The main manufacturing processes for signage include screen printing, etching, heat transfer printing, electroplating, engraving, baking paint, and UV printing. Different processes are suitable for different materials and usage scenarios, and can present diverse visual and textural effects.
1. Screen Printing: Ink is transferred to the surface of a metal or plastic substrate through screen printing. It is commonly used for materials such as aluminum plates and stainless steel. Its advantages include high color saturation, strong coverage, suitability for complex patterns and multi-color printing, durability, and widespread use in outdoor signage.
2. Etching: Text or patterns are etched onto a metal surface using chemical or electrochemical methods. It is divided into anodic etching and chemical etching. The finished product has a retro feel and fine lines, and is often used in high-end venues, university signs, or commemorative signs.
3. Heat Transfer Printing: The design pattern is first inkjet printed onto transfer paper, and then the pattern is transferred to a metal plate through heat and pressure.
4. Electroplating Process: Bright colors and low cost, but poor weather resistance, suitable only for indoor environments such as office signs and floor directory signs.
5. Engraving Process: A layer of precious metals (such as gold, nickel, or titanium) is electrolytically plated onto the base metal surface, enhancing its appearance and corrosion resistance. Commonly used for high-end gold plating and corporate logo signs, it features a bright luster, wear resistance, and colorfastness.
6. Engraving Process: Using CNC engraving equipment, deep engraving is performed on wood, stone, acrylic, or metal, resulting in a strong three-dimensional effect and high precision. Suitable for signage requiring a sense of depth, such as scenic area monuments and corporate nameplates.