Common Causes of Scattered Dots in Glue Dispensing Machines and Second Intelligent’s Solutions

As a leading enterprise in the fluid application field in China, Shenzhen Second Intelligent Equipment Co., Ltd. (referred to as "S econd Intelligent") has been dedicated to dispensing technology for nearly 20 years. Its products are widely used in 3C electronics, new energy, biomedicine, and other industries. During the dispensing process, "scattered dots" and "splashing" are core defects that affect product yield. This article analyzes the causes of scattered dots and proposes systematic solutions based on Second Intelligent’s technical expertise and industry experience. 1 . Common Causes and Mechanisms of Scattered Dots l Temperature Fluctuations Causing Viscosity Changes Adhesives are temperature-sensitive, and ambient temperature fluctuations significantly alter their viscosity. For example, epoxy resin becomes less viscous and more fluid when temperatures rise. Failure to adjust dispensing parameters in real-time may lead to trajectory deviation...