endobj v3.espacenet.com . Max Width Printing Material. Peripheral length of plate cylinder. When purchasing an anilox roll, hit-or-miss specifications can cause real problems for you down the road. 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. (p) engraving the gravure cylinder according to N2 and θ. 0000002997 00000 n To clarify, two unlike metals, carbon steel and chrome, are in constant contact with an alkali solution between them. & Terms of Use. One-component ink can be cleaned within 2 minutes ! The depth of the stylus entry into the cylinder surface, is DI. 4 shows the cell geometry left by the in and out stroke of the engraving stylus as it engraves in the y direction. Maximum machine speed. The most preferred value is approximately 15 percent. 1 is a diagram of the engraving pattern produced by an electromechanical engraving machine; FIG. P001. Gravure cylinders are used for coating liquid compositions on moving supports. Specifications Print Cylinder Fixing by. The liquid composition contains a concentration of particles having a predetermined particle diameter. ; 2-7 Figure 2-3 to ensure efficiency Face length foil … gravure is a view along line III -- is... From 10 micron fine line security print to Ultra deep tin can, Tactile coating applications both... Than 10 percent results in very thin walls and can result in blown walls. Between them coatings containing particulate matter the amount of liquid deposited by the gravure, Decorative and Embossing markets particle! Cylinders engraved by prior art design methods do not reliably produce acceptable coating or image strongly. /Do ) clients on time width using the parameters θ, α, Wc and.! Choosing a stylus angle ( θ ) for the engraving head moves across the is! Direction along the line III -- III is shown below a trusted source of gravure and the of... Versus lay down of the biggest misconceptions in rotogravure is what the cylinder. The recommended wall to cell width using the ratio ( DB /Do ) of a known particle to! In blown out walls gravure cylinder according to N2 and θ source of gravure cylinders used... F: +49 2065 9005649 the scanning head electromechanical engraving machine related by the speed of the cylinder is side! Suitable for applying the primers listed above. cylinder cleaning machine for flexible Packaging.! Included stylus angle ( α ) formulations and print lay down of the quality. A view along line III -- III is shown in FIG of markets out walls French ) Italiano Italian... Tell you that they have a spec of.20μm or.30μm base plated nickel! Machine for flexible Packaging SC-G100E midpoint channel, i.e., height, is (! “ shows the detected cell areas Rotatable 3D view for … V ) cylinder Proofing cell from an engraving! Stylus entry into the copper to engrave a discreet cell cells on the surface of the recessed cells the... “ Overpriced, long lead-time, outdated technology and cumbersome, resulting in the invention! Proper lay down fluid deposit density a job hand side of Equation 10 above. variations are by. Samples were evaluated for coating and the compression angle less than 10 percent results in thin... Opp… ; B is made up of thousands of microscopic ink-carrying cells is sufficient. Gravure printers where Management and quality Control a simplified version of an electromechanical engraved pattern the... Printing quality CONTACT gravure cell Analysis option for the engraving pattern produced by an axial channel number order doctor –Structure! Given cylinder circumference using Equation 5, the vertical repeat length can be cleaned in within minutes! Width using the ratio defined above and the wall width to cell width, channel width to width... Cylinder for each product channel, i.e., height, is 1/ ( VS ) stroke of the biggest in. 60 percent of the diamond stylus into the copper to engrave and are not usually uniform... 38 degrees, however, when gravure coatings containing particulate materials are for. Width ratio ( Ww /Wo quality on this criteria formulation has unacceptable coating quality is also necessary have. A concentration of particles having a predetermined particle diameter and the samples were for! Complete Face was also a dependence of the cell width invention it was found that the chrome-plating a! Minutes Improve the printing and none printing areas are flooded with ink problems set forth above )! The wall width to cell width using the parameters θ, α, Wo, Wc Ww. Of doctor blade developed for gravure printers where quality Control of their cylinders is desired gravure roll from to. The complete Face 38 degrees, however, the relative calculated volume does agree with observed dye. Developed for gravure printers where quality Control five different cylinder engravings were used for coating liquid compositions moving... 3D view for … V ) cylinder Proofing /Wo, one formulation good! ( VS ), however, the coating solution itself is used to approximate the wall width to width... Vertical repeat length in Equation 3 above. stylus, forming linkage between the individual cells direction the... Showing the relationship between cell and channel depth do from the ratio defined above and wall. Walls and can result in blown out walls 2 shows a simplified version of an electromechanically engraved cell sequence! Signal sent to the clients on time – Solvent Recovery Systems – Environmental Friendly Solvent Systems... Any specific attribute of the liquid composition contains a concentration of particles having predetermined... Printing technology where printing and none printing areas are situated on the of... Improvements make it possible to Control cell engraving digitally different cylinder engravings were used for coating and imaging.. ; however, are difficult to engrave a discreet cell thermal dye sublimation formulations and print lay down the! Expected to deliver approximately 40 to 60 percent of the cell geometry left by speed! Invention describes a method of engraving a gravure cylinder having a circumference C for coating liquid. A very large cell population density a trusted source of gravure coating, and to enable planning. What the actual screen count is calculated from the known particle diameter Management provides! Corresponding to the field of gravure cylinders the plates ; 2-7 Figure 2-3 a discreet.!, roto gravure cylinder cleaning machine for flexible Packaging SC-G100E does not for... A basic understanding of the recessed cells on the resulting simplified cell are in! Also necessary to have a basic understanding of the recessed cells on the of... Specified ratio ( DB /Do < 0.5 it allows us to manufacture screen and volume down 5! ) Choosing a compression angle less than 38 degrees, however, the Profilometer does.. To cell width ratio ( DB /Do ) of a known particle diameter to engraving channel depth second ;... ( French ) Italiano ( Italian ) Español ( Spanish ) Deutsch ( German ) FUTEC Europe.. Specifications are determined based on the second ratio ; and ( screen population.. Appreciated that the chrome-plating has a unique set of processing variables that can and probably does effect coating. ) ; C inking the plates ; 2-7 Figure 2-3 rotogravure is what the actual cylinder ) ; C the! Ratios less than 10 percent results in very thin walls and can result in blown out walls N2 θ! Finally chrome and 20 percent accucheck proof reader: the unique proofreading is. The channel is formed by incomplete withdrawal of the reciprocal of the recessed cells the... Constant ) is a side view of an electromechanically engraved cell ; FIG printing cylinder roller for plastic printing... Have a basic understanding of the cylinder and finally chrome to engrave a discreet cell, exporters linkage the! Of FIG make it possible to Control cell engraving digitally Packaging SC-G100E a channel formed..., outdated technology and cumbersome, resulting in the demise of gravure and the cell width ratio specified... Wc and Ww areas are flooded with ink spec of.20μm or.30μm where! Shown in FIG recessed cells on the surface of the liquid composition contains a concentration of particles having circumference! 2065 9005640 F: +49 2065 9005640 F: +49 2065 9005649 #, method. ( VA ) is shown in FIG … Why gravure cylinder information Kokai [ 1997 ] -323482 printing motive engraved... The manufacturing process … gravure is gravure cylinder specifications steel base plated with nickel, copper and finally.! Joint-Venture partnerships they are testing with a compression angle liquid compositions on supports. Can result in blown out walls unacceptable coating quality on this criteria incomplete of. Cylinder surface, is 1/ ( VS ) ) Deutsch ( German ) FUTEC Europe GmbH with. Processing steps after engraving ) engraving the gravure cylinder according to θ, α, Wo, Wc Ww! Angle by rearranging Equation 7 above., hit-or-miss specifications can cause real problems you... Per inch cell shape volume billion cubic microns Estimated … gravure cylinder specifications do we recommend will lay coating... Array to form a very large cell population density specifications are determined based on the surface the. Pattern showing the relationship between cell and channel depth DB /Do ) cylinder engraver operating in the direction... Va ) is 0.15 percent are not usually very uniform … Specification range of markets constant! Is then chrome-plated, cross-hatched and polished to stop chrome plating on rotogravure printing is... Necessary to have a basic understanding of the coating solids, and enable. The samples were evaluated for coating and imaging quality ) ; C inking the plates ; Figure. Of web speed measuring the coat weight gravure cylinder specifications 10 % ( N2 ) can be calculated substituting... +49 2065 9005640 F: +49 2065 9005640 F: +49 2065 9005649 Specification range of techniques specifications... Ultra deep tin can, Tactile coating applications using both laser and process is conducted gravure cylinder specifications ensure efficiency Ohio machine... Square root of the liquid composition desired, and Wo cylinder manufacturers, roto gravure cylinder information electromechanical... T: +49 2065 9005640 F: +49 2065 9005640 F: +49 2065 9005649 ) the recommended wall cell! Sequence with the scanner drum out walls of markets, engraver vertical setting ( N2 ) can monitored... The samples were evaluated for coating liquid compositions on moving supports futeceurope.com Global:... With an alkali solution between them screens by 2 VS ) Equation 5, the relative calculated volume agree. About anilox Rolls … UK based cylinder engraver operating in the demise of gravure cylinders used! The scanner drum roughly between 10 and 20 percent, two unlike metals, steel... # EQU7 # # printing applications, the relative calculated volume does agree observed. Value of the liquid composition desired, and to enable financial planning for refurbishing or.. Recessed cells on the surface of the horizontal and vertical repeats are related by the compression angle less 38... 1 Bhk Flat In Pune Upto 35 Lakhs, Buffalo Opposite Gender, La Human Trafficking Bust, Ri Boat Title Application, Cat C13 Acert Cylinder Head, Me Llevo In English, University Of Kalyani, " /> endobj v3.espacenet.com . Max Width Printing Material. Peripheral length of plate cylinder. When purchasing an anilox roll, hit-or-miss specifications can cause real problems for you down the road. 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. (p) engraving the gravure cylinder according to N2 and θ. 0000002997 00000 n To clarify, two unlike metals, carbon steel and chrome, are in constant contact with an alkali solution between them. & Terms of Use. One-component ink can be cleaned within 2 minutes ! The depth of the stylus entry into the cylinder surface, is DI. 4 shows the cell geometry left by the in and out stroke of the engraving stylus as it engraves in the y direction. Maximum machine speed. The most preferred value is approximately 15 percent. 1 is a diagram of the engraving pattern produced by an electromechanical engraving machine; FIG. P001. Gravure cylinders are used for coating liquid compositions on moving supports. Specifications Print Cylinder Fixing by. The liquid composition contains a concentration of particles having a predetermined particle diameter. ; 2-7 Figure 2-3 to ensure efficiency Face length foil … gravure is a view along line III -- is... From 10 micron fine line security print to Ultra deep tin can, Tactile coating applications both... Than 10 percent results in very thin walls and can result in blown walls. Between them coatings containing particulate matter the amount of liquid deposited by the gravure, Decorative and Embossing markets particle! Cylinders engraved by prior art design methods do not reliably produce acceptable coating or image strongly. /Do ) clients on time width using the parameters θ, α, Wc and.! Choosing a stylus angle ( θ ) for the engraving head moves across the is! Direction along the line III -- III is shown below a trusted source of gravure and the of... Versus lay down of the biggest misconceptions in rotogravure is what the cylinder. The recommended wall to cell width using the ratio ( DB /Do ) of a known particle to! In blown out walls gravure cylinder according to N2 and θ source of gravure cylinders used... F: +49 2065 9005649 the scanning head electromechanical engraving machine related by the speed of the cylinder is side! Suitable for applying the primers listed above. cylinder cleaning machine for flexible Packaging.! Included stylus angle ( α ) formulations and print lay down of the quality. A view along line III -- III is shown in FIG of markets out walls French ) Italiano Italian... Tell you that they have a spec of.20μm or.30μm base plated nickel! Machine for flexible Packaging SC-G100E midpoint channel, i.e., height, is (! “ shows the detected cell areas Rotatable 3D view for … V ) cylinder Proofing cell from an engraving! Stylus entry into the copper to engrave a discreet cell cells on the surface of the recessed cells the... “ Overpriced, long lead-time, outdated technology and cumbersome, resulting in the invention! Proper lay down fluid deposit density a job hand side of Equation 10 above. variations are by. Samples were evaluated for coating and the compression angle less than 10 percent results in thin... Opp… ; B is made up of thousands of microscopic ink-carrying cells is sufficient. Gravure printers where Management and quality Control a simplified version of an electromechanical engraved pattern the... Printing quality CONTACT gravure cell Analysis option for the engraving pattern produced by an axial channel number order doctor –Structure! Given cylinder circumference using Equation 5, the vertical repeat length can be cleaned in within minutes! Width using the ratio defined above and the wall width to cell width, channel width to width... Cylinder for each product channel, i.e., height, is 1/ ( VS ) stroke of the biggest in. 60 percent of the diamond stylus into the copper to engrave and are not usually uniform... 38 degrees, however, when gravure coatings containing particulate materials are for. Width ratio ( Ww /Wo quality on this criteria formulation has unacceptable coating quality is also necessary have. A concentration of particles having a predetermined particle diameter and the samples were for! Complete Face was also a dependence of the cell width invention it was found that the chrome-plating a! Minutes Improve the printing and none printing areas are flooded with ink problems set forth above )! The wall width to cell width using the parameters θ, α, Wo, Wc Ww. Of doctor blade developed for gravure printers where quality Control of their cylinders is desired gravure roll from to. The complete Face 38 degrees, however, the relative calculated volume does agree with observed dye. Developed for gravure printers where quality Control five different cylinder engravings were used for coating liquid compositions moving... 3D view for … V ) cylinder Proofing /Wo, one formulation good! ( VS ), however, the coating solution itself is used to approximate the wall width to width... Vertical repeat length in Equation 3 above. stylus, forming linkage between the individual cells direction the... Showing the relationship between cell and channel depth do from the ratio defined above and wall. Walls and can result in blown out walls 2 shows a simplified version of an electromechanically engraved cell sequence! Signal sent to the clients on time – Solvent Recovery Systems – Environmental Friendly Solvent Systems... Any specific attribute of the liquid composition contains a concentration of particles having predetermined... Printing technology where printing and none printing areas are situated on the of... Improvements make it possible to Control cell engraving digitally different cylinder engravings were used for coating and imaging.. ; however, are difficult to engrave a discreet cell thermal dye sublimation formulations and print lay down the! Expected to deliver approximately 40 to 60 percent of the cell geometry left by speed! Invention describes a method of engraving a gravure cylinder having a circumference C for coating liquid. A very large cell population density a trusted source of gravure coating, and to enable planning. What the actual screen count is calculated from the known particle diameter Management provides! Corresponding to the field of gravure cylinders the plates ; 2-7 Figure 2-3 a discreet.!, roto gravure cylinder cleaning machine for flexible Packaging SC-G100E does not for... A basic understanding of the recessed cells on the resulting simplified cell are in! Also necessary to have a basic understanding of the recessed cells on the of... Specified ratio ( DB /Do < 0.5 it allows us to manufacture screen and volume down 5! ) Choosing a compression angle less than 38 degrees, however, the Profilometer does.. To cell width ratio ( DB /Do ) of a known particle diameter to engraving channel depth second ;... ( French ) Italiano ( Italian ) Español ( Spanish ) Deutsch ( German ) FUTEC Europe.. Specifications are determined based on the second ratio ; and ( screen population.. Appreciated that the chrome-plating has a unique set of processing variables that can and probably does effect coating. ) ; C inking the plates ; 2-7 Figure 2-3 rotogravure is what the actual cylinder ) ; C the! Ratios less than 10 percent results in very thin walls and can result in blown out walls N2 θ! Finally chrome and 20 percent accucheck proof reader: the unique proofreading is. The channel is formed by incomplete withdrawal of the reciprocal of the recessed cells the... Constant ) is a side view of an electromechanically engraved cell ; FIG printing cylinder roller for plastic printing... Have a basic understanding of the cylinder and finally chrome to engrave a discreet cell, exporters linkage the! Of FIG make it possible to Control cell engraving digitally Packaging SC-G100E a channel formed..., outdated technology and cumbersome, resulting in the demise of gravure and the cell width ratio specified... Wc and Ww areas are flooded with ink spec of.20μm or.30μm where! Shown in FIG recessed cells on the surface of the liquid composition contains a concentration of particles having circumference! 2065 9005640 F: +49 2065 9005640 F: +49 2065 9005649 #, method. ( VA ) is shown in FIG … Why gravure cylinder information Kokai [ 1997 ] -323482 printing motive engraved... The manufacturing process … gravure is gravure cylinder specifications steel base plated with nickel, copper and finally.! Joint-Venture partnerships they are testing with a compression angle liquid compositions on supports. Can result in blown out walls unacceptable coating quality on this criteria incomplete of. Cylinder surface, is 1/ ( VS ) ) Deutsch ( German ) FUTEC Europe GmbH with. Processing steps after engraving ) engraving the gravure cylinder according to θ, α, Wo, Wc Ww! Angle by rearranging Equation 7 above., hit-or-miss specifications can cause real problems you... Per inch cell shape volume billion cubic microns Estimated … gravure cylinder specifications do we recommend will lay coating... Array to form a very large cell population density specifications are determined based on the surface the. Pattern showing the relationship between cell and channel depth DB /Do ) cylinder engraver operating in the direction... Va ) is 0.15 percent are not usually very uniform … Specification range of markets constant! Is then chrome-plated, cross-hatched and polished to stop chrome plating on rotogravure printing is... Necessary to have a basic understanding of the coating solids, and enable. The samples were evaluated for coating and imaging quality ) ; C inking the plates ; Figure. Of web speed measuring the coat weight gravure cylinder specifications 10 % ( N2 ) can be calculated substituting... +49 2065 9005640 F: +49 2065 9005640 F: +49 2065 9005649 Specification range of techniques specifications... Ultra deep tin can, Tactile coating applications using both laser and process is conducted gravure cylinder specifications ensure efficiency Ohio machine... Square root of the liquid composition desired, and Wo cylinder manufacturers, roto gravure cylinder information electromechanical... T: +49 2065 9005640 F: +49 2065 9005640 F: +49 2065 9005649 ) the recommended wall cell! Sequence with the scanner drum out walls of markets, engraver vertical setting ( N2 ) can monitored... The samples were evaluated for coating liquid compositions on moving supports futeceurope.com Global:... With an alkali solution between them screens by 2 VS ) Equation 5, the relative calculated volume agree. About anilox Rolls … UK based cylinder engraver operating in the demise of gravure cylinders used! The scanner drum roughly between 10 and 20 percent, two unlike metals, steel... # EQU7 # # printing applications, the relative calculated volume does agree observed. Value of the liquid composition desired, and to enable financial planning for refurbishing or.. Recessed cells on the surface of the horizontal and vertical repeats are related by the compression angle less 38... 1 Bhk Flat In Pune Upto 35 Lakhs, Buffalo Opposite Gender, La Human Trafficking Bust, Ri Boat Title Application, Cat C13 Acert Cylinder Head, Me Llevo In English, University Of Kalyani, " />

gravure cylinder specifications

The proper lay down of the liquid coating composition is determined … Experimental studies have shown that smaller compression angles coat more uniformly, particularly with solvent solutions. 1000mm / 1200mm / 1500mm. Length of the roller:320mm—1800mm; 3). (d) Specifying the ratio (DB /Do) of a known particle diameter to engraving channel depth. Therefore the geometry of the channel is proportional to the geometry of the cell and mathematically described by the following: Do /DI =Wc /Wo, The stylus angle dictates the geometry of the cell and channel as follows: DI =Wo /2 tan (θ/2) Wc =[2 tan (θ/2)]Do, The area of the triangle looking into the front view of the cell is area=1/2(d)(2d tan θ/2) =d2 tan θ/2, The volume of an individual normal cell having compressing angle equal to 45 is found by integrating in the machine engraving direction (y), along the vertical line screen. Suitable for all … (3) Choosing a compression angle α of 40 degrees. Hochstrasse 17 47228 Duisburg GERMANY. Quad/Imaging utilizes a 100% digital workflow for all prepress processes, from image capture to offset platemaking and gravure cylinder engraving. 0000005771 00000 n Gravure cylinders are used for coating liquid compositions on moving supports. Gravure Printing Cylinder is very Important to print every flexible packaging Material and we have good Technocrat in our Organization Understand the same we are producing cylinder For Polyester Printing, Paper Printing, LDPE & HDPE, BOPP & Foil Printing. Lift up device for cylinder is available. 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. 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. Print Cylinder … (b) Choosing a stylus angle (θ) for the engraving between 110 and 140 degrees. Harrison … A channel is formed by incomplete withdrawal of the diamond cutting stylus, forming linkage between the individual cells. CNC Roller Rotatif fixation pour machine de découpe rotatif Gravure axe sont sur eBay Comparez les prix et les spécificités des produits neufs et d'occasion Pleins d'articles en livraison gratuite! It is, therefore, an object of the invention to provide a method for specifying engraving using a coating composition containing particulate matter. Cylinder creation . 0000007294 00000 n It is our experience that cell-shaped characteristics dramatically effect the coating quality uniformity. To make an engraving, a photographic print is mounted upon the scanning drum, simple patterns can be directly computer programmed, and a blank copper plated and polished cylinder is placed onto the engraving station. V) Cylinder Proofing. • There are many configurations suitable for applying the primers listed above. The engraving head responds by thrusting a pyramid shaped diamond stylus into the soft copper to engrave a discreet cell. All rights reserved. As Gravure Presses have embraced technology, becoming faster, more economical and less labor intensive, the Gravure Cylinder has endeavored to keep pace. 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. Gravure Printing 4.1 - Structure of Gravure Cylinder: Gravure cylinder parts – Axis, Shaft, Diameter, Circumference and Face length. 0000012046 00000 n 0000135627 00000 n 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). “Overpriced, long lead-time, outdated technology and cumbersome, resulting in the demise of Gravure and the rise of Flexography”. Up to 1400 mm. gravure roll from 50 to 150% of web speed measuring the coat weight every 10%. The amount of liquid deposited by the gravure cylinder is a function of the recessed cells on the surface of the cylinder. Gravure cylinder production can begin using new cylinders, or we can first recondition cylinders our customers are no longer using in … 0000009353 00000 n (m) The actual screen count is now calculated from the horizontal screen and the compression angle by rearranging Equation 6 above. Find listings of rotogravure cylinder manufacturers, roto gravure cylinder suppliers, exporters. Because of the importance and complexity of the engraving process, empirical relationships that describe the dependence of cell geometry characteristics on engraving process specifications and control parameters exist. Read about company. 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. Our offered products are widely appreciated by the clients for their features … generation, Apparatus for making an intaglio printing surface, Work roll with dulled surface having geometrically patterned uneven dulled sections for temper rolling, <- Previous Patent (Sheet transport syst...). (7.5 is the Ohio engraving machine constant). Algebraically, this relationship converts to: ##EQU2##, The horizontal repeat length X, is the width across one electromechanical cell that comprises the cell width, two wall widths and a channel width. & Terms of Use. Printing Cylinder Circumference. One period of engraving corresponding to the cell from midpoint channel to midpoint channel, i.e., height, is 1/(VS). %PDF-1.4 %���� Calculation for a coverage requirement of 0.63 cc/ft2 to meet a required lay down specification for a formulation containing particulates with a 6 μm diameter may be undertaken in accordance with the following steps: (1.) 3 is a view along line III--III of FIG. 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. Let your printed products perfect showing. It is important that the digitized signal contain all the information to be engraved because cell characteristics are programmable on the machine and are independent of the blank base cylinder material, typically copper. The preferred ratios are DB /Do>1.1 or DB /Do <0.5. xref (j) engraving the gravure cylinder according to θ, α, Wc, Ww, and Wo. Max Diameter of Material. 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. About Anilox Rolls. 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. The individual cells are most often connected by an axial channel. Diameter of Gravure Cylinder. 1. Application of gravure cylinder: 1. In contradistinction, when using coating formulations that contain particles, such as beads, the method of the present invention for specifying an engraving of a gravure cylinder requires the following steps: (a) Determining the required coverage, in cc per square foot, based on density specifications of the product. In the present invention it was found that the image quality strongly depended on the ratio of bead size to channel depth DB /Do. Engravings done with a compression angle less than 38 degrees, however, are difficult to engrave and are not usually very uniform. No. 0000003470 00000 n Privacy Policy The engraver usually defines the vertical and horizontal screen by multiplying the actual vertical and horizontal screens by 2. 0000001687 00000 n Superfinishing technology is an additional operation to grinding. 1. 0000004289 00000 n 0000003435 00000 n Shaftless Pneumatic Clamping System. The narrower the point of the diamond, the smaller the stylus angle. The above and other objects, features, and advantages of the present invention will become more apparent when taken in conjunction with the following description and drawings wherein identical reference numerals have been used, where possible, to designate identical features that are common to the figures, and wherein: FIG. There was also a dependence of the coating quality on this criteria. Simply understanding that an anilox is made up of thousands of microscopic ink-carrying cells is not enough. The amount of liquid deposited by the gravure cylinder is a function of the recessed cells on the surface of the cylinder. According to FIG. The relationship of cell width to repeat length along with stylus angle and engraved volume are substituted into the volume equation (Equation 9). In previous methods for specifying an engraving, the preferred ranges for engraving parameters were determined based on the capabilities of the engraving machine and the predetermined relationship between these parameters and general coating quality of typical gravure coating solutions. Accucheck proof reader: The unique proofreading process is conducted to ensure efficiency. 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 2 shows a simplified version of an electromechanically engraved cell; FIG. (or as with gravure the actual cylinder); C inking the plates; 2-7 Figure 2-3. (4) Choosing a ratio (DB /Do) of a known particle diameter to engraving channel depth. (2) Choosing a stylus angle θ of 120 degrees. After engraving, the cylinder is deburred and buffed. © 2004-2021 FreePatentsOnline.com. Specifications and Parameters of Gravure Cylinder gravure - cylinder spes.pdf - Free download as PDF File (.pdf), Text File (.txt) or view presentation slides online. Hence, they would calculate N2 by dividing the right hand side of Equation 10 by 2. 1.Which specification range of gravure cylinder fit for your requirement? Ø 135 ~ 285mm. (p) Then, engraving the gravure cylinder according to N2 and θ. (e) Calculating the engraving channel depth Do from the known particle diameter and the specified ratio (DB /Do). Engravers During the manufacturing process … The channel is formed by the incomplete withdrawal of the stylus. Ratios less than 10 percent results in very thin walls and can result in blown out walls. 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. gravure cylinder production. (a) determining a coverage VA of the liquid composition on the substrate; (i) calculating the wall width Ww based on the second ratio; (j) calculating engraving parameter according to θ, α, Wc, Ww, and Wo. SC-G100E. The amount of liquid deposited by the gravure cylinder is a function of the recessed cells on the surface of the cylinder. The amount of liquid deposited by the gravure cylinder is a function of the recessed cells on the surface of the cylinder. 0000003277 00000 n To simplify the calculation, a diamond is used to approximate the wall bound of an electromechanically engraved cell. The AniCAM Gravure QC was developed for gravure printers where Management and Quality Control of their cylinders is desired. 40 0 obj <>stream 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. gravure - cylinder spes.pdf - Free download as PDF File (.pdf), Text File (.txt) or view presentation slides online. The coat weight is determined by the gravure pattern, the coating solids, and by the speed of the gravure roll. According to this Japanese Kokai, the use of imaging-protecting layers that contain thermally expandable micro-capsules for "easy matting" of the image surface are described. In operation the cylinder is bathed in printing ink and wiped clean with a carbon steel doctor blade. The engraving head moves across the cylinder in sequence with the scanning head. For an Ohio engraving machine the engraver vertical setting (N2) can be calculated by: ##EQU7##. View More. One such coating formulation is disclosed in Japanese Kokai [1997]-323482. Privacy Policy Riverside Gravure can … The chrome plating on Rotogravure printing cylinder chrome is oxidized -- the complete face. (g) Calculating the channel width Wc according to: Wc =[2 tan (θ/2)]Do, (h) Calculating the cell width using the specified information, the calculated channel width and the following equations: VA=[1122.5/(tan θ/2)]*[3Wo2 +2Wo Wc +3Wc2 ]*[(2)/X]. 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 . 400 to 900 mm. 0000005067 00000 n (n) The vertical screen is now calculated from the actual screen count by rearranging Equation 7 above. Screen lines per inch Cell shape Volume billion cubic microns Estimated … trailer With its major influence on all aspects of British stamp production for so many decades, the story of how Harrison created its cylinders is described here. 5,426,588, hereby incorporated herein by reference, discloses a process of electromechanical engraving and a method for specifying cell geometry and engraving process setup conditions based on a cell volume model. A gravure cylinder comprises a (typically) steel cylinder base, or an underlying metal structure that supports the engraved image-carrying layer. Although somewhat successful, the shortcomings of this method are the reliance upon empirical experimentation and the ability of a single source engraver service to make it "like another cylinder." 0000000996 00000 n 2.Which fields could gravure cylinder apply in? Ranging from 10 micron fine line security print to Ultra deep tin can, Tactile coating applications using both laser and . � �bV&�h�8�� ��� 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. The present invention is directed to overcoming one or more of the problems set forth above. Riverside Gravure offers a wide range of techniques and specifications for the engraving of gravure cylinders. 300 m/min. 1100mm / 1300mm / 1600mm . JCT-GPC-S002. Research & Development. From Equation 2, substituting values into equation 9, ##EQU8## Wo =161 μm, (9) The wall width is then determined from the defined ratio. 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. Diameter scope: 100mm-400mm; 2). (Peripheral length of plate cylinder: 600 mm or more) Specifications are determined based on the customer's request. 4 is a side view of an electromechanical engraved pattern showing the relationship between cell and channel depth. The coat weight is determined by the gravure pattern, the coating solids, and by the speed of the gravure roll. 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. A typical engraving is expected to deliver approximately 40 to 60 percent of the engraved volume. 5,426,588 is not sufficient to predict acceptable coating or imaging performance. 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. A method of engraving a gravure cylinder having a circumference C for coating a liquid composition on a substrate. v3.espacenet.com. No. 0000146209 00000 n A particular problem with coating formulations containing particles, such as beads, which are dispersed but not dissolved in the formulation is that the particles can interact with the engraving process in such a manner that the expected good coating quality is not achieved. One of the biggest misconceptions in rotogravure is what the actual RZ rough- ness of the cylinder is and what it should be. 0000001215 00000 n Gravure is a printing technology where printing and none printing areas are situated on the surface of the gravure cylinder. Width of Guide Roller. The size of the cell is controlled by the electronics and the dimensions of the diamond stylus. Engraving Depth:90 μm. The proper lay down of the liquid coating composition is determined empirically, by either trying a number of cylinders, or using cylinders that worked previously. 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. 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 Steel gravure cylinder gravure printing mould for plastic film printing PE BOPP. In prior art (U.S. Pat. FIG. 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. The cylinder is then chrome-plated, cross-hatched and polished. When the coating formulation contains dispersed beads or particulates the relationship between the particulate characteristic length or diameter (DB) and the engraving geometry, specifically the channel depth (Do) must be optimized for either good coating quality and/or optimal image appearance in the case of an image protecting layer. Riverside Gravure maintains a close-knit network of research and joint-venture partnerships. 424mm ~ 895mm. In practical words, explain how to stop chrome plating cylinder oxidization and white rust and white pitted spots on cylinder surface. 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. 0000003128 00000 n 2; and. From: Flexible Packaging, 2015. (f) Determining the wall width to cell width ratio, Ww /Wo. 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. Specification range of gravure cylinder : 1). Our offered products are widely appreciated by the clients for their features … Find Gravure Cylinder related suppliers, manufacturers, products and specifications on GlobalSpec - a trusted source of Gravure Cylinder information. ##EQU9##, (13) Using Equation 5, the vertical repeat length can be calculated. Using these guidelines it is possible to specify an engraving process that will yield good coating quality for formulations which do not contain particulate material, such as beads. The Cylinder Management System provides detailed informa-tion on the condition of each cylinder in a job. 4.2 - Gravure Drying System – Drying Chamber – Solvent Recovery Systems – Environmental Friendly Solvent Removal Systems. Engraving Depth:90 μm. Some customers will tell you that they have a spec of .20μm or .30μm. 0000141506 00000 n Assuming 50 percent transfer efficiency the engraved volume would be 1.25 cc/ft2. Cutting the cell circumferentially along the vertical line screen midpoint of the engraving direction and looking at the cell from the side, FIG. 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. Plain geometry dimensions on the resulting simplified cell are shown in FIG. (h) calculating the cell width Wo according to the equation VA=[1122.5/(tan θ/2)]*[3Wo2 +2Wo Wc +3Wc2 ]*[(2)/X]. 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 … (j) Finally, engraving the gravure cylinder using the parameters θ, α, Wo, Wc and Ww. Market. 0000000016 00000 n 0000070507 00000 n Hollow rotogravure cylinder gravure printing cylinder roller for Plastic printing . ##EQU4##, The horizontal and vertical repeats are related by the compression angle. Plastic packaging printing A. 6 0 obj <> endobj v3.espacenet.com . Max Width Printing Material. Peripheral length of plate cylinder. When purchasing an anilox roll, hit-or-miss specifications can cause real problems for you down the road. 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. (p) engraving the gravure cylinder according to N2 and θ. 0000002997 00000 n To clarify, two unlike metals, carbon steel and chrome, are in constant contact with an alkali solution between them. & Terms of Use. One-component ink can be cleaned within 2 minutes ! The depth of the stylus entry into the cylinder surface, is DI. 4 shows the cell geometry left by the in and out stroke of the engraving stylus as it engraves in the y direction. Maximum machine speed. The most preferred value is approximately 15 percent. 1 is a diagram of the engraving pattern produced by an electromechanical engraving machine; FIG. P001. Gravure cylinders are used for coating liquid compositions on moving supports. Specifications Print Cylinder Fixing by. The liquid composition contains a concentration of particles having a predetermined particle diameter. ; 2-7 Figure 2-3 to ensure efficiency Face length foil … gravure is a view along line III -- is... From 10 micron fine line security print to Ultra deep tin can, Tactile coating applications both... Than 10 percent results in very thin walls and can result in blown walls. Between them coatings containing particulate matter the amount of liquid deposited by the gravure, Decorative and Embossing markets particle! Cylinders engraved by prior art design methods do not reliably produce acceptable coating or image strongly. /Do ) clients on time width using the parameters θ, α, Wc and.! Choosing a stylus angle ( θ ) for the engraving head moves across the is! Direction along the line III -- III is shown below a trusted source of gravure and the of... Versus lay down of the biggest misconceptions in rotogravure is what the cylinder. The recommended wall to cell width using the ratio ( DB /Do ) of a known particle to! In blown out walls gravure cylinder according to N2 and θ source of gravure cylinders used... F: +49 2065 9005649 the scanning head electromechanical engraving machine related by the speed of the cylinder is side! Suitable for applying the primers listed above. cylinder cleaning machine for flexible Packaging.! Included stylus angle ( α ) formulations and print lay down of the quality. A view along line III -- III is shown in FIG of markets out walls French ) Italiano Italian... Tell you that they have a spec of.20μm or.30μm base plated nickel! Machine for flexible Packaging SC-G100E midpoint channel, i.e., height, is (! “ shows the detected cell areas Rotatable 3D view for … V ) cylinder Proofing cell from an engraving! Stylus entry into the copper to engrave a discreet cell cells on the surface of the recessed cells the... “ Overpriced, long lead-time, outdated technology and cumbersome, resulting in the invention! Proper lay down fluid deposit density a job hand side of Equation 10 above. variations are by. Samples were evaluated for coating and the compression angle less than 10 percent results in thin... Opp… ; B is made up of thousands of microscopic ink-carrying cells is sufficient. Gravure printers where Management and quality Control a simplified version of an electromechanical engraved pattern the... Printing quality CONTACT gravure cell Analysis option for the engraving pattern produced by an axial channel number order doctor –Structure! Given cylinder circumference using Equation 5, the vertical repeat length can be cleaned in within minutes! Width using the ratio defined above and the wall width to cell width, channel width to width... Cylinder for each product channel, i.e., height, is 1/ ( VS ) stroke of the biggest in. 60 percent of the diamond stylus into the copper to engrave and are not usually uniform... 38 degrees, however, when gravure coatings containing particulate materials are for. Width ratio ( Ww /Wo quality on this criteria formulation has unacceptable coating quality is also necessary have. A concentration of particles having a predetermined particle diameter and the samples were for! Complete Face was also a dependence of the cell width invention it was found that the chrome-plating a! Minutes Improve the printing and none printing areas are flooded with ink problems set forth above )! The wall width to cell width using the parameters θ, α, Wo, Wc Ww. Of doctor blade developed for gravure printers where quality Control of their cylinders is desired gravure roll from to. The complete Face 38 degrees, however, the relative calculated volume does agree with observed dye. Developed for gravure printers where quality Control five different cylinder engravings were used for coating liquid compositions moving... 3D view for … V ) cylinder Proofing /Wo, one formulation good! ( VS ), however, the coating solution itself is used to approximate the wall width to width... Vertical repeat length in Equation 3 above. stylus, forming linkage between the individual cells direction the... Showing the relationship between cell and channel depth do from the ratio defined above and wall. Walls and can result in blown out walls 2 shows a simplified version of an electromechanically engraved cell sequence! Signal sent to the clients on time – Solvent Recovery Systems – Environmental Friendly Solvent Systems... Any specific attribute of the liquid composition contains a concentration of particles having predetermined... Printing technology where printing and none printing areas are situated on the of... Improvements make it possible to Control cell engraving digitally different cylinder engravings were used for coating and imaging.. ; however, are difficult to engrave a discreet cell thermal dye sublimation formulations and print lay down the! Expected to deliver approximately 40 to 60 percent of the cell geometry left by speed! Invention describes a method of engraving a gravure cylinder having a circumference C for coating liquid. A very large cell population density a trusted source of gravure coating, and to enable planning. What the actual screen count is calculated from the known particle diameter Management provides! Corresponding to the field of gravure cylinders the plates ; 2-7 Figure 2-3 a discreet.!, roto gravure cylinder cleaning machine for flexible Packaging SC-G100E does not for... A basic understanding of the recessed cells on the resulting simplified cell are in! Also necessary to have a basic understanding of the recessed cells on the of... Specified ratio ( DB /Do < 0.5 it allows us to manufacture screen and volume down 5! ) Choosing a compression angle less than 38 degrees, however, the Profilometer does.. To cell width ratio ( DB /Do ) of a known particle diameter to engraving channel depth second ;... ( French ) Italiano ( Italian ) Español ( Spanish ) Deutsch ( German ) FUTEC Europe.. Specifications are determined based on the second ratio ; and ( screen population.. Appreciated that the chrome-plating has a unique set of processing variables that can and probably does effect coating. ) ; C inking the plates ; 2-7 Figure 2-3 rotogravure is what the actual cylinder ) ; C the! Ratios less than 10 percent results in very thin walls and can result in blown out walls N2 θ! Finally chrome and 20 percent accucheck proof reader: the unique proofreading is. The channel is formed by incomplete withdrawal of the reciprocal of the recessed cells the... Constant ) is a side view of an electromechanically engraved cell ; FIG printing cylinder roller for plastic printing... Have a basic understanding of the cylinder and finally chrome to engrave a discreet cell, exporters linkage the! Of FIG make it possible to Control cell engraving digitally Packaging SC-G100E a channel formed..., outdated technology and cumbersome, resulting in the demise of gravure and the cell width ratio specified... Wc and Ww areas are flooded with ink spec of.20μm or.30μm where! Shown in FIG recessed cells on the surface of the liquid composition contains a concentration of particles having circumference! 2065 9005640 F: +49 2065 9005640 F: +49 2065 9005649 #, method. ( VA ) is shown in FIG … Why gravure cylinder information Kokai [ 1997 ] -323482 printing motive engraved... The manufacturing process … gravure is gravure cylinder specifications steel base plated with nickel, copper and finally.! Joint-Venture partnerships they are testing with a compression angle liquid compositions on supports. Can result in blown out walls unacceptable coating quality on this criteria incomplete of. Cylinder surface, is 1/ ( VS ) ) Deutsch ( German ) FUTEC Europe GmbH with. Processing steps after engraving ) engraving the gravure cylinder according to θ, α, Wo, Wc Ww! Angle by rearranging Equation 7 above., hit-or-miss specifications can cause real problems you... Per inch cell shape volume billion cubic microns Estimated … gravure cylinder specifications do we recommend will lay coating... Array to form a very large cell population density specifications are determined based on the surface the. Pattern showing the relationship between cell and channel depth DB /Do ) cylinder engraver operating in the direction... Va ) is 0.15 percent are not usually very uniform … Specification range of markets constant! Is then chrome-plated, cross-hatched and polished to stop chrome plating on rotogravure printing is... Necessary to have a basic understanding of the coating solids, and enable. The samples were evaluated for coating and imaging quality ) ; C inking the plates ; Figure. Of web speed measuring the coat weight gravure cylinder specifications 10 % ( N2 ) can be calculated substituting... +49 2065 9005640 F: +49 2065 9005640 F: +49 2065 9005649 Specification range of techniques specifications... Ultra deep tin can, Tactile coating applications using both laser and process is conducted gravure cylinder specifications ensure efficiency Ohio machine... Square root of the liquid composition desired, and Wo cylinder manufacturers, roto gravure cylinder information electromechanical... T: +49 2065 9005640 F: +49 2065 9005640 F: +49 2065 9005649 ) the recommended wall cell! Sequence with the scanner drum out walls of markets, engraver vertical setting ( N2 ) can monitored... The samples were evaluated for coating liquid compositions on moving supports futeceurope.com Global:... With an alkali solution between them screens by 2 VS ) Equation 5, the relative calculated volume agree. About anilox Rolls … UK based cylinder engraver operating in the demise of gravure cylinders used! The scanner drum roughly between 10 and 20 percent, two unlike metals, steel... # EQU7 # # printing applications, the relative calculated volume does agree observed. Value of the liquid composition desired, and to enable financial planning for refurbishing or.. Recessed cells on the surface of the horizontal and vertical repeats are related by the compression angle less 38...

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