What our country applies the Screen printing machine is widespread is the electronics industry. Ceramic applique industry. Textile printing profession. In recent years, the packing decoration, the advertisement, the handbill poster notice product label and so on also massively used the silk-screen press. The silk-screen printing machine has the following characteristic approximately:
1. Screen printing machine is not accepted for printing the size and the shape limit. Generally printing can only carry on the plane, but silk India not can only print in the plane, but can also carries on printing in the special shape in thing and on the concave-convex surface.
2. Printing way nimble diverse. The silk-screen printing with even, concave, raised printing is the same, may carry on the industrialization the large scale production
3. Is suitable each type the printing ink. The silk-screen printing has may use any coating to carry on printing the characteristic, like greasiness, the river character, the synthetic resin, the powder body and so on each kind of printing ink may use.
You're welcome to visit Shaoxing Sangao Screen Printing Machine Co., Ltd blog to get more information and to interact with us at http://screenprinter.bokee.net
More article：
How to choose and use the screen printing ink
Screen Printing Principle
Non-woven fabric of conventional screen printing
The new method of screen printing
2/25/2009
2/18/2009
Screen printing machine print nameplate
Can choose to hand-printed signs are printed can also choose to flat screen printing machine. Both have their own respective merits. However, at present, the required volume makes use of the machine than by hand. The following is a flat screen printing machine label printing Notes:
1. Screen Printing signage network from the size of control
Screen Printing signs, panels, and tags; there is no net from the No, not too much from the net line. Screen Tension is usually large, the best network from the small. Such lines are printed scratch contact bounce time. General laws are micro-version of net-shaped screen printing distance is 0.5 ~ 1mm, small screen printing version of the network distance is 2 ~ 3mm, medium-sized version of the network from the network are 3 ~ 5mm, Large Screen Printing edition (such as 1m × 0.8m) of network from the get 5 ~ 7mm.
2. Adjust the use of screen printing ink
Ink used to adjust thin consistency, but also full uniform mixing and to eliminate air bubbles, adjust better to use.
3. Screen Printing signs, panels scraper use
Require a sharp scraper, flat, hard, shell, and no gap, solvent. Requirements are in order to tip a bit more clearly printed; scraper can be used to check whether the glass-ping, such as injustice, it is necessary to removed; scraper hardness in general often 70 ° medium hardness; require flexibility in order to avoid are a little uneven on the Indian poor, not allowed to have gaps where they are needed most; also requested to solvent, so that is not easy damaged blade.
You're welcome to visit Shaoxing Sangao Screen Printing Machine Co., Ltd blog to get more information and to interact with us at http://screenprinter.bokee.net
1. Screen Printing signage network from the size of control
Screen Printing signs, panels, and tags; there is no net from the No, not too much from the net line. Screen Tension is usually large, the best network from the small. Such lines are printed scratch contact bounce time. General laws are micro-version of net-shaped screen printing distance is 0.5 ~ 1mm, small screen printing version of the network distance is 2 ~ 3mm, medium-sized version of the network from the network are 3 ~ 5mm, Large Screen Printing edition (such as 1m × 0.8m) of network from the get 5 ~ 7mm.
2. Adjust the use of screen printing ink
Ink used to adjust thin consistency, but also full uniform mixing and to eliminate air bubbles, adjust better to use.
3. Screen Printing signs, panels scraper use
Require a sharp scraper, flat, hard, shell, and no gap, solvent. Requirements are in order to tip a bit more clearly printed; scraper can be used to check whether the glass-ping, such as injustice, it is necessary to removed; scraper hardness in general often 70 ° medium hardness; require flexibility in order to avoid are a little uneven on the Indian poor, not allowed to have gaps where they are needed most; also requested to solvent, so that is not easy damaged blade.
You're welcome to visit Shaoxing Sangao Screen Printing Machine Co., Ltd blog to get more information and to interact with us at http://screenprinter.bokee.net
2/11/2009
Screen printing operation, the quality problems and treatment
1 lines of distortion
Excessive number of screen printing, silk screening template induced relaxation; positioning loose network version with the substrates from the change; scraper and substrates between the angle wrong, or forced uneven; printed material consistency before thinning or too dry; rework the work piece the printing surface by the cleaning solvent after the stem at the end of play on the screen and so on.
2 patterns or lines fuzzy
India is expected to deploy too thin, scratch force India is too large; printed material transfer was uneven (printed material solvent dispersion Unevenness); arrangements will be net after net die solvent or dry cleaning agent, or when the surface of the work piece rework cleaning agent has yet to dry or clean; the first scratch and India, the Indian force feed block is too large, so that a small amount of printed material out of the mesh; printing scraper Movement (mobile) speed in the effective area substrates with a similar amount, half-way stop or repeat printing, etc.; printed material fineness and the selected wire mesh do not deserve.
3 pattern line edge burr, and the gap, cam, etc.
Unclean surface substrates, and has oil; printed materials have been sticky, net die not have dirt removed, printed material particles, high mesh wire Netcom, however; too fast drying silk screening, silk screening workplace ventilation ; quick-drying material and India failed to block, resulting in networks; scraping India forced uneven, large or small; substrates surface formation.
4 Ma points
India expected to have sticky, and with impurities, plugging holes; or printed materials have been sticky, scraping printed inadequate; printed material deployment mature enough, the residual air bubbles printed material does not run the net, after the bubble screen in the substrates on Zhanhua cause; substrates surface dirty, dust, etc., printing when forced improper light, irregular or scraping India and inadequate; substrates printed materials yet to dry, the dust caused by the storage place; printed material suitable conditions, the network version and the distance between substrates is too large; Prepress Screen not thoroughly cleaned.
5 silk screening in viscose-Screen
Scraping angle version with the substrates have problems between them, rather than a line contact, but contact with a small plane; screen with small distance between the substrates, or Network version of the tension; screen printing, the embossing force is too large Mexico thick sticky networks; printed material is too thick and so on.
6 solutions
Careful analysis of the impact of the quality of the reason why, for reasons arising to solve, and those non-Indian operated scrape quality problems arise, such as Stretching the problem, the best distance problem, the production of silk screen template problem, surface treatment, as well as printed material matching and so on will affect the screen quality is good or bad.
You're welcome to visit Shaoxing Sangao Screen Printing Machine Co., Ltd blog to get more information and to interact with us at http://screenprinter.bokee.net
Excessive number of screen printing, silk screening template induced relaxation; positioning loose network version with the substrates from the change; scraper and substrates between the angle wrong, or forced uneven; printed material consistency before thinning or too dry; rework the work piece the printing surface by the cleaning solvent after the stem at the end of play on the screen and so on.
2 patterns or lines fuzzy
India is expected to deploy too thin, scratch force India is too large; printed material transfer was uneven (printed material solvent dispersion Unevenness); arrangements will be net after net die solvent or dry cleaning agent, or when the surface of the work piece rework cleaning agent has yet to dry or clean; the first scratch and India, the Indian force feed block is too large, so that a small amount of printed material out of the mesh; printing scraper Movement (mobile) speed in the effective area substrates with a similar amount, half-way stop or repeat printing, etc.; printed material fineness and the selected wire mesh do not deserve.
3 pattern line edge burr, and the gap, cam, etc.
Unclean surface substrates, and has oil; printed materials have been sticky, net die not have dirt removed, printed material particles, high mesh wire Netcom, however; too fast drying silk screening, silk screening workplace ventilation ; quick-drying material and India failed to block, resulting in networks; scraping India forced uneven, large or small; substrates surface formation.
4 Ma points
India expected to have sticky, and with impurities, plugging holes; or printed materials have been sticky, scraping printed inadequate; printed material deployment mature enough, the residual air bubbles printed material does not run the net, after the bubble screen in the substrates on Zhanhua cause; substrates surface dirty, dust, etc., printing when forced improper light, irregular or scraping India and inadequate; substrates printed materials yet to dry, the dust caused by the storage place; printed material suitable conditions, the network version and the distance between substrates is too large; Prepress Screen not thoroughly cleaned.
5 silk screening in viscose-Screen
Scraping angle version with the substrates have problems between them, rather than a line contact, but contact with a small plane; screen with small distance between the substrates, or Network version of the tension; screen printing, the embossing force is too large Mexico thick sticky networks; printed material is too thick and so on.
6 solutions
Careful analysis of the impact of the quality of the reason why, for reasons arising to solve, and those non-Indian operated scrape quality problems arise, such as Stretching the problem, the best distance problem, the production of silk screen template problem, surface treatment, as well as printed material matching and so on will affect the screen quality is good or bad.
You're welcome to visit Shaoxing Sangao Screen Printing Machine Co., Ltd blog to get more information and to interact with us at http://screenprinter.bokee.net
2/09/2009
Screen printing what issues should pay attention before?
① printing establishments clean precision screen printing with the printing requirements of continuous improvement, especially printed circuit boards, electrical components, such as high-precision printing on the environment also put forward higher requirements. General requirements for the printing workshop, and plate-making workshop to be clean, no dust in air, otherwise, will affect the printing quality. Require a higher accuracy of the printing workshop, if necessary, installation of air purification equipment in order to maintain printing, plate-making workshop clean.
② temperature and humidity of spring, summer, autumn and winter seasons the temperature and humidity changes in a larger impact on the printing accuracy of a relatively large, especially multi-color overprint, affecting more obvious, therefore, request the indoor humidity, temperature should be relatively stable, Seasonal changes in accordance with appropriate adjustments to the indoor temperature and humidity to ensure the accuracy of the printing size.
③ fully understand the nature of substrates as a result of the application of screen printing a very extensive variety of print materials, and substrates of different shapes, in the printing before the different requirements according to the selection of appropriate inks and solvents as well as the scraper and so on.
You're welcome to visit Shaoxing Sangao Screen Printing Machine Co., Ltd blog to get more information and to interact with us at http://screenprinter.bokee.net.
② temperature and humidity of spring, summer, autumn and winter seasons the temperature and humidity changes in a larger impact on the printing accuracy of a relatively large, especially multi-color overprint, affecting more obvious, therefore, request the indoor humidity, temperature should be relatively stable, Seasonal changes in accordance with appropriate adjustments to the indoor temperature and humidity to ensure the accuracy of the printing size.
③ fully understand the nature of substrates as a result of the application of screen printing a very extensive variety of print materials, and substrates of different shapes, in the printing before the different requirements according to the selection of appropriate inks and solvents as well as the scraper and so on.
You're welcome to visit Shaoxing Sangao Screen Printing Machine Co., Ltd blog to get more information and to interact with us at http://screenprinter.bokee.net.
2/04/2009
Screen Printing and Packaging
Screen Printing and Packaging
Metal packaging products, many different types, different physical properties, uses a different surface, different requirements will, therefore, metal packaging products in screen printing to be different before the pre-press processing.
Pre-treatment methods are mainly degreasing, polishing, mechanical oxidation treatment, spray painting, surface coating, etc.. Pre-press deal with the main role is to remove the metal packaging products processing defects and improve the aesthetic effect of the surface and at the same time to change the metal surface finish and improve Printability.
Degreasing of metal packaging products in the screen printing of a pre-treatment process. The main purpose is to remove the surface of metal products oil, gray trace. Apart from the basic approach is, according to oil type, choose the appropriate solvent or cleaning fluid, metal packaging products for surface cleaning. Commonly used solvents are organic solvents or alkaline solution. Cleaning fluid mainly by the sodium phosphate, sodium carbonate, such as the composition of liquid soap.
Polishing is also a metal packaging products in front of a screen printing process. The main purpose is to remove metal surface rough, uneven, scratches, bumps and other defects, to improve metal surface brightness.
Pre-polishing is commonly used methods of treatment. Polishing can be divided into mechanical polishing, chemical polishing and electropolishing.
Pre-oxidation process is the production of aluminum plate surface treatment methods commonly used.
Oxidation is defined as a certain concentration of the acid solution, current density through the adjustment of the metal as the anode oxidation treatment process. By the oxidation treatment of metal materials can generate a hard texture, chemical properties of a stable oxide layer. Generated oxide layer is characterized by: dense oxide layer with pores, an increase of the adhesion of the ink; oxide layer with better insulation, suitable for the production of a variety of sign occasions charged; oxide layer can improve the surface hardness of metallic materials , an increase of wear resistance. Oxidation treatment in general the use of sulfuric acid solution, chromic acid solution and oxalic acid solution. The use of oxalic acid oxidation solution available to handle more of the oxide layer caused by encryption.
You're welcome to visit Shaoxing Sangao Screen Printing Machine Co., Ltd blog to get more information and to interact with us at http://screenprinter.bokee.net
Metal packaging products, many different types, different physical properties, uses a different surface, different requirements will, therefore, metal packaging products in screen printing to be different before the pre-press processing.
Pre-treatment methods are mainly degreasing, polishing, mechanical oxidation treatment, spray painting, surface coating, etc.. Pre-press deal with the main role is to remove the metal packaging products processing defects and improve the aesthetic effect of the surface and at the same time to change the metal surface finish and improve Printability.
Degreasing of metal packaging products in the screen printing of a pre-treatment process. The main purpose is to remove the surface of metal products oil, gray trace. Apart from the basic approach is, according to oil type, choose the appropriate solvent or cleaning fluid, metal packaging products for surface cleaning. Commonly used solvents are organic solvents or alkaline solution. Cleaning fluid mainly by the sodium phosphate, sodium carbonate, such as the composition of liquid soap.
Polishing is also a metal packaging products in front of a screen printing process. The main purpose is to remove metal surface rough, uneven, scratches, bumps and other defects, to improve metal surface brightness.
Pre-polishing is commonly used methods of treatment. Polishing can be divided into mechanical polishing, chemical polishing and electropolishing.
Pre-oxidation process is the production of aluminum plate surface treatment methods commonly used.
Oxidation is defined as a certain concentration of the acid solution, current density through the adjustment of the metal as the anode oxidation treatment process. By the oxidation treatment of metal materials can generate a hard texture, chemical properties of a stable oxide layer. Generated oxide layer is characterized by: dense oxide layer with pores, an increase of the adhesion of the ink; oxide layer with better insulation, suitable for the production of a variety of sign occasions charged; oxide layer can improve the surface hardness of metallic materials , an increase of wear resistance. Oxidation treatment in general the use of sulfuric acid solution, chromic acid solution and oxalic acid solution. The use of oxalic acid oxidation solution available to handle more of the oxide layer caused by encryption.
You're welcome to visit Shaoxing Sangao Screen Printing Machine Co., Ltd blog to get more information and to interact with us at http://screenprinter.bokee.net
2/02/2009
How to choose and use the screen printing ink
How to choose and use the screen printing ink
As the screen printing process uses a wide range of inputs less difficult for other printing methods of printing substrates, using screen printing, silk screen process and therefore the last decade have developed rapidly. Screen printing process brought about by the characteristics of such a fine, in addition to the diversification of printing equipment, there are multi-functional, multi-purpose screen printing inks. Therefore the correct choice and use of silk screen printing ink than other alternative methods (gravure, letterpress, lithography, soft version) is all the more important. The choice of screen printing ink printing ink and the use of wire and other types of ink are the same as pigments, resins, solvents, additives mixed grinding together.
1. By dry methods can be divided into: steam dry type - through solvent evaporation method to make ink film adhesion. Oxidative polymerization type - oxidation reaction through the ink film adhesion method. Second liquid reaction type -through the two-component chemical reaction so that the ink film adhesion method. UV-curing type, through ultraviolet radiation caused by a chemical reaction so that the ink film adhesion method. Different drying methods can be brought about by the printing ink after the ink gloss film different, different resistance (mechanical resistance, chemical resistance, weather-resistant performance), using different drying equipment, resulting in different costs, and thus the user need to choose carefully.
2. According to the type of ink can also be expected to link into many types, but different ink manufacturers of the selected resin is different from the general category can be divided into epoxy resin, polyurethane type, polyester, vinyl, acrylic, rubber category and so on. Only clear substrates of different materials in order to choose different types of ink resin in order to avoid errors caused by ink adhesion adverse consequences. Not clear material substrates, preferably by printing test before deciding on the choice of ink.
3. Drawbench: The reason is that high viscosity, fast drying, ink and solvent used in resin caused by mis-match, you should use a suitable solvent, appropriate adjustment or replacement of the fine ink viscosity.
4. Migration, faded: The reason is that improper use of pigment ink, especially a large number of plasticizers soft membrane, more susceptible to migration, should use the appropriate ink.
5. White or printed there is mist: The reason is that diluent containing water, ambient air humidity printing, or printing ink in itself bad. Due to the printing surface drying, the solvent evaporation will absorb the surrounding heat, causing water vapor partial solidification in the ink inside the membrane or surface of cause and should therefore select the appropriate drying rate or reduce the space humidity, or the replacement of good ink. Curing agent, driers, stressed the use of Mexican oil. 1. Curing agent, driers should be based on the proportion of accurate use to add, otherwise the ink will increase the crust, resulting in an undesirable effect adhesion. 2. Transfer ink oil normally used for gold, silver ink production, increase the transparency of ink film, ink film gloss enhanced membrane mask, such as the role of Mexico, Mexico's accession to transfer the oil, after adding an appropriate proportion should be thinner to prevent adverse effects printing.
You're welcome to visit Shaoxing Sangao Screen Printing Machine Co., Ltd blog to get more information and to interact with us at http://screenprinter.bokee.net
As the screen printing process uses a wide range of inputs less difficult for other printing methods of printing substrates, using screen printing, silk screen process and therefore the last decade have developed rapidly. Screen printing process brought about by the characteristics of such a fine, in addition to the diversification of printing equipment, there are multi-functional, multi-purpose screen printing inks. Therefore the correct choice and use of silk screen printing ink than other alternative methods (gravure, letterpress, lithography, soft version) is all the more important. The choice of screen printing ink printing ink and the use of wire and other types of ink are the same as pigments, resins, solvents, additives mixed grinding together.
1. By dry methods can be divided into: steam dry type - through solvent evaporation method to make ink film adhesion. Oxidative polymerization type - oxidation reaction through the ink film adhesion method. Second liquid reaction type -through the two-component chemical reaction so that the ink film adhesion method. UV-curing type, through ultraviolet radiation caused by a chemical reaction so that the ink film adhesion method. Different drying methods can be brought about by the printing ink after the ink gloss film different, different resistance (mechanical resistance, chemical resistance, weather-resistant performance), using different drying equipment, resulting in different costs, and thus the user need to choose carefully.
2. According to the type of ink can also be expected to link into many types, but different ink manufacturers of the selected resin is different from the general category can be divided into epoxy resin, polyurethane type, polyester, vinyl, acrylic, rubber category and so on. Only clear substrates of different materials in order to choose different types of ink resin in order to avoid errors caused by ink adhesion adverse consequences. Not clear material substrates, preferably by printing test before deciding on the choice of ink.
3. Drawbench: The reason is that high viscosity, fast drying, ink and solvent used in resin caused by mis-match, you should use a suitable solvent, appropriate adjustment or replacement of the fine ink viscosity.
4. Migration, faded: The reason is that improper use of pigment ink, especially a large number of plasticizers soft membrane, more susceptible to migration, should use the appropriate ink.
5. White or printed there is mist: The reason is that diluent containing water, ambient air humidity printing, or printing ink in itself bad. Due to the printing surface drying, the solvent evaporation will absorb the surrounding heat, causing water vapor partial solidification in the ink inside the membrane or surface of cause and should therefore select the appropriate drying rate or reduce the space humidity, or the replacement of good ink. Curing agent, driers, stressed the use of Mexican oil. 1. Curing agent, driers should be based on the proportion of accurate use to add, otherwise the ink will increase the crust, resulting in an undesirable effect adhesion. 2. Transfer ink oil normally used for gold, silver ink production, increase the transparency of ink film, ink film gloss enhanced membrane mask, such as the role of Mexico, Mexico's accession to transfer the oil, after adding an appropriate proportion should be thinner to prevent adverse effects printing.
You're welcome to visit Shaoxing Sangao Screen Printing Machine Co., Ltd blog to get more information and to interact with us at http://screenprinter.bokee.net
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