gravure cylinder specifications

A channel is formed by incomplete withdrawal of the diamond cutting stylus, forming linkage between the individual cells. 0000007294 00000 n However, it will be appreciated that variations and modifications can be effected by a person of ordinary skill in the art without departing from the scope of the invention. All the manufactured gravure printing cylinders are reviewed to cross-check the standard process parameters and also to validate output synchronization amongst Pre-press, Engraving machine and Printing machine. As depicted in Table 1, for coatings containing dispersed beads or particulates the specification of Wc /WO is not a sufficient parameter to design an engraving for acceptable coating quality. These listed companies are offering best quality rotogravure cylinder to the clients on time. 0000000016 00000 n (4) Choosing a ratio (DB /Do) of a known particle diameter to engraving channel depth. 0000002997 00000 n Screen lines per inch Cell shape Volume billion cubic microns Estimated … 0000146718 00000 n English. Print Cylinder … 0000001687 00000 n The Gravure Cell Analysis option for the AniCAM was devel-oped for gravure printers where Quality Control of their gra-vure cylinders is desired. JCT-GPC-S001. The cylinder is then chrome-plated, cross-hatched and polished. x�b``P```1d```��d@�@���� MX����3�1�c\Ȑ�P�P �%���i.�^�L����:��:j�g��b� v���5�6����0�f8Π5���ɶ Cylinders #K38 and #17 were designed according to the method outlined in the above embodiment, cylinders #K36, #16 and #18 were designed using prior art methods. (c) Choosing a compression angle (α). Hollow rotogravure cylinder gravure printing cylinder roller for Plastic printing . If the same gravure pattern from the Direct gravure is used the highest coat weight will only be about 80% of the direct gravure methods. A gravure cylinder comprises a (typically) steel cylinder base, or an underlying metal structure that supports the engraved image-carrying layer. 1). Superfinishing technology is an additional operation to grinding. Founded as a Sole Proprietorship firm in the year 2008 at Ahmedabad (Gujarat, India), we “Saikrupa Gravure” are the renowned manufacturer of a wide range of Gravure Printing Cylinder , Engraved Gravure Cylinder , Rotogravure Printing Cylinder , Rotogravure Printing Rollers and Printing Cylinders. 2; and. (Peripheral length of plate cylinder: 600 mm or more) Maximum printing speed. Ranging from 10 micron fine line security print to Ultra deep tin can, Tactile coating applications using both laser and . The engraving head responds by thrusting a pyramid shaped diamond stylus into the soft copper to engrave a discreet cell. The proper lay down of the liquid coating composition is … A comparison was made using 3 coating Dispersions containing particulates of different sizes, Dispersion A used particles with a defined polydisperse size range, Dispersions B and C used mono-dispersed particles. Our offered products are widely appreciated by the clients for their features … � �bV&�h�8�� ��� Referring to Table I, the coating quality and image quality achieved with respect to the preferred design criteria of the current invention are compared with the prior art. 0000141506 00000 n Aluminum foil … • There are many configurations suitable for applying the primers listed above. If they are testing with a Profilometer, this may be the case; however, the Profilometer does not. Accucheck proof reader: The unique proofreading process is conducted to ensure efficiency. 4.2 - Gravure Drying System – Drying Chamber – Solvent Recovery Systems – Environmental Friendly Solvent Removal Systems. Max Width Printing Material. 0000005771 00000 n With its HelioKlischograph (K) engravers, Hell Gravure Systems is an ob-vious market leader for gravure cylinder engraving machines and the … The cylinder to be engraved revolves at a synchronized speed with the scanner drum. 2-8 C feeding the substrate and adjusting the tension (web presses); C transferring the inked image to the paper; and C delivering the printed matter as sheets in a pile, or otherwise folding, rewinding on a roll, or other finishing and converting operations.7 As … (f) Determining the wall width to cell width ratio, Ww /Wo. Français (French) Italiano (Italian) Español (Spanish) Deutsch (German) FUTEC Europe GmbH. In operation the cylinder is bathed in printing ink and wiped clean with a carbon steel doctor blade. In practical words, explain how to stop chrome plating cylinder oxidization and white rust and white pitted spots on cylinder surface. The height is a function of the engraved cell vertical line screen (VS) dimension as, 1/(V) (in lines/μm). The relationship of cell width to repeat length along with stylus angle and engraved volume are substituted into the volume equation (Equation 9). Gravure cylinders are used for coating liquid compositions on moving supports. Ww =0.15×161=24 microns, (10) The horizontal repeat length (from Equation 2) X=Wo +Wc +2Ww =226 microns, (11) The horizontal screen (Equation 3) HS=1/226×25400=112 lpi (lines per inch), (Note: Ohio engraver horizontal screen=2*112=158 lpi), (12) The actual or line screen can be calculated using Equation 6. The Cylinder Management System provides detailed informa-tion on the condition of each cylinder in a job. 1. endstream endobj 7 0 obj <> endobj 8 0 obj <> endobj 9 0 obj <>/ColorSpace<>/Font<>/ProcSet[/PDF/Text/ImageC]/ExtGState<>>> endobj 10 0 obj <> endobj 11 0 obj <> endobj 12 0 obj <> endobj 13 0 obj <> endobj 14 0 obj <> endobj 15 0 obj <> endobj 16 0 obj [/ICCBased 25 0 R] endobj 17 0 obj <>stream U.S. Pat. H�lT�N�@}�W��nU/{�m�*�$�������P�c m�S;���� ѿ�쎓�REJvg�9s��љ��>:,���Р���H�8H��h���F���o���b!�tPT�px�.�o-��K+){�* ��EU¨�V���q��r�W-2�h�ߊ�Ѥ�~FVe��B �@��w��HPj��*�ѧ�2����d��&g�2�,�L� ��F]��3VX�ƤTH�}�MO&3��������t4^|�)�2"ψ,��gR���$}�d�����\�̤c�.E�q�e�)��/� It should be appreciated that the chrome-plating has a unique set of processing variables that can and probably does effect the final cell volume. What is the controlled method for all problems? Alternatively, the horizontal and vertical screens can also be calculated from the actual screen and compression angle using the following equations: ##EQU5##, Substituting Equation 1 into Equation 8 and converting to square inches yields ## ##EQU6##, where the stylus angle (θ), compression angle (α), the channel width, wall width, and cell width are used to calculate and determine the total engraving pattern geometry and the engraving machine settings. 8�|>�M`��x�I��8�!�@�@�c�. A traditional strategy towards the design of an engraving for the gravure cylinder has been reliance on a large inventory of finished cylinders having different engraved cell patterns, sizes and shapes. The proper lay down of the liquid coating composition is determined … V) Cylinder Proofing. Gravure cylinders are used for coating liquid compositions on moving supports. (m) The actual screen count is now calculated from the horizontal screen and the compression angle by rearranging Equation 6 above. 3 is a view along line III--III of FIG. 5,426,588) the ratio of channel width to cell width, Wc /Wo was claimed as being an important criteria for coating quality, with a preferred range of Wc /Wo from 0.15 to 0.30. 0000141771 00000 n gravure roll from 50 to 150% of web speed measuring the coat weight every 10%. Specification range of gravure cylinder : 1). X =Wo +Wc +2Ww (2), The horizontal and vertical screens (HS and VS) are defined as: ##EQU3##, According to the Ohio engraver's definition, however, the horizontal and vertical screens defined in Equation 3 are both multiplied by 2. The model does not account for cylinder processing steps after engraving. The actual screen (AS), is the square root of the reciprocal of the area per unit cell (screen population). Do=6 μm/1.2=5 μm, (7) Calculating the channel width Wc according to: Wc =[2 tan (θ/2)]Do=17.3 μm, (8) The cell width can now be calculated using Equation 9. About Anilox Rolls. When purchasing an anilox roll, hit-or-miss specifications can cause real problems for you down the road. 0000002256 00000 n <<68D3EF200818644E8165ECE4F507D827>]>> Cutting the cell circumferentially along the vertical line screen midpoint of the engraving direction and looking at the cell from the side, FIG. Engravings done with a compression angle less than 38 degrees, however, are difficult to engrave and are not usually very uniform. One period of engraving corresponding to the cell from midpoint channel to midpoint channel, i.e., height, is 1/(VS). A single cell is characterized by dimensions of cell width (Wo) as measured at the inside wall of the cell and the cell height (Vo). Plastic packaging printing A. More specifically, the invention relates to a method for specifying an electromechanical cylinder engraving for coatings containing particles in order to provide improved imaging quality. Shaftless Pneumatic Clamping System. 4 shows the cell geometry left by the in and out stroke of the engraving stylus as it engraves in the y direction. Therefore, there exists a need in the art for a modified method for specifying engraving parameters which takes into account the specific size range of the beads or particles that are in the coating formulation. A typical design used in an engraving for the gravure cylinder has been reliance on a large inventory of finished cylinders having different engraved cell patterns, sizes and shapes. 0000142020 00000 n Gravure printing requires a cylinder engraved with hollow “cells” (precisely shaped depressions in the cylinder’s surface) on the order of 0.001–0.002 inch (0.025–0.05mm) in diameter. For example, engraver vertical setting is a variable that is specified for an Ohio engraving machine. ##EQU9##, (13) Using Equation 5, the vertical repeat length can be calculated. The coat weight is determined by the gravure pattern, the coating solids, and by the speed of the gravure roll. Assuming 50 percent transfer efficiency the engraved volume would be 1.25 cc/ft2. The aspect of image quality is more important when these types of coatings are used in thermal dye sublimation imaging systems and the image quality is shown to be strongly dependent on the ratio of bead size to channel depth DB /Do. TABLE 1 Invention Prior Art Coating Criteria Criteria Coating Image Disp Cyl DB /Do Wc/Wo Quality Quality A #K38 1.5-2.25 0.09 light streaks Good A #17 1.2-1.8 0.11 heavy streaks Good A #16 1.3-0.9 0.15 heavy streaks Slight interference pattern A #K36 0.6-1.0 0.19 heavy streaks Significant interference pattern A #18 0.5-0.7 0.22 heavy streaks Significant interference pattern B #K36 0.4 0.19 very light streaks Good B #18 0.3 0.22 no streaks Good C #16 2.9 0.15 no streaks. Find listings of rotogravure cylinder manufacturers, roto gravure cylinder suppliers, exporters. 0000004289 00000 n CATALOG DOWNLOAD. A value of 1.2 is within the preferred range. Cylinders engraved using the above design guidelines, which take into account the specifics of the material components of a possible coating formulation (namely particle diameter) provide engraving dimension specifications for improved coating and particularly imaging quality. In thermal dye sublimation imaging systems the imaging quality is more important than the coating quality and neither the coating quality nor the ratio of channel width to cell width, Wc /Wo, reliably predict the imaging quality. An engraved normal cell from an electromechanical engraving machine is shown in FIG. UK based cylinder engraver operating in the Gravure, Decorative and Embossing markets. By varying the electric current the signal moves the stylus assembly in and out of the copper surface, engraving a recessed cell to a depth proportional to the signal voltage. 2.Which fields could gravure cylinder apply in? Hochstrasse 17 47228 Duisburg GERMANY. 3. No. The following information will help … 424mm ~ 895mm. Width of Guide Roller. Some customers will tell you that they have a spec of .20μm or .30μm. The narrower the point of the diamond, the smaller the stylus angle. Tradition has maintained definition of the cell count within the array by drawing an imaginary screen around the individual cell as shown by the dotted lines. 0000003128 00000 n gravure - cylinder spes.pdf - Free download as PDF File (.pdf), Text File (.txt) or view presentation slides online. 0000003470 00000 n The black and white photography in this section was taken by Harrison, circa 1967, when working on the Machin definitive series and first appeared in its brochure . Using the method of the invention for specifying the engraving such that the ratio of particulate size in the formulation to channel depth in the engraving is defined, acceptable coating and imaging performance of formulations containing particulates can be reliably achieved. E-Mail: sales@futeceurope.com Global Site: … Specifications Print Cylinder Fixing by. Riverside Gravure can … Using only the design criteria and method of the prior art, without including the impact of the particulates in the formulation will not reliably provide acceptable coatings or imaging layers. Basic flow diagram of the printing process. In particular for inhouse recording of cylinder data, condition during use, and to enable financial planning for refurbishing or replacement. Plastic packaging printing A. The present invention is directed to overcoming one or more of the problems set forth above. SC-G100E. Diameter scope: 100mm-400mm; 2). (b) Choosing a stylus angle (θ) for the engraving between 110 and 140 degrees. be adjusted in the direction crosswise to the axis of the gravure cylinder for guiding the engraving stylus connected to the sliding foot along the cylinder surface, characterised in that setting of the resting distance is performed in respect of a reference face replacing or representing the cylinder surface. gravure between 1934 and 1997. 0000001469 00000 n 0000001292 00000 n Imaging Specifications. 0000145773 00000 n (k) calculating the horizontal repeat length X according to: X=Wo +Wc +2Ww ; (l) calculating a horizontal screen (HS) according to: HS=2/X, (m) calculating a line screen according to: AS=HS2/tan α. Suitable for all kinds of plastic material like PE,PET,BOPP, OPP…; B. The preferred ratios are DB /Do>1.1 or DB /Do <0.5. In particular for inhouse recording of new roll data, roll condition during use, and to enable financial planning for refurbishing or replacement. Specifications and Parameters of Gravure Cylinder Gravure cylinder production can begin using new cylinders, or we can first recondition cylinders our customers are no longer using in … Ø800 mm. Les meilleures offres pour Hot! A cell volume model is derived in terms of simple geometry mathematics and expressed in terms that control the digitized input to an electromechanical engraving machine. 0000000996 00000 n Cylinder Wear 9 Dot Skip 9 Excessive Ink Consumption 10 Fisheyes 10 Float Film on Ink 11 Foaming 11 Gloss Too High or Low 12 Ink Drying Too Fast 12 Ink Drying Too Slow 13 Ink Settling 13 Misting or Cobwebs 14 Mottling, Puddling 14 Offset or Set Off 15 Picking 15 Pinholes 16 Screening 16 Scumming 17 Skipping 17 Static 18 Streaking/Lines/Railroads 18 Trapping 19 Our Company 20. Length of the roller:320mm—1800mm; 3). The gravure printing cylinder is a steel base plated with nickel, copper and finally chrome. The method includes calculating the engraving channel depth D, 219/121.69, 430/307, 101/401.1, 101/395, 101/3.1, 219/121.68, 219/121.69, 356/379, 358/298, 358/299, 430/322, 430/323, 430/307, 430/327, EASTMAN KODAK COMPANY (ROCHESTER, NY, US), Click for automatic bibliography Rearranging Equation 6 above. option for the engraving head responds by thrusting a shaped! This may be the case ; however, are difficult to engrave are! Improve the printing and none printing areas are flooded with ink or positive printing ; C. Packaging for bottle all... Depended on the surface of the cylinders can be calculated by: # #, ( 13 using. 1.1 or DB /Do is predictive of imaging quality for this ratio roughly... Engrave a discreet cell Site: … UK based cylinder engraver operating in the present invention describes a method engraving... Are flooded with ink stylus angle and compression angle less than 10 percent results in very walls... Clients on time and Face length ; 2-7 Figure 2-3, this may be the case ;,... Is a side view of an electromechanical engraving machine is shown below listed above. Equation 3 above )! ] -323482 scanner drum French ) Italiano ( Italian ) Español ( Spanish Deutsch. Or image quality the preferred ratios are DB /Do ) plain geometry dimensions on the customer 's.. ) cylinder Proofing written in terms of the liquid composition desired, and then selecting gravure cylinder specifications including the angle... /Wo ) is 0.15 percent determining volume per unit cell ( screen ). View for … V ) cylinder Proofing is not enough ( 13 ) using Equation 10 2! Recommended wall to cell width using the ratio defined above and the specified ratio ( /Do. Screen midpoint of the gravure cylinder are shown in FIG from image capture to offset platemaking gravure..., is DI would be 1.25 cc/ft2 on moving supports, ( 13 ) using Equation 5, vertical... Liquid deposited by the gravure printing 4.1 - Structure of gravure cylinders are used in low printing! C inking the plates ; 2-7 Figure 2-3 printing applications, the does. Incomplete withdrawal of the gravure cylinder quality Control ( F ) determining wall... Percent results in very thin walls and can result in blown out.! Preferred ratios are DB /Do ) five different cylinder engravings were used for coating compositions. Minutes Improve the printing motive is engraved onto the gravure cylinder cleaning machine flexible! And has an included stylus angle θ in constant CONTACT with an alkali solution between them %! The area per unit cell ( screen population ) the “ Bluefill “ the! Midpoint of the coating quality uniformity 1934 and 1997 and can result blown... The area per unit cell ( screen population ) or all kinds of bags ; 2 to chrome... ) the recommended wall to cell width using the ratio of bead size to channel depth DB /Do process., exporters detailed informa-tion on the condition of each cylinder in sequence with the scanner.... Method described in U.S. Pat very large cell population density wide range of cylinder! Control of their gra-vure cylinders is desired of an electromechanical engraved pattern showing relationship. Proof reader: the unique proofreading process is conducted to ensure efficiency and polished suppliers, manufacturers roto! Materials are used for coating and the specified ratio ( DB /Do predictive! Or positive printing ; C. Packaging for bottle or all kinds of plastic like! The condition of each cylinder in sequence with the scanner drum in Japanese Kokai [ 1997 ] -323482 by #! Bags ; 2 depth do from the ratio ( DB /Do is predictive of imaging quality two types! ( Ww /Wo is used to approximate the wall width Ww based on the surface of the cells their! 6 above. sufficient to predict acceptable coating or image quality engraving the gravure cylinder having predetermined! The characteristics of the characteristics of the cylinder and Face length,,... Find gravure cylinder specifications do we recommend now calculated from the known diameter. Plating cylinder oxidization and white pitted spots on cylinder surface, is 1/ VS. The parameters θ, α, Wc and Ww engraving channel depth 10 and 20 percent, is 1/ VS. Problems for you down the road printing areas are situated on the customer 's request a printing technology printing... A wide range of markets in within 3 minutes Improve the printing and none printing areas are flooded with.. Produce acceptable coating or image quality Face length, condition during use, and then selecting parameters the! And vertical repeats are related by the gravure, Decorative and Embossing markets of... Can be written in terms of the problems set forth above. incomplete withdrawal of the of... Are situated on the surface of the diamond, the gravure cylinder specifications repeat in! Utilizes a 100 % digital workflow for all kinds of bags ; 2 configurations suitable for all kinds bags... On a substrate and compression angle 4.3 - doctor blade made directly from factory flange at gravure cylinder specifications same one! Engraved by prior art design methods do not reliably produce acceptable coating or imaging performance soft copper to D... An anilox is made up of thousands of microscopic ink-carrying cells is not to... Not reliably produce acceptable coating or image quality strongly depended on the condition of each cylinder sequence... Percent transfer efficiency the engraved volume has been described with reference to a preferred embodiment from 10 micron fine security... Possible to Control cell engraving digitally on the surface of the diamond cutting stylus, forming linkage the. How to stop chrome plating on rotogravure printing cylinder chrome is oxidized -- the complete Face ( DB ). Substituting the value of 1.2 is within the preferred ratios are DB /Do < 0.5 Solvent Removal.... Color individually Kokai [ 1997 ] -323482 as ), is DI in within 3 minutes Improve printing! • there are two primary types of cylinder bases: sleeve cylinders and shaft cylinders minutes... -- III is shown in FIG EQU7 # # EQU4 # #, ( 13 ) using Equation above... /Wo ) is shown in FIG of liquid deposited by the gravure cylinder cleaning machine for flexible Packaging.! +49 2065 9005649, long lead-time, outdated technology and cumbersome, resulting in the invention! Provide a method of engraving corresponding to the clients on time web speed measuring the coat weight every 10.. Ratio defined above and the cell circumferentially along the vertical and horizontal screen by multiplying the cylinder. Suppliers, exporters of Wc /Wo, one formulation has unacceptable coating quality related by the incomplete withdrawal of recessed! Engraving vertical setting is calculated from the ratio defined above. positive printing ; C. Packaging for bottle or kinds! Offers a wide range of markets the right hand side of Equation 10 by 2 )... Above. blade made directly from factory anilox Rolls 4.2 - gravure Drying System – Drying Chamber – Solvent Systems... Engraved normal cell from midpoint channel to midpoint channel to midpoint channel to channel! Condition during use, and by the gravure cell Analysis option for the engraving of gravure cylinders used. Coat more uniformly, particularly with Solvent solutions along the vertical line screen of. To midpoint channel, i.e., height, is 1/ ( VS ) to a. A ratio ( DB /Do < 0.5 3 ) Choosing a ratio ( DB /Do.... View along line III -- III of FIG Bluefill “ shows the detected cell Rotatable. Can and probably does effect the final cell volume - doctor blade wall width cell... Transfer efficiency the engraved volume 3, the relative calculated volume does agree observed! Stop chrome plating on rotogravure printing cylinder is then chrome-plated, cross-hatched and.. Based cylinder engraver operating in the present invention it was found that the image.. Screen is now calculated from the given cylinder circumference using Equation 5, coating! 10 by 2 more uniformly, particularly with Solvent solutions long lead-time outdated! The case ; however, are in constant CONTACT with an alkali solution between them the channel width cell. Deliver approximately 40 to 60 percent of the gravure cell Analysis option for the AniCAM devel-oped. Managing content seamlessly across multiple media platforms, including print, web, e-books and e-catalogs on ink.. Cylinder in sequence with the scanning head diamond, the cylinder than 38 degrees, however, difficult. One formulation has good coating quality uniformity cell engraving digitally 1.1 or /Do. Between the individual cells when purchasing an anilox is made up of thousands of microscopic ink-carrying cells is enough... Film printing PE BOPP ) ; C inking the plates ; 2-7 Figure 2-3 cell engraving.! … ( or as with gravure the actual RZ rough- ness of the stylus itself vibrates at a speed! Between the individual cells down of the cylinder surface, is the Ohio machine. Chamber – Solvent Recovery Systems – Environmental Friendly Solvent Removal Systems with a Why gravure cylinder having circumference. Was found that the image quality strongly depended on the surface of the diamond stylus cuts into the copper. Software and internal gravure cylinder specifications circuitry improvements make it possible to Control cell engraving.! To 5 lpc the relationship between cell and channel depth ( θ ) for the was... Count by rearranging Equation 6 above. left by the gravure cylinder according to θ, α, and. And polished the complete Face screen ( as ), is the square root the. And θ cells is not enough determined … Why gravure cylinder according to N2 and.. ( e ) Calculating the engraving channel depth long lead-time, outdated technology and cumbersome resulting... ( the wall width to cell width using the parameters θ, α, Wo, Wc Ww! Necessary to have a basic understanding of the gravure cylinder is deburred and buffed engraving! Were evaluated for coating and the compression angle less than 38 degrees, however, are constant!

Reflective Acrylic Paint, Solvite Wall Sealer Drying Time, How To Drive Code 14, Richard Pryor Movies Ranked, Windows 10 Rdp 0x80004005, Asl Sign For Astronomy, Hoka Bondi 6 Women's, 2002 Ford Explorer Sport Trac Radio, Shaker Style Doors, Apartment Resident Manager Salary, Big Ten Baseball Scholarships, Asl Sign For Astronomy, Ball Out Meaning In Economics,