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The Requirements of PS Plate on Aluminum Base Plate |
Posted by: lboureda - 12-08-2020, 08:37 AM - Forum: Knowledge & Technique
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Offset printing is the main printing method at present. PS plate and CTP pate are the two necessary plates for offset printing. PS plate is made by coating a non-silver photosensitive (thermal) resin layer on aluminum base plate with a thickness of 0.15 mm to 0.5 mm after electrolytic oxidation on the surface.Aluminum base plate is the main raw material for PS plate production, accounting for 80% of the total consumption. It is not only a support for the PS plate, but also has great effect on the performance of PS plate.Offset printing is realized by the principle of water and ink balance, so the quality of grain structure has a great influence on the quality of the printed product. The state of grain layer is related to the quality of the aluminum plate and the electrolytic and oxidation processes.Therefore, the production of the PS plate has high requirements for the aluminum base plate. The quality of the aluminum sheet has close relationship with the quality of the aluminum ingot and the rolling process.The quality industrial pure aluminum sheet is a primary choice for PS plate. There are two roughening ways for base plate treatment. One is physical roughening, the other is duielectrolytic roughening.At present, most PS plate manufacturers adopt the electrolytic graining process to form a uniform and dense grain layer on the surface of the aluminum plate. 1050 aluminum sheet is the popular aluminum sheet is the common choice for this treatment. As a big aluminium sheet manufacturer in China, Haomei offer you superior 1050 aluminum sheet.
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What Is PS Plate Making Process |
Posted by: JulianeLaf - 12-08-2020, 08:37 AM - Forum: aluminium faq
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Offset printing is a traditional printing method. It is the main method of lithographic printing. It refers to the use of PS / CTP printing to transfer the graphic and text information that you want to express to the substrate, and finally make paper media such as books and newspapers.PS plate making process is to make the aluminum alloy material into thin plats of a certain thickness through hot-rolled process, then the surface of the thin plate will be coated with a photosensitive resin after a specific process.PS plate for offset printing can be used at any time for printing plates. There are positive and negative PS plates. Among them, positive PS plate accounts for a large share and its making technology is matured.PS plate is of high printing quality, strong printing resistance, environmental friendliness, cleanliness, sanitation and reasonable cost. Haomei can offer you superior aluminum base plate for positive PS plate. The main types are 1050 aluminum plate, 1060 aluminum plate, and 1070 aluminum plate.Their aluminum content are respectively are ≥99.50%, ≥99.60%, and ≥99.70%. Haomei aluminum base plates have the advantages of low density, high strength, moderate abrasion resistance, good formability, good hydrophilicity, high stability, and good surface treatment. It has become a popular choice for making positive PS plate.
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1060 Aluminum Plate for Positive PS Plate |
Posted by: progueiw - 12-08-2020, 08:37 AM - Forum: Knowledge & Technique
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Positive PS plate is is a lithographic printing plate with a photosensitive resin layer pre-coated on the substrate of aluminum plate. Through a series of processing such as electrolytic graining and anodizing, aluminum plate is formed a base plate for printing.The commonly used PS aluminum base plate is 1060 aluminum sheet. In addition PS plate, it is also used to make thermal CTP plates, photosensitive CTP plates, UV-CTP plates, etc. The width of Haomei PS version base is generally 400-1600mm, and the conventional thickness is 0.10-0.50mm.PS plate has requirements for surface quality and flatness. Therefore, in order to obtain high quality PS aluminum base plate, special straightening methods must be adopted after cold rolling.During PS plate making process, Haomei Aluminum uses advanced straightening process to avoid defects such as hard scratches, flat marks, and shock marks. The aluminum sheet produced by this equipment is of high quality.In addition, Haomei Aluminum uses matte air conduction technology to improve plate making efficiency. Through the electrostatic spraying technology, the air between the film and the PS plate is smoothly extracted when the plate is exposed, and the vacuum time is shortened by two thirds compared with the PS plate without a matte surface, thereby reducing the plate making time.
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Which Is Better PS Plate V CTP Plate |
Posted by: Jamesreorb - 12-08-2020, 08:37 AM - Forum: aluminium faq
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In the printing industry, the PS plate mainly refers to the aluminum plate used for printing, which has two types: positive PS plate and negative PS plate.CTP plate has several meanings: computer to plate, computer to press, computer to paper/print. Here we refer to computer to plate. It is an imaging technology used in modern printing processes. In this technology, an image created in a Desktop Publishing (DTP) application is output directly to a printing plate.There are three types: photopolymer plates, siverhalogen plates and thermal CTP plate. Thermal CTP platemaking technology is currently the most mature, stable, and effective platemaking technology.The PS plate and CTP plate has been developed in China for over one decade. Haomei Aluminum has comprehensive range of aluminum plates for making PS plate and CTP plate. The rapid development of the enterprise in recent years has contributed to a rapid increase in production volume, which basically meets the growing needs of offset printing plates.
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Three Main Types of CTP Plates |
Posted by: usekilybu - 12-08-2020, 08:37 AM - Forum: Knowledge & Technique
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Compared with PS plate, there are many types of CTP offset printing plates. Among the many types, there are three main kinds: photopolymer plates, silverhalogen plates and thermal plates. Now let’s have a look of their pros and cons.Silverhalogen PlatesThe biggest advantage of silverhalogen printing plates is the sensitive photosensibility. So far, it is still the plate with the fastest photosensitive speed. Whether it is a thermal plate or photopolymer plate, it can’t be as fast as the silverhalogen plates.However, its disadvantages are also obvious. Firstly, photosensitive materials have always been expensive. Secondly, this plate has high requirements for inks and its printing resistance is also not so good. More importantly, the development process of silverhalogen printing plates brings toxic waste liquid and causes pollution to the environment.Thermal CTP PlatesThermal CTP plate has very low sensitivity to natural light. The infrared laser is used for exposure, and it can be operated in bright room conditions. The lattice point of the thermal plates have good reproducibility, high resolution and sharp edge. It has excellent printability, and has a printing resistance of 1 million times after baking. Therefore, it dominates the commercial printing.But it has high requirements for ambient temperature and humidity. In addition, its sensibility is not as good as the the others.Photopolymer platesIt is generally composed of an aluminum plate base, a photosensitive layer, and a surface layer. Violet laser technology is very popular now. Violet laser printing plates are more active and require very low energy to expose and image. So it is widely used in newspaper industry.This technology determines that the plates need to be stored in a dark room. Besides, its dot recovery is relatively poorer compared with thermal ctp plates.
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CTP Plate V CTCP Plate |
Posted by: Rafaelajub - 12-08-2020, 08:37 AM - Forum: Knowledge & Technique
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CTP plate is the present plate making method while CTCP plate is getting more and more attention. Which will dominates the printing industry in the future? Here is a comparison.1. The use of PS plateAlthough ctp plate price has been lower than before through years of mass production, it still can be as cheap as the PS plate. While for CTCP plate making, PS plate also can be used. Due to the selection of PS plates, it will helps the CTCP plate manufacturer a lot of cost on operator training and subsequent maintenance.2. The light source is more economicalAs we all know, the largest cost in the use of CTP plates is the laser head. Its service life is not long and the replacement cost is also appropriately high. As for the CTCP plate, it chooses the cheap lamps. And the new generation of CTCP plates will use LED to replace the lamps, of which the service life is unlimited. The light source will also save a huge amount of money for you.3. Simple operationFor CTCP plate making, it can be operated in a bright indoor environment and has no need to modify the current hardware and extra network. However, as a new product, many people are not confident in is printing quality. Some CTCP plate manufacturers reflects that there is no difference in imaging quality between CTP plate and CTCP plate. If you like to get CTCP plate price, welcome to contact us.
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What Is PS Plate Meaning |
Posted by: Aqyfkwvy - 12-08-2020, 08:37 AM - Forum: Knowledge & Technique
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The PS plate meaning is pre-sensitized plate used in offset printing. In offset printing, the image to be printed comes from a coated aluminium sheet, placed around the printing cylinder. The aluminium is treated so that its surface is hydrophilic (attracts water), while the developed PS plate coating is hydrophobic.The PS plate has two types: positive PS plate and negative PS plate. Of them, positive PS plate accounts for the large share, which is used in the majority of medium to large-scale printing tasks today. Its making technology is also matured.The PS plate is made of substrate and the PS plate coating, that is, photosensitive layer. The substrate is mostly aluminum base plate. The photosensitive layer is a layer formed by coating the photosensitive liquid on the base plate.Its main components are photosensitizer, film-forming agent and auxiliary agent. The photosensitizer commonly used in positive PS plates is soluble diazonaphthoquinone type photosensitive resin while that in negative PS plate is insoluble azide-based photosensitive resins.The positve PS plate has the advantages of light weight, stable performance, clear images, rich layers, and high printing quality. Its invention and application are a major change in the printing industry. At present, the PS plate has been matched with electronic typesetting, electronic color separation, and multicolor offset printing, which has become the mainstream platemaking system today.
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Facing to Covid19 We are The One |
Posted by: kevinbear - 12-08-2020, 08:37 AM - Forum: Knowledge & Technique
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With the Covid-19 spreading fast globally, a lack of medical supply is more obvious in many countries. Facing to the sudden outbreak of the epidemic, most countries are not equipped to deal with it or don't realize its seriousness. China and Chinese people,having fought against the virus for a period, has known what is effective to protect ourselves.At the beginning of the Coronavirus disease in China, it is not forgettable that many countries like Japan, Italy, Russia, Korea, Indonesia,German, UK, Thailand,etc. donated thousands of the facial masks, protective suit and other medical supply to help Chinese people to fight against the Covid-19.Now China’s epidemic situation has been greatly improved that most people has returned to the normal life and work. Not only Chinese government but also most Chinese people are helping those suffering countries in various ways.In the first time, Chinese government has donated millions of medical supply and dispatched personnel to help those countries who are in urgent need of those help. At the same time, our government representing Chinese people showed our best wishes:”When people are determined, they can overcome anything.”,”Unis nours vaincrons”,” Berg und Tal kommen nicht zusammen, wohi aber die Menschen”,”铁干朋友,风雨同行”,etc.More than that, many civil societies and company are trying their best to help the foreign friends. Haomei Aluminum, I work for, has been concerned about the epidemic situation abroad since the early time. In the first time, our colleague asked their customers about the epidemic situation in their countries and if they needed those medical supply including facial mask and forehead thermometer. No matter whether they have business contact with us or not, our boss told us that we should help everyone within our ability. In addition, we wanted to give them our suggestions of the effective protective measures.In the past month Haomei purchased thousands of masks from every possible channel and sent them to our clients abroad in Europe, North America, South America, Philippines, Korea and Africa.Many customers showed their thanks to us, which has made us moved a lot. One of my colleague, Susan donated two hundred of masks to her Italy customer and his reply made all of us moved. He showed his thanks on Facebook: "Dear Susan, thank you again for your gift. The masks were delivered to health facilities in the city where I live. The Mayor of the city has published the thanks on Facebook. It will be my care to make public the gesture of immense humanity and brotherhood spontaneously performed by you."The outbreak of Covid-19 has proved again that we are the one. As a community of shared future, we should be united to win the battle no matter what belief we have, where we are from and which language we speak.Facing to this bruising pandemic, more urgent, effective measures and serious attitude should be taken in all of the affected countries. The reasong why China and Chinese people get a lot of help and spare no effort to help others at present is because that we are the one. We only have one wish: All of us can be safe and health soon. When the epidemic is over, we can give each other a hug.
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CTP Plate The Future Direction of Printing Material |
Posted by: SterlingCo - 12-08-2020, 08:37 AM - Forum: Knowledge & Technique
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The CTP plate is now widely used in direct platemaking technology. At present, the main types of ctp plates are silverhalogen plates, photopolymer plates and thermal CTP plate.The silverhalogen plates consists of a plate base, a silver halide emulsion layer and a physical developing layer. As for the plate base, there are paper-coated plate base, polyester plate base and aluminum base plate. For offset printing, the aluminum base pate is more used. It is a widely used plate, but it has the problems of complicated development and pollution, and needs to be further improved.The photopolymer CTP plate is composed of a plate base, a photosensitive layer and a protective layer. The photosensitive CTP plate has undergone significant development in recent years, especially the introduction of violet photopolymer plate, greatly improving the sensitivity of this plate.The appearance of thermal CTP plate is relatively late, which is firstly developed by Kodak and 3M in the 1990s. The thermal CTP technology has developed rapidly in the past 10 years, gradually becoming the mainstream of CTP technology.Films and printing plates are two types of photosensitive materials commonly used in printing plates. In recent years, CTP technology has spread rapidly around the world. The traditional platemaking process from film imaging to PS plates is gradually being replaced by CTP technology.The demand for platemaking films and conventional PS plates has gradually decreased, and the demand for CTP plates has grown rapidly. It is predictable that the CTP technology will be the direction of the platemaking industry. Similarly, CTP plates will be the development direction of the printing photosensitive material.
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Aluminium Foil For Pharmaceutical Packaging in China |
Posted by: KretDimachake - 12-08-2020, 08:34 AM - Forum: Knowledge & Technique
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Almost all products in modern packaging that require opaque or highly-barrier composite materials use aluminum foil as the barrier layer. This is because aluminum foil has a highly dense metal crystal structure that can completely block any gas.The aluminium foil for pharmaceutical packaging will account for about 60% to 70% of the future pharmaceutical tablet and capsule packaging, which is one of the most promising pharmaceutical packaging materials at present.The quality of Chinese pharmaceutical aluminium foil is a little lower than that of the international top level. It is reflected that there are two main problems:1. The number of pinholes in medicinal aluminum foil is far from meeting the requirements. The pinhole of aluminum foil is a defect of penetration performance, which affects the barrier performance of aluminum foil, especially for pharmaceutical packaging. It is easy for oxygen, water vapor, and light to penetrate and reduce the drug's efficacy.The national standard of pharmaceutical foil requires that the pinhole diameter is not more than 0.3mm, and the diameter of 0.1 - 0.33mm cannot be more than 1 per square meter. At present, domestic aluminum foil rarely meets this standard.2. The thickness of medicinal aluminum foil is uneven, and the tensile strength is low. Due to the uneven thickness of the aluminum foil, it will make the the adhesive coating amount difficult to reach the standard during the mechanical coating process of the PTP aluminum foil, and then affect the combination of the aluminum foil and the polyvinyl chloride hard sheet.In addition, it also will lead to the break of aluminum foil after the tension is applied in the actual processing.As a professional manufacturer of aluminium foil for medicine packaging, Haomei Aluminum digs in on the improvement of the manufacturing process. Now it has 10 sophisticated foil rolling mill instruments and equipment to ensure the stable output of medicinal aluminum foil.The produced medical aluminum foil is flat, safe, hygienic, clean, uniform in color, no pinholes, no oil stains,etc. And the heavy metal does not exceed 0.25 parts per million. Haomei pharmaceutical aluminum foil is strictly in accordance with industry standards. Welcome to contact us if you need.
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