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Stainless steel screen printing
There are many methods of processing on stainless steel surfaces, which can be roughly divided into two types. One is to treat stainless steel with surface gloss, and to use art processing to form a pattern using luster contrast; the other is to assign color to the composition of patterns. Art processing. Typical examples of the use of the screen printing method include etching and spray painting.
Etching processing method is to screen the acid-proof protective film on the stainless steel surface by screen printing, and then etch it with ferrous chloride solution to form an artistic pattern. The spray color method sprays pigment particles after screen printing to form a pear-like surface and form an artistic pattern.
In recent years, in order to adapt to the diversification of the use of stainless steel and higher and higher artistic requirements, the “color art†processing method with color has been developed and has become the mainstream in this field. Among the methods for imparting the color of stainless steel include a method of performing firing after screen ink printing and a chemical coloring method.
The process of chemical coloring of stainless steel products is: stainless steel products → screen printing → oxidation coloring → alkali treatment → finished products.
The etching art process of stainless steel products is: stainless steel products → silk screen → etching → alkali treatment → oxidation coloring → finished products.
The process of spray painting of stainless steel products is: stainless steel products → silk screen → etching → alkali treatment → screen printing → oxidation coloring → alkali treatment → finished products.
The stainless steel chemical coloring method does not use pigments and dyes, but soaks the stainless steel in a warm concentrated chromium sulfate solution to perform chemical coloring, which is characterized by good resistance to food. The ink used in this processing method must have a very strong acid resistance, and UV curing inks having special properties suitable for the processing process are generally used.
Fifth, the silk screen of the light reflector
The light reflector is a kind of silk screen that is irradiated by the headlights or other lights of a car and the light is reflected by the irradiated object in the direction of the light source without being affected by the angle of irradiation or the weather. Reflective is a hollow glass particle with a diameter of about 40 μm, with a reflective layer at the other heart. Its flexible sheet-like support has an adhesive layer and a release layer on its surface. A reflection layer is generally provided on an acrylic resin plate, and a reflection layer is formed by adding a certain amount of hollow glass particles with a transparent resin and printing by a screen printing method. When printing, we must carefully select the mesh number, hole width (opening degree), and the type of hollow glass particles. The hollow glass particles are regularly arranged.
This type of printing is used for various signs, commercials, etc. so that it can be confirmed in dark places. In addition, printing for road signs, air navigation signs, lifesaving appliances, security helmets, etc. can also be considered.
Six, with silk screen printing transfer aluminum
Gorgeous and beautiful, bright aluminum color hot stamping through the hot stamping machine, on the substrate, its beautiful color has won wide appreciation. However, sometimes the bronzing machine will also encounter products that are not suitable for mechanical bronzing. However, the customers are stubbornly not using screen printing gold. In the dilemma, the unique screen printing plate transfer galvanized aluminum shows its superiority. Hot stamping machine is mainly based on the temperature and pressure of the electro-aluminum stamping, and the screen-printed electro-aluminum is dependent on the role of the adhesive. The reason why adhesives can transfer anodized aluminum is because the outermost layer of anodized aluminum consists of a glue layer.
In the electro-aluminum transfer printing operation, the printed text must first be made into a screen plate, and the graphic requirements on the plate are clear. Then use a silk screen plate to print a layer of adhesive on the substrate, and then put the aluminum foil on it, and then use cotton or sponge to lightly press in the graphic area, wait until dry, tear off the anodized aluminum (strongly sticky Dry, torn off faster, there is a clear and bright picture of anodized aluminum.
Adhesive formulation is the key to transfer. The formulation shall be formulated as appropriate according to the nature of the printed material, the nature of the anodized aluminum layer, and the suitability of the screen plate. The formulation's viscosity and concentration should be properly formulated. For example, in the case of transfer cloths and polyvinyl chloride, polystyrene plastic products and wood products, the adhesive formulation is:
Perchloroethylene resin 100g
Xylene 50ml
Cyclohexanone 350ml
Perchloroethylene resins can also be used instead of or in combination with polyvinyl chloride resins. PVC resin with low molecular weight. When transclamming plastic products, xylene can be replaced with acetone in the above adhesive formulation. When transferring plexiglass products, some chloroform may be added. When transferring metals, ceramics, and glass products, the adhesive formulation is: 100% epoxy resin. (Ortho) Dibutyl benzoate 3-5%, Ethylenediamine 12-15% (concentration too high can add thinner).
There are many methods of processing on stainless steel surfaces, which can be roughly divided into two types. One is to treat stainless steel with surface gloss, and to use art processing to form a pattern using luster contrast; the other is to assign color to the composition of patterns. Art processing. Typical examples of the use of the screen printing method include etching and spray painting.
Etching processing method is to screen the acid-proof protective film on the stainless steel surface by screen printing, and then etch it with ferrous chloride solution to form an artistic pattern. The spray color method sprays pigment particles after screen printing to form a pear-like surface and form an artistic pattern.
In recent years, in order to adapt to the diversification of the use of stainless steel and higher and higher artistic requirements, the “color art†processing method with color has been developed and has become the mainstream in this field. Among the methods for imparting the color of stainless steel include a method of performing firing after screen ink printing and a chemical coloring method.
The process of chemical coloring of stainless steel products is: stainless steel products → screen printing → oxidation coloring → alkali treatment → finished products.
The etching art process of stainless steel products is: stainless steel products → silk screen → etching → alkali treatment → oxidation coloring → finished products.
The process of spray painting of stainless steel products is: stainless steel products → silk screen → etching → alkali treatment → screen printing → oxidation coloring → alkali treatment → finished products.
The stainless steel chemical coloring method does not use pigments and dyes, but soaks the stainless steel in a warm concentrated chromium sulfate solution to perform chemical coloring, which is characterized by good resistance to food. The ink used in this processing method must have a very strong acid resistance, and UV curing inks having special properties suitable for the processing process are generally used.
Fifth, the silk screen of the light reflector
The light reflector is a kind of silk screen that is irradiated by the headlights or other lights of a car and the light is reflected by the irradiated object in the direction of the light source without being affected by the angle of irradiation or the weather. Reflective is a hollow glass particle with a diameter of about 40 μm, with a reflective layer at the other heart. Its flexible sheet-like support has an adhesive layer and a release layer on its surface. A reflection layer is generally provided on an acrylic resin plate, and a reflection layer is formed by adding a certain amount of hollow glass particles with a transparent resin and printing by a screen printing method. When printing, we must carefully select the mesh number, hole width (opening degree), and the type of hollow glass particles. The hollow glass particles are regularly arranged.
This type of printing is used for various signs, commercials, etc. so that it can be confirmed in dark places. In addition, printing for road signs, air navigation signs, lifesaving appliances, security helmets, etc. can also be considered.
Six, with silk screen printing transfer aluminum
Gorgeous and beautiful, bright aluminum color hot stamping through the hot stamping machine, on the substrate, its beautiful color has won wide appreciation. However, sometimes the bronzing machine will also encounter products that are not suitable for mechanical bronzing. However, the customers are stubbornly not using screen printing gold. In the dilemma, the unique screen printing plate transfer galvanized aluminum shows its superiority. Hot stamping machine is mainly based on the temperature and pressure of the electro-aluminum stamping, and the screen-printed electro-aluminum is dependent on the role of the adhesive. The reason why adhesives can transfer anodized aluminum is because the outermost layer of anodized aluminum consists of a glue layer.
In the electro-aluminum transfer printing operation, the printed text must first be made into a screen plate, and the graphic requirements on the plate are clear. Then use a silk screen plate to print a layer of adhesive on the substrate, and then put the aluminum foil on it, and then use cotton or sponge to lightly press in the graphic area, wait until dry, tear off the anodized aluminum (strongly sticky Dry, torn off faster, there is a clear and bright picture of anodized aluminum.
Adhesive formulation is the key to transfer. The formulation shall be formulated as appropriate according to the nature of the printed material, the nature of the anodized aluminum layer, and the suitability of the screen plate. The formulation's viscosity and concentration should be properly formulated. For example, in the case of transfer cloths and polyvinyl chloride, polystyrene plastic products and wood products, the adhesive formulation is:
Perchloroethylene resin 100g
Xylene 50ml
Cyclohexanone 350ml
Perchloroethylene resins can also be used instead of or in combination with polyvinyl chloride resins. PVC resin with low molecular weight. When transclamming plastic products, xylene can be replaced with acetone in the above adhesive formulation. When transferring plexiglass products, some chloroform may be added. When transferring metals, ceramics, and glass products, the adhesive formulation is: 100% epoxy resin. (Ortho) Dibutyl benzoate 3-5%, Ethylenediamine 12-15% (concentration too high can add thinner).
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