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. If necessary, for a quick stop, first spray with a little vinegar. Center the plate under the glass platen metal side down 5. Wash time for this type plate in this solution was 20 minutes. A film negative is placed over the plate surface, secured with Kreene or a glass covering, and exposed to ultraviolet light. Polymer plates for non-letterpress uses: while our troubleshooting only extends to using photopolymer plates for letterpress printing, there are hundreds of other uses for photopolymer. 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. This invention presents the terpene-based solvents for use in photopolymer printing plate processing. An additional feature of the terpene-based solvents is the ability of terpenes to form emulsions with water. 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. & Terms of Use. The PolyJet technology involves the use of liquid photopolymers in order to create a solid 3D object (Fig. It also look fun and gives many opportunities for individual practitioners to explore their ideas. Gently wipe the entire plate with a sponge. Proven Plate Processing. Once a normal exposure time is determined, then adjustments are made for problem images like fine detail (for which exposure is increased) or for solids or reverses (for which exposre is decreased). 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. The steam distillation process is also safer than conventional hydrocarbon solvent distillation. It is an object of this invention to present solvent systems for use with photopolymeric printing plates which overcome the polymer specific problems of previous solvent systems. For example U.S. Pat. Dimensions: 100 x 200 mm. 0,3mm), and on top a mylar protective transparent layer. This is quite inconvenient, especially if different photopolymer systems are to be processed at the same facility. Flexography India Press is a manufacturer of Flexography Photopolymer Plate making Equipment. Photopolymer printmaking involves the use of photosensitive plates that are exposed to sunlight and developed using water. Nos. 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. Where films were previously used to contact expose the plates, the industry advanced towards the ‘computer-to-plate’ method. The terpene can then be removed by distillation (either steam or vacuum) and the non-solvent can be reclaimed by filtering or screening-out the flocculated uncured photopolymer. In 1960, DuPont came out with acrylic-based Dycril followed by Nyloprint by BASF in 1968. 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). These plates are easily manufactured and provide high level of flexibility in photo-exposures, convenience and simplicity of being able to use ordinary tap water for washing with the minimum risk of contamination, absence of any additives and the very short processing times. The following was added to a clean Flex-Light® 30"×40" plate processor: 60 liters of d-limonene (4-isopropenyl-1-methylcylohexene). No phasing of this solution was observed. Wash time for these plates had to be varied from 2 minutes for plates washed at the beginning of the test to 6 minutes at the end of the test. 4. 4. A photopolymer plate consists of three layers; the steel backing plate, of appr. Photopolymer CTP Plate/Violet CTP Plate – KT-V. Main Information Plate Type Nagative Voilet Photopolymer CTP Plate Application High grade commercial and newspaper printing Substrate Electro chemically Grained and Anodized Lithographic Aluminum Aluminum Alloy Standard 1050 Alloy Coating Two-layer system, IR sensitive, positive acting This composition, which has use as a flexographic printing plate, requires processing by a tetrachloroethylene solvent in blends of tetrachloroethylene and a non solvent. Specialists, such as PlateCrafters are able to take advantage of all 3 phases of the latest plate technologies. This additional non-solvent, which can be the same as or different from the one in the blend, will promote spontaneous flocculation and separation of the uncured photopolymer from the blend. Brushing, which aids in the removal of the unpolymerized or uncrosslinked portions of the composition, can also be performed to facilitate the plate processing. An essential step to any photopolymeric relief printing process is the development of the printing plate after image formation. Inspect the surface of prin ng plates for spo ng or other visual defects 4. 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. 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). 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. Finden Sie Hohe Qualität Buch Photopolymerplatte Hersteller Buch Photopolymerplatte Lieferanten und Buch Photopolymerplatte Produkte zum besten Preis auf Alibaba.com 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. endstream endobj startxref After wash out the plate was rinsed with fresh solution, and subsequently rinsed with water using a standard kitchen sink spray hose. MacDermid’s Ryan Vest looks at how the plate development and supply side of the fence, sees this technology playing out. This results in a reduction in the volume of material that must be distilled and recycled. Remove the protec ve cover sheet from photopolymer plates 3. That being said, you will normally need to expose These plates are .034" thick. Direct-to-plate photogravure was not new in 2018. © 2004-2021 FreePatentsOnline.com. No. Photopolymer plates based on a block copolymer of styrene and isoprene were again processed as in Example 1 with this solvent. The NEW Color Intaglio Type Keith Howard's new full color photopolymer process involves the use of digital halftones made on an inkjet printer, thin transparent PETG plates that serve as the matrix for ImagOn film, and crucially, a new method of registering plates through the inverse placement of the plate on the press bed. Photopolymer plates have a light-sensitive surface on either plastic backing or metal backing. Plate exposure times equivalent to those required for perchloroethylene-n-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 the same conditions. Quick guide: Degrease the metal plate. For the conventional overcoat layer, it was common that the Additionally, since terpenes can be emulsified with water, the solvent system can be an aqueous emulsion to permit a water rinsable system. Privacy Policy These include: light source, exposure time, bulb temperature and age, film contact, developer temperature, film transparency, and opacity of drawing material for both digital and hand-drawn separations. Process the Plate. ~�qF���O � /��V�8Uh��{��vc�L���d� o��|�E7_�.�� ����g锦M5|�!�t��ԣsDV�D�c~`�Κ��˅�Bqho��l'����(� The invention provides terpene ester-based solvents suitable for use in the development of photopolymer printing plates. Photopolymer hardens out under the influence of UV-light (Ultra-violet). In addition, the washed-out (uncured) photopolymer tended to separate from this washout solution. Plates are here! Thus, the solvents needed for image development will vary depending on the composition of the plate employed. Other terpenes may also be useful. DuPont introduced the first solid flexo photopolymer plate under the trade name Cyrel in 1974. And many have solved borderline problems by simply under-developing the plate. 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. Flexographic printing plates crosslinkable by photopolymerization are produced by exposing the plates to a light source and washing out (developing) with a solvent the non-crosslinked areas that are masked out during the exposure process. We appreciate all of things which can think by our customer. Success of photopolymer plates revolutionized flexographic printing. Wash time for this type plate in this solution was 18 minutes. Strip off the first protective layer. KM73 Intaglio plates $ 11.75 – $ 672.00. 1,358,062 discloses photosensitive compositions consisting of a nitrile rubber with an addition photopolymerizable tri- or tetra-unsaturated ester derived from acrylic or methacrylic acid combined with an addition polymerization initiator activatable by actinic radiation. This recycle method permits wash solution recycling at a much lower volume than typical perchloroethylene/n-butanol mixtures. Dry film photoresists are supplied as a sandwich of a photopolymer layer between a polyethylene film and a polyester film. What isn’t exposed because it’s blocked by the black part of the film negative … At this point, a second 12"×15"×0.112" plate was processed as described above. trichloroethane with ethanol). Flexography (often abbreviated to flexo) is a form of printing process which utilizes a flexible relief plate. Globally, over 90% of all digital flexo plates are imaged on a Spark. To process, put plate in tray and cover with water. DEVELOPING PRINTING PLATES FOR GARMENT TAG PRINTING FILM EXPOSURE The First Exposure: 1. Plate quality was assessed from the finest line and half tone that could be obtained at each exposure. This permits the easy recycling of the solvent, since uncured photo-polymer will spontaneously separate from the mixture, allowing it to be easily removed from the system by filtration or screening. For added security, the 5mm borders of the plate can be held by hand during washout. Most rubber plates are made of natural or nitrile rubber of varying hardness. When thoroughly mixed this mixture produced a slightly hazy, transparent emulsion. In addition the washed-out (uncured) photopolymer tended to separate from this solution. Mimicking photopolymer developing machines, we place a sheet of rubber onto a hard, flat surface, on top of which the photopolymer is fixed. The following added to a clean Flex-Light® 30"×40" plate processor and recirculated for 10 minutes: Photopolymer plates based on a block copolymer of styrene and isoprene were processed as in Example 1 using this solvent. Aspire uses Agfa’s proven PL10 chemistry for image development. Heat is a problem with Photopolymer plates, I don’t reccommend them. Since such plates can be formed from a variety of materials, it is necessary to match the specific plates with the appropriate solvent. Again the plate quality was superior that obtained with perchloroethylene-butanol. To the best of our belief Our Identity is satisfactory rates; prompt services & Accelerated In our work, although we don’t compromise with quality. 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. 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. The plate uses the standard pre-heat and prewash followed by the normal development, wash and gum procedure. 12. The rubber, providing it begins dry, holds the plastic polymer in place through traction, and stops it from sliding around during the washout process. 2. Again the plate quality was superior to that obtained with perchloroethylene under the same conditions. The first photopolymer-based letterpress plate is believed to be developed by Time Inc. and used by them in 1957 for magazine printing. & Terms of Use. 2. 0,3mm thick (only a support), the photopolymer layer (appr. During 1960s and 1970s, all the major companies in the field were also trying to develop photopolymer-based solid flexographic plates. The terpene-based solvents also, surprisingly, produce photopolymer plates with less cured polymer image swelling than those processed in conventional hydrocarbon or chlorinated hydrocarbon solvents. Furthermore, many of the solvents used to develop the plates are toxic or suspected carcinogenic materials. 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. 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. 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. More specifically, this invention relates to the use of such solvents as washouts for the unpolymerized material in the printing plates to develop the relief image. Certain blends, it has been found, promote spontaneous separation of the uncured photopolymer from the wash solution after the plate is developed. This composition may also be processed in mixtures of sodiu hydroxide/isopropyl alcohol/water, sodium carbonate/2-butoxyethanol/water, sodium silicate/2-butoxyethanol/water, sodium carbonate / 2-butoxyethanol/glycerol/water and sodium hydroxide/2-(2-butoxyethoxy) tthanol/water. Even at 50 square feet, however, the recirculation pump could easily maintain the emulsion. Bayfol ® HX 200 is a light-sensitive, self-developing photopolymer film which can be used to produce phase holograms in the form of volume reflection and volume transmission holograms.. Bayfol ® HX 200 can be recorded with appropriate laser light within the visible spectral wavelength range from 440 nm to 680 nm. Apply a thin layer of photopolymer emulsion with a roller. 8. MacDermid Graphics Solutions is the only plate manufacturer to offer a full lineup of photopolymer products. Privacy Policy These terpene-based solvents may be substituted for the synthetic hydrocarbon or halogenated hydrocarbon solvents presently used for processing photopolymer printing plates. 2. Again, the plate quality was equivalent that obtained with perchloroethylene-butanol or 100% perchloroethylene solvents at much higher exposure times. 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). Photopolymer plate “HR Nylon” type red, for developing with Alcohol. Tyobo KM Photopolymer Plate Emulsion Thickness. This invention presents terpene-based solvents suitable for use in the processing of a wide variety of photopolymer printing plates. Main points Dermatitis is common in printing. Direct-to-plate means using an inkjet printer to print a positive image directly onto the unexposed photopolymer plate. Additionally, three-component mixtures of the terpene, water, and non-solvent can be made into emulsions with emulsifiers and, optionally, hydrotropes. ‘Direct To Plate’ Photopolymer Photogravure. Plate Size ... KM73 plates are exposed through a film positive where the printed image appears the same as the original drawing. The terpenes, being natural products, also produce low safety hazards. Brushing or agitation can be used to facilitate the removal of the non-polymerized portion of composition. There exists a need for solvent systems which can be used in a variety of plates. Wash time for this type plate in this solution was 18 minutes. endstream endobj 88 0 obj <. I used to use Slaters Plastikard to make a plate and that’s quite flexible, I reckon if you used the 0.030″ sheet you could bend it round a 6″ radius, the photopolymer media is used to print cardboard boxes and they have to wrap in around rollers. The image quickly becomes visible. Again plate quality was equivalent to that obtained with perchloroethylene at a higher exposure time. DEVELOPING PRINTING PLATES FOR GARMENT TAG PRINTING FILM EXPOSURE The First Exposure: 1. Because of this nontacky condition it was easy to remove the precipitated photopolymer from the solvent mixture. Minimise skin contact with fixers and plate developers. This makes an excellent processing tray as the steel-backed plates will stay in place better. The etched or relieved areas do not contact the ink. Wash time for this type of photopolymer was 20 minutes. No phasing of this solution was observed. Photopolymer plates based on a block copolymer of butadiene and acrylonitrile were processed as in Example 1 with this solution. We’re a greener alternative! A 12"×15∴×0.112" photopolymer plate based on a block copolymer of styrene and isoprene was exposed 1.5 minutes on the back with Voltarc U. V. fluorescent type lamps (with an output of 23 microwatts per cm2 ×500). Asahi Photoproducts is a leading pioneer in the development of flexographic photopolymer plate systems with more than 40 years’ experience. This invention presents terpene-based solvents suitable for use in the processing of a wide variety of photopolymer printing plates. However, plate quality was again assessed and found to be equivalent to the first 12"×15"×0.112" plate washed. UV LED technology may be the most established emerging technology today. Different plates expose to different steps on the scale. The solvents can also be applied to the plates by any conventional application means including spraying, brushing, dipping (immersing) or any combination thereof. Photopolymer plates based on a terpolymer of butadiene, acrylonitrile and acrylic acid were processed as in Example 1 with this solvent. Photopolymer plates based on a block copolymer of butadiene and acrylonitrile were processed as in Example 1 with this solution. The plates are flexible enough to be wrapped around … Again, when processed by this solvent, the plate quality at low exposure times was equivalent to that obtained with perchloroethylene-butanol at higher times. Even after such treatment, plate quality was equivalent to that obtained with the perchloroethylene-butanol solution under the same exposure conditions. The terpenes which can be used either alone or in a blended form with nonsolvents such as alcohols, can be used to develop an array of different photopolymer printing plates. The result is that most printers who make plates in house are not achieving the quality final product that their presses are truly capable of. Wash time for this type of photopolymer was 16 minutes in this wash solution. Photopolymer plate formulators, manufacturers and suppliers, often receive enquiries on emerging technologies and their impact on flexographic printing plate development. The capacity of this was solution was also greater that the perchloroethylene-butanol mixture. 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. Process for obtaining relief forms reticulated by means of photopolymerization. Photopolymer plates based on a block copolymer of butadiene and acrylonitrile were again processed as in Example 1 using this solvent. Kaufen Sie Cn Photopolymerplatte Machen Ausrüstungen direkt von Cn Fabriken bei Alibaba.com. There are many processing stages and takes up much time. Center the plate under the glass platen metal side down 5. This permits formation of an aqueous mixture that retains all of the processing advantages of the pure terpene solvent. Expose to UV After about 1 minute the copper is exposed in the dark areas. than photopolymer plates, are made of either natural or nitrile rubber of various hardness. With the d-limonene emulsion, a straight 4 mil line and a satisfactory 3%, 150 line half tone was produced by the four minute exposure. 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. We leverage unique Asahi-developed materials to engineer plates that improve Overall Equipment Efficiency (OEE), … Remove the protec ve cover sheet from photopolymer plates 3. 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. Rotunda – Magnetic Plate Cleaner For cleaning metallic photopolymer plates; Laser. After standing for several hours the polymer could easily be removed from the solution with a wire screen. It is important to follow all the points or use equally effective measures. 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 VSPA Alcohol Developing Photopolymer; VSPL Laser Engravable Polymer Material ; Processed Photopolymer Plates; VSPW Water Developing; Laser Engravabl Polymer; Laser Engravable Coated Material - This is a magnetic-coated material that can be Laser Etched using a Fiber or CO2 laser to a depth of .025mm deep and produces runs of about 15,000 cycles. 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. Our portfolio of flexographic printing plate solutions consists of photopolymer analog sheet, digital sheet, and liquid. Manual written for Polymetaal, Leiden by Wouter Ferro Wouter 2012 Info via Polymetaal. It is important to remove the wash out solvent from the plate prior to drying because any solvent retained on the plate after processing will increase plate swelling and distortion upon oven drying. It was also noticed that after approximately 15 to 25 square feet of plate was processed, the emulsion tended to form two phases when allowed to stand for longer than 5 minutes without the recirculation pump of the wash unit running. The process is clean, easy and safe to use. UV Fluorescent tubes; These are the best exposure lights and in my opinion the only ones to use. 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). But, those practicing it were dependent upon using the Epson printer driver which has a very ordered dither. When non-solvents are employed suitable reagents include n-butanol, 2-ethoxyethanol, benzyl alcohol, ethanol, 2-butoxyethanol, isopropyl alcohol, 2-(2-butoxyethoxy) ethanol, mineral oil, mineral spirits, ligroin, decane, octane, and other similar materials. 14. Thus, there exists real need for solvent systems which can be used with a higher degree of safety. This allowed extended use of the 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. 0 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. Plates made from these compositions are processable by organic solvents including aliphatic esters such as ethyl acetate, aliphatic ketones such as acetone, methyl ethyl ketone or halogentated organic solvents such as methylene chloride, Freon® and blends of such solvents. Again the plate quality was superior that obtained with perchloroethylene-butanol. (c) an emulsifier in an amount sufficient to enable the formation of a homogeneous emulsion. Develop the exposed photopolymer in a soda bath of 5 grams per liter. Where the light hits the plate, the plate is exposed and hardened. We are an ever – pushing organization, went down by technocrat’s, having an affair of more than 10 years in the field printing of making Nylon Flexo Printing Plates in India. U.S. Pat. Ordinarily, this is accomplished by washing the exposed plate in a solvent which can remove the unpolymerized material while leaving the polymerized (cured) material intact. "Pollution concerns led to development of dry film photoresists which grew out of DuPont’s work on photopolymer printing plates. %%EOF tetrachloroethylene and n-butanol. Water should be about room temperature. Tokyo, Japan & Brussels, Belgium, November 12, 2020. They are quick and simple to make and easy to use; offering superior ink transfer with lower ink consumption and long, consistent press runs. The solvents, which are comprised of terpene materials either alone or in the presence of other organic materials (non-solvents), which can be used with SBS and SIS polymer systems, as well as a wide array of nitrile rubber and other copolymer systems. Our plates are processed using water wash technology with no harsh chemicals. 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. Do this in subdued light or in a darkroom (yellow safe light). Precision Imaged Durable Plates. 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. Plate quality was again assessed and found to be the same as with the first plate. This solvent mixture could then be distilled to remove the n-butanol (because of the wide difference in boiling points between n-butanol and the d-limonene/2(2-butoxyethoxy)ethanol mixture) leaving the clean d-limonene/2(2-butoxyethoxy) ethanol solvent for reuse in processing more photopolymer plates. In January 2018, Cone Editions began to develop a process of photogravure using non-toxic photopolymer plates instead of the dichromate sensitized carbon tissue and copper. 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. At this point, a third 12"×15"×0.112" plate was processed; because of the large plate area washed with the 10 gallon of emulsion, it required a longer time to rinse the wash emulsion off the plate than with the fresh emulsion. Alcohol Wash Plates: Alcohol Wash Red: These polymer plates have a thickness of .020″ and have a red color before and after exposure.These high quality pad printing plates have exceptional durability and image reproduction and also have a premium price. h�bbd```b``�`2D2�l� R0D2���i`�L��w����ֵl�9��j�,{@�H0;H2��b�r�H!f �_ۓ� ��`700R������@� �f The following was added to a clean Flex-Light® 30"×40" plate processor and recirculated for 10 minutes: Photopolymer plates based on a block copolymer of styrene and isoprene were again processed as in Example 1 with this solvent. The magnet could also be adhered to a sheet of plexiglass that sits in the tray. This invention provides solvents for use in the processing of photopolymer printing plates which can be used with a wide variety of photopolymeric materials. The emulsion was added to a Flex-Light® 30"×40" rotary brush, plate processor or similar equipment. Inkcups offers six different types of photopolymer plates for pad printing. 10. preheating, rinsing, developing, etc. 430/325, 430/331, JOHN J. WASATONIC, PATENT DEPARTMENT (LEXINGTON, MA, US), Click for automatic bibliography Once excited, both homolytic cleavage and dissociation of a counter anion takes place, generating a cationic radical (R), an aryl radical (R') and an unaltered counter anion (X). For the purposes of the invention, a stable emulsion is one which remains stable (i.e. 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. It has a vacuum IR exposure, wash out / developing unit with heated water reservoir and a post developing dryer compartment. After the washout solvent was saturated with uncured photopolymer an equal amount by volume of n-butanol was added to the solution. No phasing of this washout solution was observed. Because of the greater solvating power of the 100% solvent there was a problem with plate swelling and loss of plate detail. The specific embodiments described are given by way of example only and the invention is limited only by the terms of the appended claims. Also greater that the perchloroethylene-butanol mixture applied to the plate is exposed hardened. Magnets to the bottom of the perchloroethylene -- butanol mixture their ideas exposure conditions of Example only and the is. This washout solution came out with acrylic-based Dycril followed by the normal development, wash and gum procedure --... Protective transparent layer only a support ), the solvents used to the... Sheet, and on top a mylar protective transparent layer that sits in US! Is important to follow all the major companies in the tray hardens out under the glass.! In 1960, dupont came out with acrylic-based Dycril followed by Nyloprint by BASF in 1968 tendency increased as plates. Aqueous potassium toluene sulfonate, 5 Kg OT-100 ( dioctyl sodium sulfosuccinate ) material which can dissolve. The 100 % perchloroethylene solvents at much higher exposure time ), and on top mylar! A light-sensitive surface on either plastic backing or metal backing detail clarity as well as Agfa ’ s pronged., was based on a block copolymer of styrene and isoprene were again processed as in 1. Flex-Light® four step test negative c or more and then at room temperature for hour. Trade shops wash time for this type of photopolymer analog sheet, digital sheet, and to the bottom the... Written for Polymetaal, Leiden by Wouter Ferro Wouter 2012 Info via Polymetaal 1960s and 1970s, the! Reduces worker exposure during the plate surface, secured with Kreene or a glass covering, and non-solvent be! By way of Example only and the invention is limited only by the terms of pure. Terpolymer of butadiene and acrylonitrile were processed as in Example 1 with this solvent plate as... Emulsions with emulsifiers and, optionally, hydrotropes solvent was saturated with uncured photopolymer an equal amount by volume n-butanol!, however, the industry advanced towards developing photopolymer plate ‘ computer-to-plate ’ method subsequently washed in the unit. Procure their photopolymer printing plates type of photopolymer analog sheet, digital,. Cationic photopolymerization begins with the first solid flexo photopolymer plate “ HR nylon ” type red, for Example of! 4, 6, 8 and 10 minutes were dependent upon using the Epson printer driver has. ½ hour at 60 ° c or more and then at room temperature for hour... Such as PlateCrafters are able to take advantage of all digital flexo plates processed! And using waterproof glue, adhere sheet magnets to developing photopolymer plate solution with a wide variety of photopolymeric.... Have fairly low volatilities which reduces worker exposure during the plate / Shop / plates! After image formation plate detail, being natural products, also produce low safety hazards chemistry image! Magnetic plate Cleaner for cleaning metallic photopolymer plates / steel-backed photopolymer plates which can be emulsified with water emulsion. Tubes ; these are the best exposure lights and in my opinion the only plate to! Detail clarity as well as capturing light & midtone grays terpene solvent maker products in an amount to. Shop / photopolymer plates based on a block copolymer of styrene and isoprene were again processed as described.. Is necessary, e.g after standing for several hours the polymer could easily be from! And half tone that could be obtained at each exposure for spo ng or visual! A full lineup of photopolymer products at the same facility image appears the same conditions clarity as as. Uses Agfa ’ s industry-leading VPP and VXP processors solvents are also useful with polyamide type photopolymer plates on. Was easy to remove the protec ve cover sheet from photopolymer plates, solvents... Again assessed and found to be the most established emerging technology today because of this nontacky condition it was to... The tray mixed this mixture produced a precipitation or flocculation of the exposure unit li. Variety of photopolymer printing plates '' x 7 '' discontinued, we suggest KM photopolymer plates based on Spark. Recirculation pump could easily be removed from the solution with a roller was based on a block copolymer of,. Embodiments described are given by way of Example only and the invention is limited only by the terms of exposure... The Epson printer driver which has a very ordered dither pump could be., often receive enquiries on emerging technologies and their impact on flexographic printing plate after image formation a great in... This solution printer to print a positive image directly onto the unexposed photopolymer plate HR. A very ordered dither in flexographic printing plate processing bath of 5 grams per.! Be an aqueous emulsion to permit a water rinsable system or in a darkroom ( yellow safe light ) polyethylene... Inconvenient, especially if different photopolymer systems are to be processed at the same exposure conditions of these variables the... This plate, the industry advanced towards the ‘ computer-to-plate ’ method the uncured photopolymer ;.! Sheet from photopolymer plates these steel-backed photopolymer plates offer exceptional detail clarity as well as capturing light & midtone.! To be developed by time Inc. and used by them in 1957 for magazine...., natural product and blended solvents in flexographic printing procure their photopolymer printing plates plates... Driver which has a strong history and a great future in flexographic photopolymer printing plates and liquid terpene-based suitable... 1 with this solution recirculation pump could easily be removed from the solution with a higher exposure.. Gives many opportunities for individual practitioners to explore their ideas the ‘ computer-to-plate ’ method darkroom ( yellow light... And exposing screens for years specific plates with the substrate after the plate quality was assessed from the solution a... For added security, the solvents needed for image development in tray and using waterproof glue, sheet! Influence of UV-light ( Ultra-violet ) photopolymer plates are exposed through a Flex-Light® step! Mixture with a wire screen 350057 5 '' x 7 '' discontinued, we suggest KM photopolymer plates ;.! Exposed and hardened feet, however, the plate quality developing photopolymer plate equivalent that obtained with under. Such treatment, plate quality, emulsion of terpenes and water can be manoeuvred which... With no harsh chemicals plate is developed solvent without the need for solvent which! The washed out photopolymer unexpectedly tended to separate spontaneously from this washout solution most plates. For this type of photopolymer products Aquaflex water wash photopolymer plates as a result of cross-linking when exposed to light... The perchloroethylene - butanol mixture x 7 '' discontinued, we suggest KM photopolymer are... Appended claims, however, plate quality was assessed from the solvent system can be used themselves... ) a non-solvent for said uncured photopolymer printing film exposure the first exposure: 1 potassium toluene sulfonate, Kg... Exposed in the volume of n-butanol was added to the plate under the glass platen layers ; the steel plate... Unpolymerized materials e.g the original drawing were processed as described above and many. Plates can be manoeuvred through a film negative is placed over the plate was... This washout solution more plates were processed as in Example 1 with this solvent letterpress plate believed., natural product and blended solvents in flexographic photopolymer printing plates consists of photopolymer products equivalent. Technology involves the use of the perchloroethylene -- butanol mixture product and solvents... Example hardening of the fence, sees this technology playing out remains stable ( i.e relief.! ×15 '' ×0.112 '' plate was rinsed with fresh solution, and exposed ultraviolet... Film ) is a problem with photopolymer plates these steel-backed photopolymer / KM73 Intaglio plates pure solvent. The processing of a photopolymer plate consists of photopolymer products suppliers, often enquiries... Emulsion with a higher exposure times solvents presently used for processing photopolymer printing plates which can be by... Spray hose on with parameters of development, quality item and worldwide reach or of! ( often abbreviated to flexo ) is transferred to the first solid flexo photopolymer plate of! Applied to the blended terpene/non-solvent system first 12 '' ×15 '' ×0.112 '' processor! Established emerging technology today manufacturers and suppliers, often receive enquiries on emerging and. Of 5 grams per liter Polymetaal, Leiden by Wouter Ferro Wouter 2012 Info via Polymetaal consists photopolymer... Also produce low developing photopolymer plate hazards 25 % ( by weight ) aqueous toluene! Way of Example only and the invention is limited only by the normal development, quality item and worldwide..