gravure cylinder parts – Axis, Shaft, Diameter, Circumference and Face length. Make sure it’s clean inside the clamping area. Gravure printing is an example of intaglio printing. Fax: +86-25-56608766 The speed of the gravure roll is usually the same TKM has developed the combi doctor blade as a suitable solution. Tel. Throughout his 29 year career with Allison, he has been involved in the application of doctor blades and doctor blade related components for various printing processes. Flexographic printing is not as old as rotogravure. Rotogravure is a printing process that has roots that go back at least 100 years. Flexographic printing presses operate with combination anilox roller and doctor blade inking systems making it important for doctor blades to have extended lifetimes. The final finished product is finished with a extra-smooth edge ensuring that the blades perform a clean wiping action on the gravure cylinder/anilox roller immediately on start-up. Ink transferred to paper. coating applicator is either an enclosed chamber with two doctor blades or an open pan with a doctor blade assembly to remove the excess coating. Depending upon the application, lamella, bevel or straight blades with rounded edges are used to meter the ink. Sign In Join Free. Due to the polishing process, there is no need to grind blades before using. The long runs and high volume of work typically expected of gravure presses requires equipment that delivers durability and longevity across thousands and thousands of impressions. This coating doctor blade is mainly used in gravure, flexo printing, also suitable for coating, color printing, embossing, metal printing, scraping, pulp industry. The advantages of gravure printing are a wide application range, high print quality, and large scale printing and anti-counterfeit performance. They are very small. Cut the counter/support blade at ends to 45 degree angle. The resolution of finer features requires thin residual From publications and illustrations, to packaging and postage, to décor and design projects, we know what it takes to get the best-possible results on gravure projects without compromising equipment life or output quality. Contacts: Xu Jian Messages. Product Info. In gravure printing, the doctor blade is a steel strip used to remove ink from the outside surface of the gravure cylinder. Features:-1.Special cutting edge technology, the blade angle of circular arc, the production process does not hurt the version; Doctor blade mounting and setup in gravure printing. Gravure is small cells recessed into a cylinder that hold ink. A typical blade that is widely used is .006” (0.15mm) thick with a .003” (0.075mm) thick lamella (reduced step). Combi doctor blades are specially designed for gravure printing. You can line up 100 to 300 of these cells within one inch. Building on earlier printing methods, modern gravure began in the late 19th century, and became widespread in the early 20th century. Doctor Blade for Gravure Printing Gravure printing is a direct printing method in which ink is transferred in cells to the substrate. effects to the following process c) Too high retain tension rewound web roll Unwinding. The final finished product is finished with a extra-smooth edge ensuring that the blades perform a clean wiping action on the gravure cylinder/anilox roller immediately on start-up. Product Description . It treats excess ink from the cylinder and helps improve the quality of printing, so we know this device as a doctor blade. MDC doctor blade for flexo printing gravure printing . This coating is then polished smooth, and then it’s engraved with a honey-comb shaped cells that carry ink. EDITOR'S NOTE: This post was originally published in July 2017, but due to its popularity and relevance, we're sharing it again for anyone who may not have seen it. This en- 3.The wiping action of a Doctor Blade directly affects the quality of printing/coating, making the quality of the Doctor Blade a key factor in printing productivity. The resolution of finer features requires thin residual films, but these thin films increase the likelihood of wearing the doctor blades. This design allows the relatively low cost blade to wear out before the expensive cylinder. Write. Doctor Blades are actually an essential part of commercial printing. When tens of millions of copies are needed, such as magazine (i.e. Wavy doctor blade 2. These cells are shaped like inverted pyramids. : +86-18061692509 The gravure printing process is one of the three major processes that are used for catalogs, magazines, newspaper supplements, cartons, floor and wall coverings, textiles, and plastics. The gravure process is relatively simple in theory. Favorites App. In printing the doctor blade (from ductor blade) removes the excess ink from the smooth non-engraved portions of the anilox roll and the land areas of the cell walls. M-FLEX® I is an ideal doctor blade for metering solids, line work, screens, and basic process using solvent and water based inks. Gravure printing is a type of intaglio printing, suitable for printing which requires very fine & detailed shades at high accuracy and quality.Excellent at high-speed printing, it is commonly applied for printing package which requires large volume per production.The word "gravure magazine" nowadays was actually coined in the past when these magazines used to be printed by gravure printing method. Selecting inks, accessories, doctor blades, and cleaning resources that are optimized for gravure processes is one of our specialties at Daetwyler. One of the biggest issues for many gravure printers is the premature wear of lamella doctor blades due to damage in the areas around the cylinder edges. In both Gravure and Flexo printing, the doctor blade is technically a metering blade. Consistent colour reproduction High-speed printing Widest presses Ink dries upon evaporation Buy cost effective coils or individual cut blades in various sizes. While there are many methods of printing, there are two predominant methods that use Doctor Blades. 4.3 - Doctor Blade –Structure, Types and Mechanisms of doctor blade. (To reduce wear from printing cylinder ends). Match. surface and a flexible metal blade called a doctor blade removes excess ink, leaving the surface clean, with ink only in the depressions. Introduction Although printing substantially contributes people’s daily life, it is maybe the most underappre-ciated technology. Doctor blades and printing cylinders can range in length from 7” up to 120”. During the printing process, the engraved cavities are filled with the ink by passing an ink bath and a flexible doctor blade is used to remove the excess ink. Specific areas of experience include doctor blade sales, tech support, training, and R&D as well as the design of custom retrofit doctor blade holders and systems. The lamella (reduced step) allows the doctor blade to meter very fine ink cells without leaving any ink in the areas of the cylinder that are not designed to print. There are 2 doctor blades (one on the top and one on the bottom) used in the closed chamber. 4.2 - Gravure Drying System – Drying Chamber – Solvent Recovery Systems – Environmental Friendly Solvent Removal Systems. Dents, nicks or bends make the doctor blade setup wavy. The gravure cylinder surface varies depending on the engraving or etching sys-tem. The type of inks, the color of the ink, and the cylinder surface can all affect the blade life. ... Gravure fluid ink & doctor blade to remove excess ink on top surface. They can also have special shapes to fit the application. There is no need to grind blades before use. Gravure and rotogravure. Appropriate price makes frequent change of blade possible. These cells are filled with the coating and doctored of the surface of the roll . GRAVURE PRINTING TECHNOLOGY A TO Z and Quality Trouble Shooting Tips at Hotel Mulia Senayan - Jakarta Nov 19, 2013 ORIENT SOGYO CO., LTD. ... image, or shrinkage / physical stress in the web roll. The cylinder is washed with ink; a doctor blade removes the excess, leaving ink only in the cells. The gravure roll is a steel roll with a pattern engraved into the face of the roll. The doctor blade steel is not as hard as the chrome on the cylinder. Cut the counter/support blade at ends to 45 degree angle. Ink picked up by print cylinder 2. Gravure printing concepts, basics background, principle, components and advance development of gravure printing process. The gravure printing process is done with flat plates or, more commonly, with cylindrical surfaces. Gravure cylinder rotates in the Dents, nicks or bends make the doctor blade setup wavy. Order) 4 YRS Shantou Jiesheng Trading Co., Ltd. 100.0%. The world-famous MDC Longlife has been the best doctor blade on … Learn. Paper/substrate, Gravure cylinder, Impression roller, Doctor Blade and Ink. MFLEX Plus® The “Go To” Doctor Blade for High Speed HD Flexo. The surface can be made of either copper protected by a final chrome finish or zinc. It uses a depressed or sunken surface for the image. Align doctor blade proper 3. The special finished contact zones of these doctor blades guarantee a quick start-up without any streaks. A technician installs a doctor blade for flexographic printing. What are the advantages of Gravure? Nanjing DeKeJie Industry And Trade Co.,Ltd. With these 10 troubleshooting tips, you should be able to diagnose and fix many of the gravure printing problems you encounter, streamline operations, and optimize your printing processes. With the reduced blade tip the doctor blade pressure can be greatly lowered. Printing Processes: Rotogravure (Gravure) STUDY. Doctor blade removes excess ink 3. SUREPRINT Doctor Blades are manufactured from highly refined strip steel specially selected for Doctor Blades. A fundamental limit to the gravure printing process is in the doctoring step, in which a residual film defines the lower bound on allowable feature size. Packaging Gravure Printing Problems and their Solutions On the following pages, you will find the information on the most common packaging gravure pressroom problems, how to recognize them, their causes and how to correct them. After engraving, the copper is then plated over with chromium. A wide variety of doctor blade for flexo and gravure printing machine options are available to you, such as doctor blade. This cover carries the image by using raised areas. cereal boxes, M&M’s candies, cos-metics), or specialty items (i.e. Good durability and corrosion resistance of doctor blade can reduce the wear of air cylinder resulting from blade. MFLEX PLUS® The "GO - TO" Doctor Blade for High Speed HD FLEXO MFLEX PLUS® for HD FLEXO is the latest development in SWEDEV’s range of printing doctor blades. Although steel is preferred in most gravure applications, plastics are occasionally used, usually in conjunction with a worn cylinder as a means of prolonging its life. The doctor blade is at the heart of the rotogravure printing process. A doctor blade is applied to the surface of the cylinder in a manner that removes all the surface ink … The blades need to have a long lifespan in order to reduce the change time of doctor blade and increase efficiency. The Lamella tip of the STANDARD doctor blade is used in a variety of Gravure and Flexo printing processes, and related doctor blade applications. Packaging Gravure Printing Problems and their Solutions On the following pages, you will find the information on the most ... trailing edge of print 2. The engraved cells are filled with ink while the cylinder is rotating and partially immersed in a pan of ink. In this study, doctor blade angle was positioned at three different levels to investigate its effect on printed dot quality. Abrasive inks, elevated press speeds as well as extended gamut printing systems are putting new demands on the flexographic process. We can supply all the dimension according to your requirement. E-mail: dekejie@outlook.com, Doctor blade for all rotogravure printing presses, Doctor blade choosing for printing industry, rotogravure Printing doctor blade producer, Low pressure between blade and cylinder improve the lifespan of blade. In printing the doctor blade (from ductor blade) removes the excess ink from the smooth non-engraved portions of the anilox roll and the land areas of the cell walls. A. Rotogravure Printing Process Rotogravure printing process can be understood by the printing mechanism given above. Blade angle not right 3. Enhanced doctor blade wear properties have become essential in the modern day flexo pressroom. Doctor blades are also used in other printing and coating processes, such as flexo and pad printing for the same function. How are the plates engraved? While gravure and flexo are totally different processes, the blade meters the ink in both. Clear History; Gravure & Flexo Printing Machine Doctor Blade. © 2014 Almelek A.Ş. "Doctor Blades" are used to meter and control the application of ink during the gravure printing process. Created by. It is particularly suited for … Use a counter/support blade from 0,5mm thickness, preferably a stainless type. The doctor blade is normally made of special carbon steels and is heat treated to a hardness that will allow it to wear very slowly. A doctor blade for gravure printing, further comprising an inorganic baking paint layer or a ceramic sprayed layer on the back surface (the surface on which the doctor blade scrapes ink). Traditionally, a 40 mm or wider doctor blade with a lamella profile is required to achieve the necessary ink metering precision. Plastic & Composite Doctor Blades For Flexo, Coating, and Gravure applications our composite and plastic blades are designed to offer cost-effective performance for specific needs ranging from flexo containment blades to high speed gravure printing. The good effect of removing excess ink reduces excess ink. Flexible Packaging Printing Processes Overview Slide 26 2009 Consumer Packaging Solutions For Barrier Performance Course GRAVURE Printing - process. The modern gravure printing press typically will have 8 to 10 printing units or stations. This anilox roll is normally made of a steel core that is plasma sprayed with a special hard ceramic coating. PLAY. The engraving is usually done with a laser beam. Doctor Blade is an ink remover, it removes excess ink from the smooth and un-engraved area of the gravure cylinder. The position of the blade relative to the nip is normally variable. Gravure print attributes, print density, sharpness halftone, dot gains, color trapping & match, print gloss and ink setting. Doctor Blades are actually an essential part of commercial printing. The goal of every print process is to meet the needs of a print... read more. The ink is then trans-ferred from the cylinder to a desired substrate by applying pres- sure with the impression roller. It uses a depressed or sunken surface for the image. It is a direct printing process, which means that ink is transferred directly from the printing surface to the substrate. As shown in the above mechanism gravure printing mechanism consists of main five elements. Gravure & Flexo Printing Machine Doctor Blade, Find Details about Doctor Blade, Flexo Doctor Blade from Gravure & Flexo Printing Machine Doctor Blade - HERZPACK (SHANGHAI) MACHINERY CO., LTD. National Geographic, IKEA catalog), book, newspaper, packaging (i.e. Doctor Blades will last from one working shift up to several days. Quotations. The doctor blade meters (controls) the amount of liquid ink that is deposited on a printing cylinder. High quality coating makes the doctor blade have good corrosion resistance. Poor tension control 4. US $300.00-$350.00 / Box. TheDriedMango. These raised areas on the blanket cylinder are supplied ink by a second cylinder that is called an anilox cylinder (roll). It does this by wiping the cylinder surface of excess ink while the cylinder rotates in an ink supply. This is brought to you as another fulfillment of our service to the industry. The chrome is hard and allows the cylinder to run many copies of a print without wearing out. The printing cylinder carries the image to be printed. Well as extended gamut printing Systems are putting new demands on the engraving or etching sys-tem good of! 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From 0,5mm thickness, preferably a stainless type been the best doctor blade wear properties become! Chrome finish or zinc the change time of doctor blade pressure can made., gravure cylinder surface can all affect the blade life is one of our service to the nip is variable. The same direction at the point of contact treats excess ink in both gravure and printing... Flexo ) printing printing method in which ink is then engraved with a lamella profile required! Perovskite solar cells except electrodes were deposited by suc-cessive gravure printing in this.! Pattern engraved into the Face of the roll Rotogravure is a direct printing process inks. Longlife has been the best doctor blade setup wavy industry provides MDC doctor blade for and... Blades are wiping blades used to meter and control the application of ink damaged... Diameter, Circumference and Face length, preferably a stainless type ( 0.25mm ) in thickness very cells... Hold ink doctor blade in gravure printing process separate from the smooth and un-engraved area of the roll and! Engraved with a laser beam specially selected for doctor blades reduces excess ink the!, Shaft, Diameter, Circumference and Face length each step of producing blades.