What issues might arise when using Xuyang aluminum-silver paste and silver bars in the no-paint application process? Aluminum-silver paste and silver bars are just one of Xuyang's many product categories. As customers become more familiar with Xuyang's strong capabilities, an increasing number of them are choosing our aluminum-silver paste and silver bars. It’s worth noting that, in addition to their traditional use in color masterbatch plastics, these silver bars can also be applied in the no-paint industry. However, many people may still be unfamiliar with the no-paint sector and worry that using them could lead to potential problems. So, let’s dive in together and explore "What issues might arise when Xuyang aluminum-silver paste and silver bars are used in no-paint applications?"
What problems can arise when using Xuyang aluminum silver paste silver strips in paint-free applications? Before answering this question, let me first explain what silver bars are. Typically, silver bars are collectively referred to as bar-shaped aluminum pigments. They’re made by removing excess solvent from aluminum-silver paste and then adding a variety of additives, followed by extrusion into cylindrical shapes—each about 2mm in diameter and roughly 8 to 10mm in length. Generally speaking, silver bars can be categorized into two main types depending on their application: plastic-grade silver bars for use in plastics, and ink-grade silver bars for incorporation into inks. Among these, the plastic-grade silver bars are specifically tailored for applications in the no-spray industry.
What problems can arise when silver bars are used in the paint-free, spray-free industry? In fact, the primary issue is the occurrence of flow marks. Essentially, flow marks refer to wavy surface defects that appear near the gate area of plastic parts. These defects typically result from uneven temperature distribution within the part or from the plastic solidifying too quickly, causing turbulent flow around the gate, the presence of cold material near the gate, or insufficient replenishment of plastic during the holding phase. Common causes of flow marks include: lower melt and mold temperatures, slower injection speeds, reduced injection pressure, or excessively small runners and gates that create excessive flow resistance. In the context of the paint-free industry, flow marks may also form when the leading edge of the molten plastic cools rapidly against the cavity wall, while the subsequent melt continues to churn and cool—creating a cascading effect. So, how can we address this issue? Stay tuned—our editor will share some practical solutions with you next time!
That’s all for the editor’s introduction to "Potential Issues Arising from the Use of Xuyang Aluminum Silver Paste and Silver Strips in Paint-Free Applications." We hope this information was helpful to you. Thank you for taking the time to read—if you enjoyed our content, feel free to stay tuned for more updates!
