What is screen printing

You typed it wrong, it should be screen printing

Screen printing as a wide range of applications of printing, according to the different printing materials can be divided into: textile printing, plastic printing, metal printing, ceramic printing, glass printing, electronic product printing, lottery screen printing, electric decorative advertising board silkscreen, metal advertising board silkscreen, stainless steel products silkscreen, light reflector silkscreen, silkscreen transfer electrochemical aluminum, silkscreen prints and lacquer silkscreen and so on. Screen printing prints and lacquer screen printing and so on. Fabric printing

Fabric printing is to print on the fabric to form the pattern of the process. Printing methods are: plate printing, screen printing, roller screen printing, transfer printing and multi-color dyeing printing methods, including screen printing from the type of plate printing (including the type of paper and zinc plate), began by hand, and gradually move towards semi-automation, full automation, and later and the development of the net type to the round net type.

Textile printing in general there are several printing methods:

1. paint direct printing paint direct printing is the modulation of the printing color paste directly printed on the fabric, which is the printing process in the most simple and commonly used process. Paint direct printing process generally refers to printing on white or light-colored fabrics, it is easy to spell color, simple process, after printing by baking treatment can be applied to a variety of fibers of textiles. Paint direct printing process according to the current often used adhesives can be divided into Akramin F-type adhesives. Acrylate binder, butylbenzene emulsion and crustacean binder three direct printing process.

2. Silk printing The main methods of silk printing direct printing method, pull-dyeing printing method, anti-dyeing printing method. Direct printing method has been introduced earlier, pull-dyeing printing method, as well as transfer printing method, penetration printing method will be introduced later in the relevant subsection alone, here mainly introduces anti-dyeing printing method.

3. knitted underwear printing knitted underwear printing is mainly applied to paint direct printing process, fabric printing by double drying or natural drying can be avoided, avoiding the wet treatment of knitted fabrics easily deformed and agricultural piece of wet treatment difficulties and other issues. Printing method to flat screen printing based, and is divided into two ways of manual scraping and machine operation. This printing method can be adapted to a variety of composition forms and organizational structure of the flower pattern, and suitable for small quantities of multi-color production needs.

4. Batting dye printing Batting dye printing, also known as carving printing, refers to the use of dye pulling agent printed on colored fabrics, part of the pigment has been dyed to destroy, and therefore access to a variety of patterns, patterns of the printing method. Dye pulling agent is a kind of chemical that can make the dyeing base lose color. Such as: hanging white decision, stannous chloride, etc.. This method can be divided into pattern for white (pull white) and pattern for colored (pull printing) two kinds. The latter dyeing method makes the fabric pattern fine, but the process is complex, high cost.

5. screen printing rotten flowers rotten system using two different acid-resistant fiber blended textiles, after acid rotten pulp printing and chemical processing, the natural fiber part of the rot away from the acid-resistant, acid-resistant part of the chemical fibers, the formation of crystal transparent flowers, its special style of rotten products have a sense of high-grade splendor. Rotten products are not only gorgeous in appearance, but also excellent in inner quality, with wear-resistant, high strength, good washing, quick drying, non-iron performance, which is welcomed by domestic and foreign markets. Rotten technology research and application in recent years prevails in the textile printing and dyeing industry.

6. Woolen fabric printing At present, the printing of woolen fabrics to thin plain fabrics or tulle fabrics are mainly used to make most of the women's shirts, dresses, towels and skirts. Woolen textile printing in addition to direct printing, there are pulling printing, anti-printing and transfer printing. Wool blended fabrics printing also occupies a certain proportion, at present, wool fabrics embossed finishing is also quite popular, mainly used for worsted sweater.

7. Plain velvet printing diamond printing using the characteristics of screen printing on plain velvet printing, can get a special flash effect, in the daylight can send out a natural diamond general light.

8. Foam printing Fabric special printing varieties, foam printing is one of them. Foam printing is characterized by: a strong sense of three-dimensional, similar to artificial embroidery, soft touch, wear-resistant, washable, good fastness, elasticity, and can be widely used in tablecloths, curtains, tea towels, handkerchiefs, pillowcases, clothing, souvenirs and other aspects of tourism. It can not only be applied on natural fiber fabrics such as cotton, linen and silk, but also on man-made fiber fabrics.

9. Flocking printing Electrostatic flocking is a new technology is emerging in the textile industry. It is the use of high-voltage electrostatic field in the blank fabric above the planting of short fibers of a product. Flocking product process is simple, three-dimensional sense of strong, low-cost, so widely used in rubber, plastic, artificial leather, decorative products, especially for small quantities of tourism products show its incomparable superiority. In shoes and hats, children's clothing, trademarks, apparel decorated with flocking patterns, will make its style unique.

10. transfer printing transfer printing is relying on the sublimation of dyes and dye vapors on the fibers with the role of diffusion and affinity to complete the coloring effect of a printing process. Transfer printing is a more practical significance in the waterless processing of a printing and dyeing production methods. In addition to the absence of water, one of the main features is the small deformation of the paper, which makes it possible to print fine, multi-layered patterns and photographic images. The pattern pictures are transferred to the cloth realistically. Its effect is sometimes better than the general anti- and pull-dye printing.

In addition to the above ten common printing methods, there are a number of special printing methods, such as: aluminum transfer printing, photoluminescent printing, fluorescent printing, gold, silver powder printing, paint foam printing, color change printing, scented printing, diamond printing and pearlescent printing, etc., printing methods.

Plastic screen printing

Screen printing of plastic parts, plastic products is the second machining (or re-processing) in one. The so-called secondary processing is in plastic products after injection molding, and then a surface decorative treatment, such as: plastic plating, plastic spraying, plastic hot stamping, plastic screen printing. Plastic products so to carry out secondary processing, mainly by the performance of the plastic itself, such as its dyeing is relatively single, and the color of the sun resistance is poor. In order to make up for these shortcomings, improve the appearance of plastic products decorative, there is a need for secondary processing.

There are many kinds of plastic products, but in terms of screen printing method, sheet and flat body with plane screen printing method; can be expanded into a flat curved body with surface screen printing method; shaped products with indirect screen printing method. Plastic products solid resin, additives and molding methods, the difference in surface properties, especially the smoothness of the surface, polarity and static electricity and other issues, become the root cause of the failure of plastic screen printing.

1. Polyvinyl chloride plastic screen printing Polyvinyl chloride (PVC) in 1931 into industrial production. Polyvinyl chloride plastic has a bright color, not easy to rupture, acid resistance, alkali resistance, low price and other advantages. However, due to the manufacture of PVC plastic, adding some auxiliary materials, often with toxicity, so PVC products should not hold food. Polyvinyl chloride film colorful varieties, commercially available colorful plastic cloth, artificial leather, etc. are mostly polyvinyl chloride products.

2. ABS plastic screen printing ABS resin plastic, is a kind of engineering plastics. In recent years, widely used in televisions, calculators and other products, as well as many areas of the national economy.ABS plastic is acrylic eye, butadiene, styrene ternary **** polymer. As ABS plastic is a ternary **** polymer, so both the three groups of elements *** with the same characteristics, acrylene eye can make **** polymer chemical corrosion resistance and a certain degree of surface hardness; butadiene can make the polymer has a rubbery toughness; styrene can make the polymer has the characteristics of easy processing and shaping. Good impact strength and surface hardness within a certain temperature range, good dimensional stability. Most of the ABS resin in -40 ℃ temperature still has considerable impact strength, showing toughness, the use of its products in the temperature range of -40 ~ 60 ℃, ABS plastic high molecular weight, good physical properties, easy to process molding, printing suitability is better.

3. polyethylene, polypropylene plastic screen printing Polyethylene (PE) plastic: polyethylene plastic is widely used, can be extruded, injection molding process made of various finished products. Polyethylene's molecular system consists of a long chain of methylene, which contains a certain amount of side groups. The more and longer the side groups in the polymer chain, the less crystalline the polymer is. This means that the higher the density of polyethylene the less favorable it is for surface finishing. Polyethylene in a variety of solvents in不清, but in the temperature over 70 ℃, polyethylene can be a small amount of soluble in toluene, amyl acetate and other solvents. This property of polyethylene provides conditions for surface finishing. Available heating solvents to soak the plastic, so that the surface dissolves, destroying some of the crystallization to improve the adhesion of the ink film on the surface of the plastic. Fuming sulfuric acid, concentrated nitric acid, chromic acid and sulfuric acid mixture, at room temperature can slowly act on polyethylene; at 90 ~ 100 ℃ when sulfuric acid and nitric acid, can quickly destroy polyethylene; with potassium bipyridylate, sulfuric acid, distilled water mixture, at 70 ~ 75 ℃ to soak the polyethylene plastics, is conducive to enhance the adhesion of the ink film in the surface of the plastic.

Polypropylene (PP) plastic: polypropylene over the years is one of the important varieties of plastic development. Applicable to all molding methods. Can do a variety of pipes, a variety of boxes and films, fibers and so on. Industrial polypropylene has a high degree of spatial regularity, there is a high degree of crystallinity, such as the present index in the range of 89 ~ 95%, while containing a small amount of non-crystalline random structure and low crystallization of the three-dimensional block structure of the macromolecular chain. The solubility point is in the range of 170~175℃, and the glass transition temperature of isoconformational polymer is -13~0℃, while that of interconformational polymer is O℃. Concentrated nitric acid, fuming sulfuric acid can etch polypropylene, at higher temperatures, can be dissolved in aromatic hydrocarbons and chlorinated hydrocarbons, room temperature can only make it swell. Acids and esters also have some corrosion effect on it, with iso-polymer content increases, solvent resistance is also increased accordingly.

In general, polyethylene and polypropylene are high crystallinity, low surface tension, non-polar molecular structure of polymer materials. In their molecular structure, there is no such polar groups as carbon, carboxyl, hydroxyl, compared with polyethylene, polypropylene surface finishing easier.

4. Screen printing of plastic parts of electronic products electronic products, especially radio products such as radios, tape recorders, televisions, etc., for the appearance of the requirements are very high. Art designers on the appearance of the product decoration is very important, and China is currently used for the appearance of the decorative process is relatively small, restricting the thought process of the art staff, so that they can only through the size of the product, the use of a variety of lines, the plastic itself is limited to the color, to change the appearance of the product. After the development of plastic screen printing, for the decoration of electronic products has brought convenience, so in recent years a variety of domestic electronic products plastic screen printing has been widely used.

5. Plastic signage screen printing In recent years, plastic signage and plastic molding for screen printing graphic text decorative parts of the rapid development. Such as polyvinyl chloride rigid board (PVC board), polycarbonate, ABS, plexiglass, modified polystyrene plastic pressure parts for screen printing, has been widely used, achieved good decorative effect and economic benefits.

6. soft, hard plastic parts of the screen printing ① plastic hose screen printing. Plastic hose printing there are several methods, the main method for thermal transfer method. Thermal transfer method is the use of sublimation dye ink or other materials, the graphic first printed on the transfer paper, and then its and the substrate affixed together, from the back of the transfer paper heating, so that the dye sublimation of the paper surface and the graphic will be transferred to the substrate on the transfer. Plastic hose after surface treatment, by Sun gas, transfer paper from the hose and a piece of heated iron plate through the hose between the heated iron plate will transfer paper pushed to the hose, heating to complete the transfer. After transferring the hose into the drying device, the drying temperature is generally about 65 ℃. ②Screen printing of soft plastics. Soft plastic is mostly used to make toys, such as inflatable cartoon toys. The production is usually the first in the soft sheet plastic silkscreen pattern, and then cut, heat synthesized type. The thickness of the material used is generally 0.8 ~ 3.0 mm. If more than two colors of screen printing, most of the plastic will have stretch, the second color and the first color color registration error. This color error makes the goods lose its original value, can not be placed on the shelves as a qualified product. For this reason, multi-color printing can only be used to fix the soft plastics of the long press and no other way. Long table printing, the substrate to use adhesive fixed. It is worth noting that the toy printing must use the relevant standards of non-toxic, harmless ink. ③ rigid plastic products screen printing. Rigid plastic products have a rigid plate and molding two kinds of products. Tickets, signboards, instrument dials, cosmetic containers, etc. are made of rigid plastic.

7. Instrument panel screen printing The surface material of the panel may be metal, various plastics and paints, etc., the selection of suitable ink, screen printing on the panel of some text and graphics, indicating some of the functions of the instrumentation, but also beautify the panel. Screen printing text and graphics require clear, good adhesion, wear-resistant, but also requires a soft and elegant color tone, giving people a sense of beauty. Here we mainly discuss how to improve the quality of the panel with screen printing process.

8. Color polyester sign screen printing Polyester sign is the rapid development of new domestic signage varieties in recent years. Because it has bright colors, good decorative, easy to paste, simple manufacturing methods, low cost and other advantages, and therefore welcomed by the majority of users, and quickly in the high, medium and low-grade electronic products, household appliances, as well as cultural goods on the popularity of the application. At present, there are many specialized factories in China to produce this kind of label. However, because of these factories production process is in accordance with the needs of high-volume sign processing design, and thus for those varieties of polyester signage products, whether from the processing technology, or production costs, are unable to adapt. Introduced here is a use of screen printing method to print color polyester signage technology for small quantities, multiple varieties of color polyester signage producers reference.

Metal screen printing

Metal silkscreen printing a wide range of printing all kinds of signs root, panels, signs and metal molding products. Most of them are decorated with direct printing, there is not much difference in screen printing skills, just metal products are durable goods, the surface decorative requirements are higher, more durable, so more surface treatment before printing, such as surface coating, plating, anodic oxidation or mechanical hair (brigade grain, brushed) and so on. When printing, it is necessary to ensure the cleanliness of the surface, so be sure to wear gloves when working. If there are grease, fingerprints, dust and other stains on the treated surface, it must be washed away with solvents such as trichloroethylene, thinner and gasoline. In addition, according to the surface properties of the metal to choose the appropriate printing ink, such as amino baking varnish and epoxy baking varnish coating surface, to use amino and epoxy resin thermosetting ink; nitro varnish and other naturally drying type of coating, the available solvent evaporation or oxidation of drying type of ink, but we must be careful to use solvents or thinner to prevent damage to the lacquer surface, and in the printing of a layer of additional coating overlay varnish to improve the luster and protection of the entire surface; Metal plating surface can also be used to print heatset ink, but must pay attention to the plating layer and the difference in the thermal expansion coefficient of the metal, in order to control the heating temperature, in order to avoid the expansion coefficient of the difference leads to cracking of the plating layer; anodic oxidation of aluminum will form a layer of void uniformity of the oxidized layer (thickness of about 2 ~ 10μm), with a larger surface area, can improve the adhesion of the coating (ink), and, in addition, there is the adsorption of the dye's performance, can be used with diffusion ink or dip-dyeing. Dyeing signage with diffusion type ink or dip-dyeing method.

1. silkscreen corrosion signage corrosion signage is a traditional signage, varieties are used as instrument panels sandblasted oxidized paint filler signage, used as license plates, equipment numbers and a variety of machine tools and electrical nameplates corrosion of baking paint signage, used as a harsher industrial environment for the mechanical and electrical products of the copper plating front signage, used as instrumentation, electronic equipment surface decoration of the ceramic oxidation of the polar paint signage, as well as high-gloss signage. The signage on these signs used to have graphics on them. These signs on the graphics in the past are all by the liquid photopolymer (protein glue, bone glue, gelatin, polyvinyl alcohol glue, etc.) through the photochemical method. Although this method has the advantages of small graphic deformation, but there are many production processes low productivity, labor intensity and energy consumption and other defects. Screen printing method to show the graphics, can improve productivity several times, saving a lot of auxiliary materials and energy. The following to the reader to introduce specific corrosion signage graphic screen printing process.

2. Screen printing aluminum oxide dyeing signs Aluminum oxide signs, hard and smooth surface, wear-resistant and durable.

Aluminum oxide signs, panels closed by oxidation, the surface has a layer of oxide film, making the surface hard and smooth. Screen printing with general ink often poor adhesion, which should be especially noted. To solve this problem, we must first solve the loss of screen printing ink and operation problems. The use of aluminum oxide screen printing ink is the key to solving the problems of adhesion and firmness of the ink film in aluminum oxide screen printing. This ink is different from the general ink, it will be firmly attached to the aluminum plate, and also has good light resistance, is screen printing aluminum anodized signage ideal ink.

3. Screen printing convex-concave color aluminum signage convex-concave signage is characterized by paint in the concave, it is good resistance to abrasion, but also has a three-dimensional effect, mostly used for mechanical nameplates and company plaques, etc.. The traditional production method is to manually trace the paint on the corroded concave area (or inject the paint with an injection needle), and then trim it by hand to remove the residual paint on the edge. This method is not only time-consuming, inefficient, requiring operators to have skilled techniques, and the production of the signage is often the face of the word edges are not clear, handwriting deformation, the quality is very unstable. Therefore, only limited to the production of some small batch, the number of colors, quality requirements are not high, the pattern is very simple signage.

4. silkscreen sandblasted oxidized embedded paint aluminum signs silkscreen sandblasted oxidized embedded paint signage process, is a traditional signage production process. These products are silver-white in color, with high surface hardness and good abrasion resistance.

5. silkscreen wood from the aluminum oxide signage water-white aluminum oxide signage is a new type of matte surface signage recently appeared in China. The appearance of this sign is milky white, smooth surface finish, no bump, with heat and humidity, salt spray resistance, mold resistance, but also has a strong resistance to sunlight, abrasion resistance, resistance to organic solvents and other characteristics, for the need for frequent wiping of the machine tool and the work of the machine in the environment under the more adverse conditions. More valuable is the screen printing water white aluminum oxide sign production process is less, high efficiency, basic no "three wastes" produced, its manpower, energy (including water, electricity) consumption of no more than one-third of the traditional corrosion of the sign.

6. Aluminum oxidation by printing colorful signs Aluminum plane anodic oxidation signs is one of the varieties of signs, more widely used. It has a beautiful, bright, high hardness, wear resistance and other characteristics. The previous process for the aluminum plate material, mechanical polishing, chemical polishing, oxidation; indirect law screen plate, zinc barium white thick paint plus alkyd varnish for protection printing; with dye paste for coloring. This process, whether making screen plate or dyeing, there are more materials, complex processes, low print resistance, poor resolution, high cost disadvantages. In the existing technical conditions, the preparation of a set of relatively simple procedures, good quality, high efficiency of the new process is possible. The new process to non-toxic diazo photopolymer direct method of screen printing plate, practice has proved that the plate can achieve fast, high resolution, high print resistance, less material requirements. And can be printed to protect the paint, dyeing, back to the printing material process is combined into one, that is, homemade water-based dyeing printing material, direct dyeing, successive color sets, do not need a color cylinder. Thus greatly simplifying the entire process and operation procedures, so that the plane oxidation dyeing sign has a new method.

7. High-gloss three-dimensional embossed aluminum signs With the continuous development of production technology, people's material and spiritual living standards, people are not only more and more demanding on the functionality of the product, but also on the product styling, staging, and put forward higher requirements. Especially with the development of domestic and foreign market economy, the continuous expansion of foreign trade, people on the function of the product and the quality of the appearance of the requirements are also higher and higher. In order to improve the market competitiveness of products, high-grade products of high-gloss three-dimensional relief signs have been widely used.

8. Screen printing plating plaque plaque is a product produced by many sign factories. Plaque is mainly metal-based materials, it requires solemn, obvious, decorative. In the traditional metal plaques, especially in brass, corrosion of the word, note black lacquer square plaque is most common. With the continuous change of people's aesthetic point of view, the gradual development of the commodity economy, the quality of the plaque also has new and different requirements. Due to the introduction of screen printing technology in the plaque industry, not only promote the development of screen printing technology, but also to the plaque industry to develop new products provide the technical means. Silk-screen method of new plating plaque is a combination of signage plating, silk-screen process. It is the basic method of screen printing on a copper plate with the law of plain text graphics, ink layer to protect the cover without graphics parts, graphics of the silver parts of the copper, nickel, chromium system plating, and then mechanical shaping, protection processing and become.

9. Imitation of metal etching screen printing Imitation of metal etching printing products, in the visual effect of metal etching. In order to achieve the above effect, the surface of the substrate should have a mirror-like luster. In the substrate printed with transparent ink into a concave-convex ink overlay, the formation of rough glass-like surface, with a strong contrast of the rough surface of the combination, so that the printing surface is concave, its mirror surface is produced on the convex printing effect. The stronger the contrast, the better the imitation etching effect. The effect of concave and convex is proportional to the thickness of the ink overlay. The ink has a high solid content, so the effect is better if a low mesh printing plate is used. This technique originally used a gel ink with an acrylic emulsion (50% solids), which is heat-treated at 180°C after drying. Therefore, the substrate is limited to heat-resistant metal and glass, etc., and hard plastics and paper cannot be used. Because of the use of highly viscous gel inks such as acrylic emulsions and other reasons such as the temperature during operation, the stability of ink viscosity is extremely poor, and the quality of the product fluctuates greatly. Since the use of UV drying inks in screen printing, there has been a great deal of flexibility in printing processes and techniques. UV ink is 100% curing type, UV irradiation 3 ~ 5 seconds ink can be hardened, during which the surface temperature is about 100 ℃ or so. If the use of water-cooled UV irradiation machine, the temperature can be reduced to about 60 ℃, so that the types of substrates will be increased, can be printed on aluminum foil paper with a mirror-like luster, evaporated paper, evaporated vinyl chloride soft sheet, evaporated polyester soft sheet and other materials.

10. screen printing conical dial screen printing conical dial method: the first screen printing to the transfer rubber, and then the conical parts mounted to the homemade special fixture, and then rolled from the transfer rubber, so that the graphic will be transferred to the conical parts.

11. Imitation of porcelain oxidation sign Imitation of porcelain anodic oxidation sign surface is enamel-like, soft luster, with good resistance to resistance, high hardness and abrasion resistance, good thermal insulation and electrical insulation, good covering ability and ideal adsorption capacity, is the instrumentation, especially high-grade machine decoration of the best products. However, there is chromium-containing gas escaping from the production process, so the operation equipment should be equipped with better air extraction and ventilation equipment to avoid poisoning. Imitation of porcelain oxidation signage surface pretreatment with silkscreen sandblasting oxidation embedded paint signage is basically the same, just imitation of porcelain oxidation corrosion signage generally do not need to carry out chemical polishing, and direct oxidation. Imitation of porcelain oxidation corrosion signs, imitation of porcelain oxidation dyeing signs and imitation of porcelain oxidation printing signs punching process are generally carried out before oxidation. Imitation of porcelain oxidation corrosion signage oxidation process and sandblasting oxidation embedded paint process is the same, imitation of porcelain oxidation dyeing signage process and silkscreen aluminum oxidation color signage is no different.

Ceramics screen printing

Ceramics on the pattern decoration, has long been using the method of blowing spray, hand-painted, rubber stamped, as well as copper and lithographic printing with the transfer of decal paper and other methods. In recent years, with the application of screen printing in the ceramic industry, ceramic decorative patterns on the more three-dimensional, fired enamel is very thick and very bright colors, it looks as if depicted with magnetic paint. The pattern is more fine than the general use of blowing spray method, the production efficiency has increased a lot. Because of the silk screen on the decoration of ceramic ware has many of the above advantages, so its application range is wider than day by day.

Glass screen printing

Glass screen printing, is the use of screen printing plate, the use of vitreous enamel, decorative printing on glass products. Vitreous enamel, also known as glass ink, glass printing material, it is by the coloring material, linking material mixed and stirred from the paste printing material. The coloring material is composed of inorganic pigments, low melting point flux (lead glass powder); linker in the glass silkscreen printing industry is commonly known as Lipan oil. Printed glass products, to be put in the furnace, with a temperature of 520 ~ 600 ℃ for firing, printing to the glass surface of the glaze in order to solidify on the glass, forming colorful decorative patterns. If the screen printing and other processing methods and use, will get more ideal results. For example, the use of polishing, engraving, etching and other methods before or after printing on the glass surface processing, can double to improve the printing effect.

1. glass products etching screen printing For a long time, the etching of glass products decorative, is in the glass surface hot coating wax layer and other solidifying materials, as a corrosion-resistant layer, and then in the coating with a needle, knife and other engraved pattern pattern, revealing the surface of the glass, and then on this part of the hydrochlorofluorocarbon acid for corrosion. This process continues to this day there are manufacturers to apply, but its processing methods time-consuming, laborious, inefficient. Silkscreen etching process, so that the etching of glass products decorative become simple, time-saving, labor-saving. Glass etching screen printing, thermal printing and cold printing two methods. Thermoplastic etching screen printing, is the paraffin, asphalt, stearic acid and other formulated adhesive, add a small amount of corrosion resistant powder modulation into corrosion-resistant printing material, through the thermal printing screen version, according to the design pattern, the printing material scraped to the surface of the glass, the formation of corrosion-resistant film. Resist film on the part of the exposed glass, that is, the need to etch the pattern. Etching using chlorofluorocarbon acid, etching should be rinsed off with boiling water printed on the glass resist layer. Glass silkscreen etching, you can also use cold printing method. Resist printing material can use special asphalt paint plus resist powder, you can also buy commercially available resist ink. Printing is completed, until the resist film is completely dry, it can be hydrofluoric acid corrosion. Thermal printing is suitable for two-way continuous, four-way continuous pattern pattern of etching, cold printing to adapt to the etching of a separate pattern.

2. Glass ice silkscreen Ice is commonly known as orange peel pattern, it is actually very small low melting point glass particles. This fine glass particles, high lead content, colored and colorless two kinds of color, colored hue of red, yellow, blue, green, white, etc., can also be formulated with intermediate tones. Silk-screened ice decoration, elegant and generous, mostly used in architectural glass decoration and arts and crafts glass decoration, such as high-level glassware, lamps and other decorative. Silk-screened glass ice decoration, is the first in the glass surface screen printing colored or colorless glass frit layer (flux), and then ice glass particles scattered in this layer of glass frit layer. Through the 500 ~ 590 ℃ sintering, so that the glass surface of the frit layer and ice particles layer **** fusion and produce relief effects. Such as silkscreen on the glass is colored frit, and micro ice is transparent, through high temperature *** fusion, the glass ice pattern parts of the frit layer decoloration, and in the glass surface to form a tinted, bulging transparent relief pattern.

3. The glass of sand silkscreen sand is in the products on the glass, adhering to a certain size area of glass glaze powder, after 580 ~ 600 ℃ high-temperature baking, so that the glass glaze coating melted on the surface of the glass, and shows a different color with the main body of the glass of a decorative method. Adhesion of glass enamel powder, available brush brush, can also be rolled with a rubber roller coating. Through the screen printing process, you can get the sandblasted surface of the floor pattern. The method is: on the surface of the glass products, screen printing a layer of pattern pattern formed by the melt-resistant. To be printed on the pattern pattern air-drying, and then sandblasted processing. Then after high-temperature baking, there is no pattern pattern at the sand surface will melt in the glass surface, and silk screen pattern place due to the role of the fusible resist, masked in the pattern on the sand surface can not be fused on the glass surface. After baking, the transparent floor pattern will appear through the translucent sand surface, forming a special decorative effect. Sand screen printing frit, composed of iron trioxide, talcum powder, clay, etc., with a ball mill grinding, fineness of 350 mesh, screen printing with adhesives before blending.

4. Glass screen printing ion exchange coloring By exchanging silver and sodium ions in the glass, and then make its reduction, into a metallic gel, you can get coloring glass. In the transparent glass plate with silver ions containing screen ink only part of the coloring part of the printing, firing and washing, only the printing part of the yellow into brown. The color tone and concentration will change depending on the firing conditions. Since there is no reflection difference between the uncolored part and the colored part, there is no sense of unnaturalness at all, just as if the glass was fused and colored. The coloring of text and markings on glass, the anti-heat treatment of automobile rear window glass, and the brown coloration of the simple scale used for comparative experiments are obtained by this method. This decorative process of screen printing ink (printing material) is mostly composed of silver carbonate, copper sulfate (burnt powder), iron dioxide, talcum powder, etc., with a small amount of zinc powder as a catalyst.

5. Screen printing contact control panel In the design of the microwave oven temperature program, the use of a combination of switches with a microcomputer. This switch is different from the usual mechanical switch, is printed on a glass plate switch, no movable parts, there is no convex and concave, very smooth, easy to decontaminate, and can be switched on and off by hand. The surface of this control panel is covered with a conductive film, which is surrounded by screen-printed ceramic-based inks for decoration and text display. The advantages are resistance to mechanical wear and tear, chemical resistance, and easy decontamination. In addition, the design in order to make the glass coloring, can be printed on the back of the organic paint, because the back can not be direct contact, durability, ink selection is also larger.

6. glass surface matting screen printing glass surface matting ink (produced in Belgium), screen printing plate printed on soda-lime glass, a few minutes after the wash, the effect is like tea-colored glass. Usually use fluorine acid when etching the glass, there is a certain degree of danger, with this ink does not contain strong acid, the operation is simpler, its matting effect and etching have the same flavor.

7. Electrothermal demisting device screen printing In order to prevent automotive rear window glass condensation of water vapor, printing electrothermal demisting device more and more. This screen printing method is in the smooth glass to the silver paste coated into lines, and in the glass bending treatment at the same time as the firing. When the rear window blurs and fogs up, the lines are allowed to heat up by passing an electric current, raising the temperature of the glass surface and removing water vapor. Instead of using a manual switch when this electric defogging device is energized, some cars are automatically energized and de-energized. The sensor of this automatic device is a jagged electrode screen-printed on a sheet of glass, and then covered with a layer of moisture-sensitive body, the use of humidity of the variable ratio of the automatic control of power-on and power-off.

8. Liquid crystal display element screen printing liquid crystal digital display element, is the interval of about 10μn. The two thin glass pieces of sealing up around the perimeter, injected into the liquid crystal, sealing the injection port made. On the surface of these two pieces of glass, screen printing was "8" shape of the transparent electric conduction strand, the "8" word consists of seven parts, can partially increase the voltage to display (0 ~ 5) of the number. The process of making this "8" pattern is firstly to screen print only the part of the "8" shape with acid-resistant ink on the field glass with the whole electric conduction strand, and then to remove the unprinted part of the conduction strand by acid etching. Screen printing in the manufacture of electronic products in the production process of electronic products, screen printing has become an essential means of technology. Such as product shell decoration, printed circuits, thick-film integrated circuits, solar cells, electricity; frustration, capacitors, piezoelectric components, photosensitive components, thermal components, liquid crystal display components, etc., in the production process are used to varying degrees of screen printing process.

Other screen printing methods