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Ideal for the pad-printing machine K-1. Privacy Policy Originally, flexo plates were made from rubber, but are today made from photopolymer material in sheet form – which differentiates them from the fixed metallic printing plates of offset printing. © 2004-2021 FreePatentsOnline.com. Harden for ½ hour at 60 ° C or more and then at room temperature for 1 hour. A terpene-based aqueous solvent solution was prepared in a two-step process by mixing with an air mixer in a 15 gallon container the following: 2.27 kilograms of Sodium Dioctyl Sulfosuccinate, 39.3 liters of d-Limonene (4-isopropenyl-1-methylcylohexene), Total volume solution was approximately 10 gallons (39 liters). Water should be about room temperature. USE OF PURE LIMONENE ON TERPOLYMER PLATES. KM73 Intaglio plates $ 11.75 – $ 672.00. After standing for several hours the polymer could easily be removed from the solution with a wire screen. 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. (d) an emulsifier in an amount effective to enable the formation of a homogeneous emulsion; said solvent being applied in an amount sufficient to remove substantially all of the uncured photopolymer from said plate during the exposure of said plate to said solvent, thereby forming a solvent mixture containing said uncured photopolymer, permitting the mixture to stand for a time sufficient to permit the uncured photopolymer to flocculate and separate from the mixture, and removing the flocculated uncured photopolymer from the mixture by filtration or screening. Again plate quality was equivalent to that obtained with perchloroethylene at a higher exposure time. nyloprint Photopolymer Printing Plates, US $ 40 - 45 / Square Meter, Flexo Printing, Nylon Resin, POSITIVE.Source from Fujian Huaxing New Material Technology Co., Ltd. on Alibaba.com. No phasing occurred with this solvent mixture. Privacy Policy Alibaba.com offers 1,464 photopolymer plate maker products. Halogen desk lamp (50 watt); Long (and hot) exposure, the light I've used takes 7 minutes and gets very warm in that time. 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. There are many variables in producing a quality photopolymer plate. Photopolymer plates have a light-sensitive surface on either plastic backing or metal backing. A film negative is placed over the plate surface, secured with Kreene or a glass covering, and exposed to ultraviolet light. 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. 0,3mm thick (only a support), the photopolymer layer (appr. Gently wipe the entire plate with a sponge. This permits formation of an aqueous mixture that retains all of the processing advantages of the pure terpene solvent. 4,177,074 discloses a photosensitive composition containing a high molecular weight butadiene/acrylonitrile copolymer which contains carboxyl groups, a low molecular weight butadiene polymer which may or may not contain carboxyl groups, and an ethylenically unsaturated monomer, combined with a free-radical generating system. An essential step to any photopolymeric relief printing process is the development of the printing plate after image formation. 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. Expose to UV 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. DEVELOPING PRINTING PLATES FOR GARMENT TAG PRINTING FILM EXPOSURE The First Exposure: 1. There are many processing stages and takes up much time. These terpene-based solvents may be substituted for the synthetic hydrocarbon or halogenated hydrocarbon solvents presently used for processing photopolymer printing plates. Main points Dermatitis is common in printing. Apply a thin layer of photopolymer emulsion with a roller. U.S. Pat. An additional feature of the terpene-based solvents is the ability of terpenes to form emulsions with water. It also look fun and gives many opportunities for individual practitioners to explore their ideas. Such solvents, it has been discovered provide a unique combination of reduced cost, improved plate quality, low volatility, low toxicity and biodegradability. 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. 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). Aspire is compatible with all major photopolymer plate processors as well as Agfa’s industry-leading VPP and VXP processors. trichloroethane with ethanol). That being said, you will normally need to expose The sketch of CTP photopolymer plate Laser exposure Pre-washing Development Violet Photopolymer CTP Plate. The capacity of this was solution was also greater that the perchloroethylene-butanol mixture. The plate surface is the only area that comes into contact with the substrate after the ink is applied to the plate. Achieve superb results that hitherto were only achievable in offset or gravure. For example, the terpene class solvents are excellent for processing photopolymer printing plates based on block copolymers of styrene and butadiene (SBS) or styrene and isoprene (SIS), copolymers of butadiene and acrylonitrile, polyamides, terpolymers of butadiene, acrylonitrile and acrylic acid and other similar photopolymers. 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 makes an excellent processing tray as the steel-backed plates will stay in place better. The plate was then exposed through a Flex-Light® four step test negative. 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. 0430233 - EP90122838B1 - EPO Application Nov 29, 1990 - Publication Apr 22, 1998 Katsumasa Yamamoto Kyoichi Mizuno Kosaku Onodera Keizo Kawahara Masaru Nanpei. Remove the protec ve cover sheet from photopolymer plates 3. 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. y�˹�[��͙>7.���� For example U.S. Pat. 124 0 obj <>stream 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. Minimise skin contact with fixers and plate developers. The process is clean, easy and safe to use. Torelief and Aquaflex water wash photopolymer plates are produced in a wide variety of types and sizes, and to the highest standards. 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. 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). 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. MacDermid’s Ryan Vest looks at how the plate development and supply side of the fence, sees this technology playing out. 4. This is caused by frequent contact with chemicals used in printing processes. Water rinsing is not practical when conventional hydrocarbon or chlorinated hydrocarbon solvents are used because of the rinse water will become contaminated with the toxic synthetic solvent; additionally, such solvents are also are insoluble in water. To the best of our belief Our Identity is satisfactory rates; prompt services & Accelerated In our work, although we don’t compromise with quality. The emulsion was added to a Flex-Light® 30"×40" rotary brush, plate processor or similar equipment. 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. After removing this layer, the film lies flat. endstream endobj 88 0 obj <. Most rubber plates are made of natural or nitrile rubber of varying hardness. Again the plate quality was equivalent that obtained with perchloroethylene at a higher exposure time. It is a freestanding unit with wheels so can be manoeuvred. Again, the plate quality was equivalent that obtained with perchloroethylene-butanol or 100% perchloroethylene solvents at much higher exposure times. Home / Shop / Photopolymer Plates / Steel-backed Photopolymer / KM73 Intaglio plates. This photosensitive film has to be laminated to a plate. No phasing of this washout solution was observed. 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. ��"ki@����:�5/��޸@�Sظ{�'9�}ӱY�M�Ն8�����H�k� 2. Success of photopolymer plates revolutionized flexographic printing. Quick guide: Degrease the metal plate. We appreciate all of things which can think by our customer. Furthermore, many of the solvents used to develop the plates are toxic or suspected carcinogenic materials. Dry film photoresists are supplied as a sandwich of a photopolymer layer between a polyethylene film and a polyester film. Wash time for this type of photopolymer was 20 minutes. Removal of the emulsified wash solvent from the plate by water-rinsing in the present invention prior to oven drying gives reduced swelling and improved plate quality over conventional wash solvents. 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. Solarplate Printmaking Plates . Manual written for Polymetaal, Leiden by Wouter Ferro Wouter 2012 Info via Polymetaal. Mimicking photopolymer developing machines, we place a sheet of rubber onto a hard, flat surface, on top of which the photopolymer is fixed. 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. These solvents may be used by themselves or in a mixture with a "non-solvent" (i.e. 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 Process for obtaining relief forms reticulated by means of photopolymerization. But, those practicing it were dependent upon using the Epson printer driver which has a very ordered dither. This invention presents terpene-based solvents suitable for use in the processing of a wide variety of photopolymer printing plates. These changes are often manifested structurally, for example hardening of the material occurs as a result of cross-linking when exposed to light. 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. Plates are here! The film has a natural curl – work with the film curl side uppermost. Nos. 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). 28 liters 25% (by weight) aqueous potassium toluene sulfonate, 5 Kg OT-100 (dioctyl sodium sulfosuccinate). 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). The proposed mechanism for cationic photopolymerization begins with the photoexcitation of the initiator. All rights reserved. The precipitate was very firm and nontacky. The total processing capacity of this solution was also greater than that of the perchloroethylene - butanol mixture. preheating, rinsing, developing, etc. Both plates had image relief of 30 to 35 mils. This is quite inconvenient, especially if different photopolymer systems are to be processed at the same facility. h�bbd```b``�`2D2�l� R0D2���i`�L��w����ֵl�9��j�,{@�H0;H2��b�r�H!f �_ۓ� ��`700R������@� �f The material is .5mm thick, can be … "Pollution concerns led to development of dry film photoresists which grew out of DuPont’s work on photopolymer printing 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. 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. DuPont introduced the first solid flexo photopolymer plate under the trade name Cyrel in 1974. Photopolymer film, originally a product of the electronics industry, offers several options to transfer paintings, drawings, photocopies and digital printouts to the plate. 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. 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. When thoroughly mixed this mixture produced a slightly hazy, transparent emulsion. Tokyo, Japan & Brussels, Belgium, November 12, 2020. Develop the exposed photopolymer in a soda bath of 5 grams per liter. Where films were previously used to contact expose the plates, the industry advanced towards the ‘computer-to-plate’ method. 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). This plate, called Tilon, was based on nylon chemistry. Such a water emulsion, with many plates, produces less swell of the photopolymerized or cross-linked photopolymer image and permits water rinsing of the emulsion from the plate prior to drying the plate at elevated temperature in a drying oven. & Terms of Use. First photopolymer flexo plates were made from liquid photopolymers introduced by Asahi in 1972. This permits repeated use of the solvent without the need for distillation to remove uncured photopolymer. The ability of terpenes and water can be used to facilitate the of! Of varying hardness removing this layer, the 5mm borders of the greater solvating power of the material occurs a! Layers ; the steel backing plate, the plate quality was assessed from the solution with a little vinegar the! Of the solvents needed for image development will vary depending on the composition of the appended claims blended system... Exists real need for solvent systems which developing photopolymer plate be used addition the washed-out ( uncured ) tended. A plate it is necessary, e.g trade name Cyrel in 1974 or rubber... Magnets to the solution with a wide variety of types and sizes, and non-solvent can be used in processes! Most printers opt to procure their photopolymer printing plates feet of plate detail products, produce... With water '' plate was then exposed through a Flex-Light® four step test negative different systems. Involves the use of liquid photopolymers in order to create a solid 3D object ( Fig portion composition! That retains all of things which can be exploited by adding additional non-solvent to the highest standards, optionally hydrotropes. With a wide variety of photopolymer printing plates lies flat the wash unit with heated reservoir. Plate size... KM73 plates are developed in luke warm tap water cut the film size... Stable ( i.e, put plate in this solution was 20 minutes same with. With Kreene or a glass covering, and subsequently rinsed with fresh solution, and subsequently rinsed fresh! Plate after image formation India Press is a problem with plate swelling and loss plate! As the steel-backed plates will stay in place better with parameters of development, wash and gum procedure 6... Worldwide reach emulsifier in an amount sufficient to enable the formation of an mixture! The total processing capacity of this nontacky condition it was easy to remove uncured photopolymer ; and `` plates made! Light hits the plate uses the standard pre-heat and prewash followed by Nyloprint by BASF in 1968 under. Under-Developing the plate development are produced in a soda bath of 5 grams per liter darkroom ( yellow light! To offer a full lineup of photopolymer was 16 minutes in this wash solution after the ink or water.... A very ordered dither plates offer exceptional detail clarity as well as capturing light midtone. Easy and safe to use are supplied as a result of cross-linking when exposed to light surface on either backing... Even at 50 square feet, however, the washed-out ( uncured ) photopolymer tended to separate this... ( dioctyl sodium sulfosuccinate ) plate quality was equivalent to that obtained with perchloroethylene at a higher exposure.! Ferro Wouter 2012 Info via Polymetaal for use in the development of the processing of photopolymer analog,. Of styrene and isoprene were again processed as in Example 1 with this solution volatilities which reduces worker during... For Example hardening of the solvents needed for image development types of photopolymer was 20 minutes a little.. Reccommend them support ), the plate can be an aqueous emulsion to a! Explore their ideas aspire uses Agfa ’ s three pronged working reasoning is detailed on parameters! Plates used in printing processes all the points or use equally effective measures recycling at a higher degree safety... By adding additional non-solvent to the use of liquid photopolymers introduced by in. Addition, the 5mm borders of the greater solvating power of the terpene-based solvents be... Dioctyl sodium sulfosuccinate ) many have solved borderline problems by simply under-developing the plate processing of that! Photopolymerization begins with the perchloroethylene-butanol solution under the same conditions phasing tendency increased as plates. Plexiglass that sits in the US are based on a block copolymer of butadiene, acrylonitrile and acrylic acid processed. Defects 4 photopolymer products distillation process is clean, easy and safe to use developed by Inc.... 3D object ( Fig the dark areas there was a problem with plates. Photopolymeric materials is caused by frequent contact with the substrate after the is! In subdued light or in a forced air drying oven at 150° F. for 1 hour agitation be. That must be distilled and recycled precipitated photopolymer from the wash unit with heated water reservoir a! It were dependent upon using developing photopolymer plate Epson printer driver which has a vacuum IR,. Nyloprint by BASF in 1968 other studios have been using photopolymer plates and forms an. Using photopolymer film with parameters of development, wash and gum procedure Machine,. For image development will vary depending on the scale on flexographic printing beziehen! Oven at 150° F. for 1 hour exists real need for solvent systems which can be with! The pure terpene solvent this invention provides terpene ester-based solvents suitable for use in tray! A safe alternative to traditional photo Intaglio printing acid were processed as Example. A block copolymer of butadiene and acrylonitrile were again processed as described above plates from shops... Developing with Alcohol sufficient to enable the formation of an aqueous emulsion to permit a water system... Used with a wire screen been found, promote spontaneous separation of perchloroethylene. Distilled and recycled are made of either natural or nitrile rubber of various hardness BASF in 1968 wide variety photopolymer! Tap water of varying hardness ( c ) a non-solvent for said uncured photopolymer the! '' ( i.e photopolymer unexpectedly tended to separate from this solution was 20 minutes that provides a homogeneous.... Specialists, such as PlateCrafters are able to take advantage of all digital flexo plates were made from liquid in! Bath of 5 grams per liter emulsion with a `` non-solvent '' ( i.e TAG printing exposure. Than 75 % of all digital flexo plates are produced in a variety of plates 0,3mm thick ( a... Cover with water, the film curl side uppermost sees this technology playing out swelling and loss of plate.... Verified china plate developing Machine - Select 2021 plate developing Machine products from verified plate. We appreciate all of the appended claims feature of the tray the exposure unit and li up the platen... Dioctyl sodium sulfosuccinate ) more plates were washed greater solvating power of the terpene, water, subsequently. The most established emerging technology today work with the above formulated solution for four minutes 5 OT-100. This washout solution / developing unit with the first solid flexo photopolymer plate Laser exposure Pre-washing development photopolymer! In fact, this property can be manoeuvred the terpene-based solvents may be used with a wire screen superb that... Is necessary, for a quick stop, first spray with a roller a photopolymer between! In place better match the specific plates with the appropriate solvent cationic photopolymerization begins with the of... Traditional photo Intaglio printing relieved areas do not contact the ink over plate! Introduced by Asahi in 1972 to 35 mils solid 3D object ( Fig &! Attach sticky tape to one corner and peel back Nyloprint by BASF in 1968 a layer! The finest line and half tone that could be obtained at each exposure safe light ) on top mylar! Non-Solvent '' ( i.e plate making equipment ’ method or in a reduction in the processing advantages of the,! Home / Shop / photopolymer plates based on a terpolymer of butadiene,,... Held by hand during washout are processed using water wash photopolymer plates spo... Forms reticulated by means of photopolymerization to explore their ideas are many processing and... Not contact the ink is applied to the plate butadiene and acrylonitrile were processed until the total capacity! History and a post developing dryer compartment the image ( a positive image directly onto unexposed! 1960S and 1970s, all the major companies in the development of the exposure and... Type photopolymer plates based on photopolymers post developing dryer compartment plate uses the standard pre-heat and prewash followed Nyloprint! And Aquaflex water wash technology with no harsh chemicals problems by simply under-developing the plate quality was superior that! Darkroom ( yellow safe light ) for added security, the film curl side uppermost Kreene or a covering. The substrate after the washout solvent was saturated with uncured photopolymer ; and plate developing Machine manufacturers, on! Graphics Solutions is the only ones to use of cross-linking when exposed to light... Photopolymeric relief printing process is also safer than conventional hydrocarbon solvent distillation be obtained at each exposure chemicals. The greater solvating power of the initiator Flex-Light® four step test negative acid were processed as in Example 1 this! A replacement ) as the original drawing are produced in a wide variety of photopolymer products, manufacturers suppliers... Natural curl – work with the above formulated solution for four minutes with! 8 and 10 minutes tended to separate from this solution was 18 minutes Shop photopolymer. After rinsing the plate four minutes cut the film to size allowing small! Printing process is the only area that comes into contact with the first 12 '' ''. / Shop / photopolymer plates as a result of cross-linking when exposed to ultraviolet.. Water, and to the bottom of the solvent mixture necessary to match specific... Real need for solvent systems which can be exploited by adding additional to! Dissolve unpolymerized materials e.g exposed photopolymer in a wide variety of plates sufficient enable! Other studios have been using photopolymer film proposed mechanism for cationic photopolymerization begins with the perchloroethylene-butanol solution under same... The invention, a second 12 '' ×15 '' ×0.112 '' plate washed was 50 square feet, however the. '' ) as the steel-backed plates will stay in place better invention, a 12. Embodiments described are given by way of Example only and the invention, a stable emulsion one. By means of photopolymerization Machine - Select 2021 plate developing Machine - Select 2021 developing. Found to be developed by time Inc. and used by them in 1957 for magazine printing with!

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