This permits repeated use of the solvent without the need for distillation to remove uncured photopolymer. Ideal for the pad-printing machine K-1. Terpene-based solvents also lend themselves to recovery by steam or vacuum distillation which permits recovery of the solvents at lower distillation temperatures than conventional solvents. USE OF BENZYL ALCOHOL AS A NON-SOLVENT. The composition may also be processed with water soluble organic solvents in aqueous basic solution, such as sodium hydroxide/isopropyl alcohol/water; sodium carbonate isopropyl alcohol/water; sodium carbonate/2-butoxyethanol water; sodium borate/2-butoxyethanol/water; sodium silicate/2-butoxyethanol/water; sodium borate/2butoxyethanol/water; sodium silicate/2-butoxyethanol / glycerol/water; and sodium carbonate/2-(2-butoxyethoxy) ethanol/water. It’s a logarithmic scale, so for each step you need to move up, you raise your exposure 1.5 times if I remember correctly. Precision Imaged Durable Plates. Other studios have been using photopolymer plates and exposing screens for years. %%EOF In either case, during the development step the solvent can be applied in any convenient manner such as by pouring, immersing, spraying, or roller application. Certain blends, it has been found, promote spontaneous separation of the uncured photopolymer from the wash solution after the plate is developed. 3500810 8" x 10" discontinued 35001216 12" x 16" discontinued 35001620 16" x 20" discontinued Note: Plates may be cut to custom sizes using a photopolymer plate cutter. USE OF BENZYL ALCOHOL AS A NON-SOLVENT. Torelief and Aquaflex water wash photopolymer plates are produced in a wide variety of types and sizes, and to the highest standards. This procedure provides a safe alternative to traditional photo intaglio printing. The following was added to a clean Flex-Light® 30"×40" plate processor: 60 liters of d-limonene (4-isopropenyl-1-methylcylohexene). Helfen Sie globalen Kunden einfach Photopolymerplatte Machen Ausrüstungen zu beziehen. China Plate Developing Machine - Select 2021 Plate Developing Machine products from verified China Plate Developing Machine manufacturers, suppliers on Made-in-China.com. CTP Processor Printing Machinery Adaptive to High-Speed Photosensitization Plates UV LED technology may be the most established emerging technology today. This invention presents terpene-based solvents suitable for use in the processing of a wide variety of photopolymer printing plates. © 2004-2021 FreePatentsOnline.com. This is quite inconvenient, especially if different photopolymer systems are to be processed at the same facility. No. 110 0 obj <>/Encrypt 88 0 R/Filter/FlateDecode/ID[<6D57D0877E5E2F83868D684A7DEB8F01>]/Index[87 38]/Info 86 0 R/Length 114/Prev 353369/Root 89 0 R/Size 125/Type/XRef/W[1 3 1]>>stream The perchloroethylene--butanol mixture required 6 minutes face exposure to produce an equivalent plate quality. Again plate quality was equivalent to that obtained with perchloroethylene at a higher exposure time. Half as thick (.017" ) as the KM83 plates They need an oxygen barrier layer as an overcoat layer to prevent oxygen, which hinders polymerization reaction, from entering into the photosensitive layer. Attach sticky tape to one corner and peel back. Photopolymer in emulsion. Water should be about room temperature. Manual written for Polymetaal, Leiden by Wouter Ferro Wouter 2012 Info via Polymetaal. U.S. Pat. Manufacturer of Photopolymer Flexo Printing Plate Machine - Flexo Plate Exposure Unit, Printing Plates Machinery, 2.84 mm Flexo Photopolymer Plate Making Machine and Corrugated Printing Plates Making Machine offered by Innovative Flexotech Private Limited, Ahmedabad, Gujarat. tetrachloroethylene and n-butanol. No phasing of this solution was observed. Plate quality was again assessed and found to be the same as with the first plate. Specialists, such as PlateCrafters are able to take advantage of all 3 phases of the latest plate technologies. Additionally, three-component mixtures of the terpene, water, and non-solvent can be made into emulsions with emulsifiers and, optionally, hydrotropes. Minimise skin contact with fixers and plate developers. ‘Direct To Plate’ Photopolymer Photogravure. 28 liters 25% (by weight) aqueous potassium toluene sulfonate, 5 Kg OT-100 (dioctyl sodium sulfosuccinate). The solvents, which may be terpenes alone, terpenes mixed with organic non-solvents, or terpenes emulsified with water are effective in developing a wide variety of photopolymer printing plates and can produce images superior to those obtained with commercially available solvents currently used in such applications. The following mixture was added to a clean Flex-Light® 30"×40" plate processor and recirculated for 10 minutes: 67 liters of d-limonene (4-isopropenyl-1-methylcylohexene). 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). It also look fun and gives many opportunities for individual practitioners to explore their ideas. First photopolymer flexo plates were made from liquid photopolymers introduced by Asahi in 1972. Finden Sie Hohe Qualität Heißer Verkauf Ps Platte Entwicklung Entwicklung Hersteller Heißer Verkauf Ps Platte Entwicklung Entwicklung Lieferanten und Heißer Verkauf Ps Platte Entwicklung Entwicklung Produkte zum besten Preis auf Alibaba.com This was compared to an identical plate processed with a 6 minute washout in a mixture of 75% (by volume) perchloroethylene--25% (by volume) n-butyl alcohol without the water rinse. Jet Photopolymer Plate Maker ** Runs on 240v power ** This is a complete photopolymer plate maker, developing water based photopolymer plates for printing. It has a vacuum IR exposure, wash out / developing unit with heated water reservoir and a post developing dryer compartment. This permits clear, sharp images to be formed at much lower exposure times than those used when conventional solvents are employed, since swelling tends to distort the image formed. Photopolymer plates based on a terpolymer of butadiene, acrylonitrile and acrylic acid were processed as in Example 1 with this solvent. Achieve superb results that hitherto were only achievable in offset or gravure. DuPont introduced the first solid flexo photopolymer plate under the trade name Cyrel in 1974. Gently wipe the entire plate with a sponge. Success of photopolymer plates revolutionized flexographic printing. This invention presents terpene-based solvents suitable for use in the processing of a wide variety of photopolymer printing plates. After rinsing the plate was placed in a forced air drying oven at 150° F. for 1 hour. This permits formation of an aqueous mixture that retains all of the processing advantages of the pure terpene solvent. Dry film photoresists are supplied as a sandwich of a photopolymer layer between a polyethylene film and a polyester film. Because of this nontacky condition it was easy to remove the precipitated photopolymer from the solvent mixture. 0430233 - EP90122838B1 - EPO Application Nov 29, 1990 - Publication Apr 22, 1998 Katsumasa Yamamoto Kyoichi Mizuno Kosaku Onodera Keizo Kawahara Masaru Nanpei. The following was added to a clean Flex-Light® 30"×30 40" plate processor and recirculated for 10 minutes: 28 liters of 25% (by weight) aqueous potassium toluene sulfonate, 64 liters of d-limonene (4-isopropenyl-1-methylcylohexene), 5 Kg OT-100 (Dioctyl sodium sulfosuccinate). The exposure steps were 4, 6, 8 and 10 minutes. Because of this exposures equivalent to those required for perchloroethylenebutanol mixture processing, were necessary to hold 0.004" lines and 3%, 150 line half tones. Photopolymer film on aluminium plates. 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. Flexography India Press is a manufacturer of Flexography Photopolymer Plate making Equipment. Alibaba.com offers 1,464 photopolymer plate maker products. 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 … Expose to UV Developing Tyobo KM Photopolymer Plates Km Photopolymer plates are developed in luke warm tap water. Photopolymer plates based on a block copolymer of styrene and isoprene were processed as in Example 1, using both this solvent and the perchloroethylene-butanol mixture as a control. Photopolymer jetting (commonly known as PolyJet technology) developed by Israel-based company “Objet Geometries Ltd.,” was later merged with “Stratasys” (a well-known leading manufacturer of 3D printers) in 2012. It is important to follow all the points or use equally effective measures. Thus, there exists real need for solvent systems which can be used with a higher degree of safety. Again the plate quality was superior to that obtained with perchloroethylene under equivalent conditions. 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. They are quick and simple to make and easy to use; offering superior ink transfer with lower ink consumption and long, consistent press runs. When this procedure was repeated with the perchloroethylene - n-butanol mixture it was not possible to terminate the distillation on the basis of temperature because perchloroethylene and n-butanol have similar boiling points. An additional feature of the terpene-based solvents is the ability of terpenes to form emulsions with water. Remove the protec ve cover sheet from photopolymer plates 3. These compositions can be utilized to produce printing plates which can be developed by an array of aliphatic and aromatic solvents including methyl ethyl ketone, toluene, xylene, carbon tetrachloride, trichlorethane, methyl chloroform, and tetrachloroethylene. In fact, this property can be an aqueous emulsion to permit a water rinsable.... Both plates had image relief of 30 to 35 mils had image relief of 30 to 35 mils driver has... Paper or film ) is transferred to the bottom of the terpene-based solvents for... / developing unit with heated water reservoir and a polyester film from a variety photopolymer... Different types of photopolymer plates ; Laser after such treatment, plate quality was equivalent to that obtained with at! And non-solvent can be manoeuvred out under the trade name Cyrel in 1974,. Much higher exposure time solution for four minutes plate in this wash solution after the plate was... 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