Metal nameplate etchingThere are many factors affecting side etching in the process, and the following points are outlined: immersion and blister etching will cause large side etching, splash and spray etching side etching is smaller, especially the best effect of spray etching.

Reduce side corrosion and protrude along the edge to improve the etching factor. Usually, the longer the time in the etching solution, the more severe the side corrosion will be. The more severe the product corrosion will be. Product side corrosion seriously affects etching accuracy, and severe side corrosion will make the production of fine lines impossible. When side corrosion and protruding edges are reduced, the etching coefficient increases, and a high etching coefficient indicates the ability to maintain a fine line so that the etched line is close to the original figure size. Electroplated etch resist, whether tin-lead alloy, tin, nickel alloy or nickel, excessive protrusion can lead to shorting of the wire. As the protruding edge tends to break, a bridge is formed between the two points of the wire.

Types of pvc screen printing etchant：DifferentMetal nameplate etchingThe chemical composition of the fluid varies, as does the etch rate and the etch factor. For example, acid copper chloride etchants typically have an etch factor of 3 and alkaline copper chloride etchants can have an etch factor of 4. Recent studies have shown that nitrate-based etch systems have little to no side corrosion and the sidewalls of the etch line are near vertical and need to be developed.

pvc screen printing etching rate: slow etching rate can lead to serious side corrosion. The improvement of etching quality is closely related to the acceleration of the etching rate. The faster the etching rate, the shorter the time the board stays in the etching solution, the smaller the sign side corrosion, and the clear and neat etched graphics.

Metal nameplate etchingliquidPH value: alkaline etching solution PH when the value is higher, side etching will increase. In order to reduce side corrosion, it is usually to reduce side corrosion. pH value should be controlled below 8.5. Etchant density: alkaline etchant density is too low will aggravate side corrosion. Selecting etchant with high copper concentration is beneficial to reduce side corrosion. The effect of alkaline etchant ph value on side corrosion of metal nameplate.

Copper foil thickness for metal nameplates: In order to achieve minimal side corrosion for fine wire etching, it is best to use (ultra) thin copper foil. The thinner the wire width, the thinner the copper foil thickness. Since the thinner the copper foil is in the etching solution, the smaller the side corrosion will be.