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Mold surface treatment
Apr 27, 2018

Mold surface treatment


Sandblasting, skin pattern and fire pattern are all aspects of mold surface treatment. These three kinds of surface treatment technology, including sandblasting and striae we use more, there are also some fire patterns, but not too much. For the sand blasting of plastic molds, the three processes of the skin pattern and the fire pattern, a general explanation is given.


Sandblasting is to shoot quartz sand through a gas gun with a certain pressure to the surface of the mold, thus forming a frosted surface on the surface of the plastic mold. When the plastic mold is injection molded, a matte effect is formed on the surface of the product. General sandblasting is divided into fine sand and coarse sand. For sandblasting, the surface of the plastic parts is easily worn off.


Dermatoglyphs are made by a chemical spray method. Dermatoglyphics are the most versatile and can imitate various effects. The price difference for the graining process is very large, and the technical level of the graining process is high. For different skin patterns, the price is relatively low. But for the three-dimensional striae used for automotive interior parts molds and home appliances molds, the price is much more expensive.


Fire pattern refers to the pattern left by EDM plastic mold after processing. For the fire pattern is often the die after the discharge processing, the product can be retained on the surface of the fire pattern effect can be accepted to stay in the fire pattern processing. In general, electrode processing fire patterns are not specially designed, and the cost is higher.


For the plastic mold surface treatment technology, we use the most is the skin pattern. Of course, what kind of surface treatment needs to be used for the actual product, or whether it depends on the use of the plastic parts.


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