Metal sign production process classification

What are the classification of metal sign production process? I believe that many people are not very clear, do not understand these process knowledge, in fact, there are 6 common metal sign production processes are: Metal screen printing signs, electroplating and electroforming signs, sandblasting metal signs, thermal transfer metal signs, corrosion metal signs, metal flat sun signs, then these 6 common metal signs production process is what, then explain to you in detail:

1) Metal screen printing sign

Metal screen printing signs refers to the use of resin ink, screen printing on the board after the preliminary treatment, and then the process of preserving light, laminating film can be made of a variety of exquisite color screen printing metal signs.

Metal screen printing signage production technology is an aspect of the application of screen printing technology. Now a variety of silk screen signs have been widely used in the electronic industry and household appliance products, especially after the surface of a variety of signs with a new decorative process, it is delicate and elegant form, many colorful decorative effects show in front of people, improve the value of goods and competitiveness. In the production process of metal signs, the decisive role is the process technology and printing points of screen plate and substrate pretreatment and the choice of screen printing ink.

2) Electroplating and electroforming signs

Electroplating and electroforming sign production technology is:

Using the method of screen printing or photosensitive plate making, the plate is covered with film, and then the method of electroplating is used, so that the text and line are pre-plated, cast copper, nickel plating, and gold plating to form a raised gold pile brand. It can complete different patterns and various fonts according to the user's requirements, the product is durable and non-corrosive, not afraid of rain and sun, wear-resistant, and does not fade. Beautiful and generous bright color, clear pattern, good brightness is a variety of electronic products, automobiles, household appliances and other essential car body label.

3) Sandblasted metal sign

The production technology of sandblasted metal signs is:

With the method of computer lettering, the instant paste will be engraved on the metal plate, the text graphics will be sandblasted to form a sand surface effect, and then oxidized, so that the metal plate shows the effect of placer gold metal label.

4) Heat transfer metal plate

Heat transfer metal label technology is:

The metal plate is a special panel generated by the surface treatment process, and then the color picture you design is hit on the transfer paper by the way of inkjet printing, and the metal plate is reversed by heating.

Production process of heat transfer metal signs:

Processing of base paper - printing protective layer - printing pattern layer - printing luminous layer - printing covering layer - printing adhesive layer - drying - packaging.

5) Corrosion of metal labels

Corroded metal signs are also called etched signs. Mainly check the use of mask, etching after processing three steps made of convex or concave metal signs. Corrosion metal plate manufacturing process:

First, cutting: according to the size of the drawing requirements (layout size), the rough edge of not less than 5mm is added around. Cutting plate with 720 pedal type shearing machine, the surface is required to be flat, no margin around.

Second, metal corrosion signs surface treatment:

(1) Mechanical polishing: with 2.2-4 kW polishing machine, mechanical polishing of wool, cloth wheel using 300-350 motor speed generally 2000-3000 RPM.

(2) Alkali treatment: Boil the metal plate with 10-15% sodium hydroxide in an aqueous solution at 65-85 ° C for 10-30 seconds, then wash it with clean water, and immerse it in 5% dimethylic acid aqueous solution.

(3) Powder treatment method: Use a flat brush to dip old powder (double powder) to scrub the plate evenly with a cross crossing method until the dirt surface is removed or the effect of oxygen skin is removed, and then seal it with 5% potassium dichromate solution.

(4) Wire drawing treatment: by mechanical or manual wire drawing, the metal surface is brushed to achieve the effect of metal surface regeneration.

6) Metal flat sun sign

Metal flat printing signs are mainly used in the way of photosensitive printing, the different colors are dissolved into the film, so that it is displayed on the metal plate through the development method, so as to achieve the purpose of a metal sign with explanatory significance. The following is the specific process flow and formula of several metal flat printing signs that we often come into contact with (the process flow of flat printing signs) :

(1) Feeding: the size of the wool is generally greater than the plate size (5mm or more), and the plate surface is smooth and smooth, without pits.

(2) Pre-treatment: polishing - drawing - treatment - oxidation and other methods.

(3) Water closure: the treated board, after removing oil and removing film, is quickly immersed in water and cannot contact with air.

(4) Gluing: the configuration of glue solution. Glue: 200-230g water: 1000ml, boiling water for 2 hours to fully dissolve the glue, so that the temperature drops to 30-50℃ when the photosensitizer (heavy ammonium caseinate) 25-30g, the glue evenly coated on the metal plate, dry for use.

(5) Printing: The SB750 vacuum printing machine can be used for photosensitive printing, the lamp 60-90cm time 40-80 seconds after taking, put in warm water for 1 minute development into the color solution for dyeing.

(6) Gloss: After fully dyed brand, cool dry, with a brush or spray gun coated with gloss paint (generally with eye brand baking paint or bake free gloss paint).

Metal flat sun signs are generally used for indoor goods, small appliances and equipment not affected by bad weather. The advantages are simple plate making process, fast speed, timely delivery, low defective rate and cost. The disadvantage is that the sun and rain, easy to fade, can not do outdoor signs.

Metal sign production process classification and everyone detailed here, metal signs in all fields of modern society more and more, widely used with electronic products, home appliances, machinery and civilian products and other fields. Metal signs are mainly based on copper, iron, aluminum, zinc alloy, lead-tin alloy and other raw materials, through stamping, die casting, etching, printing, enamel, imitation enamel, paint and other processes.