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Although the alcohol-free fountain solution is similar to alcohol in the process of printing, it can improve the dispersion of water, speed up the flow rate and leveling. But the use of alcohol-free fountain solution than the use of alcohol more cost-saving, more safe, no pollution, each shift can save about 35% of the cost of moisturizing materials. Today to introduce the alcohol-free fountain solution Use performance characteristics and its function. 1. the speed of ink drying on a print, the difference between the use of alcohol and the use of alcohol-free fountain solution: using alcohol or alcohol-free fountain solution, printing ink drying speed is the same. Only air temperature, humidity, water absorption of paper, solvent volatilization speed in ink, etc., is related to the speed of ink drying on printed matter, and the fast and slow drying of printed matter is not related to the use of alcohol or alcohol-free fountain solution. 2. the use of alcohol-free fountain solution, the effect on the ink color of printed matter: it will not have an impact on the ink color of printed matter, because the ink is oily material, the production material of alcohol-free fountain solution is water-sensitive material, hydrophilic material and oily material are not compatible, so the ink color of products printed with alcohol-free fountain solution will not change. 3. why alcohol should be replaced with alcohol-free fountain solution: alcohol-free fountain solution, although similar to the role of alcohol in the printing process, both in the water to improve the dispersion of water, speed up the flow of water and leveling and other functions. But the use of alcohol-free fountain solution than the use of alcohol more cost-saving, more safe, no pollution, each shift can save about 65% of the cost of moisturizing materials. 4. the difference between alcohol-free fountain solution and alcohol: the molecular weight of alcohol is small, while the material with small molecular weight is volatile. The alcohol can reduce the temperature of the PS plate when the plate volatilizes, and when the temperature of the PS plate is lower than the air temperature, the moisture in the air changes to the liquid to stick to the PS plate, so when using alcohol PS plate the layout has an additional water supply source. Alcohol-free fountain solution of the large amount of material, large amount of material is not volatile. remind, PS plate the layout temperature and air temperature are close, the moisture in the air can not fall on the layout, the water obtained by using alcohol-free fountain solution PS plate is only supplied by water roller. Functional: 1. increase the viscosity of the fountain solution. 2. alcohol can sterilize the fountain solution, the alcohol problem is obvious. 3. reducing the tension on the liquid surface, water becomes more "wet" to facilitate its diffusion in the hydrophilic part of the plate. 4. alcohol the toxicity is high, the isopropanol content is generally required to be below 400 ppm, but is often greatly exceeded in the printing shop. 5. feasibility: in the aspect of feasibility, it is necessary to point out that the alcohol-free fountain solution can not be applied to the printing press at will, and communicate closely with the printing operator, and it is absolutely necessary to adjust the machine carefully. 6. necessity is reflected in the use of alcohol-free fountain solution, the function mentioned above will be preserved, while the existing problems will be overcome, saving money, environmental protection and labor protection, enterprises, society and workers will benefit. In particular, because alcohol is actually a kind of active ink thinner, it will make ink lose luster, and affect color. No alcohol after all this problem, ink will be reduced, dot more accurate, printing paper will also dry faster.

Case: in the use of Heidelberg CD102 offset printing machine for printing, there has been printing ink color discoloration phenomenon, seriously affected the quality of printing. In this paper, the author summarizes the main causes and elimination methods of ink discoloration. The printer hopes to give some enlightenment to the industry colleagues through my experience. Fountain Solution supply 1. cause analysis If the amount of raw liquid supply is too small, the pH value of the liquid will become smaller, resulting in ink separation (link and pigment separation), resulting in uncontrollable water consumption, resulting in ink color change, sometimes dirty plate phenomenon, while increasing the amount of water, dirty plate phenomenon more serious; if the Fountain Solution supply is less, the pH value will become larger.Add to the printing plate blank part of the hydrophilic layer is insufficient, unable to resist the invasion of ink, resulting in a printing plate water consumption big, the production of pasting plate and ink discoloration. Such as: printing is a large area gradient dot, printing process found that the gradual dot paste plate, ink color change, thought is dirty plate phenomenon, after increasing water consumption, the problem has not been solved, so immediately stop, clean plate with cleaning agent, measuring the pH value of Fountain Solution 6.0, adjust the supply of Fountain Solution, so that the pH value of Fountain Solution reduced to about 5.0, the problem was solved. 2. Exclusion methods Change the Fountain Solution, or adjust the supply amount of the Fountain Solution, so that the pH value of the Fountain Solution is controlled at 5.0~5.5. Hardness of water 1. cause analysis High hardness of water, water contains calcium oxide, magnesium oxide and other substances together with the chemical composition of ink and paper powder, spray powder transfer to the surface of ink roll, resulting in ink roll deinking and ink transfer can not be controlled, at the same time, these substances contain fatty acids will also lead to ink alkaline increase, easy to cause paste plate phenomenon, cause ink color change. For example: long-term use of high hardness of tap water, easy to make ink roll to produce crystals, cause ink roll crystallization, and printing products reflect a large amount of water, water lines are thicker (mainly printing field version, if the alcohol ratio is low, this phenomenon will occur), causing paste plate, dirty plate, printed product dingy, and easy to plug water tank pipes. 2. exclusion methods Using soft water and reduce water consumption, so that the water lines become thin, not easy to paste version, printing gloss, ink roller surface crystal relatively reduced. Replacement time of fountain solution 1. cause analysis Because of the long-term recycling of fountain solution, there will be too many microbes in the fountain solution, which will make the fountain solution deteriorate, resulting in unstable water supply and discoloration of ink color. For example: when printing quarto cover, sampling inspection found printing on both sides of the ink color discoloration. Stop check found that the layout is still very wet, it is determined that the large water plate layout moisture volatilization slow. Check the water roller ink mark pressure is normal, after reducing water consumption, the middle dirty plate, after analysis may be the fountain solution has not been replaced for a long time, resulting in the fountain solution deterioration, causing water film uncontrollable. After replacing the water tank, the printing ink color is normal. 2. exclusion methods Change the fountain solution in the water tank regularly. Install a drain pipe at the water tank outlet, and connect the upper water outlet to the machine's own water pipe, which can clean the water tank quickly. If the filter cloth cover is installed at the return water outlet, keep the water in the water tank clean and clean, it can prevent long-term blockage of the water pipe.k

Generally, the causes of the failure are: Ink viscosity is too high; Is ink film drying too fast; Is the ink has particles; Ink flow is too poor; Is insufficient printing pressure; Is the printing plate sleeve circumference uneven, not smooth and so on. Treatment methods: First, ink viscosity should be adjusted between 25~30 S/25℃· coating 4 cups; Second, ink in printing to add slow dry diluent; Third, to prevent ink premature drying in the printing plate hole (add wetting aids); Fourth, add 1%~3% flattening (e.g. ether) or adjust printing pressure, so that its substrate tension control at 0.05; Fifth, change or polish printing plate surface.

Dot expansion, mainly in the version of the dot, can not be faithfully reproduced, the result of the dot deformation or connected, insufficient contrast, affecting the quality of printed products. This phenomenon is mostly due to improper ink blending, ink too thin too soft, insufficient concentration, ink blending should be added appropriate amount of debonding, not less ink blending, or use a higher concentration of ink, reduce the amount of ink, this phenomenon can be overcome, followed by printing machine ink roll hardness is not suitable, roller pressure, blanket loose, roller arrangement is also an important cause of this problem, also due to inspection adjustment.

PrintBar Alcohol-free Fountain Solution Technical Indicators: 1. There is no need to add IPA or other additives during use 2. Product neutral A. High fidelity fountain solution: In the printing process can make the original copy more authentic B. VOC free fountain solution: fountain solution does not contain VOC (according to German DIN 55649-2000 standard) C. Completely free alcohol fountain solution: the use of the process does not need to add alcohol, rather than the Reduce alcohol fountain solution on the market 3. Suitable for all kinds of offset printing machines 4. No damage to dampening roller and printing parts, roller will gradually become soft, service life is significantly extended, maintenance cost is reduced. 5. In line with the ministry of environmental protection's standards for toys, food, packaging, secondary and primary school teaching materials, lithographic green printing HJ2503-2011 , No adverse effect on ink roller dampening roller. Parameter : Origin: Shanghai Specification: net weight 20KG/ drum Color: colorless Shelf life :24 months Packing: in barrels Storage: avoid direct sunlight and store in a cool place Features: A:Performance 1. Suitable for all imported and domestic flat offset press, any PS printing plate and CTP printing plate. Regardless of the old and new, the real realization of free alcohol (zero alcohol) printing. 2. There is no need to special adjust the temperature of the printing equipment and water tank, which can be used on the machine, and the same use conditions as with alcohol printing, can completely achieve the condition of alcohol printing. Compared with alcohol printing,water- ink balance is easier to achieve, easy to operate, more realistic color. 3. In the high temperature environment, printing plate water film thickness and continuity, smooth printing, no need to add alcohol. 4. Super cushioning system.Ensure PH is stable between 4.8 and 5.6, suitable for hard and softwater 5. The surface tension of the working liquid is 32-38dye/cm,Small amount of ink can realize printing dot clear, color realistic, large ink position can stabilize printing. 6. Contains water-retaining element, after stopping the machine and starts again without dirty, reducing waste. Anti - corrosion, anti - calcium, non - toxic, non - foam, non - blocking pipe. 7. Start quickly and stable water-ink balance, effectively prevent "dry" and other problemsShanghai chenjie printing material co.,LTD B: Eco-Friendly 1. Compliance with environmental protection HJ2503-2011 standard, through the SGS standard certification. 2. Non-toxic, tasteless, can improve the air quality of the workshop. C: Innovation 1. No need to add alcohol, reduce water,reduce ink, can reduce production costs. 2. Can significantly improve printing quality, printing ink saturation, dot clear bright. 3. Ink drying fast, improve production efficiency. D: Safety 1. Prevent combustion and eliminate fire hazards. 2. No harm to the equipment rollers. E: Stabilization 1. Wide range of application, compatible with the local water quality. 2. Easy to use, stable fountain. USAGE: Under normal condition of all data of the machine,There is no need to Purpose-adjust the machine. Mix 3%-4% of the original liquid with water then you can use it. Domestic machines and Japanese machines add about 3% ,German machines add about 4%, Tank temperature adjustable to 8 ℃ ~ 10 ℃, the PH value between 5.2 to 5.8, conductivity around 800 Ω ~ 1200 Ω ,There is no need to lower the temperature of the tank.Conditions of use are the same as when printing with alcohol. Wash water tank frequently during use, keep water tank clean,It is best to install a sink recycling filter cotton ,Preventing ink and paper scraps from entering after printing and it will change the electrical conductivity of the water tank,Start up can print smoothly,The value is adjusted according to the actual operation: Proper adjustment of dampening roller clearance and speed.

UV ink has been widely used in label flexographic printing because of its advantages of fast curing speed, high printing color concentration and good stability, as long as it does not touch ultraviolet rays, it will not be dry and fixed in ink bucket, small smell and basically no VOC. But in the actual printing, it is inevitable to encounter some problems, such as incomplete curing, poor adhesion, the appearance of line color points, sun resistance and so on, the following will be on these printing problems cause analysis, and summed up the corresponding solutions. Remember to take the small book, do the record o! 01 Ink curing is incomplete Problem description There is ink on the guide roll between the printing units and it will be transferred to the printing material. Cause analysis and solutions solve the UV ink curing incomplete problem need from the curing device, printing operation, ink itself three aspects to find the cause, and then to solve the disease. To check whether there is dirt on the surface of the UV lamp tube and the reflector cover that prevents the UV light from irradiating the print, if any, clean, and develop the habit of cleaning UV lamp tube, lampshade and reflector cover regularly with anhydrous alcohol. Meanwhile, check the service time of the UV lamp tube, if it has exceeded the service life, it should be replaced to ensure that the UV lamp has enough power; or turn on several sets of UV lights to increase the UV radiation energy. Printing speed too fast will cause UV ink to accept UV radiation energy is not enough, curing time is too short, resulting in UV ink curing is not thorough, reduce printing speed can be easily solved. Ink layer too thick will cause only UV ink surface curing and internal curing is not complete, this time need to replace the roller, appropriate reduction of ink, reduce the thickness of ink layer. The above are UV ink curing incomplete external cause, and the internal cause is UV ink itself to the absorption spectrum of UV light and the emission spectrum of the lamp matching a narrow range, at this time can choose the appropriate photosensitizer added to the ink, adding a ratio of 1%~3%, by expanding the absorption spectrum of ink to improve the curing efficiency, thereby improving the curing effect. 02 Poor adhesion of ink Problem description 3 M-600 tape for ink coating adhesion test, ink from the substrate surface off, or after printing ink from the first printing ink layer off. Cause analysis and solutions Improper selection of printing materials or low surface tension is the most common reason for poor ink adhesion, if the printing material and ink do not match, it needs to be replaced; for plastic film materials, the surface tension can be improved by corona treatment, or the coating can be increased to improve its adhesion, in short, to ensure that its surface tension up to 38 dyne. In some cases, poor ink adhesion is also related to ink formulation, if the contrast test of different batches of ink have this problem, you can preprint the ink before printing a layer of bottom paint. When using the first hot and then printing process, if the ink on the surface of hot stamping foil adhesion is poor, easy to fall off, can be coated with smooth oil for protection. poor adhesion between ink layers, often the former color ink curing excessive, can appropriately reduce the previous color group UV lamp curing power. Ink curing is not complete is also one of the causes of poor adhesion of ink layer, find its cause, take appropriate measures can. 03 Irregular Line Point Problem description The same layout, the same color appears irregular line color points, like a meteor. Cause analysis and solutions The problem of spatula is the most common cause of this phenomenon. If the scraper is damaged, it is necessary to replace the scraper; if the scraper is thin or soft, it can increase the back knife, or replace the 0.15 mm~0.3 mm thickness scraper blade; the wrong contact angle will also cause this problem, it is recommended that the scraper angle is 20°mm~35°; in addition, the scraper pressure is also one of the reasons, the lightest scraper pressure should be used. This problem can also be solved from the roller, in the premise of ensuring the amount of ink transfer, the replacement of a higher number of wire roller also has the effect of improvement. Ink viscosity is too high to lead to poor ink transfer effect, there will also be problems, can be appropriate to add diluents, reduce ink viscosity; in order not to change the concentration of discoloration, can also be heated to use, especially in the northern winter area. 04 Printing is not sun-resistant Problem description The label faded after exposure to sunlight for some time. Cause analysis and solutions Different levels of ink sun resistance, to achieve the ideal sun resistance effect, must choose a higher level of ink. In the spot ink blending should also pay attention to, spot ink sun resistance level depends on the use of each primary ink. If you have selected enough grade of sun-resistant ink, but still can not achieve the required sun-resistant time, you can appropriately increase the thickness of the ink layer.

We know that in general, printing enterprises to implement green printing, from the source of governance is very critical. Therefore, we need to work hard on the purchase of raw materials. Paper procurement As the carrier of all printing, paper is the most important link that can not be ignored. In making paper purchases, we need to pay attention to the following points: l :: Use of paper certified by sustainable forests, paper with more than 30 per cent of waste pulp and paper with more than 50 per cent of non-wood pulp content; l :: Pulp paper treated with elemental chlorine-free bleaching (elemental chlorine-free or total chlorine-free bleaching); l :: Primary and secondary school textbooks, teaching aids and workbooks are printed on paper without fluorescent brighteners; -- Procurement of other printing consumables In the purchase of other printing consumables, printing enterprises should also pay attention to the following points: l : Suppliers of raw and auxiliary materials, such as ink, oil, rubber and adhesives, should provide non-added phthalates (plasticizers); l :The fountain solution does not add methanol, cyclohexanone; l :The sum of toluene and xylene in ink cleaning agent and blanket cleaning agent should be controlled within the standard range; l :offset printing ink shall meet HJ/T 370-2007 requirements; -- In addition, if the following points can be achieved in procurement, the implementation of green printing for printing enterprises is absolutely bonus points, such as: l :: Use of free CTP plates l :: Use of alcohol-free fountain solution l :: Pre-coated materials l :: Use of water-based varnish -- In short, printing enterprises to implement green printing, can not be completed overnight, if we can pay attention to the use of green environmental protection products when purchasing raw materials, then to promote the development of green printing enterprises can also play a multiplier effect with half the effort. https://www.shprintbar.com/alcohol-free-fountain-solution/57046785.html

1.Dampening roller cleaner: can remove ink dirt on the dampening roll, and make the dampening roll quickly restore hydrophilic performance. 2. Plate cleaning paste: as is PS plate cleaning paste, can remove the dirty surface of the PS plate and old ink residue; clean the plate layout, no damage on image, can improve the quality of printing products; stable performance, safe and non-toxic. Usage: After soaking this paste with sponge or cotton yarn, you can clean the dirty layout and also use as the cleaning agent before printing. 3. Blanket and roller wash: can quickly clean the ink on the roller; can remove the dirty, ink and paper powder which on the blanket; will not burn. 4. Blanket rejuvenator and conditioner: can eliminate Blanket surface glass hardening, restore elasticity; can make blanket indentation, concave surface return to flat; volatile fast, will not burn. 5.Plate cleaner : Here have CTP plate cleaner for CTP plate and PS plate. And UV plate cleaner for UV plate (CTCP-Plate) 6. ZYLINDER-PASTE : It prevents ink piling , saves printing time, Avoid the destruction of image and doubling. Improved printing quality

Printing is a very interesting thing, like doing experiments in the laboratory, understanding the characteristics of different materials, and constantly trying, in order to experiment with the most suitable material technology for your design. Do design if the printing process, paper materials do not understand, the effect of the picture and the object is very likely to be very different. Today, the printer will lead you to take stock of the relevant knowledge about - printing documents. Printed documents The current PDF is to provide the most convenient file format for communication between customers, printing plants and colleagues, and the format of advertising and media documents submitted to newspaper and magazine publishers is also based on PDF, and the final output of the printer is also a high-resolution PDF document. Adobe company Acrobat.InDesign.Illustrator can save PDF documents. In order to avoid the repeated modification of file settings to affect the design process, before starting the design needs to do is to use predefined settings to optimize the compression program. on the Indesign, click PDF preset → print quality. Then do custom PDF settings, click on the file → export, select. PDF format, in a pop-up window set cut, bleeding and printer registration marks. Check file settings again in the Acrobat to ensure accuracy. When you're writing a book with a InDesign, choose the "page" option instead of "cross-page" when exporting a file, and export each P, of the print shop separately to help us spell. Font embedding is careless designers must remember things, if the font can not be embedded, usually because it is missing in the folder or the printing house is limited to it, so after opening, the font will be replaced, if your design is flower body, and print out into the traditional song style, it is sad. So remember to embed fonts when exporting files, InDesign and preprint checking in the AI can help us avoid errors. https://www.shprintbar.com/

The fountain solution PH value is low and acidic ,while the water ph is about 6, So we can control the PH value of the water tank at 5.2 better,Control the PH value is equal to control the water-ink balance. When PH is too low(should reduce the amount added): scumming,image weakening,ink drying too slow(set-off),mottle(Ink speck), Imprinting not solid. When PH is too high:(should Add amount added):scumming,image weakening,plate etched,Poor abrasion,Tinting ,roller Ink piling

Phenomenon :The phenomenon refers to the full plate or topo-plate have specks, there maybe large and small.. Reason: 1:Plate quality problem ,sensitive film (emulsion film) is too thin or contains impurities, for another recycled aluminum plate 2: plate protector is not enough,Lead to machine stop and scumming ,Content of plate protector in the fountain solution, Increase the amount of the fountain solution (But PrintBar alcohol-free fountain solution R&D when add more quantity then 2% of the fountain solution that will not appear this phenomenon). 3.The water corrosion the plate,maybe caused by water quality or added other things that shouldn't have been added 4.From Ink side, Due to the poor water resistance of pigments in ink, Ink formula adjustment is improper, the viscosity reducer and low viscosity inking oil use too much, Ink deployment of too soft too thin and cause paste plate. To solve this problem .one is Choose a good water resistance ink .two is Adjust the dosage of various printing auxiliaries. To ensure the ink water resistance, ink-water balance. 5.From printing fountain solution side, The fountain solution PH value is low and heavily acidic, ink scumming, That means it's etched print image. Ink drying time is long,You need alkalinity to increase the PH. The reason is it's too acidic, Because our fountain solution is acidic, So appropriate to reduce the amount of fountain solution added.

Shanghai Chenjie printing material co., LTD. - we are honored to invite you to attend: The 4th International Printing Technology Exhibition of China (Guangdong) ,will be April 9-13, 2019 in Dongguan Houjie town-Guangdong modern international exhibition center was held. Chenjie PrintBar Alcohol-Free Fountain Solution: Comply with the trend of green energy conservation and environmental protection, and jointly communicate the ways to eliminate alcohol and reduce costs. Booth number: 6-2124