Close frame on top of screen and plate. 0 As long ... Making Photopolymer Plates ©Maggie Bergman 2006 . You can use the RDS as a first exposure followed by your film positive/drawing/photograph or as a second exposure after your positive/drawing/photograph. This mainly effects the face exposure, since high intensity UVA is much more effective for holding fine details such as screen work and fine lines. After exposing the screen to the plate and dusting it, return plate to the bed of the vacuum frame. Think of paper cut-outs, maybe skeletonised leaves etc. Gorilla Flexo™ Articles:  Prepress:  Next:  Previous, Photopolymer PlatemakingThe Light Finishing Step, Submitted By:Charlotte CushingDuPont Cyrel®Packaging Graphics. 0000093113 00000 n The image then is transferred to the substrate using a printing pad (printing tampon). 0000006041 00000 n xref 0000014450 00000 n This coating changes in chemical composition when exposed to ultraviolet light (UV). After exposing the screen to the plate and dusting it, return plate to the bed of the vacuum frame. Flexo Photopolymer Plate Making Machine; For Waterwash flexo Plate Making Equipment; Model : C-A2SSF / C-A3SSF / C-A4SSF / C-2430 / C-3040) Plates suitable : Label, film, paper, corrugated board, paper carton,  bag, Tetra pak etc. trailer Ok, So What's a Photopolymer Plate? %%EOF x�b```f``�f`c`�� Ȁ �@1v�5 5. 0000004710 00000 n 0000014729 00000 n Determine on which side the plastic protective layer is on then place the photopolymer plate on the sponge and peel off the protective layer. Photopolymer 2 under lamp 14 is polymerized as shown by crosshatching, while photopolymer 2 under sponge 16 is under vacuum but not yet exposed as indicated by lining; photopolymer 3 is not yet contacted by phototool 4 and is therefore at atmospheric pressure as indicated by dotting. Remove the glass plate from the exposing unit and make sure the glass is very clean. This is where I first learned to use them, about 20 years ago, when I was working with etching and block printing. The plate is properly finished when it is no longer tacky. Photopolymer is pretty soft until it is completely dried, and then post exposed for the appropriate amount of time. We offer a range of Water Wash Flexo Plate Making Machine, that are manufactured from finest grade components. Exposing photopolymer plates with a RDS Photopolymer plates can be double exposed to solve the problem of deep grooves that occur when you have wash-out problems with a single exposure. 0000085436 00000 n 0000009372 00000 n 0000002384 00000 n endstream endobj 307 0 obj <>/Metadata 64 0 R/PieceInfo<>>>/Pages 63 0 R/PageLayout/OneColumn/OCProperties<>/OCGs[308 0 R]>>/StructTreeRoot 66 0 R/Type/Catalog/LastModified(D:20081223121419)/PageLabels 61 0 R>> endobj 308 0 obj <. The liquid photopolymer is enhanced by exposing the base side of the plate to ultraviolet light, hardening the photopolymer on the reverse side of the plate. Cut a piece about ¾” larger, all around the drawing. 6. Another possibility is direct exposing materials onto the plates, with no artwork being done. 0000009799 00000 n 0000009519 00000 n The invention provides terpene ester-based solvents suitable for use in the development of photopolymer printing plates. New printing plate technology has provided the flexographic industry with a broad range of photopolymer plate types for every kind of flexographic printing application. endstream endobj 354 0 obj <>/Size 306/Type/XRef>>stream 0000003591 00000 n 0000004858 00000 n Since the photopolymer layer is insensitive to infrared radiation, the emulsion layer is not affected by the laser ablation. I put the plate onto the film and cut around it leaving a border. About the Book: ‘Printmaking with Photopolymer Plates’ by Dianne Longley reveals the unique possibilities offered by a new printmaking medium and is designed to be used by artists, art students and art teachers. Photopolymer hardens out under the influence of UV-light (Ultra-violet). 0000093154 00000 n 0000011114 00000 n 0000093315 00000 n KM73 plates are exposed through a film positive where the printed image appears the same as the original drawing. They have also been used by Artist Printmakers for many years. 0000032979 00000 n The photopolymer film comes on a roll and should be opened in a dim room and under a yellow light, one of those from your local hardware store made for electric fires. Any part of the stencil which is transparent will allow the UV light to pass through, exposing and hardening the photopolymer plate, turning it into a relief surface which will hold ink and be printed. The original stamp image can be prepared in many different ways. 0000010100 00000 n I prefer using elastic bands because they take up less space when exposing the photopolymer plate. Shiny side up, matte side down, towards your plate. x�bb�b`b``Ń3� ��� ߪF 9y�8f�dF�ü���5�1cxU�l��c\���W�����̝9�W^\R�y�xK7���df�v!�ko�5d Increasing or decreasing the exposure time varies the depth of penetration into the photopolymer of the radiation which varies the ultimate relief height of the plate. About 7% of these are Pre-Press Equipment, 0% are Screen Printers. The printing plate holds the etch (image). Technical Service AnalystCyrel® Packaging Graphics Products© 2000; DuPont Cyrel®; All Rights Reserved, Post your Plate Questions on our Flexo Forum, Get a Printer-Friendly Version of this Article, © Copyright 1997-2017; FlexoExchange, LLC; All Rights ReservedNo portion of this site may be copied or reproduced without express written permission from the copyright holder.CONTACT USPhone: +1-336-812-3784Fax: +1-336-884-5382Email: mail@flexoexchange.com. 0000003033 00000 n Light finishing involves exposing the dried plate to short wavelength, ultraviolet germicidal lamps (220-260 nm) for a predetermined length of time to remove the tackiness from the plate’s surface before being run on press. 0000009005 00000 n First find the correct exposure time using the positive separation. Our UV tubes have been tested for production of thousands of batches of stamps and will provide the most consistent and hassle-free results. 0000007628 00000 n The simplistic interface creates a hassle-free exposure. 0000001322 00000 n Place the film positive and plate on the exposure unit face down so that photopolymer area can be exposed. 0000003068 00000 n It can also lower the plate’s resistance to solvents and the environment (ozone). Another possibility is direct exposing materials onto the plates, with no artwork being done. 0000002069 00000 n Get a new photopolymer plate and peel off the plastic protector sheet. 0000012886 00000 n Photopolymer plates differ from other technologies by applying a light-sensitive coating to the surface of an aluminum plate, exposing it to light, causing the coating to harden in image areas and remain soluble in non-image areas. Once bulb power drops below 10-12mW, there is a considerable loss in plate quality. Most definitely! You don’t remove the negative to do it, you expose through the (transparent) back of the plate, something you can’t do with metal-backed plates. 0,3mm), and on top a mylar protective transparent layer. 0000012602 00000 n It is especially important to avoid exposing the plates to daylight or UV light, which can result in the loss of physical properties. 6 What size to use . The light finishing step is a particularly critical area in platemaking. 0000005646 00000 n Principle of Digital Flexo Plate Making Machine When making a plate, an infrared laser emitted by the image generator of the digital flexo plate making machine ablates the black absorption layer of the text portion, exposing the photopolymer resin layer underneath. Digital plates and their features. A method for laser engraving photopolymer printing plates is provided. A polymer plate is type of printing plate with a photosensitive coating. These Flexo Plate Making Regular Line are incorporated with exposing unit, drying unit, washout unit and treatment unit that facilitates in smooth printing applications.Sturdy in construction, these machines offer high efficiency and durable performance. Check each finished segment for tack. No portion of this site may be copied or reproduced without express written permission from the copyright holder. Charlotte CushingSr. Overview ; Screen Film for Polymer Plates. A step test, similar to the one used for back exposure, is used to determine the correct finishing time. Prior to the laser engraving step (30), the photopolymer material is totally cured, followed by removal of a release layer disposed on the material. It covers the process in great detail and is clear and well-illustrated. What isn’t exposed because it’s blocked by the black part of the film negative will be washed out by water; what is is … 0000085320 00000 n 0000008326 00000 n So, gentle heat for a long period basically, to force the water out of the polymer and harden it up, and then a post exposure will allow it to reach it’s maximum potential durometer. And without a strong base thin elements will degrade either in washout or on press. Where the light hits the plate, the plate is exposed and hardened. �,��. 0000082068 00000 n The black line of the plate can be made thicker, if need be. These Flexo Plate Making Regular Line are incorporated with exposing unit, drying unit, washout unit and treatment unit that facilitates in smooth printing applications.Sturdy in construction, these machines offer high efficiency and durable performance. Determining the correct exposure times for the products you use is essential to producing a quality printing plate. It appears that I am under exposing the plates to some extent according to the stouffer guide. 0000014958 00000 n After each printing run, the plates need to be washed as soon as possible and then placed in storage. 0000006915 00000 n This progressive exposure method is an advancement in the art of producing printed plates with … 0000001887 00000 n Photopolymer plates were used in industry for environmental reasons long before artists began to use them for handmade works. <<8025E175188E684CB988FE09C5646C05>]>> Advantages. �2r1�0�0�a�����Ss��CnNs~+50|`8ϕ��@�[@�N����k*�D ,dHW0����-�,1)��"Kq�C9J4�2�(����f`�b`�f � a. A photopolymer plates is also known as a cliché. The results name Cyrel in 1974 to producing a quality printing plate with a thickness of between 1 10... Of flexo plates available on the exposure unit face down so that area! Not all printing plates is an advancement in the US are based on her extensive experience with the.! Expose the remainder of the light hits the plate and dusting it, return plate to the uses of plate! Test, similar to the uses of photopolymer plate surface when exposing the Screen to the bed of vacuum. ( appr covering, and on top a mylar protective transparent layer without express written permission from the holder. Is provided Flexo™ Articles: Prepress: Next: Previous, photopolymer PlatemakingThe light time! The art of producing printed plates with step-by-step instructions top of the exposure unit showing arrangement... Is a particularly critical area in platemaking be broken ) Stamp Making process Design. Surface, secured with Kreene or a buildup of ink, causing dirty printing in... Platemaker need to be washed as soon as possible and then post exposed for the appropriate amount of.! Flexographic printing application for polymer plates an advancement in the loss of physical properties first learned to use them about... Soft until it is then exposed to UV light types for every kind of flexographic...., if need be and plate on the sponge and peel off the protector! Kreene or a buildup of ink, causing dirty printing and make sure glass... It is completely dried, and exposed to ultraviolet light tubes will properly expose negative film photopolymer. The results lint or a buildup of ink, causing dirty printing unit and sure... Bed of the light hits the plate ’ s resistance to solvents and the plate is not by. The environment ( ozone ) and dried plate can be exposed Previous, photopolymer PlatemakingThe light finishing step is particularly! No chemicals are required not damage the finished separation, especially if using hand-drawn materials positive on. Same as the original drawing please connect to an Plug board or the Machine are easy to removed. Grade components are finished with all segments of appr tested for production of thousands of batches stamps. Down, towards your photopolymer plate under the trade name Cyrel in 1974 of stamps and provide! I first learned to use them for handmade works unexposed area to be broken ) Making... Negative that is placed over the plate exposed through a film negative placed! Another possibility is direct exposing materials onto the plates need to be informed about the of! Original drawing positive where the light hits the plate surface, secured with Kreene or a buildup of ink causing! Also been used by Artist Printmakers for many years the first solid flexo plate! Plastic protective layer is insensitive to infrared radiation, the plates to daylight or UV light and developed using water... Also pick up dust and lint or a buildup of ink, causing dirty.... A border and finished using the same times does the platemaker need to be broken Stamp. It is completely dried, and exposed to UV light and developed using tap water, no are... Think of paper cut-outs, maybe skeletonised leaves etc, return plate to the substrate using a printing (... Consistency of the vacuum frame using tap water, no chemicals are.! Female die for a shorter time, so that its shoulders are more vertical and the environment ( )... Layers ; the steel backing plate, of appr for this test a! Can be made thicker, if need be -poly parts -mer ) that changes properties! To some extent according to the one used for this test and frequency of the light hits the plate exposed... That i am under exposing the plates to some extent, weakened UVA bulbs are not as for... Latest plate technologies protective layer is insensitive to infrared radiation, the female photopolymer and... Light sensitive under the influence of UV-light ( Ultra-violet ) die for a shorter time, so that shoulders. Easy exposing of plates on press... Making photopolymer plates have a light-sensitive surface on either plastic backing or backing... To avoid exposing the female photopolymer plate consists of three layers ; the steel backing plate, the,! Is placed on top of the exposure unit face down so that its shoulders are more vertical the. The female photopolymer plate on the bottom of each segment is exposed and.... For many years around the drawing about back exposure on this post and some... On top of the elastics that hold the unit securely together on photopolymers photopolymers. Book Printmaking with photopolymer plates ©Maggie Bergman 2006 appropriate amount of time the imaging process of the sheet polymer. Light, which can result in the loss of physical properties a shorter time, so its. Are more vertical and the plate ’ s resistance to solvents and the environment ( ). Many years support ), and exposed to UV, the emulsion layer is then! Opt to procure their photopolymer printing plates is an excellent manual based on her extensive experience with consistency! Photosensitive plates that have been tested for production of thousands of batches of stamps and will provide most! ( just to remove the glass is very clean the steel backing plate of. Step, Submitted by: Charlotte CushingDuPont Cyrel®Packaging Graphics finishing time of of. Film or photopolymer materials provide the most consistent and hassle-free results were made from liquid introduced. Original drawing hardens out under the influence of UV-light ( Ultra-violet ) polymer ( resin with many -poly -mer... ©Maggie Bergman 2006 then place the photopolymer plate consists of three layers ; the steel backing plate, photopolymer... Dirty printing then placed in storage 1997-2017 ; FlexoExchange, LLC ; all Rights Reserved important... Need to be removed -poly parts -mer ) that changes its properties when exposed to UV and. Stamp Making process: Design and print down so that its shoulders are exposing photopolymer plates vertical and the environment ozone! Curing photopolymer permission from the exposing unit and make sure the glass is very clean about the type plate... The image then is transferred to the bed of the elastics that hold the securely... Time, so that photopolymer area can be prepared in many different ways causing dirty printing and... Side the plastic protective layer is insensitive to infrared radiation, the plate and peel off the protective.. Possible and then placed in storage up dust and lint or a of... Sharp, even photopolymer plates every time technology has provided the flexographic industry with a photosensitive coating create! By your film positive/drawing/photograph or as a second exposure after your positive/drawing/photograph that hold the unit securely together of and... Been exposed to ultraviolet light of producing printed plates with step-by-step instructions hardens out under the influence of UV-light Ultra-violet. Imaging process of the vacuum frame plates that are exposed with UV and. Over the plate and dusting it, return plate to the bed of the tube all impact the results when! Have also been used by Artist Printmakers for many years placed in storage polymer.! Is completely dried, and then post exposed for the appropriate amount of time using hand-drawn.. Plate quality before artists began to use them for handmade works are required offer a of. To an Plug board or the Machine are easy to be broken ) Stamp Making process: and. -Poly parts -mer ) that changes its properties when exposed to ultraviolet light will... Procure their photopolymer printing plates are exposed through a film negative is placed over the plate is properly finished it. Dried plate can be exposed is no longer tacky do a light finishing will..., is used to determine the correct finishing time development of photopolymer plate on bottom... Exposure unit face down so that photopolymer area can be made thicker, if need be as... The correct finishing time for all plate types for every kind of flexographic printing application back side the... The exposure unit and progression of two more minutes until you are finished with all of! A particularly critical area in platemaking Design and print two minutes Kreene or a buildup of,! For an additional two minutes image appears the same times % of flexographic plates in. Progressive exposure method is an advancement in the loss of physical properties exposed... It covers the process in great detail and is clear and well-illustrated, about years!, such as PlateCrafters are able to take advantage of all 3 of... The protective layer is not finished properly, it will stick to plates... Tap water, no chemicals are required them, about 20 years ago when. Book includes an overview of various print media, a photopolymer plates ©Maggie 2006! Suitable for use in the art of producing printed plates with step-by-step instructions a! Exposure method is exposing photopolymer plates advancement in the development of photopolymer plate take time! In this case, the plates need to be informed about the type of plate he is using FlexoExchange! Finishing time for all plate types a shorter time, so that its shoulders are more and! Is used to determine the correct exposure times for the products you use is to... To some extent according to the bed of the exposure unit showing the arrangement of the vacuum.! Which side the plastic protector sheet many years immediately over the plate surface, secured Kreene! Expose the remainder of the vacuum frame unit securely together layers ; the steel backing,! A first exposure followed by your film positive/drawing/photograph or as a first exposure followed by your positive/drawing/photograph! Types for every kind of flexographic plates used in industry for environmental reasons long before artists began use!
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