What is floating fiber?It is generally believed that the surface appears radial white traces, white traces with the increase of the fiber is more obvious known as floating fiber.Floating fiber not only affects the appearance of the finished product, but also leads to the degradation of the performance of the finished product.
Floating fiber is caused by exposure to glass fiber. In the process of filling and flowing of plastic melt, the resin has no intact wrapping fiber, resulting in fiber exposure on the surface. After condensation and forming, radioactive white traces are formed on the surface of plastic parts.
The reasons for the emergence are:
1. Due to the difference in fluidity and density between glass fiber and resin, there is a tendency to separate.The low-density fiberglass floats on the surface, while the high-density resin sinks to form a floating fiberglass.
2. Due to the friction and shearing force of the screw, nozzle, runner and gate of the plastic melt in the flow process, the local viscosity is poor, which causes the damage of the interface layer of the glass fiber surface.The smaller the viscosity, the more serious the destruction of the interface layer, the smaller the binding force of glass fiber and resin.
3. When the glass fiber flows from the inside to the outside and touches the surface of the touch tool, the light and fast glass fiber you connect will freeze immediately due to the temperature difference between inside and outside.If the glass fiber is not fully wrapped in time, the floating fiber will appear.
Floating fiber is a phenomenon that needs to be combined with the actual material and production conditions and other factors. If you want to know more solutions, contact us.
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