What is the cause of the phenomenon of aluminum pigment marks?

With the development of the economy, people's awareness of aluminum pigments has become deeper and deeper, and many people have begun to pay attention to the spray-free injection molding industry. We all know that mobile phones and cars generally need to be painted, but in order to improve the process, some companies have begun to use spray-free technology, which indirectly leads to the phenomenon of leaving marks due to technical problems in the spraying process. So, what is the cause of the phenomenon of aluminum pigment marks?

General spray-free material is a material that can be directly injected and can achieve colorful appearance without spraying. This material is generally made of Aluminum Granules for plastic as raw materials. Before we understand the reasons for the scarring phenomenon, we need to understand what Aluminum Granules for plastic are.

Usually plastic silver bars are also called Aluminum Granules in the industry, which is what we often call silver bars. The excess solvent is removed by aluminum paste, and then rich additives are added, and then extruded into pieces with a diameter of 2 mm and a length of 2 mm. The Aluminum Granules are about 8-10mm in size. Generally, Aluminum Granules can be used in plastic systems, mainly used in household appliances, automotive interiors, mobile phone casings, films, profiles, and color masterbatches. They are basically used in PE, PP, PC, PC/ABS, ABS, PS, PA, etc. Material.

The relationship between the existence of flow marks in injection molded parts and aluminum pigments is mainly due to two aspects, one is the selection of aluminum paste, and the second reason is the dispersion of aluminum paste. The Aluminum Granules produced by Sunflower Chemical is to change the basic properties of the aluminum paste through additives, so that it can be better dispersed in the substrate, and can be uniformly dispersed into the plastic during use, without aggregation and dispersion .