developing photopolymer plate

It is apparent that many modifications and variations of this invention as hereinabove set forth may be made without departing from the spirit and scope thereof. Again, when processed by this solvent, the plate quality at low exposure times was equivalent to that obtained with perchloroethylene-butanol at higher times. 303855485 - EP 0430233 B1 19980422 - Process and apparatus for developing photopolymer plates - [origin: EP0430233A2] Disclosed herein are a process and apparatus for developing photopolymer plates which are useful for flexographic printing on account of their rubber-like elasticity, capability for development by water washing, and good ink resistance. Privacy Policy Home / Shop / Photopolymer Plates / Steel-backed Photopolymer / KM73 Intaglio plates. Plate quality was again assessed and found to be the same as with the first plate. Wash time for this type of photopolymer was 20 minutes. 4,323,636, 4,323,637, 4,423,135, and 4,369,246 disclose a variety of photopolymer printing plate compositions based on block copolymers of styrene and butadiene (SBS) or isoprene (SIS). This makes an excellent processing tray as the steel-backed plates will stay in place better. Wash time for this type plate in this solution was 20 minutes. endstream endobj startxref Screen printing photopolymer needs to be exposed to a solid step 7 on a 21 step test and letterpress plates need to hold a solid step 18. Photopolymer film, originally a product of the electronics industry, offers several options to transfer paintings, drawings, photocopies and digital printouts to the plate. Flexography India Press is a manufacturer of Flexography Photopolymer Plate making Equipment. This phasing tendency increased as more plates were washed. Platemaking by hand is a straightforward process. KM73 Intaglio plates $ 11.75 – $ 672.00. Again the plate quality was equivalent that obtained with perchloroethylene at a higher exposure time. MacDermid’s Ryan Vest looks at how the plate development and supply side of the fence, sees this technology playing out. Brushing or agitation can be used to facilitate the removal of the non-polymerized portion of composition. This invention presents terpene-based solvents suitable for use in the processing of a wide variety of photopolymer printing plates. Flexography (often abbreviated to flexo) is a form of printing process which utilizes a flexible relief plate. It is a freestanding unit with wheels so can be manoeuvred. The terpenes, being natural products, also produce low safety hazards. In addition the washed-out (uncured) photopolymer tended to separate from this solution. Water should be about room temperature. Direct-to-plate photogravure was not new in 2018. This effect, which is quite unexpected, permits repeated use of the reclaimed solvent over extended periods of time, since the amount of uncured polymer remaining in the solvent is quite low. endstream endobj 88 0 obj <. A wide variety of terpenes are suitable for use in the solvents of this invention including, but not limited to, alloocimene terpenes, dipentene, d-limonene, l-limonene, alpha pinene, citronellol terpenes, linalool, geraniol, and orange terpenes. In fact, this property can be exploited by adding additional non-solvent to the blended terpene/non-solvent system. Both plates had image relief of 30 to 35 mils. The image quickly becomes visible. These terpene-based solvents may be substituted for the synthetic hydrocarbon or halogenated hydrocarbon solvents presently used for processing photopolymer printing plates. Even at 50 square feet, however, the recirculation pump could easily maintain the emulsion. 0 0,3mm), and on top a mylar protective transparent layer. This allowed extended use of the washout solution because the spontaneous polymer separation prevented an excessive build up of photopolymer, allowing continued use of the solution; up to approximately 200-300 square feet of plate area could be processed without distillation. It is important to follow all the points or use equally effective measures. The solvents can also be applied to the plates by any conventional application means including spraying, brushing, dipping (immersing) or any combination thereof. What isn’t exposed because it’s blocked by the black part of the film negative … The following was added to a clean Flex-Light®30"×40" plate processor and recirculated for 10 minutes: 5 Kg OT-100 (dioctyl sodium sulfocuccinate). The total processing capacity of this solution was also greater than that of the perchloroethylene - butanol mixture. 2. generation, Germicidal hard surface cleaning composition, Hard surface cleaning compositions containing pianane, Photopolymer compositions for printing plates, Photosensitive block copolymer composition and elements, <- Previous Patent (Laser marking method). Achieve superb results that hitherto were only achievable in offset or gravure. Our plates are processed using water wash technology with no harsh chemicals. No. Our portfolio of flexographic printing plate solutions consists of photopolymer analog sheet, digital sheet, and liquid. trichloroethane with ethanol). Additional 30"×40"×0.112 " plates were processed until the total square feet of plate washed was 50 square feet. Privacy Policy Dimensions: 100 x 200 mm. USE OF BENZYL ALCOHOL AS A NON-SOLVENT. Asahi Photoproducts, a pioneer in flexographic photopolymer plate development, and Esko, a global provider of integrated hardware and software solutions for the packaging, label and wide format sectors, have today announced their collaboration on developing an innovative and automated flexo platemaking solution. Precision Imaged Durable Plates. Plate exposure times equivalent to those required for perchloroethylene-butanol washed plates were necessary to hold 0.004" lines and 3%, 150 line half tones with this wash solvent. Again the plate quality was superior to that obtained with perchloroethylene under equivalent conditions. A photopolymer or light-activated resin is a polymer that changes its properties when exposed to light, often in the ultraviolet or visible region of the electromagnetic spectrum. There are many processing stages and takes up much time. Furthermore because terpenes are natural products, they are much less toxic in fact they are biodegradable and in general, cost less than synthetic hydrocarbon or chlorinated hydrocarbon solvents. Any emulsifier that provides a homogeneous, stable, emulsion of terpenes and water can be used. The specific embodiments described are given by way of example only and the invention is limited only by the terms of the appended claims. A method of developing photopolymer plates which include portions of cured and portions of uncured photopolymer which comprises the steps of (a) developing a first such plate by applying to said plate a solvent comprising at least one terpene hydrocarbon, said solvent being applied in an amount sufficient to remove substantially all of the uncured photopolymer from said plate during the exposure of said … "Pollution concerns led to development of dry film photoresists which grew out of DuPont’s work on photopolymer printing plates. 28 liters 25% (by weight) aqueous potassium toluene sulfonate, 5 Kg OT-100 (dioctyl sodium sulfosuccinate). Helfen Sie globalen Kunden einfach Photopolymerplatte Machen Ausrüstungen zu beziehen. It is further an object of this invention to present solvent systems which can be used with a wide variety of photopolymeric printing plates, and which present reduced safety problems. does not separate or invert) for at least 5, and preferably 30, minutes since the washout solution is normally circulated in a processing unit which promotes re-emulsification of the mixture. During 1960s and 1970s, all the major companies in the field were also trying to develop photopolymer-based solid flexographic plates. Digital Photopolymer Plates CTI offers a full spectrum of advanced digital services to provide customers with the tools and resources required to simplify the complexities of every project from concept to order fulfillment while ensuring quality control each step of the way. y�˹�[��͙>7.���� Success of photopolymer plates revolutionized flexographic printing. This allowed extended use of the washout solution because the spontaneous polymer separation prevented a build up of photopolymer, permitting continued use of the solution; up to approximately 200-300 square feet of plate area could be processed without distillation. Useful classes of emulsifiers for forming emulsions of these terpene class solvents with water include sulfosuccinates, in particular sodium dioctyl sulfosuccinate (Aerosol OT-100); polyethylene glycol p-isooctylphenyl ethers (Triton X-100); and polyethylene glycol mono(nonylphenyl) ethers (Triton N-57). Because of the greater solvating power of the 100% solvent there was a problem with plate swelling and loss of plate detail. Tokyo, Japan & Brussels, Belgium, November 12, 2020. A useful class of hydrotropes for aiding in emulsion formation and stabilization is the alkali metal salts of aromatic sulfonates such as potassium toluene sulfonate. The following was added to a clean Flex-Light® 30"×40" plate processor: 60 liters of d-limonene (4-isopropenyl-1-methylcylohexene). Written for Polymetaal, Leiden by Wouter Ferro Wouter 2012 Info via Polymetaal a sheet of plexiglass sits! Steps on the scale dry film photoresists are supplied as a sandwich of a wide variety of materials. Luke warm tap water relates to the use of liquid photopolymers introduced by Asahi in 1972 of 30 to mils!, dupont came out with acrylic-based Dycril followed by the normal development wash. Standard pre-heat and prewash followed by Nyloprint by BASF in 1968 this procedure provides a safe alternative to traditional Intaglio... Major photopolymer plate maker products discontinued, we suggest KM photopolymer plates, I don ’ t reccommend.! 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developing photopolymer plate 2021